-
公开(公告)号：US4628297A
公开(公告)日：1986-12-09
申请号：US696477
申请日：1985-01-30
申请人： Seiichi Mita , Morishi Izumita , Masuo Umemoto , Yoshizumi Eto , Morito Rokuda , Hidehiro Kanada
发明人： Seiichi Mita , Morishi Izumita , Masuo Umemoto , Yoshizumi Eto , Morito Rokuda , Hidehiro Kanada
CPC分类号： G11B20/1426
摘要： In the code modulation system for converting input data levels into an output signal in the form of code words by providing M input levels among N input levels assigned to input data with stairlike code weights on the basis of the input levels, (N-M) input levels which are the difference between said N input levels and said M input levels are respectively disposed near transition points where said stairlike code weight is changed, and the code weights are provided with hysteresis in the ascent process and the descent process of the input data level.
摘要翻译： 在用于将输入数据电平转换为码字形式的输出信号的码调制系统中，通过在分配给输入数据的N个输入电平之间提供基于输入电平的阶梯式码权重的M个输入电平，（NM）输入电平 所述N个输入电平和所述M个输入电平之间的差别分别设置在所述阶梯式码权重改变的过渡点附近，并且在上升处理中的代码权重和输入数据电平的下降处理被赋予滞后。
-
公开(公告)号：US4855812A
公开(公告)日：1989-08-08
申请号：US133360
申请日：1987-12-15
IPC分类号： H04N5/45
CPC分类号： H04N5/45
摘要： A picture synthesizing apparatus in which a main picture is displayed with a part inlaid with a subsidiary picture. The apparatus includes an AGC circuit for regulating the gain of the main video signal and an AGC circuit for regulating the gain of a subsidiary video signal. Alternatively, the chrominance signal level of the subsidiary video signal can be regulated in accordance with the chrominance signal level of the main video signal.
摘要翻译： 一种图像合成装置，其中显示具有附属图像的部分的主图像。 该装置包括用于调节主视频信号的增益的AGC电路和用于调节辅助视频信号的增益的AGC电路。 或者，可以根据主视频信号的色度信号电平来调整辅助视频信号的色度信号电平。
-
3.发明授权Method of correcting errors of digital signals in the recording and reproduction of digital signals 失效在数字信号的记录和再现中校正数字信号的误差的方法
公开(公告)号：US4661956A
公开(公告)日：1987-04-28
申请号：US703917
申请日：1985-02-21
申请人： Morishi Izumita , Seiichi Mita , Masuo Umemoto , Hidehiro Kanada , Morito Rokuda
发明人： Morishi Izumita , Seiichi Mita , Masuo Umemoto , Hidehiro Kanada , Morito Rokuda
IPC分类号： G06F15/16 , G06F11/10 , G06F12/00 , G06F15/177 , G11B20/18
CPC分类号： G06F11/1076 , G06F11/1008 , G11B20/1833
摘要： Parity bits (check bits) having a relatively high redundancy are added to upper significant bits of a digital signal, and parity bits having a relatively low redundancy, are added to the lower significant bits of the digital signal. The signal and the parity bits are recorded on a recording medium. The position of an error in a data block group of the lower bits reproduced from the recording medium is estimated as existing in a block in which the error is detected by the check of the data block group of the upper bits, and in the blocks preceding and subsequent to the former.This error correction method is most suitable for a recording and reproduction system of digital video signals.
摘要翻译： 具有较高冗余度的奇偶校验位（校验位）被添加到数字信号的高有效位，并且具有较低冗余度的奇偶校验位被添加到数字信号的较低有效位。 信号和奇偶校验位被记录在记录介质上。 从记录介质再现的低位的数据块组中的误差的位置被估计为存在于通过对高位的数据块组的检查检测出错误的块中，以及在前一个块 并在之前。 该纠错方法最适用于数字视频信号的记录和再现系统。
-
公开(公告)号：US4700240A
公开(公告)日：1987-10-13
申请号：US795264
申请日：1985-11-05
申请人： Masuo Umemoto , Yoshizumi Eto , Hidehiro Kanada , Morito Rokuda
发明人： Masuo Umemoto , Yoshizumi Eto , Hidehiro Kanada , Morito Rokuda
CPC分类号： H04N5/956 , G11B20/10 , G11B20/1201 , G11B27/3027
摘要： Number data affixed to individual digital data divided into a plurality of data blocks are sequentially read out from a recording medium to be used for determining the write-in positions of the digital data in a memory. For determining the write-in positions of the digital data, the number data of the next write-in position is estimated on the basis of the number data of the current write-in position. Judgment is made as to whether or not the number of times of continuous non-coincidence between the estimated number data and the successively read-out number data exceeds a predetermined setting, and, also judgment is made as to whether or not the number data read out each time falls within a predetermined range. Depending on the results of these judgments, one of the read-out number data and the estimated number data is selected to determine the next write-in position.
摘要翻译： 从分割成多个数据块的各个数字数据附加的数字数据从记录介质中顺序地读出，以用于确定数字数据在存储器中的写入位置。 为了确定数字数据的写入位置，基于当前写入位置的数量数据来估计下一个写入位置的数字数据。 判断估计数量数据和连续读出的数字数据之间的连续不符合次数是否超过预定设定，并且还判断是否读取数字数据 每次落在预定范围内。 根据这些判断的结果，选择读出号码数据和估计号码数据之一以确定下一个写入位置。
-
5.发明授权Method of magnetically recording coded digital video signals and an apparatus therefor 失效磁记录编码数字视频信号的方法及其装置
公开(公告)号：US4670797A
公开(公告)日：1987-06-02
申请号：US702600
申请日：1985-02-19
申请人： Masuo Umenoto , Seiichi Mita , Morishi Izumita , Yuuichi Michikawa , Morito Rokuda , Hitoshi Katayama , Hidehiro Kanada
发明人： Masuo Umenoto , Seiichi Mita , Morishi Izumita , Yuuichi Michikawa , Morito Rokuda , Hitoshi Katayama , Hidehiro Kanada
CPC分类号： G11B20/1426 , H04N9/804
摘要： An improved 8-8 mpping table system in digitally and magnetically recording video signals. Video signals coded into natural binary codes consisting of 8 bits are converted into different binary codes consisting of 8 bits constituted by patterns in which a continuous number of the 1's or the 0's does not exceed a predetermined number. In these codes, the continuous number of the 1's or the 0's is so limited that a maximum magnetization interval is reduced in magnetically recording the signals. Therefore, erroneous code is prevented from occurring in reproducing the signals.
摘要翻译： 数字和磁记录视频信号的改进的8-8平台系统。 被编码为由8位组成的自然二进制码的视频信号被转换成不同的二进制码，其由8位组成，其中连续数目1或0不超过预定数。 在这些代码中，1或0的连续数被限制为在磁记录信号时最大磁化间隔减小。 因此，防止在再现信号时发生错误的代码。
-
公开(公告)号：US5063437A
公开(公告)日：1991-11-05
申请号：US344402
申请日：1989-04-28
申请人： Hitoaki Owashi , Hiroyasu Ohtsubo , Masataka Sekiya , Kohji Minabe , Hideo Nishijima , Michio Masuda , Morito Rokuda
发明人： Hitoaki Owashi , Hiroyasu Ohtsubo , Masataka Sekiya , Kohji Minabe , Hideo Nishijima , Michio Masuda , Morito Rokuda
CPC分类号： H04N9/646 , H04N9/877 , Y10S348/91
摘要： This invention relates to a method and apparatus for processing a color video signal. The processing method separates an input composite color video signal into a luminance signal and chrominance signal, demodulates the separated chrominance signal into color difference signals, stores the separated luminance signal and color difference signals in a memory, reads out the luminance signal and color differnece signals in units of 1-field period from the memory, implements the extension or reduction of the field period length alternately for every certain number of fields in reading out the luminance signal and color difference signals from the memory thereby to fix the phase relation between a residual chrominance signal component in the luminance signal read out of the memory and a chrominance signal produced by modulating the color subcarrier with the color difference signals read out of the memory, implements an intended signal processing for the readout signals, modulates the color subcarrier with processed color difference signals to produce a chrominance signal, and mixes the chrominance signal with processed luminance signal to produce a composite color video signal.
摘要翻译： 本发明涉及一种处理彩色视频信号的方法和装置。 处理方法将输入的复合彩色视频信号分离为亮度信号和色度信号，将分离的色度信号解调为色差信号，将分离的亮度信号和色差信号存储在存储器中，读出亮度信号和色差信号 以存储器的1场期间为单位，在从存储器中读出亮度信号和色差信号时，对于每一定数量的场交替地实现场周期长度的扩展或缩小，从而固定残留的相位关系 从存储器中读出的亮度信号中的色度信号分量和通过从存储器读出的色差信号调制彩色副载波产生的色度信号，对读出的信号实现预期的信号处理，用经处理的颜色调制彩色副载波 差分信号产生色度信号，以及 将色度信号与经处理的亮度信号混合，产生复合彩色视频信号。
-
公开(公告)号：US4682115A
公开(公告)日：1987-07-21
申请号：US742792
申请日：1985-06-10
申请人： Seiichi Mita , Morishi Izumita , Yuichi Michikawa , Hitoshi Katayama , Hiroshi Shiono , Hitoshi Takagi , Morito Rokuda , Nobukazu Doi
发明人： Seiichi Mita , Morishi Izumita , Yuichi Michikawa , Hitoshi Katayama , Hiroshi Shiono , Hitoshi Takagi , Morito Rokuda , Nobukazu Doi
摘要： An apparatus for regenerating original signals comprising: means for introducing a first signal that is produced as an original signal passes through a system that cuts off predetermined frequencies; a first circuit means which produces a third signal obtained on an open loop responsive to said first signal and a second signal which is regenerated from a signal of a predetermined frequency that is cut off by said system; and a second circuit means which regenerates the original signal by converting said third signal into a binary signal.
摘要翻译： 一种用于再生原始信号的装置，包括：用于引入作为原始信号产生的第一信号的装置通过切断预定频率的系统; 第一电路装置，其响应于所述第一信号产生在开环上获得的第三信号，以及从由所述系统切断的预定频率的信号再生的第二信号; 以及通过将所述第三信号转换成二进制信号来再生原始信号的第二电路装置。
-
8.发明授权
公开(公告)号：US4653052A
公开(公告)日：1987-03-24
申请号：US750513
申请日：1985-07-01
申请人： Nobukazu Doi , Morishi Izumita , Seiichi Mita , Yoshizumi Eto , Morito Rokuda
发明人： Nobukazu Doi , Morishi Izumita , Seiichi Mita , Yoshizumi Eto , Morito Rokuda
CPC分类号： H03M13/29
摘要： 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.
摘要翻译： 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。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.01 秒)
