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	Laser drive unit and information recording/reproducing apparatus
	KUREBAYASHI, MASAAKI; ASADA, AKIHIRO; KAKU, TOSHIMITSU; OONUKI, HIDEO; HOSHINO, TAKASHI; KANDOU, HIDEHIKO
	2002-11-26
著作权人	HITACHI CONSUMER ELECTRONICS CO., LTD.
专利号	US6487154
国家	美国
文献子类	授权发明
其他题名	Laser drive unit and information recording/reproducing apparatus
英文摘要	A laser drive (LD) unit 1 according to the present invention is provided with a laser drive waveform controller 6, into which information for setting the laser drive is entered from a controller 2, for generating a laser drive waveform on the basis of that information and supplying an indicated amperage; an LD current setting unit 7 for setting a laser drive current matching the indicated amperage; an LD current output unit 8 for varying the laser drive current on the basis of the laser drive waveform and supplying the current so varied to a laser diode 3; and a current setting corrector 9, into which a monitor signal obtained at the time of monitoring the laser beam emission from the laser diode 3 is monitored, for correcting the laser drive current set by the current setting unit 7 by using that monitor signal to adjust the power of the laser diode 3. The laser drive waveform controller 6, current setting unit 7, current output unit 8 and current setting corrector 9 are formed on the same substrate.
公开日期	2002-11-26
申请日期	2000-01-25
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/33648]
专题	半导体激光器专利数据库
作者单位	HITACHI CONSUMER ELECTRONICS CO., LTD.
推荐引用方式 GB/T 7714	KUREBAYASHI, MASAAKI,ASADA, AKIHIRO,KAKU, TOSHIMITSU,et al. Laser drive unit and information recording/reproducing apparatus. US6487154. 2002-11-26.

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