发明授权
US08630158B2 Method for reducing a number of input terminals of an automatic power control circuit, and associated automatic power control circuit
有权
一种用于减少自动功率控制电路的输入端数量的方法,以及相关的自动功率控制电路
- 专利标题: Method for reducing a number of input terminals of an automatic power control circuit, and associated automatic power control circuit
- 专利标题(中): 一种用于减少自动功率控制电路的输入端数量的方法,以及相关的自动功率控制电路
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申请号: US12918321申请日: 2010-06-13
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公开(公告)号: US08630158B2公开(公告)日: 2014-01-14
- 发明人: Cong Liu , Chih-Chien Huang
- 申请人: Cong Liu , Chih-Chien Huang
- 申请人地址: SG Singapore
- 专利权人: MediaTek Singapore Pte. Ltd.
- 当前专利权人: MediaTek Singapore Pte. Ltd.
- 当前专利权人地址: SG Singapore
- 代理商 Winston Hsu; Scott Margo
- 国际申请: PCT/CN2010/073939 WO 20100613
- 国际公布: WO2011/156951 WO 20111222
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
A method for reducing a number of input terminals of an APC circuit is provided, where the APC circuit is arranged to control an optical pickup unit (OPU) within an optical storage device. The method includes: utilizing at least one switching module to ground one of a first and a second input terminals of the APC circuit at a time; and utilizing the switching module to electrically connect an APC front end within the APC circuit to a non-grounded input terminal of the first and the second input terminals, in order to receive a detection signal of a photo diode of the OPU through the non-grounded input terminal at the time. An associated APC circuit is also provided.
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