Tracking defect preventing circuit

Details Tracking defect preventing circuit Tracking defect preventing circuit

1988-12-21

1991-06-25

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4432, 369 4435, G11B 700

Patent

active

050273388

ABSTRACT:
Tracking servo control of a pickup to an optical card is performed by: obtaining an addition of two tracking error signals detected through respective sub-beam spots, detecting that at least one of the sub-beam spots has met a scratch, etc. from the addition signal, and suspending the tracking servo control while the sub-beam spot is in contact with or located on the scratch, etc. by interrupting a difference error signal and holding a value of the difference error signal just before the interruption.

REFERENCES:
patent: 4821251 (1989-04-01), Hosoya

Affiliated with

Also associated with

Rating

Tracking defect preventing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tracking defect preventing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tracking defect preventing circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1045896