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:
Apr. 14, 1987
Filed:
Mar. 18, 1983
Sony Corporation, Tokyo, JP;
Abstract
In an apparatus for controlling the tracking position of a magnetic head which reproduces parallel tracks successively formed on magnetic tape, the parallel tracks containing a video signal and a pilot signal having mutually different frequencies changing in cyclic sequence from track to track, a pair of control signals are generated in response to amplitudes of the reproduced pilot signal, said pair of control signals being indicative of opposite displacements of the head from the track to be traced, and a tracking error signal is formed by mixture of the pair of control circuits to control the tracking position in response to said tracking error signal. In accordance with this invention, magnitude of the pair of control signals is independently controlled according to the desired tracking position of the head.