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1. 发明授权

US5293367A Optical pickup head wherein an error signal is produced by detecting a phase difference in diffraction beams from a holographic optical element 失效
$Optical pickup head wherein an error signal is produced by detecting a phase difference in diffraction beams from a holographic optical element$
标题翻译：光拾取头，其中通过检测来自全息光学元件的衍射光束的相位差产生误差信号
公开(公告)号：US5293367A
公开(公告)日：1994-03-08
申请号：US669548
申请日：1991-03-14
申请人： Shinichi Kadowaki , Yoshiaki Komma , Naoyasu Miyagawa
发明人： Shinichi Kadowaki , Yoshiaki Komma , Naoyasu Miyagawa
IPC分类号： G11B7/09 , G11B7/12 , G11B7/125 , G11B7/13 , G11B7/135
CPC分类号： G11B7/127 , G11B7/123 , G11B7/131 , G11B7/1353
摘要： A light source emits a light beam which is focused on an optical recording medium. The light beam is reflected and diffracted by the optical recording medium. A holographic optical element has divided regions formed with different holographic patterns. The divided regions of the holographic optical element diffract the light beam reflected and diffracted by the optical recording medium, and thereby generate diffraction light beams respectively. The divided regions of the holographic optical element lie in quadrants of an imaginary X-Y coordinate system respectively. An X axis of the coordinate system extends in a direction corresponding to a direction of a pit sequence on the optical recording medium, that is, a tangential direction of the optical recording medium. A Y axis of the coordinate system extends in a direction corresponding to a direction perpendicular to the direction of the pit sequence, that is, a radial direction of the optical recording medium. Photodetectors receive the diffraction light beams generated by the divided regions of the holographic optical element, and convert the received diffraction light beams into corresponding electric signals. Phases of the electric signals are compared, and a tracking error signal is generated on the basis of a result of the phase comparison.
摘要翻译：光源发射聚焦在光学记录介质上的光束。光束被光记录介质反射和衍射。全息光学元件具有由不同全息图形成的分割区域。全息光学元件的分割区域衍射由光记录介质反射和衍射的光束，从而分别产生衍射光束。全息光学元件的分割区域分别位于虚拟X-Y坐标系的象限中。坐标系的X轴在与光记录介质上的凹坑序列的方向对应的方向上延伸，即光记录介质的切线方向。坐标系的Y轴在与垂直于凹坑序列方向（即光记录介质的径向）的方向相对应的方向上延伸。光检测器接收由全息光学元件的分割区域产生的衍射光束，并将接收的衍射光束转换成相应的电信号。比较电信号的相位，并且基于相位比较的结果生成跟踪误差信号。

2. 发明授权

US08233362B2 Information recording medium, method for recording information on information recording medium, method for reproducing information from information recording medium and method for producing information recording medium 有权
标题翻译：信息记录介质，用于在信息记录介质上记录信息的方法，从信息记录介质再现信息的方法和用于产生信息记录介质的方法
公开(公告)号：US08233362B2
公开(公告)日：2012-07-31
申请号：US12719912
申请日：2010-03-09
申请人： Kiyotaka Ito , Mamoru Shoji , Yasumori Hino , Atsushi Nakamura , Naoyasu Miyagawa , Motoshi Ito
发明人： Kiyotaka Ito , Mamoru Shoji , Yasumori Hino , Atsushi Nakamura , Naoyasu Miyagawa , Motoshi Ito
IPC分类号： G11B7/00
CPC分类号： G11B7/00736 , G11B7/00456
摘要： The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value. The size of the offset value is at least a half as large as that of the reference value.
摘要翻译：本发明提供一种用于获得存储在预定大小的空间内的读/写控制信息的措施，即使读/写控制信息的大小显着增加，也可以确保与较低级别或较老版本的媒体兼容的格式随着信息存储媒体的存储密度在不久的将来上升。在信息存储介质上，作为标记和空格的组合可写入数据序列。介质具有至少一个信息存储层，其具有用于存储信息的信息存储区域和用于对至少一个信息存储层执行读/写操作的控制信息区域。控制信息区域存储至少一组控制信息，该组控制信息包括包括要用作参考值的信息的第一种写入脉冲信息和包括要用作偏移值的信息的第二种写入脉冲信息。偏移值的大小至少是参考值的一半。

3. 发明授权

US08169883B2 Optical disk, method for manufacturing the same, and method for recording and method for reproducing data using optical disk 有权
标题翻译：光盘，其制造方法和记录方法以及使用光盘再现数据的方法
公开(公告)号：US08169883B2
公开(公告)日：2012-05-01
申请号：US10876494
申请日：2004-06-25
申请人： Naoyasu Miyagawa , Motoshi Ito
发明人： Naoyasu Miyagawa , Motoshi Ito
IPC分类号： G11B7/24
CPC分类号： G11B7/1267 , G11B7/0045 , G11B7/00736 , G11B7/24038 , G11B2007/0013
摘要： An optical disk includes a first information recording layer, and second to N-th information recording layers (with N being an integer of two or greater) that are arranged further toward the side from which laser light is irradiated than the first information recording layer and which are arranged in order from the side near the first information recording layer. The first information recording layer includes a read-only control data region, a first recording learning region for learning recording parameters to record data, and a first user data recording region for recording user data. When taking at least one of the second to N-th information recording layers as an i-th information recording layer (with i being an integer satisfying 2≦i≦N), that i-th information recording layer includes an i-th recording learning region for learning recording parameters to record data in the i-th information recording layer, and an i-th user data recording region for recording user data. The first recording learning region and the i-th recording learning region are arranged at different radial positions, and the i-th recording learning region is arranged within a region of radial positions at which the control data region is provided.
摘要翻译：光盘包括第一信息记录层和第二至第N信息记录层（N为2以上的整数），其被配置为比第一信息记录层更靠近照射激光的一侧，它们从第一信息记录层附近的一侧排列。第一信息记录层包括只读控制数据区，用于学习用于记录数据的记录参数的第一记录学习区和用于记录用户数据的第一用户数据记录区。当将第二至第N信息记录层中的至少一个作为第i信息记录层（i为满足2＆nlE; i＆nlE; N的整数）时，第i信息记录层包括第i个记录用于学习记录参数以在第i个信息记录层中记录数据的学习区域和用于记录用户数据的第i个用户数据记录区域。第一记录学习区域和第i记录学习区域被布置在不同的径向位置，并且第i个记录学习区域被布置在设置有控制数据区域的径向位置的区域内。

4. 再颁专利

USRE41918E1 Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses 有权
公开(公告)号：USRE41918E1
公开(公告)日：2010-11-09
申请号：US09460223
申请日：1999-12-13
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh
IPC分类号： G09B19/017 , G09B23/033 , G09B23/088 , G09B7/005 , G09B7/042
CPC分类号： G11B7/085 , G11B7/0037 , G11B7/08505 , G11B7/12 , G11B7/124 , G11B7/1245 , G11B7/1353 , G11B7/1374 , G11B7/1378 , G11B7/13925 , G11B19/12 , G11B23/0302 , G11B23/30 , G11B2007/0006
摘要： An optical disc apparatus for recording, reproducing or erasing an information signal by converging a light flux onto a recording layer through a transparent substrate. The apparatus includes one or a plurality of optical heads having a plurality of objective lenses whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses, a cartridge for enclosing the optical disc, a discrimination hole which is formed on the cartridge, and a sensor for detecting the opening/closing state of the discrimination hole and for generating a discrimination signal. In accordance with the result of the discrimination as to the thickness of the loaded optical disc, the objective lens, in which the occurrence of the aberration is smallest, is used, so that the information signal can preferably be recorded, reproduced or erased onto/from the optical discs having different substrate thicknesses. Instead of an optical head having objective lenses, an optical head having a waveguide and a plurality of converging grating couplers whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses is provided to achieve the same object. An optical recording/reproducing apparatus for recording, reproducing or erasing an information signal onto/from an optical disc having at least a transparent substrate and an information layer by converging a light flux on the information layer through the transparent substrate. The apparatus includes optical converging devices, with different numerical apertures, focal distances or working distances, such as objective lenses or grating lenses, for performing aberration correction over a plurality of transparent substrates of different thicknesses of optical discs and a device for discriminating the type of optical disc based on the thicknesses of the transparent substrates. One of the optical converging devices that generates the least aberration is used according to a result of the discrimination of the thickness of the optical disk loaded in the apparatus to cause the information signal to be suitably recorded, reproduced or erased onto/from the optical discs having the different substrate thicknesses.

5. 发明授权

US07701813B2 Method for recording to and reproducing from an optical recording medium, optical recording medium, and recording and reproduction apparatus for the same 有权
标题翻译：通过调整激光束的光斑直径来记录信息并从光记录介质再现信息的方法，以及用于其的记录和再现装置
公开(公告)号：US07701813B2
公开(公告)日：2010-04-20
申请号：US10568595
申请日：2005-07-08
申请人： Naoyasu Miyagawa
发明人： Naoyasu Miyagawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/007 , G11B7/00736 , G11B7/0901 , G11B2007/0006
摘要： A method for recording and reproducing information to/from with an optical recording medium, with which either in-groove recording or on-groove recording is selected according to a type of the recording medium, and information can be recorded and reproduced with good signal quality. In this method a laser beam is reflected by an information recording layer and is received by a photodetector that has been split into at least two parts by a split line parallel to the direction of the grooves. Further, the laser beam is reflected in a region in which a groove width is greater than a width between grooves, and the method determines whether the grooves on a side where the laser beam is incident are convex or concave based on a sum signal and a difference signal of photodetection signals outputted from the photodetector.
摘要翻译：一种用于根据记录介质的类型选择槽内记录或槽内记录的用于记录和再现信息的方法，并且可以以良好的信号质量来记录和再现信息。在该方法中，激光束被信息记录层反射，并且被光电检测器接收，该光电检测器通过平行于凹槽方向的分割线分成至少两部分。此外，激光束被反射在槽宽度大于槽之间的宽度的区域中，并且该方法基于和信号确定激光束入射侧的沟槽是凸的还是凹的，从光电检测器输出的光检测信号的差分信号。

6. 再颁专利

USRE40908E1 Optical recording/reproducing apparatus for optical disks with various disk substrate thickness 有权
公开(公告)号：USRE40908E1
公开(公告)日：2009-09-08
申请号：US09609829
申请日：1999-11-22
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh
IPC分类号： G11B7/00
CPC分类号： G11B7/085 , G11B7/0037 , G11B7/08505 , G11B7/12 , G11B7/124 , G11B7/1245 , G11B7/1353 , G11B7/1374 , G11B7/1378 , G11B7/13925 , G11B19/12 , G11B23/0302 , G11B23/30 , G11B2007/0006
摘要： An optical disc apparatus for recording, reproducing or erasing an information signal by converging a light flux onto a recording layer through a transparent substrate. The apparatus includes one or a plurality of optical heads having a plurality of objective lenses whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses, a cartridge for enclosing the optical disc, a discrimination hole which is formed on the cartridge, and a sensor for detecting the opening/closing state of the discrimination hole and for generating a discrimination signal. In accordance with the result of the discrimination as to the thickness of the loaded optical disc, the objective lens, in which the occurrence of the aberration is smallest, is used, so that the information signal can preferably be recorded, reproduced or erased onto/from the optical discs having different substrate thicknesses. Instead of an optical head having objective lenses, an optical head having a waveguide and a plurality of converging grating couplers whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses is provided to achieve the same object. An optical recording/reproducing apparatus for recording, reproducing or erasing an information signal onto/from an optical disc having at least a transparent substrate and an information layer by converging a light flux on the information layer through the transparent substrate. The apparatus includes optical converging devices, with different numerical apertures, focal distances or working distances, such as objective lenses or grating lenses, for performing aberration correction over a plurality of transparent substrates of different thicknesses of optical discs and a device for discriminating the type of optical disc based on the thicknesses of the transparent substrates. One of the optical converging devices that generates the least aberration is used according to a result of the discrimination of the thickness of the optical disc loaded in the apparatus to cause the information signal to be suitably recorded, reproduced or erased onto/from the optical discs having the different substrate thicknesses.

7. 发明授权

US07492687B2 Optical information recording method, optical information recording and reproducing device, and optical information recording medium 有权
标题翻译：光信息记录方法，光信息记录再现装置和光信息记录介质
公开(公告)号：US07492687B2
公开(公告)日：2009-02-17
申请号：US11903019
申请日：2007-09-20
申请人： Naoyasu Miyagawa , Kenichi Nishiuchi
发明人： Naoyasu Miyagawa , Kenichi Nishiuchi
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/00454 , G11B7/007 , G11B2007/0013
摘要： A plurality of types of recording pulse control rules for which the recording pulse waveform is determined according to the information signals to be recorded are stored in advance in an optical disk. When recording to the optical disk, information is recorded using a recording pulse where, due to the focused laser beam, the temperature in the recording layer cools more rapidly at a second information recording layer closer to the side where light is incident than at a first information recording layer farther away from the side where light is incident.
摘要翻译：根据要记录的信息信号确定记录脉冲波形的多种类型的记录脉冲控制规则被预先存储在光盘中。当记录到光盘时，使用记录脉冲记录信息，其中由于聚焦的激光束，记录层中的温度在更靠近光入射的一侧的第二信息记录层处比在第一信息记录层远离光入射的一侧。

8. 发明授权

US07450480B2 Optical information recording method, optical information recording device and optical information recording medium 有权
标题翻译：光信息记录方法，光信息记录装置和光信息记录介质
公开(公告)号：US07450480B2
公开(公告)日：2008-11-11
申请号：US10852113
申请日：2004-05-25
申请人： Kenji Narumi , Naoyasu Miyagawa
发明人： Kenji Narumi , Naoyasu Miyagawa
IPC分类号： G11B7/00
CPC分类号： G11B7/00456 , G11B7/00454 , G11B7/1267
摘要： A recording and reproducing method is provided in which information can be recorded and reproduced correctly using a simple circuit structure, even with a high transfer rate, and a test record can be performed efficiently in a short time. A laser driving circuit 6 makes power levels of a front end pulse and a rear end pulse different from a power level of a middle pulse, and a record signal edge correction circuit 5 corrects an edge position of a recording pulse.
摘要翻译：提供一种记录和再现方法，其中即使以高传输速率，也可以使用简单的电路结构正确地记录和再现信息，并且可以在短时间内有效地执行测试记录。激光驱动电路6使前端脉冲和后端脉冲的功率电平与中间脉冲的功率电平不同，并且记录信号边缘校正电路5校正记录脉冲的边缘位置。

9. 再颁专利

USRE39883E1 Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses 有权
公开(公告)号：USRE39883E1
公开(公告)日：2007-10-16
申请号：US10677168
申请日：2003-10-02
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh
IPC分类号： G11B23/30 , G11B7/00 , G11B19/12 , G11B23/03
CPC分类号： G11B7/085 , G11B7/0037 , G11B7/08505 , G11B7/12 , G11B7/124 , G11B7/1245 , G11B7/1353 , G11B7/1374 , G11B7/1378 , G11B7/13925 , G11B19/12 , G11B23/0302 , G11B23/30 , G11B2007/0006
摘要： An optical disc apparatus for recording, reproducing or erasing an information signal by converging a light flux onto a recording layer through a transparent substrate. The apparatus includes one or a plurality of optical heads having a plurality of objective lenses whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses, a cartridge for enclosing the optical disc, a discrimination hole which is formed on the cartridge, and a sensor for detecting the opening/closing state of the discrimination hole and for generating a discrimination signal. In accordance with the result of the discrimination as to the thickness of the loaded optical disc, the objective lens, in which the occurrence of the aberration is smallest, is used, so that the information signal can preferably be recorded, reproduced or erased onto/from the optical discs having different substrate thicknesses. Instead of an optical head having objective lenses, an optical head having a waveguide and a plurality of converging grating couplers whose aberrations have respectively been corrected for a plurality of disc substrates of different thicknesses is provided to achieve the same object. An optical recording/reproducing apparatus for recording, reproducing or erasing an information signal onto/from an optical disc having at least a transparent substrate and an information layer by converging a light flux on the information layer through the transparent substrate. The apparatus includes optical converging devices, with different numerical apertures, focal distances or working distances, such as objective lenses or grating lenses, for performing aberration correction over a plurality of transparent substrates of different thicknesses of optical discs and a device for discriminating the type of optical disc based on the thicknesses of the transparent substrates. One of the optical converging devices that generates the least aberration is used according to a result of the discrimination of the thickness of the optical disk loaded in the apparatus to cause the information signal to be suitably recorded, reproduced or erased onto/from the optical discs having the different substrate thicknesses.

10. 发明申请

US20050078594A1 Method of recording information, equipment thereof and information recording medium 有权
标题翻译：记录信息的方法，设备和信息记录介质
公开(公告)号：US20050078594A1
公开(公告)日：2005-04-14
申请号：US10947255
申请日：2004-09-23
申请人： Katsuyuki Takahashi , Kenichi Nishiuchi , Naoyasu Miyagawa , Takashi Nishihara
发明人： Katsuyuki Takahashi , Kenichi Nishiuchi , Naoyasu Miyagawa , Takashi Nishihara
IPC分类号： G11B5/09 , G11B7/00 , G11B7/0045 , G11B7/007 , G11B7/2403 , G11B7/24038 , G11B7/24094 , G11B7/26 , G11B20/10 , G11B7/24
CPC分类号： G11B7/00454 , G11B7/00736 , G11B7/2403 , G11B7/24038 , G11B7/24094 , G11B7/268 , G11B2007/0013
摘要： Because conditions for recording identification data of a medium vary in accordance with the structure of different media, such as a single-layer or a multiple-layer structure, stable data recording has been a difficult task. To solve this problem, an incident side of the laser beam for recording identification data on a single-layer optical disk 5 and a double-layer optical disk 6 is the opposite side of a substrate 1 upon which user data is recorded. From this structure, even in a double-layer optical disk 6, the recording is not affected by the recording layer of a second layer 12b and the like. Therefore, in the double-layer optical disk 6, identification data of the medium can be recorded under the same conditions as the single-layer optical disk 5.
摘要翻译：由于用于记录介质的识别数据的条件根据诸如单层或多层结构的不同介质的结构而变化，因此稳定的数据记录是一项艰巨的任务。为了解决这个问题，用于在单层光盘5和双层光盘6上记录识别数据的激光束的入射侧是记录用户数据的基板1的相反侧。根据该结构，即使在双层光盘6中，记录也不受第二层12b等的记录层的影响。因此，在双层光盘6中，可以在与单层光盘5相同的条件下记录介质的识别数据。

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