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Operation inputting apparatus

  • US 5,680,154 A
  • Filed: 05/24/1995
  • Issued: 10/21/1997
  • Est. Priority Date: 05/25/1994
  • Status: Expired due to Term
First Claim
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1. An operation inputting apparatus for generating a cursor control signal used to control the position of a cursor on a display screen, the apparatus comprising:

  • an operation member;

    a pressure detection sensor connected to the operation member for detecting a load force applied to said operation member, and for generating a detector signal having a voltage level which is related to the detected load force;

    an analog to digital converter for converting the detector signal into digital data;

    a comparison circuit for comparing the digital data with a preset load value, and for generating a comparison result having a first value when the digital data is greater than the preset load value, and a second value when the digital data is less than the preset load value;

    a timer circuit for generating a timing value, the timing value being increased when the comparison result has the first value, and the timing value being decreased when the comparison result has the second value;

    output judgment level setting means for generating a judgment signal, wherein the judgment signal is at a first level when the timing value is less than a predetermined time, and the judgement signal is at a second level when the timing value is greater than the predetermined time; and

    a processor for comparing the digital data with the judgement signal, for generating a cursor control signal having a first value when the digital data is greater than the judgement signal, and for generating a cursor control signal which has a second value when the digital data is less than the judgement signal.

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