Laser power control in an optical recording system to compensate

Details Laser power control in an optical recording system to compensate Laser power control in an optical recording system to compensate

1996-01-16

1997-10-07

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 48, 369 54, 369124, G11B 700

Patent

active

056755686

ABSTRACT:
An apparatus and method for controlling laser power in an optical recording system in the presence of mark length variations produced by a groove wobble when an incident recording beam is off-track. An optical source supplies an incident write signal to an optical medium, such that data may be recorded on the medium during an incident write pulse as an optically-detectable mark. A reflection of the incident write signal from the medium is detected to provide a reflected write signal. A mark formation effectiveness (MFE) signal is generated from the reflected write signal to provide an indication of mark formation. A feedback circuit connected between the signal generator and the optical source controls a power level of the source in accordance with MFE signal variations produced by the wobbled groove.

REFERENCES:
patent: 5043971 (1991-08-01), Van et al.
patent: 5088080 (1992-02-01), Ishibashi et al.
patent: 5241524 (1993-08-01), Lee
patent: 5315572 (1994-05-01), Akatsuka et al.
patent: 5339301 (1994-08-01), Raaymakers et al.
patent: 5363360 (1994-11-01), Fairchild
patent: 5406540 (1995-04-01), Longman et al.
patent: 5436880 (1995-07-01), Eastman et al.
patent: 5440534 (1995-08-01), Eastman et al.
patent: 5446716 (1995-08-01), Eastman et al.
patent: 5463614 (1995-10-01), Morita
patent: 5495466 (1996-02-01), Dohmeier et al.
patent: 5537373 (1996-07-01), Horikiri

Affiliated with

Also associated with

Rating

Laser power control in an optical recording system to compensate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser power control in an optical recording system to compensate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser power control in an optical recording system to compensate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2362995