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1. 发明申请

US20120002721A1 METHOD AND SYSTEM FOR MULTI-LAYER RATE CONTROL FOR A MULTI-CODEC SYSTEM 有权
标题翻译：用于多编解码系统的多层速率控制的方法和系统
公开(公告)号：US20120002721A1
公开(公告)日：2012-01-05
申请号：US12845498
申请日：2010-07-28
申请人： Gheorghe Berbecel , Xuemin Chen
发明人： Gheorghe Berbecel , Xuemin Chen
IPC分类号： H04N7/26
CPC分类号： H04N19/0006 , H04N19/115 , H04N19/124 , H04N19/146 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/187 , H04N19/61 , H04N21/2365
摘要： A video transmitter comprising a plurality of encoders may be operable to determine, for a transport stream, a constant overall number of bits per time interval corresponding to a frame in the transport stream. For each time interval corresponding to a start and an end of encoding of each of frames using each of the encoders, the video transmitter may allocate a target number of bits to each of the frames to achieve the constant overall number of bits. The allocation of the target number of bits may be based on frame types of the frames and CODEC types of the encoders, where the allocated target number of bits for each of the frames meets buffer overflow/underflow requirements associated with each of the encoders. A quantization parameter (QP) may be calculated and adjusted at each of one or more layers for generating an actual number of bits during encoding.
摘要翻译：包括多个编码器的视频发射器可以用于为传输流确定对应于传输流中的帧的每个时间间隔的恒定总体位数。对于使用每个编码器的每个帧的编码的开始和结束的每个时间间隔，视频发送器可以向每个帧分配目标比特数以实现恒定的总比特数。目标位数的分配可以基于编码器的帧和CODEC类型的帧类型，其中每个帧的分配的目标位数满足与每个编码器相关联的缓冲器溢出/下溢要求。可以在一个或多个层中的每一个处计算和调整量化参数（QP），以在编码期间生成实际的位数。

2. 发明授权

US08938000B2 Transcoding system using encoding history information 有权
公开(公告)号：US08938000B2
公开(公告)日：2015-01-20
申请号：US11879406
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.

3. 发明申请

US20080013626A1 Transcoding system using encoding history information 审中-公开
公开(公告)号：US20080013626A1
公开(公告)日：2008-01-17
申请号：US11879406
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.

4. 发明申请

US20080013625A1 Transcoding system using encoding history information 失效
公开(公告)号：US20080013625A1
公开(公告)日：2008-01-17
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.

5. 发明授权

US09197889B2 Method and system for multi-layer rate control for a multi-codec system 有权
标题翻译：用于多编解码系统的多层速率控制的方法和系统
公开(公告)号：US09197889B2
公开(公告)日：2015-11-24
申请号：US14186938
申请日：2014-02-21
申请人： BROADCOM CORPORATION
发明人： Gheorghe Berbecel , Xuemin Chen
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N5/14 , H04N9/64 , H04N7/01 , H04N11/20 , G06K9/32 , H04N19/115 , H04N21/2365 , H04N19/176 , H04N19/172 , H04N19/61 , H04N19/124 , H04N19/146 , H04N19/152 , H04N19/187
CPC分类号： H04N19/0006 , H04N19/115 , H04N19/124 , H04N19/146 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/187 , H04N19/61 , H04N21/2365
摘要： A video transmitter comprising a plurality of encoders may be operable to determine, for a transport stream, a constant overall number of bits per time interval corresponding to a frame in the transport stream. For each time interval corresponding to a start and an end of encoding of each of frames using each of the encoders, the video transmitter may allocate a target number of bits to each of the frames to achieve the constant overall number of bits. The allocation of the target number of bits may be based on frame types of the frames and CODEC types of the encoders, where the allocated target number of bits for each of the frames meets buffer overflow/underflow requirements associated with each of the encoders. A quantization parameter (QP) may be calculated and adjusted at each of one or more layers for generating an actual number of bits during encoding.
摘要翻译：包括多个编码器的视频发射器可以用于为传输流确定对应于传输流中的帧的每个时间间隔的恒定总体位数。对于使用每个编码器的每个帧的编码的开始和结束的每个时间间隔，视频发送器可以向每个帧分配目标比特数以实现恒定的总比特数。目标位数的分配可以基于编码器的帧和CODEC类型的帧类型，其中每个帧的分配的目标位数满足与每个编码器相关联的缓冲器溢出/下溢要求。可以在一个或多个层中的每一个处计算和调整量化参数（QP），以在编码期间生成实际的位数。

6. 发明授权

US08638849B2 Transcoding system using encoding history information 失效
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.

7. 发明申请

US20080232464A1 Transcoding system using encoding history information 审中-公开
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.

8. 发明申请

US20030128766A1 Transcoding system using encoding history information 有权
标题翻译：转码系统使用编码历史信息
公开(公告)号：US20030128766A1
公开(公告)日：2003-07-10
申请号：US10342055
申请日：2003-01-14
申请人： SONY CORPORATION
发明人： Katsumi Tahara , Yoshihiro Murakami , Takuya Kitamura , Kanji Mihara
IPC分类号： H04N007/12
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编码比特流的GOP结构和比特率。 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。

9. 发明授权

US08934536B2 Transcoding system using encoding history information 有权
公开(公告)号：US08934536B2
公开(公告)日：2015-01-13
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： H04B1/66 , 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.

10. 发明授权

US08687690B2 Transcoding system using encoding history information 失效
标题翻译：转码系统使用编码历史信息
公开(公告)号：US08687690B2
公开(公告)日：2014-04-01
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.
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。

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