Digital television transmission with error correction
    1.
    发明授权
    Digital television transmission with error correction 失效
    数字电视传输带纠错

    公开(公告)号:US07992068B2

    公开(公告)日:2011-08-02

    申请号:US10574608

    申请日:2004-09-30

    IPC分类号: H03M13/29 H03M13/35 H04N7/66

    摘要: In a transmitter, a standard stream of encoded multi-media data and uniform error correction data is transmitted through a first channel. The uniform error correction data provides substantially the same error correction for all portions of the encoded multimedia data. Simultaneously, additional unequal error correction data is generated for critical portions of the standard stream and not for other portions of the standard stream, and the additional error correct data is transmitted through a second channel. In a receiver, the additional error correct data is used to error correct just the critical portions of the standard stream, and then the uniform error correction data is used to error correct all the portions of the encoded multimedia data of the standard stream.

    摘要翻译: 在发射机中,编码的多媒体数据的标准流和均匀纠错数据通过第一信道传输。 均匀纠错数据为编码的多媒体数据的所有部分提供基本相同的纠错。 同时,为标准流的关键部分而不是标准流的其他部分生成附加的不相等的纠错数据,并且通过第二通道发送附加的错误正确数据。 在接收机中,使用附加的错误校正数据来错误地校正标准流的关键部分,然后使用均匀纠错数据来错误校正标准流的编码多媒体数据的所有部分。

    Video Coding
    2.
    发明申请
    Video Coding 有权
    视频编码

    公开(公告)号:US20080192826A1

    公开(公告)日:2008-08-14

    申请号:US11916489

    申请日:2006-06-01

    申请人: Timothy R Jebb

    发明人: Timothy R Jebb

    IPC分类号: H04N11/02 H04N7/66 H04N7/36

    CPC分类号: H04N19/503

    摘要: A video signal is coded by generating, at a transmitter, a difference signal (at 2) representing the differences between a picture to be transmitted and a predicted picture based on a stored locally decoded picture. This is decoded to generate a fresh locally decoded picture. The transmitter also generates a check signal, such as a CRC, as a function of the locally decoded picture. The receiver decodes the difference signal to create a decoded picture. It compares the decoded picture with the check signal, and generates an error signal if the two do not tally.

    摘要翻译: 通过在发送器处生成表示要发送的图像与预测图像之间的差的差信号(基于所存储的局部解码的图像)来编码视频信号。 这被解码以产生新鲜的本地解码的图片。 发射机还根据本地解码的图像生成诸如CRC的校验信号。 接收机解码差分信号以产生解码图像。 它将解码图像与检查信号进行比较,如果两者不符合,则生成错误信号。

    Error detecting method and apparatus
    3.
    发明授权
    Error detecting method and apparatus 有权
    错误检测方法和装置

    公开(公告)号:US07134064B2

    公开(公告)日:2006-11-07

    申请号:US10713272

    申请日:2003-11-17

    申请人: Sung-Deuk Kim

    发明人: Sung-Deuk Kim

    IPC分类号: H04N7/64 H04N7/66

    CPC分类号: H03M13/05

    摘要: An error detecting method and apparatus may be provided for a moving image transmitting system. An error detection code may be generated for each data block of a frame. The generated error detection code may be inserted into a byte alignment code of the data block. The frame may then be transmitted from a transmitting side to a receiving side. A byte alignment code may be extracted from each data block after the frame is received at the receiving side. Errors may be detected based on the extracted code. The method may enable a moving image encoder to be stably operated and allow improvement of the picture quality. Also, the method may allow the byte alignment code, which has been regarded as meaningless information, to be associated with a channel code so as to enhance error detection efficiency.

    摘要翻译: 可以为运动图像发送系统提供错误检测方法和装置。 可以为帧的每个数据块生成错误检测码。 所生成的错误检测码可以被插入到数据块的字节对齐码中。 然后可以将帧从发送侧发送到接收侧。 在接收侧接收到帧之后,可以从每个数据块中提取字节对齐码。 可以基于提取的代码来检测错误。 该方法可以使运动图像编码器稳定地操作并且允许提高图像质量。 此外,该方法可以允许将被认为是无意义的信息的字节对齐码与信道码相关联,以增强错误检测效率。

    Coding and decoding a signal modified in accordance with the feedback states of an encoder
    5.
    发明授权
    Coding and decoding a signal modified in accordance with the feedback states of an encoder 有权
    编码和解码根据编码器的反馈状态修改的信号

    公开(公告)号:US06917655B2

    公开(公告)日:2005-07-12

    申请号:US10215081

    申请日:2002-08-08

    摘要: A data encoding system includes a modifier, an encoder, and a feedback. The modifier receives a first data stream and modifies the first data stream so as to provide a second data stream. The encoder encodes the second data stream in order to provide an output. At least a portion of the output has predetermined symbol values. A feedback from the encoder to the modifier provides encoder states to the modifier. The modifier modifies the first data stream based on the encoder states so as to facilitate the encoder in providing the portion of the output having the predetermined symbol values. A receiver receives a signal based on the output and decodes the signal.

    摘要翻译: 数据编码系统包括修改器,编码器和反馈。 修改器接收第一数据流并修改第一数据流以便提供第二数据流。 编码器对第二数据流进行编码,以提供输出。 输出的至少一部分具有预定的符号值。 从编码器到修改器的反馈为编辑器提供编码器状态。 修改器基于编码器状态修改第一数据流,以便于编码器提供具有预定符号值的输出部分。 接收机基于输出接收信号并对信号进行解码。

    Shuffle encoded video data recording and reproduction
    8.
    发明授权
    Shuffle encoded video data recording and reproduction 失效
    随机播放编码的视频数据记录和再现

    公开(公告)号:US6108487A

    公开(公告)日:2000-08-22

    申请号:US903959

    申请日:1997-07-31

    申请人: Takayuki Takeda

    发明人: Takayuki Takeda

    摘要: Video data recording apparatus for recording video data representing successive video images comprises a tape recording system in which video data is recorded on successive tracks of a tape recording medium, video data representing each image occupying a predetermined plurality (n) of successive tracks; and a data shuffler for shuffling the video data according to a shuffle pattern, for recording on the successive tracks of the tape recording medium, so that video data representing each of a plurality of sub-areas of an image is recorded in respective parts on all n tracks occupied by that image, at respective track positions so that corresponding positions along pairs of adjacent tracks are occupied by data representing different ones of the plurality of sub-areas.

    摘要翻译: 用于记录表示连续视频图像的视频数据的视频数据记录装置包括磁带记录系统,其中视频数据被记录在磁带记录介质的连续轨道上,表示每个图像占据预定的多个(n)个连续轨道的图像数据; 以及数据洗牌器,用于根据洗牌模式对视频数据进行混洗,以便在带记录介质的连续轨道上记录,使得表示图像的多个子区域中的每一个的视频数据被记录在所有的各个部分中 由该图像占据的n个轨道,在相应的轨道位置处,使得沿着相邻轨道对的对应位置被表示多个子区域中的不同子区域的数据占据。

    Data transmission protocol method and apparatus
    9.
    发明授权
    Data transmission protocol method and apparatus 失效
    数据传输协议方法及装置

    公开(公告)号:US5854840A

    公开(公告)日:1998-12-29

    申请号:US859262

    申请日:1997-05-20

    摘要: A data communications protocol for single path media having low data error rate requires the generation of a data packet with a start code field having a predetermined pattern, a byte count field for defining a data field having a maximum predetermined length in bytes, a data payload field having a byte count according to the value of the byte count field and a cyclic redundancy check field of predetermined length. The value of the byte count field may be fixed, may be changed from packet to packet or may be changed upon initialization. The described data communications protocol permits utilization with data types varying from high definition television to alarm reporting applications. Moreover, the data rate may be varied by varying an idle time signal duration up to a maximum (when the idle time signal duration is reduced to zero). According to one exemplary embodiment for plastic fiber optic media, MPEG2 transport stream packets may be transmitted at 54 MBaud over distances of 20 meters or even more with other media.

    摘要翻译: 具有低数据错误率的单路介质的数据通信协议需要产生具有预定模式的起始码字段的数据分组,用于定义具有最大预定长度(以字节为单位)的数据字段的字节计数字段,数据有效载荷 字段具有根据字节计数字段的值的字节计数和预定长度的循环冗余校验字段。 字节计数字段的值可以是固定的,可以从分组改变到分组,或者可以在初始化时被改变。 所描述的数据通信协议允许利用从高清晰度电视到报警报告应用的数据类型。 此外,可以通过将空闲时间信号持续时间改变到最大值(当空闲时间信号持续时间减少到零时)来改变数据速率。 根据用于塑料光纤介质的一个示例性实施例,MPEG2传输流分组可以在距离为20米或甚至更远的其他介质上以54MBaud传输。