Optical storage system and control method

Details Optical storage system and control method Optical storage system and control method

Filed on

2006-10-03

Date issued

2006-10-03

Examiner

Tran, Thang V. (Department: 2627)

Patent Class

Dynamic information storage or retrieval

SubClass

With servo positioning of transducer assembly over track...

SubSubClass

Optical servo system

Other Related Categories

C369S053280, C369S044250

Type

Reexamination Certificate

Status

active

Patent number

07116609

Description

ABSTRACT:
A reference-position learning unit measures a current of one rotation of a medium in a state in which the focus of an objective lens is pulled-in by a focus pull-in control unit at a predetermined point in the radial direction of the medium upon insertion of the medium, calculates a mean current value thereof, and stores the calculated mean current value in the memory as a reference current value for positioning the objective lens at a reference position at which focus pull-in control is started. In focus pull-in performed after a learning process, a reference-position control unit positions the objective lens at a reference position obtained through a learning process in accordance with the reference current, and then, causes the focus pull-in control unit to perform focus pull-in.

REFERENCES:
patent: 5970032 (1999-10-01), Ikeda et al.
patent: 6381201 (2002-04-01), Shihara et al.
patent: 6388963 (2002-05-01), Tanaka
patent: 6633522 (2003-10-01), Ryu
patent: 6-86444 (1994-03-01), None
patent: 8-102071 (1996-04-01), None
patent: 2000-339712 (2000-12-01), None
patent: 2001-331949 (2001-11-01), None
International Search Report for Corresponding Application PCT/JP03/00405 mailed Nov. 11, 2003.

Affiliated with

Also associated with

Rating

Optical storage system and control method 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 storage system and control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical storage system and control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3682215