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    DIGITAL FILTER
    1.
    发明专利
    DIGITAL FILTER 未知

    公开(公告)号：CA1146638A

    公开(公告)日：1983-05-17

    申请号：CA354771

    申请日：1980-06-25

    Applicant: MATSUSHITA ELECTRIC IND CO LTD

    Inventor： NYUJI TOMOAKI ,  KAWASAKI ITARU ,  NOGUCHI MASAHIRO ,  TSUKAMOTO MASAHIDE

    IPC: G10L13/047 ,  G10L19/06 ,  H03H17/02

    Abstract: A digital filter for a voice synthesis circuit which operates on the basis of the principle of linear predictive coading. More particularly, a digital filter of the lattice type for voice synthesis on the basis of the principle of linear predictive coading and capable of operating with a low clock frequency. Furthermore, the digital filter may use one multiplication circuit and one addition/subtraction circuit as well as containing an attenuation term element.

    2.
    发明专利
    未知

    公开(公告)号：DE3024009A1

    公开(公告)日：1981-02-26

    申请号：DE3024009

    申请日：1980-06-24

    Applicant: MATSUSHITA ELECTRIC IND CO LTD

    Inventor： NYUJI TOMOAKI ,  KAWASAKI ITARU ,  NOGUCHI MASAHIRO ,  TSUKAMOTO MASAHIDE

    IPC: G10L13/047 ,  G10L19/06 ,  H03H17/02 ,  H03K5/153

    Abstract: A digital filter for a voice synthesis circuit which operates on the basis of the principle of linear predictive coding. More particularly, a digital filter of the lattice type for voice synthesis on the basis of the principle of linear predictive coding and capable of operating with a low clock frequency. Furthermore, the digital filter may use one multiplication circuit and one addition/subtraction circuit as well as containing an attenuation term element.

    DIGITAL FILTER
    6.
    发明专利
    DIGITAL FILTER 失效

    公开(公告)号：JPS56102112A

    公开(公告)日：1981-08-15

    申请号：JP485580

    申请日：1980-01-18

    Applicant: MATSUSHITA ELECTRIC IND CO LTD

    Inventor： IRIMICHI TOMOAKI ,  KAWASAKI ITARU ,  NOGUCHI MASAHIRO ,  TSUKAMOTO KATSUHIDE

    IPC: G10L19/06 ,  H03H17/00 ,  H03H17/02

    Abstract: PURPOSE:To make it possible to exceedingly simplify the circuit construction, by using each one of multiplying circuit and adding and subtracting circuit for a digital filter which is effective when used in a voice synthesizing circuit utilizing the principle of grid-shaped linear forecast encoding. CONSTITUTION:The information of coefficient Kn is inputted into input (a) of one- step delayed circuit 100, and the output of shift register 108 is inputted into input (b) of multiplying circuit 102 through shift register 101. Then, during period T1, the output of intermittent shift register 109 is inputted, during period T2, driving signal U is inputted, and, during period T2-T20, the output of adding and substracting circuit 106 is inputted into the input of register 108. Moreover, register 109 is operated during period T11-T20-T2 and stopped during period T2-T10. The contents of latch circuit 110 is held during period T2-T20-T1 and updated when the period is shifted from T1 to T2. By this, the circuit construction is exceedingly simplified.

    Digital magnetic recording and reproducing device
    9.
    发明专利
    Digital magnetic recording and reproducing device 失效
    数字磁记录和再现设备

    公开(公告)号：JPS5758224A

    公开(公告)日：1982-04-07

    申请号：JP13405880

    申请日：1980-09-25

    Applicant: Matsushita Electric Ind Co Ltd

    Inventor： SUGITA TAKUYA ,  NOGUCHI MASAHIRO

    IPC: H03M5/04 ,  G11B20/10 ,  G11B20/20 ,  H03K5/00

    CPC classification number: G11B20/20

    Abstract: PURPOSE:To prevent a read error caused by skew, by detecting a head pulse output signal of each word, after that, sampling a pulse output signal of each track at prescribed intervals for a constant time, and comparing the number of times of ''1'' with a reference value. CONSTITUTION:A head pulse output signal of each word is detected by a controlling circuit 1, and after that, a counting signal C and a discriminating signal (d) are outputted at a pulse interval being much shorter than the minimum pulse width of a read-out output signal, and also for a constant time being longer than the sum of the minimum pulse width of the read-out pulse output signal and the minimum skew time. In counting circuits 2-4, read-out pulse signals b0-b1 from each track are sampled by the counting signal (c), and the number of times of ''1'' is counted, respectively. According to such a constitution, a pulse train output time of the counting signal (c) is longer than a time which has added the minimum pulse width of the read-out pulse output signal from each track, and the maximum skew time, therefore, a read error caused by skew is prevented.

    Abstract translation: 目的：为了防止由偏斜引起的读取错误，通过检测每个字的头脉冲输出信号，之后，以规定的间隔对每个磁道的脉冲输出信号进行恒定时间采样，并比较“ 1“与参考值。 构成：由控制电路1检测每个字的头脉冲输出信号，然后以比读取的最小脉冲宽度短的脉冲间隔输出计数信号C和鉴别信号（d） 输出信号，并且还具有比读出脉冲输出信号的最小脉冲宽度和最小偏斜时间之和长的恒定时间。 在计数电路2-4中，通过计数信号（c）对每个磁道的读出脉冲信号b0-b1进行采样，并分别对“1”的次数进行计数。 根据这样的结构，计数信号（c）的脉冲序列输出时间比添加了来自各轨道的读出脉冲输出信号的最小脉冲宽度和最大偏斜时间的时间长， 阻止了由偏斜引起的读取错误。

    VOICE MESSAGE TRANSMITTER DEVICE
    10.
    发明专利
    VOICE MESSAGE TRANSMITTER DEVICE 失效

    公开(公告)号：JPS56157158A

    公开(公告)日：1981-12-04

    申请号：JP6089180

    申请日：1980-05-07

    Applicant: MATSUSHITA ELECTRIC IND CO LTD

    Inventor： TSUGA KAZUHIRO ,  NOGUCHI MASAHIRO

    IPC: H04L23/00 ,  H03M5/00 ,  H04M11/00

    Abstract: PURPOSE:To obtain a message transmitter device which transmits a voice message corresponding to a code through a voice producing device of the receiver side, by deciding previously the code corresponding to each message to be transmitted and then transmitting the code via a communication line. CONSTITUTION:An optional signal is selected through a selecting means 1 among the signals corresponding to the several kinds of specified messages to be prepared and transmitted. With push of a switch A of the means 1, the signal is converted into the corresponding code 00 through an encoder 2 to be modulated at a transmission part 3 and then received at a remote reception part 5 via a communication circuit 4 to be demodulated. The demodulated coded signal 00 is converted into a corresponding message indication signal through a decoder 6. Then a voice producing device 7 produces a message in accordance with the input of the indication signal.

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