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Manual input unit

  • US 5,982,354 A
  • Filed: 12/19/1997
  • Issued: 11/09/1999
  • Est. Priority Date: 12/19/1996
  • Status: Expired due to Term
First Claim
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1. A manual input unit comprising:

  • an actuator section movably supported in a frame;

    a generator section associated with said actuator section, to output a voltage which corresponds to a movement of said actuator section on said frame;

    a signal transmission section associated with said generator section, to transmit a data signal which corresponds to an output-voltage value of said generator section to an external processing unit;

    said generator section including a switching means which is closed when said actuator section is in a reference position and is opened when said actuator section is away from said reference position, and a generating means for generating a voltage linearly corresponding to a displacement of said actuator section from said reference position, said switching means and said generating means being connected, in parallel, to said signal transmission section; and

    said signal transmission section being provided for defining, on the basis of a voltage generated from said generating means at an instant when said actuator section departs from said reference position to open said switching means, a voltage subsequently generated from said generating means while said switching means is in an opened state as said output-voltage value of said generator section, and for selecting data corresponding to said defined output-voltage value from stored data in accordance with a predetermined relationship to transmit said selected data as said data signal.

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