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1. 发明授权

US5491683A Optical information recording/reproducing method 失效
标题翻译：光信息记录/再现方法
公开(公告)号：US5491683A
公开(公告)日：1996-02-13
申请号：US360327
申请日：1994-12-21
申请人： Takeshi Maeda , Hisataka Sugiyama , Hirofumi Sukeda , Kouichirou Wakabayashi
发明人： Takeshi Maeda , Hisataka Sugiyama , Hirofumi Sukeda , Kouichirou Wakabayashi
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/135 , G11B11/105
CPC分类号： B82Y10/00 , G11B11/10504 , G11B11/10528 , G11B7/0045 , G11B7/1381 , G11B2007/0013
摘要： An optical information recording/reproducing method includes that information is recorded on a rotary disk in an optically discriminative form, a light emitted from a light source is focused on the surface of the disk to form a light spot, the information is scanned with the light spot relative thereto in a rotating direction of the disk, and a reflection light or transmitting light from the disk is collected by an optical system to record or reproduce the information. An optically discriminative first information mark having a frequency higher than a spatial frequency resolvable by the optical system is recorded on the surface of the disk, an optically discriminative second information mark having a spatial frequency component higher than that resolvable by the optical system is overwrite-recorded on the first information mark, and a frequency component which is prepared from the first and second information marks and which is higher than the spatial frequency resolvable by the optical system is converted into a spatial frequency component detectable by the optical system.
摘要翻译：光信息记录/再现方法包括以光学上的区别形式将信息记录在转盘上，从光源发出的光聚焦在光盘表面上以形成光点，该信息用光在盘的旋转方向上相对于其定位，并且通过光学系统收集来自盘的反射光或透射光以记录或再现信息。具有高于由光学系统可分辨的空间频率的频率的光学鉴别第一信息标记被记录在盘的表面上，具有高于由光学系统可解析的空间频率分量的光学辨别性第二信息标记被覆盖 - 记录在第一信息标记上，并且从第一和第二信息标记准备并且高于由光学系统可解析的空间频率的频率分量被转换成由光学系统可检测的空间频率分量。

2. 发明授权

US07079457B2 Method of reproducing information with equalization coefficient for the reproduced information 有权
公开(公告)号：US07079457B2
公开(公告)日：2006-07-18
申请号：US10715378
申请日：2003-11-19
申请人： Kouichirou Wakabayashi , Hirofumi Sukeda
发明人： Kouichirou Wakabayashi , Hirofumi Sukeda
IPC分类号： G11B7/05
CPC分类号： G11B20/10009
摘要： A method of reproducing information by scanning information marks, disposed with a predetermined mark pitch therebetween and recorded on tracks inside a predetermined information recording region, by an optical spot. The method includes detecting the size of the optical change resulting from the information mark, calculating a plurality of equalization coefficients used for an equalization processing for the size of the optical change detected for each of the information marks, and reducing the inter-symbol interference on the basis of the equalization coefficients by the equalization processing. The equalization coefficient used for the equalization processing of the size of the optical change by a first information mark is greater than said equalization coefficient used for the equalization processing of the size of said optical change by a second information mark which is longer than the first information mark.

3. 发明授权

US06480447B1 Method of reproducing information using a selected equalization coefficient for each signal 有权
标题翻译：使用所选择的每个信号的均衡系数再现信息的方法
公开(公告)号：US06480447B1
公开(公告)日：2002-11-12
申请号：US09478343
申请日：2000-01-06
申请人： Kouichirou Wakabayashi , Hirofumi Sukeda
发明人： Kouichirou Wakabayashi , Hirofumi Sukeda
IPC分类号： G11B7005
CPC分类号： G11B20/10009
摘要： An information reproducing apparatus method includes the steps of radiating an optical spots to scan information marks recorded on tracks inside a predetermined information recording region, detecting an optical change of the information marks by this scanning operation, executing a signal processing for the reproducing signal so as to reduce inter-symbol interference of an interference amount that varies for each of the information marks, and reproducing the information corresponding to the information mark. The magnitude of the optical change due to the information mark is thereby detected, and a plurality of equalization coefficients used for an equalization processing are calculated for the magnitude of the optical change detected for each information mark. The inter-symbol interference is reduced on the basis of these equalization coefficients. In consequence, the inter-symbol interference can be reduced while the equalization coefficients are changed in accordance with the level of the reproducing signal.
摘要翻译：一种信息再现装置的方法包括以下步骤：发射光点以扫描记录在预定信息记录区域内的轨道上的信息标记，通过该扫描操作检测信息标记的光学变化，执行再现信号的信号处理，以便以减少对于每个信息标记而变化的干扰量的符号间干扰，并且再现与信息标记相对应的信息。由此检测出由于信息标记引起的光学变化的大小，并且针对每个信息标记检测到的光学变化的幅度来计算用于均衡处理的多个均衡系数。基于这些均衡系数减小符号间干扰。结果，可以根据再现信号的电平改变均衡系数，从而减小符号间干扰。

4. 发明授权

US07046595B2 Method of reproducing information with equalization coefficient for the reproduced information 有权
公开(公告)号：US07046595B2
公开(公告)日：2006-05-16
申请号：US10715387
申请日：2003-11-19
申请人： Kouichirou Wakabayashi , Hirofumi Sukeda
发明人： Kouichirou Wakabayashi , Hirofumi Sukeda
IPC分类号： G11B7/05
CPC分类号： G11B20/10009
摘要： A method of reproducing information by scanning information marks, disposed with a predetermined mark pitch therebetween and recorded on tracks inside a predetermined information recording region, by an optical spot. The method includes detecting the size of the optical change resulting from the information mark, calculating a plurality of equalization coefficients used for an equalization processing for the size of the optical change detected for each of the information marks, and reducing the inter-symbol interference on the basis of the equalization coefficients by the equalization processing. The equalization coefficient used for the equalization processing of the size of the optical change by a first information mark is greater than said equalization coefficient used for the equalization processing of the size of said optical change by a second information mark which is longer than the first information mark.

5. 发明授权

US06944105B2 Method of reproducing information with equalization for the reproduced information to reduce inter-symbol interference 有权
标题翻译：再现信息的再现信息的均衡方法，以减少符号间的干扰
公开(公告)号：US06944105B2
公开(公告)日：2005-09-13
申请号：US10283143
申请日：2002-10-30
申请人： Kouichirou Wakabayashi , Hirofumi Sukeda
发明人： Kouichirou Wakabayashi , Hirofumi Sukeda
IPC分类号： G11B7/135 , G11B7/00 , G11B7/005 , G11B20/10
CPC分类号： G11B20/10009
摘要： A method of reproducing information by scanning information marks, disposed with a predetermined mark pitch therebetween and recorded on tracks inside a predetermined information recording region, by an optical spot. The method includes detecting the size of the optical change resulting from the information mark, calculating a plurality of equalization coefficients used for an equalization processing for the size of the optical change detected for each of the information marks, and reducing the inter-symbol interference on the basis of the equalization coefficients by the equalization processing. The equalization coefficient used for the equalization processing of the size of the optical change by a first information mark is greater than said equalization coefficient used for the equalization processing of the size of said optical change by a second information mark which is longer than the first information mark.
摘要翻译：通过扫描以预定的标记间距设置并通过光点记录在预定信息记录区域内的轨道上的信息标记来再现信息的方法。该方法包括检测由信息标记产生的光学变化的大小，计算用于针对每个信息标记检测的光学变化的尺寸的均衡处理的多个均衡系数，并减少符号间干扰通过均衡处理的均衡系数的基础。用于通过第一信息标记对光学变化的尺寸的均衡处理的均衡系数大于用于通过比第一信息长的第二信息标记对所述光学变化的尺寸进行均衡处理的所述均衡系数标记。

6. 发明授权

US06552977B2 Information reproducing apparatus enabling equalization processing with equalization coefficient for reproduced information 有权
标题翻译：信息再现装置，能够进行用于再现信息的均衡系数的均衡处理
公开(公告)号：US06552977B2
公开(公告)日：2003-04-22
申请号：US10074049
申请日：2002-02-14
申请人： Kouichirou Wakabayashi , Hirofumi Sukeda
发明人： Kouichirou Wakabayashi , Hirofumi Sukeda
IPC分类号： G11B7005
CPC分类号： G11B20/10009
摘要： An information reproducing apparatus for reproducing information of information marks by scanning information marks recorded on tracks inside a predetermined information recording region by an optical spot, the apparatus includes a driving device, an optical head, a head driving device, a laser driving device, an automatic gain control circuit, a non-linear equalization circuit, a phase locked loop circuit, a data demodulation circuit, and a control circuit.
摘要翻译：一种信息再现装置，用于通过扫描通过光点记录在预定信息记录区域内的轨道上的信息标记来再现信息标记的信息，该装置包括驱动装置，光学头，头驱动装置，激光驱动装置，自动增益控制电路，非线性均衡电路，锁相环电路，数据解调电路和控制电路。

7. 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。

8. 发明授权

US07072279B2 Optical reproducing method for optical medium with aligned prepit portion 失效
标题翻译：具有对准预凹坑部分的光学介质的光学再现方法
公开(公告)号：US07072279B2
公开(公告)日：2006-07-04
申请号：US11178435
申请日：2005-07-12
申请人： Harukazu Miyamoto , Hirofumi Sukeda , Motoyasu Terao , Hiroyuki Minemura , Tetsuo Andou
发明人： Harukazu Miyamoto , Hirofumi Sukeda , Motoyasu Terao , Hiroyuki Minemura , Tetsuo Andou
IPC分类号： G11B7/24
CPC分类号： G11B7/24085 , G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/0938 , G11B7/094 , G11B7/26 , G11B11/10578 , G11B27/19 , G11B27/24 , G11B27/3027 , G11B2220/20 , G11B2220/2525
摘要： A recording apparatus for recording information to an optical recording medium having grooves and lands alternately provided in a radial direction, information recording areas being formed in both of the grooves and the lands, and at least one prepit region where no grooves is formed. In the prepit region, first and second information marks are disposed on a virtual extension of respectively a first boundary between one groove and one adjacent land a second boundary between the one groove and an other adjacent land, the first and second information marks being disposed so as not to exist at opposing positions on both of the first and second boundaries of the one groove. The apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, and a controller for controlling an irradiation position of an optical spot from the irradiation source.
摘要翻译：一种记录装置，用于将信息记录到具有沿径向方向交替设置的沟槽和平台的光学记录介质上，形成在两个凹槽和平台中的信息记录区域以及至少一个未形成凹槽的预凹坑区域。在预制区域中，第一信息标记和第二信息标记分别设置在一个沟槽和一个相邻焊盘之间的第一边界的虚拟延伸部分上，在一个沟槽和另一个相邻焊盘之间的第二边界，第一和第二信息标记被布置为因为不存在于一个沟槽的第一和第二边界的相对位置上。该装置包括用于照射光记录介质上的光斑的照射源和用于控制来自照射源的光点的照射位置的控制器。

9. 发明申请

US20060056276A1 Optical head and apparatus for optical disk 失效
标题翻译：光头及光盘装置
公开(公告)号：US20060056276A1
公开(公告)日：2006-03-16
申请号：US11270613
申请日：2005-11-10
申请人： Takeshi Shimano , Takeshi Maeda , Hirofumi Sukeda
发明人： Takeshi Shimano , Takeshi Maeda , Hirofumi Sukeda
IPC分类号： G11B7/135 , G11B7/00
CPC分类号： G11B7/13927 , G11B7/08576 , G11B7/09 , G11B7/123 , G11B7/131 , G11B7/1353 , G11B7/1365 , G11B7/1369 , G11B7/1381 , G11B2007/13727
摘要： In the past there has been a problem that on a detection surface the influence of interference causes a defocusing signal to degrade, narrowing the range in which spherical aberration can be stably detected. Accordingly, a diffraction grating is used to focus the inner and outer sides of luminous flux on separate optical detectors before the optical flux is focused on an optical detector and defocusing signals are independently calculated to find the difference therebetween, thereby providing a spherical aberration signal. This makes it possible to detect spherical aberation signals more stably.
摘要翻译：过去存在这样的问题：在检测面上，干扰的影响会导致散焦信号劣化，能够使可以稳定地检测球面像差的范围变窄。因此，衍射光栅用于在光通量聚焦在光学检测器之前将光通量的内侧和外侧聚焦在单独的光学检测器上，并且独立地计算散焦信号以找到它们之间的差异，从而提供球面像差信号。这使得可以更稳定地检测球面像差信号。

10. 发明授权

US06996054B2 Optical reproducing method for optical medium with aligned prepit portion 失效
标题翻译：具有对准预凹坑部分的光学介质的光学再现方法
公开(公告)号：US06996054B2
公开(公告)日：2006-02-07
申请号：US10885072
申请日：2004-07-07
申请人： Harukazu Miyamoto , Hirofumi Sukeda , Motoyasu Terao , Hiroyuki Minemura , Tetsuo Andou
发明人： Harukazu Miyamoto , Hirofumi Sukeda , Motoyasu Terao , Hiroyuki Minemura , Tetsuo Andou
IPC分类号： G11B7/00
CPC分类号： G11B7/24085 , G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/0938 , G11B7/094 , G11B7/26 , G11B11/10578 , G11B27/19 , G11B27/24 , G11B27/3027 , G11B2220/20 , G11B2220/2525
摘要： An optical reproducing method using an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction which includes a first and a second prepit portion divided in a track direction. The respective first and second prepit portion are arranged on a boundary of respective tracks and include a synchronous information prepit arranged at every two-track pitch in the radial direction and positioned at opposite boundaries of the same track. A trailing end of the first prepit portion is aligned with the radial direction in arrangement. the method includes irradiating an optical spot on the optical recording medium, detecting a reflected beam from the optical recording medium, and reproducing information on the optical recording medium by using a signal obtained in accordance with the reflected beam.
摘要翻译：一种使用光学记录介质的光学再现方法，所述光学记录介质具有跨越在径向上的多个轨道上的对准的预凹坑部分，该光学记录介质包括沿轨道方向分割的第一和第二预凹坑部分。相应的第一和第二预凹坑部分布置在各个轨道的边界上，并且包括以径向方向上的每两个轨道间距布置并且位于相同轨道的相对边界处的同步信息预制凹坑。第一预凹坑部分的后端与排列的径向对准。该方法包括在光学记录介质上照射光点，检测来自光学记录介质的反射光束，以及通过使用根据反射光束获得的信号在光学记录介质上再现信息。

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