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:
Jan. 24, 2012
Filed:
Mar. 06, 2008
Ryuya Tachino, Kanagawa, JP;
Kenichi Hayashi, Tokyo, JP;
Ryuya Tachino, Kanagawa, JP;
Kenichi Hayashi, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
There is provided a recording medium playback device that includes a first binarization portion that binarizes, by a PRML method, a signal that is read from a recording medium, a second binarization portion that binarizes the signal based on a magnitude relationship to a specified threshold value, a first frame synchronization signal detection portion that detects a synchronization pattern in a first binarized data string that is produced by the first binarization portion, and a second frame synchronization signal detection portion that detects a synchronization pattern in a second binarized data string that is produced by the second binarization portion. If the synchronization pattern is not detected by the first frame synchronization signal detection portion, a signal that is derived from the synchronization pattern that is detected by the second frame synchronization signal detection portion is used as the frame synchronization signal.