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32 条记录 (耗时 0.036 秒)

    Laser drive, optical disc apparatus, and laser-driving method
    1.
    发明授权
    Laser drive, optical disc apparatus, and laser-driving method 失效
    激光驱动，光盘装置和激光驱动方法

    公开(公告)号：US07680166B2

    公开(公告)日：2010-03-16

    申请号：US11299788

    申请日：2005-12-13

    申请人： Motoi Kimura ,  Yasuyuki Takeshita ,  Hidetaka Kodama

    发明人： Motoi Kimura ,  Yasuyuki Takeshita ,  Hidetaka Kodama

    IPC分类号： H01S3/00

    CPC分类号： H01S5/06808 ,  G11B7/1263 ,  H01S5/0683

    摘要： A laser drive includes a variable output voltage source that can control an output voltage, a laser source connected to the variable output voltage source, a laser drive circuit that drives the laser source, and a monitoring controller that monitors an operating voltage of the laser drive circuit and controls the output of the variable output voltage source such that the monitored operating voltage becomes equal to a desired value.

    摘要翻译： 激光驱动器包括可控制输出电压的可变输出电压源，连接到可变输出电压源的激光源，驱动激光源的激光驱动电路以及监视激光驱动器的工作电压的监视控制器 电路并控制可变输出电压源的输出，使得监测的工作电压变得等于期望值。

    Laser drive, optical disc apparatus, and laser-driving method
    2.
    发明申请
    Laser drive, optical disc apparatus, and laser-driving method 失效
    激光驱动，光盘装置和激光驱动方法

    公开(公告)号：US20060153259A1

    公开(公告)日：2006-07-13

    申请号：US11299788

    申请日：2005-12-13

    申请人： Motoi Kimura ,  Yasuyuki Takeshita ,  Hidetaka Kodama

    发明人： Motoi Kimura ,  Yasuyuki Takeshita ,  Hidetaka Kodama

    IPC分类号： H01S3/00

    CPC分类号： H01S5/06808 ,  G11B7/1263 ,  H01S5/0683

    摘要： A laser drive includes a variable output voltage source that can control an output voltage, a laser source connected to the variable output voltage source, a laser drive circuit that drives the laser source, and a monitoring controller that monitors an operating voltage of the laser drive circuit and controls the output of the variable output voltage source such that the monitored operating voltage becomes equal to a desired value.

    摘要翻译： 激光驱动器包括可控制输出电压的可变输出电压源，连接到可变输出电压源的激光源，驱动激光源的激光驱动电路以及监视激光驱动器的工作电压的监视控制器 电路并控制可变输出电压源的输出，使得监测的工作电压变得等于期望值。

    Recording and playback apparatus and optical head
    4.
    发明授权
    Recording and playback apparatus and optical head 失效
    记录和播放设备和光学头

    公开(公告)号：US07852734B2

    公开(公告)日：2010-12-14

    申请号：US11751062

    申请日：2007-05-21

    申请人： Noriaki Nishi ,  Hiroaki Mizuma ,  Motoi Kimura ,  Kenji Yamamoto ,  Masatoshi Nishino

    发明人： Noriaki Nishi ,  Hiroaki Mizuma ,  Motoi Kimura ,  Kenji Yamamoto ,  Masatoshi Nishino

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1263 ,  G11B7/128 ,  G11B7/1356 ,  G11B7/1369 ,  G11B7/1381

    摘要： The light intensity of a light beam emitted from a light source is appropriately controlled when the light beam is transmitted through a variable optical coupling efficiency device in an optical head. During a read mode, the light beam from the light source is incident on an optical disk at an intensity relatively weaker than that of the light source. By switching the optical coupling efficiency of the variable optical coupling efficiency device between a write mode and a read mode, the light intensity directed to an optical recording medium is substantially varied from the write mode to the read mode. This arrangement eliminates the need for substantially increasing the optical output power ratio of the light source of write power to read power.

    摘要翻译： 当光束通过光学头中的可变光耦合效率器件传输时，适当地控制从光源发射的光束的光强度。 在读取模式期间，来自光源的光束以比光源弱的强度入射到光盘上。 通过在写入模式和读取模式之间切换可变光耦合效率器件的光耦合效率，指向光学记录介质的光强度从写入模式到读取模式基本上是变化的。 这种布置消除了对读取功率的写入功率的光源的光输出功率比实质上增加的需要。

    Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit
    5.
    发明申请
    Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit 失效
    激光驱动装置，激光驱动方法，光学装置，光学装置和脉冲电流产生电路

    公开(公告)号：US20100272138A1

    公开(公告)日：2010-10-28

    申请号：US12662034

    申请日：2010-03-29

    申请人： Hiroyuki Chiba ,  Motoi Kimura

    发明人： Hiroyuki Chiba ,  Motoi Kimura

    IPC分类号： H01S3/13

    CPC分类号： G11B7/1263 ,  G11B7/0062 ,  H01S5/0428

    摘要： Disclosed herein is a laser driving apparatus, including: a driving unit adapted to current drive a laser device with a current value in accordance with a level of a signal supplied thereto; and an emission light waveform correction unit adapted to receive supply of a pulsed reference signal and generate, based on a correction timing pulse interlocked with a rising edge and/or a falling edge of a pulse, a correction signal having a level different from that of the reference signal and then supply the correction signal to the driving unit so that the shape of the emission light waveform of the laser device becomes close to that of a rectangular wave.

    摘要翻译： 这里公开了一种激光驱动装置，包括：驱动单元，其适于根据提供给其的信号的电平来电流驱动具有电流值的激光装置; 以及发光光波形校正单元，其适于接收脉冲参考信号的供给，并且基于与脉冲的上升沿和/或下降沿互锁的校正定时脉冲产生具有与脉冲的上升沿和/ 参考信号，然后将校正信号提供给驱动单元，使得激光装置的发射光波形的形状变得接近矩形波的形状。

    Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit
    7.
    发明授权
    Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit 失效
    激光驱动装置，激光驱动方法，光学装置，光学装置和脉冲电流产生电路

    公开(公告)号：US08335144B2

    公开(公告)日：2012-12-18

    申请号：US12662034

    申请日：2010-03-29

    申请人： Hiroyuki Chiba ,  Motoi Kimura

    发明人： Hiroyuki Chiba ,  Motoi Kimura

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1263 ,  G11B7/0062 ,  H01S5/0428

    摘要： Disclosed herein is a laser driving apparatus, including: a driving unit adapted to current drive a laser device with a current value in accordance with a level of a signal supplied thereto; and an emission light waveform correction unit adapted to receive supply of a pulsed reference signal and generate, based on a correction timing pulse interlocked with a rising edge and/or a falling edge of a pulse, a correction signal having a level different from that of the reference signal and then supply the correction signal to the driving unit so that the shape of the emission light waveform of the laser device becomes close to that of a rectangular wave.

    摘要翻译： 这里公开了一种激光驱动装置，包括：驱动单元，其适于根据提供给其的信号的电平来电流驱动具有电流值的激光装置; 以及发光光波形校正单元，其适于接收脉冲参考信号的供给，并且基于与脉冲的上升沿和/或下降沿互锁的校正定时脉冲产生具有与脉冲的上升沿和/ 参考信号，然后将校正信号提供给驱动单元，使得激光装置的发射光波形的形状变得接近矩形波的形状。

    Optical disc system and control method thereof
    9.
    发明授权
    Optical disc system and control method thereof 失效
    光盘系统及其控制方法

    公开(公告)号：US07342862B2

    公开(公告)日：2008-03-11

    申请号：US10819287

    申请日：2004-04-07

    申请人： Motoi Kimura

    发明人： Motoi Kimura

    IPC分类号： G11B5/09

    CPC分类号： G11B7/1267 ,  G11B7/0062

    摘要： An optical disc system includes a disc recording unit for recording an information signal on an optical disc by switching irradiation power of laser light to be applied to the optical disc in accordance with the information signal. The disc recording unit includes a semiconductor laser; a laser-power controlling circuit for outputting a laser-driving-current instruction signal; a recording-pulse generating circuit for outputting a laser-modulation timing pulse; a laser driving circuit for generating a laser driving current in accordance with the laser-driving-current instruction signal and the laser-modulation timing pulse; and a correction-data storage for storing as correction data the shift between the laser-modulation timing pulse and the pulse position of the laser driving current. The optical disc system further includes a controller for correcting the pulse position of the laser driving current to a desired position by correcting the position of the laser-modulation timing pulse with the correction data.

    摘要翻译： 光盘系统包括盘记录单元，用于根据该信息信号切换要施加到光盘上的激光的照射功率，将信息信号记录在光盘上。 盘记录单元包括半导体激光器; 用于输出激光驱动电流指令信号的激光功率控制电路; 用于输出激光调制定时脉冲的记录脉冲发生电路; 激光驱动电路，用于根据激光驱动电流指令信号和激光调制定时脉冲产生激光驱动电流; 以及校正数据存储器，用于存储激光调制定时脉冲与激光驱动电流的脉冲位置之间的偏移作为校正数据。 光盘系统还包括控制器，用于通过用校正数据校正激光调制定时脉冲的位置，将激光器驱动电流的脉冲位置校正到所需位置。