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:
Aug. 24, 2010
Filed:
Sep. 29, 2006
Hisanori Itoga, Hamamatsu, JP;
Seiya Yamada, Hamamatsu, JP;
Tatsuo Fushiki, Hamamatsu, JP;
Hiroshi Kubo, Odawara, JP;
Michihiro Shibata, Odawara, JP;
Hisanori Itoga, Hamamatsu, JP;
Seiya Yamada, Hamamatsu, JP;
Tatsuo Fushiki, Hamamatsu, JP;
Hiroshi Kubo, Odawara, JP;
Michihiro Shibata, Odawara, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
An optical pickup is opposed to an inner-radius portion of an optical disc that is set, and pits (a modulation signal) are read by applying laser light for a DVD to the inner-radius portion. The read-out modulation signal is decoded by inputting it to a CD decoder. If decoded disc information includes particular verification data, the optical disc is judged to be a legitimate optical disc of a particular type and formation of a visible image on the label surface is permitted.