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:
Aug. 01, 2000
Filed:
Sep. 16, 1999
Applicant:
Inventors:
Takashi Ishida, Yawata, JP;
Shinji Kubota, Daito, JP;
Mamoru Shoji, Sakai, JP;
Shinji Ishida, Akashi, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
3692753 ; 3691247 ;
Abstract
An optical disc having a plurality of sectors, each sector sequentially comprising a field for recording guard data, a data recording field containing a synchronous signal and following user data, the guard data in the guard data recording field corresponding to a recording pattern of the synchronous signal, and the phase of the recording pattern being continuous at the boundary of the guard data recording field and the data recording field; and a recording method using such discs; and a device for formatting and recording on such discs.