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1. 发明申请

US20060028359A1 Context-based adaptive binary arithmetic coding method and apparatus 有权
公开(公告)号：US20060028359A1
公开(公告)日：2006-02-09
申请号：US11177416
申请日：2005-07-11
申请人： Doohyun Kim , Daesung Cho , Sangio Lee
发明人： Doohyun Kim , Daesung Cho , Sangio Lee
IPC分类号： H03M7/00
CPC分类号： H03M7/4006 , H03M7/40 , H04N19/13 , H04N19/136 , H04N19/176 , H04N19/436 , H04N19/44 , H04N19/61
摘要： There are provided a context-based adaptive binary arithmetic decoding method and apparatus. The context-based adaptive binary arithmetic decoding apparatus includes: a context extractor extracting a plurality of contexts from a storage unit storing contexts each including a state value for probability characteristic; a first ROM table storing current probability information so that a current binary symbol of the bit stream is decoded according to a state value of each context; a second ROM table storing predicted probability information so that a next binary symbol of the bit stream is decoded according to a state value of each context; a general mode arithmetic decoder, which performs pipeline processing, loading current probability information from the first ROM table on the basis of a current state value of a context extracted from the context extractor to decode a first binary symbol, and loading predicted probability information from the second ROM table to decode a next remaining binary symbol while decoding the remaining binary symbols; and a bypass mode arithmetic decoder, including a plurality of calculators for parallel processing, simultaneously decoding a plurality of corresponding binary symbols of the bit stream, to perform arithmetic decoding on the remaining symbols if a predetermined condition is satisfied while the general mode arithmetic decoder performs arithmetic decoding on the corresponding symbols of the bit stream. Therefore, by implementing a hardware suitable for context-based adaptive binary arithmetic decoding, it is possible to enhance a decoding speed.

2. 发明授权

US07079057B2 Context-based adaptive binary arithmetic coding method and apparatus 有权
标题翻译：基于上下文的自适应二进制算术编码方法和装置
公开(公告)号：US07079057B2
公开(公告)日：2006-07-18
申请号：US11177416
申请日：2005-07-11
申请人： Doohyun Kim , Daesung Cho , Sangio Lee
发明人： Doohyun Kim , Daesung Cho , Sangio Lee
IPC分类号： H03M7/00
CPC分类号： H03M7/4006 , H03M7/40 , H04N19/13 , H04N19/136 , H04N19/176 , H04N19/436 , H04N19/44 , H04N19/61
摘要： There are provided a context-based adaptive binary arithmetic decoding method and apparatus. The context-based adaptive binary arithmetic decoding apparatus includes: a context extractor extracting a plurality of contexts from a storage unit storing contexts each including a state value for probability characteristic; a first ROM table storing current probability information so that a current binary symbol of the bit stream is decoded according to a state value of each context; a second ROM table storing predicted probability information so that a next binary symbol of the bit stream is decoded according to a state value of each context; a general mode arithmetic decoder, which performs pipeline processing, loading current probability information from the first ROM table on the basis of a current state value of a context extracted from the context extractor to decode a first binary symbol, and loading predicted probability information from the second ROM table to decode a next remaining binary symbol while decoding the remaining binary symbols; and a bypass mode arithmetic decoder, including a plurality of calculators for parallel processing, simultaneously decoding a plurality of corresponding binary symbols of the bit stream, to perform arithmetic decoding on the remaining symbols if a predetermined condition is satisfied while the general mode arithmetic decoder performs arithmetic decoding on the corresponding symbols of the bit stream. Therefore, by implementing a hardware suitable for context-based adaptive binary arithmetic decoding, it is possible to enhance a decoding speed.
摘要翻译：提供了一种基于上下文的自适应二进制算术解码方法和装置。基于上下文的自适应二进制算术解码装置包括：上下文提取器，从存储单元提取多个上下文，每个上下文包括概率特性的状态值; 存储当前概率信息的第一ROM表，使得根据每个上下文的状态值对比特流的当前二进制符号进行解码; 存储预测概率信息的第二ROM表，使得根据每个上下文的状态值对比特流的下一个二进制符号进行解码; 执行流水线处理的一般模式算术解码器，基于从上下文提取器提取的上下文的当前状态值来从第一ROM表加载当前概率信息，以对第一二进制符号进行解码，并将预测概率信息从第二ROM表，以解码剩余的二进制符号; 以及旁路模式算术解码器，包括用于并行处理的多个计算器，同时解码比特流的多个对应的二进制符号，以便在一般模式算术解码器执行时满足预定条件时对其余符号执行算术解码对比特流的相应符号进行算术解码。因此，通过实现适用于基于上下文的自适应二进制算术解码的硬件，可以提高解码速度。

3. 发明申请

US20070047651A1 Video prediction apparatus and method for multi-format codec and video encoding/decoding apparatus and method using the video prediction apparatus and method 审中-公开
标题翻译：用于多格式编解码器和视频编码/解码装置和方法的视频预测装置和方法使用该视频预测装置和方法
公开(公告)号：US20070047651A1
公开(公告)日：2007-03-01
申请号：US11417141
申请日：2006-05-04
申请人： Hyeyun Kim , Shihwa Lee , Jihun Kim , Jaesung Park , Sangio Lee , Hyeyeon Chung , Doohyun Kim
发明人： Hyeyun Kim , Shihwa Lee , Jihun Kim , Jaesung Park , Sangio Lee , Hyeyeon Chung , Doohyun Kim
IPC分类号： H04N11/02 , H04N11/04 , H04N7/12
CPC分类号： H04N19/40 , H04N19/105 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/85
摘要： Provided are a video prediction apparatus and method for a multi-format codec and a video encoding/decoding apparatus and method using the video prediction apparatus and method. The video prediction apparatus that generates a prediction block based on a motion vector and a reference frame according to a plurality of video compression formats includes an interpolation pre-processing unit and a common interpolation unit. The interpolation pre-processing unit receives video compression format information of a current block to be predicted, and extracts a block of a predetermined size to be used for interpolation from the reference frame and generates interpolation information using the motion vector. The common interpolation unit interpolates a pixel value of the extracted block or a previously interpolated pixel value in an interpolation direction according to the interpolation information to generate the prediction block.
摘要翻译：提供了一种用于多格式编解码器的视频预测装置和方法，以及使用该视频预测装置和方法的视频编码/解码装置和方法。根据多个视频压缩格式，基于运动矢量和参考帧生成预测块的视频预测装置包括内插预处理单元和公共内插单元。内插预处理单元接收要预测的当前块的视频压缩格式信息，并从参考帧中提取用于插值的预定大小的块，并使用运动矢量生成插值信息。公共内插单元根据内插信息内插提取的块的像素值或内插方向上的先前内插像素值，以生成预测块。

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