Invention Grant
- Patent Title: Optical disc apparatus
- Patent Title (中): 光盘装置
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Application No.: US12585975Application Date: 2009-09-30
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Publication No.: US08284641B2Publication Date: 2012-10-09
- Inventor: Masanori Ogura
- Applicant: Masanori Ogura
- Applicant Address: JP Kawasaki-Shi, Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kawasaki-Shi, Kanagawa
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2008-256492 20081001
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
A simple circuit configuration allows an optical disc apparatus to reduce a problem of sound skips occurring due to damage on an optical disc. To this end, an LPF extracts a low-frequency component from a tracking actuator drive signal obtained by a tracking actuator driver. When the optical disc apparatus reads and writes information to and from the optical disc, a sled drive signal supplier outputs a sled pulse signal, as a drive signal for a sled motor, for a set-up predetermined time within each interval of a predetermined length, the sled pulse signal having a level corresponding to a level of the low-frequency component obtained by the LPF. On the other occasions, the sled drive signal supplier outputs the low-frequency component obtained by the LPF as the drive signal for the sled motor.
Public/Granted literature
- US20100080092A1 Optical disc apparatus Public/Granted day:2010-04-01
Information query
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