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:
Mar. 27, 2012
Filed:
Aug. 30, 2006
Masahiro Kato, Saitama, JP;
Masayoshi Yoshida, Saitama, JP;
Masahiro Kato, Saitama, JP;
Masayoshi Yoshida, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An information recording medium () is provided with (i) a read only area (ROAand the like) whereupon read only information is previously recorded by forming embossed pits; (ii) a data area () wherein recording information can be recorded; (iii) a first management area (CDZ) wherein first position information () relating to the position of the read only area is previously recorded by forming embossed pits; and (iv-1) a second management area (RMA) wherein second position information () can be recorded in addition to the first position information or (iv-2) a second management area wherein second position information can be recorded as substitute for the first position information. The second position information relates to the position of a rewrite prohibited area (RWROA) wherein rewriting of a part of or the entire recording information is prohibited in the data area.