Invention Grant
- Patent Title: Optical disk apparatus and method
- Patent Title (中): 光盘装置及方法
-
Application No.: US11570153Application Date: 2005-05-19
-
Publication No.: US07995426B2Publication Date: 2011-08-09
- Inventor: Michinori Sato
- Applicant: Michinori Sato
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Priority: JP2004-170771 20040609
- International Application: PCT/JP2005/009151 WO 20050519
- International Announcement: WO2005/122150 WO 20051222
- Main IPC: G11B7/004
- IPC: G11B7/004

Abstract:
It is highly precisely determined as to whether or not a laser-irradiated position on an optical disk is positioned within an identification area (BCA) in which identification information is recorded, and the position of the identification information area is efficiently determined.An optical disk apparatus includes an optical pickup for detecting reflected light from an optical disk and generating a light amount signal, and a detecting section for outputting a detection signal which is in accordance with a change in the signal level of the light amount signal, the detection signal indicating that the change has continued for a first predetermined time or longer. Furthermore, the optical disk apparatus includes a pulse signal output section which, each time the detection signal is output, outputs a pulse signal which continues for a second predetermined time, and an area determination section which determines whether an irradiated position of light is within the identification area or not based on a continuing duration of the pulse signal.
Public/Granted literature
- US20080002547A1 Optical Disk Apparatus and Method Public/Granted day:2008-01-03
Information query
IPC分类: