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1. 发明授权

US06560168B1 Information recording/reproducing device 失效
标题翻译：信息记录/再现装置
公开(公告)号：US06560168B1
公开(公告)日：2003-05-06
申请号：US09719427
申请日：2000-12-12
申请人： Hideki Saga , Hiroaki Nemoto , Hirofumi Sukeda , Masahiko Takahashi , Kimio Nakamura , Yohji Maruyama , Hiroshi Ide , Takehiko Hamaguchi
发明人： Hideki Saga , Hiroaki Nemoto , Hirofumi Sukeda , Masahiko Takahashi , Kimio Nakamura , Yohji Maruyama , Hiroshi Ide , Takehiko Hamaguchi
IPC分类号： G11B1100
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00 , G11B5/398 , G11B5/5552 , G11B5/59683 , G11B5/74 , G11B5/82 , G11B11/1053 , G11B11/10532 , G11B11/10541 , G11B11/10554 , G11B11/10576 , G11B11/1058 , G11B2005/0002 , G11B2005/0005 , G11B2005/0016 , G11B2005/0021 , G11B2005/3996
摘要： An information recording apparatus using a recording medium which holds information by reversed magnetic domains on a perpendicular magnetic recording film includes an irradiation unit for applying electromagnetic energy or light onto the recording medium, and a magnetic flux detection unit for detecting magnetic leakage flux emerging from the recording medium, the magnetic flux detection unit being disposed on the same side as the irradiation unit with respect to the recording medium. As a result, both side recording of the recording medium can be conducted.
摘要翻译：使用记录介质的信息记录装置，其用垂直磁记录膜上的反向磁畴保持信息，包括用于向记录介质施加电磁能或光的照射单元，以及磁通检测单元，用于检测从记录介质，磁通检测单元相对于记录介质设置在与照射单元相同的一侧。结果，可以进行记录介质的双面记录。

2. 发明授权

US06683823B2 Method for reproducing information on a recording medium 失效
标题翻译：用于在记录介质上再现信息的方法
公开(公告)号：US06683823B2
公开(公告)日：2004-01-27
申请号：US10320517
申请日：2002-12-17
申请人： Hideki Saga , Hiroaki Nemoto , Hirofumi Sukeda , Masahiko Takahashi , Kimio Nakamura , Yohji Maruyama , Hiroshi Ide , Takehiko Hamaguchi
发明人： Hideki Saga , Hiroaki Nemoto , Hirofumi Sukeda , Masahiko Takahashi , Kimio Nakamura , Yohji Maruyama , Hiroshi Ide , Takehiko Hamaguchi
IPC分类号： G11B700
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/09 , G11B2005/0002 , G11B2005/0021 , G11B2005/0029 , G11B2005/3996
摘要： A method for reproducing information on a recording medium includes irradiating electromagnetic energy or light to the recording medium from one side with respect to the recording medium, applying a recording magnetic field to an electromagnetic energy or light irradiated position on the recording medium from the one side of irradiating electromagnetic energy or light, and detecting magnetic leakage flux emerging from the recording medium from the one side of irradiating electromagnetic energy or light.
摘要翻译：一种用于在记录介质上再现信息的方法包括：从相对于记录介质的一侧向记录介质照射电磁能或光，从记录介质的一侧向记录介质上的电磁能量或光照射位置施加记录磁场照射电磁能或光，并从照射电磁能或光的一侧检测从记录介质出射的漏磁通。

3. 发明授权

US08059497B2 Megneto-optical recording device capable of changing the shapes of heating areas 失效
标题翻译：能够改变加热区域形状的光学记录装置
公开(公告)号：US08059497B2
公开(公告)日：2011-11-15
申请号：US12710738
申请日：2010-02-23
申请人： Hiroaki Nemoto , Hideki Saga , Hirofumi Sukeda
发明人： Hiroaki Nemoto , Hideki Saga , Hirofumi Sukeda
IPC分类号： G11B11/00
CPC分类号： G11B11/10578 , G11B5/314 , G11B11/10502 , G11B11/10528 , G11B11/10576 , G11B2005/0005 , G11B2005/0021
摘要： In an information recording/reproducing method performing a thermo-magnetic recording, a tracking offset value of a recording light spot and/or a tracking offset value of a magnetic flux detecting element is changed in accordance with a radial position at which a tracking is performed at the present time, to make a direction of a magnetic wall of a recording magnetic domain in accord with a longitudinal direction of the magnetic flux detecting element. Alternatively, a shape of a heated area is changed to be in accord with the direction of the magnetic flux detecting means at respective radial position, to make the direction of the magnetic wall of the recording magnetic domain in accord with the longitudinal direction of the magnetic flux detecting element.
摘要翻译：在执行热磁记录的信息记录/再现方法中，根据执行跟踪的径向位置改变记录光点的跟踪偏移值和/或磁通量检测元件的跟踪偏移值目前为了根据磁通量检测元件的纵向方向制造记录磁畴的磁壁的方向。或者，加热区域的形状根据磁通检测单元的径向位置的方向变化，使得记录磁畴的磁壁的方向与磁性体的长度方向一致通量检测元件。

4. 发明授权

US07688685B1 Magneto-optical recording device capable of changing the shapes of heating areas 失效
标题翻译：能够改变加热区域形状的磁光记录装置
公开(公告)号：US07688685B1
公开(公告)日：2010-03-30
申请号：US10069732
申请日：2000-03-01
申请人： Hiroaki Nemoto , Hideki Saga , Hirofumi Sukeda
发明人： Hiroaki Nemoto , Hideki Saga , Hirofumi Sukeda
IPC分类号： G11B11/00
CPC分类号： G11B11/10578 , G11B5/314 , G11B11/10502 , G11B11/10528 , G11B11/10576 , G11B2005/0005 , G11B2005/0021
摘要： In an information recording/reproducing method performing a thermo-magnetic recording, a tracking offset value of a recording light spot and/or a tracking offset value of a magnetic flux detecting element is changed in accordance with a radial position at which a tracking is performed at the present time, to make a direction of a magnetic wall of a recording magnetic domain in accord with a longitudinal direction of the magnetic flux detecting element. Alternatively, a shape of a heated area is changed to be in accord with the direction of the magnetic flux detecting means at respective radial position, to make the direction of the magnetic wall of the recording magnetic domain in accord with the longitudinal direction of the magnetic flux detecting element.
摘要翻译：在执行热磁记录的信息记录/再现方法中，根据执行跟踪的径向位置改变记录光点的跟踪偏移值和/或磁通量检测元件的跟踪偏移值目前为了根据磁通量检测元件的纵向方向制造记录磁畴的磁壁的方向。或者，加热区域的形状根据磁通检测单元的径向位置的方向变化，使得记录磁畴的磁壁的方向与磁性体的长度方向一致通量检测元件。

5. 发明申请

US20100188769A1 METHOD AND DEVICE FOR INFORMATION RECORDING/REPRODUCING AND INFORMATION RECORDING MEDIUM 失效
标题翻译：用于信息记录/再现和信息记录介质的方法和装置
公开(公告)号：US20100188769A1
公开(公告)日：2010-07-29
申请号：US12710738
申请日：2010-02-23
申请人： Hiroaki Nemoto , Hideki Saga , Hirofumi Sukeda
发明人： Hiroaki Nemoto , Hideki Saga , Hirofumi Sukeda
IPC分类号： G11B5/02
CPC分类号： G11B11/10578 , G11B5/314 , G11B11/10502 , G11B11/10528 , G11B11/10576 , G11B2005/0005 , G11B2005/0021
摘要： In an information recording/reproducing method performing a thermo-magnetic recording, a tracking offset value of a recording light spot and/or a tracking offset value of a magnetic flux detecting element is changed in accordance with a radial position at which a tracking is performed at the present time, to make a direction of a magnetic wall of a recording magnetic domain in accord with a longitudinal direction of the magnetic flux detecting element. Alternatively, a shape of a heated area is changed to be in accord with the direction of the magnetic flux detecting means at respective radial position, to make the direction of the magnetic wall of the recording magnetic domain in accord with the longitudinal direction of the magnetic flux detecting element.
摘要翻译：在执行热磁记录的信息记录/再现方法中，根据执行跟踪的径向位置改变记录光点的跟踪偏移值和/或磁通量检测元件的跟踪偏移值目前为了根据磁通量检测元件的纵向方向制造记录磁畴的磁壁的方向。或者，加热区域的形状根据磁通检测单元的径向位置的方向变化，使得记录磁畴的磁壁的方向与磁性体的长度方向一致通量检测元件。

6. 发明授权

US06512726B2 Information recording apparatus 有权
公开(公告)号：US06512726B2
公开(公告)日：2003-01-28
申请号：US10020210
申请日：2001-12-18
申请人： Hideki Saga , Hirofumi Sukeda , Takehiko Yorozu
发明人： Hideki Saga , Hirofumi Sukeda , Takehiko Yorozu
IPC分类号： G11B700
CPC分类号： G11B7/00456 , G11B7/0045 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/126 , G11B11/1053 , G11B11/10595
摘要： An information recording apparatus for recording data by applying energy to a recording medium to form thereon local physical changes of the medium includes a space length discriminating unit for discriminating a space length of a space in a channel data sequence when data is recorded, and a recording energy irradiating unit for generating at least two recording waveforms when successive spaces having a same length in the channel data sequence are recorded, in accordance with results discriminated by the space length discriminating unit. The at least two recording waveforms may be at least two mutually different recording waveforms.

7. 发明授权

US06529466B2 Information recording apparatus 有权
公开(公告)号：US06529466B2
公开(公告)日：2003-03-04
申请号：US10020211
申请日：2001-12-18
申请人： Hideki Saga , Hirofumi Sukeda , Takehiko Yorozu
发明人： Hideki Saga , Hirofumi Sukeda , Takehiko Yorozu
IPC分类号： G11B700
CPC分类号： G11B7/00456 , G11B7/0045 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/126 , G11B11/1053 , G11B11/10595
摘要： An information recording apparatus for recording data by applying energy to a recording medium to form thereon local physical changes of the medium includes a total energy irradiating amount discriminating unit for discriminating a total energy irradiating amount of each mark and each space when data is recorded, and a recording energy irradiating unit for switching between at least two levels of the total energy irradiating amount during a mark non-forming period, in accordance with results discriminated by the total energy irradiating amount discriminating unit. The at least two levels may be at least two mutually different levels.

8. 发明授权

US06404716B1 Information recording apparatus 有权
公开(公告)号：US06404716B1
公开(公告)日：2002-06-11
申请号：US09712985
申请日：2000-11-16
申请人： Hideki Saga , Hirofumi Sukeda , Takehiko Yorozu
发明人： Hideki Saga , Hirofumi Sukeda , Takehiko Yorozu
IPC分类号： G11B700
CPC分类号： G11B7/00456 , G11B7/0045 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/126 , G11B11/1053 , G11B11/10595
摘要： An information recording apparatus capable of forming a fine mark reliably and highly precisely through compensation for thermal interference and heat accumulation. The information recording apparatus is provided with a recording energy irradiating unit for generating at least two recording waveforms when marks of the same length or spaces of the same length in a channel data sequence are recorded. The information recording apparatus constructed as above can realize highly reliable recording/reproducing operations and can be made compact at a low cost with a large storage capacity.

9. 发明授权

US06256277B1 Information recording apparatus having controlled recording energy generation circuit 有权
标题翻译：具有受控记录能量生成电路的信息记录装置
公开(公告)号：US06256277B1
公开(公告)日：2001-07-03
申请号：US09206985
申请日：1998-12-08
申请人： Hideki Saga , Hirofumi Sukeda
发明人： Hideki Saga , Hirofumi Sukeda
IPC分类号： G11B576
CPC分类号： G11B7/126 , G11B7/00454 , G11B11/10506 , G11B11/1053 , G11B11/10595 , G11B20/10
摘要： An information recording apparatus for injecting an energy beam into a recording medium to form locally a region different in physical properties from a non-recording region to thereby record information, has a drive for driving an energy generation source for changing the number of injected energy pulses in a mark forming period in accordance with the mark length so that the interval between arbitrary two points of the change of injected power level at the time of information recording is substantially set to be longer than a half of a detection window width in order to make it easy to drive a recording energy generation source to thereby form said mark accurately and speedily and, at the same time, in order to secure a sufficient time required for cooling the recording medium.
摘要翻译：一种信息记录装置，用于将能量束注入到记录介质中以在局部形成与非记录区域不同的物理区域，从而记录信息，具有驱动用于改变喷射能量脉冲数的能量产生源的驱动装置在标记形成期间，根据标记长度，使信息记录时的注入功率电平变化的任意两点之间的间隔大致设定为长于检测窗宽度的一半，以便使可以容易地驱动记录能量产生源，从而准确且快速地形成所述标记，同时，为了确保冷却记录介质所需的足够的时间。

10. 发明授权

US06545954B2 Optical disk device using a recording medium structurally arranged to generate a recording clock 失效
公开(公告)号：US06545954B2
公开(公告)日：2003-04-08
申请号：US10080549
申请日：2002-02-25
申请人： Hirofumi Sukeda , Hideki Saga
发明人： Hirofumi Sukeda , Hideki Saga
IPC分类号： G11B1100
CPC分类号： G11B7/1267 , G11B11/1051 , G11B11/10521 , G11B11/1053 , G11B11/10595 , G11B27/36 , G11B2220/2525
摘要： A high-speed large capacity file system is built in which the track density is improved by applying a highly precise magnetic domain width control technique to a light pulse-irradiated magnetic field modulation magnetooptical disk device which can be overwritten and is suitable for the improvement of the bit density. For the purpose, bipolar magnetic domains having edges of positive and negative polarities with respect to the direction of movement of a light spot are formed and the recording condition is optimized. Normal recording is carried out on the basis of the result of the optimization of the recording condition.

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