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:
Apr. 15, 2008
Filed:
Dec. 03, 2002
Applicant:
Hiroshi Gotoh, Yokohama, JP;
Inventor:
Hiroshi Gotoh, Yokohama, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A medium judgment program is recorded on an information recording medium. The program causes a computer to judge whether the medium is authorized. The judgment may be based on information on a unique value preformed in the medium in regard to each of the media. If the computer determines that the information recording medium is right or authorized, the program permits the computer to reproduce a main program. The main program is different than the medium judgment program. If the computer determines that the information recording medium is wrong or unauthorized, the computer is prohibited from reproducing the main program.