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    INFORMATION PROCESSOR
    71.
    发明专利
    INFORMATION PROCESSOR 失效

    公开(公告)号：JPS60136821A

    公开(公告)日：1985-07-20

    申请号：JP24402583

    申请日：1983-12-26

    Applicant: HITACHI LTD

    Inventor： MATSUOKA SHIGERU ,  MATSUOKA SHINJI

    IPC: G06F3/06

    Abstract: PURPOSE:To stabilize the reading and writing operation of data by providing the titled device with a program for executing only head cleaning and starting the program through a specific input means. CONSTITUTION:The function of a program memory 12 is checked by a program built in a boot ROM11 at the ON of a power supply, and then the operation is shifted to system operation processing. If head cleaning is keyed during said operation, the deck No. and the number of times of execution are set up and a cleaning floppy is set up. Said operation is repeated until the number of head reciprocations for head cleaning reaches a set value.

    AUTOMATIC SWITCHING DEVICE
    72.
    发明专利
    AUTOMATIC SWITCHING DEVICE 失效

    公开(公告)号：JPS6086618A

    公开(公告)日：1985-05-16

    申请号：JP19416983

    申请日：1983-10-19

    Applicant: HITACHI LTD

    Inventor： MATSUOKA SHIGERU

    IPC: G06F13/00 ,  G06F3/00 ,  G06F3/02 ,  G06F17/21

    Abstract: PURPOSE:To switch automatically connection to a printer well by providing time counting circuits to which times longer than repeat times of output signals of information processing devices and selecting the information processing device which triggers first these time counting circuits. CONSTITUTION:A switching circuit 19 is provided with data storage circuits 41 and 42, a transmission data discriminating circuit consisting of comparing circuits 43 and 44 and OR circuits 45-47, and time counting circuits 27 and 28 consisting of monostable multivibrators to which times longer than data transmission intervals of information processing devices 17 and 18 are set. Circuits 27 and 28 are triggered by a data transmission timing to select automatically, for example, the device 17 by operations of circuits 27 and 28. With respect to switching to the other device 18, the values of data of circuits 41 and 42 are compared with a preliminarily set value by the transmission data discriminating circuit when operations of circuits 27 and 28 are interrupted, and selection is performed again. Thus, devices 17 and 18 are switched automatically and are connected to a printer 9 well.

    INPUT DEVICE
    75.
    发明专利
    INPUT DEVICE 失效

    公开(公告)号：JPS58144938A

    公开(公告)日：1983-08-29

    申请号：JP2733582

    申请日：1982-02-24

    Applicant: HITACHI LTD

    Inventor： MATSUOKA SHIGERU

    IPC: G06F3/023 ,  H03K17/62 ,  H03M11/20

    Abstract: PURPOSE:To decrease the number of cables of signal lines to be connected, by making a constitution optimum for both an input discriminating means which extracts an ON area out of a 2-make points/3-electrode group and an input control circuit which controls said input means. CONSTITUTION:The 1st decoder circuit 8 is selected when an X-Y enable signal 18 is set at a low level. In the same way, the output 26 of a counter 14 corresponds to 2 -2 bits and are fed to buffers 92-a-92-d. In addition, the output of an inverter 15 is supplied as an output enable signal of the corresponding buffer. In other words, the 2nd decoder circuit 9 is selected when the signal 18 is set at a high level. Under such conditions of connection, a clock 28 is supplied, and the signal 18 is switched to just extract an ON points.

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