Optical disk recording/reproduction apparatus with a...

Details Optical disk recording/reproduction apparatus with a... Optical disk recording/reproduction apparatus with a...

2006-04-04

2006-04-04

Miller, Brian E. (Department: 2652)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053340

Reexamination Certificate

active

07023777

ABSTRACT:
An optical disc recording/reproducing apparatus includes: recording/reproducing means for recording/reproducing information by emitting a light beam onto a disc having a track which wobbles at a predetermined frequency; reflected light detection means for detecting the light beam reflected from the disc; wobble signal detection means for detecting a wobble amplitude signal which represents an amplitude of a signal generated from a component which is extracted from an output of the reflected light detection means and which wobbles at the predetermined frequency; and variation rate detection means for detecting dirt adhered on the disc based on a rate of a variation in the wobble amplitude signal, wherein the variation rate detection means detects the dirt based on the wobble amplitude signal before the recording/reproducing means records/reproduces the information.

REFERENCES:
patent: 4375092 (1983-02-01), Yoshio
patent: 4821254 (1989-04-01), Satoh et al.
patent: 5210735 (1993-05-01), Hoshino et al.
patent: 5513160 (1996-04-01), Satoh et al.
patent: 5878014 (1999-03-01), Hoeven
patent: 6418100 (2002-07-01), Park et al.
patent: 6621779 (2003-09-01), Inokuchi et al.
patent: 6744718 (2004-06-01), Ko et al.
patent: 58014333 (1983-01-01), None
patent: 03008127 (1991-01-01), None
patent: 05144016 (1993-06-01), None
patent: 07176153 (1995-07-01), None
English Translation of JP 05144016 A.
English Translation of JP 07176153 A.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3621916