Method of identifying optical disc type, and optical disc...

Details Method of identifying optical disc type, and optical disc... Method of identifying optical disc type, and optical disc...

2007-07-17

2007-07-17

Psitos, A M (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044290, C369S044410, C369S053280

Reexamination Certificate

active

10803909

ABSTRACT:
An unknown optical disc is identified as a CD when an all sum signal value AS-max by a photodetector on a signal surface of the unknown optical disc is larger than an all sum signal value AS-cdref for CD signal surface reference for identifying the CD and the hybrid SACD as a CD based on each CD signal surface thereof, and a focus search driving voltage Y corresponding to the signal surface of the unknown optical disc is lager than a voltage value acquired by a predetermined relational expression between a focus search driving voltage Q corresponding to a DVD signal surface of a reference DVD and a focus search driving voltage R corresponding to a CD signal surface of a reference CD.

REFERENCES:
patent: 6058082 (2000-05-01), Hwang
patent: 6278672 (2001-08-01), Kobayashi
patent: 6449232 (2002-09-01), Kuwahara et al.
patent: 09-044982 (1997-02-01), None
patent: 09-190634 (1997-07-01), None
patent: 09-204728 (1997-08-01), None
patent: 09-274765 (1997-10-01), None
patent: 09-293321 (1997-11-01), None
patent: 10 097755 (1998-04-01), None
patent: 2000-293932 (2000-10-01), None
patent: 2001-101771 (2001-04-01), None
patent: 2001-176129 (2001-06-01), None
patent: 2001-209936 (2001-08-01), None
patent: 2002-367171 (2002-12-01), None
patent: 2004-146016 (2004-05-01), None

Affiliated with

Also associated with

Rating

Method of identifying optical disc type, and optical disc... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of identifying optical disc type, and optical disc..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of identifying optical disc type, and optical disc... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3744790