The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 1988
Filed:
Oct. 06, 1986
Sony Corporation, Tokyo, JP;
Abstract
In a tracking control apparatus for controlling tracking alignment of a rotary head with respect to record tracks appearing in succession on a record medium and in each of which there are recorded, at predetermined positions varying from track to track in accordance with a predetermined repeating sequence, pilot signals for controlling tracking and position detecting signals having different recorded length and which identify the positions of the pilot signals. An identifying signal for identifying the recorded length of a position detecting signal recorded in a track being traced by the rotary head is generated from the output of the rotary head, and a sampling signal is generated in response to the identifying signal for sampling a pilot signal reproduced as cross-talk from an adjacent track so as to reduce the pull-in time of the tracking alignment operation.