Patent application number | Description | Published |
20080215605 | Method for Embedding Data - Watermarking schemes are known that embed the watermark directly in the MPEG domain. A requirement for these algorithms is that the watermarked MPEG stream does not increase in size. Therefore, a bit rate controller allows a modification of a DCT coefficient only if such modification does not increase the stream size. It happens frequently that DCT coefficients are skipped because of this requirement. As a direct consequence, the watermark energy is smaller than desired and therefore the watermark is less robust. This invention exploits the fact that stuffing bits have often already been added to the stream by the MPEG encoder. The embedder is arranged to analyse the stream so as to find out how many stuffing bits there are at the end of the slice. The embedder can then embed the watermark immediately at the beginning of a slice. As a direct result, the watermark energy will increase and therefore the watermark will be more robust. | 09-04-2008 |
20080226125 | Method of Embedding Data in an Information Signal - This invention relates to a watermarking scheme that is robust to general distortions such as scaling and rotation of multimedia content (audio, video, images). This is achieved by embedding a watermark in a first component of the host signal and a transformed version of the same watermark in a second component. For example, a watermark is embedded in the luminance component (Y) and a cyclically shifted version thereof in the chrominance component (UV) of a video signal. The detector correlates ( | 09-18-2008 |
20080304702 | Blind Detection for Digital Cinema - The invention relates to embedding in, as well as to extracting a payload from a motion image signal. Furthermore, the invention relates to a motion image signal. A payload is embedded in the motion image signal by the following steps. A first and an at least second watermark are represented by at least a first sequence of watermark samples, and a first and at least a second global property of an image of the signal are determined. Subsequently, the first and the at least second watermark are embedded in the signal, so that a shift of the at least second watermark with respect to the first watermark represents the payload. The first and the at least second watermarks are embedded by modifying the first and the at least second global property in the image in accordance with the corresponding watermark samples. The first and second global properties may be the mean luminance and the mean color saturation of the pixels constituting the image. | 12-11-2008 |
20090192638 | DEVICE FOR AND METHOD OF GENERATING AUDIO DATA FOR TRANSMISSION TO A PLURALITY OF AUDIO REPRODUCTION UNITS | 07-30-2009 |
20100135118 | METHOD OF AND SYSTEM FOR DETERMINING DISTANCES BETWEEN LOUDSPEAKERS - The invention describes a method of determining the distance (d | 06-03-2010 |
20120057720 | AUDIO NOISE CANCELLING - A noise canceling system comprises a microphone ( | 03-08-2012 |
20120163626 | ACTIVE SOUND REDUCTION SYSTEM AND METHOD - The present invention refers to an active sound reduction system and method for attenuation of sound emitted by a primary sound source, especially for attenuation of snoring sounds emitted by a human being. This system comprises a primary sound source, at least one speaker as a secondary sound source for producing an attenuating sound to be superposed with the sound emitted by said primary sound source, a reference microphone for receiving sound from said primary sound source, and at least one error microphone being allocated to each speaker to form a speaker/microphone pair. The at least one error microphone is provided as a directional microphone pointing at its allocated speaker to receive residual sound resulting from the superposition of the sounds from the primary sound source and the corresponding speaker. The error microphone and speaker of at least one speaker/microphone pair and the primary sound source are arranged substantially collinear. A control unit is provided to receive an output reference signal of the reference microphone representing the sound received by the reference microphone and an output error signal of the at least one error microphone representing the sound received by the at least one error microphone and to calculate a control signal for the speaker from the output reference signal and the output error signal. | 06-28-2012 |
20120186271 | NOISE REDUCTION FOR AN ACOUSTIC COOLING SYSTEM - The present invention relates to an acoustic cooling system ( | 07-26-2012 |
20120195473 | METHOD AND SYSTEM FOR PROCESSING A SIGNAL INCLUDING AT LEAST A COMPONENT REPRESENTATIVE OF A PERIODIC PHENOMENON IN A LIVING BEING - A method of processing a signal including at least a component representative of a periodic phenomenon in a living being includes obtaining at least one first signal having at least a component representative of a periodic phenomenon in a living being. Separate data representative of at least a periodic component of motion of the living being are obtained by obtaining a sequence of images showing the living being, synchronized with the at least one first signal, and carrying out video-based motion analysis of the sequence of images. The data are used at least to suppress a component of the first signal corresponding to the periodic component of motion of the living being. | 08-02-2012 |
20120195486 | METHOD AND SYSTEM FOR OBTAINING A FIRST SIGNAL FOR ANALYSIS TO CHARACTERIZE AT LEAST ONE PERIODIC COMPONENT THEREOF - A method of facilitating obtaining a first signal ( | 08-02-2012 |
20130271591 | DEVICE AND METHOD FOR EXTRACTING INFORMATION FROM CHARACTERISTIC SIGNALS - The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream ( | 10-17-2013 |
20130272393 | VIDEO CODING AND DECODING DEVICES AND METHODS PRESERVING PPG RELEVANT INFORMATION - The present invention relates to a video encoding device ( | 10-17-2013 |
20130294505 | VIDEO CODING AND DECODING DEVICES AND METHODS PRESERVING - The present invention relates to a video encoding device ( | 11-07-2013 |
20140153800 | METHOD AND SYSTEM FOR OBTAINING A FIRST SIGNAL FOR ANALYSIS TO CHARACTERIZE AT LEAST ONE PERIODIC COMPONENT THEREOF - A method of facilitating obtaining a first signal, for analysis to characterize at least one periodic component, includes obtaining two second signals representative of intensities of electromagnetic radiation. The first signal is at least derivable from an output signal obtainable by applying a transformation to the second signals such that any value of the output signal is based on values from each respective second signal at corresponding points in time. The method further includes obtaining a value of a variable determining influences of components of respective second signals on the output signal when the signals corresponding to the second signals are captured and the transformation is applied, by (i) analyzing the first, second and/or the output signals to select a value of a parameter corresponding to a respective one of the variables; or (ii) calculating values of at least one time-varying factor corresponding to a respective one of the variables. | 06-05-2014 |
20140213861 | DISTORTION REDUCED SIGNAL DETECTION - The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream ( | 07-31-2014 |
20150104088 | METHOD AND SYSTEM FOR OBTAINING A FIRST SIGNAL FOR ANALYSIS TO CHARACTERIZE AT LEAST ONE PERIODIC COMPONENT THEREOF - A method of facilitating obtaining a first signal, for analysis to characterize at least one periodic component, includes obtaining two second signals representative of intensities of electromagnetic radiation. The first signal is at least derivable from an output signal obtainable by applying a transformation to the second signals such that any value of the output signal is based on values from each respective second signal at corresponding points in time. The method further includes obtaining a value of a variable determining influences of components of respective second signals on the output signal when the signals corresponding to the second signals are captured and the transformation is applied, by (i) analyzing the first, second and/or the output signals to select a value of a parameter corresponding to a respective one of the variables; or (ii) calculating values of at least one time-varying factor corresponding to a respective one of the variables. | 04-16-2015 |