Optical information recording/reproducing apparatus and method w

Details Optical information recording/reproducing apparatus and method w Optical information recording/reproducing apparatus and method w

1996-05-30

1999-09-14

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4426, 369 4429, 369 4435, 369 54, G11B 709

Patent

active

059532963

ABSTRACT:
An optical information recording/reproducing apparatus for recording and/or reproducing information on or from both a land portion and a groove portion of a recording medium using a light beam includes a focus servo for adjusting a focus state of the light beam, and a tracking servo for adjusting a tracking state of the light beam. Parameters of the tracking servo and focusing servo are checked in state in which the light beam is being traced on the land portion and in a state in which the light beam is being traced on the groove portion, respectively. The focus servo and/or the tracking servo adjusts the focus state and/or tracking state of the light beam on the basis of the parameters.

REFERENCES:
patent: 4858214 (1989-08-01), Baba
patent: 4890273 (1989-12-01), Takeuchi et al.
patent: 4955011 (1990-09-01), Baba
patent: 5568461 (1996-10-01), Nishiuchi et al.
Patent Abstracts of Japan, vol. 95, No. 8, published Sep. 29, 1995, an English Abstract of JP 07-129975, published May 19, 1995.
Patent Abstracts of Japan, vol. 95, No. 8, published Sep. 29, 1995, an English Abstract of JP 07-121891, published May 12, 1995.
Patent Abstracts of Japan, vol. 96, No. 4, published Apr. 30, 1996, an English Abstract of JP 07-320285, published Dec. 8, 1995.
Patent Abstracts of Japan, vol. 96, No. 6, published Jun. 28, 1996, an English Abstract of JP 08-030975, published Feb. 2, 1996.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1516792