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    • 5. 发明授权
    • Method for decoding double-encoding codes and apparatus using the same
    • 用于对双重编码码进行解码的方法及使用其的装置
    • US4653052A
    • 1987-03-24
    • US750513
    • 1985-07-01
    • Nobukazu DoiMorishi IzumitaSeiichi MitaYoshizumi EtoMorito Rokuda
    • Nobukazu DoiMorishi IzumitaSeiichi MitaYoshizumi EtoMorito Rokuda
    • G06F11/10H03M13/27H03M13/29
    • H03M13/29
    • The present invention relates to a method and an apparatus for decoding double-encoding codes in which the information to be decoded comprises a first data and a second data. The operation for decoding double-encoding codes is achieved through two stages. A decoder of the first stage checks the first data, and when an error is found in the first data, all symbols of the first data are assumed to be wrong. The first-stage decoder then adds an erasure flag to all symbols to generate erasure symbols. As a result, these erasure symbols include the symbols which are actually erroneous and those which are correct. A decoder of the second stage is used to perform an error correction on the second data. For this purpose, the second-stage decoder detects the number of erasure symbols which are contained in the second data and which are actually erroneous. If the number of actually erroneous symbols does not exceed the maximum number of correctable symbols which can be corrected by the decoder of the second stage, the error correction is effected; otherwise, the decoder detects an error without conducting the error correction.
    • 本发明涉及一种用于解码双重编码码的方法和装置,其中待解码的信息包括第一数据和第二数据。 双编码解码操作通过两个阶段实现。 第一级的解码器检查第一数据,并且当在第一数据中发现错误时,假定第一数据的所有符号是错误的。 然后,第一级解码器将擦除标志添加到所有符号以产生擦除符号。 结果,这些擦除符号包括实际上是错误的符号和正确的符号。 第二级的解码器用于对第二数据执行纠错。 为此,第二级解码器检测包含在第二数据中并且实际上是错误的擦除符号的数量。 如果实际错误符号的数量不超过可由第二级的解码器校正的可校正符号的最大数目,则进行纠错; 否则,解码器在不进行纠错的情况下检测到错误。
    • 6. 发明授权
    • Bidirectional digital signal transmission system and repeater for the same
    • 双向数字信号传输系统和中继器相同
    • US06345390B1
    • 2002-02-05
    • US08877560
    • 1997-06-17
    • Yoshizumi EtoNobuo Murata
    • Yoshizumi EtoNobuo Murata
    • H04N7173
    • H04N7/141H04N5/23203H04N7/142H04N7/147H04N7/181
    • A bidirectional digital signal transmission system includes a transmission line, and video instruments respectively connected to both ends of the transmission line. In each of the video instruments, a digitized signal is multiplexed on a time division basis and compressed in a time base, thereby generating a transmission signal constituted by repetition of a signal period and a quiescent period. The transmission signal generated by one of the video instruments is transmitted during the quiescent period of the transmission signal generated by another one of the video instruments, thereby realizing bidirectional digital signal transmission. The system further includes a repeater circuit inserted in the transmission line at an intermediate location thereof to compensate for deterioration of the signal occurring during transmission over the transmission line. The repeater circuit includes a switch device for preventing a transmission signal feedback loop from being formed in the repeater circuit.
    • 双向数字信号传输系统包括传输线和分别连接到传输线两端的视频仪器。 在每个视频乐器中,数字化信号以时分方式被复用并按时基进行压缩,由此产生由重复信号周期和静止周期构成的发送信号。 由视频乐器之一产生的发送信号在由另一个视频乐器生成的发送信号的静止期间发送,从而实现双向数字信号的发送。 该系统还包括在其中间位置处插入传输线中的中继器电路,以补偿在传输线上传输期间发生的信号的恶化。 中继器电路包括用于防止在中继器电路中形成发送信号反馈回路的开关装置。
    • 9. 发明授权
    • Method of encoding and multiplexing picture signals and apparatus
utilizing the same
    • 编码和复用图像信号的方法及其利用方法
    • US5500676A
    • 1996-03-19
    • US278239
    • 1994-07-21
    • Takayuki TanakaRyu WatanabeYuuichi OonamiYoshizumi Eto
    • Takayuki TanakaRyu WatanabeYuuichi OonamiYoshizumi Eto
    • H04N19/102H04N7/08H04N7/081H04N7/58H04N19/00H04N19/126H04N19/152H04N19/154H04N19/423H04N19/503H04N19/51H04N19/61H04N19/625H04N19/70H04N19/91H04N7/12
    • H04N21/2365H04N19/126H04N19/147H04N19/152H04N19/184H04N19/60H04N21/23406H04N21/234354H04N21/2662H04N19/146
    • A picture signal encoding multiplexing method and apparatus in which encoded data of a plurality of picture signals, which are respectively output from a plurality of picture signal encoding processing units, is multiplexed in a channel multiplexing unit. The method includes the steps of: generating a transmission rate control signal corresponding to information related to the encoded distortion supplied from each of picture signal encoding processing units in a channel multiplexing unit, and supplying the transmission rate control signal to each of the picture signal encoding processing units; and outputting the encoded data of the picture signal from each of the picture signal encoding processing units in accordance with the transmission rate control signal. The apparatus includes a unit provided in channel multiplexing unit for generating a transmission rate control signal corresponding to information relating to encoded distortion supplied from each picture signal encoding processing unit and for supplying the transmission rate control signal to each of the picture signal encoding processing units; and a unit for outputting, from each of the picture signal encoding processing units, the encoded data of the associated picture signal in accordance with the transmission rate control signal.
    • 一种图像信号编码复用方法和装置,其中分别从多个图像信号编码处理单元输出的多个图像信号的编码数据被多路复用在信道复用单元中。 该方法包括以下步骤:产生与频道复用单元中的每个图像信号编码处理单元所提供的与编码失真相关的信息相对应的传输速率控制信号,并将传输速率控制信号提供给每个图像信号编码 加工单位; 并且根据传输速率控制信号从每个图像信号编码处理单元输出图像信号的编码数据。 该装置包括:设置在信道复用单元中的单元,用于生成对应于与每个图像信号编码处理单元提供的编码失真有关的信息的传输速率控制信号,并将传输速率控制信号提供给每个图像信号编码处理单元; 以及用于根据传输速率控制信号从每个图像信号编码处理单元输出相关联的图像信号的编码数据的单元。