公开(公告)号：US07848201B2

公开(公告)日：2010-12-07

申请号：US12153808

申请日：2008-05-23

申请人： Kenya Yokoi

发明人： Kenya Yokoi

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/0062

摘要： In an information recording method and apparatus, when performing recording by using multiple pulses defined by erase powers Pe1 and Pe2 for forming a space part between mark parts, the set values of the erase powers Pe1 and Pe2 are updated at predetermined intervals in accordance with a recording linear velocity.

摘要翻译： 在信息记录方法和装置中，当通过使用由擦除功率Pe1和Pe2定义的多个脉冲进行记录以在标记部分之间形成空格部分时，按照预定间隔更新擦除功率Pe1和Pe2的设定值， 记录线速度。

公开(公告)号：US20080253253A1

公开(公告)日：2008-10-16

申请号：US12153808

申请日：2008-05-23

申请人： Kenya Yokoi

发明人： Kenya Yokoi

IPC分类号： G11B7/0045

CPC分类号： G11B7/1263 ,  G11B7/0062

摘要： In an information recording method and apparatus, when performing recording by using multiple pulses defined by erase powers Pe1 and Pe2 for forming a space part between mark parts, the set values of the erase powers Pe1 and Pe2 are updated at predetermined intervals in accordance with a recording linear velocity.

摘要翻译： 在信息记录方法和装置中，当通过使用由擦除功率Pe 1和Pe 2定义的多个脉冲进行记录以形成标记部分之间的空间部分时，以预定间隔更新擦除功率Pe 1和Pe 2的设定值 根据记录线速度。

公开(公告)号：US07313075B2

公开(公告)日：2007-12-25

申请号：US10408367

申请日：2003-04-08

申请人： Naruhiro Masui ,  Kenya Yokoi

发明人： Naruhiro Masui ,  Kenya Yokoi

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  G11B7/0045

摘要： An optical information recording method and apparatus which records information on a recording medium by irradiating the recording medium with an irradiation light of a recording power to form a recorded-mark on the recording medium such that reflection coefficient from an area of the recorded-mark is different than a reflection coefficient from an area of the recording medium where the recorded-mark is not formed by a changing power of the irradiation light. Information is recorded by modulating the irradiation light according to the information for recording, forming a recorded-mark on the recording medium by changing the power of the irradiation light between a recording power and a non-recording power, receiving reflection light of the irradiation light reflected by the recording medium and producing a corresponding light signal, determining a state of the recorded-mark based upon the light signal produced during a predetermined period of time immediately after the irradiation light changes from the recording power to the non-recording power, and controlling the recording power of the irradiation light according to the state of the recorded-mark.

摘要翻译： 一种光学信息记录方法和装置，其通过用记录功率的照射光照射记录介质以在记录介质上形成记录标记，使得来自记录标记的区域的反射系数为 不同于来自记录介质的区域的反射系数，其中记录标记不由照射光的变化的功率形成。 通过根据用于记录的信息调制照射光来记录信息，通过改变记录功率和非记录功率之间的照射光的功率，在记录介质上形成记录标记，接收照射光的反射光 由记录介质反射并产生对应的光信号，基于在照射光从记录功率改变到非记录功率之后的预定时间段期间产生的光信号来确定记录标记的状态，以及 根据记录标记的状态控制照射光的记录功率。

公开(公告)号：US20050259549A1

公开(公告)日：2005-11-24

申请号：US10641285

申请日：2003-08-15

申请人： Kenya Yokoi

发明人： Kenya Yokoi

IPC分类号： G11B7/0045 ,  G11B7/125

CPC分类号： G11B7/126 ,  G11B7/0045

摘要： A disk apparatus performs optical recording onto an optical disk with a record mark by using a light beam modulated in a manner of multi-pulse series, includes. A detection pulse generating part generates a detection pulse to replace the multi-pulse series; and a detection power control part controls the power of the detection pulse to be smaller than the power of the multi-pulse series.

摘要翻译： 包括通过使用以多脉冲序列调制的光束，在具有记录标记的光盘上执行光学记录。 检测脉冲产生部分产生检测脉冲来代替多脉冲串; 并且检测功率控制部分将检测脉冲的功率控制为小于多脉冲序列的功率。

公开(公告)号：US07885155B2

公开(公告)日：2011-02-08

申请号：US11826129

申请日：2007-07-12

申请人： Kenya Yokoi ,  Ryosuke Kasahara

发明人： Kenya Yokoi ,  Ryosuke Kasahara

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/005 ,  G11B7/00736

摘要： A data readout method is disclosed that is able to read data from an optical disk capable of super resolution readout with high accuracy. The data readout method allows reading data recorded in an optical disk by irradiating a laser beam onto the optical disk. The method includes the steps of varying a light emission power level of the laser beam while the laser beam is irradiated onto the optical disk, and acquiring a reflectivity of the optical disk corresponding to each light emission power level; calculating a second derivative of a curve representing correlation between the reflectivity and the light emission power with respect to the light emission power; calculating an extreme value of the second derivative; and calculating an optimum readout power level for super resolution readout based on the extreme value.

摘要翻译： 公开了一种数据读出方法，其能够以高精度从能够进行超分辨率读出的光盘中读取数据。 数据读出方法允许通过将光束照射到光盘来读取记录在光盘中的数据。 该方法包括以下步骤：在激光束照射到光盘上时改变激光束的发光功率电平，并且获取与每个发光功率电平对应的光盘的反射率; 计算表示相对于发光功率的反射率和发光功率之间的相关性的曲线的二次导数; 计算二阶导数的极值; 以及基于极值计算用于超分辨率读出的最佳读出功率电平。

公开(公告)号：US07426166B2

公开(公告)日：2008-09-16

申请号：US10875167

申请日：2004-06-25

申请人： Kenya Yokoi

发明人： Kenya Yokoi

IPC分类号： G11B5/09

CPC分类号： G11B7/1263 ,  G11B7/0062

摘要： In an information recording method and apparatus, when performing recording by using multiple pulses defined by erase powers Pe1 and Pe2 for forming a space part between mark parts, the set values of the erase powers Pe1 and Pe2 are updated at predetermined intervals in accordance with a recording linear velocity.

摘要翻译： 在信息记录方法和装置中，当通过使用由擦除功率Pe 1和Pe 2定义的多个脉冲进行记录以形成标记部分之间的空间部分时，以预定间隔更新擦除功率Pe 1和Pe 2的设定值 根据记录线速度。

公开(公告)号：US07420901B2

公开(公告)日：2008-09-02

申请号：US10538072

申请日：2003-12-08

申请人： Kenya Yokoi

发明人： Kenya Yokoi

IPC分类号： G11B7/00

CPC分类号： G11B7/1267

摘要： The present invention discloses an optical information recording method of an optical information recording and reproduction device that uses a semiconductor laser to record or reproduce data in an optical disk. Based on a detected value of an optical path difference of the optical disk, a calculated value of optimum recording power for recording data or an object value of recording power when data are being recorded is corrected. In addition, when calculating the optimum recording power before recording data in the optical disk, an optimum index (β) indicating the optimum recording power is corrected with respect to a predetermined first index, and the corrected optimum index is used as the calculated value of the optimum recording power Pwo. The predetermined first index is obtained by reproducing a trial write region which is recorded with recording power being varied stepwise.

摘要翻译： 本发明公开了一种使用半导体激光器在光盘中记录或再现数据的光信息记录和再现装置的光学信息记录方法。 基于光盘的光程差的检测值，校正记录数据的最佳记录功率的计算值或记录数据时的记录功率的目标值。 此外，当在光盘中记录数据之前计算最佳记录功率时，相对于预定的第一指数校正指示最佳记录功率的最佳指标（β），并且将校正后的最佳指标用作计算值 最佳录音功率Pwo。 通过再现以逐步变化的记录功率记录的试写区域来获得预定的第一索引。

公开(公告)号：US20060245336A1

公开(公告)日：2006-11-02

申请号：US10541591

申请日：2004-10-15

申请人： Kenya Yokoi ,  Naruhiro Masui

发明人： Kenya Yokoi ,  Naruhiro Masui

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/0062 ,  G11B7/00736

摘要： [Problem to be Solved]Accurate recording is achieved by obtaining each optimum pulse width and pulse edge position in a recording method that performs recording according to the rules of recording waveform using different pulse widths and pulse edge positions for individual data length sets with respect to the data length sets having the different relationship between the number of pulses and the data length. [Means for Solving the Problem]The first trial write process obtains an optimum recording power of a test pattern (S1 through S3) even with respect to data having different rules for the recording waveforms corresponding n type data length sets, and the second trial write process using this optimum recording power obtains optimum pulse width or optimum pulse edge position separately for each data length set (S4 through S6). Based on the optimum recording power and optimum recording waveform obtained by these trial write processes, recording operation is performed so as to form all the data lengths with satisfactory accuracy, thereby making it possible to obtain a proper reproduced signal.

摘要翻译： [待解决的问题]通过在记录方法中获得每个最佳脉冲宽度和脉冲边缘位置来实现准确的记录，所述记录方法根据记录波形的规则，使用不同的脉冲宽度和脉冲边缘位置对于各个数据长度集相对于 数据长度集具有脉冲数与数据长度之间的不同关系。 [解决问题的手段]即使对于与n种数据长度集合对应的记录波形的规则不同的数据，第一试写法也能够获得测试图案的最佳记录功率（S 1至S 3），第二试写 使用该最佳记录功率的试写步骤分别为每个数据长度集合（S 4至S 6）分别获得最佳脉冲宽度或最佳脉冲边沿位置。 基于通过这些试写法处理获得的最佳记录功率和最佳记录波形，执行记录操作以便以令人满意的精度形成所有数据长度，从而可以获得适当的再现信号。

公开(公告)号：US20060013090A1

公开(公告)日：2006-01-19

申请号：US10538072

申请日：2003-12-08

申请人： Kenya Yokoi

发明人： Kenya Yokoi

IPC分类号： G11B7/12

CPC分类号： G11B7/1267

摘要： The present invention discloses an optical information recording method of an optical information recording and reproduction device that uses a semiconductor laser to record or reproduce data in an optical disk. Based on a detected value of an optical path difference of the optical disk, a calculated value of optimum recording power for recording data or an object value of recording power when data are being recorded is corrected. In addition, when calculating the optimum recording power before recording data in the optical disk, an optimum index (β) indicating the optimum recording power is corrected with respect to a predetermined first index, and the corrected optimum index is used as the calculated value of the optimum recording power Pwo. The predetermined first index is obtained by reproducing a trial write region which is recorded with recording power being varied stepwise.

摘要翻译： 本发明公开了一种使用半导体激光器在光盘中记录或再现数据的光信息记录和再现装置的光学信息记录方法。 基于光盘的光程差的检测值，校正记录数据的最佳记录功率的计算值或记录数据时的记录功率的目标值。 此外，当在光盘中记录数据之前计算最佳记录功率时，相对于预定的第一指数校正指示最佳记录功率的最佳指标（β），并且将校正后的最佳指标用作计算值 最佳录音功率Pwo。 通过再现以逐步变化的记录功率记录的试写区域来获得预定的第一索引。

公开(公告)号：US4984873A

公开(公告)日：1991-01-15

申请号：US238510

申请日：1988-08-31

申请人： Yasuyuki Takiguchi ,  Akihiko Kanemoto ,  Kenya Yokoi ,  Haruo Iimura ,  Takamichi Enomoto ,  Sumio Kamoi

发明人： Yasuyuki Takiguchi ,  Akihiko Kanemoto ,  Kenya Yokoi ,  Haruo Iimura ,  Takamichi Enomoto ,  Sumio Kamoi

IPC分类号： G02F1/13363

CPC分类号： G02F1/13363 ,  G02F2202/40 ,  G02F2413/01 ,  G02F2413/08

摘要： A liquid crystal display device, comprising:(a) a liquid crystal layer disposed between a pair of light permeable substrates, an alignment of a liquid crystal of said liquid crystal layer being substantially horizontal relative to said substrates in the absence of applied voltage, said liquid crystal layer having a twisted structure with a twist angle along a direction of a thickness thereof such that an adequate display is provided without substantially reducing the time dimensional driving;(b) a pair of polarization means disposed on both outsides of said liquid crystal layer; and(c) at least one birefringent medium layer disposed between one side of said liquid crystal layer and the polarization means on said one side of said liquid crystal layer; an optical axis of said birefringent medium layer being inclined toward a polarization axis of the adjacent polarization means, the alignment direction of said liquid crystal on a surface of another side of said liquid crystal layer making an angle from 0.degree. to 25.degree. relative to the polarization transmission axis or an absorption axis of the polarization means, the direction of a maximum refractive index of said birefringent medium layer and the alignment direction of said liquid crystal on a surface of said one side of said liquid crystal layer on a surface of said one side of said liquid crystal layer making an angle from 20.degree. to 130.degree. while a retardation of said birefringent medium layer is in a range of 0.125 .pi.rad to 1 .pi.rad and a retardation of said liquid crystal layer is about 3/2 .pi.rad or about 2 .pi.rad.

摘要翻译： 一种液晶显示装置，包括：（a）设置在一对透光性基板之间的液晶层，在没有施加电压的情况下，所述液晶层的液晶相对于所述基板基本水平的对准，所述 具有沿其厚度方向具有扭曲角的扭曲结构的液晶层，使得在不显着减小时间驱动的情况下提供适当的显示; （b）设置在所述液晶层的两侧的一对偏振装置; 和（c）设置在所述液晶层的一侧和所述液晶层的所述一侧上的偏振装置之间的至少一个双折射介质层; 所述双折射介质层的光轴朝向相邻偏振装置的偏振轴倾斜，所述液晶层的另一面的表面上的对准方向相对于所述液晶层的角度为0°至25° 偏振透射轴或偏振装置的吸收轴，所述双折射介质层的最大折射率方向和所述液晶层的所述液晶层的所述一面的表面上的所述液晶的取向方向 所述液晶层的一侧为20°至130°的角度，而所述双折射介质层的延迟在0.125pirad至1pirad的范围内，并且所述液晶层的延迟为约3/2 pi 或约2 pi rad。