Optical disk recording device with laser power control capable o

Details Optical disk recording device with laser power control capable o Optical disk recording device with laser power control capable o

1996-02-27

1997-09-02

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4435, 369 54, 369116, G11B 700

Patent

active

056639414

ABSTRACT:
An optical disk recording device for forming a pit on an optical disk by projecting recording laser beam of an amount corresponding to a pit length of the pit to be formed includes a recording speed increase ratio setting section for setting a recording speed increase ratio, a rotation control section for rotating the optical disk at the set recording speed increase ratio, and a laser power control section for controlling laser power of the recording laser beam in a pit period and laser power of the recording laser beam in a bottom period in such a manner that both the laser power in the pit period and the laser power in the bottom period will be increased as the set recording speed increase ratio is increased. When recording is made at a higher recording speed, not only the pit power but also the bottom power of the recording laser beam is increased and, accordingly, difference between the pit power and the bottom power is reduced as compared with a case where the pit power only is increased. Therefore, an adequate time is made available for detection of a tracking error, so that deterioration of the signal-to-noise ratio of a wobble signal can be prevented.

REFERENCES:
patent: 4426693 (1984-01-01), Satoh et al.
patent: 4813034 (1989-03-01), Mashimo
patent: 4937809 (1990-06-01), Miyadera et al.
patent: 4982389 (1991-01-01), Nakao et al.
patent: 5170382 (1992-12-01), Yamada et al.

Affiliated with

Also associated with

Rating

Optical disk recording device with laser power control capable o 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 disk recording device with laser power control capable o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk recording device with laser power control capable o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-313964