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156 条记录 (耗时 0.026 秒)

    Information reproducing method and information reproducing device
    4.
    发明授权
    Information reproducing method and information reproducing device 失效
    信息再现方法和信息再现装置

    公开(公告)号：US06836457B2

    公开(公告)日：2004-12-28

    申请号：US10385881

    申请日：2003-03-11

    申请人： Tadashi Nakamura ,  Yasumori Hino ,  Norio Miyatake

    发明人： Tadashi Nakamura ,  Yasumori Hino ,  Norio Miyatake

    IPC分类号： G11B509

    CPC分类号： G11B20/10046 ,  G11B20/10009 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027

    摘要： An information reproducing device for reproducing digital signals with an optical head from an optical disk includes a first equalizer for waveform-equalizing a reproduction signal, an adaptive learning device for renewing the equalization properties of the first waveform equalizer with an adaptation algorithm, a memory for storing a reproduction signal, a second waveform equalizer that reads signals from the memory and performs waveform equalization after an adaptive learning operation for the first waveform equalizer has been terminated, and a demodulator for demodulating the output of the second waveform equalizer. Thus, adaptive equalization processing can be performed with constantly superior equalization properties and without sacrificing data capacity.

    摘要翻译： 一种用于从光盘用光学头再现数字信号的信息再现装置包括用于对再现信号进行波形均衡的第一均衡器，用于利用自适应算法更新第一波形均衡器的均衡特性的自适应学习装置， 存储再现信号的第二波形均衡器，在第一波形均衡器的自适应学习操作结束之后从存储器读取信号并执行波形均衡的第二波形均衡器，以及用于解调第二波形均衡器的输出的解调器。 因此，可以以不间断优异的均衡性能并且不牺牲数据容量来执行自适应均衡处理。

    Information reproducing method and information reproducing device
    5.
    发明授权
    Information reproducing method and information reproducing device 有权

    公开(公告)号：US06587407B1

    公开(公告)日：2003-07-01

    申请号：US09457813

    申请日：1999-12-09

    申请人： Tadashi Nakamura ,  Yasumori Hino ,  Norio Miyatake

    发明人： Tadashi Nakamura ,  Yasumori Hino ,  Norio Miyatake

    IPC分类号： G11B509

    CPC分类号： G11B20/10046 ,  G11B20/10009 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027

    摘要： An information reproducing device for reproducing digital signals with an optical head from an optical disk includes a first equalizer for waveform-equalizing a reproduction signal, an adaptive learning device for renewing the equalization properties of the first waveform equalizer with an adaptation algorithm, a memory for storing a reproduction signal, a second waveform equalizer that reads signals from the memory and performs waveform equalization after an adaptive learning operation for the first waveform equalizer has been terminated, and a demodulator for demodulating the output of the second waveform equalizer. Thus, adaptive equalization processing can be performed with constantly superior equalization properties and without sacrificing data capacity.

    High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master
    6.
    发明授权
    High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master 失效
    高密度光盘，再现光盘的装置及其制造方法

    公开(公告)号：US06252845B1

    公开(公告)日：2001-06-26

    申请号：US09128121

    申请日：1998-08-03

    申请人： Yasumori Hino ,  Norio Miyatake ,  Tadashi Nakamura

    发明人： Yasumori Hino ,  Norio Miyatake ,  Tadashi Nakamura

    IPC分类号： G11B724

    CPC分类号： G11B27/3027 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/261 ,  G11B27/19 ,  Y10S430/146

    摘要： An optical disk includes at least one region along a radial direction, and a plurality of tracks provided in the at least one region. The at least one region contains address regions radially positioned on the plurality of tracks. In the address regions, data which is common between two adjacent tracks of the plurality of tracks is recorded at positions aligned along the same radial direction on the two adjacent tracks, and data which is not common between the two adjacent tracks is recorded at positions along different radial directions on the two adjacent tracks.

    摘要翻译： 光盘包括沿着径向方向的至少一个区域和设置在该至少一个区域中的多个轨道。 所述至少一个区域包含位于多个轨道上的径向定位的地址区。 在地址区域中，在两个相邻轨道上沿着相同的径向方向对准的位置处记录在多个轨道的两个相邻轨道之间共同的数据，并且在两个相邻轨道之间的位置记录不相同的数据 两个相邻轨道上的不同径向方向。

    Optical head having a reproducing optical system and filter formed by light passing therethrough
    7.
    发明授权
    Optical head having a reproducing optical system and filter formed by light passing therethrough 失效
    具有再现光学系统的光头和通过光的光形成的滤光片

    公开(公告)号：US06178151B1

    公开(公告)日：2001-01-23

    申请号：US09057887

    申请日：1998-04-09

    申请人： Yasumori Hino ,  Norio Miyatake ,  Masahiro Birukawa ,  Tadashi Nakamura

    发明人： Yasumori Hino ,  Norio Miyatake ,  Masahiro Birukawa ,  Tadashi Nakamura

    IPC分类号： G11B700

    CPC分类号： G11B7/1381 ,  G11B7/22 ,  G11B11/10543

    摘要： An optical head includes: a light source; a photodetector for generating a prescribed signal based on light which the photodetector receives; a converging optical system for converging a light beam emitted from the light source to be incident upon a prescribed reflective member; and a reproducing optical system for guiding reflected light from the prescribed reflective member to the photodetector. The reproducing optical system is configured for converging light on a prescribed converging point, and a filter having a light transmissive region for allowing light in the vicinity of a center of the converged light to selectively pass therethrough is provided in the vicinity of the converging point. The light transmissive region of the filter is formed by light which has passed through at least a part of the reproducing optical system and has been converged.

    摘要翻译： 光头包括：光源; 用于根据光电检测器接收的光产生规定信号的光电检测器; 会聚光学系统，用于会聚从光源发射的光束入射到规定的反射构件上; 以及用于将来自规定反射构件的反射光引导到光电检测器的再现光学系统。 再现光学系统被配置为将光聚焦在规定的会聚点上，并且在会聚点附近设置具有用于允许会聚光中心附近的光选择性地通过的透光区域的滤光器。 滤光器的透光区域由已经通过再现光学系统的至少一部分并且已经会聚的光形成。

    Disk drive apparatus and disk storage medium for high density recording
    8.
    发明授权
    Disk drive apparatus and disk storage medium for high density recording 失效
    用于高密度记录的磁盘驱动装置和磁盘存储介质

    公开(公告)号：US5748592A

    公开(公告)日：1998-05-05

    申请号：US794816

    申请日：1997-02-04

    申请人： Yasumori Hino ,  Norio Miyatake ,  Masahiro Birukawa ,  Tadashi Nakamura

    发明人： Yasumori Hino ,  Norio Miyatake ,  Masahiro Birukawa ,  Tadashi Nakamura

    IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/14 ,  G11B20/10 ,  G11B7/00

    CPC分类号： G11B7/005 ,  G11B20/10009 ,  G11B7/0045 ,  G11B7/14

    摘要： A disk drive apparatus is provided that can reproduce data at low bit error rate even if a crosstalk is large. This apparatus comprises means for writing three or more different states of record marks in a read track and adjacent tracks thereof on a disk storage medium, means for detecting read levels of the record marks in the read track, means for calculating every possible read level regarding every possible combination of the record marks in the read track and adjacent tracks thereof according to the detected read levels, and means for performing most-liklihood decoding of written data in accordance with the possible read levels as reference levels.

    摘要翻译： 提供了一种磁盘驱动装置，即使串扰较大，也可以以低误码率再现数据。 该装置包括用于在磁盘存储介质上的读磁道和其相邻轨道中写入三个或更多个不同状态的记录标记的装置，用于检测读磁道中的记录标记的读取电平的装置，用于计算关于 根据检测到的读取电平，读取磁道和相邻轨道中的记录标记的每个可能的组合，以及用于根据可能的读取电平作为参考电平执行写入数据的最可能解码的装置。

    Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same
    9.
    发明授权
    Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same 失效
    用于畴壁位移检测系统的磁光记录介质及其制造方法

    公开(公告)号：US06975564B2

    公开(公告)日：2005-12-13

    申请号：US10699937

    申请日：2003-11-03

    申请人： Kiyoshi Uchida ,  Yasumori Hino ,  Motoyoshi Murakami ,  Norio Miyatake

    发明人： Kiyoshi Uchida ,  Yasumori Hino ,  Motoyoshi Murakami ,  Norio Miyatake

    IPC分类号： B32B3/02 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10582 ,  B32B3/02 ,  G11B11/10578 ,  G11B11/10584 ,  G11B11/10586 ,  Y10T428/31

    摘要： An optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from the substrate side. The optical disk further includes a first dielectric layer disposed between the substrate and the recording layer and a second dielectric layer disposed on the recording layer opposite to the substrate, wherein the recording layer is initialized with light having a wavelength λ incident from the second dielectric layer side, and the thickness of the second dielectric layer is in a range of λ/(12×n) to λ/(2×n) (where n is a refractive index of the second dielectric layer).

    摘要翻译： 本发明的光盘包括基板和设置在基板上方的记录层，并且使用从基板侧入射的光由DWDD系统再现信息信号。 光盘还包括设置在基板和记录层之间的第一介质层和设置在与基板相对的记录层上的第二介电层，其中记录层由具有从第二介电层入射的波长λ的光初始化 并且第二电介质层的厚度在λ/（12xn）至λ/（2xn）（其中n是第二介电层的折射率）的范围内。

    Method for reading magnetic super resolution type magneto-optical recording medium
    10.
    发明授权
    Method for reading magnetic super resolution type magneto-optical recording medium 失效
    磁性超分辨率型磁光记录介质的读取方法

    公开(公告)号：US5986977A

    公开(公告)日：1999-11-16

    申请号：US883549

    申请日：1997-06-26

    申请人： Masahiro Birukawa ,  Yasumori Hino ,  Norio Miyatake

    发明人： Masahiro Birukawa ,  Yasumori Hino ,  Norio Miyatake

    IPC分类号： G11B11/10 ,  G11B5/596 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10515 ,  G11B11/10508 ,  G11B11/10513 ,  G11B11/10523 ,  G11B11/10573 ,  G11B11/10595 ,  G11B5/59677

    摘要： A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.

    摘要翻译： 提供了一种用于磁光记录介质的读取方法，照射激光作为读取光束并使用磁头。 高密度和高透射率是可能的，并且可以通过读取磁光记录介质，同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。 在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中，聚焦的激光以 使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。 读取磁光记录介质，同时施加加速至少将记录层的磁化转录到读取层中的磁场161。