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. 25, 2008
Filed:
Aug. 15, 2003
Yutaka Nagai, Yokohama, JP;
Takehiko Sekine, Yokohama, JP;
Yutaka Nagai, Yokohama, JP;
Takehiko Sekine, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Abstract
For protecting the recording from shifting in the position, by conducting sync detection, correctly, from land pre pits, in an optical type recording disc, even if sync pattern errors, in more detail, synchronization is conducted on a recording circuit, with certainty, even if an even sync pattern erroneously changes into an odd sync pattern. When the even sync pattern is detected from an odd sync pattern detection window, a sync lock flag is turned into a condition of unlock. When the sync lock flag continues a lock condition for 16 sectors, the synchronization is carried out on a detection cycle counter and a recording cycle counter.