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. 22, 2008
Filed:
Apr. 06, 2004
Yasuaki Morimoto, Kawasaki, JP;
Ryouta Akiyama, Kawasaki, JP;
Yasuaki Morimoto, Kawasaki, JP;
Ryouta Akiyama, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An information writing/reading apparatus that cooperates with an information record medium including a ROM area and a RAM area, either the RAM area or the ROM area having in advance control information recorded thereon used to limit reading and/or writing of information, the information writing/reading apparatus including an optical pick-up unit for reading information stored on the information record medium; and a control unit for, based on the control information read by the optical pick-up unit, limiting reading and/or writing of information from/to the other area on which the control information is not recorded and outputting a signal which notifies of presence of the other area only out of the ROM area and the RAM area on the information record medium.