Optical data reproduction apparatus

  • US 6,304,530 B1
  • Filed: 06/06/2000
  • Issued: 10/16/2001
  • Est. Priority Date: 06/07/1999
  • Status: Expired due to Term
First Claim
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1. An optical data reproduction apparatus comprising:

  • a light-receiving element for optically reading out data on a recording medium, the light receiving element on which a first pair of light-receiving cells and a second pair of light-receiving cells are diagonally arranged to constitute a quadrifid light-receiving cells;

    a pair of first wiring patterns respectively connected to the first pair of light-receiving cells for leading out output signals therefrom to form a first added signal in which the output signals are added;

    a pair of second wiring patterns respectively connected to the second pair of light-receiving cells for leading out output signals therefrom to form a second added signal in which the output signals are added, the first and second added signals used for forming a tracking error signal which indicates tracking error of the optical data reading; and

    a third wiring pattern arranged between the first and second wiring patterns, in which a signal having a different nature from those of the output signals from the light-receiving cells.

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