发明名称 Automatic power control system for optical disc drive and method thereof
摘要 A method and system for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk includes a plurality of auto power control areas (APC areas) and a plurality of data areas, and the APC areas and the data areas are interleaved in between. In at least one of the APC areas that before the data areas for a normal data writing, an initial driving signal is used for the normal data writing to drive the optical pick-up head to emit laserbeam. A detected level of the laserbeam is then obtained. An update initial driving signal is then calibrated according to the detected level and a target level.
申请公布号 US8115661(B2) 申请公布日期 2012.02.14
申请号 US201113084098 申请日期 2011.04.11
申请人 WU GWO-HUEI;LAN KUO-JUNG;LIN YU-HSUAN;CHANG YOU-WEN;MEDIATEK INC. 发明人 WU GWO-HUEI;LAN KUO-JUNG;LIN YU-HSUAN;CHANG YOU-WEN
分类号 H03M1/10;G11B7/125 主分类号 H03M1/10
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