Patent ID: 6304530
Filing Date: 2001-10-16
Classification: G11B

Abstract:
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; anda 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.