Invention Grant
US07839756B2 Method and system for controlling optical pick-up head locked to track center of optical storage medium
有权
用于控制光学拾取头锁定到光存储介质的轨道中心的方法和系统
- Patent Title: Method and system for controlling optical pick-up head locked to track center of optical storage medium
- Patent Title (中): 用于控制光学拾取头锁定到光存储介质的轨道中心的方法和系统
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Application No.: US12171303Application Date: 2008-07-11
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Publication No.: US07839756B2Publication Date: 2010-11-23
- Inventor: Hao-Hui Yin , Chih-Chung Wu , Kuo-Jung Lan
- Applicant: Hao-Hui Yin , Chih-Chung Wu , Kuo-Jung Lan
- Applicant Address: TW Science-Based Industrial Park, Hsin-Chu
- Assignee: Mediatek Inc.
- Current Assignee: Mediatek Inc.
- Current Assignee Address: TW Science-Based Industrial Park, Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
A method for controlling a position of a laser spot of a laser beam on an optical storage medium of a land and groove recording/reproduction type is provided. The method includes: detecting a pulse occurring in a reference signal while the laser spot is passing through a boundary between a groove track and a land track, wherein the reference signal is generated according to a reflected laser beam from the optical storage medium; determining a compensation value of the reference signal according to the pulse; utilizing the compensation value to adjust the reference signal for generating an adjusted reference signal; and utilizing the adjusted reference signal to control the position of the laser spot.
Public/Granted literature
- US20100008199A1 METHOD AND SYSTEM FOR CONTROLLING OPTICAL PICK-UP HEAD LOCKED TO TRACK CENTER OF OPTICAL STORAGE MEDIUM Public/Granted day:2010-01-14
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