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	Enhanced linearity DVD writing current circuit
	LI, ERIC; ZHANG, YI
	2012-04-24
著作权人	SILICON CORE TECHNOLOGY, INC.
专利号	US8164995
国家	美国
文献子类	授权发明
其他题名	Enhanced linearity DVD writing current circuit
英文摘要	A writing current circuit (42) supplies a controlled electrical current to a laser diode (34) for recording data swiftly onto a DVD (16). A plurality of current sources (62) in the writing current circuit (42) supply electrical current directly to the laser diode (34). Each current source (62) respectively receives a single output signal from a current control register (52) included in the writing current circuit (42) which activates or deactivates the current source (62) for supplying a particular quantity of current to the laser diode (34). In one aspect, a pair of current reference signals received by the current source (62) control electrical current supply to the diode (34). Incorporated into these controlling reference signals is a simulation of electrical characteristics of the diode (34). In another aspect, each current source (62) responds to a logical inverse of the output signal from the current control register (52) for controlling overshoot in voltage applied across the diode (34).
公开日期	2012-04-24
申请日期	2010-12-29
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/32900]
专题	半导体激光器专利数据库
作者单位	SILICON CORE TECHNOLOGY, INC.
推荐引用方式 GB/T 7714	LI, ERIC,ZHANG, YI. Enhanced linearity DVD writing current circuit. US8164995. 2012-04-24.

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