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Photodetector, photosensing position detector, coordinate input device, coordinate input/output apparatus, and photodetection method

  • US 6,740,860 B2
  • Filed: 11/23/2001
  • Issued: 05/25/2004
  • Est. Priority Date: 12/06/2000
  • Status: Expired due to Fees
First Claim
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1. A photodetector comprising:

  • photoreceiving means for receiving a light beam that blinks a plurality of times per detection period and for converting the received light beam into an output signal; and

    signal processing and controlling means for controlling the photoreceiving means so that the output signal, that is output in response to the received light beam per blinking cycle of the light beam, increases in strength as a blinking cycle count, increases in each detection period.

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