公开(公告)号：EP1929784A1

公开(公告)日：2008-06-11

申请号：EP06804241.5

申请日：2006-09-27

申请人： QUALCOMM Incorporated

发明人： RAVEENDRAN, Vijayalakshmi, R. ,  WALKER, Gordon, Kent ,  TIAN, Tao ,  BHAMIDIPATI, Phanikumar ,  SHI, Fang ,  CHEN, Peisong ,  SUBRAMANIA, Sitaraman, Ganapathy ,  OGUZ, Seyfullah, Halit

IPC分类号： H04N7/26

CPC分类号： H04N19/40 ,  H04N5/144 ,  H04N5/147 ,  H04N5/21 ,  H04N7/0115 ,  H04N7/012 ,  H04N19/107 ,  H04N19/114 ,  H04N19/115 ,  H04N19/132 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/147 ,  H04N19/149 ,  H04N19/154 ,  H04N19/159 ,  H04N19/172 ,  H04N19/18 ,  H04N19/187 ,  H04N19/194 ,  H04N19/30 ,  H04N19/36 ,  H04N19/577 ,  H04N19/61 ,  H04N19/65 ,  H04N19/86 ,  H04N19/87 ,  H04N19/89 ,  H04N21/234309 ,  H04N21/2353 ,  H04N21/2389

摘要： Apparatus and methods of using content information for encoding multimedia data are described. A method of processing multimedia data includes receiving multimedia data, and encoding the multimedia data into a first data group and a second data group based on content of the multimedia data, the first data group being configured to be independently decodable from the second data group, and wherein the first and second data groups are encoded at different quality levels. The method can also include classifying the content of the multimedia data and encoding the multimedia data based on the content classification.

公开(公告)号：EP2156672A1

公开(公告)日：2010-02-24

申请号：EP07761930.2

申请日：2007-05-04

申请人： QUALCOMM Incorporated

发明人： SUBRAMANIA, Sitaraman, Ganapathy ,  SHI, Fang ,  CHEN, Peisong ,  OGUZ, Seyfullah, Halit ,  SWAZEY, Scott, T. ,  KAUSHIK, Vinod

IPC分类号： H04N7/26 ,  H04N7/50

CPC分类号： H04N19/19 ,  H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/147 ,  H04N19/149 ,  H04N19/176 ,  H04N19/61

摘要： This disclosure describes techniques for coding mode selection using estimated coding costs. To provide high compression efficiency, for example, an encoding device may attempt to select a coding mode for coding blocks of pixels that codes the data of the blocks with high efficiency. To this end, the encoding device may perform coding mode selection based on estimates of coding cost for at least a portion of the possible modes. In accordance with the techniques described herein, the encoding device estimates the coding cost for the different modes without actually coding the blocks. In fact, in some aspects, the encoding module device may estimate the coding cost for the modes without quantizing the data of the block for each mode. In this manner, the coding cost estimation techniques of this disclosure reduce the amount of computationally intensive calculations needed to perform effective mode selection.

公开(公告)号：EP1929784B1

公开(公告)日：2011-09-14

申请号：EP06804241.5

申请日：2006-09-27

申请人： QUALCOMM Incorporated

发明人： RAVEENDRAN, Vijayalakshmi, R. ,  WALKER, Gordon, Kent Qualcomm Incorporated ,  TIAN, Tao ,  BHAMIDIPATI, Phanikumar Qualcomm Incorporated ,  SHI, Fang ,  CHEN, Peisong ,  SUBRAMANIA, Sitaraman, Ganapathy ,  OGUZ, Seyfullah, Halit

IPC分类号： H04N7/26

CPC分类号： H04N19/40 ,  H04N5/144 ,  H04N5/147 ,  H04N5/21 ,  H04N7/0115 ,  H04N7/012 ,  H04N19/107 ,  H04N19/114 ,  H04N19/115 ,  H04N19/132 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/147 ,  H04N19/149 ,  H04N19/154 ,  H04N19/159 ,  H04N19/172 ,  H04N19/18 ,  H04N19/187 ,  H04N19/194 ,  H04N19/30 ,  H04N19/36 ,  H04N19/577 ,  H04N19/61 ,  H04N19/65 ,  H04N19/86 ,  H04N19/87 ,  H04N19/89 ,  H04N21/234309 ,  H04N21/2353 ,  H04N21/2389

摘要： Apparatus and methods of using content information for encoding multimedia data are described. A method of processing multimedia data includes receiving multimedia data, and encoding the multimedia data into a first data group and a second data group based on content of the multimedia data, the first data group being configured to be independently decodable from the second data group, and wherein the first and second data groups are encoded at different quality levels. The method can also include classifying the content of the multimedia data and encoding the multimedia data based on the content classification.

公开(公告)号：EP1994757A2

公开(公告)日：2008-11-26

申请号：EP07717327.6

申请日：2007-01-19

申请人： QUALCOMM Incorporated

发明人： SUBRAMANIA, Sitaraman, Ganapathy ,  WALKER, Gordon, Kent ,  RAVEENDRAN, Vijayalakshmi, R.

IPC分类号： H04N7/26

CPC分类号： H04N19/00939 ,  H04N19/103 ,  H04N19/107 ,  H04N19/134 ,  H04N19/137 ,  H04N19/149 ,  H04N19/154 ,  H04N19/166 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/895 ,  H04N21/6131

摘要： Methods and apparatuses to encode multimedia data enabling, among others, for example, improved decoded video quality, improved error recovery capabilities and/or improved decoding efficiency are described. A method according to the application includes one or more of the following: initializing a pixel-level reference counter for a current frame, performing a prediction of a next frame referring to the current frame, incrementing the pixel-level reference counter for each pixel of the current frame that is referenced during the prediction of the next frame, readjusting a macroblock bandwidth map of the current frame, repeating the steps of initializing, performing and readjusting for each next frame in a plurality of next frames referring to the current frame, and encoding the current frame based at least in part on the readjusted macroblock bandwidth map of the current frame.

公开(公告)号：EP1994757B1

公开(公告)日：2016-03-09

申请号：EP07717327.6

申请日：2007-01-19

申请人： QUALCOMM Incorporated

发明人： SUBRAMANIA, Sitaraman, Ganapathy ,  WALKER, Gordon, Kent ,  RAVEENDRAN, Vijayalakshmi, R.

IPC分类号： H04N19/176 ,  H04N19/149 ,  H04N19/134 ,  H04N21/61 ,  H04N19/103 ,  H04N19/107 ,  H04N19/61 ,  H04N19/137 ,  H04N19/154 ,  H04N19/166 ,  H04N19/182 ,  H04N19/895

CPC分类号： H04N19/00939 ,  H04N19/103 ,  H04N19/107 ,  H04N19/134 ,  H04N19/137 ,  H04N19/149 ,  H04N19/154 ,  H04N19/166 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/895 ,  H04N21/6131

公开(公告)号：EP1938621A2

公开(公告)日：2008-07-02

申请号：EP06815755.1

申请日：2006-09-27

申请人： Qualcomm Incorporated

发明人： RAVEENDRAN, Vijayalakshmi, R. ,  WALKER, Gordon, Kent ,  TIAN, Tao ,  BHAMIDIPATI, Phanikumar ,  SHI, Fang ,  CHEN, Peisong ,  SUBRAMANIA, Sitaraman, Ganapathy ,  OGUZ, Seyfullah, Halit

IPC分类号： H04N7/50

CPC分类号： H04N19/40 ,  H04N5/144 ,  H04N5/147 ,  H04N5/21 ,  H04N7/0115 ,  H04N7/012 ,  H04N19/107 ,  H04N19/114 ,  H04N19/115 ,  H04N19/132 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/147 ,  H04N19/149 ,  H04N19/154 ,  H04N19/159 ,  H04N19/172 ,  H04N19/18 ,  H04N19/187 ,  H04N19/194 ,  H04N19/30 ,  H04N19/36 ,  H04N19/577 ,  H04N19/61 ,  H04N19/65 ,  H04N19/86 ,  H04N19/87 ,  H04N19/89 ,  H04N21/234309 ,  H04N21/2353 ,  H04N21/2389

摘要： Apparatus and methods of using content information for encoding multimedia data are described. A method of processing multimedia data includes obtaining content information of multimedia data, and encoding the multimedia data so as to align a data boundary with a frame boundary in a time domain, wherein said encoding is based on the content information. In another aspect, a method of processing multimedia data includes obtaining a content classification of the multimedia data, and encoding blocks in the multimedia data as intra-coded blocks or inter-coded blocks based on the content classification to increase the error resilience of the encoded multimedia data. Apparatus that can process multimedia data described in these methods are also disclosed.

公开(公告)号：EP1932362A1

公开(公告)日：2008-06-18

申请号：EP06815754.4

申请日：2006-09-27

申请人： Qualcomm Incorporated

发明人： RAVEENDRAN, Vijayalakshmi, R. ,  WALKER, Gordon, Kent ,  TIAN, Tao ,  BHAMIDIPATI, Phanikumar ,  SHI, Fang ,  CHEN, Peisong ,  SUBRAMANIA, Sitaraman, Ganapathy ,  OGUZ, Seyfullah, Halit

IPC分类号： H04N7/26 ,  H04N7/50

CPC分类号： H04N19/40 ,  H04N5/144 ,  H04N5/147 ,  H04N5/21 ,  H04N7/0115 ,  H04N7/012 ,  H04N19/107 ,  H04N19/114 ,  H04N19/115 ,  H04N19/132 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/147 ,  H04N19/149 ,  H04N19/154 ,  H04N19/159 ,  H04N19/172 ,  H04N19/18 ,  H04N19/187 ,  H04N19/194 ,  H04N19/30 ,  H04N19/36 ,  H04N19/577 ,  H04N19/61 ,  H04N19/65 ,  H04N19/86 ,  H04N19/87 ,  H04N19/89 ,  H04N21/234309 ,  H04N21/2353 ,  H04N21/2389

摘要： Apparatus and methods of using content information for encoding multimedia data are described. A method of processing multimedia data includes A method of processing multimedia data, including obtaining content information of multimedia data, and encoding the multimedia data to form an encoded bitstream, said encoding comprising inserting at least one redundant block of intra-coded data into the encoded bitstream based on the content information. In some aspects, the encoding comprises encoding the multimedia data into a base layer and an enhancement layer, and wherein the intra-coded data is encoded using the quantization parameter for the base layer. In other aspects, the intra-coded data is encoded using the quantization parameter for the enhancement layer.