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1. 发明授权

US07859965B2 Recording device and method, reproducing device and method, recording/reproducing device and method, and computer program 失效
标题翻译：记录装置和方法，再现装置和方法，记录/再现装置和方法以及计算机程序
公开(公告)号：US07859965B2
公开(公告)日：2010-12-28
申请号：US11918052
申请日：2006-04-06
申请人： Naoharu Yanagawa , Masufumi Asada , Kunihiko Horikawa , Akira Shirota
发明人： Naoharu Yanagawa , Masufumi Asada , Kunihiko Horikawa , Akira Shirota
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/0941 , G11B7/0948 , G11B7/0953 , G11B7/0956
摘要： A recording device (1T or the like) is provided with (i) recording elements (50, 40) for recording data by irradiating a recording medium with laser beams; (ii) driving members (33T, 33F, 55T, 55F, 54) for performing tracking process or focusing process; (iii) a servo elements (31T, 31F) for automatically controlling the driving members based on an error signal; (iv) specifying elements (21, 22) for specifying an area where a recording medium characteristic (core eccentricity or the like) is not good, based on a high frequency component included in the error signal; and (v) a control unit (10) for (v-i) controlling the servo unit to change the gain in the automatic control, and for (v-ii) controlling the recording elements to change the recording power of the laser beams, in the specified area.
摘要翻译：记录装置（1T等）设置有：（i）通过用激光束照射记录介质来记录数据的记录元件（50,40）; （ii）用于执行跟踪处理或聚焦处理的驱动构件（33T，33F，55T，55F，54）（iii）用于基于误差信号自动控制驱动部件的伺服元件（31T，31F）（iv）基于所述误差信号中包含的高频分量，指定用于指定记录介质特性（磁芯偏心度等）不好的区域的元件（21,22）; 以及（v）控制单元（10），用于（vi）控制所述伺服单元改变所述自动控制中的增益，并且（v-ii）控制所述记录元件以改变所述激光束的记录功率，指定区域。

2. 发明申请

US20090196130A1 INFORMATION RECORDING/REPRODUCING APPARATUS 审中-公开
标题翻译：信息记录/再现设备
公开(公告)号：US20090196130A1
公开(公告)日：2009-08-06
申请号：US12065535
申请日：2006-08-29
申请人： Naoharu Yanagawa , Akira Shirota
发明人： Naoharu Yanagawa , Akira Shirota
IPC分类号： G11B7/085
CPC分类号： G11B7/0941 , G11B7/0908
摘要： The present invention is directed to improve precision of tracking correction and focus correction while assuring stability of the tracking correction and focus correction during recording/reproducing of data to/from an optical disk.Before start of recording/reproduction, an optical disk DK is searched once. On the basis of a radial acceleration component in a tracking error signal Ste, an area where a mechanical distortion occurs in the optical disk DK is specified. At the time of actually recording/reproducing data to/from the optical disk DK, the gain in a tracking servo circuit TS is temporarily improved only at the time of recording/reproducing data to/from the area specified as an area where a mechanical distortion or the like occurs. Also, even in the case where the gain is varied by performing optimum phase compensation on the gain set by using an optimum phase compensation by-gain circuit 23, reliable phase compensation is realized. Concerning the focus correction, also, gain compensation and phase compensation are performed using a method similar to that of the tracking correction.
摘要翻译：本发明旨在提高跟踪校正和聚焦校正的精度，同时确保在向/从光盘记录/再现数据期间的跟踪校正和聚焦校正的稳定性。在开始记录/再现之前，一次搜索光盘DK。基于跟踪误差信号Ste中的径向加速度分量，指定在光盘DK中发生机械失真的区域。在向/从光盘DK实际记录/再现数据时，跟踪伺服电路TS中的增益仅在记录/再现数据时指定为区域的区域时暂时改善，其中机械失真等发生。此外，即使在通过使用最佳相位补偿旁路增益电路23对增益设置进行最佳相位补偿来改变增益的情况下，也可以实现可靠的相位补偿。关于聚焦校正，还使用与跟踪校正类似的方法来执行增益补偿和相位补偿。

3. 发明申请

US20090052302A1 Recording Apparatus and Recording Medium, and Computer Program 失效
标题翻译：记录设备和记录介质，以及计算机程序
公开(公告)号：US20090052302A1
公开(公告)日：2009-02-26
申请号：US11918345
申请日：2006-04-13
申请人： Naoharu Yanagawa , Akira Shirota
发明人： Naoharu Yanagawa , Akira Shirota
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/1353 , G11B7/1369 , G11B2007/0006
摘要： A recording apparatus includes: a recording device for recording data onto each of a plurality of types of recording media by irradiating a light beam corresponding to each of the types of recording media; a diffracting device disposed on an optical path of the light beam from the recording device to the recording medium, for generating a main beam and a plurality of sub beams by diffracting the optical beam, the main beam recording data and performing a tracking process, the sub beams performing the tracking process, an amplitude of a tracking signal generated by each or one portion of the sub beams and by the main beam being maximum; a controlling device for controlling the diffracting device to adjust a position on which each of the plurality of sub beams is focused, in accordance with the type of the recording medium; and a tracking device.
摘要翻译：记录装置包括：记录装置，用于通过照射与每种类型的记录介质对应的光束来将数据记录在多种类型的记录介质中的每一种上; 衍射装置，其设置在从记录装置到记录介质的光束的光路上，用于通过衍射光束，主光束记录数据和执行跟踪处理来生成主光束和多个子光束，执行跟踪处理的子光束，由子光束的每个或一部分以及主光束产生的跟踪信号的幅度最大; 控制装置，用于根据记录介质的类型，控制衍射装置调整多个子光束中的每一个被聚焦的位置; 和跟踪装置。

4. 发明申请

US20080259755A1 Information Recording Device and Method, and Computer Program 有权
标题翻译：信息记录装置和方法以及计算机程序
公开(公告)号：US20080259755A1
公开(公告)日：2008-10-23
申请号：US11596074
申请日：2005-05-09
申请人： Naoharu Yanagawa , Masahiro Kato
发明人： Naoharu Yanagawa , Masahiro Kato
IPC分类号： G11B7/12
CPC分类号： G11B7/00456 , G11B7/0062 , G11B7/1267
摘要： An information recording device (1) is provided with a recording element (501) for recording information in an information recording medium (100) wherein pre-information (LPP) is previously recorded for controlling recording of recording information, by irradiating laser beams (LB) of a prescribed power, and a control element (504) for controlling the recording element to record the recording information with a power which permits a first reproduction quality (AR characteristic), which is a pre-information reproduction quality, to satisfy a prescribed first standard.
摘要翻译：信息记录装置（1）具有用于在信息记录介质（100）中记录信息的记录元件（501），其中通过照射激光束（LB）预先记录预先信息（LPP）以控制记录信息的记录）和控制元件（504），用于控制记录元件以允许作为信息前再现质量的第一再现质量（AR特性）的功率来记录记录信息，以满足规定的功率第一标准。

5. 发明授权

US07042818B2 Device and method for controlling tilt servo 失效
公开(公告)号：US07042818B2
公开(公告)日：2006-05-09
申请号：US11174665
申请日：2005-07-06
申请人： Naoharu Yanagawa , Masahiro Kato
发明人： Naoharu Yanagawa , Masahiro Kato
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/0945 , G11B7/1369 , G11B2007/0006
摘要： A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium set in the apparatus, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a photo detector and a read signal generator for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device determines a type of the optical recording medium, generates a tilt drive signal so as to reduce a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam by a method for generating a tilt drive signal corresponding to the recording medium type, and drives a tilt angle adjuster for adjusting the tilt angle in accordance with the tilt drive signal.

6. 发明申请

US20050243673A1 Device and method for controlling tilt servo 失效
公开(公告)号：US20050243673A1
公开(公告)日：2005-11-03
申请号：US11174665
申请日：2005-07-06
申请人： Naoharu Yanagawa , Masahiro Kato
发明人： Naoharu Yanagawa , Masahiro Kato
IPC分类号： G11B7/004 , G11B7/00 , G11B7/09 , G11B7/095 , G11B7/135
CPC分类号： G11B7/0956 , G11B7/0945 , G11B7/1369 , G11B2007/0006
摘要： A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium set in the apparatus, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a photo detector and a read signal generator for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device determines a type of the optical recording medium, generates a tilt drive signal so as to reduce a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam by a method for generating a tilt drive signal corresponding to the recording medium type, and drives a tilt angle adjuster for adjusting the tilt angle in accordance with the tilt drive signal.

7. 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。

8. 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。

9. 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。

10. 发明授权

US06442115B1 Information recording apparatus 失效
标题翻译：信息记录装置
公开(公告)号：US06442115B1
公开(公告)日：2002-08-27
申请号：US09386338
申请日：1999-08-31
申请人： Yoshitaka Shimoda , Masayoshi Yoshida , Naoharu Yanagawa
发明人： Yoshitaka Shimoda , Masayoshi Yoshida , Naoharu Yanagawa
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/0045 , G11B19/28
摘要： An information recording apparatus (S) records record information onto an optical disc (1), which corresponds to a CLV (Constant Linear Velocity) method to keep a linear velocity of the optical disc constant when reproducing the record information from the optical disc. The information recording apparatus is provided with: an optical pickup (14) having a laser (14a) for irradiating a light beam (B) from the laser onto a record track of the optical disc and for detecting a reflected light from the optical disc; a rotation controlling device (11, 17 to 20) for rotation-controlling the optical disc to keep a rotation angular velocity of the optical disc constant when recording the record information onto the optical disc; and a laser drive controlling device (11, 15, 16) for obtaining an optimum value of a laser driving amount for the optical pickup in correspondence with a linear velocity of the record track of the rotation-controlled optical disc with respect to the optical pickup and for drive-controlling the laser by use of the obtained optimum value of the laser driving amount.
摘要翻译：信息记录装置（S）将记录信息记录到光盘（1）上，该记录信息对应于当从光盘再现记录信息时保持光盘的线速度恒定的CLV（恒定线速度）方法。信息记录装置具有：具有用于将来自激光的光束（B）照射到光盘的记录轨道上并用于检测来自光盘的反射光的激光器的光学拾取器（14）; 旋转控制装置（11,17至20），用于当将记录信息记录在光盘上时，旋转控制光盘以保持光盘的旋转角速度恒定; 以及激光驱动控制装置（11,15,16），用于根据旋转控制光盘的记录轨道相对于光学拾取器的线速度获得用于光学拾取器的激光驱动量的最佳值并且通过使用获得的激光驱动量的最佳值来驱动控制激光。

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