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Small electronic apparatus with optical input device

  • US 4,671,671 A
  • Filed: 06/10/1985
  • Issued: 06/09/1987
  • Est. Priority Date: 06/18/1984
  • Status: Expired due to Term
First Claim
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1. A small electronic apparatus with an optical input device comprising:

  • an appratus case for housing a main body therein, said apparatus case including a light-transmitting member at least a part of which is exposed to the outside light;

    an electrooptical display device arranged to oppose said light-transmitting member in said apparatus case;

    photosensor means including a plurality of photosensors arranged in said apparatus case at a position between said electrooptical display device and said light-transmitting member;

    input position detection means for generating an input position signal indicative of a detected input position by identifying the photosensor from among said plurality of photosensors having the lowest output among the outputs of said plurality of photosensors when at least some light transmitted into at least one photosensor of said plurality of photosensors is interrupted;

    logic circuit means including means for receiving and processing the input position signal generated by said input position detection means; and

    means coupled to said logic circuit means for providing a display signal to said electrooptical display device.

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