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1. 发明授权

US07450774B2 Method of changing bit rate by changing codeword of compressed image bit stream 失效
标题翻译：通过改变压缩图像比特流的码字来改变比特率的方法
公开(公告)号：US07450774B2
公开(公告)日：2008-11-11
申请号：US10126981
申请日：2002-04-22
申请人： Cheul-hee Hahm , Jae Moon Jo
发明人： Cheul-hee Hahm , Jae Moon Jo
IPC分类号： G06K9/00 , G06K9/36 , G06K9/46 , H04N1/41 , H04N1/413
CPC分类号： H04N5/9264 , H04N19/152 , H04N19/18 , H04N19/40 , H04N19/48 , H04N19/61 , H04N19/91
摘要： An apparatus and a method of changing a bit rate of a compressed image bit stream by changing a codeword so as to easily change the bit rate and reduce a changing loss. The apparatus for changing a bit rate, in which an input bit stream generated by an image compression encoding method is changed into an output bit stream having a desired bit rate, includes a changing codeword determiner which selects codewords to replace the codewords of the input bit stream, and a codeword changer which changes the codewords of the input bit stream into the codewords selected by the changing codeword determiner. The method and the apparatus can be applied to image services provided through the Internet and receiving apparatuses supporting the Personal Video Recorder (PVR) function. Particularly, the method of changing the bit rate of a compressed image bit stream changes the codewords of input transform coefficients so as to easily change the bit rate and reduce the changing loss.
摘要翻译：通过改变码字来改变压缩图像比特流的比特率以便容易地改变比特率并减少变化的损耗的装置和方法。用于改变比特率的装置，其中通过图像压缩编码方法生成的输入比特流被改变为具有期望比特率的输出比特流，包括改变码字确定器，其选择码字来替换输入比特的码字流和码字改变器，其将输入比特流的码字改变为由改变的码字确定器选择的码字。该方法和装置可以应用于通过互联网提供的图像服务和支持个人录像机（PVR）功能的接收装置。特别地，改变压缩图像比特流的比特率的方法改变输入变换系数的码字，以便容易地改变比特率并减少变化的损耗。

2. 再颁专利

USRE41124E1 Adaptive variable-length coding and decoding methods for image data 失效
公开(公告)号：USRE41124E1
公开(公告)日：2010-02-16
申请号：US11017698
申请日：1994-12-16
申请人： Jae Moon Jo , Jechang Jeong
发明人： Jae Moon Jo , Jechang Jeong
IPC分类号： G06K9/36 , G06K9/46 , G09B20/014
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.

3. 再颁专利

USRE40909E1 Adaptive variable-length coding and decoding methods for image data 失效
公开(公告)号：USRE40909E1
公开(公告)日：2009-09-08
申请号：US11416312
申请日：1994-12-16
申请人： Jae Moon Jo , Jechang Jeong
发明人： Jae Moon Jo , Jechang Jeong
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.

4. 再颁专利

USRE40981E1 Adaptive variable-length coding and decoding methods for image data 失效
标题翻译：图像数据的自适应可变长度编码和解码方法
公开(公告)号：USRE40981E1
公开(公告)日：2009-11-17
申请号：US11416183
申请日：1994-12-16
申请人： Jae Moon Jo , Je-Chang Jeong
发明人： Jae Moon Jo , Je-Chang Jeong
IPC分类号： G06K9/46 , G09B20/014
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.
摘要翻译：自适应可变长度编码/解码方法根据帧内模式/帧间模式条件，量化步长和当前曲折扫描位置执行最佳可变长度编码和解码，使得具有不同的多个可变长度编码表设定根据运行状态数据的统计特性的规则区域和逃逸区域的图案。根据模式，量化步长和扫描位置选择可变长度编码表之一，并且根据所选择的可变长度编码表的正交变换系数是可变长度编码的。

5. 再颁专利

USRE40783E1 Adaptive variable-length coding and decoding methods for image data 失效
公开(公告)号：USRE40783E1
公开(公告)日：2009-06-23
申请号：US11738419
申请日：1994-12-16
申请人： Jae Moon Jo , Jechang Jeong
发明人： Jae Moon Jo , Jechang Jeong
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.

6. 再颁专利

USRE41026E1 Adaptive variable-length coding and decoding methods for image data 失效
公开(公告)号：USRE41026E1
公开(公告)日：2009-12-01
申请号：US11017697
申请日：1994-12-16
申请人： Jae Moon Jo , Je-Chang Jeong
发明人： Jae Moon Jo , Je-Chang Jeong
IPC分类号： G06K9/46 , G09B20/014
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.

7. 再颁专利

USRE40980E1 Adaptive variable-length coding and decoding methods for image data 失效
公开(公告)号：USRE40980E1
公开(公告)日：2009-11-17
申请号：US09654939
申请日：1994-12-16
申请人： Jae Moon Jo , JeChang Jeong
发明人： Jae Moon Jo , JeChang Jeong
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.

8. 再颁专利

USRE40782E1 Adaptive variable-length coding and decoding methods for image data 失效
公开(公告)号：USRE40782E1
公开(公告)日：2009-06-23
申请号：US11738415
申请日：1995-11-03
申请人： Jae Moon Jo , Jechang Jeong
发明人： Jae Moon Jo , Jechang Jeong
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.

9. 再颁专利

USRE39167E1 Adaptive variable-length coding and decoding methods for image data 失效
标题翻译：图像数据的自适应可变长度编码和解码方法
公开(公告)号：USRE39167E1
公开(公告)日：2006-07-11
申请号：US09638796
申请日：1994-12-16
申请人： Jae Moon Jo , Jechang Jeong
发明人： Jae Moon Jo , Jechang Jeong
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G11B20/10527 , H03M7/42 , H04N19/13 , H04N19/157 , H04N19/159 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intro mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the run level data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length-coded.
摘要翻译：自适应可变长度编码/解码方法根据介入模式/帧间模式条件，量化步长和当前曲折扫描位置执行最佳可变长度编码和解码，使得具有不同的多个可变长度编码表设定根据运行状态数据的统计特性的规则区域和逃逸区域的图案。根据模式，量化步长和扫描位置选择可变长度编码表之一，并且根据所选择的可变长度编码表的正交变换系数是可变长度编码的。

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