Optical tracking control apparatus for controlling a tracking of

Details Optical tracking control apparatus for controlling a tracking of Optical tracking control apparatus for controlling a tracking of

1986-10-31

1990-06-12

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 4411, G11B 700

Patent

active

049339257

ABSTRACT:
An optical tracking control apparatus comprises a differential amplifier for differentially amplifying signals respectively reproduced from two mutually adjacent track turns of a guide track on both sides of an intermediate part in which an information signal is recorded and reproduced on and from a disc, a zero crossing detector for detecting a zero crossing of an output signal of the differential amplifier and for producing a switching pulse signal, and a polarity inverting circuit responsive to the switching pulse signal for alternately inverting the polarity of a crosstalk component reproduced from the two mutually adjacent track turns of the guide track as crosstalk for every one-half period of the switching pulse signal. An output signal of the polarity inverting circuit is used as a tracking error signal for controlling the tracking of the light beam.

REFERENCES:
patent: 4094013 (1978-06-01), Hill et al.
patent: 4363116 (1982-12-01), Kleuters et al.
patent: 4472748 (1984-09-01), Kato et al.
patent: 4486791 (1984-12-01), Wada et al.
patent: 4497048 (1985-01-01), Kimura
patent: 4502134 (1985-02-01), Kondo et al.
patent: 4544838 (1985-10-01), Musha et al.
patent: 4748609 (1988-05-01), Yonezawa et al.

Affiliated with

Also associated with

Rating

Optical tracking control apparatus for controlling a tracking of 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 tracking control apparatus for controlling a tracking of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical tracking control apparatus for controlling a tracking of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-622861