Rca Inc.

Michael J Mindel

James C Rustman

Richard C Palmer

Michael E Miller

In a system for correcting tracking errors in a video disc player, digital information, corresponding to field numbers is encoded on the video signal during one horizontal line of the res ective vertical blanking interval. Tracking errors, such as a locked track condition or a skipped track condition are detected by noting improper sequence of two or more decoded field numbers. A kicker apparatus is provided to move the signal pickup device in a direction so as to reduce the tracking error.

Track error correction system as for video disc player

A video disc playback system for detecting field number information recorded on a sectored video disc and representing stylus location, and for correlating presently received field number information with previously received field number information. Presently received field number data is correlated to previously received field number data to determine whether or not the presently received data indicates the playback stylus to be playing back from a predicted sector of the disc and within a predicted range of radius from the center of the disc. These range and sector checks are used to reduce the probability of data errors passing undetected during playback.

Video disc player system for correlating stylus position with

The quality of the low frequency signals recovered by a playback stylus may be improved by removing non-electrode metal deposits. A stream slurry lapper with a slurry of alumina in water can be used.

Growing community of inventors

Camby, IN, United States of America

Michael J Mindel