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公开(公告)号：US20240292010A1
公开(公告)日：2024-08-29
申请号：US18597342
申请日：2024-03-06
IPC分类号： H04N19/44 , H03M7/30 , H03M7/40 , H04N19/13 , H04N19/167 , H04N19/174 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/91
CPC分类号： H04N19/44 , H03M7/3071 , H04N19/13 , H04N19/167 , H04N19/174 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/91 , H03M7/4037
摘要： The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively.
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公开(公告)号：US20240155141A1
公开(公告)日：2024-05-09
申请号：US18411715
申请日：2024-01-12
发明人： Thomas SCHIERL , Valeri GEORGE , Anastasia HENKEL , Detlev MARPE , Karsten GRÜNEBERG , Robert SKUPIN
IPC分类号： H04N19/169 , H04N19/13 , H04N19/174 , H04N19/436 , H04N19/46 , H04N19/463 , H04N19/70 , H04N19/91
CPC分类号： H04N19/188 , H04N19/13 , H04N19/174 , H04N19/436 , H04N19/46 , H04N19/463 , H04N19/70 , H04N19/91 , H04N19/593
摘要： The handling of scalable data streams by network entities is rendered less complex by, in the data stream, accompanying packets which actually carry data by packets of a different packet type which have a scalability axes descriptor defining the number of scalability axes and a semantic meaning thereof. In another aspect, the handling of scalable data streams by network entities is rendered more efficient by conveying level and/or profile descriptors using packets other than the data carrying packets, with profile and/or level descriptors being divided up into a first set explicitly signaling the definition of the available coding option set and/or available syntax element value range for a respective operation point, and a second set of profile and/or level descriptors which signal the definition of the available coding option set and/or available syntax element value range for their respective operation points by reference another profile and/or level descriptor.
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公开(公告)号：US20230188719A1
公开(公告)日：2023-06-15
申请号：US18053219
申请日：2022-11-07
发明人： Valeri GEORGE , Benjamin BROSS , Heiner KIRCHHODDER , Detlev MARPE , Tung NGUYEN , Matthias PRIESS , Mischa SIEKMANN , Jan STEGEMANN , Thomas WIEGAND
IPC分类号： H04N19/13 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H03M7/42 , H04N19/52 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
CPC分类号： H04N19/13 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H03M7/42 , H04N19/52 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
摘要： An entropy decoder is configured to, for horizontal and vertical components of motion vector differences, derive a truncated unary code from the data stream using context-adaptive binary entropy decoding with exactly one context per bin position of the truncated unary code, which is common for horizontal and vertical components of the motion vector differences, and an Exp-Golomb code using a constant equi-probability bypass mode to obtain the binarizations of the motion vector differences. A desymbolizer is configured to debinarize the binarizations of the motion vector difference syntax elements to obtain integer values of the horizontal and vertical components of the motion vector differences. A reconstructor is configured to reconstruct a video based on the integer values of the horizontal and vertical components of the motion vector differences.
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公开(公告)号：US20230179786A1
公开(公告)日：2023-06-08
申请号：US18160689
申请日：2023-01-27
IPC分类号： H04N19/44 , H03M7/30 , H04N19/13 , H04N19/167 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/91 , H04N19/174
CPC分类号： H04N19/44 , H03M7/3071 , H04N19/13 , H04N19/167 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/91 , H04N19/174 , H03M7/4037
摘要： The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively.
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公开(公告)号：US20220224904A1
公开(公告)日：2022-07-14
申请号：US17590596
申请日：2022-02-01
发明人： Valeri GEORGE , Benjamin BROSS , Heiner KIRCHHOFFER , Detlev MARPE , Tung NGUYEN , Matthias PREISS , Mischa SIEKMANN , Jan STEGEMANN , Thomas WIEGAND , Christian BARTNIK
IPC分类号： H04N19/13 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H03M7/42 , H04N19/52 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
摘要： A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.
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公开(公告)号：US20200236378A1
公开(公告)日：2020-07-23
申请号：US16840043
申请日：2020-04-03
IPC分类号： H04N19/44 , H04N19/51 , H04N19/174 , H04N19/167 , H04N19/436 , H04N19/91 , H04N19/503 , H04N19/13 , H03M7/30
摘要： The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively.
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公开(公告)号：US20200021830A1
公开(公告)日：2020-01-16
申请号：US16578716
申请日：2019-09-23
IPC分类号： H04N19/44 , H04N19/51 , H04N19/174 , H04N19/167 , H04N19/436 , H04N19/91 , H04N19/503 , H04N19/13 , H03M7/30
摘要： The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively.
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公开(公告)号：US20190327474A1
公开(公告)日：2019-10-24
申请号：US16454247
申请日：2019-06-27
发明人： Valeri GEORGE , Benjamin BROSS , Heiner KIRCHHOFFER , Detlev MARPE , Tung NGUYEN , Matthias PREISS , Mischa SIEKMANN , Jan STEGEMANN , Thomas WIEGAND , Christian BARTNIK
IPC分类号： H04N19/13 , H04N19/174 , H04N19/61 , H04N19/91 , H04N19/513 , H04N19/52 , H04N19/124 , H04N19/184 , H04N19/50 , H04N19/132 , H03M7/42 , H04N19/70
摘要： A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.
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19.发明申请公开(公告)号：US20190306537A1
公开(公告)日：2019-10-03
申请号：US16415020
申请日：2019-05-17
发明人： Thomas SCHIERL , Valeri GEORGE , Karsten GRUENEBERG , Heiner KIRCHHOFFER , Anastasia HENKEL , Detlev MARPE
IPC分类号： H04N19/91 , H04N19/107 , H04N19/436 , H04N19/169
摘要： A raw byte sequence payload describing a picture in slices, WPP substreams or tiles and coded using context-adaptive binary arithmetic coding is subdivided into tranches with continuing the context-adaptive binary arithmetic coding probability adaptation across tranche boundaries. Thereby, tranche boundaries additionally introduced within slices, WPP substreams or tiles do not lead to a reduction in the entropy coding efficiency of these entities. However, the tranches are smaller than the original slices, WPP substreams or tiles and accordingly they may be transmitted with a lower delay, than the un-chopped original entities. According to another aspect combinable with the first aspect, substream marker NAL units are used within a sequence of NAL units of a video bitstream to enable a transport demultiplexer to assign data of slices within NAL units to the corresponding substreams or tiles to be able to, in parallel, serve a multi-threaded decoder with the corresponding substreams or tiles.
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20.发明申请公开(公告)号：US20190124364A1
公开(公告)日：2019-04-25
申请号：US16222116
申请日：2018-12-17
发明人： Thomas SCHIERL , Valeri GEORGE , Karsten GRUENEBERG , Heiner KIRCHHOFFER , Anastasia HENKEL , Detlev MARPE
IPC分类号： H04N19/91 , H04N19/107 , H04N19/436 , H04N19/169
摘要： A raw byte sequence payload describing a picture in slices, WPP substreams or tiles and coded using context-adaptive binary arithmetic coding is subdivided into tranches with continuing the context-adaptive binary arithmetic coding probability adaptation across tranche boundaries. Thereby, tranche boundaries introduced within slices, WPP substreams or tiles do not lead to a reduction in the entropy coding efficiency of these entities. However, the tranches are smaller than the original slices, WPP substreams or tiles and accordingly they may be transmitted with a lower delay, than the un-chopped original entities. According to another aspect combinable with the first aspect, substream marker NAL units are used within a sequence of NAL units of a video bitstream to enable a transport demultiplexer to assign data of slices within NAL units to the corresponding substreams or tiles to be able to, in parallel, serve a multi-threaded decoder with the corresponding substreams or tiles.
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