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. 19, 2013
Filed:
Mar. 01, 2010
Atsushi Nakamura, Osaka, JP;
Naoyasu Miyagawa, Hyogo, JP;
Kiyotaka Ito, Hyogo, JP;
Mamoru Shoji, Okayama, JP;
Yasumori Hino, Nara, JP;
Atsushi Nakamura, Osaka, JP;
Naoyasu Miyagawa, Hyogo, JP;
Kiyotaka Ito, Hyogo, JP;
Mamoru Shoji, Okayama, JP;
Yasumori Hino, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical information storage medium according to the present invention has at least one information storage layer. The optical information storage medium has a management area that stores at least one unit containing control information about the optical information storage medium. The control information includes a format number, which provides information about at least a write strategy type and a write pre-compensation type, and a write strategy parameter, which provides information about the magnitude of shift in an edge position, or variation in the pulse width, of a write pulse train to form a recording mark. And the value of the format number changes according to a combination of the write strategy type and the write pre-compensation type.