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. 27, 1992
Filed:
Dec. 13, 1991
Suzumu Kozuki, Tokyo, JP;
Hiroyuki Takimoto, Kanagawa, JP;
Motokazu Kashida, Tokyo, JP;
Koji Takahashi, Kanagawa, JP;
Kenichi Nagasawa, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A recording and/or reproducing apparatus arranged to detect whether a second information is recording or not, by using a first detection signal indicating a result of detection concerning whether no signal is recorded or any signal is recorded, and the second detection signal indicating the result of detection concerning whether the first information signal is recorded or not, in a case where the first or second information is recorded on the recording medium where no signal is recorded thereon, and where it cannot be detected whether the second information signal is recorded or not.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile