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:
Jul. 27, 1993
Filed:
Feb. 05, 1992
Tsuguhide Sakata, Tokyo, JP;
Tetsuro Inoue, Tokyo, JP;
Saburou Nakazato, Tokyo, JP;
Kazuhito Ohashi, Kanagawa, JP;
Toshihiko Mimura, Kanagawa, JP;
Tokihiko Ogura, Kanagawa, JP;
Yasutomo Suzuki, Kanagawa, JP;
Tomohiko Sasatani, Kanagawa, JP;
Somei Kawasaki, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information signal recording/reproducing apparatus includes a recording apparatus and a reproducing apparatus. The recording apparatus is arranged to record on a recording medium an information signal after angle-modulating the signal in such a way as to cause a signal corresponding to a timewise portion of the angle-modulated information signal to be in a given relation to a reference signal. The reproducing apparatus is arranged to angle-demodulate the angle-modulated information signal when it is reproduced from the recording medium, and to perform time base correction on the basis of the signal part of the angle-modulated information signal. Time base variations occurring during the reproduction can be accurately carried out by the arrangement without having any special signal added to the information signal during recording.