Optical disk device and control method

OPT OpenIR > 半导体激光器专利数据库

	Optical disk device and control method
其他题名	Optical disk device and control method
	DOI, AKIHIKO; IZAWA, KATSUMI
	2009-10-01
专利权人	KABUSHIKI KAISHA TOSHIBA
公开日期	2009-10-01
授权国家	美国
专利类型	发明申请
摘要	According to one embodiment, an optical disk device includes a semiconductor laser, a circuit which generates a timing signal to determine a recording pulse timing, a circuit which sets a magnitude of a current for the laser, a circuit which switches the magnitude of the current according to the timing signal, a generation circuit which generates a correction signal from the timing signal to correct response characteristics of a recording pulse, a circuit which synthesizes the correction signal and signals obtained as the switch result to determine the magnitude of the current, and a circuit which feeds the current to the laser according to the synthesis result. The generation circuit extracts high-frequency components from the signals obtained as the switch result and the signal generated by the synthesis circuit, and switches a frequency and a signal gain of each of the components, in accordance with recording pulse conditions.
其他摘要	根据一个实施例，一种光盘装置包括半导体激光器，产生定时信号以确定记录脉冲定时的电路，设定激光器电流大小的电路，切换电流大小的电路根据定时信号，产生来自定时信号的校正信号以校正记录脉冲的响应特性的产生电路，合成校正信号的电路和作为开关结果获得的信号以确定电流的大小，以及根据合成结果将电流馈送到激光器的电路。生成电路从作为切换结果获得的信号和由合成电路生成的信号中提取高频分量，并根据记录脉冲条件切换每个分量的频率和信号增益。
主权项	An optical disk device comprising: a semiconductor laser configured to emit laser light to irradiate an optical disk for recording and reproduction; a recording pulse timing generator configured to generate a recording timing signal indicating a recording pulse timing; a laser current configuration circuit configured to set a magnitude of a laser current to be fed to the semiconductor laser; a switch configured to switch the magnitude of the laser current in accordance with the recording timing signal; a first pulse correction signal generator configured to generate a pulse correction signal configured to correct response characteristics of a recording pulse from the recording timing signal; a synthesizer configured to synthesize the pulse correction signal and a plurality of signals of the switch result of the switch and to determine the magnitude of the laser current; and a driving circuit configured to feed the laser current to the semiconductor laser in accordance with the synthesis result of the synthesizer; wherein the pulse correction signal generator is configured to extract high-frequency components from the signals of the switch result of the switch and the signal generated by the synthesizer, and to switch at least one of a frequency and a signal gain of each of high-frequency component in accordance with recording pulse conditions.
申请日期	2009-03-31
专利号	US20090245056A1
专利状态	失效
申请号	US12/415840
公开（公告）号	US20090245056A1
IPC 分类号	G11B20/18
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/58414
专题	半导体激光器专利数据库
作者单位	KABUSHIKI KAISHA TOSHIBA
推荐引用方式 GB/T 7714	DOI, AKIHIKO,IZAWA, KATSUMI. Optical disk device and control method. US20090245056A1[P]. 2009-10-01.