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1. 发明授权

US08406261B2 Laser driving device and laser driving method 失效
标题翻译：激光驱动装置和激光驱动方法
公开(公告)号：US08406261B2
公开(公告)日：2013-03-26
申请号：US12791992
申请日：2010-06-02
申请人： Goro Fujita , Tsutomu Maruyama , Seiji Kobayashi
发明人： Goro Fujita , Tsutomu Maruyama , Seiji Kobayashi
IPC分类号： H01S3/00 , H01S3/13 , H01S3/10
CPC分类号： G11B7/126
摘要： A laser driving device includes: a pulse signal generating unit that, after a voltage has risen from a predetermined reference voltage to a predetermined output voltage and a time of a sum of an oscillation period of relaxation oscillation and a light emission start time in a predetermined laser diode has nearly elapsed, generates a pulse signal having a waveform that falls divisionally in two or more stages from the output voltage to the reference voltage; and an output unit that generates a laser drive signal by performing signal processing on the pulse signal and outputs the signal to the laser diode.
摘要翻译：一种激光驱动装置，包括：脉冲信号生成单元，其在电压从规定的基准电压上升到规定的输出电压以及弛豫振荡的振荡周期和发光开始时间之和的时间为预定的激光二极管已经过去，产生具有从输出电压到参考电压分两级或更多级分的波形的脉冲信号; 以及通过对脉冲信号执行信号处理来产生激光驱动信号并将该信号输出到激光二极管的输出单元。

2. 发明申请

US20100309938A1 LASER DRIVING DEVICE AND LASER DRIVING METHOD 失效
标题翻译：激光驱动装置和激光驱动方法
公开(公告)号：US20100309938A1
公开(公告)日：2010-12-09
申请号：US12791992
申请日：2010-06-02
申请人： Goro Fujita , Tsutomu Maruyama , Seiji Kobayashi
发明人： Goro Fujita , Tsutomu Maruyama , Seiji Kobayashi
IPC分类号： H01S3/10
CPC分类号： G11B7/126
摘要： A laser driving device includes: a pulse signal generating unit that, after a voltage has risen from a predetermined reference voltage to a predetermined output voltage and a time of a sum of an oscillation period of relaxation oscillation and a light emission start time in a predetermined laser diode has nearly elapsed, generates a pulse signal having a waveform that falls divisionally in two or more stages from the output voltage to the reference voltage; and an output unit that generates a laser drive signal by performing signal processing on the pulse signal and outputs the signal to the laser diode.
摘要翻译：一种激光驱动装置，包括：脉冲信号生成单元，其在电压从规定的基准电压上升到规定的输出电压之后，将弛豫振荡的振荡周期和发光开始时间的和的时间设定为预定的激光二极管已经过去，产生具有从输出电压到参考电压分两级或更多级分的波形的脉冲信号; 以及通过对脉冲信号执行信号处理来产生激光驱动信号并将该信号输出到激光二极管的输出单元。

3. 发明授权

US08462599B2 Optical oscillation device and recording apparatus 失效
标题翻译：光学振荡装置和记录装置
公开(公告)号：US08462599B2
公开(公告)日：2013-06-11
申请号：US13540858
申请日：2012-07-03
申请人： Goro Fujita , Tsutomu Maruyama
发明人： Goro Fujita , Tsutomu Maruyama
IPC分类号： G11B5/09
CPC分类号： G11B7/1263 , B82Y20/00 , G11B7/127 , H01S5/06253 , H01S5/0658 , H01S5/34333
摘要： Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.
摘要翻译：提供了一种记录装置，其包括具有双量子阱分离限制异质结构的自激振荡半导体激光器，并且包括施加负偏置电压的可饱和吸收部分和注入增益电流的增益部分，光学分离单元，物镜，光接收元件，脉冲检测单元，参考信号生成单元，相位比较单元，记录信号生成单元和控制单元。

4. 发明申请

US20150131425A9 OPTICAL OSCILLATION DEVICE AND RECORDING APPARATUS 审中-公开
标题翻译：光学振荡装置和记录装置
公开(公告)号：US20150131425A9
公开(公告)日：2015-05-14
申请号：US13545688
申请日：2012-07-10
申请人： Goro Fujita , Tsutomu Maruyama , Masaru Kuramoto , Hideki Watanabe
发明人： Goro Fujita , Tsutomu Maruyama , Masaru Kuramoto , Hideki Watanabe
IPC分类号： G11B7/126 , G11B7/1374 , H01S5/065 , H01S5/0625 , H01S5/026 , G11B7/1275 , H01S5/34 , H01S5/343
CPC分类号： G11B7/126 , B82Y20/00 , G11B7/127 , G11B7/1275 , G11B7/128 , G11B2007/00457 , H01S5/0261 , H01S5/0602 , H01S5/06253 , H01S5/06255 , H01S5/0658 , H01S5/34333
摘要： Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.
摘要翻译：提供了一种记录装置，其包括具有双量子阱分离限制异质结构的自激振荡半导体激光器，并且包括施加负偏置电压的可饱和吸收部分和注入增益电流的增益部分，光学分离单元，物镜，光接收元件，脉冲检测单元，参考信号生成单元，相位比较单元，记录信号生成单元和控制单元。

5. 发明授权

US08537647B2 Recording apparatus 有权
标题翻译：记录装置
公开(公告)号：US08537647B2
公开(公告)日：2013-09-17
申请号：US13204217
申请日：2011-08-05
申请人： Goro Fujita , Tsutomu Maruyama , Junichi Horigome
发明人： Goro Fujita , Tsutomu Maruyama , Junichi Horigome
IPC分类号： G11B7/00
CPC分类号： G11B7/00456 , G11B7/0045 , G11B7/126 , G11B20/10009 , G11B20/10027 , G11B20/10222 , G11B20/14
摘要： A recording apparatus, which records information in an optical recording medium, includes: a mode-lock laser unit including a saturable absorber section that applies a bias voltage, a gain section that feeds a gain current, a semiconductor laser that emits laser light used to record the information on the optical recording medium, and an external resonator; an optical modulation unit performing amplification modulation on the laser light emitted from the mode-lock laser unit; a reference signal generation unit generating a master clock signal and supplying a signal synchronized with the master clock signal to the gain section of the semiconductor laser; a recording signal generation unit generating a recoding signal based on the master clock signal; and a driving circuit generating a driving pulse used to drive the optical modulation unit based on the recording signal.
摘要翻译：在光学记录介质中记录信息的记录装置包括：模式锁定激光单元，包括施加偏置电压的可饱和吸收部分，馈送增益电流的增益部分，发射用于将信息记录在光学记录介质和外部谐振器上; 光调制单元，对从锁模激光单元发射的激光进行放大调制; 参考信号生成单元，生成主时钟信号，并将与主时钟信号同步的信号提供给半导体激光器的增益部分; 记录信号生成单元，基于主时钟信号生成记录信号; 以及驱动电路，其基于记录信号产生用于驱动光调制单元的驱动脉冲。

6. 发明申请

US20130021891A1 OPTICAL OSCILLATION DEVICE AND RECORDING APPARATUS 审中-公开
公开(公告)号：US20130021891A1
公开(公告)日：2013-01-24
申请号：US13545688
申请日：2012-07-10
申请人： Goro Fujita , Tsutomu Maruyama , Masaru Kuramoto , Hideki Watanabe
发明人： Goro Fujita , Tsutomu Maruyama , Masaru Kuramoto , Hideki Watanabe
IPC分类号： G11B7/1374 , H01S5/34
CPC分类号： G11B7/126 , B82Y20/00 , G11B7/127 , G11B7/1275 , G11B7/128 , G11B2007/00457 , H01S5/0261 , H01S5/0602 , H01S5/06253 , H01S5/06255 , H01S5/0658 , H01S5/34333
摘要： Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.

7. 发明申请

US20120063288A1 RECORDING APPARATUS 有权
标题翻译：录音设备
公开(公告)号：US20120063288A1
公开(公告)日：2012-03-15
申请号：US13225615
申请日：2011-09-06
申请人： Goro Fujita , Tsutomu Maruyama
发明人： Goro Fujita , Tsutomu Maruyama
IPC分类号： G11B7/00
CPC分类号： G11B7/125 , G11B7/0045 , G11B7/126 , G11B2007/00457
摘要： A recording apparatus for recording information on an optical recording medium includes a mode-locked laser unit that includes a semiconductor laser emitting a laser beam for recording the information on the optical recording medium, and an external resonator, an optical modulation unit that amplifies and modulates the laser beam emitted from the mode-locked laser unit, a recording signal generation unit that generates a recording signal based on a reference signal from a drive of the optical recording medium, and a modulation unit that generates a modulation signal for driving the optical modulation unit by latching the recording signal using a laser clock generated by an oscillation pulse of the laser beam emitted from the mode-locked laser unit.
摘要翻译：用于在光学记录介质上记录信息的记录装置包括：锁模激光单元，其包括发射用于在光学记录介质上记录信息的激光束的半导体激光器，以及外部谐振器，放大并调制的光调制单元从锁模激光单元发射的激光束，基于来自光记录介质的驱动的参考信号产生记录信号的记录信号产生单元和产生用于驱动光调制的调制信号的调制单元使用由从锁模激光单元发射的激光束的振荡脉冲产生的激光时钟来锁存记录信号。

8. 发明申请

US20120044791A1 RECORDING APPARATUS 有权
标题翻译：录音设备
公开(公告)号：US20120044791A1
公开(公告)日：2012-02-23
申请号：US13204217
申请日：2011-08-05
申请人： Goro Fujita , Tsutomu Maruyama , Junichi Horigome
发明人： Goro Fujita , Tsutomu Maruyama , Junichi Horigome
IPC分类号： G11B19/06 , G11B7/007
CPC分类号： G11B7/00456 , G11B7/0045 , G11B7/126 , G11B20/10009 , G11B20/10027 , G11B20/10222 , G11B20/14
摘要： A recording apparatus, which records information in an optical recording medium, includes: a mode-lock laser unit including a saturable absorber section that applies a bias voltage, a gain section that feeds a gain current, a semiconductor laser that emits laser light used to record the information on the optical recording medium, and an external resonator; an optical modulation unit performing amplification modulation on the laser light emitted from the mode-lock laser unit; a reference signal generation unit generating a master clock signal and supplying a signal synchronized with the master clock signal to the gain section of the semiconductor laser; a recording signal generation unit generating a recoding signal based on the master clock signal; and a driving circuit generating a driving pulse used to drive the optical modulation unit based on the recording signal.
摘要翻译：在光学记录介质中记录信息的记录装置包括：模式锁定激光单元，包括施加偏置电压的可饱和吸收部分，馈送增益电流的增益部分，发射用于将信息记录在光学记录介质和外部谐振器上; 光调制单元，对从锁模激光单元发射的激光进行放大调制; 参考信号生成单元，生成主时钟信号，并将与主时钟信号同步的信号提供给半导体激光器的增益部分; 记录信号生成单元，基于主时钟信号生成记录信号; 以及驱动电路，其基于记录信号产生用于驱动光调制单元的驱动脉冲。

9. 发明授权

US08416671B2 Recording apparatus 有权
标题翻译：记录装置
公开(公告)号：US08416671B2
公开(公告)日：2013-04-09
申请号：US13225615
申请日：2011-09-06
申请人： Goro Fujita , Tsutomu Maruyama
发明人： Goro Fujita , Tsutomu Maruyama
IPC分类号： G11B7/00
CPC分类号： G11B7/125 , G11B7/0045 , G11B7/126 , G11B2007/00457
摘要： A recording apparatus for recording information on an optical recording medium includes a mode-locked laser unit that includes a semiconductor laser emitting a laser beam for recording the information on the optical recording medium, and an external resonator, an optical modulation unit that amplifies and modulates the laser beam emitted from the mode-locked laser unit, a recording signal generation unit that generates a recording signal based on a reference signal from a drive of the optical recording medium, and a modulation unit that generates a modulation signal for driving the optical modulation unit by latching the recording signal using a laser clock generated by an oscillation pulse of the laser beam emitted from the mode-locked laser unit.
摘要翻译：用于在光学记录介质上记录信息的记录装置包括：锁模激光单元，其包括发射用于在光学记录介质上记录信息的激光束的半导体激光器，以及外部谐振器，放大并调制的光调制单元从锁模激光单元发射的激光束，基于来自光记录介质的驱动的参考信号产生记录信号的记录信号产生单元和产生用于驱动光调制的调制信号的调制单元使用由从锁模激光单元发射的激光束的振荡脉冲产生的激光时钟来锁存记录信号。

10. 发明申请

US20130021887A1 OPTICAL OSCILLATION DEVICE AND RECORDING APPARATUS 失效
公开(公告)号：US20130021887A1
公开(公告)日：2013-01-24
申请号：US13540858
申请日：2012-07-03
申请人： Goro Fujita , Tsutomu Maruyama
发明人： Goro Fujita , Tsutomu Maruyama
IPC分类号： G11B7/126 , H01S3/13
CPC分类号： G11B7/1263 , B82Y20/00 , G11B7/127 , H01S5/06253 , H01S5/0658 , H01S5/34333
摘要： Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.

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