公开(公告)号：US06438169B1

公开(公告)日：2002-08-20

申请号：US09261360

申请日：1999-03-03

申请人： Masatoshi Takashima ,  Daisuke Hiranaka ,  Eiji Ogura ,  Katsumi Tahara ,  Noriaki Oishi ,  Mikita Yasuda ,  Shinji Negishi

发明人： Masatoshi Takashima ,  Daisuke Hiranaka ,  Eiji Ogura ,  Katsumi Tahara ,  Noriaki Oishi ,  Mikita Yasuda ,  Shinji Negishi

IPC分类号： H04N1102

CPC分类号： H04N21/23406 ,  H04N7/52 ,  H04N19/46 ,  H04N21/44004

摘要： A video signal compressing method and a video signal compressing apparatus for compressing a video signal for a system in which for a synchronism between a plurality of compressed signals must be maintained. A presentation time stamp and/or a decode time stamp are multiplexed in a stream for transmission in which a video signal is compressed to generate a compressed signal. The following are generated as access unit information (AUI) for use in multiplexing the compressed data of the video signal: a picture size value, a picture type value, a repeat first field value, and a flag indicating the occurrence of a big picture.

摘要翻译： 视频信号压缩方法和用于压缩视频信号的视频信号压缩装置，其中必须维持用于多个压缩信号之间的同步的系统。 呈现时间戳和/或解码时间戳被复用在用于传输的流中，其中视频信号被压缩以产生压缩信号。 产生以下作为用于复用视频信号的压缩数据的存取单元信息（AUI）：图像尺寸值，图像类型值，重复第一场值和表示大图像的出现的标志。

公开(公告)号：US5949792A

公开(公告)日：1999-09-07

申请号：US841681

申请日：1997-04-30

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： G11B27/034 ,  G11B27/10 ,  G11B27/30 ,  H04N5/85 ,  H04N7/24 ,  H04N7/32 ,  H04N7/52 ,  H04N9/804 ,  H04N9/82 ,  H04J3/24

CPC分类号： H04N21/4347 ,  G11B27/034 ,  G11B27/105 ,  G11B27/3027 ,  H04N19/152 ,  H04N21/21805 ,  H04N21/42646 ,  H04N21/4325 ,  H04N21/4341 ,  H04N21/44004 ,  H04N21/44016 ,  H04N7/52 ,  H04N9/8042 ,  G11B2220/20 ,  G11B2220/2525 ,  H04N19/50 ,  H04N5/85 ,  H04N9/8227

摘要： A method for encoding a digital signal which is free from overflow and/or underflow of decoder buffer when video and audio data are reproduced while switching a plurality of bit streams from one to another, is disclosed. The method includes the steps of receiving a plurality of digital signal bit streams, detecting sizes of access units, as an encoding unit, of the plural digital signal bit streams, and decode times thereof, comparing the detected sizes of the access units at each decode time, with each other to select a maximum value thereof, providing a virtual stream composed of access units each having a size identical to the selected maximum value at each decode time, and packetizing each of the plural digital signal bit streams, wherein the plural digital signal bit streams are packetized by using padding packets each having a size corresponding to a difference in size between each access unit of the plural digital signal bit streams and that of the virtual stream, when the size of the access unit of the plural digital signal bit streams is less than the size of the access unit of the virtual stream. In accordance with the present invention, there are also provided an apparatus for encoding the digital signal, a method for recording the digital signal on a recording medium, and a method for transmitting the digital signal.

摘要翻译： 公开了一种在将多个比特流从一个切换到另一个时再现视频和音频数据时，对解码器缓冲器的溢出和/或下溢的数字信号进行编码的方法。 该方法包括以下步骤：接收多个数字信号比特流，检测多个数字信号比特流中的多个数字信号比特流作为编码单元的大小及其解码时间，比较每个解码时检测到的存取单元大小 时间彼此选择其最大值，提供由每个具有与每个解码时间所选择的最大值相同的大小的访问单元组成的虚拟流，以及分组多个数字信号比特流中的每一个，其中多个数字 当多个数字信号比特的存取单元的大小在多个数字信号比特流的访问单元和虚拟流的访问单元之间的大小时，通过使用各自具有与多个数字信号比特流的每个访问单元之间的大小差异的大小的填充分组来分组信号比特流 流小于虚拟流的访问单元的大小。 根据本发明，还提供了一种用于对数字信号进行编码的装置，一种用于在记录介质上记录数字信号的方法和一种用于发送数字信号的方法。

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。

公开(公告)号：US6141490A

公开(公告)日：2000-10-31

申请号：US865944

申请日：1997-05-30

申请人： Noriaki Oishi ,  Katsumi Tahara ,  Mikita Yasuda ,  Shinji Negishi

发明人： Noriaki Oishi ,  Katsumi Tahara ,  Mikita Yasuda ,  Shinji Negishi

IPC分类号： H04N5/92 ,  G11B20/10 ,  H04N5/85 ,  H04N7/24 ,  H04N7/52 ,  H04N9/804 ,  H04N9/806 ,  H04N9/82 ,  H04N9/877 ,  H04N19/00 ,  H04N19/44 ,  H04N19/70 ,  H04N5/928

CPC分类号： H04N21/23406 ,  H04N21/2368 ,  H04N21/4341 ,  H04N21/44004 ,  H04N9/8042 ,  H04N5/85 ,  H04N9/8063 ,  H04N9/8233 ,  H04N9/877

摘要： A multiplexed stream MBa is formed by multiplexing at step S1. In switching to given ones of N multiplexed streams MBb, buffer occupation information in an end portion of MBa is detected at step S2. At step S3, buffer quasi-amounts in a head portion of the given ones of MBb are detected and the given ones of MBb are formed by multiplexing such that the buffer quasi-amounts are not exceeded. At step S4, a locus of the maximum value of the buffer occupation amounts by the N streams MBb in their end portion is detected. At step S5, a multiplexed stream MBc is formed by multiplexing such that the locus of the maximum value of the occupation amounts is not exceeded.

摘要翻译： 多路复用流MBa通过在步骤S1的多路复用形成。 在切换到N个多路复用流MBb中的给定的一个时，在步骤S2检测到MBa的末尾部分中的缓冲器占用信息。 在步骤S3中，检测MBb中给定MBb的头部中的缓冲准量，并通过多路复用形成MBb中的给定MBb，使得不超过缓冲器准数量。 在步骤S4中，检测其端部中的N个流MBb的缓冲器占有量的最大值的轨迹。 在步骤S5，通过多路复用形成复用流MBc，使得不超过占用量的最大值的轨迹。

公开(公告)号：US06285689B1

公开(公告)日：2001-09-04

申请号：US08859402

申请日：1997-05-20

申请人： Shinji Negishi ,  Katsumi Tahara ,  Mikita Yasuda ,  Noriaki Oishi

发明人： Shinji Negishi ,  Katsumi Tahara ,  Mikita Yasuda ,  Noriaki Oishi

IPC分类号： H04J316

CPC分类号： H04N21/4344 ,  H04N7/52 ,  H04N21/2368 ,  H04N21/2389 ,  H04N21/4305 ,  H04N21/4341 ,  H04N21/4385 ,  H04N21/44004

摘要： A method and an apparatus for verifying a multiplexing schedule of digital signals and an apparatus for multiplexing the digital signals are provided. The verifying method includes the processes of extracting access unit information about each decoding unit from each elementary stream of the digital signal, determining schedule information about time division of each elementary stream, based on the access unit information, and verifying whether or not the multiplexing schedule for generating the multiplexed stream is valid, based on the access unit information and the schedule information. The verifying apparatus includes an extracting section for extracting access unit information about a decoding unit from each elementary stream of the digital signal, a determining section for determining schedule information about time division of the elementary stream, based on the access unit information, and a verifying section for verifying whether or not the multiplexing schedule for generating the multiplexed stream is valid, based on the access unit information and the schedule information.

摘要翻译： 提供一种用于验证数字信号的复用调度的方法和装置以及用于复用数字信号的装置。 验证方法包括从数字信号的每个基本流提取关于每个解码单元的接入单元信息的过程，基于接入单元信息确定关于每个基本流的时分的调度信息，以及验证复用调度 基于访问单元信息和日程信息来生成复用流是有效的。 验证装置包括：提取部，用于从数字信号的每个基本流提取关于解码单元的存取单元信息;确定部，用于基于访问单元信息确定关于基本流的时分的调度信息，以及验证 用于基于所述访问单元信息和所述调度信息来验证用于生成所述多路复用流的复用调度是否有效。

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。

公开(公告)号：US06414970B1

公开(公告)日：2002-07-02

申请号：US09235786

申请日：1999-01-22

申请人： Shinji Negishi ,  Katsumi Tahara ,  Mikita Yasuda

发明人： Shinji Negishi ,  Katsumi Tahara ,  Mikita Yasuda

IPC分类号： H04J307

CPC分类号： H04N21/23406 ,  H04N21/23608 ,  H04N21/2365 ,  H04N21/4344 ,  H04N21/4347 ,  H04N21/44004

摘要： A digital signal multiplexing method and apparatus in which plural degree-one multiplexed streams produced on time-divisionally multiplexing a bitstream of one or more digital signals are received and are time-divisionally multiplexed to generate a degree two multiplexed stream. Specifically, plural degree-one multiplexed streams are received, and the received degree-one multiplexed streams are time-divisionally multiplexed based on a repetitive pattern associated with the bitrate of the respective degree-one multiplexed streams to generate a degree two multiplexed stream. The time reference value attached to the degree two multiplexed stream is corrected based on the reference clocks not synchronized with the system clocks of the degree-one multiplexed streams. A pre-set volume of the dummy data is multiplexed if the corrected time reference value becomes larger than the time reference value attached to the degree-one multiplexed streams.

摘要翻译： 一种数字信号复用方法和装置，其中接收对一个或多个数字信号的比特流进行时分复用产生的多个一次多路复用流，并且被时分复用以产生二阶多路复用流。 具体地，接收多个一级多路复用流，并且基于与各个一级多路复用流的比特率相关联的重复模式对所接收的一级多路复用流进行时分复用，以生成二度多路复用流。 基于与一级多路复用流的系统时钟不同步的参考时钟校正附加到二级多路复用流的时间参考值。 如果校正的时间参考值变得大于附加到一级多路复用流的时间参考值，则复用伪数据的预设音量。

公开(公告)号：US06870861B1

公开(公告)日：2005-03-22

申请号：US09235711

申请日：1999-01-22

申请人： Shinji Negishi ,  Katsumi Tahara ,  Mikita Yasuda

发明人： Shinji Negishi ,  Katsumi Tahara ,  Mikita Yasuda

IPC分类号： H04N7/08 ,  H04H1/00 ,  H04J3/00 ,  H04J3/16 ,  H04L12/56 ,  H04L12/70 ,  H04N7/081 ,  H04J3/02

CPC分类号： H04J3/1641

摘要： A digital signal multiplexing device packetizes one or more bitstreams of digital signals to form packets and multiplexes the respective bitstreams on the packet basis to produce plural degree-one multiplexed streams which are received. The digital signal multiplexing device also sets the sequence of time-divisional multiplexing of the packets as interleaving patterns repeated at a pre-set period. The digital signal multiplexing device time-divisionally multiplexes the degree-one multiplexed streams on the packet basis to generate a degree-two multiplexed stream.

摘要翻译： 数字信号复用装置对一个或多个数字信号比特流进行打包以形成分组，并以分组为基础多路复用各个比特流，以产生被接收的多个一级多路复用流。 数字信号复用装置还将分组的时分复用的顺序设置为在预设周期重复的交织模式。 数字信号复用装置在分组的基础上时分复用一级多路复用流，生成二分之一多路复用流。

公开(公告)号：US06529550B2

公开(公告)日：2003-03-04

申请号：US09323771

申请日：1999-06-01

申请人： Katsumi Tahara ,  Mikita Yasuda ,  Shinji Negishi

发明人： Katsumi Tahara ,  Mikita Yasuda ,  Shinji Negishi

IPC分类号： H04B166

CPC分类号： H04N19/70 ,  H04N21/23406 ,  H04N21/23424 ,  H04N21/44004 ,  H04N21/44016 ,  H04N21/812

摘要： A system for seamlessly splicing two encoded video streams. In one implementation of the system, one or more coding parameters are extracted from the first and/or second encoded streams and one or more parameters of the first and/or second encoded streams are changed in accordance with the extracted parameter(s) in order to effectuate seamless splicing. In another implementation, the coding parameters applied to the first encoded stream are referenced when encoding the second stream such that the resulting second encoded stream can be seamlessly spliced with the first encoded stream.

摘要翻译： 用于无缝拼接两个编码视频流的系统。 在系统的一个实施方式中，从第一和/或第二编码流中提取一个或多个编码参数，并且根据提取的参数按顺序改变第一和/或第二编码流的一个或多个参数 实现无缝拼接。 在另一实现中，在对第二流进行编码时，参考应用于第一编码流的编码参数，使得所得到的第二编码流可以与第一编码流无缝拼接。

公开(公告)号：US06754239B2

公开(公告)日：2004-06-22

申请号：US09048193

申请日：1998-03-25

申请人： Shinji Negishi ,  Katsumi Tahara ,  Noriaki Oishi

发明人： Shinji Negishi ,  Katsumi Tahara ,  Noriaki Oishi

IPC分类号： H04J302

CPC分类号： G11B27/034 ,  G11B27/032 ,  G11B2220/20 ,  G11B2220/218 ,  G11B2220/2525 ,  G11B2220/2545 ,  G11B2220/90 ,  H04N21/42646 ,  H04N21/4334

摘要： A multiplexing apparatus and method, a transmitting apparatus and method, and a recording medium arranged to prevent a delay of one of multiplexing scheduling processing and multiplexing processing in accordance with a schedule obtained by the multiplexing scheduling processing from influencing the other of these processings. A scheduler calculates schedule information on the basis of access unit information from an encoder and stores the calculated schedule information by supplying it to an intermediate buffer. If some additional data is to be multiplexed, the scheduler also calculates the additional data and stores the calculated additional data by supplying it to an intermediate buffer. A bit stream multiplexer reads out schedule information from the schedule information intermediate buffer, selects data designated by the schedule information from an elementary stream from the encoder and from additional data stored in the additional data intermediate buffer, and outputs the data as a multiplexed stream.

摘要翻译： 一种多路复用装置和方法，发送装置和方法以及记录介质，被配置为根据由复用调度处理获得的调度来防止多路复用调度处理和多路复用处理之一的延迟影响这些处理中的另一个。 调度器基于来自编码器的访问单元信息来计算调度信息，并且通过将调度信息提供给中间缓冲器来存储所计算的调度信息。 如果要复用一些附加数据，则调度器还计算附加数据，并通过将计算的附加数据提供给中间缓冲器来存储所计算的附加数据。 比特流多路复用器从调度信息中间缓冲器读出调度信息，从编码器的基本流和从附加数据中间缓冲器中存储的附加数据中选择由调度信息指定的数据，并将该数据作为多路复用流输出。