公开(公告)号：US07126993B2

公开(公告)日：2006-10-24

申请号：US10371897

申请日：2003-02-20

申请人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

发明人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

IPC分类号： H04N7/12 ,  H04N5/26 ,  H04N7/26 ,  H04B1/11

CPC分类号： H04N5/4401 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N11/20 ,  H04N19/107 ,  H04N19/11 ,  H04N19/112 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/137 ,  H04N19/149 ,  H04N19/152 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/188 ,  H04N19/196 ,  H04N19/40 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/23602 ,  H04N21/23614 ,  H04N21/2662 ,  H04N21/4342 ,  H04N21/4348 ,  H04N21/435

摘要： Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into auxiliary packets inserted respectively into a V-blanking area and an H-blanking area of a video-data signal output by a history-information-multiplexing apparatus employed in a video-decoding system. On the other hand, a video-encoding system extracts back the auxiliary packets superposed on the V-blanking area and the H-blanking area from an input base-band video signal. As a result, a technique of superposing information on data can be changed in accordance with the importance of the information and required information can be fetched with ease.

公开(公告)号：US06556627B2

公开(公告)日：2003-04-29

申请号：US09727347

申请日：2000-11-30

申请人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

发明人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

IPC分类号： H04N576

CPC分类号： H04N5/4401 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N11/20 ,  H04N19/107 ,  H04N19/11 ,  H04N19/112 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/137 ,  H04N19/149 ,  H04N19/152 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/188 ,  H04N19/196 ,  H04N19/40 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/23602 ,  H04N21/23614 ,  H04N21/2662 ,  H04N21/4342 ,  H04N21/4348 ,  H04N21/435

摘要： Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into auxiliary packets inserted respectively into a V-blanking area and an H-blanking area of a video-data signal output by a history-information-multiplexing apparatus employed in a video-decoding system. On the other hand, a video-encoding system extracts back the auxiliary packets superposed on the V-blanking area and the H-blanking area from an input base-band video signal. As a result, a technique of superposing information on data can be changed in accordance with the importance of the information and required information can be fetched with ease.

公开(公告)号：US08170118B2

公开(公告)日：2012-05-01

申请号：US11510995

申请日：2006-08-28

申请人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

发明人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N5/4401 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N11/20 ,  H04N19/107 ,  H04N19/11 ,  H04N19/112 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/137 ,  H04N19/149 ,  H04N19/152 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/188 ,  H04N19/196 ,  H04N19/40 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/23602 ,  H04N21/23614 ,  H04N21/2662 ,  H04N21/4342 ,  H04N21/4348 ,  H04N21/435

摘要： Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into auxiliary packets inserted respectively into a V-blanking area and an H-blanking area of a video-data signal output by a history-information-multiplexing apparatus employed in a video-decoding system. On the other hand, a video-encoding system extracts back the auxiliary packets superposed on the V-blanking area and the H-blanking area from an input base-band video signal. As a result, a technique of superposing information on data can be changed in accordance with the importance of the information and required information can be fetched with ease.

摘要翻译： 将图像的编码参数和对多个应用的​​重要性的较高层以及对于所有应用不重要的切片和较低层的编码参数被转换成分别插入到V消隐区域和H消隐区域的H消隐区域中的辅助分组 由视频解码系统中采用的历史信息复用装置输出的视频数据信号。 另一方面，视频编码系统从输入基带视频信号中提取叠加在V消隐区域和H消隐区域上的辅助分组。 结果，可以根据信息的重要性来改变对数据叠加信息的技术，并且可以容易地获得所需的信息。

公开(公告)号：US20060291570A1

公开(公告)日：2006-12-28

申请号：US11510995

申请日：2006-08-28

申请人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

发明人： Takuya Kitamura ,  Mamoru Ueda ,  Katsumi Tahara

IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N5/4401 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N11/20 ,  H04N19/107 ,  H04N19/11 ,  H04N19/112 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/137 ,  H04N19/149 ,  H04N19/152 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/188 ,  H04N19/196 ,  H04N19/40 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/23602 ,  H04N21/23614 ,  H04N21/2662 ,  H04N21/4342 ,  H04N21/4348 ,  H04N21/435

摘要： Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into auxiliary packets inserted respectively into a V-blanking area and an H-blanking area of a video-data signal output by a history-information-multiplexing apparatus employed in a video-decoding system. On the other hand, a video-encoding system extracts back the auxiliary packets superposed on the V-blanking area and the H-blanking area from an input base-band video signal. As a result, a technique of superposing information on data can be changed in accordance with the importance of the information and required information can be fetched with ease.

公开(公告)号：US08638849B2

公开(公告)日：2014-01-28

申请号：US11879400

申请日：2007-07-17

申请人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

发明人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

IPC分类号： H04B1/66

CPC分类号： H04N19/0006 ,  H04N19/10 ,  H04N19/107 ,  H04N19/115 ,  H04N19/152 ,  H04N19/40 ,  H04N19/428 ,  H04N19/61

摘要： The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

公开(公告)号：US20080232464A1

公开(公告)日：2008-09-25

申请号：US11879245

申请日：2007-07-17

申请人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

发明人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

IPC分类号： H04N7/26

CPC分类号： H04N19/0006 ,  H04N19/10 ,  H04N19/107 ,  H04N19/115 ,  H04N19/152 ,  H04N19/40 ,  H04N19/428 ,  H04N19/61

摘要： The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

公开(公告)号：US08982946B2

公开(公告)日：2015-03-17

申请号：US11879401

申请日：2007-07-17

申请人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

发明人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

IPC分类号： H04N7/50 ,  H04N19/115 ,  H04N19/426 ,  H04N19/61 ,  H04N19/152 ,  H04N19/107 ,  H04N19/40

CPC分类号： H04N19/0006 ,  H04N19/10 ,  H04N19/107 ,  H04N19/115 ,  H04N19/152 ,  H04N19/40 ,  H04N19/428 ,  H04N19/61

摘要： The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

公开(公告)号：US08948251B2

公开(公告)日：2015-02-03

申请号：US11879403

申请日：2007-07-17

申请人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

发明人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

IPC分类号： H04N7/50 ,  H04N19/115 ,  H04N19/426 ,  H04N19/61 ,  H04N19/152 ,  H04N19/107 ,  H04N19/40

CPC分类号： H04N19/0006 ,  H04N19/10 ,  H04N19/107 ,  H04N19/115 ,  H04N19/152 ,  H04N19/40 ,  H04N19/428 ,  H04N19/61

摘要： The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

公开(公告)号：US20080013627A1

公开(公告)日：2008-01-17

申请号：US11879407

申请日：2007-07-17

申请人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

发明人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

IPC分类号： H04B1/66

CPC分类号： H04N19/0006 ,  H04N19/10 ,  H04N19/107 ,  H04N19/115 ,  H04N19/152 ,  H04N19/40 ,  H04N19/428 ,  H04N19/61

摘要： The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

公开(公告)号：US20070263719A1

公开(公告)日：2007-11-15

申请号：US11879401

申请日：2007-07-17

申请人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

发明人： Katsumi Tahara ,  Yoshihiro Murakami ,  Takuya Kitamura ,  Kanji Mihara

IPC分类号： H04B1/66

CPC分类号： H04N19/0006 ,  H04N19/10 ,  H04N19/107 ,  H04N19/115 ,  H04N19/152 ,  H04N19/40 ,  H04N19/428 ,  H04N19/61

摘要： The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

摘要翻译： 本发明提供一种具有MPEG解码器和MPEG编码器的代码转换器，用于改变作为编码处理的结果获得的GOP结构和编码比特流的比特率。 MPEG编码器接收在过去的编码处理中生成的过去的编码参数作为历史信息，并且通过选择性地使用过去的编码参数来执行当前编码处理，使得当前编码处理被优化。 此外，编码器将过去的编码参数描述为编码比特流中的历史信息，以便在预编码处理中重用历史信息。 即使通过代码转换器重复执行解码和编码处理，视频数据的图像质量也不会劣化。