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	Method and device for generating a stable power control signal
	TSAI, CHIN-YIN; LAI, YI-LIN
	2011-06-14
著作权人	HAN HOLDINGS, LLC
专利号	USR42451
国家	美国
文献子类	授权发明
其他题名	Method and device for generating a stable power control signal
英文摘要	Method and device for generating a stable power control signal in a CD recorder. The power control signal for controlling a laser diode may be a read level, an erase level and a write level. A pickup device outputs a feedback control signal to a read control circuit, and a read power control voltage is thus obtained. Then, the read power control voltage is inputted to a write control circuit, which generates first and second write power control voltages. The read level equals a reference voltage added by the read power control voltage, the erase level equals the read level added by the first write power control voltage, and the write level equals the erase level added by the second write power control voltage, so the read power control voltage and thus the read, erase and write levels are automatically and dynamically adjusted as the feedback control signal varies.
公开日期	2011-06-14
申请日期	2009-10-22
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/32803]
专题	半导体激光器专利数据库
作者单位	HAN HOLDINGS, LLC
推荐引用方式 GB/T 7714	TSAI, CHIN-YIN,LAI, YI-LIN. Method and device for generating a stable power control signal. USR42451. 2011-06-14.

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