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:
Nov. 15, 1988
Filed:
Oct. 02, 1986
Susumu Kozuki, Tokyo, JP;
Hiroyuki Takimoto, Yokohama, JP;
Mitsuhiro Otokawa, Yokohama, JP;
Hiroo Edakubo, Akishima, JP;
Kenichi Nagasawa, Kawasaki, JP;
Keiji Satoh, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an information signal recording and reproducing apparatus arranged to record in rotation pilot signals of a plurality of kinds having different frequencies, one in each of recording tracks along with an information signal on a recording medium and to reproduce the information signal from the recording medium, the relative positions of a rotary head which is reproducing the information signal and the recording medium are controlled by using the pilot signals reproduced by the rotary head and reference signals of a plurality of kinds which are of different frequencies corresponding respectively to the pilot signals of the plurality of kinds and are generated in rotation; and the generating sequence of these reference signals is changed by skipping a given number of reference signals according to signals reproduced by a rotary erase head during a reproducing operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile