Light modulation method for optical disk drive device

Details Light modulation method for optical disk drive device Light modulation method for optical disk drive device

1995-09-22

1997-05-20

Dinh, Tan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, G11B 700

Patent

active

056318901

ABSTRACT:
A recovery is promptly executed for a reading error of a track address in a modified constant angular velocity format. Upon seeking, when a defective reading operation of the track address occurs, a clock frequency of the zone corresponding to each detecting position is selected due to the detection of the head by a head position sensor or the movement of the head to a home position at which a detection signal of a home position sensor is obtained, and the reading operation is retried. Errors due to back talk noises upon reproduction are reduced. At the time of retry for the occurrence of errors due to the back talk noises, a modulation amount of a read beam from a laser diode is changed.

REFERENCES:
patent: 4873679 (1989-10-01), Murai et al.
patent: 4894817 (1990-01-01), Tanaka et al.
patent: 5138599 (1992-08-01), Fukushima et al.
patent: 5182741 (1993-01-01), Maeda et al.
patent: 5245595 (1993-09-01), Yasukawa
patent: 5278814 (1994-01-01), Deguchi et al.
patent: 5315568 (1994-05-01), Dente et al.

Affiliated with

Also associated with

Rating

Light modulation method for optical disk drive device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light modulation method for optical disk drive device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light modulation method for optical disk drive device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1729470