Drive apparatus, drive method, information record medium...

Details Drive apparatus, drive method, information record medium... Drive apparatus, drive method, information record medium...

2005-03-14

2009-02-24

Tran, Thang V (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S053270, C369S116000

Reexamination Certificate

active

07496011

ABSTRACT:
A drive apparatus including: a superposition device which superposes a superposition signal on a drive signal for driving a light beam emission device that emits a light beam and which outputs the drive signal on which the superposition signal is superposed to the light beam emission device, a reference clock signal generation device which generates a reference clock signal, a frequency change device which changes a frequency of the superposition signal based on a quality index for indicating a quality of a reproduction signal that is obtained from a reflection light that is the light beam reflected on a record medium, a phase locked loop device which controls the changed frequency so as to be constant by a feedback method in use of the generated reference clock signal.

REFERENCES:
patent: 5790482 (1998-08-01), Saga et al.
patent: 5959943 (1999-09-01), Yonezawa et al.
patent: 6678220 (2004-01-01), Saga
patent: 7009924 (2006-03-01), Morishima
patent: 7075868 (2006-07-01), Shigemori
patent: 7170838 (2007-01-01), Toda et al.

Affiliated with

Also associated with

Rating

Drive apparatus, drive method, information record medium... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drive apparatus, drive method, information record medium..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive apparatus, drive method, information record medium... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4068243