Optical disk apparatus

Details Optical disk apparatus Optical disk apparatus

2007-01-16

2007-01-16

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044350, C369S053150

Reexamination Certificate

active

10352882

ABSTRACT:
A Differential Phase Detecting (DPD) tracking error generating section generates a DPD tracking error signal from a plurality of sense signals supplied from an optical sensor. A Push Pull (PP) tracking error generating section generates a PP tracking error signal from a plurality of sense signals supplied from the optical sensor. The amplitude of each of the DPD tracking error signal and PP tracking error signal is adjusted suitably under the control of a CPU. The suitably adjusted signals are added by an adder, thereby generating a tracking error signal.

REFERENCES:
patent: 4520469 (1985-05-01), Todokoro et al.
patent: 4703468 (1987-10-01), Baba et al.
patent: 4953151 (1990-08-01), Imanaka
patent: 5633845 (1997-05-01), Horiguchi
patent: 5828637 (1998-10-01), Kim
patent: 5841751 (1998-11-01), Komazaki et al.
patent: 6438098 (2002-08-01), Nakajima et al.
patent: 6493296 (2002-12-01), Fukumoto et al.
patent: 1173013 (1998-02-01), None
patent: 58150144 (1983-09-01), None
patent: 62112236 (1987-05-01), None
patent: 5325234 (1993-12-01), None
patent: 10124900 (1998-05-01), None
patent: 11-175989 (1999-07-01), None
Copy of Notification of Reasons for Rejection issued in Japanese Patent Application No. 2002-024761 dated Mar. 11, 2004 (and English translation) on which the instant application relies for priority.
Copy of Notification of the First Office Action issued in People's Republic of China Patent Office, dated Jun. 4, 2004 for Patent Application No. 03102316.9.

Affiliated with

Also associated with

Rating

Optical disk apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disk apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3794779