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:
Oct. 12, 1999
Filed:
Apr. 02, 1997
Nobutoshi Takayama, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information signal reproducing apparatus for reproducing information signals from a recording medium on which several parallel tracks are formed, in which a tracking error signal is produced by use of signals reproduced by a head means for tracing the recording medium so as to reproduce signals, and the tracking error signal is sampled with periods which are determined, irrespective of a rotational period of a rotary head, so as to provide a tracking control signal. Further, upon reproduction of information signals from the recording medium on which plural kinds of pilot signal components are recorded at several parallel tracks together with the information signals, a first tracking error signal which is produced in accordance with the pilot signal components among signals reproduced by one of a plurality of heads for tracing the recording medium so as to reproduce signals, and a second tracking error signal which is produced by in accordance with the pilot signal components among signals reproduced by another of the plurality of heads, are selectively used.