| DOLBY LABORATORIES LICENSING CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 20120128177 | Circular Frequency Translation with Noise Blending - An audio signal is conveyed more efficiently by transmitting or recording a baseband of the signal with an estimated spectral envelope and a noise-blending parameter derived from a measure of the signal's noise-like quality. The signal is reconstructed by translating spectral components of the baseband signal to frequencies outside the baseband, adjusting phase of the regenerated components to maintain phase coherency, adjusting spectral shape according to the estimated spectral envelope, and adding noise according to the noise-blending parameter. Preferably, the transmitted or recorded signal also includes an estimated temporal envelope that is used to adjust the temporal shape of the reconstructed signal. | 05-24-2012 |
| 20120128159 | Decorrelator for Upmixing Systems - An improved decorrelator is disclosed that processes an input audio signal in two separate paths. In one path, a banded phase-flip filter is applied to lower frequencies of the input audio signal. In a second path, a frequency-dependent delay is applied to higher frequencies of the input audio signal. Signals from the two paths are combined to obtain an output signal that is psychoacoustically decorrelated with the input audio signal. The decorrelated signal can be mixed with the input audio signal without generating audible artifacts. | 05-24-2012 |
| 20120127324 | Method and System for Display Characterization or Calibration Using A Camera Device - In a class of embodiments, a method and system for characterizing a display device using a camera device (e.g., a consumer grade, mobile camera device) to sense light emitted by the display device during display of one or more test images, and to generate measurement data characterizing the display and/or calibration data useful for calibrating the display device. In some embodiments, the display device is adjusted or calibrated manually in response to such calibration data, for example by user actuation of display device controls in response to calibration data indicative of display setting recommendations. In some embodiments, the test image(s) are embedded in a video stream (e.g., overlaid on arbitrary video content). For example, test images including appropriate timing information and calibration sequences are embedded in a video stream for display by the display device. In some embodiments, the user is prompted to align the camera device (e.g., to position the camera device such that light emitted from a test image at least substantially fills the camera field of view). | 05-24-2012 |
| 20120127194 | Digital Display Devices And Digital Projectors With Expanded Color Gamut - The color gamut of display devices like digital projectors and digital displays is expanded by incorporating additional passband filters into the optical path of the devices to produce presentations of color components in two different color gamuts. The composite visual effect of the two presentations is a presentation in an expanded color gamut. Special considerations in the modulation of color components of the image can reduce variations in color and brightness, which can otherwise manifest themselves as flicker. | 05-24-2012 |
| 20120120131 | EDGE LIT LED BASED LOCALLY DIMMED DISPLAY - A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. The screen is illuminated with light from a light source comprising an array of controllable light-emitters. The controllable-emitters and elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range. | 05-17-2012 |
| 20120120096 | Image Control for Displays - Displays such as televisions, computer monitors, and the like may boost ( | 05-17-2012 |
| 20120113498 | Control Of Array Of Two-Dimensional Imaging Elements In Light Modulating Displays - Light emitting elements in an illumination unit of a display may be blanked during updates of pixels of a spatial light modulator (SLM). Updates of pixels in different segments of the SLM may be coordinated with blanking of corresponding segments of the illumination unit. Updating of segments of a light source ( | 05-10-2012 |
| 20120113167 | Reduced Power Displays - A backlight for a display comprises a plurality of independently controllable groups of light emitters. The brightness levels of the groups of light emitters are controllable by pulse width modulation (PWM) signals generated by PWM driving circuits. The phases of PWM signals to different groups of light emitters are configured to be offset by different amounts, so as to stagger the start times of light emitters of different groups. Such phase-shifting of PWM signals may result in total power consumption that ramps up more gradually, is distributed more evenly over time, and is held to a lower maximum value than if the same PWM signals were not phase-shifted. The duration of a first PWM cycle of PWM signals for an image may also be made longer than subsequent PWM cycles for the image so as to extend the initial power ramp-up time. | 05-10-2012 |
| 20120113162 | WIDE COLOR GAMUT DISPLAYS - A display has a modulator illuminated by a illuminator comprising an array of light sources. The array includes light sources of a plurality of colors. The light sources of different colors are individually controllable. Within each color, the light sources that illuminate different areas on the modulator are individually controllable. The display may provide a high dynamic range and a wide color gamut. | 05-10-2012 |
| 20120106747 | System and Method for Automatic Selection of Audio Configuration Settings - In one embodiment the present invention includes a circuit for automatically adjusting an output of an audio device. The circuit includes a memory circuit, a detector circuit, a control circuit, and an output circuit. The memory circuit stores configuration information. The detector circuit detects environment information related to an environment in which the apparatus is present. The control circuit selects selected configuration information from the memory circuit according to the environment information detected by the detector circuit. The output circuit receives an input audio signal and the selected configuration information, modifies the input audio signal according to the selected configuration information, and generates an output audio signal corresponding to the input audio signal as modified according to the selected configuration information. | 05-03-2012 |
| 20120106743 | Loudness Modification of Multichannel Audio Signals - Scaling, by a desired amount s | 05-03-2012 |
| 20120099760 | ASSOCIATING INFORMATION WITH A PORTION OF MEDIA CONTENT - A media fingerprint is derived from a portion of media content. Information is associated with the media content portion based on the derived media fingerprint. Upon linking to the associated information, the associated content is presented with the media content portion. The media fingerprint includes a unique representation of the media content portion that is derived from a characteristic component of the media content portion. The media content may comprise an original instance of content or a derivative instance of the original content. | 04-26-2012 |
| 20120098943 | Modifying Images for a 3-Dimensional Display Mode - Modifying images for a 3-dimensional display mode includes receiving a third image encoded for a 3-dimensional display mode, receiving a first image not encoded for the 3-dimensional display mode, modifying the first image to generate a second image encoded for the 3-dimensional display mode, and displaying the third image and the second image in the 3-dimensional display mode. | 04-26-2012 |
| 20120096353 | USER-SPECIFIC FEATURES FOR AN UPGRADEABLE MEDIA KERNEL AND ENGINE - An audio/video (A/V) system includes an audio/video (A/V) component configured to generate audio or video data. The A/V system includes one or more processing devices, and one or more storage devices storing instructions that, when executed by the one or more processing devices, cause the one or more processing devices to implement one or more audio or video processing applications for the A/V system. Each of the applications can include a processing module and data for a graphical user interface (GUI) for presentation on the A/V system. The applications can be configured to adjust a performance or a setting of the A/V equipment. The A/V system includes an audio or video processing engine configured to interact with the processing modules for the applications, where the audio or video processing engine is configured to share processing resources among two or more of the processing modules. | 04-19-2012 |
| 20120092555 | HIERARCHY AND PROCESSING ORDER CONTROL OF DOWNLOADABLE AND UPGRADEABLE MEDIA PROCESSING APPLICATIONS - A method for an audio/video (A/V) system includes accessing processing modules for downloadable applications. Each downloadable application can have at least one processing module and data for a graphical user interface (GUI), and each processing module can be configured to interact with an upgradable engine to adjust a performance or a setting of an audio and video (A/V) equipment. The method includes arranging an order of two or more of the processing modules in a processing chain to share processing resources, to reduce a processing requirement of the A/V equipment, or to enhance a level of performance of the A/V equipment. | 04-19-2012 |
| 20120092452 | Encoding and Decoding Architectures for Format Compatible 3D Video Delivery - Encoding and decoding architectures for 3D video delivery are described, such as 2D compatible 3D video delivery and frame compatible 3D video delivery. The architectures include pre-processing stages to pre-process the output of a base layer video encoder and/or decoder and input the pre-processed output into an enhancement layer video encoder and/or decoder of one or more enhancement layers. Multiplexing methods of how to combine the base and enhancement layer videos are also described. | 04-19-2012 |
| 20120092449 | Support Of Full Resolution Graphics, Menus, And Subtitles In Frame Compatible 3D Delivery - Full resolution graphic overlays (e.g., graphics, menus, arrows, buttons, captions, banners, picture in picture information) and subtitles in frame compatible | 04-19-2012 |
| 20120092395 | Edge-Lit Local Dimming Displays, Display Components and Related Methods - An edge-lit display having a front modulator in the top layer of an optical package and an extractor in at least one of the top and bottom layers. A control system is connected to control the extraction mechanism to project light which approximates a desired image onto the front modulator, estimate a pattern of light incident on the front modulator, and control the front modulator based on the estimated pattern. | 04-19-2012 |
| 20120092360 | Dual Modulation Using Concurrent Portions of Luminance Patterns in Temporal Fields - Embodiments of the invention facilitate high-dynamic-range (HDR) imaging by generating portions of spatial and/or temporal luminance patterns with different spectral power distributions substantially concurrent with, for example, the modulation of the light intensity associated with the portions of luminance patterns. The method can include predicting luminance patterns associated with multiple spectral power distributions. The method also can include distributing portions of the luminance patterns in one or more temporal fields. In some embodiments, distributing the portions of the luminance patterns can include interlacing those portions. Further, the method can include modulating light intensities of the luminance patterns to produce an age with other spectral power distributions. In some embodiments, the distribution of the luminance pattern portions can be substantially synchronous with modulating the light intensity of the luminance patterns. | 04-19-2012 |
| 20120089655 | System and Method of Dynamic Precision Operations - In an embodiment, a method performs computer operations using a first fractional precision and a second fractional precision. A computer program has a source variable, a destination variable, and an operation. The source variable has a first dynamic fractional precision, the destination variable has a second dynamic fractional precision that differs from the first dynamic fractional precision, and the operation is related to the source variable and the destination variable. The source variable is aligned to a format of the destination variable, according to the first dynamic fractional precision and the second dynamic fractional precision. The operation is performed using the destination variable and the source variable. A value is assigned to the destination variable according to the operation. In this manner, a single codebase may be written that operates on various hardware that each have different bit precision capabilities, without requiring additional development and verification effort. | 04-12-2012 |
| 20120087409 | METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 04-12-2012 |
| 20120087408 | METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 04-12-2012 |
| 20120081387 | Image Display Based on Multiple Brightness Indicators - Methods for controlling light sources in displays in response to image data determine both a central tendency for brightness and an upper extreme for brightness of an area of an image. Brightness of a light source is controlled based upon both the central tendency and the upper extreme. Controllers in displays such as televisions, computer monitors, digital cinema and the like may control light source in a manner that reduces or avoids perceptible haloing. | 04-05-2012 |
| 20120078894 | Trend Analysis in Content Identification Based on Fingerprinting - Fingerprint-based content identification is described. Bin-counting detects linear trends based on data points that are generated from a set of query fingerprints, which are extracted from a query content item and a matching set of corresponding reference content items that are extracted from a reference content item. RANSAC may detect trends based on confidence scores that are computed for multiple candidate content items. The trends detected for the candidate content items are compared against a threshold in order of decreasing confidence score until a trend that satisfies the threshold is found. A ranking-based mechanism for fingerprint-based content identification may use a bin-counting or RANSAC-based trend detection mechanism to identify duplicate or multiple reference content items that all match the same query content item. | 03-29-2012 |
| 20120078402 | UPGRADEABLE ENGINE FRAMEWORK FOR AUDIO AND VIDEO - An audio/video (A/V) system includes an audio/video (A/V) component configured to generate audio or video data. The A/V system includes one or more processing devices configured to implement an audio or video processing engine to process the audio or video data to generate one or more different domain representations of the audio or video data. The A/V system includes one or more audio or video processing applications that are each configured to access one or more of the different domain representations of the audio or video data, and to perform audio or video processing on the one or more accessed domain representations of the audio or video data. Each of the one or more processing applications access and process the domain representations independently of each other. | 03-29-2012 |
| 20120075435 | Method and System for 3D Display Calibration with Feedback Determined by A Camera Device - Several embodiments of 3D display system and systems and methods for their calibration are disclosed herein. In one embodiment, a method and system for calibrating a 3D display using feedback indicative of measurements of light, emitted from the 3D display (typically during display of a test pattern), by a camera device. In one embodiment, the camera device is a handheld camera device including an inexpensive, uncalibrated camera. In another class of embodiments, a system including a 3D display (to be recalibrated), a video preprocessor coupled to the display, and a feedback subsystem including a camera device operable to measure light emitted by the display are also disclosed. | 03-29-2012 |
| 20120075360 | Systems And Methods For Controlling Drive Signals In Spatial Light Modulator Displays - Methods and systems are provided for processing control values for a backlight and/or a display modulation layer of a display. A ramping pattern is determined based on the difference between new and old control values. A blanking pattern is determined based on the motion detected in frame regions. The ramping pattern or blanking pattern may take into consideration the display modulation layer response characteristics. The ramping pattern and/or blanking pattern is applied to control values for the backlight and/or display modulation layer. | 03-29-2012 |
| 20120074851 | Method and System for Display Calibration with Feedback Determined by a Camera Device - In a class of embodiments, a method and system for calibrating a display using feedback indicative of measurements of light, emitted from the display (typically during display of a test pattern), by a camera device whose camera has a sensitivity function that is unknown a priori but which is operable to measure light emitted by a display in a manner emulating at least one measurement by a reference camera having a known sensitivity function. Typically, the camera device is a handheld camera device including an inexpensive, uncalibrated camera. In another class of embodiments, a system including a display (to be recalibrated), a video preprocessor coupled to the display, and a feedback subsystem including a camera device operable to measure light emitted by the display. The feedback subsystem is coupled and configured to generate preprocessor control parameters in response to measurement data (indicative of measurements by the camera device) and to assert the preprocessor control parameters as calibration feedback to the preprocessor. The preprocessor is operable to calibrate (e.g., recalibrate) the display in response to the control parameters by filtering input image data (e.g., input video data) to be displayed, for example to automatically and dynamically correct for variations in calibration of the display. | 03-29-2012 |
| 20120063121 | Multi-Die LED Package and Backlight Unit Using the Same - A multi-die LED package comprises a diode that works as a light-emitting diode for emitting light and as a sensing diode for detecting at least one physical quantity. The multi-die LED package is able to provide desired luminance and color independent of aging, temperature or other effects. | 03-15-2012 |
| 20120062607 | Method And Apparatus for Edge Lit Displays - Edge lit displays are lit via a set (or individual) lighting elements. Each element projects light onto, for example, a zone which is then utilized directed as a backlight toward an LCD panel. An amount of light incident on any area (e.g., pixel) of the LCD panel (or SLM/series of SLMs) is calculated based on a sum of contributions from each zone. A similar process may be utilized for other lighting configurations. An amount of modulation performed by the LCD panel is then calculated based at least in part on lighting from the zones which may include brightness and varying levels of color content. | 03-15-2012 |
| 20120046772 | Low Complexity Auditory Event Boundary Detection - An auditory event boundary detector employs down-sampling of the input digital audio signal without an anti-aliasing filter, resulting in a narrower bandwidth intermediate signal with aliasing. Spectral changes of that intermediate signal, indicating event boundaries, may be detected using an adaptive filter to track a linear predictive model of the samples of the intermediate signal. Changes in the magnitude or power of the filter error correspond to changes in the spectrum of the input audio signal. The adaptive filter converges at a rate consistent with the duration of auditory events, so filter error magnitude or power changes indicate event boundaries. The detector is much less complex than methods employing time-to-frequency transforms for the full bandwidth of the audio signal. | 02-23-2012 |
| 20120044995 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 02-23-2012 |
| 20120044281 | High Dynamic Range Display with Three Dimensional and Field Sequential Color Synthesis Control - Embodiments relate generally to computer-based image processing, and more particularly, to systems, apparatuses, integrated circuits, computer-readable media, and methods to facilitate operation of an image display system with a relatively high dynamic range by, for example, generating a rear modulator sub-image with color compensation techniques. The image display system can produce rear modulator drive levels that would enable a front modulator sub-image to be displayed without color errors arising for a certain color or colors when the image display system includes pixel mosaics. | 02-23-2012 |
| 20120039490 | Controlling the Loudness of an Audio Signal in Response to Spectral Localization - The invention relates to modifying the loudness of an audio signal by measuring the weighted broadband level of the audio signal and modifying that weighted broadband level as a function of a spectral localization estimate of the audio signal. | 02-16-2012 |
| 20120038782 | VDR METADATA TIMESTAMP TO ENHANCE DATA COHERENCY AND POTENTIAL OF METADATA - A system and method for enhancing data coherency and potential of at least one metadata associated with a video data configured to operate in a visual dynamic range (VDR) format is disclosed. The system comprises a metadata framing structure which includes a header start of frame bit set, a packet type bit set, a configuration bit set, a variable depth configuration/metadata bit set, a header end of frame bit set, a timestamp bit set for specifying a frame delay count to apply the at least one metadata to the video data and a checksum check bit set. The at least one metadata is designed to embed within a code word guard bit position of at least one color channel of the video data and adaptable to embed within the VDR pipeline to enhance the quality of the video data. | 02-16-2012 |
| 20120038693 | High Dynamic Range Projection System - Embodiments relate generally to computer-based image processing, and more particularly, to systems, computer-readable media, methods, integrated circuits, and apparatuses to facilitate operation of a projection system with relatively high dynamic range output by, among other things, providing subsets of light patterns along an optical path during respective first and second temporal fields associated with respective first and second illuminants. The projection system can synthesize color for projectable images by combining or otherwise using the subsets of light patterns with an array of color elements to produce projectable images with color in at least the visible spectrum. | 02-16-2012 |
| 20120033735 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 02-09-2012 |
| 20120033734 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 02-09-2012 |
| 20120033733 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 02-09-2012 |
| 20120033732 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 02-09-2012 |
| 20120033729 | Method and System for Improving Compressed Image Chroma Information - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 02-09-2012 |
| 20120033040 | Filter Selection for Video Pre-Processing in Video Applications - Filter selection methods and filter selectors for video pre-processing in video applications are described. A region of an input image is pre-processed by multiple pre-processing filters and the selection of the pre-processing filter for subsequent coding is based on the evaluated metric of the region. | 02-09-2012 |
| 20120032999 | Thin Displays Having Spatially Variable Backlights - A display has a light source layer having control inputs for controlling the light source layer to emit light such that the light output varies smoothly with position in a manner determined by the control inputs. An LCD panel or other spatial light modulator modulates light from the light source layer. The light source layer may be thin. | 02-09-2012 |
| 20120030316 | Unified Media Content Directory Services - A unified media content directory may be created for multiple computing devices that store media content. These computing devices may be in the same network domain or span across different network domains. These computing devices may provide their media content through the unified media content directory based in part on standard technologies. A client that has a limited security permission may be able to access the unified media content directory and the media content identified in the unified media content directory in an intuitive, consistent manner, no matter where the client may be located, assuming the client has adequate digital rights for the media content the client. Additionally, load conditions of the media content servers may be monitored. A load balancing algorithm and high availability for accessing a piece of media content may be provided, if the media content can be accessed through more than one media content server. | 02-02-2012 |
| 20120027090 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 02-02-2012 |
| 20120027079 | Adaptive Interpolation Filters for Multi-Layered Video Delivery - Adaptive interpolation filters for multi-layered video delivery are described. Combinations of such adaptive filters with other pre-processing steps in the context of frame or 2D compatible 3D and 2D scalable video delivery system are also addressed. | 02-02-2012 |
| 20120026405 | System and Method of Creating or Approving Multiple Video Streams - In an embodiment, a system generates multiple video streams. The system includes a color grading device and an appearance mapping device. The appearance mapping device operates on the data generated by the color grading device, and both the output of the color grading device and the output of the appearance mapping device may be displayed (and edited) simultaneously. In this manner, the efficiency of the editing process is improved. | 02-02-2012 |
| 20120026288 | Directed Interpolation and Data Post-Processing - An encoding device evaluates a plurality of processing and/or post-processing algorithms and/or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods/algorithms either in an encoded bit-stream or as side information related to the encoded bitstream. A decoding device or post-processor utilizes the signaled algorithm or selects an algorithm/method based on the signaled method or algorithm. The selection is based, for example, on availability of the algorithm/method at the decoder/post-processor and/or cost of implementation. The video stream may comprise, for example, downsampled multiplexed stereoscopic images and the selected algorithm may include any of upconversion and/or error correction techniques that contribute to a restoration of the downsampled images. | 02-02-2012 |
| 20120019723 | Obtaining a Desired Non-Zero Phase Shift Using Forward-Backward Filtering - Forward and backward filters in cascade establish a specified phase shift in audio or video signals. The backward filter applies its filtering in a backward direction to impart a phase shift to its backward-filtered output that is a function of frequency. The forward filter applies its filtering in a forward direction to impart a phase shift to its forward-filtered output that has the specified phase shift relative the phase shift of the backward filter. Preferably, the two filters are recursive and are applied to signals that represent overlapping segments of the audio or video information. The overlap interval is used for filter initialization. | 01-26-2012 |
| 20120011128 | Non-Parametric Measurement of Media Fingerprint Weak Bits - A value is computed for a feature in an instance of query content and compared to a threshold value. Based on the comparison, first and second bits in a hash value, which is derived from the query content feature, are determined. Conditional probability values are computed for the likelihood that quantized values of the first and the second bits equal corresponding quantized bit values of a target or reference feature value. The conditional probabilities are compared and a relative strength determined for the first and second bits, which directly corresponds to the conditional probability. The bit with the lowest bit strength is selected as the weakbit. The value of the weakbit is toggled to generate a variation of the query hash value. The query may be extended using the query hash value variation. | 01-12-2012 |
| 20120008800 | TELEPHONE ENHANCEMENTS - A telephone user's speech volume is monitored in relation to a minimum volume sufficient for a remote conversant, with whom the user communicates, to audibly perceive the user's speech. Upon detecting that the user's volume exceeds the level sufficient to communication, it is determined whether the user moderates the volume, without being prompted, to the sufficient level. Upon determining that the user moderates the speaking voice without being prompted, positive reinforcement is provided to the user. Results are recorded over multiple phone calls. A frequency of the user moderating the speaking volume without being prompted is tracked from the recorded results. Upon the frequency of the user moderating the volume without being prompted rising over the tracked phone calls, the quality and/or quantity of the positive reinforcement may be improved. The user is thus trained or treated, e.g., audiologically or therapeutically, to self-modulate the volume. | 01-12-2012 |
| 20120008678 | Quantization Control for Variable Bit Depth - The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP). | 01-12-2012 |
| 20110311147 | Quality Evaluation of Sequences of Images - Quality evaluation or consistency computation of images is described. Disparity estimation is performed among images in one or more domains, and a metric based on the disparity estimation is computed to evaluate the quality or consistency. | 12-22-2011 |
| 20110311062 | Loudness Modification of Multichannel Audio Signals - Scaling, by a desired amount s | 12-22-2011 |
| 20110305391 | Image Processing and Displaying Methods for Devices that Implement Color Appearance Models - Embodiments of the invention relate generally to image and display processing, and more particularly, to systems, apparatuses, integrated circuits, computer-readable media, and methods that facilitate the prediction of the appearance of color in images for different viewing environments, including high dynamic range images. In some embodiments a method can modify color associated with a source environment at a target environment. The method can include applying different non-linear functions to transform subsets of data representing a color of a sample at the source environment into transformed subsets of data, and generating data representing a chroma correlate as an appearance correlate independent of data representing a hue-related correlate. The chroma correlate can be configured to generate the color at a device at the target environment. | 12-15-2011 |
| 20110302443 | Method and System for Synchronizing Multiple Secure Clocks - A method for synchronizing secure clocks in a system without using any external clock, a system configured to perform the method, and a computer medium storing system code. Each secure clock is adjustable subject to a set of predetermined adjustment constraints. The intersection of the adjustment constraints of all the clocks is a limit intersection. The clocks may be synchronized to an average adjusted time of the secure clocks (if the average adjusted time is within the limit intersection) or to a substitute average adjusted time within the limit intersection if the average adjusted time is outside the limit intersection. Synchronization can occur in response to a request to adjust at least one of the clocks by a proposed clock adjustment value or to synchronize at least one of them without otherwise adjusting them. | 12-08-2011 |
| 20110299721 | PROJECTION BASED HASHING THAT BALANCES ROBUSTNESS AND SENSITIVITY OF MEDIA FINGERPRINTS - Multiple candidate feature components of media content or projection matrices (or other hash functions, e.g., non-linear projections) are identified. Each of the candidate projection matrices (or other hash functions) includes an array of coefficients that relate to the candidate features. A subgroup of the candidate features or the projection matrices (or other hash functions) are selected based at least partially on an optimized combination of at least two characteristics of the candidate features or projection matrices (or other hash functions). Media fingerprints that uniquely identify the media content are derived from the selected optimized subgroup. Optimal projection matrices (or other hash functions) may be designed. Performance or sensitivity (e.g., search time) characteristics of the fingerprints are thus balanced with robustness characteristics thereof. | 12-08-2011 |
| 20110286519 | METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 11-24-2011 |
| 20110286518 | METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 11-24-2011 |
| 20110286517 | METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 11-24-2011 |
| 20110280300 | Methods and Devices for Sub-Sampling and Interleaving Multiple Images, EG Stereoscopic - Sampled data is packaged in checkerboard format for encoding and decoding. The sampled data may be quincunx sampled multi-image video data (e.g., 3D video or a multi-program stream), and the data may also be divided into sub-images of each image which are then multiplexed, or interleaved, in frames of a video stream to be encoded and then decoded using a standardized video encoder. A system for viewing may utilize a standard video decoder and a formatting device that de-interleaves the decoded sub-images of each frame reformats the images for a display device. A 3D video may be encoded using a most advantageous interleaving format such that a preferred quality and compression ratio is reached. In one embodiment, the invention includes a display device that accepts data in multiple formats. | 11-17-2011 |
| 20110279749 | High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution - A display provides increased contrast and resolution via first LCD panel energized to generate an image and a second LCD panel configured to increase contrast of the image. The second panel is an LCD panel without color filters and is configured to increase contrast by decreasing black levels of dark portions of images (making them blacker or darker) using polarization rotation and filtration. Preferably, the second LCD panel is of higher resolution than the first LCD panel. The panels may be directly illuminated or edge lit, and may be globally or locally dimmed monochrome or multi primary lights that may also include individual control of color intensities for each image or frame displayed. The panels may be placed in any order, but preferably are arranged such that active layers in each panel are as close together as possible. Brightness is maintained by the combination of reusing polarization between the panels and by not going through more than one set of color filters. Improved contrast is a result of using multiple light modulators in series. | 11-17-2011 |
| 20110274281 | Method for Determining Inverse Filter from Critically Banded Impulse Response Data - A method for determining an inverse filter for altering the frequency response of a loudspeaker so that with the inverse filter applied in the loudspeaker's signal path the inverse-filtered loudspeaker output has a target frequency response, and optionally also applying the inverse filter in the signal path, and a system configured (e.g., a general or special purpose processor programmed and configured) to determine an inverse filter. In some embodiments, the inverse filter corrects the magnitude of the loudspeaker's output. In other embodiments, the inverse filter corrects both the magnitude and phase of the loudspeaker's output. In some embodiments, the inverse filter is determined in the frequency domain by applying eigenfilter theory or minimizing a mean square error expression by solving a linear equation system. | 11-10-2011 |
| 20110274280 | Method and System for Frequency Domain Active Matrix Decoding Without Feedback - A perceptually motivated, frequency domain active matrix decoder and decoding method which decodes N audio input signals to generate M audio output signals, where M is greater than N, including by generating M streams of output frequency components which determine the audio output signals, in response to N streams of input frequency components indicative of the audio input signals, determining power ratios from the input frequency components without use of feedback, including at least one power ratio for each critical frequency band in a set of critical frequency bands, and determining gain control values for each of the critical frequency bands from the power ratios including by shaping the power ratios in nonlinear fashion without use of feedback. An active matrix element is steered using the gain control values. | 11-10-2011 |
| 20110273495 | Apparatus and Methods for Color Displays - A display incorporates both narrow-band light emitters and broadband light emitters. The light emitters are controlled to display images according to image data. The narrow-band light emitters can be used to provide highly saturated primary colors. Light from the broadband light sources may be mixed with the broadband light. This can reduce metamerism failures arising from variations in the characteristics of the eyes of observers. | 11-10-2011 |
| 20110268315 | Scalable Media Fingerprint Extraction - Derivation of a fingerprint includes generating feature matrices based on one or more training images, generating projection matrices based on the feature matrices in a training process, and deriving a fingerprint for one or more images by, at least in part, projecting a feature matrix based on the one or more images onto the projection matrices generated in the training process. | 11-03-2011 |
| 20110267482 | MULTIPLEXED IMAGING - An imaging method comprises acquiring image data in which image components are spatially modulated at distinct spatial frequencies, transforming the image data into the Fourier domain and separating the image components in the Fourier domain. The image components may be transformed into the spatial domain. The image components may comprise different colors. In some embodiments saturated pixels are reconstructed by performing an optimization based on differences between image copies in the Fourier domain. Imaging apparatus may perform the imaging methods. | 11-03-2011 |
| 20110267385 | Universal Back Light Unit Control - Display backlight units are controlled with a signal. A message has an address header specifying one of an array of backlight units, and instructions for individually controlling each of the backlight units, particularized accordingly. The message is routed from a controller to a first controllable backlight unit of the display, which controllably responds to its corresponding particularized instructions. The message is sequentially routed in order from each backlight unit to the next in a chained ring configuration. Data from the backlight units is similarly routed back to the controller. | 11-03-2011 |
| 20110261257 | Feature Optimization and Reliability for Audio and Video Signature Generation and Detection - Features are extracted from video and audio content that have a known temporal relationship with one another. The extracted features are used to generate video and audio signatures, which are assembled with an indication of the temporal relationship into a synchronization signature construct. the construct may be used to calculate synchronization errors between video and audio content received at a remote destination. Measures of confidence are generated at the remote destination to optimize processing and to provide an indication of reliability of the calculated synchronization error. | 10-27-2011 |
| 20110254921 | Reconstruction of De-Interleaved Views, Using Adaptive Interpolation Based on Disparity Between the Views for Up-Sampling - Method for reconstructing interleaved views of a 3D image comprising the steps of: receiving interleaved views of a 3D image, de-interleaving said interleaved views into a first view and a second view, each de-interleaved view comprising missing pixels, at each pixel location determining an amount of disparity between said first and second views, for each view interpolating each missing pixel based on the amount of disparity determined at the associated pixel location, wherein when the determined disparity is above a predetermined disparity threshold, the missing pixel value is interpolated from the data of the view to be interpolated only (i.e. the view comprising said missing pixel value), and when the determined disparity is at or below said predetermined disparity threshold, the missing pixel value is interpolated from the data of both views. | 10-20-2011 |
| 20110249819 | AUDIO CHANNEL SPATIAL TRANSLATION - M audio input channels, each associated with a spatial direction, are translated to N audio output channels, each associated with a spatial direction, wherein M and N are positive whole integers, M is three or more, and N is three or more, by deriving the N audio output channels from the M audio input channels, wherein one or more of the M audio input channels is associated with a spatial direction other than a spatial direction with which any of the N audio output channels is associated, and at least one of the one or more of the M audio input channels is mapped to a respective set of at least three of the N output channels. At least three output channels of a set may be associated with contiguous spatial directions. | 10-13-2011 |
| 20110243338 | SURROUND SOUND VIRTUALIZER AND METHOD WITH DYNAMIC RANGE COMPRESSION - Method and system for generating output signals for reproduction by two physical speakers in response to input audio signals indicative of sound from multiple source locations including at least two rear locations. Typically, the input signals are indicative of sound from three front locations and two rear locations (left and right surround sources). A virtualizer generates left and right surround outputs useful for driving front loudspeakers to emit sound that a listener perceives as emitting from rear sources. Typically, the virtualizer generates left and right surround outputs by transforming rear source inputs in accordance with a head-related transfer function. To ensure that virtual channels are well heard in the presence of other channels, the virtualizer performs dynamic range compression on rear source inputs. The dynamic range compression is preferably accomplished by amplifying rear source inputs or partially processed versions thereof in a nonlinear way relative to front source inputs. | 10-06-2011 |
| 20110227900 | Custom PSFs Using Clustered Light Sources - Light sources of a backlight are configured to customize the shape of light emitted from the clusters. The clusters are activated as a unit and modulated as to brightness, but of the customized shape. All clusters can have a similar customized PSF, or the customization of each cluster may be varied in real time. Real time changes of a clusters PSF may be based, for example, an image or a region of the image to be displayed using the clusters. | 09-22-2011 |
| 20110227898 | DIFFUSER FOR LIGHT FROM LIGHT SOURCE ARRAY AND DISPLAYS INCORPORATING SAME - An optical structure placeable between a backlight array of point light sources and a planar display. The structure distributes light emitted by the point light sources to uniformly illuminate the plane of the display, without introducing significant viewing parallax. The emitted light is partially collimated within a preferred angular viewing range, maximizing the display's luminance when viewed from the normal direction. The structure is highly reflective, such that a substantial portion of any non-emitted light rays are internally reflected by the structure, increasing the likelihood that those rays will be subsequently emitted by the structure. | 09-22-2011 |
| 20110222835 | Application Tracks in Audio/Video Containers - Techniques for providing application tracks in a media data container are described. An application descriptor may be extracted from a coded bitstream. The coded bitstream comprises media data to be played by a media presentation system. The application descriptor identifies an application archive (i) that is retrievable by the media presentation system from one or more sources and (ii) that is required by the media presentation system at a set media time associated with the media data. While playing the media data, the media presentation system causes retrieving all of the application archive from the one or more sources before the set media time. | 09-15-2011 |
| 20110221864 | Multiscalar Stereo Video Format Conversion - Techniques for converting 3D images using alpha maps are described. A left-view image and a right-view image may be determined from media data received by a 3D display system. An alpha map specifying a plurality of operations for a plurality of locations that correspond to the first plurality of locations in the images may also be determined. The plurality of operations specified in the alpha map may be applied by the 3D display system to process the left-view and right-view images, and to generate, based on the left-view and right-view images, a third image in an appropriate 3D format. | 09-15-2011 |
| 20110219097 | Techniques For Client Device Dependent Filtering Of Metadata - Methods and apparatuses for media data communication for improved bandwidth utilization are provided. A client device communicates profile information to a server. The server maintains media content data and first metadata category information associated with the media content data. Based upon the profile information, a determination is made as to whether the client device is to utilize the first metadata category information. If to be utilized, media content data as well as the first metadata category information is provided to the client device. If a non-utilization determination is made, media content data is provided without the first metadata category information. In exemplary embodiments, first metadata category information can relate to any of the following: closed captioning, speaker virtualization, three dimensional rendering, global positioning, audio and/or video codecs, volume control, and the like. | 09-08-2011 |
| 20110219067 | Internetworking Domain and Key System - A DNS component functions privately in relation to a group of client devices, each associated with a unique URL maintained with the DNS component that privately identifies the devices within the group. The URL identifies a hierarchy of private domains enforced within the group which, at least implicitly, represents private relationships therein between the devices. Network rules are applied over the group based on the private relationships or the private domains. The devices are securely authenticated within the group. A content sharing service component allows devices within the group to access information content associated with other group devices based, at least partially, on the devices' URLs. A private IP based internet allows group devices secure access to the group from external networks and free access to other devices within the group. | 09-08-2011 |
| 20110216937 | Media Fingerprints that Reliably Correspond to Media Content with Projection of Moment Invariants - A portion of media content is accessed. Components from a first and each subsequent spatial regions of the media content are sampled. Each spatial region has an unsegmented area. Each subsequent spatial region includes those within its area as elements thereof or the spatial regions may partially overlap. The regions may overlap independent of a hierarchical relationship between the regions. A media fingerprint is derived from the components of each of the spatial regions, which reliably corresponds to the media content portion, e.g., over geometric attacks such as rotation. | 09-08-2011 |
| 20110216387 | EDGE LIT LOCALLY DIMMED DISPLAY - An edge lit locally dimmed display has a spatial light modulator illuminated by a light source. The light source is positioned at an edge and behind the spatial light modulator. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator. | 09-08-2011 |
| 20110216163 | Methods For Carrying And Transmitting 3D Z-Norm Attributes In Digital TV Closed Captioning - Methods for carrying and transmitting overlay depth data of an overlay of a stereoscopic image of a display device as a fraction of a viewer distance from the overlay are described. | 09-08-2011 |
| 20110216162 | Multi-View Video Format Control - Techniques for multi-view video format control are provided. In some embodiments, a display video format supported by a display panel is determined. A video format code is extracted from a coded bitstream in which a plurality of images is encoded in two or more source video formats. The video format code identifies a source video format in which a set of images in the plurality of images is encoded. A video format filter is selected to modify the set of images encoded in the source video format to generate another set of images encoded in the display video format. The other set of images encoded in the display video format is sent to the display panel. | 09-08-2011 |
| 20110205494 | Spectral Separation Filters For 3D Stereoscopic D-Cinema Presentation - Spectral separation filters for channels of a 3D image projection incorporate passbands of primary colors. In at least one of the filters, passbands are present in more than 3 primary colors. A set of two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional primary passbands of the first filter allow for an increased color space in projections through the filters compared to filters only having red, green, and blue primaries. The added flexibility of the increased color space is utilized to more closely match a color space and white point of a projector in which the filters are used. | 08-25-2011 |
| 20110194758 | REPRESENTING AND RECONSTRUCTING HIGH DYNAMIC RANGE IMAGES - A high dynamic range image can be recovered from a full-resolution lower-dynamic-range image and a reduced-resolution higher-dynamic-range image. Information regarding higher spatial frequencies may be obtained by extracting high spatial frequencies from the lower-dynamic-range image. In some embodiments an approximate impulse-response function is determined by comparing the higher- and lower-dynamic range images. A scaling image obtained by applying the impulse-response function to a high-frequency band of the lower-dynamic range image is combined with an upsampled higher-dynamic range image to yield a reconstructed image. | 08-11-2011 |
| 20110194712 | STEREOPHONIC WIDENING - Widening stereophonic response is achieved in sound reproduction systems with at least two loudspeakers. A stereo signal input is accessed, which includes multiple frequency components. The loudspeakers are close to each other. A frequency range of the frequency components is decorrelated, e.g., upon pre-processing the stereo signal. The sound reproduction system's stereophonic response is widened, based on the decorrelation. | 08-11-2011 |
| 20110194618 | COMPATIBLE COMPRESSION OF HIGH DYNAMIC RANGE, VISUAL DYNAMIC RANGE, AND WIDE COLOR GAMUT VIDEO - A first image stream has a first dynamic range and a first color space. First and the second image streams are received in a layered codec. The second image stream has a second dynamic range, which is higher than the first dynamic range. The first image stream is in the codec's base layer; the second image stream is in its enhancement layer. The first image stream is encoded to obtain an encoded image stream, which is decoded to obtain a decoded image stream. The decoded image stream is converted from the first non-linear or linear color space to a second, different color space to obtain a color converted image stream. A higher dynamic range image representation of the color converted image stream is generated to obtain a transformed image stream. Inverse tone mapping parameters are generated based on the transformed image stream and the second image stream. | 08-11-2011 |
| 20110193896 | Backlight Simulation at Reduced Resolutions to Determine Spatial Modulation of Light for High Dynamic Range Images - Embodiments of the invention relate generally to generating images with an enhanced range of brightness levels, and more particularly, to facilitating high dynamic range imaging by adjusting pixel data and/or using predicted values of luminance, for example, at different resolutions. In at least one embodiment, a method generates an image with an enhanced range of brightness levels. The method can include accessing a model of backlight that includes data representing values of luminance for a number of first samples. The method also can include inverting the values of luminance, as well as upsampling inverted values of luminance to determine upsampled values of luminance. Further, the method can include scaling pixel data for a number of second samples by the upsampled values of luminance to control a modulator to generate an image. | 08-11-2011 |
| 20110193895 | High Dynamic Range Display with Rear Modulator Control - Embodiments of the invention relate generally to computer-based image processing, and more particularly, to systems, computer-readable mediums, methods, and apparatuses to operate a rear modulator in a high dynamic range display to, among other things, characterize input images into pixel characteristics which may be data-reduced representations of a group of pixels corresponding to the input image, and to relate a modulation value intensity image to a weighted combination of the pixel characteristics. The modulation value intensity image may be used to derive a rear modulator drive signal, which, turn, may be configured to control one or more modulating elements to generate a low resolution image of the input image at the rear modulator. | 08-11-2011 |
| 20110193610 | Efficient Computation of Driving Signals for Devices with Non-Linear Response Curves - Apparatus comprising an input connected to receive an input signal, a lookup table comprising a plurality of input entries and first and second output entries for each input entry. The look up table receives the input signal and returns a lower input entry, an upper input entry, the second output entry for the lower input entry, and the first output entry for the upper input entry. A first subtractor subtracts the lower input entry from the input signal to produce a first difference. A second subtractor subtracts the input signal from the upper input entry to produce a second difference. First and second multipliers multiply the first and second differences by the first output entry for the upper input entry and the second output entry for the lower input entry, respectively, to produce first and second products. An adder adds the first and second products to produce an output signal. | 08-11-2011 |
| 20110188704 | Content Identification and Quality Monitoring - Content identification and quality monitoring are provided. The method involves obtaining a first fingerprint derived from a first media content, processing the first media content to generate a second media content, obtaining a second fingerprint derived from the second media content, and comparing the first fingerprint and the second fingerprint to determine one or more of: a similarity between the first fingerprint and the second fingerprint that indicates that the second media content is generated from the first media content or a difference between the first fingerprint and the second fingerprint to identify a quality degradation between the first media content and the second media content. | 08-04-2011 |
| 20110187715 | Improved Illumination and Light Recycling in Projection Systems - A light modulator configured to modulate at least two channels of an image to be projected and a lighting system configured to illuminate portions of the modulator corresponding to each channel with light having properties consistent with the channel. The channels comprise, for example, left and right channels of a 3D projection (e.g., a digital cinema projection). In one embodiment, the channels are provided by a multi-sectored filter wheel having at least one filter section for a first channel and at least one filter section for a second channel, where boundaries between the sectors are different in each section. | 08-04-2011 |
| 20110175949 | Power Management For Modulated Backlights - Power levels of a backlight are adjusted in a number of ways and based on a number of criteria. The adjustments result in a lower power consumption and, in some cases, may enhance audience attention to important objects in a scene. The adjustments comprise, for example, a combination of ramping down power (lowering final display brightness) in concert with corresponding compensatory LCD adjustments (increasing final display brightness). The adjustments may also include, for example, system dimming after ramp down/LCD adjustments are exhausted, or the shifting of an LDR2HDR curve. | 07-21-2011 |
| 20110170792 | Encoding and Decoding Architecture of Checkerboard Multiplexed Image Data - A device includes a coder or a codec configured for interleaved image data utilizing diamond shaped blocks for motion estimation and/or motion compensation and utilizing square or orthogonal transforms of residual data. In various embodiments, the decoder may be configured, among others, to perform de-blocking on edges of the diamond shaped blocks and/or data padding at boundaries of the image data. Additionally a method is proposed in which at least one of a transform and quantization process to be applied to de-multiplexed data is modified. One application is to combine left and right stereoscopic images, interleaved in a checkerboard manner. | 07-14-2011 |
| 20110170591 | Adaptive Video Encoder Control - A value of one or more Lagrangian multipliers is adaptively estimate and update based, at least in part, on the video source statistics or dynamic programming. Methods, techniques, and systems involve determining a first Lagrangian multiplier with a video encoder, and updating a second Lagrangian multiplier with the first Lagrangian multiplier. The system can include a Lagrangian multiplier Estimation Module that estimates the Lagrangian multiplier, and a multiplier Update Module that updates the current Lagrangian multiplier using the estimated Lagrangian multiplier. The Online Lagrangian Multiplier Estimation Module may function with Rate Distortion Slope Estimation with Rate Distortion Optimized Mode Decision; Rate Distortion Slope Estimation with Local Approximation; Rate Distortion Slope Estimation with Local Information; or Rate Distortion Slope Estimation with Global Information. The Lagrangian Multiplier Update Module may function with Direct Update; Step Size Update; Sliding Window Update; or Periodical Update. | 07-14-2011 |
| 20110169881 | System and Methods for Applying Adaptive Gamma in Image Processing for High Brightness and High Dynamic Range Displays - Systems and methods of image processing are provided for a display having a light source modulation layer and a display modulation layer. A section of a perceptual curve, such as a DICOM curve, is extracted for each frame of image data, based on a profile of expected luminance on the display modulation layer from light emitted by the light source modulation layer. The section of the perceptual curve may be used to determine a desired-total response curve which maps display modulation layer input control values to corresponding output luminance values. The desired-total response curve and a display modulator-specific response curve may be applied to image data to generate control values for driving the display modulation layer. | 07-14-2011 |
| 20110164755 | Enhancing the Reproduction of Multiple Audio Channels - This invention relates to the field of multichannel audio. More particularly, the invention relates to a method for the provision of audio channels suitable for application to loudspeakers located above conventional front loudspeakers. | 07-07-2011 |
| 20110164677 | Complexity Allocation for Video and Image Coding Applications - Coding method complexity types are assigned to video for combinations of coding decision levels associated with a sequence of pictures, a group of pictures, a scene, a region of the scene or picture, a block or macroblock. Multiple coding units are encoded as a function of complexity and determined from the coding decision levels. A first coding decision level is associated with determining a first complexity and a first coding method type for the sequence of pictures. A second coding decision level is associated with determining a second complexity and a second coding method type for the pictures or scene. The picture or sequence includes the coding units. A third coding decision level is associated with determining a third complexity and a third coding method type for the coding units. | 07-07-2011 |
| 20110164113 | Conversion of Interleaved Data Sets, Including Chroma Correction and/or Correction of Checkerboard Interleaved Formatted 3D Images - Conversion of interleaved data and/or correction of color samples or other data are corrected by recognizing an underlying arrangement or format of different data sets within a data stream and a conversion process applied that causes bleeding between the sets. The data sets are, for example, separate channel views of a 3D display, and the corruption occurs, for example, upon up-conversion of color samples that take into account both views together rather than individually. The invention is embodied, for example, as part of a playback device, display, or as a stand alone converter box that corrects the corrupted samples by at least one of substitution, filtering, or interpolation with appropriately selected samples (e.g., neighboring samples of a same view). | 07-07-2011 |
| 20110164112 | Compatible Stereoscopic Video Delivery - Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded. | 07-07-2011 |
| 20110158363 | Method for Determining Updated Filter Coefficients of an Adaptive Filter Adapted by an LMS Algorithm with Pre-Whitening - The application relates to a method for determining at least one updated filter coefficient of an adaptive filter ( | 06-30-2011 |
| 20110153417 | Networking With Media Fingerprints - An information element, uniquely related to a media fingerprint that is uniquely derived from a media content portion during play out thereof, is provided to a first web page. The first web page stores the information element with an associated first information set, which relates to one or more media fingerprints. One or more second web pages store at least a second information set, which relates to one or more media fingerprints. The first and at least second web pages are accessed and crawled in relation to the first and the at least second information sets. One or more information elements, which are common to the first and the at least second information sets, are indexed. The first web page and the at least one of the second web pages are related based on the indexed common information elements. | 06-23-2011 |
| 20110153050 | Robust Media Fingerprints - Robust media fingerprints are derived from a portion of audio content. A portion of content in an audio signal is categorized. The audio content is characterized based, at least in part, on one or more of its features. The features may include a component that relates to one of several sound categories, e.g., speech and/or noise, which may be mixed with the audio signal. Upon categorizing the audio content as free of the speech or noise related components, the audio signal component is processed. Upon categorizing the audio content as including the speech related component and/or the noise related components, the speech or noise related components are separated from the audio signal. The audio signal is processed independent of the speech related component and/or the noise related component. Processing the audio signal includes computing the audio fingerprint, which ably corresponds to the audio signal. | 06-23-2011 |
| 20110142348 | Signature Derivation for Images - Deriving a fingerprint of an image corresponding to media content involves selecting at least two different regions of the same image, determining a relationship between the two regions, and deriving a fingerprint of the image based on the relationship between the two regions of the image. | 06-16-2011 |
| 20110142247 | MMethod for Adaptive Control and Equalization of Electroacoustic Channels - An electroacoustic channel soundfield is altered. An audio signal is applied by an electromechanical transducer to an acoustic space, causing air pressure changes therein. Another audio signal is obtained by a second electromechanical transducer, responsive to air pressure changes in the acoustic space. A transfer function estimate of the electroacoustic channel is established, responsive to the second audio signal and part of the first audio signal. The transfer function estimate is derived to be adaptive to temporal variations in the electroacoustic channel transfer function. Filters are obtained with transfer functions based on the transfer function estimate. Part of the first audio signal is filtered therewith. | 06-16-2011 |
| 20110142132 | Overlapped Block Disparity Estimation and Compensation Architecture - Overlapped block disparity estimation and compensation is described. Compensating for images with overlapped block disparity compensation (OBDC) involves determining if OBDC is enabled in a video bit stream, and determining if OBDC is enabled for one or more macroblocks that neighbor a first macroblock within the video bit stream. The neighboring macroblocks may be transform coded. If OBDC is enabled in the video bit stream and for the one or more neighboring macroblocks, predictions may be made for a region of the first macroblock that has an edge adjacent with the neighboring macroblocks. OBDC can be causally applied. Disparity compensation parameters or modes may be shared amongst views or layers. A variety of predictions may be used with causally-applied OBDC. | 06-16-2011 |
| 20110137662 | Audio Signal Transformatting - This invention relates to reformatting a plurality of audio input signals from a first format to a second format by applying them to a dynamically-varying transformatting matrix. In particular, this invention obtains information attributable to the direction and intensity of one or more directional signal components, calculates the transformatting matrix based on the first and second rules, and applies the audio input signals to the transformatting matrix to produce output signals. | 06-09-2011 |
| 20110135005 | Encoder Optimization of Stereoscopic Video Delivery Systems - Controlling a feature of an encoding process for regions of an image pattern representing more than one image when the regions include an amount of disparity in the represented images that would result in cross-contamination between the represented images if encoded with the feature. The control may be, for example, any of turning the encoding feature off, using the encoding feature less often than when encoding an image pattern representing a single image, negatively biasing the encoding feature, and enabling the encoding feature for regions determined to have zero or near zero disparity and disabling the feature for all other regions. The represented images comprise, for example, any of a stereoscopic view, multiple stereoscopic views, multiple views of a same scene, and multiple unrelated views. | 06-09-2011 |
| 20110125507 | Method and System for Frequency Domain Postfiltering of Encoded Audio Data in a Decoder - A decoder configured to generate decoded audio data (e.g., decoded speech data) and including a postfilter coupled and configured to filter encoded audio data in the frequency domain, methods for frequency domain postfiltering of encoded audio data in a decoder, and methods for decoding encoded audio data in a decoder including by postfiltering encoded audio data in the frequency domain in the decoder. In some embodiments, the decoder is configured to decode input encoded audio without performing any time-to-frequency domain transform on encoded audio data to prepare data for postfiltering. Typically, the postfiltering improves the quality of the decoded audio signal by attenuating spectral valley regions thereof to remove excess quantization noise present in the encoded input audio while preserving formants of the decoded audio signal to avoid introducing unnecessary distortion. | 05-26-2011 |
| 20110122289 | MULTIPLE EXPOSURE METHODS AND APPARATUS FOR ELECTRONIC CAMERAS - A method for capturing multiple sets of image data with an electronic camera having a shutter and an electronic shutter for selectively allowing light to reach an image sensor comprises opening the shutter and the electronic shutter, allowing light to reach the image sensor for a first exposure time, closing the electronic shutter, reading out pixel data captured during the first exposure time, allowing light to reach the image sensor for a second exposure time, and, reading out pixel data captured during the second exposure time. The method may be used to obtain multiple differently exposed images of a scene for combination into a high dynamic range image. | 05-26-2011 |
| 20110119061 | METHOD AND SYSTEM FOR DIALOG ENHANCEMENT - A method and system for enhancing dialog determined by an audio input signal. In some embodiments the input signal is a stereo signal, and the system includes an analysis subsystem configured to analyze the stereo signal to generate filter control values, and a filtering subsystem including upmixing circuitry configured to upmix the input signal to generate a speech channel and non-speech channels and a peaking filter configured to filter the speech channel to enhance dialog while being steered by at least one of the control values. The filtering subsystem also includes ducking circuitry for attenuating the non-speech channels while being steered by at least some of the control values, and downmixing circuitry configured to combine outputs of the peaking filter and ducking circuitry to generate a filtered stereo output. In some embodiments, the system is configured to downmix a multichannel input signal to generate a downmixed stereo signal, an analysis subsystem is configured to analyze the downmixed stereo signal to generate filter control values, and a filtering subsystem is configured to generate a dialog-enhanced audio signal in response to the input signal while being steered by at least some of the filter control values. Preferably, the filter control values are generated without use of feedback including by generating power ratios (for pairs of speech and non-speech channels) and preferably also shaping in nonlinear fashion and scaling at least one of the power ratios. | 05-19-2011 |
| 20110106533 | Multi-Microphone Voice Activity Detector - A dual microphone voice activity detector system is presented. A voice activity detector system estimates the signal level and noise level at each microphone. A level differential between the two microphones of nearby sounds such as the signal is greater than the level differential of more distant sounds such as the noise. Thus, the voice activity detector detects the presence of nearby sounds. | 05-05-2011 |
| 20110103479 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 05-05-2011 |
| 20110103478 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 05-05-2011 |
| 20110103477 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 05-05-2011 |
| 20110103476 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 05-05-2011 |
| 20110103473 | Video Compression Under Multiple Distortion Constraints - Video compression is performed under multiple distortion constraints. Video coding includes determining a first set of Lagrangian cost values for multiple coding modes using a first distortion metric, determining a second set of Lagrangian cost values for the multiple coding modes using a second distortion metric, and selecting one of the coding modes base first set of Lagrangian cost values and the second set of Lagrangian cost values to encode a pixel block using the selected coding mode. The distortion metrics can include information associated with video display characteristics such as screen display size, video processing performance, a distortion characteristic, a temporal characteristic, or a spatial characteristic. The distortion metrics can also include characteristics of multiple video displays, such as parameters for usage, importance, design, and the technology type of the video displays. | 05-05-2011 |
| 20110103471 | High Precision Encoding and Decoding of Video Images - Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly matching the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the “quantization parameter” or “QP”. The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range to reduced contrast regions of an image to extend the precision with which the low-contrast portions are compression coded. | 05-05-2011 |
| 20110103470 | High Precision Encoding and Decoding of Video Images - Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly matching the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the “quantization parameter” or “QP”. The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range to reduced contrast regions of an image to extend the precision with which the low-contrast portions are compression coded. | 05-05-2011 |
| 20110096838 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 04-28-2011 |
| 20110096837 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 04-28-2011 |
| 20110096694 | Estimating Wireless Processing Device Queue Length and Estimating Signal Reception Quality in a Wireless Network - The present invention may be used to estimate operational characteristics of devices that transmit and receive streams of information in a communication system. In one application, the level of occupancy of a FIFO buffer in a processing device such as a router or wireless access point is estimated by monitoring packets transmitted by the processing device. Estimates of the operational characteristics can be used to control communications in the system so that the overall performance is improved. Techniques that can be used to mitigate effects of low signal-to-noise ratio conditions are also disclosed. | 04-28-2011 |
| 20110090960 | Rate Control Model Adaptation Based on Slice Dependencies for Video Coding - Statistics for estimating quantization factors of a coding-unit type (e.g., B-coded or I-coded) pictures are determined from other, possibly different (e.g., P-coded) pictures, or previously coded coding-units. Bit rate and quality relationships between such coding-unit types may be used with the quantization parameters. Estimating bit rate and quality relationships between coding-unit types enables accurate rate control for pictures regardless of their coding-unit type. Bit rate and quality relationships between coding-unit types can be used with multiple rate control models to increase compression. Rate control parameters may be adjusted with statistics generated by a motion estimation and compensation framework. Rate control performance may be controlled in transcoding compressed bit streams. | 04-21-2011 |
| 20110082575 | Concealing Audio Artifacts - At least one segment is identified in an audio signal. The audio segment is associated with an artifact within the audio signal and has a time duration. At least one stored sound clip is retrieved, which has a time duration that exceeds the time duration associated with the audio segment. The retrieved sound clip is mixed with the audio signal and the retrieved sound clip audibly compensates for the audio artifact. | 04-07-2011 |
| 20110054887 | Method and Apparatus for Maintaining Speech Audibility in Multi-Channel Audio with Minimal Impact on Surround Experience - In one embodiment the present invention includes a method of improving audibility of speech in a multi-channel audio signal. The method includes comparing a first characteristic and a second characteristic of the multi-channel audio signal to generate an attenuation factor. The first characteristic corresponds to a first channel of the multi-channel audio signal that contains speech and non-speech audio, and the second characteristic corresponds to a second channel of the multi-channel audio signal that contains predominantly non-speech audio. The method further includes adjusting the attenuation factor according to a speech likelihood value to generate an adjusted attenuation factor. The method further includes attenuating the second channel using the adjusted attenuation factor. | 03-03-2011 |
| 20110050559 | FIELD SEQUENTIAL DISPLAY OF COLOR IMAGES WITH COLOR SELECTION - A color display has a monochrome modulator. An active area of the modulator is illuminated by an array of light sources. The light sources include light sources of three or more colors. The intensities of the light sources may be adjusted to project desired luminance patterns on an active area of the modulator. In a fast field sequential method different colors are projected sequentially. The modulator is set to modulate the projected luminance patterns to display a desired image. In a slow field sequential method, colors are projected simultaneously and the modulator is set to modulate most important colors in the image. | 03-03-2011 |
| 20110038411 | Method and System for Improving Compressed Image Chroma Information - Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image. | 02-17-2011 |
| 20110035382 | Associating Information with Media Content - Information is associated with media content. Upon an upload of a portion of the media content, a media fingerprint is derived therefrom. The media fingerprint includes a unique representation of the media content portion, which is derived from a characteristic component of the media content portion. The information is associated with the media content portion based on the derived media fingerprint. Upon streaming the media content portion, the associated information is linked and presented in real time with the media content portion. Upon upload of the media content portion, the media fingerprint may be derived therefrom at upload time or at any time subsequent to upload time and prior to presentation time. The media content may comprise an original instance of content or a derivative instance of the original content. | 02-10-2011 |
| 20110033063 | SURROUND SOUND GENERATION FROM A MICROPHONE ARRAY - A signal from each of an array of microphones is analyzed. For at least one subset of microphone signals, a time difference is estimated, which characterizes the relative time delays between the signals in the subset. A direction is estimated from which microphone inputs arrive from one or more acoustic sources, based at least partially on the estimated time differences. The microphone signals are filtered in relation to at least one filter transfer function, related to one or more filters. A first filter transfer function component has a value related to a first spatial orientation of the arrival direction, and a second component has a value related to a spatial orientation that is substantially orthogonal in relation to the first. A third filter function may have a fixed value. A driving signal for at least two loudspeakers is computed based on the filtering. | 02-10-2011 |
| 20110032248 | RETENTION AND OTHER MECHANISMS OR PROCESSES FOR DISPLAY CALIBRATION - A “burn-in” is purposely performed on an LCD panel. The “burn-in” is calculated to compensate for an artifact or malfunction of a display using the LCD panel. The “burn-in” may be calculated, for example, to compensate for brightness levels in a light field emanating from the backlight of a dual modulation display. The burn in performed, for example, during periods of “power-off” of the display (e.g., when the backlight of an LCD is off). | 02-10-2011 |
| 20110029288 | Method And Apparatus For Improving Noise Discrimination In Multiple Sensor Pairs - Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination. | 02-03-2011 |
| 20110022633 | DISTRIBUTED MEDIA FINGERPRINT REPOSITORIES - Media fingerprints, which are each derived from and uniquely correspond to a portion of media content, are stored over a distributed database. An instance of one or more information containers of the distributed database are each disposed over two or more computing devices, which are communicatively linked over a data network. The media fingerprints are distributed among the information containers based on a criterion that relates individually to each of the media fingerprints. Upon a query directed to one of the media fingerprints, at least one of the two or more computing devices is selected based on the criterion. The query is executed over the distributed database instance of the selected computing device. | 01-27-2011 |
| 20110022589 | ASSOCIATING INFORMATION WITH MEDIA CONTENT USING OBJECTS RECOGNIZED THEREIN - At least one object within a portion of media content is recognized. The object is essentially a feature of the media content portion. Information is associated with the recognized object based on recognizing the object. | 01-27-2011 |
| 20110010168 | MULTIMODE CODING OF SPEECH-LIKE AND NON-SPEECH-LIKE SIGNALS - The invention relates to the coding of audio signals that may include both speech-like and non-speech-like signal components. It describes methods and apparatus for code excited linear prediction (CELP) audio encoding and decoding that employ linear predictive coding (LPC) synthesis filters controlled by LPC parameters, a plurality of codebooks each having codevectors, at least one codebook providing an excitation more appropriate for non-speech-like signals and at least one codebook providing an excitation more appropriate for speech-like signals, and a plurality of gain factors, each associated with a codebook. The encoding methods and apparatus select from the codebooks codevectors and/or associated gain factors by minimizing a measure of the difference between the audio signal and a reconstruction of the audio signal derived from the codebook excitations. The decoding methods and apparatus generate a reconstructed output signal from the LPC parameters, codevectors, and gain factors. | 01-13-2011 |
| 20100328537 | SYSTEM AND METHOD FOR BACKLIGHT AND LCD ADJUSTMENT - In one embodiment the present invention includes a display system for displaying video. The display system includes a backlight layer and an LCD layer. The display system controls the backlight layer and the LCD layer to emulate a cathode ray tube response. This emulation may be accomplished by applying a gamma function to a gamma corrected input signal. In this manner, the effects resulting from the “crushed blacks” phenomenon may be reduced. | 12-30-2010 |
| 20100316118 | ADAPTIVE MOTION INFORMAITON COST ESTIMATION WITH DYNAMIC LOOK-UP TABLE UPDATING - Adaptive motion information cost estimation is achieved in processing video information. A transmission cost is estimated that is associated with encoding a motion vector difference (mvd) in motion vectors that describe a motion characteristic of the video information. The mvd is encoded based on minimizing a rate estimation mismatch associated with the motion vectors. The encoding step includes computing a bit count associated with the mvd using CABAC. A value is indexed that corresponds to the cost from one or more entries in the lookup table. The cost relates to context or content characteristics associated with the video information. The lookup table is adaptively updated based on a change in the contextual information or content characteristics. The value is dynamically adjustable based on the change. | 12-16-2010 |
| 20100312890 | DYNAMIC DNS SYSTEM FOR PRIVATE NETWORKS - A DNS component functions privately in relation to a group of client devices, each associated with a unique URL maintained with the DNS component that privately identifies the devices within the group. The URL identifies a hierarchy of private domains enforced within the group which, at least implicitly, represents private relationships therein between the devices. Network rules are applied over the group based on the private relationships or the private domains. The devices are securely authenticated within the group. A content sharing service component allows devices within the group to access information content associated with other group devices based, at least partially, on the devices' URLs. A private IP based internet allows group devices secure access to the group from external networks and free access to other devices within the group. | 12-09-2010 |
| 20100289836 | PARALLAX REDUCTION - Parallax in an optical device is reduced by apply one or a combination of several disclosed techniques, including reduced solid angle or increased collimation of light sources, increased diffusion/scattering at an output of the device, and/or reflective structures for collimation and containment of reflected light. The techniques are advantageously applied to a backlight LCD display, and particularly to high dynamic range dual modulation displays. | 11-18-2010 |
| 20100284542 | Matrix Decoder - This audio matrix surround decoder requires minimal digital processing, useful in portable applications, particularly in playback from a portable player using a headphone or loudspeaker virtualizer. In one embodiment it pans inputs Lt and Rt to outputs associated with front directions in response to a measure of the sum of Lt and Rt being greater than a measure of the difference between Lt and Rt, and pans Lt and Rt to outputs associated with rear directions in response to a measure of the sum of Lt and Rt being less than a measure of the difference between Lt and Rt. Lt and Rt are modified to shift the direction of reproduced signals. | 11-11-2010 |
| 20100277515 | MITIGATION OF LCD FLARE - LCD flare is reduced by adjusting a backlight to a level where the LCD flare is not visible, and then introducing a simulated veiling glare. The glare is further adjusted by the backlight simulation to hide the geometry (e.g., LED array) of the backlight. The reduction is performed, for example, by processing signals for driving the backlight and a front modulator in a dual modulation display device. | 11-04-2010 |
| 20100250258 | Method for Correcting Metadata Affecting the Playback Loudness of Audio Information - A coded signal conveys encoded audio information and metadata that may be used to control the loudness of the audio information during its playback. If the values for these metadata parameters are set incorrectly, annoying fluctuations in loudness during playback can result. The present invention overcomes this problem by detecting incorrect metadata parameter values in the signal and replacing the incorrect values with corrected values. | 09-30-2010 |
| 20100238350 | Deriving Video Signatures That Are Insensitive to Picture Modification and Frame-Rate Conversion - A signature that can be used to identify video content in a series of video frames is generated by first calculating the average and variance of picture elements in a low-resolution composite image that represents a temporal and spatial composite of the video content in the series of frames. The signature is generated by applying a hash function to values derived from the average and variance composite representations. The video content of a signal can be represented by a set of signatures that are generated for multiple series of frames within the signal. A set of signatures can provide reliable identifications despite intentional and unintentional modifications to the content. | 09-23-2010 |
| 20100231603 | ARTIFACT MITIGATION METHOD AND APPARATUS FOR IMAGES GENERATED USING THREE DIMENSIONAL COLOR SYNTHESIS - Embodiments of the invention relate generally to generating images, and more particularly, to systems, apparatuses, integrated circuits, computer-readable media, and methods to facilitate the use of three dimensional color synthesis techniques to reproduce colors properly using, for example, two sub-pixel mosaics, at a boundary between two colors. A method can include receiving into a color element a first colored illuminant and a second colored illuminant. The method also can include determining that the color element is configured to generate a color that has one or more color characteristics for a portion of the reproduced image. Further, the method can include modifying at least one of the first colored illuminant and the second colored illuminant to adjust the one or more color characteristics into a range of values associated with a portion of an image that corresponds to the portion of the reproduced image. | 09-16-2010 |
| 20100214282 | APPARATUS FOR PROVIDING LIGHT SOURCE MODULATION IN DUAL MODULATOR DISPLAYS - Dual modulator displays are disclosed incorporating a phosphorescent plate interposed in the optical path between a light source modulation layer and a display modulation layer. Spatially modulated light output from the light source modulation layer impinges on the phosphorescent plate and excites corresponding regions of the phosphorescent plate which in turn emit light having different spectral characteristics than the light output from the light source modulation layer. Light emitted from the phosphorescent plate is received and further modulated by the display modulation layer to provide the ultimate display output. | 08-26-2010 |
| 20100211388 | Speech Enhancement with Voice Clarity - A method for enhancing speech components of an audio signal composed of speech and noise components processes subbands of the audio signal, the processing including controlling the gain of the audio signal in ones of the subbands, wherein the gain in a subband is controlled at least by processes that convey either additive/subtractive differences in gain or multiplicative ratios of gain so as to reduce gain in a subband as the level of noise components increases with respect to the level of speech components in the subband and increase gain in a subband when speech components are present in subbands of the audio signal, the processes each responding to subbands of the audio signal and controlling gain independently of each other to provide a processed subband audio signal. | 08-19-2010 |
| 20100208143 | APPARATUS AND METHODS FOR BOOSTING DYNAMIC RANGE IN DIGITAL IMAGES - A method for increasing dynamic range of original image data representing an image comprises applying an expansion function to generate from the original image data expanded data having a dynamic range greater than that of the original image data and, obtaining an expand map comprising data indicative of a degree of luminance of regions associated with pixels in the image. The method then combines the original image data and the expanded data according to the expand map to yield enhanced image data. Apparatus for boosting the dynamic range of image data comprises a dynamic range expander that produces expanded data, a luminance analyzer that produces an expand map and a combiner that combines the original and expanded data according to a variable weighting provided by the expand map. | 08-19-2010 |
| 20100205174 | Audio/Video Fingerprint Search Accuracy Using Multiple Search Combining - A method for use in identifying a segment of audio and/or video information comprises obtaining a query fingerprint at each of a plurality of spaced-apart time locations in said segment, searching fingerprints in a database for a potential match for each such query fingerprint, obtaining a confidence level of a potential match to a found fingerprint in the database for each such query fingerprint, and combining the results of searching for potential matches, wherein each potential match result is weighted by respective confidence level. A confidence level may be a function of at least one or both of (1) a measure of difference between a query fingerprint and a found fingerprint and (2) the relative timing relationship between the time location of a query fingerprint and the time location of a found fingerprint. | 08-12-2010 |
| 20100202632 | LOUDNESS MODIFICATION OF MULTICHANNEL AUDIO SIGNALS - Scaling, by a desired amount s | 08-12-2010 |
| 20100198593 | Speech Enhancement with Noise Level Estimation Adjustment - Enhancing speech components of an audio signal composed of speech and noise components includes controlling the gain of the audio signal in ones of its subbands, wherein the gain in a subband is reduced as the level of estimated noise components increases with respect to the level of speech components, wherein the level of estimated noise components is determined at least in part by (1) comparing an estimated noise components level with the level of the audio signal in the subband and increasing the estimated noise components level in the subband by a predetermined amount when the input signal level in the subband exceeds the estimated noise components level in the subband by a limit for more than a defined time, or (2) obtaining and monitoring the signal-to-noise ratio in the subband and increasing the estimated noise components level in the subband by a predetermined amount when the signal-to-noise ratio in the subband exceeds a limit for more than a defined time. | 08-05-2010 |
| 20100198378 | Audio Processing Using Auditory Scene Analysis and Spectral Skewness - A method for controlling the loudness of auditory events in an audio signal. In an embodiment, the method includes weighting the auditory events (an auditory event having a spectrum and a loudness), using skewness in the spectra and controlling loudness of the auditory events, using the weights. Various embodiments of the invention are as follows: The weighting being proportionate to the measure of skewness in the spectra; the measure of skewness is a measure of smoothed skewness; the weighting is insensitive to amplitude of the audio signal; the weighting is insensitive to power; the weighting is insensitive to loudness; and any relationship between signal measure and absolute reproduction level is not known at the time of weighting; the weighting includes weighting auditory-event-boundary importance, using skewness in the spectra. | 08-05-2010 |
| 20100185439 | SEGMENTING AUDIO SIGNALS INTO AUDITORY EVENTS - In one aspect, the invention divides an audio signal into auditory events, each of which tends to be perceived as separate and distinct, by calculating the spectral content of successive time blocks of the audio signal, calculating the difference in spectral content between successive time blocks of the audio signal, and identifying an auditory event boundary as the boundary between successive time blocks when the difference in the spectral content between such successive time blocks exceeds a threshold. In another aspect, the invention generates a reduced-information representation of an audio signal by dividing an audio signal into auditory events, each of which tends to be perceived as separate and distinct, and formatting and storing information relating to the auditory events. Optionally, the invention may also assign a characteristic to one or more of the auditory events. Auditory events may be determined according to the first aspect of the invention or by another method. | 07-22-2010 |
| 20100179808 | Speech Enhancement - A method for enhancing speech includes extracting a center channel of an audio signal, flattening the spectrum of the center channel, and mixing the flattened speech channel with the audio signal, thereby enhancing any speech in the audio signal. Also disclosed are a method for extracting a center channel of sound from an audio signal with multiple channels, a method for flattening the spectrum of an audio signal, and a method for detecting speech in an audio signal. Also disclosed is a speech enhancer that includes a center-channel extract, a spectral flattener, a speech-confidence generator, and a mixer for mixing the flattened speech channel with original audio signal proportionate to the confidence of having detected speech, thereby enhancing any speech in the audio signal. | 07-15-2010 |
| 20100177903 | Hybrid Derivation of Surround Sound Audio Channels By Controllably Combining Ambience and Matrix-Decoded Signal Components - Ambience signal components are obtained from source audio signals, matrix-decoded signal components are obtained from the source audio signals, and the ambience signal components are controllably combined with the matrix-decoded signal components. Obtaining ambience signal components may include applying at least one decorrelation filter sequence. The same decorrelation filter sequence may be applied to each of the input audio signals or, alternatively, a different decorrelation filter sequence may be applied to each of the input audio signals. | 07-15-2010 |
| 20100174540 | Time-Varying Audio-Signal Level Using a Time-Varying Estimated Probability Density of the Level - Methods, media and apparatus for smoothing a time-varying level of a signal. A method includes estimating a time-varying probability density of a short-term level of the signal and smoothing a level of the signal by using the probability density. The signal may be an audio signal. The short-term level and the smoothed level may be time series, each having current and previous time indices. Here, before the smoothing, computing a probability of the smoothed level at the previous time index may occur. Before the smoothing, calculating smoothing parameters using the probability density may occur. Calculating the smoothing parameters may include calculating the smoothing parameters using the smoothed level at the previous time index, the short-term level at the current time index and the probability of the smoothed level at the previous time index. Calculating the smoothing parameters may include calculating the smoothing parameters using breadth of the estimated probability density. | 07-08-2010 |
| 20100171817 | CONVERSION, CORRECTION, AND OTHER OPERATIONS RELATED TO MULTIPLEXED DATA SETS - Conversion of interleaved data and/or correction of color samples or other data are corrected by recognizing an underlying arrangement or format of different data sets within a data stream and a conversion process applied that causes bleeding between the sets The data sets are, for example, separate channel views of a 3D display, and the corruption occurs, for example, upon up-conversion of color samples that take into account both views together rather than individually. The invention is embodied, for example, as part of a playback device, display, or as a stand alone converter box that corrects the corrupted samples by at least one of substitution, filtering, or interpolation with appropriately selected samples (e.g., neighboring samples of a same view). In one embodiment, the invention comprises a conversion from a received format (e.g., checkerboard) to a delivery format (e.g., native format of a 3D ready display). | 07-08-2010 |
| 20100165872 | Estimating Wireless Processing Device Queue Length and Estimating Signal Reception Quality in a Wireless Network - The present invention may be used to estimate operational characteristics of devices that transmit and receive streams of information in a communication system. In one application, the level of occupancy of a FIFO buffer in a processing device such as a router or wireless access point is estimated by monitoring packets transmitted by the processing device. Estimates of the operational characteristics can be used to control communications in the system so that the overall performance is improved. Techniques that can be used to mitigate effects of low signal-to-noise ratio conditions are also disclosed. | 07-01-2010 |
| 20100150520 | METHOD AND SYSTEM FOR CONTROLLING PLAYBACK OF A VIDEO PROGRAM INCLUDING BY PROVIDING VISUAL FEEDBACK OF PROGRAM CONTENT AT A TARGET TIME - In a class of embodiments, a method for controlling playback of a video program by a media player including by providing visual feedback (referred to as a thumbnail) indicative of content of the program at a target location, a media player configured to perform any embodiment of the method, and a computer readable medium which stores code for implementing any embodiment of the method. Preferably at least one thumbnail is displayed and updated in real-time during playback of the program. Typically each thumbnail is a compressed or reduced-scale version of a frame of the program at, or a representative image of a segment of the program including, the target location. Typically, the thumbnail is an element of a displayed timeline control also including a timeline and an icon, position of the icon along the timeline indicates the target location, and the icon is movable along the timeline in response to user selection of different target locations (typically by asserting commands to the media player using a mouse or other input device). Preferably, data determining each thumbnail are computed prior to playback of the program, and the data and the program are stored prior to playback of the program. | 06-17-2010 |
| 20100121634 | Speech Enhancement in Entertainment Audio - The invention relates to audio signal processing. More specifically, the invention relates to enhancing entertainment audio, such as television audio, to improve the clarity and intelligibility of speech, such as dialog and narrative audio. The invention relates to methods, apparatus for performing such methods, and to software stored on a computer-readable medium for causing a computer to perform such methods. | 05-13-2010 |
| 20100118957 | Video Image Compression Using Unequal Weights - Techniques for video image compression in a video system involve providing a sequence of frames including picture regions, and determining first unequal weights, in which the first unequal weights are used to determine pixel luminance values of a picture region of at least one of the frames. The techniques involve determining second unequal weights, where the second unequal weights are used to determine pixel chroma values of the picture region of at least the one frame. The first unequal weights can include AC weights, and the second unequal weights can include DC weights. A representation of pixel luminance values can differ from a representation of pixel chroma values. The techniques for determining the first unequal weights can involve accessing representative transformations for the pixel luminance values, and the techniques for determining the second unequal weights can involve accessing representative transformations for the pixel chroma values. | 05-13-2010 |
| 20100106507 | Ratio of Speech to Non-Speech Audio such as for Elderly or Hearing-Impaired Listeners - The invention relates to audio signal processing and speech enhancement. In accordance with one aspect, the invention combines a high-quality audio program that is a mix of speech and non-speech audio with a lower-quality copy of the speech components contained in the audio program for the purpose of generating a high-quality audio program with an increased ratio of speech to non-speech audio such as may benefit the elderly, hearing impaired or other listeners. Aspects of the invention are particularly useful for television and home theater sound, although they may be applicable to other audio and sound applications. The invention relates to methods, apparatus for performing such methods, and to software stored on a computer-readable medium for causing a computer to perform such methods. | 04-29-2010 |
| 20100100386 | Noise Variance Estimator for Speech Enhancement - A speech enhancement method operative for devices having limited available memory is described. The method is appropriate for very noisy environments and is capable of estimating the relative strengths of speech and noise components during both the presence as well as the absence of speech. | 04-22-2010 |
| 20100091045 | MULTIPLE MODULATOR DISPLAYS AND RELATED METHODS - A dual modulator display has a first array of pixels that illuminates a second array of pixels with a pattern of light. The second array of pixels modulates the pattern of light to yield an image. A method for determining control values for pixels of the first array of pixels begins with an initial set of control values and refines the control values. The control values may be refined one at a time. Images may be displayed in real time. | 04-15-2010 |
| 20100083344 | TRANSCODING OF AUDIO METADATA - The invention relates to the field of audio encoding. In particular, it relates to the transcoding of audio metadata between different audio coding schemes. It describes a method and a system for transcoding audio gain metadata related to dynamic range control from first gain metadata of a first audio coding scheme to second gain metadata of a second audio coding scheme, wherein the first and second audio coding schemes use coding blocks and wherein each coding block has at least one associated gain value. The method and the system select a gain value of the second gain metadata based on the gain values of the first gain metadata such that within a time interval around the time instance associated with the gain value of the second gain metadata, the minimum gain value of the first gain metadata is selected. | 04-01-2010 |
| 20100076769 | Speech Enhancement Employing a Perceptual Model - Speech enhancement based on a psycho-acoustic model is disclosed that is capable of preserving the fidelity of speech while sufficiently suppressing noise including the processing artifact known as “musical noise”. | 03-25-2010 |
| 20100073769 | METHOD AND SYSTEM FOR SHAPED GLASSES AND VIEWING 3D IMAGES - Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images. | 03-25-2010 |
| 20100067709 | Loudness Measurement with Spectral Modifications - The perceived loudness of an audio signal is measured by modifying a spectral representation of an audio signal as a function of a reference spectral shape so that the spectral representation of the audio signal conforms more closely to the reference spectral shape, and determining the perceived loudness of the modified spectral representation of the audio signal. | 03-18-2010 |
| 20100067693 | SYSTEM AND METHOD OF ENABLING CONTENT OUTPUT ON A DIGITAL DEVICE - In one embodiment the present invention includes a system and method of distributing content. Authorization information is encoded with the content. When received and decoded, if a particular device output is authorized by the authorization information, then the content is output. By encoding the authorization information along with the content, unauthorized display of the content is reduced. | 03-18-2010 |
| 20100067108 | METHOD AND SYSTEM FOR SHAPED GLASSES AND VIEWING 3D IMAGES - Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images. | 03-18-2010 |
| 20100066976 | METHOD AND SYSTEM FOR SHAPED GLASSES AND VIEWING 3D IMAGES - Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images. | 03-18-2010 |
| 20100064305 | SYSTEM AND METHOD OF DETECTING UNAUTHORIZED CONTENT USAGE - In one embodiment the present invention includes a system for identifying an unauthorized display of content. The system includes a preprocessor, an inserter, an observation device, and a subscriber information device. The preprocessor device preprocesses the content for subsequent insertion of semi-visible information. The inserter device inserts a semi-visible watermark into the content as having been preprocessed by the preprocessor device. The semi-visible watermark corresponds to a subscriber identifier. The observation device executes processing, including receiving an input from an observer that observes a display of the content that includes the semi-visible watermark. The input corresponds to the semi visible watermark. The processing further includes processing the input to generate an input result. The subscriber information device stores subscriber identifiers and identifies a particular subscriber by comparing the input result and the subscriber identifiers. | 03-11-2010 |
| 20100064139 | SYSTEM AND METHOD OF EXTENDING MARKING INFORMATION IN CONTENT DISTRIBUTION - In one embodiment the present invention includes a method of generating tracking information for steganographic insertion in content. The method includes splitting a tracking message into submessages, which are then inserted steganographically into the content and later extracted for tracking purposes. In this manner, the amount of information communicated in the tracking messages may be increased without requiring a redesign of every message insertion device in a distribution chain. | 03-11-2010 |
| 20100060857 | SYSTEM FOR 3D IMAGE PROJECTIONS AND VIEWING - Shaped glasses have curved surface lenses with spectrally complementary filters disposed thereon. The filters curved surface lenses are configured to compensate for wavelength shifts occurring due to viewing angles and other sources. Complementary images are projected for viewing through projection filters having passbands that pre-shift to compensate for subsequent wavelength shifts. At least one filter may have more than 3 primary passbands. For example, two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional passbands may be utilized to more closely match a color space and white point of a projector in which the filters are used. The shaped glasses and projection filters together may be utilized as a system for projecting and viewing 3D images. | 03-11-2010 |
| 20100053420 | MULTIPLE EXPOSURE METHODS AND APPARATUS FOR ELECTRONIC CAMERAS - A method for capturing multiple sets of image data with an electronic camera having a shutter and an electronic shutter for selectively allowing light to reach an image sensor comprises opening the shutter and the electronic shutter, allowing light to reach the image sensor for a first exposure time, closing the electronic shutter, reading out pixel data captured during the first exposure time, allowing light to reach the image sensor for a second exposure time, and, reading out pixel data captured during the second exposure time. The method may be used to obtain multiple differently exposed images of a scene for combination into a high dynamic range image. | 03-04-2010 |
| 20100049346 | APPARATUSES AND METHODS FOR USE IN CREATING AN AUDIO SCENE - An audio scene is created for an avatar in a virtual environment of multiple avatars. A link structure is created between the avatars. An audio scene is created for each avatar, based on an avatar's associations with other linked avatars. | 02-25-2010 |
| 20100042407 | HIGH QUALITY TIME-SCALING AND PITCH-SCALING OF AUDIO SIGNALS - In one alternative, an audio signal is analyzed using multiple psychoacoustic criteria to identify a region of the signal in which time scaling and/or pitch shifting processing would be inaudible or minimally audible, and the signal is time scaled and/or pitch shifted within that region. In another alternative, the signal is divided into auditory events, and the signal is time scaled and/or pitch shifted within an auditory event. In a further alternative, the signal is divided into auditory events, and the auditory events are analyzed using a psychoacoustic criterion to identify those auditory events in which the time scaling and/or pitch shifting processing of the signal would be inaudible or minimally audible. Further alternatives provide for multiple channels of audio. | 02-18-2010 |
| 20100014587 | Interpolation of Video Compression Frames - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 01-21-2010 |
| 20100013983 | MULTIPLE EXPOSURE METHODS AND APPARATUS FOR ELECTRONIC CAMERAS - A method for capturing multiple sets of image data with an electronic camera having a shutter and an electronic shutter for selectively allowing light to reach an image sensor comprises opening the shutter and the electronic shutter, allowing light to reach the image sensor for a first exposure time, closing the electronic shutter, reading out pixel data captured during the first exposure time, allowing light to reach the image sensor for a second exposure time, and, reading out pixel data captured during the second exposure time. The method may be used to obtain multiple differently exposed images of a scene for combination into a high dynamic range image. | 01-21-2010 |
| 20100013911 | Dual Projection System With Inversely Synchronized Channel Projections - A dual projection system utilizes a first projector and a second projector to project alternating left and right channel images of a 3D display. The projectors are inversely synchronized such that while the first projector projects a right channel image the other projector projects a left channel image. A projection filter in each projector has left channel properties when the image being projected is a left channel image and right channel properties when the image being projected is a right channel image. The images projected from each projector alternate between left and right channel images approximately once per frame. | 01-21-2010 |
| 20100002026 | CALIBRATION OF DISPLAYS HAVING SPATIALLY-VARIABLE BACKLIGHT - A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. The screen is illuminated with light from an illuminator comprising an array of individually-controllable light sources. The light sources and elements of the light modulator may be controlled to adjust the intensity and frequency of light emanating from corresponding areas on the screen. The display may be calibrated to compensate for differences in intensities of the light sources. | 01-07-2010 |
| 20090322800 | METHOD AND APPARATUS IN VARIOUS EMBODIMENTS FOR HDR IMPLEMENTATION IN DISPLAY DEVICES - An HDR display is a combination of technologies including, for example, a dual modulation architecture incorporating algorithms for artifact reduction, selection of individual components, and a design process for the display and/or pipeline for preserving the visual dynamic range from capture to display of an image or images. In one embodiment, the dual modulation architecture includes a backlight with an array of RGB LEDs and a combination of a heat sink and thermally conductive vias for maintaining a desired operating temperature. | 12-31-2009 |
| 20090316114 | METHOD AND APPARATUS FOR LIGHT RECAPTURE AND SEQUENTIAL CHANNEL ILLUMINATION - A filter wheel having spirally shaped left and right channel 3D filters. The 3D filters are, for example, spectral separation filters. The filter is mounted, for example, close to an integrating rod output of a projector. The left and right channel filtered light scrolls across a modulation device which is energized with correspondingly scrolling left and right image data. In one embodiment, the integrating rod comprises mirrored surfaces to facilitate recycling of light reflected off the filter wheel. The filter wheel may be placed in a single or dual projector configuration. In one embodiment, the filters are fixed at the end of an integrating rod using “re-cycled” light to illuminate different channels of a projection system. | 12-24-2009 |
| 20090304213 | Stereophonic Sound Imaging - A method for reducing phase differences varying with frequency occurring at certain listening positions with respect to loudspeakers reproducing respective ones of multiple sound channels in a listening space, the phase differences occurring in a sequence of frequency bands in which the phase differences alternate between being predominantly in-phase and predominantly out-of-phase, comprises adjusting the phase in multiple frequency bands in which the multiple sound channels are out-of-phase at such listening positions. Such adjustment of phase includes the frequency bands in which the width of comb filtering pass bands and notches resulting from phase differences at such listening positions would be greater than or commensurate with the critical band width if the phase adjustment were not applied. The listening space may be the interior of a vehicle. | 12-10-2009 |
| 20090304190 | Audio Signal Loudness Measurement and Modification in the MDCT Domain - Processing an audio signal represented by the Modified Discrete Cosine Transform (MDCT) of a time-sampled real signal is disclosed in which the loudness of the transformed audio signal is measured, and at least in part in response to the measuring, the loudness of the transformed audio signal is modified. When gain modifying more than one frequency band, the variation or variations in gain from frequency band to frequency band, is smooth. The loudness measurement employs a smoothing time constant commensurate with the integration time of human loudness perception or slower. | 12-10-2009 |
| 20090299756 | Ratio of speech to non-speech audio such as for elderly or hearing-impaired listeners - A hybrid stereophonic/monophonic audio signal encoding comprises generating, in response to a discrete two-channel stereophonic audio signal, an encoded hybrid stereophonic/monophonic audio signal in which the audio signal is a discrete two-channel audio signal below a frequency f | 12-03-2009 |
| 20090290727 | HYBRID DIGITAL/ANALOG LOUDNESS-COMPENSATING VOLUME CONTROL - A loudness-compensating volume control method imposes a desired loudness scaling on an audio signal by processing the audio signal in both the digital and analog domains by receiving a desired loudness scaling, deriving a wideband gain component and one or more other gain components from the desired loudness scaling, applying in the digital domain modifications to the audio signal based on the one or more other gain components to produce a partly-modified audio signal, and applying in the analog domain modifications to the partly-modified audio signal based on the wideband gain component. Additional loudness modifications other than volume control loudness modifications on the audio signal may also be imposed. | 11-26-2009 |
| 20090284547 | HDR DISPLAYS AND CONTROL SYSTEMS THEREFOR - A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range. | 11-19-2009 |
| 20090284459 | Array Scaling for High Dynamic Range Backlight Displays and Other Devices - Luminosity of individual LED light sources is measured and a forward voltage control of each LED is set so that each LED has a pre-determined (e.g., uniform) luminosity at a same modulation level. The LEDs are then driven via a modulation technique such as PWM, PCM, polyphase, etc. according to lighting requirements. The LEDs are, for example, a backlight of a dual modulation HDR LCD display system, and the lighting requirements are local dimming signals for the display. | 11-19-2009 |
| 20090271185 | AUDIO-PEAK LIMITING IN SLOW AND FAST STAGES - A method and apparatus for limiting the absolute magnitude of an audio signal. The method may include firstly variable-gain reducing the gain of an audio signal, and then secondly variable-gain reducing the gain of the audio signal faster than the first variable-gain reduction, thereby limiting the absolute magnitude of the audio signal to a threshold. The first variable-gain reduction may include variable-gain reducing the gain of the audio signal in a first stage, and the second variable-gain reduction may include variable-gain reducing the gain of the audio signal in a second stage that reduces the gain faster than the first stage. The second variable-gain reduction may include delaying the audio signal, finding a peak among the delayed audio signal, calculating a fast gain from a found peak, and modifying the delayed audio signal with the calculated fast gain. | 10-29-2009 |
| 20090252050 | TRANSIENT ANALYSIS OF PACKET QUEUING LOSS IN A BROADCAST NETWORK - A receiver monitoring the transmissions of a packet processing device such as a wireless access point analyzes the monitored transmissions to estimate the probability of packet loss due to buffer overflow in the processing device. The loss probability can be estimated for individual packets to follow rapid changes in communication conditions. An indication of the estimated loss probability can be used to adapt the forward error correction (FEC) parameters that are used to generate the packets, thereby improving the reliability of data delivery to a receiver while optimizing the use of communication channel bandwidth. | 10-08-2009 |
| 20090222272 | Controlling Spatial Audio Coding Parameters as a Function of Auditory Events - An audio encoder or encoding method receives a plurality of input channels and generates one or more audio output channels and one or more parameters describing desired spatial relationships among a plurality of audio channels that may be derived from the one or more audio output channels, by detecting changes in signal characteristics with respect to lime in one or more of the plurality of audio input channels, identifying as auditory event boundaries changes in signal characteristics with respect to lime in the one or more of the plurality of audio input channels, an audio segment between consecutive boundaries constituting an auditory event in the channel or channels, and generating all or some of the one or more parameters al least partly in response to auditory events and/or the degree of change in signal characteristics associated with the auditory event boundaries. An auditory-event-responsive audio upmixer or upmixing method is also disclosed. | 09-03-2009 |
| 20090220109 | Audio Gain Control Using Specific-Loudness-Based Auditory Event Detection - In one disclosed aspect, dynamic gain modifications are applied to an audio signal at least partly in response to auditory events and/or the degree of change in signal characteristics associated with said auditory event boundaries. In another aspect, an audio signal is divided into auditory events by comparing the difference in specific loudness between successive time blocks of the audio signal. | 09-03-2009 |
| 20090208023 | AUDIO CHANNEL SPATIAL TRANSLATION - Using an M:N variable matrix, M audio input signals, each associated with a direction, are translated to N audio output signals, each associated with a direction, wherein N is larger than M, M is two or more and N is a positive integer equal to three or more. The variable matrix is controlled in response to measures of: (1) the relative levels of the input signals, and (2) the cross-correlation of the input signals so that a soundfield generated by the output signals has a compact sound image in the nominal ongoing primary direction of the input signals when the input signals are highly correlated, the image spreading from compact to broad as the correlation decreases and progressively splitting into multiple compact sound images, each in a direction associated with an input signal, as the correlation continues to decrease to highly uncorrelated. | 08-20-2009 |
| 20090208008 | DIGITAL WATERMARKING WITH SPATIOTEMPORAL MASKING - Visually imperceptible distortion, from watermarking or compression, desired for embedding into frames of a video sequence is computed. Within each spatiotemporal region of the frames, points are counted, which have feature information amplitude that at least equals the desired distortion. In each region, a fraction of the points with magnitudes at least equal to desired distortion is determined, in relation to the total number of points and compared to a threshold. Regions with fractions at least equal to the threshold are identified. Visual aspects of features in the identified regions are analyzed for salience related to drawing visual attention. The salience is compared to a threshold. Identified regions that do not exceed the salience threshold may be selected as candidates for hiding the watermark. Spatial and temporal contrast values may relate to the salience, as well as luminance values computed therewith. | 08-20-2009 |
| 20090201320 | TEMPORAL FILTERING OF VIDEO SIGNALS - A process for reducing noise and temporal artifacts (e.g. walking LEDs) on a dual modulation display system by applying temporal filtering to rear modulation signals of a sequence of video frames. Flare and dimming rates are calculated for a current frame in the video. If a flare rate threshold is exceeded, an intensity of the backlight is limited to a predetermined flare rate. If a dimming rate threshold is exceeded, the backlight intensity is limited to a predetermined dimming rate. The limitations are applied, for example, on an element-by-element basis. In the event of a scene change, the limitations do not need to be applied. A forward modulation signal is calculated by taking into account any applied backlight limitations. | 08-13-2009 |
| 20090192806 | Broadband Frequency Translation for High Frequency Regeneration - An audio signal is conveyed more efficiently by transmitting or recording a baseband of the signal with an estimated spectral envelope and a noise-blending parameter derived from a measure of the signal's noise-like quality. The signal is reconstructed by translating spectral components of the baseband signal to frequencies outside the baseband, adjusting phase of the regenerated components to maintain phase coherency, adjusting spectral shape according to the estimated spectral envelope, and adding noise according to the noise-blending parameter. Preferably, the transmitted or recorded signal also includes an estimated temporal envelope that is used to adjust the temporal shape of the reconstructed signal. | 07-30-2009 |
| 20090190237 | RETROREFLECTIVE OPTICAL COLLIMATION LAYER AND DISPLAY DEVICES INCORPORATING SAME - A display comprises a backlight comprising a plurality of individually-controllable light emitters, a light modulator comprising a plurality of individually-controllable elements, and, a retro-reflective optical layer positioned between the backlight and the light modulator. The retro-reflective optical layer is configured to pass light incident thereon at an angle with respect to a normal to the retro-reflective optical layer of less than a threshold angle φ, and reflect light incident thereon at an angle with respect to a normal to the retro-reflective optical layer of greater than φ in a direction opposite and generally parallel to an incoming direction of incident light. | 07-30-2009 |
| 20090144055 | Audio Coding System Using Temporal Shape of a Decoded Signal to Adapt Synthesized Spectral Components - A receiver in an audio coding system receives a signal conveying frequency subband signals representing an audio signal. The subband signals are examined to assess one or more characteristics of the audio signal including temporal shape. Spectral components are synthesized having the one or more assessed characteristics, integrated with the subband signals and passed through a synthesis filterbank to generate an output signal. | 06-04-2009 |
| 20090138267 | Audio Coding System Using Temporal Shape of a Decoded Signal to Adapt Synthesized Spectral Components - A receiver in an audio coding system receives a signal conveying frequency subband signals representing an audio signal. The subband signals are examined to assess one or more characteristics of the audio signal including temporal shape. Spectral components are synthesized having the one or more assessed characteristics, integrated with the subband signals and passed through a synthesis filterbank to generate an output signal. | 05-28-2009 |
| 20090097676 | Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal - Audio signal processing relating to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal is useful, for example, in one or more of: loudness-compensating volume control, automatic gain control, dynamic range control (including, for example, limiters, compressors, expanders, etc.), dynamic equalization, and compensating for background noise interference in an audio playback environment. In various embodiments, modification parameters are derived for modifying the audio signal in order to reduce the difference between its specific loudness and a target specific loudness. | 04-16-2009 |
| 20090087110 | MULTIMEDIA CODING AND DECODING WITH ADDITIONAL INFORMATION CAPABILITY - A multimedia coding and decoding system and method is presented that uses the specific prediction mode to signal supplemental information, e.g., metadata, while considering and providing trade offs between coding performance and metadata capacity. The prediction mode can be encoded according to a mode table that relates mode to bits and by considering coding impact. Start and stop codes can be used to signal the message, while various techniques of how to properly design the mode to bits tables are presented. | 04-02-2009 |
| 20090086816 | Video Compression and Transmission Techniques - Embodiments feature families of rate allocation and rate control methods that utilize advanced processing of past and future frame/field picture statistics and are designed to operate with one or more coding passes. At least two method families include: a family of methods for a rate allocation with picture look-ahead; and a family of methods for average bit rate (ABR) control methods. At least two other methods for each method family are described. For the first family of methods, some methods may involve intra rate control. For the second family of methods, some methods may involve high complexity ABR control and/or low complexity ABR control. These and other embodiments can involve any of the following: spatial coding parameter adaptation, coding prediction, complexity processing, complexity estimation, complexity filtering, bit rate considerations, quality considerations, coding parameter allocation, and/or hierarchical prediction structures, among others. | 04-02-2009 |
