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1. 发明申请

US20090207523A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING APPARATUS 审中-公开
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US20090207523A1
公开(公告)日：2009-08-20
申请号：US12364125
申请日：2009-02-02
申请人： Takayuki Kawabe , Haruhiko Izumi , Yasuyuki Ozawa , Takuya Kamimura
发明人： Takayuki Kawabe , Haruhiko Izumi , Yasuyuki Ozawa , Takuya Kamimura
IPC分类号： G11B5/127 , G11B5/82
CPC分类号： G11B5/59655 , B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/855
摘要： A magnetic recording medium formed on a substrate. The magnetic recording medium includes a data region including a plurality of magnetic dots arranged at predetermined positions on the substrate, for recording information; and a servo region for specifying the positions of the magnetic dots, the servo region including a plurality of magnetic segments arranged at predetermined positions on the substrate, each of the magnetic segments being smaller than each of the magnetic dots.
摘要翻译：形成在基板上的磁记录介质。该磁记录介质包括一数据区，该数据区包括布置在该基板上的预定位置的多个磁点，用于记录信息; 以及用于指定磁点的位置的伺服区域，所述伺服区域包括布置在基板上的预定位置的多个磁段，每个磁段小于每个磁点。

2. 发明授权

US6026064A Head driving apparatus and optical disk apparatus 失效
标题翻译：头驱动装置和光盘装置
公开(公告)号：US6026064A
公开(公告)日：2000-02-15
申请号：US928301
申请日：1997-09-12
申请人： Haruhiko Izumi , Tadashi Sato , Takayuki Kawabe
发明人： Haruhiko Izumi , Tadashi Sato , Takayuki Kawabe
IPC分类号： G11B21/02 , G11B7/085 , G11B7/09 , G11B11/105 , H02K41/035
CPC分类号： G11B7/0925 , G11B7/08582 , H02K41/035 , G11B11/10571
摘要： A head driving apparatus has two yokes each having two generally parallel members which extend respectively in the direction generally perpendicular to the optical axis of a lens, and the yokes are disposed on both sides of the two side surfaces of the head. Two tubular head driving coils are fixed to the head and externally fitted on the member of each yoke, which is nearer to the head. At least a first magnet is fixed to the member of each yoke lying further from the head. A plurality of second magnets are fixed to the head and oppose the first magnets. The head is supported in a non-contact state by the repulsive forces of the first magnets and the second magnets, and the head is driven by energizing the head driving coils. An optical disk apparatus is equipped with the head driving apparatus.
摘要翻译：头驱动装置具有两个轭，每个轭具有两个大致平行的构件，它们分别沿着大致垂直于透镜的光轴的方向延伸，并且轭设置在头的两个侧表面的两侧。两个管状头部驱动线圈固定在头部上并且外部安装在更接近头部的每个轭的构件上。至少第一磁体固定在远离头部的每个轭的构件上。多个第二磁体被固定到磁头并与第一磁体相对。头部通过第一磁体和第二磁体的排斥力被支撑在非接触状态，并且通过激励磁头驱动线圈驱动磁头。光盘装置配备有头驱动装置。

3. 发明申请

US20090237829A1 INFORMATION RECORDING MEDIUM 审中-公开
标题翻译：信息记录媒体
公开(公告)号：US20090237829A1
公开(公告)日：2009-09-24
申请号：US12276022
申请日：2008-11-21
申请人： Yasuyuki Ozawa , Haruhiko Izumi
发明人： Yasuyuki Ozawa , Haruhiko Izumi
IPC分类号： G11B21/02 , G11B5/82
CPC分类号： G11B5/02 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/82 , G11B20/10009 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B2005/0005 , G11B2020/1281 , G11B2220/252
摘要： An information recording medium has a substrate, first recording dots, and second recording dots. The first recording dots are arranged in an array circumferentially in accordance with a predetermined regulation at mutual intervals in accordance with the regulation at a position in accordance with the regulation, and are used to magnetically record information. The second recording dots are arranged in an array circumferentially in accordance with the regulation at mutual intervals in accordance with the regulation. In the second recording dots, plural kinds of positions having different deviation amounts from the position in accordance with the regulation appear in one round of the array. The second recording dots are also used to magnetically record information.
摘要翻译：信息记录介质具有基板，第一记录点和第二记录点。第一记录点按照根据规定的位置处的规定，按照相互间隔的预定规则周向排列，并用于磁记录信息。根据规定，第二记录点按照相互间隔的规定沿周向排列成阵列。在第二记录点中，具有与根据调节的位置不同的偏移量的多种位置出现在阵列的一轮中。第二记录点也用于磁记录信息。

4. 发明申请

US20100123973A1 INFORMATION STORAGE MEDIUM AND INFORMATION STORAGE APPARATUS 审中-公开
标题翻译：信息存储介质和信息存储设备
公开(公告)号：US20100123973A1
公开(公告)日：2010-05-20
申请号：US12569717
申请日：2009-09-29
申请人： Yasuyuki Ozawa , Haruhiko Izumi
发明人： Yasuyuki Ozawa , Haruhiko Izumi
IPC分类号： G11B5/596
CPC分类号： G11B5/5965
摘要： According to one embodiment, an information storage medium includes a plurality of sectors arranged in a circumferential direction of a disk-shaped substrate, each sector having a servo pattern that is formed on the substrate and in which information indicating a position in a radial direction of the substrate is magnetically recorded, and a plurality of recording dots that is arranged with a predetermined pitch in the circumferential direction of the substrate and in which information is to be magnetically recorded. The servo pattern has a magnetic pattern arranged in the circumferential direction with a pitch having a predetermined integral ratio to the pitch of the recording dots. A recording dot arranged nearest to the servo pattern among the recording dots in each sector is arranged at a position having a constant phase relationship to the pitch of the servo pattern of the sector comprising the recording dots in any of the sectors.
摘要翻译：根据一个实施例，一种信息存储介质包括沿盘形基片的圆周方向布置的多个扇区，每个扇区具有形成在基板上的伺服图案，其中指示径向位置的信息对基板进行磁记录，并且在基板周向以规定的间距配置多个记录点，并记录信息。伺服图案具有沿圆周方向布置的磁性图案，其间距具有与记录点的间距成一定比例的间距。在每个扇区中的记录点之间最靠近伺服图案布置的记录点被布置在与包括任何扇区中的记录点的扇区的伺服图案的间距具有恒定相位关系的位置。

5. 发明授权

US06320832B1 Laser power control in information recording device 失效
标题翻译：信息记录装置中的激光功率控制
公开(公告)号：US06320832B1
公开(公告)日：2001-11-20
申请号：US09360970
申请日：1999-07-27
申请人： Yoshihiro Nakao , Haruhiko Izumi
发明人： Yoshihiro Nakao , Haruhiko Izumi
IPC分类号： G11B509
CPC分类号： G11B7/1267 , G11B7/0079 , G11B11/10595
摘要： A method and device for controlling a power of pulsed light is provided, which is emitted by a light source, condensed by a object lens and irradiated to a recording medium for recording information in the recording medium. In order to use the power more efficiently under the limitation of the maximum output of the light source and the maximum efficiency of condensing light in the optical system, the method includes steps of performing test writing with the pulsed light having a fixed bottom power and variable peak power, calculating an optimum average power in accordance with the bottom power and the peak power of the optimum condition obtained by the test writing step, and recalculating the peak power and the bottom power in accordance with the optimum average power so that the peak power is decreased and the bottom power is increased.
摘要翻译：提供了一种用于控制脉冲光功率的方法和装置，其由光源发射，由物镜聚光并照射到用于将信息记录在记录介质中的记录介质。为了在光源的最大输出的限制和光学系统中的聚光的最大效率的限制下更有效地使用电力，该方法包括以下步骤：用具有固定底部功率和可变的功率的脉冲光执行测试写入峰值功率，根据通过测试写入步骤获得的最佳条件的底部功率和峰值功率来计算最佳平均功率，并且根据最佳平均功率重新计算峰值功率和底部功率，使得峰值功率降低，底部功率增加。

6. 发明授权

US5850377A Data readout system for optical disk having maximum likehood data detecting circuit 失效
标题翻译：具有最大像素数据检测电路的光盘数据读出系统
公开(公告)号：US5850377A
公开(公告)日：1998-12-15
申请号：US838832
申请日：1997-04-11
申请人： Masakazu Taguchi , Haruhiko Izumi
发明人： Masakazu Taguchi , Haruhiko Izumi
IPC分类号： G11B7/00 , G11B7/005 , G11B11/105 , G11B20/10 , G11B20/12
CPC分类号： G11B20/10083 , G11B11/10515 , G11B20/10009 , G11B7/005 , G11B20/1258 , G11B2220/2537
摘要： A system reproduces data from an optical disk in which a signal obtained by encoding recording data in accordance with a recording rule including a rule corresponding to a partial response class I characteristic has been recorded. The system includes an optical head for reproducing a signal from the optical disk, an analog-to-digital converter for sampling the signal reproduced by the optical head at predetermined timing and for outputting sampling data, a determination unit for determining, based on the sampling data from the analog-to-digital converter, a transition state of data to be reproduced in accordance with a transmission line characteristic of the reproduction system for the optical disk, and a data decision unit for deciding maximum likelihood reproduction data at present timing based on the determination result obtained by the determination unit.
摘要翻译：系统从光盘再现数据，其中根据包括与部分响应等级I特性对应的规则的记录规则对记录数据进行编码而获得的信号被记录在其中。该系统包括用于再现来自光盘的信号的光学头，用于在预定定时对由光头再现的信号进行采样并用于输出采样数据的模数转换器，确定单元，用于基于采样来自模数转换器的数据，根据用于光盘的再现系统的传输线特性要再现的数据的转变状态，以及数据判定单元，用于基于当前定时决定最大似然再现数据由确定单元获得的确定结果。

7. 发明申请

US20120307403A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING APPARATUS 有权
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US20120307403A1
公开(公告)日：2012-12-06
申请号：US13372367
申请日：2012-02-13
申请人： Kazuto KASHIWAGI , Makoto Asakura , Haruhiko Izumi , Masatoshi Sakurai
发明人： Kazuto KASHIWAGI , Makoto Asakura , Haruhiko Izumi , Masatoshi Sakurai
IPC分类号： G11B5/127 , G11B5/74
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/59688
摘要： According to one embodiment, a magnetic recording medium includes: a data area on which a plurality of first magnetic dots are arranged at predetermined positions to record information; a servo area on which a plurality of second magnetic dots for specifying the positions of said plurality of first magnetic dots are arranged at predetermined positions; and servo frames configured so that a frequency of said servo frames is 2 N per circumference of said medium having a radius, that said servo frames are radially discontinuous, and that said servo frame and a space-area, on which no servo frames exist, are alternately radially arranged at a cycle W.
摘要翻译：根据一个实施例，一种磁记录介质包括：数据区，多个第一磁点排列在预定位置以记录信息; 伺服区域，其上用于指定所述多个第一磁性点的位置的多个第二磁性点布置在预定位置; 以及伺服框架，其被配置为使得所述伺服帧的频率为具有半径的所述介质的每圆周为2N，所述伺服框架是径向不连续的，并且所述伺服框架和不存在伺服框架的空间区域，在周期W交替地径向布置

8. 发明申请

US20100103554A1 MEDIA ACCESS METHOD AND MAGNETIC STORAGE APPARATUS 审中-公开
标题翻译：媒体访问方法和磁存储设备
公开(公告)号：US20100103554A1
公开(公告)日：2010-04-29
申请号：US12556303
申请日：2009-09-09
申请人： Haruhiko Izumi
发明人： Haruhiko Izumi
IPC分类号： G11B20/20
CPC分类号： G11B20/10009 , B82Y10/00 , G11B5/59688 , G11B5/743 , G11B2220/252
摘要： According to one embodiment, a media access method includes a head scanning each track of a magnetic recording medium while tilting with respect to a direction perpendicular to the track direction at all positions including a position with a skew angle of zero on the magnetic recording medium. The track includes at least one magnetic dot array. The core width of the head is set with respect to a pitch of magnetic dots in the track direction and a pitch in the direction perpendicular to the track direction so that the head does not simultaneously scan a plurality of magnetic dots while scanning one track.
摘要翻译：根据一个实施例，介质存取方法包括磁头扫描磁记录介质的磁道，同时相对于垂直于轨道方向的方向在包括在磁记录介质上具有零倾角的位置的所有位置倾斜。轨道包括至少一个磁点阵列。磁头的磁芯宽度相对于轨道方向上的磁点的间距和与磁道方向垂直的方向的间距设定，使得磁头在扫描一个磁道的同时不同时扫描多个磁性点。

9. 发明授权

US5986987A PRML readout system for optical disk 失效
标题翻译： PRML读取光盘系统
公开(公告)号：US5986987A
公开(公告)日：1999-11-16
申请号：US54653
申请日：1998-04-03
申请人： Masakazu Taguchi , Haruhiko Izumi
发明人： Masakazu Taguchi , Haruhiko Izumi
IPC分类号： G11B7/00 , G11B7/005 , G11B11/105 , G11B20/10 , G11B20/12
CPC分类号： G11B20/10083 , G11B11/10515 , G11B20/10009 , G11B7/005 , G11B20/1258 , G11B2220/2537
摘要： A system reproduces data from an optical disk in which a signal obtained by encoding recording data in accordance with a recording rule including a rule corresponding to a partial response class I characteristic has been recorded. The system includes an optical head for reproducing a signal from the optical disk, an analog-to-digital converter for sampling the signal reproduced by the optical head at predetermined timing and for outputting sampling data, a determination unit for determining, based on the sampling data from the analog-to-digital converter, a transition state of data to be reproduced in accordance with a transmission line characteristic of the reproduction system for the optical disk, and a data decision unit for deciding maximum likelihood reproduction data at present timing based on the determination result obtained by the determination unit.
摘要翻译：系统从光盘再现数据，其中根据包括与部分响应等级I特性对应的规则的记录规则对记录数据进行编码而获得的信号被记录在其中。该系统包括用于再现来自光盘的信号的光学头，用于在预定定时对由光头再现的信号进行采样并用于输出采样数据的模数转换器，确定单元，用于基于采样来自模数转换器的数据，根据用于光盘的再现系统的传输线特性要再现的数据的转变状态，以及数据判定单元，用于基于当前定时决定最大似然再现数据由确定单元获得的确定结果。

10. 发明授权

US5876858A Magneto-optical recording medium with magnetic film having large magnetic anisotropy 失效
标题翻译：具有磁性各向异性大的磁性膜的磁光记录媒体
公开(公告)号：US5876858A
公开(公告)日：1999-03-02
申请号：US709640
申请日：1996-09-09
申请人： Tomonori Ikeya , Tsutomu Tanaka , Haruhiko Izumi
发明人： Tomonori Ikeya , Tsutomu Tanaka , Haruhiko Izumi
IPC分类号： G11B11/10 , G11B7/257 , G11B11/105 , H01F1/00 , G11B7/24
CPC分类号： G11B7/2578 , G11B11/10591 , G11B11/10593 , G11B2007/24306 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B7/2534 , G11B7/2585 , Y10S428/928 , Y10T428/12465
摘要： A magneto-optical recording medium improved in reproduction stability and carrier-to-noise ratio by enlarging the magnetic anisotropy of a magnetic film. The magneto-optical recording medium is composed of a transparent substrate, a first dielectric film laminated on the transparent substrate, a magnetic film laminated on the first dielectric film, and a second dielectric film laminated on the magnetic film. The second dielectric film is formed from a material different from a material of the first dielectric film, and has film stress different from film stress of the first dielectric film. Accordingly, the coercive force and the magnetic anisotropy of the magnetic film can be enlarged.
摘要翻译：磁光记录介质通过扩大磁性膜的磁各向异性而提高了再现稳定性和载波噪声比。磁光记录介质由透明基板，层叠在透明基板上的第一电介质膜，层叠在第一电介质膜上的磁性膜和层叠在磁性膜上的第二电介质膜构成。第二电介质膜由与第一电介质膜的材料不同的材料形成，并且具有与第一电介质膜的膜应力不同的膜应力。因此，能够扩大磁性膜的矫顽力和磁各向异性。

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