Invention Grant
- Patent Title: Optical disc apparatus
- Patent Title (中): 光盘装置
-
Application No.: US13461939Application Date: 2012-05-02
-
Publication No.: US08441901B2Publication Date: 2013-05-14
- Inventor: Kazuki Kajikawa
- Applicant: Kazuki Kajikawa
- Applicant Address: JP Osaka
- Assignee: Funai Electric Co., Ltd.
- Current Assignee: Funai Electric Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Morgan, Lewis & Bockius LLP
- Priority: JP2011-121912 20110531
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical disc apparatus includes an optical pickup, a signal generation section which generates a total reflection signal and a focus error signal, and a servo control section which controls optical pickup. The optical disc apparatus further includes a main control section which binarizes the track cross signal by using a predetermined threshold value and, by using the binarized track cross signal, checks the tracing state of a track. The main control section controls the servo control section to check, by tracing one turn of the track of an optical disc, whether or not a tracking servo deviation occurs. When a tracking servo deviation occurs during the tracing, the main control section controls the servo control section to make the check once again. When, in the check made once again, a tracking servo deviation is found to occur again, the main control section increases the threshold value used in binarization.
Public/Granted literature
- US20120307610A1 OPTICAL DISC APPARATUS Public/Granted day:2012-12-06
Information query
IPC分类: