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21. 发明授权

US08948251B2 Transcoding system using encoding history information 有权
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.

22. 再颁专利

USRE40415E1 Picture signal transmitting method and apparatus 有权
标题翻译：图像信号发送方法及装置
公开(公告)号：USRE40415E1
公开(公告)日：2008-07-01
申请号：US09497026
申请日：2000-02-02
申请人： Katsumi Tahara , Hiromi Yoshinari
发明人： Katsumi Tahara , Hiromi Yoshinari
IPC分类号： H04N7/12 , H04B1/66
CPC分类号： H04N21/4348 , H04N5/765 , H04N7/54 , H04N9/8042 , H04N19/159 , H04N19/172 , H04N19/40 , H04N19/46 , H04N19/61 , H04N21/23614
摘要： A picture type identifier, indicating one of intra-picture coding (an I-picture), forward or backward predictive coding (a P-picture) and bi-directionally predictive coding (a B-picture), is included with a picture signal when the signal is encoded and when the signal is decoded. Each of initial and subsequent encoding and decoding is a function of the included picture type.
摘要翻译：指示图像间编码（I图像），前向或后向预测编码（P图像）和双向预测编码（B图像）之一的图像类型标识符被包括在图像信号中信号被编码，并且信号被解码时。初始和后续编码和解码中的每一个都是所包含的图像类型的函数。

23. 发明申请

US20080013627A1 Transcoding system using encoding history information 失效
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.

24. 发明申请

US20070263719A1 Transcoding system using encoding history information 审中-公开
标题翻译：转码系统使用编码历史信息
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。

25. 发明授权

US06556627B2 Information processing apparatus, information processing method and recording medium 有权
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.

26. 发明授权

US06501901B2 Apparatus and method for performing an editing operation on data read-out from a storage medium which allows random access 失效
标题翻译：对从允许随机访问的存储介质读出的数据执行编辑操作的装置和方法
公开(公告)号：US06501901B2
公开(公告)日：2002-12-31
申请号：US09009049
申请日：1998-01-20
申请人： Mikita Yasuda , Katsumi Tahara , Motoki Kato
发明人： Mikita Yasuda , Katsumi Tahara , Motoki Kato
IPC分类号： H04N593
CPC分类号： G11B27/105 , G11B27/034 , G11B27/036 , G11B27/11 , G11B27/329 , G11B2220/2525 , G11B2220/2545 , G11B2220/2562 , G11B2220/65
摘要： When editing an image signal and a sound signal or these signals multiplexed using a conventional digital signal editing apparatus, it is necessary to provide a reproduction apparatus for reproducing an original signal and a recording apparatus for recording the signal edited. This significantly increases the size of the editing system. According to the present invention, a read-out unit 2 reads out I pictures, B pictures, P pictures, and a reproduction information on a reproduction interval of this coded data from a storage medium 1 allowing random access. A storage unit 3 stores the reproduction information read out from the storage medium 1 by the read-out unit 2. A control unit 3 controls read-out of the read-out unit 2 according to the aforementioned reproduction information from the storage unit 3. A decoding unit 5 decodes the coded data which have been read out by the read-out unit 2 controlled by the control unit 4, in such a manner that the data are temporally continuous and outputs an edited decoded data string.
摘要翻译：当使用传统的数字信号编辑装置编辑图像信号和声音信号或这些信号进行多路复用时，需要提供用于再现原始信号的再现装置和用于记录所编辑的信号的记录装置。这显着增加了编辑系统的尺寸。根据本发明，读出单元2从存储介质1中读出I图像，B图像，P图像和关于该编码数据的再现间隔的再现信息允许随机访问。存储单元3存储由读出单元2从存储介质1读出的再现信息。控制单元3根据来自存储单元3的上述再现信息控制读出单元2的读出。解码单元5以由数据在时间上连续的方式解码由控制单元4控制的读出单元2读出的编码数据，并输出编辑的解码数据串。

27. 发明授权

US06493832B1 Communication apparatus which handles a time stamp 失效
标题翻译：处理时间戳的通讯设备
公开(公告)号：US06493832B1
公开(公告)日：2002-12-10
申请号：US09280430
申请日：1999-03-29
申请人： Eisaburo Itakura , Yoichi Matsumura , Katsumi Tahara , Hiroaki Seto
发明人： Eisaburo Itakura , Yoichi Matsumura , Katsumi Tahara , Hiroaki Seto
IPC分类号： G06F104
CPC分类号： H04N21/8547 , H04N21/2368 , H04N21/2381 , H04N21/242 , H04N21/64307
摘要： A transmission side of a communication apparatus of the present invention makes use of a clock signal synchronized with a network to transmit an arrival interval of a PCR packet in which a PCR value is included and a synchronization residual. A reception side of the communication apparatus of the present invention calculates delay fluctuations caused by the network from the arrival interval and the synchronization residual included in the received PCR packet and modifies the PCR value based on the delay fluctuations.
摘要翻译：本发明的通信装置的发送侧利用与网络同步的时钟信号来发送包含PCR值的PCR分组的到达间隔和同步残差。本发明的通信装置的接收侧根据包括在接收到的PCR分组中的到达间隔和同步残差来计算由网络引起的延迟波动，并且基于延迟波动来修改PCR值。

28. 发明授权

US06345122B1 Compressed picture data editing apparatus and method 有权
标题翻译：压缩图像数据编辑装置及方法
公开(公告)号：US06345122B1
公开(公告)日：2002-02-05
申请号：US09231055
申请日：1999-01-14
申请人： Atsushi Yamato , Katsumi Tahara , Mikita Yasuda , Shinji Negishi
发明人： Atsushi Yamato , Katsumi Tahara , Mikita Yasuda , Shinji Negishi
IPC分类号： G06K946
CPC分类号： H04N21/23406 , G11B27/032 , G11B27/034 , G11B27/036 , G11B2220/20 , G11B2220/90 , H04N21/23424 , H04N21/23611 , H04N21/44004 , H04N21/44016 , H04N21/812
摘要： An editing apparatus and the like are provided for splicing two data streams of compressed picture data at an arbitrary splice point without breaking down the VBV buffer. The editing apparatus inserts between a main stream and a sub-stream compressed by the MPEG-2/Video Method an inserted stream of which a first picture is a black I picture and succeeding pictures are repeat P pictures of which all macro blocks are skipped macro blocks. In this inserted stream, a VBV delay of a picture to be transmitted next, after a last picture in the main stream, is written as a VBV delay of a first picture in the main stream into the picture header. Further, a stuffing byte of which the data amount is calculated based on the bit occupancy in the VBV buffer by the sub-stream at an arbitrary splice point is transmitted along with the last picture in the inserted stream.
摘要翻译：提供编辑装置等用于在任意的拼接点拼接两个压缩图象数据的数据流而不分解VBV缓冲器。编辑装置插入主流和通过MPEG-2 /视频方法压缩的子流之间，其中第一图像是黑色I图像的插入流和后续图像是重复所有宏块被跳过宏的P图像块。在该插入流中，在主流中的最后一个图像之后的下一个要发送的图像的VBV延迟被写入主流中的第一图像的VBV延迟到图像头。此外，通过任意拼接点处的子流，基于VBV缓冲器中的比特占有率计算数据量的填充字节与插入流中的最后一个图像一起被发送。

29. 发明授权

US6055271A Signal encoding method and apparatus and signal transmission method and apparatus involving the use of a number of pseudo access units 失效
标题翻译：信号编码方法以及涉及使用多个伪访问单元的装置和信号传输方法及装置
公开(公告)号：US6055271A
公开(公告)日：2000-04-25
申请号：US786086
申请日：1997-01-17
申请人： Mikita Yasuda , Katsumi Tahara , Noriaki Oishi , Shinji Negishi
发明人： Mikita Yasuda , Katsumi Tahara , Noriaki Oishi , Shinji Negishi
IPC分类号： H04N21/234 , H04N21/2368 , H04N21/434 , H04N21/44 , H04N7/16
CPC分类号： H04N21/23406 , H04N21/2368 , H04N21/42646 , H04N21/4334 , H04N21/4341 , H04N21/44004
摘要： A method and apparatus for encoding a digital signal in the form of a stream, which will be decoded later via a predetermined number of buffers, in which the digital signal is encoded by dividing each access unit defined for each bit stream into pseudo access units each having a predetermined size, calculating the time when the inputting of each pseudo access unit to the buffer is completed on the basis of the decoding time of the access unit and the data transfer rate of the buffer, and converting the pseudo access units into a packet so that the pseudo access units will be input to the buffer by the time determined by the calculation. If each access unit for each bit stream has a small size and if the decoding interval between adjacent access units is short, a plurality of the access units are combined into a single pseudo access unit depending on the size of the buffer and the data transfer rate of the buffer. The invention also provides a method and apparatus for transmitting similarly obtained data. Furthermore, the invention provides a recording medium for recording similarly obtained data.
摘要翻译：用于以流形式对数字信号进行编码的方法和装置，其将通过预定数量的缓冲器稍后解码，其中数字信号通过将为每个比特流定义的每个访问单元划分为伪访问单元来编码数字信号根据存取单元的解码时间和缓冲器的数据传送速率，计算出每个伪访问单元输入到缓冲区的时间，并将该伪访问单元转换成一个分组使得伪访问单元将由计算确定的时间输入到缓冲器。如果每个比特流的每个访问单元具有小的大小，并且如果相邻访问单元之间的解码间隔较短，则根据缓冲区的大小和数据传输速率将多个访问单元组合成单个伪访问单元的缓冲区。本发明还提供了用于传送类似地获得的数据的方法和装置。此外，本发明提供了用于记录类似地获得的数据的记录介质。

30. 发明授权

US5982444A Encoding method and apparatus for encoding edited picture signals, signal recording medium and picture signal decoding method and apparatus 失效
标题翻译：用于编码编辑图像信号的编码方法和装置，信号记录介质和图像信号解码方法和装置
公开(公告)号：US5982444A
公开(公告)日：1999-11-09
申请号：US95312
申请日：1998-06-10
申请人： Motoki Kato , Katsumi Tahara
发明人： Motoki Kato , Katsumi Tahara
IPC分类号： H04N5/44 , H04N7/01 , H04N7/26 , H04N9/804
CPC分类号： H04N9/8042 , H04N19/85 , H04N7/0112 , H04N7/012 , Y10S348/911
摘要： A picture signal encoding method in which a picture string produced by converting non-interlaced pictures into sets of field pictures each beginning from the first field of each interlaced picture and another picture string produced by converting non-interlaced pictures into sets of field pictures each beginning from the second field of each interlaced picture are combined together to an input picture signal for encoding, is disclosed. The method includes a detection step of detecting a lone field not constituting the non-interlaced picture in the input picture signal, and an encoding step of re-constructing the picture string of the input picture signal and encoding the resulting non-interlaced picture string.
摘要翻译：一种图像信号编码方法，其中通过将非隔行图像转换成从每个隔行扫描图像的第一场开始的场图像集合产生的图像串和通过将非隔行扫描图像转换为集合的场图像而开始的每个开始的另一图像串从每个隔行扫描图像的第二场组合到一个用于编码的输入图像信号。该方法包括检测步骤，检测输入图像信号中不构成非隔行扫描图像的孤立场;以及编码步骤，重新构建输入图像信号的图像串并对所得到的非隔行图像串进行编码。

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