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. 19, 1989
Filed:
Jun. 04, 1986
Masahiko Enari, Yokohama, JP;
Akio Aoki, Tokyo, JP;
Machiko Matsushita, Yokohama, JP;
Hiroshi Matsuoka, Kawasaki, JP;
Kazuo Minoura, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an information recording medium according to the present invention, marks for discriminating between information tracks and a mark indicative of the information concerning spacing from a position at which each of the marks is provided to the recording starting position are provided in an information block, and a plurality of such information blocks are continuously provided in the other area of the information tracks than the recording area. The specification also discloses an information recording and reproducing method and apparatus utilizing such a plurality of information blocks.