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:
Mar. 27, 1984
Filed:
Dec. 09, 1981
U.S. Philips Corporation, New York, NY (US);
Abstract
A reproducing apparatus for information signals recorded in inclined tracks together with tracking signals whose frequency changes from track to track in a cyclic sequence, comprises a variable-frequency signal generator for the generation of track selection signals, from which together with the crosstalk tracking signals reproduced during a playback mode by at least one rotatable playback head arranged on an electromechanical transducer a transducer actuating signal is derived for tracking purposes, by means of which actuating signal the transducer with the playback head is adjustable between two extreme positions transversely of the tracks. By means of an amplitude discriminator having two threshold values corresponding to the two amplitudes of the actuating signal for deflecting the transducer to its two extreme position, the actuating signal is detected and when the threshold values are exceeded an additional change-over of the track selection signal generation is initiated, which continues until the transducer can guide the playback head along the tracks without reaching one of its extreme positions.