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:
Jun. 14, 2005
Filed:
Apr. 25, 2002
Applicants:
Masayoshi Nagata, Kanagawa, JP;
Takayoshi Chiba, Tokyo, JP;
Yasuo Tone, Tokyo, JP;
Shigeo Yamaguchi, Kanagawa, JP;
Junichi Horigome, Tokyo, JP;
Inventors:
Masayoshi Nagata, Kanagawa, JP;
Takayoshi Chiba, Tokyo, JP;
Yasuo Tone, Tokyo, JP;
Shigeo Yamaguchi, Kanagawa, JP;
Junichi Horigome, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B007/00 ;
U.S. Cl.
CPC ...
Abstract
An optical disk apparatus for a phase-change optical disk detects the boundary between a first region and a second region prior to detecting a synchronization mark. The synchronization mark is detected in accordance with the position of the detected boundary between the first region and the second region. User data is read from a data region in accordance with the detected synchronization mark.