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21. 发明授权

US06044049A Optical information apparatus employing two different tracking error signals based on regions on information medium 失效
标题翻译：光信息装置采用基于信息介质上的区域的两种不同的跟踪误差信号
公开(公告)号：US06044049A
公开(公告)日：2000-03-28
申请号：US951140
申请日：1997-10-15
申请人： Kenji Fujiune , Mitsuro Moriya , Hiroyuki Yamaguchi , Shin-ichi Yamada , Katsuya Watanabe
发明人： Kenji Fujiune , Mitsuro Moriya , Hiroyuki Yamaguchi , Shin-ichi Yamada , Katsuya Watanabe
IPC分类号： G11B7/007 , G11B7/085 , G11B7/09 , G11B7/095 , G11B19/12 , G11B7/00
CPC分类号： G11B19/12 , G11B7/08505 , G11B7/0901 , G11B7/00718
摘要： An optical information apparatus for performing at least one of a reproduction operation and a recording operation for an information medium by radiating a light beam on the information medium is provided, wherein the information medium has a first region, including a first track having information recorded thereon in the form of convex and concave pits, and a second region, including a second track formed in the form of convex and concave guide grooves. The apparatus includes: first tracking error detection component for detecting an error in position between the light beam and the first track in the first region; second tracking error detection component for detecting an error in position between the light beam and the second track in the second region; tracking control component for performing tracking control for locating the light beam on a predetermined track; determination component for determining whether the light beam is located in the first region or the second region; and switching component for selecting either one of an output signal of the first tracking error detection component or an output signal of the second tracking error detection component based on a result of determination by the determination component, and sending the selected output signal to the tracking control component.
摘要翻译：提供了一种用于通过在信息介质上照射光束来进行信息介质的再现操作和记录操作中的至少一个的光学信息设备，其中信息介质具有第一区域，其包括具有记录在其上的信息的第一轨道呈凹凸形状的第二区域，以及第二区域，该第二区域包括以凸形和凹形引导槽形式形成的第二轨道。该装置包括：第一跟踪误差检测部件，用于检测第一区域中的光束与第一轨道之间的位置误差; 第二跟踪误差检测部件，用于检测第二区域中的光束与第二光道之间的位置误差; 跟踪控制部件，用于执行用于将光束定位在预定轨道上的跟踪控制; 确定部件，用于确定光束是否位于第一区域或第二区域中; 以及用于基于所述确定部件的确定结果来选择所述第一跟踪误差检测部件的输出信号中的任一个或所述第二跟踪误差检测部件的输出信号的开关部件，以及将所选择的输出信号发送到所述跟踪控制零件。

22. 发明授权

US07379398B2 Optical disc apparatus, an optical disc method, and a semiconductor integrated circuit capable of adjusting a focus position of a light beam and a spherical aberration 有权
标题翻译：光盘装置，光盘方法和能够调节光束的聚焦位置和球面像差的半导体集成电路
公开(公告)号：US07379398B2
公开(公告)日：2008-05-27
申请号：US11006179
申请日：2004-12-07
申请人： Takeshi Shimamoto , Shin-ichi Yamada , Shin-ichi Kadowaki , Yuuichi Kuze , Kenji Kondo , Katsuya Watanabe
发明人： Takeshi Shimamoto , Shin-ichi Yamada , Shin-ichi Kadowaki , Yuuichi Kuze , Kenji Kondo , Katsuya Watanabe
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/13925
摘要： An optical disc apparatus includes a control section. The control section performs a first search while the tracking control is in the off state. The first search is for searching for a plurality of sets of the focus positions of the light beam and the spherical aberration amounts such that an amplitude of the tracking error signal is greater than a predetermined value. The control section performs a second search while the tracking control is in the on state. The second search is for determining a set of the focus position of the light beam and the spherical aberration amount such that the reproduced signal quality index is substantially optimal, among the plurality of sets of the focus positions of the light beam and the spherical aberration amounts obtained in the first search.
摘要翻译：光盘装置包括控制部。控制部在跟踪控制处于关闭状态时进行第一次搜索。第一搜索用于搜索光束的多组聚焦位置和球面像差量，使得跟踪误差信号的幅度大于预定值。当跟踪控制处于接通状态时，控制部执行第二次搜索。第二搜索用于确定光束的聚焦位置和球面像差量的集合，使得重放信号质量指数基本上是最佳的，在光束的多组聚焦位置和球面像差量之间在第一次搜索中获得。

23. 发明授权

US07307933B2 Optical disc drive 失效
标题翻译：光盘驱动器
公开(公告)号：US07307933B2
公开(公告)日：2007-12-11
申请号：US10499226
申请日：2003-01-20
申请人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
发明人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
IPC分类号： G11B7/125 , G11B7/09
CPC分类号： G11B19/127 , G11B7/0945 , G11B7/1267 , G11B7/13925 , G11B2007/13727
摘要： An optical disc drive according to the present invention reads and/or writes data from/on an optical disc having at least one information layer with a light beam and includes: a spherical aberration detecting section for generating a spherical aberration signal representing a spherical aberration produced at a focal point of the light beam on the information layer of the disc; a spherical aberration changing section for changing the spherical aberration; a spherical aberration regulating section for generating an aberration correction signal to correct the spherical aberration by driving the changing section; and means for detecting a value of the aberration correction signal that minimizes the spherical aberration when the focal point of the light beam is located on the information layer of the disc and for detecting the depth of the information layer, which corresponds to a distance from the information layer on which the focal point of the light beam is located to the surface of the disc, based on the value.
摘要翻译：根据本发明的光盘驱动器从具有至少一个具有光束的信息层的光盘上读出数据，并且包括：球面像差检测部分，用于产生表示产生的球面像差的球面像差信号在盘的信息层上的光束的焦点处; 用于改变球面像差的球面像差变化部分; 球面像差调节部分，用于通过驱动所述变化部分产生像差校正信号以校正球面像差; 以及用于检测当光束的焦点位于盘的信息层上并用于检测信息层的深度时使球面像差最小化的像差校正信号的值的装置，其对应于距离信息层，光束的焦点位于光盘的表面上，基于该值。

24. 发明申请

US20070258337A1 Optical disc apparatus 审中-公开
公开(公告)号：US20070258337A1
公开(公告)日：2007-11-08
申请号：US11825004
申请日：2007-07-03
申请人： Kenji Fujiune , Yuuichi Kuze , Shin-ichi Yamada , Katsuya Watanabe
发明人： Kenji Fujiune , Yuuichi Kuze , Shin-ichi Yamada , Katsuya Watanabe
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B7/0946 , G11B7/24082
摘要： An optical disk apparatus having a high reliability by evading collision between a condensing lens and an optical disk regardless whether the focus control is in the operative state or in the inoperative state, thereby preventing damage to the condensing lens and the optical disk. When the focus control is in the inoperative state, by using a reflection light amount from the optical disk (1), it is ascertained that the focus of the light beam is in the vicinity of the information surface and the condensing lens (15) is driven to be apart from the optical disk (1).

25. 发明申请

US20070253305A1 Optical Disk Apparatus 有权
标题翻译：光盘装置
公开(公告)号：US20070253305A1
公开(公告)日：2007-11-01
申请号：US11575312
申请日：2005-10-20
申请人： Katsuya Watanabe , Akira Yoshikawa , Shin-ichi Yamada , Junichi Minamino
发明人： Katsuya Watanabe , Akira Yoshikawa , Shin-ichi Yamada , Junichi Minamino
IPC分类号： G11B7/09
CPC分类号： G11B7/0948 , G11B7/0941 , G11B2007/0013
摘要： An optical disk apparatus according to the present invention is capable of reading data from an optical disk 102 which has a plurality of information recording layers, including a first information recording layer whose distance from a disk surface is relatively small and a second information recording layer whose distance from the disk surface is relatively large. This optical disk apparatus includes: a focus control section 117 for causing a converging point of the light beam to be positioned on an arbitrary information recording layer of the optical disk 102; a tracking control section 118 for causing the converging point of the light beam to be positioned on a predetermined track of the information recording layer; and a gain switching section 108 capable of changing gain characteristics of at least one of the focus control section 117 and the tracking control section 118. The gain switching section 108 prescribes a gain crossover frequency when reading data from the first information recording layer to be a value which is lower than a gain crossover frequency when reading data from the second information recording layer.
摘要翻译：根据本发明的光盘装置能够从具有多个信息记录层的光盘102读取数据，该多个信息记录层包括与盘表面的距离相对较小的第一信息记录层和第二信息记录层，距磁盘表面的距离比较大。该光盘装置包括：聚焦控制部117，用于使光束的会聚点位于光盘102的任意信息记录层上; 跟踪控制部分118，用于使光束的会聚点定位在信息记录层的预定轨道上; 以及能够改变焦点控制部分117和跟踪控制部分118中的至少一个的增益特性的增益切换部分108.增益切换部分108规定从第一信息记录层读取数据时的增益交叉频率为该值在从第二信息记录层读取数据时低于增益交叉频率。

26. 发明授权

US07242648B2 Tracking error signal generation device, optical disc apparatus, tracking error signal generation method and tracking control method 失效
标题翻译：跟踪误差信号发生装置，光盘装置，跟踪误差信号产生方法和跟踪控制方法
公开(公告)号：US07242648B2
公开(公告)日：2007-07-10
申请号：US10784318
申请日：2004-02-20
申请人： Shin-ichi Yamada , Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Akira Yoshikawa
发明人： Shin-ichi Yamada , Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Akira Yoshikawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0953 , G11B7/0903
摘要： A tracking error signal generation device includes a splitting and convergence section for splitting an optical beam into a main beam and a sub beam; a two-portion main beam detection section for detecting the main beam; a main beam push-pull signal generation section for generating a main beam push-pull signal; a two-portion sub beam detection section for detecting the sub beam; a sub beam push-pull signal generation section for generating a sub beam push-pull signal; a displacement amount detection section for detecting a displacement amount of the main beam push-pull signal from a reference value based on the main beam push-pull signal and the sub beam push-pull signal; and a tracking error signal generation section for generating a tracking error signal by correcting either the main beam push-pull signal or the sub beam push-pull signal based on the displacement amount.
摘要翻译：跟踪误差信号产生装置包括用于将光束分解成主光束和子光束的分离和会聚部分; 用于检测主光束的两部分主光束检测部分; 用于产生主光束推挽信号的主光束推挽信号产生部分; 用于检测子光束的两部分子光束检测部分; 子波束推挽信号产生部分，用于产生子波束推挽信号; 位移量检测部分，用于基于主光束推挽信号和子光束推挽信号，从基准值检测主光束推挽信号的位移量; 以及跟踪误差信号产生部分，用于通过基于位移量校正主光束推挽信号或子光束推挽信号来产生跟踪误差信号。

27. 发明申请

US20050083798A1 Optical disc unit 失效
标题翻译：光盘单元
公开(公告)号：US20050083798A1
公开(公告)日：2005-04-21
申请号：US10499226
申请日：2003-01-20
申请人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
发明人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
IPC分类号： G11B7/1392 , G11B7/00 , G11B19/12
CPC分类号： G11B19/127 , G11B7/0945 , G11B7/1267 , G11B7/13925 , G11B2007/13727
摘要： An optical disc drive according to the present invention reads and/or writes data from/on an optical disc having at least one information layer with a light beam and includes: a spherical aberration detecting section for generating a spherical aberration signal representing a spherical aberration produced at a focal point of the light beam on the information layer of the disc; a spherical aberration changing section for changing the spherical aberration; a spherical aberration regulating section for generating an aberration correction signal to correct the spherical aberration by driving the changing section; and means for detecting a value of the aberration correction signal that minimizes the spherical aberration when the focal point of the light beam is located on the information layer of the disc and for detecting the depth of the information layer, which corresponds to a distance from the information layer on which the focal point of the light beam is located to the surface of the disc, based on the value.
摘要翻译：根据本发明的光盘驱动器从具有至少一个具有光束的信息层的光盘上读出数据，并且包括：球面像差检测部分，用于产生表示产生的球面像差的球面像差信号在盘的信息层上的光束的焦点处; 用于改变球面像差的球面像差变化部分; 球面像差调节部分，用于通过驱动所述变化部分产生像差校正信号以校正所述球面像差; 以及用于检测当光束的焦点位于盘的信息层上并用于检测信息层的深度时使球面像差最小化的像差校正信号的值的装置，其对应于距离信息层，光束的焦点位于光盘的表面上，基于该值。

28. 发明申请

US20050047291A1 Optical disc apparatus and spherical aberration correction controlling apparatus 失效
标题翻译：光盘装置和球面像差校正控制装置
公开(公告)号：US20050047291A1
公开(公告)日：2005-03-03
申请号：US10931373
申请日：2004-09-01
申请人： Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Shin-ichi Yamada
发明人： Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Shin-ichi Yamada
IPC分类号： G02B13/24 , G11B7/00 , G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0956 , G11B7/131 , G11B7/1374 , G11B7/1378 , G11B7/13927 , G11B2007/13727
摘要： An optical disc apparatus is provided, which comprises a lens tilting section for tilting an objective lens to correct coma aberration occurring in a light beam spot focused on an information surface of an optical disc, a spherical aberration correcting section for correcting spherical aberration occurring in a light beam spot focused on the information surface, and a lens tilt-spherical aberration correction control section for controlling the spherical aberration correcting section to change an amount of spherical aberration correction performed by the spherical aberration correcting section depending on a tilt of the objective lens tilted by the lens tilting section.
摘要翻译：提供了一种光盘装置，其包括透镜倾斜部分，用于倾斜物镜以校正聚焦在光盘的信息表面上的光束点中发生的彗形像差;球面像差校正部分，用于校正在聚焦在信息表面上的光束斑点和透镜倾斜球面像差校正控制部分，用于控制球面像差校正部分，以根据倾斜的物镜的倾斜度改变由球面像差校正部分执行的球面像差校正量由透镜倾斜部分。

29. 发明授权

US06317395B1 Optical disc device for varying PLL characteristic and servo characteristic based on actual reproduction speed 失效
标题翻译：用于根据实际再现速度改变PLL特性和伺服特性的光盘装置
公开(公告)号：US06317395B1
公开(公告)日：2001-11-13
申请号：US09217831
申请日：1998-12-22
申请人： Takeharu Yamamoto , Katsuya Watanabe , Mitsurou Moriya , Takashi Kishimoto
发明人： Takeharu Yamamoto , Katsuya Watanabe , Mitsurou Moriya , Takashi Kishimoto
IPC分类号： G11B700
CPC分类号： G11B7/0908 , G11B7/0941
摘要： The object of the present invention is to realize a stable control and a stable signal reproduction in an optical disc device. When a head unit (110) is shifted in a radial direction or a reproduction speed is varied, a reproduction speed is detected based on a radial position at which the head unit is located and the number of rotaions of a motor (111), and settings of a focusing gain, a tracking gain, an amplification factor of an equalizer circuit (130), a band-limited frequency, a loop gain of a PLL circuit (131) and a divide ratio are varied based on said reproduction speed. Further, an accurate detection of an out of focus operation can be executed by using either one signal of a reflected-light quantity, an RF signal amplitude and a drive of a focusing actuator, or combined signals thereof. Thereby, a stable control and signal reproduction can be provided.
摘要翻译：本发明的目的是在光盘装置中实现稳定的控制和稳定的信号再现。当头单元（110）沿径向移动或再现速度变化时，基于头单元所在的径向位置和马达（111）的旋转数目来检测再现速度，并且基于所述再现速度，改变聚焦增益，跟踪增益，均衡器电路（130）的放大系数，带限频率，PLL电路（131）的环路增益和分频比的设置。此外，可以通过使用反射光量的一个信号，RF信号幅度和聚焦致动器的驱动器或其组合信号来执行对焦操作的精确检测。从而可以提供稳定的控制和信号再现。

30. 发明授权

US5343454A Tracking control apparatus for correcting tracking error signal according to approximate equation of a function of track address 失效
标题翻译：跟踪控制装置，用于根据轨道地址的函数的近似方程校正跟踪误差信号
公开(公告)号：US5343454A
公开(公告)日：1994-08-30
申请号：US980560
申请日：1992-11-23
申请人： Katsuya Watanabe , Masayuki Shibano , Hiroyuki Yamaguchi , Yasuaki Edahiro , Mitsuro Moriya
发明人： Katsuya Watanabe , Masayuki Shibano , Hiroyuki Yamaguchi , Yasuaki Edahiro , Mitsuro Moriya
IPC分类号： G11B7/09 , G11B7/00
CPC分类号： G11B7/094
摘要： In a tracking control apparatus, a tracking error signal having a level of a positional shift of a beam of light projected through an optical head onto a recording medium is detected based on a reflected light from the recording medium, and the optical head is controlled so that a beam of light scans on the track to be recorded or reproduced based on the tracking error signal. Offset values of the tracking error signal on adjustment tracks which are predetermined among a plurality of tracks of the recording medium are detected, and then coefficients of a predetermined approximate equation approximately representing an offset value characteristic on the track based on the detected offset values are calculated. Further, an offset value corresponding to the track to be recorded or reproduced is calculated based on the first approximate equation with the calculated coefficients, and an offset value of the tracking error signal is corrected based on the calculated offset value.
摘要翻译：在跟踪控制装置中，基于来自记录介质的反射光检测具有通过光头投影到记录介质上的光束的位置偏移水平的跟踪误差信号，并且将光头控制为基于跟踪误差信号，光束在轨道上扫描以被记录或再现。检测在记录介质的多个轨道中预定的调整轨道上的跟踪误差信号的偏移值，然后计算出近似表示基于检测到的偏移值的轨道上的偏移值特性的预定近似方程式的系数。此外，基于具有所计算的系数的第一近似等式计算与要记录或再现的轨道相对应的偏移值，并且基于所计算的偏移值来校正跟踪误差信号的偏移值。

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