Optical disc apparatus, control device and control signal...

Details Optical disc apparatus, control device and control signal... Optical disc apparatus, control device and control signal...

2007-05-08

2007-05-08

Korzuch, Wiliam (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

10659392

ABSTRACT:
The optical disc apparatus comprises a convergence lens12, a light detection device14for outputting a first and a second detection signals after detecting reflected optical beam area by area, an actuator13for shifting the convergence lens12, a gain balance circuit30for changing a gain balance of the first and the second detection signals, an addition circuit123for outputting the addition signal AS after adding the first detection signal to the second detection signal in response to the shift in lens position and the change in gain balance made by the gain balance circuit30and the actuator13, and an addition signal measurement unit361and a gain balance adjustment unit362operable to obtain the addition signal AS from the addition circuit123, specify the gain balance that equalizes the detection sensitivities in the respective areas of the light detection device14based on the obtained result, and control the gain balance circuit30that realizes the determined gain balance.

REFERENCES:
patent: 5629911 (1997-05-01), Sasaki
patent: 5841465 (1998-11-01), Fukunaga et al.
patent: 6028826 (2000-02-01), Yamamoto et al.
patent: 6167010 (2000-12-01), Shimada et al.
patent: 6195319 (2001-02-01), Ohshita et al.
patent: 6285635 (2001-09-01), Watanabe et al.
patent: 6353203 (2002-03-01), Hokodate et al.
patent: 6493304 (2002-12-01), Watanabe et al.
patent: 5-151592 (1993-06-01), None
patent: 05151590 (1993-06-01), None
patent: 2000-331347 (2000-11-01), None
patent: 407270 (2000-10-01), None

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