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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 发明申请

US20080144453A1 Optical disc apparatus and recording power control method 审中-公开
标题翻译：光盘装置和记录功率控制方法
公开(公告)号：US20080144453A1
公开(公告)日：2008-06-19
申请号：US11809164
申请日：2007-05-31
申请人： Takashi Usui , Kazuto Kuroda , Masashi Ueno
发明人： Takashi Usui , Kazuto Kuroda , Masashi Ueno
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/00456
摘要： According to one embodiment, in a data write operation, the average value of the emission power detected by a front monitor is obtained via a low-pass filter and a sample hold circuit. In the write operation, erase power controlled by an erase APC is obtained via a sample hold circuit. While an LD is emitting light with the erase power, an erase current is determined from the output voltage of the erase APC. On the basis of the average power, the erase power, the erase current, and a waveform of the recording pulse, a current-to-emission-power characteristic of the LD is estimated. Furthermore, on the basis of the current-to-emission-power characteristic, the peak power in the write operation of the LD are controlled.
摘要翻译：根据一个实施例，在数据写入操作中，通过低通滤波器和采样保持电路获得由前监视器检测的发射功率的平均值。在写操作中，通过采样保持电路获得由擦除APC控制的擦除功率。当LD以擦除功率发光时，从擦除APC的输出电压确定擦除电流。基于平均功率，擦除功率，擦除电流和记录脉冲的波形，估计LD的电流 - 发射功率特性。此外，基于电流 - 发射功率特性，控制LD的写入动作中的峰值功率。

7. 发明申请

US20090109816A1 OPTICAL DISC APPARATUS 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：US20090109816A1
公开(公告)日：2009-04-30
申请号：US12256365
申请日：2008-10-22
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, a calibration section controls an LD driving section so as to carry out test writing on a recording layer of an optical disc using a light pulse having relaxation oscillation, irradiates the test-written area with a reproduction laser beam so as to detect reflected light, and determine write strategy based on the detected result. A recording process is executed on the optical disc by using the light pulse having relaxation oscillation based on the write strategy determined by the calibration section.
摘要翻译：根据一个实施例，校准部分控制LD驱动部分，以便使用具有弛豫振荡的光脉冲对光盘的记录层进行测试写入，用再现激光束照射测试写入区域，以便检测反射光，并根据检测结果确定写入策略。通过使用基于由校准部确定的写入策略的具有弛豫振荡的光脉冲在光盘上执行记录处理。

8. 发明申请

US20120008476A1 INFORMATION REPRODUCTION APPARATUS AND METHOD FOR CONTROLLING SAME 审中-公开
标题翻译：信息再现装置及其控制方法
公开(公告)号：US20120008476A1
公开(公告)日：2012-01-12
申请号：US13238612
申请日：2011-09-21
申请人： Kazuto Kuroda , Kazuo Watabe , Hideaki Okano , Akihito Ogawa , Takashi Usui
发明人： Kazuto Kuroda , Kazuo Watabe , Hideaki Okano , Akihito Ogawa , Takashi Usui
IPC分类号： G11B7/135
CPC分类号： G11B7/083 , G11B7/08564 , G11B7/09 , G11B7/127
摘要： According to one embodiment, an information reproduction apparatus includes an information acquisition unit, an error detection unit, and a control unit. The information acquisition unit is configured to irradiate a reference beam, convert the reference beam into a luminance signal, and output the luminance signal when reproducing an information recording Medium. The error detection unit is configured to detect at least one selected from a first error and a second error by extracting a feature extraction quantity from the luminance signal. The first error is of an irradiation angle of the reference beam. The second error is of at least one selected from a temperature and a wavelength of the reference beam. The control unit is configured to control at least one selected from the irradiation angle and the at least one selected from the reproduction temperature and the wavelength of the reference beam using the second error.
摘要翻译：根据一个实施例，信息再现设备包括信息获取单元，错误检测单元和控制单元。信息获取单元被配置为照射参考光束，将参考光束转换成亮度信号，并且在再现信息记录介质时输出亮度信号。误差检测单元被配置为通过从亮度信号提取特征提取量来检测从第一误差和第二误差中选出的至少一个。第一误差是参考光束的照射角度。第二误差是从参考光束的温度和波长中选出的至少一个。控制单元被配置为使用第二误差来控制从照射角度和从再现温度和参考光束的波长中选择的至少一个中选择的至少一个。

9. 发明授权

US08077586B2 Optical recording head device, optical recording apparatus, and recording method 有权
标题翻译：光记录头装置，光记录装置和记录方法
公开(公告)号：US08077586B2
公开(公告)日：2011-12-13
申请号：US12257213
申请日：2008-10-23
申请人： Kazuo Watabe , Takashi Usui , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Nobuaki Kaji , Masahiro Saito
发明人： Kazuo Watabe , Takashi Usui , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Nobuaki Kaji , Masahiro Saito
IPC分类号： G11B7/00
CPC分类号： G11B7/127 , G11B7/0045 , G11B7/006
摘要： According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.
摘要翻译：根据一个实施例，光记录头装置包括一个光源，其输出这样的弛豫振荡光脉冲，单脉冲的半高全宽为820ps或更小，用于驱动光源的驱动单元，将来自光源的发射光会聚在记录介质的记录层上并捕获由记录介质的记录层反射的反射光，放置在光源和物镜之间的分配单元，用于分布以及光检测单元，用于经由分配单元接收由记录介质的记录层反射的反射光，其中光源的谐振器长度为6560μm以下。

10. 发明申请

US20090059746A1 LASER OUTPUT CONTROL DEVICE, INFORMATION RECORDING AND REPRODUCING DEVICE, AND LASER OUTPUT CONTROL METHOD 审中-公开
标题翻译：激光输出控制装置，信息记录和再现装置以及激光输出控制方法
公开(公告)号：US20090059746A1
公开(公告)日：2009-03-05
申请号：US12201617
申请日：2008-08-29
申请人： Kazuto Kuroda , Takashi Usui
发明人： Kazuto Kuroda , Takashi Usui
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B7/0045
摘要： According to one embodiment, to solve a new problem which has been produced due to adoption of a recording method using relaxation oscillation, the laser output control device suppresses unnecessary relaxation oscillation while increasing an averaged light quantity between recording pulses to obtain reflected light quantity which is necessary for tracking and focus controlling. A laser modulation control circuit includes a recording pulse output unit which outputs recording pulses for making relaxation oscillation as the recording pulses, a bias current output unit which outputs a constant bias current between the recording pulses, and a high-frequency overlap unit which overlaps the high-frequency signal on the constant bias current between the recording pulses, and controls so as to have times at which current values at a start edge and an end edge of the high-frequency signal are almost consistent with a value of the constant bias current.
摘要翻译：根据一个实施例，为了解决由于采用使用松弛振荡的记录方法而产生的新问题，激光输出控制装置抑制不必要的松弛振荡，同时增加记录脉冲之间的平均光量，以获得反射光量跟踪和聚焦控制所必需的。激光调制控制电路包括输出记录脉冲作为记录脉冲的记录脉冲的记录脉冲输出单元，在记录脉冲之间输出恒定偏置电流的偏置电流输出单元和与记录脉冲重叠的高频重叠单元高频信号对记录脉冲之间的恒定偏置电流进行控制，并进行控制，以使得高频信号的起始边缘和末端边缘处的电流值几乎与恒定偏置电流的值一致。

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