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。

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.

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。

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.

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。

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。

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.

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。

公开(公告)号：US06526013B1

公开(公告)日：2003-02-25

申请号：US09559555

申请日：2000-04-27

申请人： Kenji Narumi ,  Naoyasu Miyagawa

发明人： Kenji Narumi ,  Naoyasu Miyagawa

IPC分类号： G11B700

CPC分类号： G11B7/0045 ,  G11B7/0062 ,  G11B7/126 ,  G11B7/1263 ,  G11B7/1267

摘要： An optical information recording apparatus, an optical information recording method, and an optical information recording medium that enable information signals to be recorded precisely by determining recording conditions such as recording power, edge positions of recording pulses, and the like suitably before recording information signals. An edge test signal generation circuit supplies a test signal for optimizing edge positions of recording pulses. In order to suppress the variation in intervals between edges due to mark distortion caused by overwriting, test recording is carried out using this test signal in a plurality of sectors on the optical information recording medium with a test recording start point being shifted at random in each sector by a recording start point shifting circuit. A system control circuit calculates an average of intervals between edges in test signals reproduced from the plurality of sectors and determines the difference between the average and an original interval between edges in the test signal, thus determining a compensation volume for edge positions.

公开(公告)号：USRE36445E

公开(公告)日：1999-12-14

申请号：US396981

申请日：1995-03-01

申请人： Naoyasu Miyagawa ,  Yasuhiro Gotoh

发明人： Naoyasu Miyagawa ,  Yasuhiro Gotoh

IPC分类号： G11B7/00 ,  G11B7/0037 ,  G11B7/085 ,  G11B7/12 ,  G11B7/135 ,  G11B19/12 ,  G11B23/03 ,  G11B23/30

CPC分类号： G11B7/085 ,  G11B19/12 ,  G11B23/0302 ,  G11B23/30 ,  G11B7/0037 ,  G11B7/08505 ,  G11B7/12 ,  G11B7/124 ,  G11B7/1245 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13925 ,  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 or 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..]. .Iadd.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. .Iaddend.