Focus tracking registration for optical reproducing systems

Details Focus tracking registration for optical reproducing systems Focus tracking registration for optical reproducing systems

1974-02-04

1976-01-13

Konick, Bernard

Telegraphy

Systems

Simplex-reversing periodic

1791003V, 1791004R, 250201, 250578, H04N 576, G11B 1118

Patent

active

039327000

ABSTRACT:
A video disc reproducing system wobbles the reading beam across the storage track of the disc and the outputs of two photocells are added to develop both the information signal and a radial beam tracking signal employed to maintain tracking registration of the beam and the storage track. The outputs of these cells are also combined differentially to develop a focus tracking signal used to adjust the focal plane of the reading beam to maintain focus registration.
A search feature adjusts the focus conditions over a range but is disabled and is superseded by the focus tracking control arrangement once focus conditions are brought within the operating range of the focus tracking arrangement.

REFERENCES:
patent: 3198880 (1965-08-01), Toulon
patent: 3553455 (1971-01-01), Sato et al.
patent: 3610934 (1971-10-01), Turner
patent: 3673412 (1972-06-01), Olson
patent: 3848095 (1974-11-01), Wohlmut

Affiliated with

Also associated with

Rating

Focus tracking registration for optical reproducing systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focus tracking registration for optical reproducing systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus tracking registration for optical reproducing systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-748446