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	Offset calibration system and method of automatic power control loop
	LIN, YUNG-YU
	2005-06-02
著作权人	MEDIATEK INC.
专利号	US20050116723A1
国家	美国
文献子类	发明申请
其他题名	Offset calibration system and method of automatic power control loop
英文摘要	An offset calibration system of a control loop at least comprises an optical-to-electrical converter and an electrical-to-optical converter. The optical-to-electrical converter generates a pre-output signal and then transmits the pre-output signal to the electrical-to-optical converter to amplify. The offset calibration system comprises a comparator, an offset calibration module, and a determination circuit. The comparator compares the pre-output signal with a predetermined pre-reference signal to generate a pre-compared signal. The offset calibration module stores a predetermined and adjustable offset calibration value for adding to the pre-output signal. The determination circuit adjusts the offset calibration value based on the pre-compared signal, so the offset calibration value can be added to the pre-output signal dynamically to compensate and calibrate the offset of the pre-output signal caused by the optical-to-electrical converter to avoid the electrical-to-optical converter amplifying the offset of the pre-output signal again.
公开日期	2005-06-02
申请日期	2004-11-10
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/61166]
专题	半导体激光器专利数据库
作者单位	MEDIATEK INC.
推荐引用方式 GB/T 7714	LIN, YUNG-YU. Offset calibration system and method of automatic power control loop. US20050116723A1. 2005-06-02.

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