Optical information reproducing apparatus provided with laser po

Details Optical information reproducing apparatus provided with laser po Optical information reproducing apparatus provided with laser po

1994-11-02

1996-08-20

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369107, G11B 7125

Patent

active

055485731

ABSTRACT:
An optical information reproducing apparatus for reproducing information from an optical recording medium that has a recording and reproducing and information-rewritable track region, which is composed of a header region having information, such as a sector start mark, track number and sector number, in a pit shape formed when the recording medium has been manufactured and a recording and reproducing user data region that has no pit and enables information to be recorded and reproduced, the optical information reproducing apparatus having a semiconductor laser output control circuit for controlling a quantity of a semiconductor laser beam to be emitted to a predetermined value such that a detected quantity of an emitted semiconductor laser beam is obtained in only the user data region when the quantity of the laser beam emitted by a semiconductor laser that irradiates the recording medium with a semiconductor laser beam is detected.

REFERENCES:
patent: 5123007 (1992-06-01), Miyauchi et al.
patent: 5155722 (1992-10-01), Yoshida
patent: 5323374 (1994-06-01), Arai et al.
patent: 5410527 (1995-04-01), Ashinuma
patent: 5422865 (1995-06-01), Katayama et al.
patent: 5430696 (1995-07-01), Tokita et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2335898