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84 条记录 (耗时 0.026 秒)

    Signal processing device
    53.
    发明授权
    Signal processing device 失效
    信号处理装置

    公开(公告)号：US06374035B1

    公开(公告)日：2002-04-16

    申请号：US08511740

    申请日：1995-08-07

    申请人： Shinichi Yamashita

    发明人： Shinichi Yamashita

    IPC分类号： H04N5923

    CPC分类号： H04L25/497 ,  G11B20/10009

    摘要： A device is arranged to detect the level of an input digital signal by detecting a specific pattern from the input digital signal and to control the level of the input digital signal according to a result of the level detection. The arrangement enables the device to accurately detect the amplitude of a reproduced signal obtained at the detecting point of data which has the specific pattern, to keep the level of the reproduced signal unvarying at the data detecting point and to lessen errors of reproduced data.

    摘要翻译： 设备被配置为通过从输入数字信号检测特定模式来检测输入数字信号的电平，并且根据电平检测的结果来控制输入数字信号的电平。 该装置能够准确地检测在具有特定模式的数据的检测点处获得的再现信号的幅度，以保持在数据检测点不变的再现信号的电平并减少再现数据的误差。

    Signal processor with a plurality of kinds of processors and a shared memory accessed through a versatile control means
    54.
    发明授权
    Signal processor with a plurality of kinds of processors and a shared memory accessed through a versatile control means 失效
    具有多种处理器的信号处理器和通过通用控制装置访问的共享存储器

    公开(公告)号：US06330644B1

    公开(公告)日：2001-12-11

    申请号：US08547805

    申请日：1995-10-25

    申请人： Shinichi Yamashita ,  Kazuhiko Haruma

    发明人： Shinichi Yamashita ,  Kazuhiko Haruma

    IPC分类号： G06F1300

    CPC分类号： H04N19/436 ,  H04N19/42 ,  H04N19/423 ,  H04N19/61 ,  H04N21/426 ,  H04N21/42607 ,  H04N21/42692 ,  H04N21/4435

    摘要： A signal processor comprises a plurality of processing circuits for carrying out various kinds of processing which differ from one another; a memory circuit provided commonly for respective processing circuits, and a control circuit for carrying out access control between the respective processing circuits and the memory circuit, characterized in that the control circuit carries out address control in different units in accordance with the respective processing circuits. Alternatively, the address control can reflect the different processing priority of different types of data. The processing circuits may be image data I/O means, audio data processing means, encoding/decoding means, error correction means and encoded data I/O means.

    摘要翻译： 信号处理器包括用于执行彼此不同的各种处理的多个处理电路; 用于各个处理电路共同设置的存储电路，以及用于在各个处理电路和存储电路之间执行访问控制的控制电路，其特征在于控制电路根据各个处理电路以不同的单元进行地址控制。 或者，地址控制可以反映不同类型数据的不同处理优先级。 处理电路可以是图像数据I / O装置，音频数据处理装置，编码/解码装置，纠错装置和编码数据I / O装置。

    Reproducing apparatus having clock generator controlled by detected phase-difference and tendency of phase-difference
    55.
    发明授权
    Reproducing apparatus having clock generator controlled by detected phase-difference and tendency of phase-difference 失效
    具有通过检测到的相位差和相位差倾向控制的时钟发生器的再现装置

    公开(公告)号：US6097560A

    公开(公告)日：2000-08-01

    申请号：US512801

    申请日：1995-08-09

    申请人： Yasuyuki Tanaka ,  Shinichi Yamashita

    发明人： Yasuyuki Tanaka ,  Shinichi Yamashita

    IPC分类号： G11B5/008 ,  G11B5/09 ,  G11B20/10 ,  G11B20/14 ,  H03L7/06 ,  H03L7/093 ,  H03L7/113

    CPC分类号： H03L7/093 ,  G11B20/10 ,  G11B20/1403 ,  H03L7/113 ,  G11B5/0086 ,  G11B5/09

    摘要： An apparatus for generating a clock signal phase-synchronized with an input signal includes phase-difference detecting circuitry for detecting a phase difference between an input signal and a clock signal phase-synchronized with the input signal, detecting circuitry for detecting a tendency of an output of the phase-difference detecting circuitry and outputting a signal indicative of the tendency, and adder for adding together an output of the detecting means and the output of the phase-difference detecting circuitry, and an oscillator for receiving an output of the adder and outputting as the clock signal a signal having a frequency corresponding to the output of the adder.

    摘要翻译： 用于产生与输入信号相位同步的时钟信号的装置包括相位差检测电路，用于检测输入信号和与输入信号相位同步的时钟信号之间的相位差，用于检测输出趋势的检测电路 并输出表示该趋势的信号，以及加法器，用于将检测装置的输出和相位差检测电路的输出相加，以及用于接收加法器的输出并输出的振荡器 作为时钟信号，具有对应于加法器的输出的频率的信号。

    Error correcting apparatus
    56.
    发明授权
    Error correcting apparatus 失效
    纠错装置

    公开(公告)号：US5631914A

    公开(公告)日：1997-05-20

    申请号：US396267

    申请日：1995-02-28

    申请人： Motokazu Kashida ,  Akihiro Shikakura ,  Shinichi Yamashita ,  Tetsuya Shimizu

    发明人： Motokazu Kashida ,  Akihiro Shikakura ,  Shinichi Yamashita ,  Tetsuya Shimizu

    IPC分类号： H03M13/29 ,  G06F11/10

    CPC分类号： H03M13/159 ,  H03M13/1515 ,  H03M13/29 ,  H03M13/2909 ,  H03M13/2927

    摘要： An error correcting apparatus including a syndrome calculator for calculating syndromes from input data added with an error correction code, a data memory which is connected in parallel with the syndrome calculator for storing the input data, a syndrome memory to store syndromes calculated by the syndrome calculator, and an error correction processor for executing error correction of the data in the data memory by using the syndromes stored in the syndrome memory. The error correction code is provided in both first and second directions when data is two-dimensionally arranged, and the error correction processor obtains values in which the result of an arithmetic operation for error correction in at least one of the first and second directions is added to syndromes in the other direction. An error position within the input data is detected and corrected again on the basis of the values.

    摘要翻译： 一种误差校正装置，包括：校正子计算器，用于从添加有纠错码的输入数据计算综合征;数据存储器，其与用于存储输入数据的校正子计算器并联连接;校正子存储器，用于存储由校正子计算器计算出的综合征 以及错误校正处理器，用于通过使用存储在所述校正子存储器中的校正子来执行数据存储器中的数据的错误校正。 当数据被二维布置时，纠错码在第一和第二方向都被提供，并且纠错处理器获得在第一和第二方向中的至少一个方向上添加用于纠错的算术运算的结果的值 到另一个方向的综合征。 基于这些值，再次检测和校正输入数据内的错误位置。

    Digital information restoring device including period detector
    57.
    发明授权
    Digital information restoring device including period detector 失效
    数字信息恢复装置，包括周期检测器

    公开(公告)号：US5623376A

    公开(公告)日：1997-04-22

    申请号：US233536

    申请日：1994-04-26

    申请人： Shingo Ikeda ,  Shinichi Yamashita

    发明人： Shingo Ikeda ,  Shinichi Yamashita

    IPC分类号： G11B20/14 ,  G11B20/22 ,  G11B27/32 ,  G11B5/09 ,  G11B20/16

    CPC分类号： G11B20/1419 ,  G11B27/323 ,  G11B20/225

    摘要： A digital information restoring device is arranged to detect time between level transition points of a digital signal which indicates digital information by means of variations in its period, output the resultant period data, calculate an average value of at least two period data among the output period data, and compare the average value with the aforesaid period data, and restore the digital information. The digital information restoring device is, therefore, capable of restoring the digital information at a high speed without using a high-speed PLL circuit or the like. The digital information restoring device may also be arranged to perform time-axis expansion of only part of the received period data, and input the resultant period data to a computing circuit to restore the digital information.

    摘要翻译： 数字信息恢复装置被配置为通过其周期的变化来检测指示数字信息的数字信号的电平转变点之间的时间，输出合成周期数据，计算输出周期中的至少两个周期数据的平均值 数据，并将平均值与上述周期数据进行比较，并恢复数字信息。 因此，数字信息恢复装置能够在不使用高速PLL电路等的情况下高速恢复数字信息。 数字信息恢复装置还可以被布置为仅执行接收的周期数据的一部分的时间轴扩展，并将合成的周期数据输入到计算电路以恢复数字信息。

    Information signal recording apparatus for recording pilot signals on particular areas
    59.
    发明授权
    Information signal recording apparatus for recording pilot signals on particular areas 失效
    用于在特定区域上记录导频信号的信息信号记录装置

    公开(公告)号：US5177649A

    公开(公告)日：1993-01-05

    申请号：US594956

    申请日：1990-10-10

    申请人： Makoto Iwakami ,  Shinichi Yamashita

    发明人： Makoto Iwakami ,  Shinichi Yamashita

    IPC分类号： H04N5/7826 ,  G11B5/588 ,  G11B15/467

    CPC分类号： G11B15/4677

    摘要： An information signal recording apparatus, which includes a pilot signal generator for generating a tracking control pilot signal having a predetermined frequency, a generator for generating an information signal to be recorded, and a recorder for recording the pilot signal on a first area of a recording track, and for recording the information signal on a second area of the recording track. A component of the predetermined frequency of the pilot signal is made to be smaller in a leading portion and in an ending portion of the first area than in other portions of the first area.

    摘要翻译： 一种信息信号记录装置，包括用于产生具有预定频率的跟踪控制导频信号的导频信号发生器，用于产生要记录的信息信号的发生器和用于将导频信号记录在记录的第一区域上的记录器 轨道，并用于在记录轨道的第二区域上记录信息信号。 导频信号的预定频率的分量在第一区域的前导部分和结束部分中比在第一区域的其他部分小。