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	Laser driver, optical disk apparatus using the same, and laser control method
	NIHEI, MAKOTO; KAKU, TOSHIMITSU; ASADA, AKIHIRO; HOSHINO, TAKASHI
	2005-02-10
著作权人	HITACHI CONSUMER ELECTRONICS CO., LTD.
专利号	US20050030989A1
国家	美国
文献子类	发明申请
其他题名	Laser driver, optical disk apparatus using the same, and laser control method
英文摘要	An optical disk apparatus uses a laser driver which can measure the frequency of the high-frequency superimposed current of the semiconductor laser simply and accurately. The apparatus includes a semiconductor laser which emits a laser beam onto the optical disk, a laser driver which drives the semiconductor laser with a current, with the high-frequency current being superimposed thereon, and measures the frequency of the high-frequency current, and a main controller which controls the frequency of the high-frequency current produced by the laser driver by using the frequency measured by the laser driver.
公开日期	2005-02-10
申请日期	2004-09-09
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/61145]
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	NIHEI, MAKOTO,KAKU, TOSHIMITSU,ASADA, AKIHIRO,et al. Laser driver, optical disk apparatus using the same, and laser control method. US20050030989A1. 2005-02-10.

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