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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. 发明申请

US20120147497A1 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：US20120147497A1
公开(公告)日：2012-06-14
申请号：US13323423
申请日：2011-12-12
申请人： Haruhiko IZUMI
发明人： Haruhiko IZUMI
IPC分类号： G11B5/127 , G11B5/82
CPC分类号： G11B5/82 , B82Y10/00
摘要： According to one embodiment, a magnetic recording medium includes: a data region including a plurality of first magnetic dots disposed at specific positions for recording data; and a servo region including a plurality of second magnetic dots disposed at specific positions for identifying the position of the first magnetic dots, wherein an address pattern in the servo region is subdivided in the radial direction.
摘要翻译：根据一个实施例，磁记录介质包括：数据区，包括设置在用于记录数据的特定位置处的多个第一磁点; 以及伺服区域，其包括设置在特定位置处的多个第二磁性点，用于识别第一磁性体的位置，其中伺服区域中的地址图案被沿径向细分。

3. 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。

4. 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。

5. 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。

6. 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.

7. 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。

8. 发明授权

US5610895A Optical head having light blocking means positioned in front of a detector for super-resolution detection 失效
标题翻译：具有位于检测器前方的遮光装置的光学头用于超分辨率检测
公开(公告)号：US5610895A
公开(公告)日：1997-03-11
申请号：US604362
申请日：1996-02-21
申请人： Haruhiko Izumi , Kyoko Miyabe
发明人： Haruhiko Izumi , Kyoko Miyabe
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/135 , G11B11/105
CPC分类号： G11B7/005 , G11B11/10543 , G11B7/1381 , G11B7/0045
摘要： An optical head includes a lens system forming light reflected from an optical disk into parallel rays, a focal error and tracking error detection system detecting focal error and tracking error based on the parallel rays, an optical reproduced signal detection system detecting a reproduced signal reproduced from the optical disk based on the parallel rays, and a light blocking part for blocking, out of the parallel rays, at least a central portion in a light amplitude distribution of parallel rays supplied to the optical reproduced signal detection system.
摘要翻译：光学头包括将从光盘反射的光转换为平行光的透镜系统，基于平行光检测焦点误差和跟踪误差的焦点误差和跟踪误差检测系统，检测从基于平行光线的光盘，以及用于阻挡平行射线中至少一个供给光学再现信号检测系统的平行光的光振幅分布中的中心部分的遮光部分。

9. 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。

10. 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。

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