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1. 发明申请

US20080056317A1 Laser Driver Circuit and Optical Disc Apparatus Having the Laser Driver Circuit 审中-公开
标题翻译：具有激光驱动电路的激光驱动电路和光盘装置
公开(公告)号：US20080056317A1
公开(公告)日：2008-03-06
申请号：US11848170
申请日：2007-08-30
申请人： Shinichiro Saito , Kazuto Kuroda
发明人： Shinichiro Saito , Kazuto Kuroda
IPC分类号： H01S3/00
CPC分类号： G11B7/126
摘要： To improve a recording speed and an optical waveform quality while lower power consumption in the laser driver circuit is achieved. In an optical disc apparatus including a laser driver circuit according to the present invention, a laser diode emits a laser light a power supply regulator supplies a predetermined power supply voltage to the laser driver circuit, a control micro computer performs a control to switch the predetermined power supply voltage supplied from the power supply regulator to the laser driver circuit in accordance with a recording time or a reproduction time.
摘要翻译：提高记录速度和光学波形质量，同时实现激光驱动电路的低功耗。在包括根据本发明的激光驱动器电路的光盘装置中，激光二极管发射激光，电源调节器向激光驱动电路提供预定的电源电压，控制微型计算机执行控制以切换预定的根据记录时间或再现时间，从电源调节器提供给激光驱动电路的电源电压。

2. 发明授权

US08368353B2 Secondary battery device and vehicle 有权
标题翻译：二次电池装置和车辆
公开(公告)号：US08368353B2
公开(公告)日：2013-02-05
申请号：US12872257
申请日：2010-08-31
申请人： Takashi Akiba , Mami Mizutani , Fumiyuki Yamane , Yuki Kuwano , Ryuichi Morikawa , Shuji Ono , Nobuo Shibuya , Kazuto Kuroda , Shinichiro Kosugi , Yasuhiro Miyamoto
发明人： Takashi Akiba , Mami Mizutani , Fumiyuki Yamane , Yuki Kuwano , Ryuichi Morikawa , Shuji Ono , Nobuo Shibuya , Kazuto Kuroda , Shinichiro Kosugi , Yasuhiro Miyamoto
IPC分类号： H02J7/00 , H05K7/14 , B60K1/00
CPC分类号： H02J9/002 , B60L2230/16 , B60L2240/545 , B60L2240/547 , H02J7/0016 , Y02T10/7088 , Y02T90/128 , Y02T90/163
摘要： According to one embodiment, the power supply management portion includes a timer configured to output an ON signal every time set by the control circuit, an OR circuit configured to receive supply of an output signal from the timer, an external signal supplied from outside, and a switch control signal output from the control circuit, and a switch circuit configured to switch output of the power source voltage from an external power source according to an output signal from the OR circuit, and the control circuit turns on a switch control signal after confirming which of the output signal from the timer or the external signal has turned on the switch circuit and turns off the switch control signal when both of the output signal from the timer and the signal supplied from outside are turned off.
摘要翻译：根据一个实施例，电源管理部分包括定时器，其被配置为每当由控制电路设置时输出ON信号; OR电路，被配置为接收来自定时器的输出信号的提供;从外部提供的外部信号;以及从控制电路输出的开关控制信号，以及开关电路，被配置为根据来自OR电路的输出信号从外部电源切换电源电压的输出，并且控制电路在确认之后接通开关控制信号当来自定时器的输出信号和从外部提供的信号都断开时，来自定时器或外部信号的输出信号中的哪一个已经导通开关电路并且关闭开关控制信号。

3. 发明授权

US07949071B2 Signal processing system and information storage medium 有权
标题翻译：信号处理系统和信息存储介质
公开(公告)号：US07949071B2
公开(公告)日：2011-05-24
申请号：US12626338
申请日：2009-11-25
申请人： Yuji Nagai , Chosaku Noda , Kazuo Watabe , Akihito Ogawa , Kazuto Kuroda , Nobuhisa Yoshida , Nobumasa Naito , Naoki Morishita , Naomasa Nakamura , Hideaki Ohsawa , Hiroharu Sato , Hisashi Yamada , Toshihiko Kaneshige
发明人： Yuji Nagai , Chosaku Noda , Kazuo Watabe , Akihito Ogawa , Kazuto Kuroda , Nobuhisa Yoshida , Nobumasa Naito , Naoki Morishita , Naomasa Nakamura , Hideaki Ohsawa , Hiroharu Sato , Hisashi Yamada , Toshihiko Kaneshige
IPC分类号： H03C1/52 , G06K9/00
CPC分类号： G11B20/14 , G11B20/0021 , G11B20/00579 , G11B20/00884 , G11B20/1426 , G11B2020/1457
摘要： According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.
摘要翻译：根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出，信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

4. 发明申请

US20090109815A1 OPTICAL DISC DEVICE AND OPTICAL DISC PROCESSING METHOD 审中-公开
标题翻译：光盘设备和光盘处理方法
公开(公告)号：US20090109815A1
公开(公告)日：2009-04-30
申请号：US12260920
申请日：2008-10-29
申请人： Takashi Usui , Kazuo Watabe , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Nobuaki Kaji , Masahiro Saito
发明人： Takashi Usui , Kazuo Watabe , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Nobuaki Kaji , Masahiro Saito
IPC分类号： G11B7/00
CPC分类号： G11B7/00456 , G11B7/1267
摘要： According to one embodiment, an optical disc device includes a light source portion which applies laser light to an optical disc, a drive portion which supplies a drive current to the light source portion so as to cause the light source portion to apply laser light of light pulses having relaxation oscillation, and a controller which controls the drive portion to supply a drive current so as to cause the light source portion to emit laser light of (n−1)×N (N is an integral number) light pulses having relaxation oscillation with respect to a mark with recording mark length nT (n: integral number, T: channel clock) to be recorded on the optical disc.
摘要翻译：根据一个实施例，光盘装置包括向光盘施加激光的光源部分，向光源部分提供驱动电流以使光源部分施加光的激光的驱动部分具有弛豫振荡的脉冲和控制驱动部分提供驱动电流以使光源部分发出具有弛豫振荡的（n-1）×N（N为整数）光脉冲的激光的控制器，相对于要记录在光盘上的具有记录标记长度nT（n：整数，T：通道时钟）的标记。

5. 发明申请

US20090109808A1 OPTICAL HEAD DEVICE AND INFORMATION 审中-公开
标题翻译：光头设备和信息
公开(公告)号：US20090109808A1
公开(公告)日：2009-04-30
申请号：US12208658
申请日：2008-09-11
申请人： Nobuaki Kaji , Kazuo Watabe , Takashi Usui , Keiichiro Yasu , Chosaku Noda , Kazuto Kuroda , Masahiro Saito
发明人： Nobuaki Kaji , Kazuo Watabe , Takashi Usui , Keiichiro Yasu , Chosaku Noda , Kazuto Kuroda , Masahiro Saito
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , H01S5/0428
摘要： According to one embodiment, a laser drive circuit which supplies a drive current to a laser element which outputs light at a predetermined wavelength, and a laser control circuit which supplies a predetermined timing pulse for generation of relaxation oscillation in a laser drive current supplied to the laser drive circuit, the laser control circuit supplying a laser drive current higher than a threshold value which is supplied from the laser drive circuit to the laser element to enable laser light to be output from the laser element, the laser control circuit setting the laser drive current to a level lower than the threshold value on the basis of the timing pulse.
摘要翻译：根据一个实施例，提供驱动电流到激光元件的激光驱动电路，激光元件输出预定波长的光;以及激光控制电路，其提供预定的定时脉冲，以产生提供给激光驱动电路，激光控制电路提供高于从激光驱动电路提供给激光元件的阈值的激光驱动电流，以使激光能够从激光元件输出，激光控制电路设置激光驱动基于定时脉冲将电流电流降至低于阈值的电平。

6. 发明申请

US20080101205A1 OPTICAL DISC APPARATUS AND LASER-POWER CONTROL METHOD THEREFOR 审中-公开
标题翻译：光盘设备及其激光功率控制方法
公开(公告)号：US20080101205A1
公开(公告)日：2008-05-01
申请号：US11928123
申请日：2007-10-30
申请人： Takashi Usui , Kazuto Kuroda
发明人： Takashi Usui , Kazuto Kuroda
IPC分类号： G11B7/00
CPC分类号： G11B7/1263
摘要： An optical disc apparatus includes a laser-light emitting element configured to emit laser light onto a writable and readable optical disc, a power detecting unit configured to detect a light power of the laser light emitted from the laser-light emitting element, and a power control unit configured to control a driving amount for the laser-light emitting element by feedback control so that the detected light power coincides with a target light power. The power control unit holds a driving amount obtained during a previous recording period until a current recording period, and uses the held driving amount as an initial driving amount for the feedback control in the current recording period when the current recording period starts.
摘要翻译：一种光盘装置，包括：激光发光元件，被配置为向可写和可读光盘发射激光;功率检测单元，被配置为检测从激光发射元件发射的激光的光功率;以及功率控制单元，被配置为通过反馈控制来控制激光发光元件的驱动量，使得检测到的光功率与目标光功率一致。功率控制单元保持在前一个记录周期中获得的驱动量，直到当前记录周期，并且在当前记录周期开始的当前记录周期中，将保持的驱动量用作反馈控制的初始驱动量。

7. 发明申请

US20080056086A1 LASER DRIVER CIRCUIT AND OPTICAL DISC DEVICE INCLUDING THE LASER DRIVER CIRCUIT 审中-公开
标题翻译：激光驱动电路和光盘装置，包括激光驱动电路
公开(公告)号：US20080056086A1
公开(公告)日：2008-03-06
申请号：US11848045
申请日：2007-08-30
申请人： Kazuto Kuroda
发明人： Kazuto Kuroda
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/22 , G11B2007/0006
摘要： In order to compute a set value for a laser driver circuit for obtaining laser light having a predetermined irradiation power by using a calibration coefficient indicating manufacturing errors. In an optical disc device including a laser driver circuit according to the present invention, a laser diode emits laser light, a front monitor photo diode receives the emitted laser light to generate a reception light signal, an APC unit of the laser driver circuit compares the thus generated reception light signal with a target value related to the predetermined irradiation power previously set in the laser light to be emitted, a drive of the laser diode is controlled to match the signal to the target value, and a CPU uses at least one calibration coefficient to compute the set value for matching the reception light signal to the target value.
摘要翻译：为了通过使用指示制造误差的校准系数来计算用于获得具有预定照射功率的激光的激光驱动电路的设定值。在包括根据本发明的激光驱动电路的光盘装置中，激光二极管发射激光，前监视光电二极管接收发射的激光以产生接收光信号，激光驱动电路的APC单元将从而产生具有预先设定在要发射的激光中的预定照射功率的目标值的接收光信号，激光二极管的驱动被控制以将信号与目标值相匹配，并且CPU使用至少一个校准系数来计算用于将接收光信号与目标值匹配的设定值。

8. 发明申请

US20050117483A1 Optical disk apparatus and information reproducing method 审中-公开
标题翻译：光盘装置和信息再现方法
公开(公告)号：US20050117483A1
公开(公告)日：2005-06-02
申请号：US10995542
申请日：2004-11-24
申请人： Emi Maruyama , Kazuto Kuroda , Toshihiko Kaneshige
发明人： Emi Maruyama , Kazuto Kuroda , Toshihiko Kaneshige
IPC分类号： G11B20/10 , G11B7/00 , G11B7/005 , G11B7/007 , G11B27/10
CPC分类号： G11B7/00736 , G11B2007/0013
摘要： An information storage medium has a system lead-in area and a data lead-in area, and an area identifying circuit identifies whether a light beam irradiation area of an optical pickup head is at the system lead-in area or at the data lead-in area based on a reproduction signal provided from the optical pickup head. The area identifying circuit identifies the respective areas by using the number of zero crossings obtained from a signal, for example, into which the reproduction signal is binarized. An information reproducing circuit reproduces information from the reproduction signal based on the identified result by the area identifying circuit.
摘要翻译：信息存储介质具有系统导入区和数据导入区，区域识别电路识别光学拾取头的光束照射区域是否在系统导入区或数据导入区，基于从光学拾取头提供的再现信号。区域识别电路通过使用从例如再现信号二值化的信号获得的过零点数来识别各个区域。信息再现电路根据区域识别电路的识别结果从再现信号再现信息。

9. 发明授权

US08593926B2 Information storage device, information recording medium, and information storage method 失效
标题翻译：信息存储装置，信息记录介质和信息存储方法
公开(公告)号：US08593926B2
公开(公告)日：2013-11-26
申请号：US13353474
申请日：2012-01-19
申请人： Kazuo Watabe , Kazuto Kuroda , Takashi Usui , Hideaki Okano
发明人： Kazuo Watabe , Kazuto Kuroda , Takashi Usui , Hideaki Okano
IPC分类号： G11B7/00
CPC分类号： G11B7/083 , G03H1/2286 , G03H2222/34 , G11B7/0065 , G11B7/09 , G11B7/1381 , G11B2007/0009
摘要： An information storage device includes an information recording medium, at least a single light source that emits laser light, an illuminating unit that illuminates substantially the same position of the information recording medium with two light rays generated from the laser light, in different directions, a light detecting unit that detects reflection light of the two light rays reflected from the information recording medium and outputs a detection signal, an operation unit that calculates position error information of the information recording medium based on the detection signal; and, a driving device that changes the position of the information recording medium based on the position error information.
摘要翻译：信息存储装置包括：信息记录介质，至少一个发射激光的光源;照明单元，其以不同方向从激光产生的两束光照射基本相同位置的信息记录介质; 光检测单元，其检测从信息记录介质反射的两个光线的反射光并输出检测信号;运算单元，其基于检测信号计算信息记录介质的位置误差信息; 以及基于位置误差信息改变信息记录介质的位置的驱动装置。

10. 发明申请

US20120140606A1 INFORMATION STORAGE DEVICE, INFORMATION RECORDING MEDIUM, AND INFORMATION STORAGE METHOD 失效
标题翻译：信息存储设备，信息记录介质和信息存储方法
公开(公告)号：US20120140606A1
公开(公告)日：2012-06-07
申请号：US13353474
申请日：2012-01-19
申请人： Kazuo Watabe , Kazuto Kuroda , Takashi Usui , Hideaki Okano
发明人： Kazuo Watabe , Kazuto Kuroda , Takashi Usui , Hideaki Okano
IPC分类号： G11B7/0065
CPC分类号： G11B7/083 , G03H1/2286 , G03H2222/34 , G11B7/0065 , G11B7/09 , G11B7/1381 , G11B2007/0009
摘要： An information storage device includes an information recording medium, at least a single light source that emits laser light, an illuminating unit that illuminates substantially the same position of the information recording medium with two light rays generated from the laser light, in different directions, a light detecting unit that detects reflection light of the two light rays reflected from the information recording medium and outputs a detection signal, an operation unit that calculates position error information of the information recording medium based on the detection signal; and, a driving device that changes the position of the information recording medium based on the position error information.
摘要翻译：信息存储装置包括：信息记录介质，至少一个发射激光的光源;照明单元，其以不同方向从激光产生的两束光照射基本相同位置的信息记录介质; 光检测单元，其检测从信息记录介质反射的两个光线的反射光并输出检测信号;运算单元，其基于检测信号计算信息记录介质的位置误差信息; 以及基于位置误差信息改变信息记录介质的位置的驱动装置。

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