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1. 发明申请

US20060120232A1 Information recording medium and information recording device 审中-公开
标题翻译：信息记录介质和信息记录装置
公开(公告)号：US20060120232A1
公开(公告)日：2006-06-08
申请号：US10542853
申请日：2003-12-25
申请人： Naoharu Yanagawa , Tatsuhiro Yone , Masahiro Kato , Akira Shirota , Kunihiko Horikawa , Eiji Muramatsu
发明人： Naoharu Yanagawa , Tatsuhiro Yone , Masahiro Kato , Akira Shirota , Kunihiko Horikawa , Eiji Muramatsu
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/00736 , G11B7/00745 , G11B7/0901 , G11B7/094 , G11B7/24085
摘要： A tracking servo control device for making a tracking servo control to apply a light beam onto a groove track on a recording medium where the groove track and a pre-pit are preformed, is provided with: a first generation device which generates a first regenerative signal based on a reflected light from the recording medium when at least a part of the pre-pit is formed within a radiation range of the light beam onto the groove track; a second generation device which generates a second regenerative signal based on a reflected light from the recording medium when the pre-pit is formed outside the radiation range of the light beam; and a calculation device which calculates an offset value in the tracking servo control based on the first regenerative signal and the second regenerative signal that are generated.
摘要翻译：一种用于进行跟踪伺服控制的跟踪伺服控制装置设置有：第一生成装置，其产生第一再生信号，所述跟踪伺服控制装置用于进行跟踪伺服控制，以将光束施加到预定凹槽轨道和预凹坑的记录介质上的凹槽轨道上当所述光束的至少一部分在所述凹槽轨道的辐射范围内形成时，基于来自所述记录介质的反射光; 第二代装置，当预制坑形成在光束的辐射范围之外时，基于来自记录介质的反射光产生第二再生信号; 以及计算装置，其基于所生成的第一再生信号和第二再生信号，计算跟踪伺服控制中的偏移值。

2. 发明授权

US07274644B2 Information recording device and information recording method 失效
标题翻译：信息记录装置和信息记录方法
公开(公告)号：US07274644B2
公开(公告)日：2007-09-25
申请号：US10525766
申请日：2003-08-27
申请人： Kunihiko Horikawa , Akira Shirota , Masahiro Kato , Eiji Muramatsu , Shoji Taniguchi
发明人： Kunihiko Horikawa , Akira Shirota , Masahiro Kato , Eiji Muramatsu , Shoji Taniguchi
IPC分类号： G11B20/10
CPC分类号： G11B7/1263 , G11B7/00456 , G11B7/0062 , G11B7/0956
摘要： When a bias power level of a recording pulse waveform is varied entirely or partially, a shape of the recording pulse wave form is varied according to the variation. For example, when the bias power level is increased, a width or an edge position of a top pulse or a multi-pulse of the recording pulse waveform is varied correspondingly. Thereby, a total heat quantity of a recording laser light is not increased, and a preferable recording characteristic is maintained.
摘要翻译：当记录脉冲波形的偏置功率电平完全或部分地变化时，记录脉冲波形的形状根据变化而变化。例如，当偏置功率电平增加时，记录脉冲波形的顶部脉冲或多脉冲的宽度或边缘位置相应地变化。因此，记录激光的总热量不增加，并且保持优选的记录特性。

3. 发明申请

US20060007832A1 Information recording device and information recording method 失效
标题翻译：信息记录装置和信息记录方法
公开(公告)号：US20060007832A1
公开(公告)日：2006-01-12
申请号：US10525766
申请日：2003-08-27
申请人： Kunihiko Horikawa , Akira Shirota , Masahiro Kato , Eiji Muramatsu , Shoji Taniguchi
发明人： Kunihiko Horikawa , Akira Shirota , Masahiro Kato , Eiji Muramatsu , Shoji Taniguchi
IPC分类号： G11B20/10
CPC分类号： G11B7/1263 , G11B7/00456 , G11B7/0062 , G11B7/0956
摘要： When a bias power level of a recording pulse waveform is varied entirely or partially, a shape of the recording pulse wave form is varied according to the variation. For example, when the bias power level is increased, a width or an edge position of a top pulse or a multi-pulse of the recording pulse waveform is varied correspondingly. Thereby, a total heat quantity of a recording laser light is not increased, and a preferable recording characteristic is maintained.
摘要翻译：当记录脉冲波形的偏置功率电平完全或部分地变化时，记录脉冲波形的形状根据变化而变化。例如，当偏置功率电平增加时，记录脉冲波形的顶部脉冲或多脉冲的宽度或边缘位置相应地变化。因此，记录激光的总热量不增加，并且保持优选的记录特性。

4. 发明授权

US06801488B2 Pre-pit detecting apparatus for optical recording medium 失效
标题翻译：光记录媒体预坑检测装置
公开(公告)号：US06801488B2
公开(公告)日：2004-10-05
申请号：US10062557
申请日：2002-02-05
申请人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B509
CPC分类号： G11B27/3027 , G11B7/0053 , G11B27/24 , G11B2220/216 , G11B2220/218 , G11B2220/2562
摘要： A pre-pit detecting apparatus which, when a light beam is radiated onto an optical recording medium having a recording surface with pre-pits repeatedly formed between tracks, receives light reflected by the recording surface with first and second light receiving faces, obtains the push-pull signal corresponding to the light receiving signals for the first and second light receiving faces, samples the push-pull signal to collect sample data for a predetermined period, and sets a threshold value between the maximum value of data corresponding to a track and the minimum value of data corresponding to a pre-pit, of the collected sample data.
摘要翻译：一种预凹坑检测装置，当将光束照射到具有在轨迹之间重复形成的预凹坑的记录表面的光记录介质上时，接收由第一和第二光接收面由记录表面反射的光，获得推对应于第一和第二光接收面的光接收信号的抽样信号，采样推挽信号以收集采样数据一段预定的时间，并且将对应于轨道的数据的最大值与收集的样本数据的与预坑相对应的数据的最小值。

5. 发明授权

US07099255B2 Error counting apparatus for counting an error number of a pre-pit signal in an optical disc and method therefor 有权
标题翻译：用于对光盘中的预凹陷信号的错误数进行计数的误差计数装置及其方法
公开(公告)号：US07099255B2
公开(公告)日：2006-08-29
申请号：US10139394
申请日：2002-05-07
申请人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B7/00
CPC分类号： G11B27/34 , G11B7/00375 , G11B20/1803 , G11B27/36 , G11B2220/216 , G11B2220/2562
摘要： In an error counting apparatus and method, there are provided a reproducing section for reproducing the optical disc and a counter for counting the error number of the pre-pit signal based on an output of the reproducing section. When it is detected that the reproducing section come up to the reproduction of the emboss portion, a counting operation of the counter is started in response to this detection. When it is detected that the reproducing section has reproduced the optical disc in the predetermined interval after the counting operation is started, the counting operation of the counter is stopped in response to this detection.
摘要翻译：在误差计数装置和方法中，提供了一种用于再现光盘的再现部分和用于根据再现部分的输出对预制凹坑信号的误差数进行计数的计数器。当检测到再现部分达到压花部分的再现时，响应于该检测开始计数器的计数操作。当检测到再现部分在计数操作开始之后以预定间隔再现光盘时，响应于该检测停止计数器的计数操作。

6. 发明授权

US06928041B2 Pre-pit detecting apparatus for optical recording medium 失效
标题翻译：光记录媒体预坑检测装置
公开(公告)号：US06928041B2
公开(公告)日：2005-08-09
申请号：US10062556
申请日：2002-02-05
申请人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B7/005 , G11B7/007 , G11B19/12
CPC分类号： G11B19/12 , G11B7/005 , G11B7/00745
摘要： A pre-pit detecting apparatus which, when a light beam is radiated onto an optical recording medium having a recording surface with pre-pits repeatedly formed between tracks, receives light reflected by the recording surface with first and second light receiving faces, obtains the push-pull signal corresponding to the light receiving signals for the first and second light receiving faces, and binarizes the push-pull signal by using a threshold value to generate a pre-pit detection signal. It is judged which area of a plurality of areas including at least a not-yet-recorded area corresponds to a position of the recording surface where the light beam is radiated is performed to judge. Then the threshold value is set in accordance with the judgement result.
摘要翻译：一种预凹坑检测装置，当将光束照射到具有在轨迹之间重复形成的预凹坑的记录表面的光记录介质上时，接收由第一和第二光接收面由记录表面反射的光，获得推 - 对应于第一和第二光接收面的光接收信号的Pull信号，并且通过使用阈值来二值化推挽信号以产生预凹坑检测信号。判断包括至少未记录区域的多个区域的哪个区域对应于执行光束的记录表面的位置来判断。然后根据判断结果设定阈值。

7. 发明授权

US06954418B2 APPARATUS FOR ADJUSTING SIGNAL LEVELS DERIVED FROM AN OPTICAL DISC TO BECOME EQUAL TO A REFERENCE LEVEL DETERMINED FROM AT LEAST ONE OF THE SIGNAL LEVELS OF THE SIGNALS AND FOR SYNTHESIZING THE SIGNALS 有权
标题翻译：用于调整从光盘衍生的信号水平的装置将其等同于从信号的信号水平和信号合成中的至少一个确定的参考水平
公开(公告)号：US06954418B2
公开(公告)日：2005-10-11
申请号：US10067539
申请日：2002-02-07
申请人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B7/005 , G11B7/09 , G11B7/00
CPC分类号： G11B7/0943 , G11B7/0941
摘要： A plurality of light receiving detectors receive a plurality of segments of a beam returning from an optical disc when a reading beam of light is radiated to the optical disc. An optical pickup assembly produces a plurality of signals from the beam segments in accordance with, for instance, optical intensities of the beam segments. A level adjusting circuit adjusts signal levels of these signals such that each of the signal levels of the signals becomes equal to a reference level. The reference level is determined from at least one of the signal levels of the received beam segments.
摘要翻译：当读取光束被辐射到光盘时，多个光接收检测器接收从光盘返回的光束的多个段。光拾取器组件根据例如光束段的光强度从光束段产生多个信号。电平调整电路调节这些信号的信号电平，使得信号的每个信号电平等于参考电平。参考电平由接收的光束段的信号电平中的至少一个确定。

8. 发明授权

US06956802B2 Aperture ratio measuring apparatus for optical recording medium with pre-pits 有权
标题翻译：具有预凹坑的光学记录介质的孔径比测量装置
公开(公告)号：US06956802B2
公开(公告)日：2005-10-18
申请号：US10079041
申请日：2002-02-21
申请人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Masahiro Kato , Naoharu Yanagawa , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B7/004 , G11B7/0037 , G11B7/005 , G11B7/26 , G06F15/00
CPC分类号： G11B7/268 , G11B7/00375 , G11B7/0053
摘要： An AR measuring apparatus receives the reflection light of an optical beam irradiated on an optical recording medium having a recording surface on which pre-pits are repeatedly formed between tracks by means of a first light receiving surface and a second light receiving surface, obtains a push-pull signal based on the difference between light receiving signals from the first and second light receiving surfaces, collects sample data by sampling the push-pull signals for a predetermined period of time, repeats the sampling for the predetermined period of time by a plurality of times, determines whether or not each data value corresponding to a pre-pit position of the sample data by the plurality of times is obtained by a predetermined number of times or greater, and when data values obtained by the predetermined number of times or greater are determined, calculates as an aperture ratio, a ratio between the minimum value and the maximum value of values corresponding to a pre-pit component of the data values obtained by the predetermined number of times or greater.
摘要翻译： AR测量装置接收照射在具有通过第一光接收表面和第二光接收表面在轨道之间重复形成预凹坑的记录表面的光记录介质上的光束的反射光，获得推基于来自第一和第二光接收表面的光接收信号之间的差的脉冲信号通过在预定时间段内对推挽信号进行采样来收集采样数据，通过多个多次确定与样本数据的预凹坑位置相对应的多个数据值是否被获得预定次数以上，并且当通过预定次数以上获得的数据值为作为孔径比，计算最小值和对应于前置凹坑部件的值的最大值之间的比率 t的预定次数或更大的数据值。

9. 发明申请

US20050117503A1 Data reading device and pre-pit detection circuit 审中-公开
标题翻译：数据读取装置和预坑检测电路
公开(公告)号：US20050117503A1
公开(公告)日：2005-06-02
申请号：US10995415
申请日：2004-11-24
申请人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone
发明人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone
IPC分类号： G11B7/00 , G11B7/005 , G11B7/095
CPC分类号： G11B7/0053 , G11B7/0953
摘要： A data reading device which reads data recorded on a data recording medium on which pre-pits are formed in advance, includes a laser light source that emits a light beam, an objective lens that converges the light beam, an actuator that drives the objective lens, a light-receiving unit having first and second light-receiving regions split in a direction of recording tracks which receive a reflected light beam, an amplitude control unit that adjusts an amplitude of an output signal output from at least one of the first and second light-receiving regions, a computing unit that computes the output signal thereby generates a push-pull signal, a pre-pit detection unit that detects a pre-pit signal on basis of the push-pull signal, and an extraction unit that extracts an eccentricity component of the data recording medium. Preferably, the amplitude control unit adjusts the amplitude on basis of the eccentricity component.
摘要翻译：读取记录在预先形成预凹坑的数据记录介质上的数据的数据读取装置包括发射光束的激光光源，会聚光束的物镜，驱动物镜的致动器，具有在接收反射光束的记录轨道的方向上分割的第一和第二光接收区域的光接收单元，调整从第一和第二信号中的至少一个输出的输出信号的幅度的幅度控制单元光接收区域，计算输出信号从而产生推挽信号的计算单元，基于推挽信号检测预凹陷信号的预凹坑检测单元，以及提取单元，数据记录介质的偏心分量。优选地，振幅控制单元基于偏心分量来调节振幅。

10. 发明授权

US06865143B2 Optical device including a calibrating unit for calibrating a level adjusting unit 失效
标题翻译：光学装置，包括用于校准电平调节单元的校准单元
公开(公告)号：US06865143B2
公开(公告)日：2005-03-08
申请号：US10109647
申请日：2002-04-01
申请人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
发明人： Naoharu Yanagawa , Masahiro Kato , Tatsuhiro Yone , Yuko Muramatsu , Shinji Suzuki
IPC分类号： G11B7/09 , G11B7/08
CPC分类号： G11B7/094 , G11B7/0943 , G11B7/0945
摘要： An optically recorded information recording and/or reading apparatus which eliminates the influence of stray light occurring within an optical system. In a state or a focus state which is forcedly set to position a reading point outside the outermost periphery of a disk surface, and the signal level is adjusted in a signal combiner circuit such that a light receiving level at that time matches a desired level.
摘要翻译：一种光学记录信息记录和/或读取装置，其消除在光学系统内发生的杂散光的影响。在强制设置将读取点定位在盘表面的最外周边的状态或焦点状态下，并且在信号组合器电路中调整信号电平，使得此时的光接收电平与期望的电平相匹配。

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