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    Coding method and apparatus for input image data and a recording medium performing such method
    93.
    发明申请
    Coding method and apparatus for input image data and a recording medium performing such method 失效
    用于输入图像数据的编码方法和装置以及执行这种方法的记录介质

    公开(公告)号：US20040184532A1

    公开(公告)日：2004-09-23

    申请号：US10786147

    申请日：2004-02-26

    发明人： Tatsuro Juri ,  Tadashi Ono

    IPC分类号： H04N007/12

    CPC分类号： H04N19/88 ,  H04N19/124 ,  H04N19/126 ,  H04N19/13 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/30 ,  H04N19/423 ,  H04N19/60 ,  H04N19/61 ,  H04N19/90 ,  H04N19/91

    摘要： At the time of coding input image and audio data, and decoding coded video and audio data by using a computer, the amount of computation required per unit time becomes enormous, whereby it has been very difficult to carry out coding and decoding in real time. As for coding methods in accordance with the present invention, a first method is a method wherein signal format conversion, orthogonal transform and variable-length coding are carried out continuously with predetermined small areas in a frame used as units, and the number of memory access times is decreased, whereby high-speed processing is attained. A second method is a method wherein orthogonal transform computation is omitted by using orthogonal transform coefficients, whereby processing time is shortened. A third method is a method wherein, in additions and subtractions used for orthogonal transform and the like, the number of registers to be used is decreased, and the number of memory access times is reduced, whereby high-speed processing is attained. The decoding method in accordance with the present invention is a method wherein, in variable-length decoding, table size is not made larger, the number of table access times per code word is set to 2 at the maximum, and plural code words are decoded by one table access operation, whereby high-speed decoding is attained.

    摘要翻译： 在编码输入图像和音频数据时，通过使用计算机对编码的视频和音频数据进行解码，每单位时间所需的计算量变得巨大，由此实时地进行编码和解码是非常困难的。 对于根据本发明的编码方法，第一种方法是一种方法，其中信号格式转换，正交变换和可变长度编码在用作单位的帧中以预定的小区域连续地执行，并且存储器访问的数量 时间减少，从而实现高速处理。 第二种方法是通过使用正交变换系数来省略正交变换计算的方法，由此缩短处理时间。 第三种方法是一种方法，其中，在用于正交变换等的加法和减法中，减少了要使用的寄存器的数量，并且减少了存储器访问次数，从而实现了高速处理。 根据本发明的解码方法是一种方法，其中在可变长度解码中，表格尺寸不变大，每个码字的表访问次数最多被设置为2，并且多个码字被解码 通过一个表访问操作，由此实现高速解码。

    Method and system for delivering media selections through a network
    96.
    发明申请
    Method and system for delivering media selections through a network 审中-公开
    通过网络传送媒体选择的方法和系统

    公开(公告)号：US20020114330A1

    公开(公告)日：2002-08-22

    申请号：US09993629

    申请日：2001-11-27

    发明人： Kwok Wai Cheung ,  Kwong Wing Raymond Chan ,  Kwun Chung Chan ,  Cheuk Yin Tam ,  Chun Hay Chan ,  Chi Ho Ng

    IPC分类号： H04L012/56

    CPC分类号： H04N21/23406 ,  H04N7/17336 ,  H04N19/88 ,  H04N19/89 ,  H04N21/2225 ,  H04N21/23106 ,  H04N21/2387 ,  H04N21/26616 ,  H04N21/4331 ,  H04N21/6375 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/6587

    摘要： In a large-scale video-on-demand (VOD) system, the scalability and the provision of truly interactive functions are two difficult problems which have not been resolved satisfactorily. It is easy to provide fully interactive functions using unicast streams but these systems are limited in their scalability which affect the cost of service provisioning. Batching systems based on multicast streaming, on the other hand, can increase the scalability but it is difficult to provide interactive functions on these systems. This invention provides a media delivery system having a novel architecture aiming at serving millions of users in a metropolitan area. It features hybrid multicast-unicast streaming to achieve both scalability and full interactivity through the provision of distributed interactive servers, which cached the multicast media streams generated by the media servers. The interactive servers may also provide fault tolerant routing and error recovery.

    摘要翻译： 在大规模视频点播（VOD）系统中，可扩展性和真正交互功能的提供是两个难以解决的难题。 使用单播流可以很容易地提供完全交互的功能，但是这些系统的可扩展性受到限制，这会影响服务提供的成本。 另一方面，基于组播流的批处理系统可以增加可扩展性，但是难以在这些系统上提供交互功能。 本发明提供一种媒体传送系统，其具有旨在为大都市地区数百万用户服务的新颖架构。 它具有混合组播单播流，通过提供分布式交互式服务器实现可扩展性和完全交互性，从而缓存媒体服务器生成的多播媒体流。 交互式服务器还可以提供容错路由和错误恢复。

    Method and apparatus for selecting a quantization table for encoding a digital image
    97.
    发明授权
    Method and apparatus for selecting a quantization table for encoding a digital image 失效
    用于选择用于对数字图像进行编码的量化表的方法和装置

    公开(公告)号：US06266375B1

    公开(公告)日：2001-07-24

    申请号：US08970116

    申请日：1997-11-13

    申请人： Ching-Fang Chang ,  Chuen-Chien Lee ,  Naofumi Yanagihara

    发明人： Ching-Fang Chang ,  Chuen-Chien Lee ,  Naofumi Yanagihara

    IPC分类号： H04N730

    CPC分类号： H04N19/88 ,  H04N19/124 ,  H04N19/126 ,  H04N19/60

    摘要： A method and apparatus for selecting a quantization table containing quantization coefficients for encoding image data. A set of quantization tables is examined to determine a quantization table which meets a predetermined selection criteria. If such a quantization table is not the first table examined, other tables in the vicinity of a neighborhood of tables are examined utilizing linear searching techniques. If a quantization table which meets the selection criteria is not determined in the vicinity of the neighborhood of tables, quantization tables outside the vicinity of the neighborhood of tables are examined utilizing binary searching techniques.

    摘要翻译： 一种用于选择包含用于编码图像数据的量化系数的量化表的方法和装置。 检查一组量化表以确定满足预定选择标准的量化表。 如果这样的量化表不是检查的第一表，则使用线性搜索技术来检查表附近附近的其他表。 如果在表附近没有确定满足选择标准的量化表，则利用二进制搜索技术检查表附近附近的量化表。

    Apparatus and method for recovery of quantization codes in a lossy transmission environment
    98.
    发明授权
    Apparatus and method for recovery of quantization codes in a lossy transmission environment 失效
    用于在有损传输环境中恢复量化码的装置和方法

    公开(公告)号：US06212663B1

    公开(公告)日：2001-04-03

    申请号：US09111116

    申请日：1998-07-06

    申请人： Tetsujiro Kondo ,  James J. Carrig ,  Yasuhiro Fujimori ,  Sugata Ghosal

    发明人： Tetsujiro Kondo ,  James J. Carrig ,  Yasuhiro Fujimori ,  Sugata Ghosal

    IPC分类号： H03M1300

    CPC分类号： H04N19/85 ,  H04N5/21 ,  H04N5/4401 ,  H04N19/59 ,  H04N19/88 ,  H04N19/89 ,  H04N19/895 ,  H04N19/98

    摘要： A system and method for decoding a signal comprising fixed-length data (FL-data) and variable length data (VL-data) is disclosed. In one embodiment, groups of fixed length data (FL-data) and blocks of variable length data (VL-data) are stored in a predetermined space. Each group of FL-data corresponds to a block of VL-data. The blocks of VL-data are retrieved by referencing corresponding groups of FL-data. In one embodiment, this system and method permits bidirectional recovery of data. In one embodiment, this is used in the transmission of video signals over a potentially lossy communications channel.

    摘要翻译： 公开了一种用于解码包括固定长度数据（FL数据）和可变长度数据（VL数据）的信号的系统和方法。 在一个实施例中，固定长度数据组（FL数据）和可变长度数据块（VL数据）被存储在预定空间中。 每组FL数据对应于VL数据块。 通过引用相应的FL数据组来检索VL数据块。 在一个实施例中，该系统和方法允许数据的双向恢复。 在一个实施例中，这用于通过潜在有损耗的通信信道传输视频信号。