Apparatus and method for detecting tracking error signal...

Details Apparatus and method for detecting tracking error signal... Apparatus and method for detecting tracking error signal...

2006-07-26

2010-02-23

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044290, C369S053280, C369S053200

Reexamination Certificate

active

07668052

ABSTRACT:
An apparatus and method for digitally detecting a tracking error signal using multiple phase clocks. The apparatus includes a phase extractor receiving four divided outputs in response to light reflected from an optical disk and extracting four divided phases, respectively, a phase difference detector detecting phase differences between two phases among the four divided phases, a multiple phase clock generator generating a plurality of phase clocks in response to a predetermined clock signal, a phase error detector counting phase differences in response to each of the plurality of phase clocks, summing the counted phase differences, and detecting a phase error, and a tracking error output unit detecting the tracking error signal in response to the phase error and outputting the detected tracking error signal.

REFERENCES:
patent: 6236628 (2001-05-01), Kim
patent: 6741533 (2004-05-01), Hiratsuka et al.
patent: 7012862 (2006-03-01), Hiratsuka
patent: 7102967 (2006-09-01), Ma et al.
patent: 7239583 (2007-07-01), Hiratsuka et al.
patent: 7277367 (2007-10-01), Takehara
patent: 7289399 (2007-10-01), Hiratsuka
patent: 7310291 (2007-12-01), Ma et al.
patent: 2001/0028613 (2001-10-01), Okamoto et al.
patent: 2004/0151089 (2004-08-01), Buchler et al.
patent: 2001-243643 (2001-09-01), None
patent: 2003-030879 (2003-01-01), None
patent: 1999-0080092 (1999-11-01), None

Affiliated with

Also associated with

Rating

Apparatus and method for detecting tracking error signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for detecting tracking error signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for detecting tracking error signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4189518