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1. 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

2. 发明授权

US08842392B2 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：US08842392B2
公开(公告)日：2014-09-23
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： G11B5/82
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 2N 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是交替地以循环W.

3. 发明授权

US08643970B2 Magnetic recording apparatus and recording method of magnetic recording apparatus 失效
标题翻译：磁记录装置和磁记录装置的记录方法
公开(公告)号：US08643970B2
公开(公告)日：2014-02-04
申请号：US13357444
申请日：2012-01-24
申请人： Naoki Tagami , Kazuto Kashiwagi , Akihiro Itakura , Haruhiko Izumi , Masatoshi Sakurai
发明人： Naoki Tagami , Kazuto Kashiwagi , Akihiro Itakura , Haruhiko Izumi , Masatoshi Sakurai
IPC分类号： G11B5/02
CPC分类号： G11B20/10388 , B82Y10/00 , G11B5/012 , G11B5/09 , G11B20/10398 , G11B2220/2516 , G11B2220/252
摘要： According to one embodiment, a magnetic recording apparatus configured to record information onto a magnetic recording medium by a shingled write recording method, the magnetic recording apparatus includes: a recording head configured to cover a plurality of dot arrays and an end portion of which is situated at one dot array of a recording target; an actuator configured to move the recording head by one array after the recording to one dot array by the recording head; and a controller configured to perform recording compensation of the magnetic dot based on prestored recording data of a peripheral dot of a magnetic dot when input user data is recorded to the magnetic dot.
摘要翻译：根据一个实施例，一种磁记录装置，被配置为通过带状写入记录方法将信息记录到磁记录介质上，该磁记录装置包括：记录头，被配置为覆盖多个点阵列，并且其端部位于在记录目标的一个点阵列处; 致动器，被配置为通过记录头将记录头在记录之后移动一个阵列到一个点阵列; 以及控制器，被配置为当输入的用户数据被记录到磁点时，基于磁点的外围点的预先存储的记录数据来执行磁点的记录补偿。

4. 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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 发明授权

US5871855A Magneto-optical recording medium and method of using same 失效
公开(公告)号：US5871855A
公开(公告)日：1999-02-16
申请号：US381474
申请日：1995-01-31
申请人： Haruhiko Izumi , Masakazu Taguchi , Tomonori Ikeya , Tsutomu Tanaka , Toshio Sugimoto , Ken Tamanoi
发明人： Haruhiko Izumi , Masakazu Taguchi , Tomonori Ikeya , Tsutomu Tanaka , Toshio Sugimoto , Ken Tamanoi
IPC分类号： G11B11/10 , G11B11/105 , G11B19/26 , G11B19/28 , G11B5/60
CPC分类号： G11B11/10597 , G11B11/10506 , G11B11/10515 , G11B11/10584 , G11B11/10586 , G11B19/26 , G11B19/28 , Y10S428/90
摘要： A magneto-optical recording medium which is adapted to realize a partial ROM with remarkable facility in providing software. The magneto-optical recording medium comprises a transparent substrate, a volatile magnetic recording layer formed on the transparent substrate and having a Curie temperature approximately equal to or lower than a temperature raisable in a recording/reproducing apparatus of a user, and a nonvolatile magnetic recording layer formed on the volatile magnetic recording layer and having a Curie temperature higher than the temperature raisable in the recording/reproducing apparatus of the user; wherein the nonvolatile magnetic recording layer is not initialized and is retained in a state immediately after manufacture of the medium.

10. 发明授权

US5745464A Edge position data reproduction apparatus 失效
标题翻译：边缘位置数据再现装置
公开(公告)号：US5745464A
公开(公告)日：1998-04-28
申请号：US826286
申请日：1997-03-27
申请人： Masakazu Taguchi , Haruhiko Izumi
发明人： Masakazu Taguchi , Haruhiko Izumi
IPC分类号： G11B20/14 , G11B7/00 , G11B7/005 , G11B11/105 , G11B20/10 , G11B20/18
CPC分类号： G11B20/10009 , G11B11/10515 , G11B7/005
摘要： A data reproduction apparatus for reproducing data corresponding to front and rear edges of marks is recorded in an optical disk. The apparatus includes an optical head for obtaining a reproduction waveform from the optical disk, an A/D converter for obtaining a real sampling value from the reproduction waveform so as to detect an ascending edge (or a descending edge), an interpolator for obtaining a descending edge (or ascending edge) calculate sampling value through interpolation using the real sampling value, and a maximum likelihood detector for detecting a maximum likelihood signal on the basis of a real sampling value and the interpolated sampling value.
摘要翻译：用于再现与标记的前边缘和后边缘对应的数据的数据再现装置被记录在光盘中。该装置包括用于从光盘获得再现波形的光学头，用于从再现波形获得实际采样值以检测上升沿（或下降沿）的A / D转换器，用于获得下降沿（或上升沿）通过使用实际采样值的内插计算采样值，以及最大似然检测器，用于基于实际采样值和内插采样值来检测最大似然信号。

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