MAGNUM SEMICONDUCTOR, INC.
|MAGNUM SEMICONDUCTOR, INC. Patent applications|
|Patent application number||Title||Published|
|20140269933||VIDEO SYNCHRONIZATION TECHNIQUES USING PROJECTION - Examples of video synchronization techniques are described. Example synchronization techniques may utilize projection on convex spaces (POCS). The use of POCS may reduce complexity and may speed up synchronization in some examples. Projection on convex spaces generally involves projection (e.g. through summation, averaging, and/or quantization) of samples corresponding to a certain domain or dimension onto a particular axis or space. Weighted projection (e.g. averaging and/or summation) may also be used.||09-18-2014|
|20140269902||APPARATUSES AND METHODS FOR PROVIDING QUANTIZED COEFFICIENTS FOR VIDEO ENCODING - Apparatuses and methods for optimizing rate-distortion costs in a signal are disclosed herein. An apparatus may comprise a quantization block that may be configured to serially receive a plurality of coefficients and to generate a plurality of candidates for each of a plurality of coefficients. The quantization block may further be configured to generate a respective arc for each of the candidates having a respective rate and in accordance with the MPEG-2 coding standard. The quantization block may further be configured to identify which of the plurality of arcs has a minimum cost and provide a modified plurality of coefficients associated with the minimum cost arc.||09-18-2014|
|20140269901||METHOD AND APPARATUS FOR PERCEPTUAL MACROBLOCK QUANTIZATION PARAMETER DECISION TO IMPROVE SUBJECTIVE VISUAL QUALITY OF A VIDEO SIGNAL - Examples of methods and apparatuses for improving subjective video quality of a video signal are described herein. An example apparatus may include an encoder. The encoder may be configured to receive a video signal and to generate a saliency score for a macroblock of the video signal. The encoder may further be configured to adjust a quantization parameter for the macroblock of the video signal based, at least in part, on the respective saliency score for the macroblock of the video signal.||09-18-2014|
|20140219331||APPARATUSES AND METHODS FOR PERFORMING JOINT RATE-DISTORTION OPTIMIZATION OF PREDICTION MODE - Examples of apparatuses and methods for performing a joint RD optimization operation are described herein. A method may include successively encoding a macroblock using a plurality of coding modes. The method may further include determining a corresponding rate-distortion cost to encode the macroblock based on a corresponding coding mode of the plurality of coding modes. The method may further include determining a corresponding estimated rate-distortion cost to encode one or more macroblocks affected by encoding the macroblock using the corresponding coding mode. The method may further include selecting a coding mode of the plurality of coding modes having a lowest corresponding joint rate-distortion cost. The corresponding total rate-distortion cost comprises the corresponding rate-distortion cost to encode the macroblock and the corresponding estimated rate-distortion cost to encode the one or more of the affected macroblocks.||08-07-2014|
|20140185693||METHODS AND APPARATUSES FOR ADAPTIVELY FILTERING VIDEO SIGNALS - Methods and apparatuses for adaptively filtering video content are disclosed herein. An apparatus may include a filter configured to receive a video signal. The filter may further be configured to perform an up-conversion on a plurality of frames of the video signal to provide a plurality of up-converted frames. The filter may further be configured to filter the plurality of up-converted frames to provide a plurality of filtered frames and to perform a down-conversion operation on the plurality of filtered frames to provide a filtered video signal.||07-03-2014|
|20140119454||RATE-DISTORTION OPTIMIZERS AND OPTIMIZATION TECHNIQUES INCLUDING JOINT OPTIMIZATION OF MULTIPLE COLOR COMPONENTS - Examples of encoders and video encoding are described that include optimizers and techniques for optimizing syntax elements such as transform coefficients. In some examples, multiple color components of a video signal may be jointly optimized by employing a cost calculation using a combination of distortion and/or rate metrics for multiple color components. In some examples, a color transformation may occur and the optimization may take place in a different color domain than encoding. In some examples, distortion metrics used in the cost calculations performed by optimizers are based on structural similarity index.||05-01-2014|
|20140086314||APPARATUSES AND METHODS FOR OPTIMIZING RATE-DISTORTION OF SYNTAX ELEMENTS - Methods and apparatuses for optimizing rate-distortion of syntax elements are disclosed herein. An optimization block may be used in a video encoder and may include a candidate generation block and a best cost block. The optimization block may be configured to generate a plurality of candidates corresponding to respective differential levels. Each of the plurality of candidates may be based, at least in part, on a DC coefficient and provide a respective rate-distortion cost. The best cost block may be coupled to the candidate generation block and may be configured to select a candidate of the plurality of candidates according to a criteria.||03-27-2014|
|20130322466||TRANSPORT STREAM MULTIPLEXERS AND METHODS FOR PROVIDING PACKETS ON A TRANSPORT STREAM - Examples described include transport stream multiplexers that may not need to search for an appropriate source to use to generate a transport stream packet. Instead, the source to use may be indicated by a position (e.g. an entry) in a memory table, e.g. a metadata array. Methods for placing transport stream packets on a transport stream and initializing the metadata array are also described.||12-05-2013|
|20130301699||APPARATUSES AND METHODS FOR ESTIMATING BITSTREAM BIT COUNTS - Examples of methods and apparatuses for estimating bit counts of a bitstream are described herein. An entropy encoder may include a bitstream encoding module and a bit count estimation module. The bitstream encoding module may be configured to encode a plurality of syntax elements according to a first encoding technique. The bit count estimation module may be configured to provide estimated bit counts for encoding the plurality of syntax elements according to a second encoding technique. In at least one embodiment, the bitstream encoding module may be further configured to encode the plurality of syntax elements based on the estimated bit counts.||11-14-2013|
|20130279597||APPARATUSES AND METHODS FOR BITSTREAM BITSTUFFING - Examples of methods and apparatuses for inserting and removing stuffing data in a bitstream described. An encoding system may include an encoder configured to receive a video signal and stuffing data. The encoder may be configured encode the video signal in accordance with an encoding methodology and provide a bitstream based on the encoded video signal and the stuffing data. The stuffing data may include random and/or encrypted data. A decoder may receive a bitstream and remove stuffing data from the bitstream. The decoder may include a padding removal apparatus that may include a slice detection block and a bitstream editor. The slice detection block may be configured to determine locations of stuffing data in a bitstream and provide the locations to the bitstream editor using control signals. The bitstream editor may be configured to remove the stuffing data based on the control signals.||10-24-2013|
|20130259119||APPARATUSES AND METHODS FOR PROVIDING QUANTIZED COEFFICIENTS FOR VIDEO ENCODING - Apparatuses and methods for optimizing rate-distortion costs in a signal are disclosed. An apparatus may comprise a quantization block that may be configured to generate a plurality of candidates for each of a plurality of coefficients. The quantization block may further generate a respective plurality of arcs based, at least in part, on the plurality of candidates. The quantization block may be configured to determine which of the plurality of arcs has a lowest cost using a trellis optimization technique. Fractional bit estimations may be used to calculate rate, and inverse lambda may be used to calculate candidate coefficients.||10-03-2013|
|20130188686||METHODS AND APPARATUSES FOR PROVIDING AN ADAPTIVE REDUCED RESOLUTION UPDATE MODE - Methods and apparatuses for applying adaptive reduced resolution update (RRU) processing are disclosed herein. An apparatus may include an encoder configured to receive a video signal and selectively downsample a first component of the video signal in accordance with a first RRU coding mode and a second component of the video signal in accordance with a second RRU coding mode, based on respective types of the first and second components of the video signal. An apparatus may include a decoder configured to receive an encoded bitstream and provide a recovered residual based on the encoded bitstream. The decoder may be configured to selectively upsample a first component of the recovered residual in accordance with a first RRU mode and to selectively upsample a second component of the recovered residual in accordance with a second RRU mode to provide a reconstructed signal based on signaling mechanisms of the encoded bitstream.||07-25-2013|
Patent applications by MAGNUM SEMICONDUCTOR, INC.