会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Semiconductor laser control circuit and laser light source
    • 半导体激光控制电路和激光光源
    • US06490302B1
    • 2002-12-03
    • US09698975
    • 2000-10-27
    • Kenji KoishiKohjyu Konno
    • Kenji KoishiKohjyu Konno
    • H01S300
    • H01S5/06832G11B7/1263H01S5/4025
    • A semiconductor laser control circuit of the invention can modulate a light power level among a plurality of set levels including a first level, a second level lower than the first level, and a third level lower than the first level but higher than the second level. The semiconductor laser control circuit includes: a circuit portion for generating a first signal based on a light power level actually detected by a light detector in a first period in which a light power level of laser radiation is to be modulated among the first level, the second level, and the third level; a circuit portion for generating a second signal based on a light power level actually detected by the light detector in a second period in which a light power level of the laser radiation is to be modulated between the first level and the second level; a circuit portion for generating a third signal based on a light power level actually detected by the light detector in a third period in which the light power level of the laser radiation is to be at the third level; and a signal processor for determining a light power level of the first level and a light power level of the second level by operation, based on the first to third signals. The light power level is adjusted based on an output of the signal processor.
    • 本发明的半导体激光器控制电路可以在包括第一电平,低于第一电平的第二电平和低于第一电平但高于第二电平的第三电平的多个设定电平之间调制光功率电平。 半导体激光器控制电路包括:电路部分,用于在第一阶段中基于由光检测器实际检测的光功率电平产生第一信号,在第一周期中,要在第一电平之间调制激光辐射的光功率电平, 第二级和第三级; 电路部分,用于在第一时间段内基于由光检测器实际检测的光功率电平产生第二信号,在第二周期中将要在第一电平和第二电平之间调制激光辐射的光功率电平; 电路部分,用于在激光辐射的光功率级别处于第三级的第三周期中,基于由光检测器实际检测到的光功率电平产生第三信号; 以及信号处理器,用于基于第一至第三信号,通过操作来确定第一电平的光功率电平和第二电平的光功率电平。 光功率电平根据信号处理器的输出进行调整。
    • 5. 发明授权
    • Recording method, recording apparatus, and recording medium
    • 记录方法,记录装置和记录介质
    • US08068392B2
    • 2011-11-29
    • US10562756
    • 2004-07-01
    • Kenji Koishi
    • Kenji Koishi
    • G11B7/00
    • G11B7/0062G11B7/00455G11B7/00736G11B7/1267
    • A recording method is provided, which comprises the steps of (a) generating a plurality of pulse sequences corresponding to a plurality of linear velocities, (b) while rotating a recording medium with a linear velocity selected from the plurality of linear velocities, forming at least one of a recording mark and a space by irradiating the recording medium with a pulse sequence selected from the plurality of pulse sequences, the pulse corresponding to the linear velocity. The step (a) comprises the steps of (a-1) measuring at least one first recording parameter corresponding to at least one linear velocity selected from the plurality of linear velocities, (a-2) determining a second recording parameter corresponding to the plurality of linear velocities based on the at least one first recording parameter measured, and (a-3) generating the plurality of pulse sequences corresponding to the plurality of linear velocities based on the second recording parameter measured.
    • 提供了一种记录方法,其包括以下步骤:(a)产生对应于多个线速度的多个脉冲序列,(b)在以多个线速度选择的线速度旋转记录介质时,形成 通过用从多个脉冲序列中选择的脉冲序列照射记录介质,记录标记和空间中的至少一个,对应于线速度的脉冲。 步骤(a)包括以下步骤:(a-1)测量与从多个线速度中选择的至少一个线速度对应的至少一个第一记录参数,(a-2)确定对应于多个线速度的第二记录参数 基于所测量的至少一个第一记录参数的线速度,以及(a-3)基于所测量的第二记录参数生成与多个线速度对应的多个脉冲序列。
    • 8. 发明授权
    • Optical data recording method
    • 光学数据记录方法
    • US07272095B2
    • 2007-09-18
    • US10501500
    • 2003-10-09
    • Mamoru ShojiKenji KoishiAtsushi NakamuraTakashi IshidaShuichi Tasaka
    • Mamoru ShojiKenji KoishiAtsushi NakamuraTakashi IshidaShuichi Tasaka
    • G11B7/0045G11B20/14
    • G11B7/24085G11B7/00456G11B11/10506G11B11/1053
    • The optical data recording method comprising the steps of: modulating data to be recorded, to generate a plurality of recording modulation codes; and emitting a pulse-like light beam to an optical disc, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the optical disc. In the optical data recording method, at least two of the plurality of recording marks comprises: a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code.
    • 该光学数据记录方法包括以下步骤:调制要记录的数据,以产生多个记录调制码; 并向光盘发射脉冲状光束,使得在光盘上形成具有与多个记录调制码对应的长度的多个记录标记和空间。 在光学数据记录方法中,多个记录标记中的至少两个记录标记包括:设置在前面并形成记录标记的前沿的第一脉冲,设置在后端并形成尾部的最后脉冲 记录标记的边缘,以及设置在第一脉冲和最后脉冲之间并形成记录标记的中心的多脉冲串。 多脉冲串具有长于T的脉冲周期,其表示记录调制码的参考周期。