Error correcting apparatus with error corecting signal holding f

Details Error correcting apparatus with error corecting signal holding f Error correcting apparatus with error corecting signal holding f

1994-11-21

1997-03-11

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4425, 369 4436, 369 4434, G11B 7095

Patent

active

056108877

ABSTRACT:
An error signal generating circuit for adjusting a position of a sub-beam on an optical disc to a correct one. A timing circuit generates a test signal so that a driver drives a tracking coil. As a result, a difference signal is generated in a difference signal generating circuit and is then compared to a reference value in a comparing circuit. A controlling signal is generated in a controlling circuit in reply to a comparing error so as to be held in a holding circuit. The thus held controlling signal is converted into an analog signal in a D/A converter and is then applied to a VCA to vary the amplifying rate, such that the difference signal becomes zero when a correct tracking operation is being carried out.

REFERENCES:
patent: 5138596 (1992-08-01), Yamada
patent: 5245599 (1993-09-01), Ishii et al.
patent: 5291466 (1994-03-01), Kwak

Affiliated with

Also associated with

Rating

Error correcting apparatus with error corecting signal holding f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Error correcting apparatus with error corecting signal holding f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Error correcting apparatus with error corecting signal holding f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-449213