公开(公告)号：US20080159101A1

公开(公告)日：2008-07-03

申请号：US11840716

申请日：2007-08-17

申请人： Masahiro Saito ,  Kazuto Kuroda ,  Takashi Usui

发明人： Masahiro Saito ,  Kazuto Kuroda ,  Takashi Usui

IPC分类号： G11B7/00

CPC分类号： G11B7/093 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0956 ,  G11B11/10576

摘要： Disclosed is an optical disk device including: an objective lens unit having an objective lens and a lens holder; an elastic supporting member supporting displaceably the objective lens unit on a body of an optical head; first and second drive sections applying respectively driving forces to first and second driven positions on the objective lens unit opposed across a position of a center of mass of the objective lens unit in a direction orthogonal to an optical axis of the objective lens; and a driving force adjustment section adjusting allocation of the driving forces respectively applied to the first and second driven positions so that a possible influence of a displacement force in a tilt direction on a displacement force in a focusing direction at the position of the center of mass when the displacement forces act on the objective lens unit is avoided.

摘要翻译： 公开了一种光盘装置，包括：具有物镜和透镜保持器的物镜单元; 弹性支撑构件，其将所述物镜单元可移动地支撑在光学头的主体上; 第一驱动部和第二驱动部将与物镜的质心的位置对置的物镜的第一和第二驱动位置分别施加到与物镜的光轴正交的方向上的驱动力; 以及驱动力调节部，调整分别施加到第一和第二被驱动位置的驱动力的分配，使得倾斜方向上的位移力对聚焦方向上的位移力在质心位置的可能影响 当避免了作用在物镜单元上的位移力时。

公开(公告)号：US20060171276A1

公开(公告)日：2006-08-03

申请号：US11328263

申请日：2006-01-10

申请人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

发明人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： G11B7/00736 ,  G11B27/034 ,  G11B27/24

摘要： An attempt is made to make it possible to efficiently perform the finalizing process and closing process in a short period of time. When the border closing or finalizing process is performed after user data is recorded, latest recording management data (RMD) is recorded in a recording management data duplication zone (RDZ) of a data lead-in area, latest recording management data (RMD) is recorded in an unrecorded area of a present recording management zone (RMZ) and R physical format information (R-PFI) is recorded in an R physical format information zone (R-PFIZ) in a first step and a padding process is performed for at least a discontinuous area in the data area and a border-out is lastly recorded in a second step.

摘要翻译： 尝试使其能够在短时间内有效地执行最终处理和结束处理。 当在记录用户数据之后执行边界关闭或完成处理时，最新记录管理数据（RMD）被记录在数据导入区的记录管理数据复制区（RDZ）中，最新的记录管理数据（RMD）是 记录在当前记录管理区域（RMZ）的未记录区域中，并且R物理格式信息（R-PFI）被记录在R物理格式信息区域（R-PFIZ）中，并且执行填充处理 在第二步骤中最后记录数据区域中的不连续区域和边界输出。

公开(公告)号：US20060171277A1

公开(公告)日：2006-08-03

申请号：US11328264

申请日：2006-01-10

申请人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

发明人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： G11B27/034 ,  G11B27/105 ,  G11B27/24 ,  G11B27/329

摘要： An attempt is made to make it possible to efficiently perform the finalizing process and closing process in a short period of time and securely manage the last address of a border-out. When the border closing or finalizing process is performed after user data is recorded, a padding process is performed for at least a discontinuous area in the data area and a border-out is lastly recorded in a first step. Then, in a second step, latest recording management data (RMD) is recorded in a recording management data duplication zone (RDZ) of a data lead-in area, latest recording management data (RMD) is recorded in an unrecorded area of a present recording management zone (RMZ) and R physical format information (R-PFI) is recorded in an R physical format information zone (R-PFIZ).

摘要翻译： 试图使得能够在短时间内有效地执行完成处理和结束处理，并且可以安全地管理边界的最后地址。 当在记录用户数据之后执行边界关闭或完成处理时，对数据区域中的至少不连续区域执行填充处理，并且在第一步骤中最后记录边界输出。 然后，在第二步骤中，最新的记录管理数据（RMD）被记录在数据导入区的记录管理数据复制区（RDZ）中，最新的记录管理数据（RMD）被记录在当前的未记录区 记录管理区（RMZ）和R物理格式信息（R-PFI）被记录在R物理格式信息区（R-PFIZ）中。

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。

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。

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 。

公开(公告)号：US20080101428A1

公开(公告)日：2008-05-01

申请号：US11929717

申请日：2007-10-30

申请人： Toshiaki Ohgushi ,  Kazuto Kuroda ,  Takashi Usui

发明人： Toshiaki Ohgushi ,  Kazuto Kuroda ,  Takashi Usui

IPC分类号： H01S5/00 ,  G11B7/125

CPC分类号： G11B7/1263 ,  G11B7/00456

摘要： In a laser-power control method, a power of laser light emitted from a laser-light emitting element and a driving current for driving the laser-light emitting element are detected. An approximate expression indicating a driving-current to light-power characteristic of the laser-light emitting element is updated on the basis of the detected light power and the detected driving current while sequentially increasing accuracy. A command driving current corresponding to a target light power is calculated by using the updated approximate expression. The laser-light emitting element is driven on the basis of the calculated command driving current so as to output the target light power.

摘要翻译： 在激光功率控制方法中，检测从激光发射元件发射的激光的功率和用于驱动激光发光元件的驱动电流。 基于检测到的光功率和检测到的驱动电流来更新表示激光发光元件的驱动电流到光功率特性的近似表达，同时依次提高精度。 通过使用更新的近似表达式来计算对应于目标光功率的命令驱动电流。 基于计算出的指令驱动电流驱动激光发光元件，以输出目标光功率。

公开(公告)号：US20120051201A1

公开(公告)日：2012-03-01

申请号：US13071592

申请日：2011-03-25

申请人： Kazuo Watabe ,  Akihito Ogawa ,  Hideaki Okano ,  Takashi Usui

发明人： Kazuo Watabe ,  Akihito Ogawa ,  Hideaki Okano ,  Takashi Usui

IPC分类号： G11B27/22

CPC分类号： G11B7/00781 ,  G11B7/0065 ,  G11B7/083

摘要： According to one embodiment, a data reproducing apparatus includes a data recording medium, light source unit, light application unit, photodetector unit and control unit. An address mark string including address marks is formed on the data recording medium. The address marks are spaced from each other by a distance depending on address data. The light application unit is configured to split the light beam into a first branch light beam and a second branch light beam and apply the first and second branch light beams to the address mark string at different angles. The photodetector unit is configured to detect first reflected light beams and second reflected light beams from the address mark string to generate image data. The first and second reflected light beams result from the first and second branch light beams, respectively. The control unit is configured to reproduce address data based on the image data.

摘要翻译： 根据一个实施例，数据再现装置包括数据记录介质，光源单元，光应用单元，光电检测器单元和控制单元。 包括地址标记的地址标记串形成在数据记录介质上。 地址标记根据地址数据彼此间隔一定距离。 光施加单元被配置为将光束分成第一分支光束和第二分支光束，并且以不同的角度将第一和第二分支光束施加到地址标记串。 光检测器单元被配置为从地址标记串检测第一反射光束和第二反射光束以产生图像数据。 第一和第二反射光束分别由第一和第二分支光束产生。 控制单元被配置为基于图像数据再现地址数据。

公开(公告)号：US09064506B2

公开(公告)日：2015-06-23

申请号：US13618173

申请日：2012-09-14

申请人： Hideaki Okano ,  Kazuo Watabe ,  Chikara Tanioka ,  Akihito Ogawa ,  Takashi Usui ,  Kazuaki Doi

发明人： Hideaki Okano ,  Kazuo Watabe ,  Chikara Tanioka ,  Akihito Ogawa ,  Takashi Usui ,  Kazuaki Doi

IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0901 ,  G11B7/0938 ,  G11B2007/0013

摘要： According to one embodiment, an information recording and reproducing apparatus including, a focus control module, an objective lens control module, a calculation module, and a tracking control module. If, detection the recording marks line, to focus a laser light of a second wavelength to the recording layer through an objective lens and to operation a recording layer tracking control using a tracking error signal taken out from a second reflected light and a laser light of a first wavelength to a track groove through the objective lens and to operation a guide layer tracking control to control the objective lens using a tracking error signal taken out from a first reflected light.

摘要翻译： 根据一个实施例，一种信息记录和再现装置，包括聚焦控制模块，物镜控制模块，计算模块和跟踪控制模块。 如果检测记录标记线，则通过物镜将第二波长的激光聚焦到记录层，并且使用从第二反射光和第二反射光的激光中取出的跟踪误差信号来操作记录层跟踪控制 通过物镜的轨道槽的第一波长，并且使用从第一反射光取出的跟踪误差信号来操作引导层跟踪控制来控制物镜。

公开(公告)号：US20130094343A1

公开(公告)日：2013-04-18

申请号：US13688805

申请日：2012-11-29

申请人： Akihito OGAWA ,  Kazuo Watabe ,  Chikara Tanioka ,  Hideaki Okano ,  Takashi Usui ,  Kazuaki Doi

发明人： Akihito OGAWA ,  Kazuo Watabe ,  Chikara Tanioka ,  Hideaki Okano ,  Takashi Usui ,  Kazuaki Doi

IPC分类号： G11B23/00

CPC分类号： G11B23/0035 ,  G11B7/00736 ,  G11B7/1267 ,  G11B7/24038 ,  G11B7/2405 ,  G11B7/24073 ,  G11B7/24082 ,  G11B20/1217 ,  G11B2020/1227 ,  G11B2020/1268 ,  G11B2220/235 ,  G11B2220/2537

摘要： According to one embodiment, an information recording medium characterized by including, a first servo layer, a second servo layer, and a data layer, the information recording medium further including, a first spiral track and a second spiral track formed between the first servo layer and the second servo layer and spiraling in opposite directions.

摘要翻译： 根据一个实施例，一种信息记录介质，其特征在于包括第一伺服层，第二伺服层和数据层，所述信息记录介质还包括第一螺旋磁道和形成在第一伺服层 和第二伺服层，螺旋方向相反。