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:
Dec. 04, 1984
Filed:
Jan. 29, 1982
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A reproducing element feeding and driving circuit is provided in a rotary recording medium reproducing apparatus consisting of a signal pickup device having a reproducing element for reproducing recorded signals from a rotary recording medium, a feeding mechanism for feeding the signal pickup device, and a tracking error signal obtaining circuit for obtaining a tracking error signal so as to perform tracking control with respect to the reproducing element. The feeding and driving circuit comprises a sampling circuit for sampling the tracking error signal when the reproducing element is reproducing a point on the rotary recording medium corresponding to one of a plurality of pairs of points on the rotary recording medium, where the pairs of points are points which are at symmetrical positions along a diametrical direction of the rotary recording medium with respect to a center of the rotary recording medium, averaging circuit for averaging a value sampled by the sampling circuit and obtaining a signal substantially corresponding to a DC component of the tracking error signal, and a feed pulse applying circuit for obtaining a feed pulse having a pulse width which is in accordance with the DC component obtained from the averaging circuit and applying the feed pulse thus obtained to the feeding mechanism.