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:
Feb. 25, 1992
Filed:
Oct. 09, 1990
Yuichiro Akatsuka, Hachioji, JP;
Takayuki Abe, Sagamihara, JP;
Akira Matsueda, Hachioji, JP;
Takao Rokutan, Higashimurayama, JP;
Nagahiro Gocho, Hachioji, JP;
Olympus Optical Co., Ltd., , JP;
Abstract
An optical record medium in the form of a wallet-size optical card including a data region in which a number of data tracks are provided in parallel with each other, an identification region provided on one side of the data region, and a mark region provided on a side of the identification regions. Data signals are recorded in the data tracks and addresses of the data tracks are recorded in the identification region. Every time a data signal has been recorded in a data track, a mark is recorded in the mark region at such a position that the mark is aligned with the relevant data track viewed in a track direction.