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:
Oct. 13, 2009
Filed:
Mar. 08, 2007
Masayoshi Yoshida, Tokorozawa, JP;
Takeshi Koda, Tokorozawa, JP;
Akira Imamura, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
On a write-once-type recording medium, there are provided: a definite defect management areato definitely record therein defect management information; and a plurality of temporary defect management areasA,B, andC to temporarily record therein the defect management information. If the recording mediumis not yet finalized, every time the defect management information is updated, the updated defect management information is recorded into any one of the plurality of temporary defect management areas. Moreover, a status information recording areais provided on the recording medium, and status information for indicating the temporary defect management area in which there is the defect management information recorded at last is recorded into the status information recording area. By referring to the status information, it is possible to quickly specify the defect management information recorded at last.