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22 条记录 (耗时 0.02 秒)

    Decision feedback equalization circuit
    1.
    发明授权
    Decision feedback equalization circuit 失效
    决策反馈均衡电路

    公开(公告)号：US5594756A

    公开(公告)日：1997-01-14

    申请号：US492616

    申请日：1995-06-20

    申请人： Wataru Sakurai ,  Hideki Sawaguchi ,  Naoki Satoh ,  Masuo Umemoto

    发明人： Wataru Sakurai ,  Hideki Sawaguchi ,  Naoki Satoh ,  Masuo Umemoto

    IPC分类号： G11B20/10 ,  H04B1/10 ,  H04B3/06 ,  H04B3/08 ,  H04L25/03 ,  H03H7/30

    CPC分类号： H04L25/03057 ,  G11B20/10009 ,  G11B20/10046

    摘要： A decision feedback equalization circuit which can be operated at a high speed with a low cost as well as a high-speed digital data communication system and a high-speed digital data recording system using the equalization circuit are disclosed. The decision feedback equalization circuit has data memories which correspond to the number of available values in decision result and in which feedback signals corresponding to all the next decision results are previously prepared as candidates so that a suitable one of the feedback signal candidates is selected and fed back based on the obtained decision result, thus realizing high-speed operation of a feedback loop.

    摘要翻译： 公开了一种能够以低成本高速运行的判决反馈均衡电路以及使用均衡电路的高速数字数据通信系统和高速数字数据记录系统。 判决反馈均衡电路具有数据存储器，其对应于判定结果中可用值的数量，并且其中预先对应于所有下一个判定结果的反馈信号作为候选，使得选择并馈送合适的一个反馈信号候选 基于获得的决策结果，从而实现反馈回路的高速运行。

    Digital write-and-read method and signal processing apparatus
    2.
    发明授权
    Digital write-and-read method and signal processing apparatus 失效
    数字写入读取方法和信号处理装置

    公开(公告)号：US5881071A

    公开(公告)日：1999-03-09

    申请号：US812286

    申请日：1997-03-06

    申请人： Alexander Kuznetsov ,  Masuo Umemoto ,  Naoya Kobayashi ,  Hideki Sawaguchi

    发明人： Alexander Kuznetsov ,  Masuo Umemoto ,  Naoya Kobayashi ,  Hideki Sawaguchi

    IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  H03M13/25 ,  G06F11/00

    CPC分类号： G11B20/10009 ,  G11B20/1833

    摘要： A digital write-and-read method and a signal processing apparatus wherein a write encoder includes a bit distribution circuit for dividing an input data block into n (n: 2 or more) series of bit strings and outputting them in parallel, a first coding circuit for executing predetermined coding for each of data series so distributed and a second coding circuit for converting the output bit series D1 to D3 of the first coding circuit to an n-bit channel code by looking up the previous channel code information, and wherein the second coding circuit executes coding by using a combination having a large Euclidean distance in a partial response equalization output taking inter-symbol interference of at least three bits into consideration as a pair.

    摘要翻译： 一种数字写入读取方法和信号处理装置，其中写入编码器包括一个位分配电路，用于将输入数据块分成n（n：2或更多）个位串并将它们并行输出;第一编码 用于对分配的数据序列中的每一个执行预定编码的电路和用于通过查找先前的信道码信息将第一编码电路的输出比特串D1至D3转换为n比特信道码的第二编码电路，并且其中， 第二编码电路在部分响应均衡输出中使用具有较大欧几里德距离的组合来执行编码，以至少考虑三比特的符号间干扰作为一对。

    Code modulation system
    3.
    发明授权
    Code modulation system 失效
    码调制系统

    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

    IPC分类号： H04L25/49 ,  G11B20/14 ,  H04N5/91 ,  H04N5/92 ,  H03K13/24 ,  G11B5/09

    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。

    Method of correcting errors of digital signals in the recording and reproduction of digital signals
    5.
    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。

    Color imaging device
    6.
    发明授权
    Color imaging device 失效
    彩色成像装置

    公开(公告)号：US4467347A

    公开(公告)日：1984-08-21

    申请号：US346195

    申请日：1982-02-05

    申请人： Naoki Ozawa ,  Shusaku Nagahara ,  Kenji Takahashi ,  Masuo Umemoto ,  Kazuhiro Sato ,  Morishi Izumita ,  Toshiyuki Akiyama ,  Masanori Sato ,  Koji Kudo

    发明人： Naoki Ozawa ,  Shusaku Nagahara ,  Kenji Takahashi ,  Masuo Umemoto ,  Kazuhiro Sato ,  Morishi Izumita ,  Toshiyuki Akiyama ,  Masanori Sato ,  Koji Kudo

    IPC分类号： H04N9/07 ,  H04N9/04

    CPC分类号： H04N9/04 ,  H04N9/045

    摘要： The present invention relates to a color imaging device which suppresses false color signals appearing in an area where the difference of brightnesses is great in the horizontal or vertical direction.When the correlation between picture elements adjacent in the vertical direction is little and the false signal appears in a boundary part in the vertical direction, the false signal is detected, whereupon a color signal is demodulated by utilizing the correlation between the signals of picture elements in the horizontal direction. On the other hand, when the correlation between picture elements adjacent in the horizontal direction is little and the false signal appears in a boundary part in the horizontal direction, the false signal is detected, whereupon a color signal is demodulated by utilizing the correlation between the signals of picture elements in the vertical direction.As a result, the moire phenomenon attributed to the false color signals can be conspicuously reduced.While embodiments of the present invention refer to color imaging devices which employ MOS type solid-state imaging devices, the invention is also applicable to an imaging device which employs CCDs and a color image pickup tube which separates colors by means of a mosaic color filter.

    摘要翻译： 本发明涉及一种彩色成像装置，其抑制在水平或垂直方向上亮度差大的区域中出现的伪色信号。 当在垂直方向相邻的图像元素之间的相关性较小并且在垂直方向上的边界部分中出现假信号时，检测到伪信号，由此利用彩色信号中的图像元素的信号之间的相关性来解调彩色信号 水平方向。 另一方面，当在水平方向上相邻的图像元素之间的相关性较小并且在水平方向上出现边界部分的假信号时，检测到伪信号，从而通过利用 图像元素在垂直方向上的信号。 结果，归结于虚假颜色信号的莫尔色现象可以明显减少。 虽然本发明的实施例涉及使用MOS型固态成像装置的彩色成像装置，但是本发明也可应用于采用CCD的成像装置和通过马赛克滤色器分离颜色的彩色图像拾取管。

    Digital signal recording and reproducing system having an interface for dubbing a color television signal in the component form
    8.
    发明授权
    Digital signal recording and reproducing system having an interface for dubbing a color television signal in the component form 失效
    数字信号记录和再现系统具有用于以组件形式转录彩色电视信号的接口

    公开(公告)号：US4791495A

    公开(公告)日：1988-12-13

    申请号：US862639

    申请日：1986-05-13

    申请人： Masuo Umemoto ,  Yoshizumi Eto ,  Shinichi Miyazaki ,  Hidehiro Kanada ,  Hitoshi Katayama ,  Yuichi Michikawa

    发明人： Masuo Umemoto ,  Yoshizumi Eto ,  Shinichi Miyazaki ,  Hidehiro Kanada ,  Hitoshi Katayama ,  Yuichi Michikawa

    IPC分类号： G11B5/86 ,  H04N9/80 ,  H04N9/804 ,  H04N9/808 ,  H04N9/79

    CPC分类号： H04N9/804 ,  G11B5/86 ,  H04N19/436 ,  H04N19/439

    摘要： A digital recording and reproducing system wherein luminance signals digitized and converted into the low speed signals and chrominance signals digitized at the time of recording are distributed among a plural number of channels and the signals of the plural number of channels are recorded respectively on a recording medium. At the time of the reproduction, the signals of the plural number of the channels are reproduced respectively from the recording medium and combined to form the luminance signals and the chrominance signals respectively. The luminance signals in the combined signal are converted into a high speed signal and output terminals for outputting dubbing signals from the system for dubbing the signals are led. The output side of a low speed-to-high speed converter and a channel combination circuit.

    摘要翻译： 一种数字记录和再现系统，其中数字化并转换成低速信号的亮度信号和在记录时被数字化的色度信号分配在多个通道中，并且将多个通道的信号分别记录在记录介质上 。 在再现时，多个通道的信号分别从记录介质再现，并被组合以分别形成亮度信号和色度信号。 组合信号中的亮度信号被转换成高速信号，并且用于输出用于转录信号的系统的用于输出转录信号的输出端子被引导。 低速到高速转换器的输出侧和通道组合电路。

    Method and apparatus for generating error correction codes for digitized picture signal recording/reproducing
    9.
    发明授权
    Method and apparatus for generating error correction codes for digitized picture signal recording/reproducing 失效
    用于产生用于数字化图像信号记录/再现的纠错码的方法和装置

    公开(公告)号：US4698811A

    公开(公告)日：1987-10-06

    申请号：US756706

    申请日：1985-07-19

    申请人： Yoshizumi Eto ,  Masuo Umemoto ,  Hidehiro Kanada ,  Seiichi Mita

    发明人： Yoshizumi Eto ,  Masuo Umemoto ,  Hidehiro Kanada ,  Seiichi Mita

    IPC分类号： G11B20/18 ,  H03M13/00 ,  H03M13/09 ,  H03M13/35 ,  H04N5/92 ,  H04N5/926 ,  H04N5/945 ,  G06F11/12

    CPC分类号： H03M13/00 ,  G11B20/1809 ,  H03M13/09 ,  H03M13/35 ,  H04N5/926 ,  H04N5/945

    摘要： An apparatus for recording or reproducing codes resulting from digitalizing a picture signal on or from a video tape recorder includes a device for correcting code error produced due to interference in the course of recording or reproducing process. The pixel codes succeeding to one another in time are divided to high-order and low-order bit-blocks, respectively, wherein the high-order bits are used to constitute a pseudo pixel code which is then added with a pixel error correcting code. The pixel code consisting of the high-order bits is added with a bit error correcting code before being recorded. In reproduction, error correction can be realized at higher rate with the aid of the correction codes to improve the quality of reproduced picture.

    摘要翻译： 用于记录或再现由视频磁带录像机上的图像信号数字化所产生的代码的装置包括用于在记录或再现处理过程中纠正由于干扰而产生的码错误的装置。 在时间上彼此相继的像素码分别被分割为高阶位和低位位块，其中高阶位用于构成伪像素码，然后加上像素误差校正码。 由高位构成的像素码在记录之前加上位纠错码。 在再现中，借助于校正码可以以更高的速率实现纠错，以提高再现画面的质量。