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11. 再颁专利

USRE36445E Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses 失效
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.

12. 发明授权

US5475662A Optical disc apparatus with tracking error compensation 失效
标题翻译：具有跟踪误差补偿的光盘设备
公开(公告)号：US5475662A
公开(公告)日：1995-12-12
申请号：US175352
申请日：1994-01-05
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh
IPC分类号： G11B7/007 , G11B7/09 , G11B7/00
CPC分类号： G11B7/00718 , G11B7/094
摘要： An optical disc apparatus, which uses an optical disc having a signal recorded on both hollow and convex portions of tracks, provides stable tracking control. An offset judging circuit judges whether the signal has been recorded only on either of two recording regions adjacent in a vertical direction to the track direction. An offset application circuit applies an offset voltage to an error signal on the basis of a control signal output in accordance with the result of the offset judging means. This effectively cancels an offset in the tracking error signal caused by the existence of recording pits only on an inner circumference side or outer circumference side of an adjacent recording track to provide stable tracking control. Moreover, addresses of presently recorded regions are stored in a recorded address control memory, so that detection that the signal has been recorded on either of two adjacent recording regions can be performed with a simple structure.
摘要翻译： PCT No.PCT / JP93 / 00630 Sec。 371日期1994年1月5日 102（e）日期1994年1月5日PCT提交1993年5月13日PCT公布。公开号WO93 / 23848 日期：1993年11月25日。使用具有记录在轨道的两个中空部分和凸部上的信号的光盘的光盘装置提供稳定的跟踪控制。偏移判断电路判断信号是否仅记录在与轨道方向垂直的方向上相邻的两个记录区域中的任一个。偏移应用电路根据根据偏移判定装置的结果输出的控制信号，将偏移电压施加到误差信号。这有效地消除了仅在相邻记录磁道的内周侧或外周侧存在记录凹坑引起的跟踪误差信号中的偏移，以提供稳定的跟踪控制。此外，当前记录的区域的地址被存储在记录的地址控制存储器中，使得可以以简单的结构来执行信号已被记录在两个相邻记录区域中的任一个上的检测。

13. 发明授权

US5231617A Optical information recording and reproducing apparatus and method of recording and reproducing information in an optical disk unit 失效
标题翻译：光信息记录和再现装置以及在光盘单元中记录和再现信息的方法
公开(公告)号：US5231617A
公开(公告)日：1993-07-27
申请号：US938675
申请日：1992-09-01
申请人： Isao Satoh , Sadao Mizuno , Noboru Yamada , Yasuhiro Gotoh
发明人： Isao Satoh , Sadao Mizuno , Noboru Yamada , Yasuhiro Gotoh
IPC分类号： G11B7/004 , G11B19/02
CPC分类号： G11B7/004 , G11B19/02
摘要： The present invention provides a large-capacity stack type optical disk unit capable of information recording and reproducing operation at a high speed and an optical information recording and reproducing apparatus for recording/reproducing information onto/from the stack type optical disk unit. The optical information recording and reproducing apparatus comprises a stack type optical disk unit having N recording faces, the sector starting position on the respective recording faces are displaced by a sector as unit from one face to another, one stationary optical units including a laser light source, a collimator, a reflector and a detector for a reflected beam from the recording faces, N sets of focusing units each for focusing a collimated beam onto respective recording faces, a beam distribution unit for distributing the collimated beam to the focusing units, and a servo unit for focussing outputs from the focusing units onto tracks of the recording faces and for performing tracking. Owing to the above described configuration, information can be consecutively recorded onto/reproduced from a desired track sector without an extra disk rotation waiting time when recording/reproducing operation is switched from a recording face to an adjacent recording face of the stack type optical disk unit.
摘要翻译：本发明提供一种能够高速信息记录和再现操作的大容量堆叠型光盘单元和用于在/从堆叠型光盘单元上记录/再现信息的光信息记录和再现设备。光信息记录和再现装置包括具有N个记录面的堆叠型光盘单元，各个记录面上的扇区开始位置以从一个面到另一个单位的扇区移位，一个固定光学单元包括激光光源，用于来自记录面的反射光束的准直器，反射器和检测器，用于将准直光束聚焦到各个记录面上的N组聚焦单元，用于将准直光束分配到聚焦单元的光束分配单元，以及伺服单元，用于将来自聚焦单元的输出聚焦到记录面的轨道上并用于执行跟踪。由于上述配置，当记录/再现操作从堆叠型光盘单元的记录面切换到相邻记录面时，可以将信息连续地记录到期望的轨道扇区/再现上，而不需要额外的盘旋转等待时间。

14. 发明授权

US4525657A Torque ripple compensation circuit for a brushless D.C. motor 失效
标题翻译：无刷直流电机的扭矩波纹补偿电路
公开(公告)号：US4525657A
公开(公告)日：1985-06-25
申请号：US587252
申请日：1984-03-07
申请人： Hiromi Nakase , Yasuhiro Gotoh , Kuniichi Ozawa
发明人： Hiromi Nakase , Yasuhiro Gotoh , Kuniichi Ozawa
IPC分类号： H02P6/10 , H02P6/02
CPC分类号： H02P6/10
摘要： In an electronic commutated motor, ripple of driving torque is perfectly compensated into uniform torque by controlling stator current; therein mechanical 360.degree. angle of rotation of the rotor magnet is divided into e.g. 12 partitioned ranges (of 30.degree.), said compensation being made by repeatedly reading out the same compensation data for the 30.degree. range by utilizing an address counter which is reset at each beginning of said partitioned ranges.
摘要翻译：在电子换向电机中，通过控制定子电流，将驱动转矩的纹波完美地补偿为均匀的转矩; 其中转子磁体的机械360度旋转角度被分成例如。 12个分区范围（30°），所述补偿是通过利用在所述分区范围的每个开始被重置的地址计数器反复读出30度范围的相同补偿数据来进行的。

15. 再颁专利

USRE41928E1 Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses 有权
公开(公告)号：USRE41928E1
公开(公告)日：2010-11-16
申请号：US09420603
申请日：1999-10-19
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh
IPC分类号： G09B19/017 , G09B23/033 , G09B23/088 , G09B7/042 , G09B7/043
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.

16. 再颁专利

USRE40229E1 Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses 有权
公开(公告)号：USRE40229E1
公开(公告)日：2008-04-08
申请号：US09460222
申请日：1999-12-13
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 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.

17. 再颁专利

USRE40017E1 Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses 有权
公开(公告)号：USRE40017E1
公开(公告)日：2008-01-22
申请号：US10693810
申请日：2003-10-23
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh
IPC分类号： G11B7/11
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 aberations have respectivley 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 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.

18. 发明授权

US06487147B2 Optical information recording medium and an optical information recording/reproduction device 有权
公开(公告)号：US06487147B2
公开(公告)日：2002-11-26
申请号：US10056129
申请日：2002-01-25
申请人： Naoyasu Miyagawa , Yasuhiro Gotoh , Tetsuya Akiyama
发明人： Naoyasu Miyagawa , Yasuhiro Gotoh , Tetsuya Akiyama
IPC分类号： G11B7095
CPC分类号： G11B7/007 , B60H1/00264 , G11B7/00718 , G11B7/00745 , G11B7/0904 , G11B7/0938 , G11B7/24 , G11B7/24085 , G11B11/10586
摘要： An optical information recording medium according to the present invention includes at least one groove track and at least one land track allowing information to be recorded on or reproduced from the groove track and the land track, the groove track and the land track adjoining each other. The optical information recording medium further includes: an identification signal region including a pre-pit array, the pre-pit array indicating identification information concerning the groove track and the land track; and a servo control region disposed ahead of the identification signal region along the groove track and the land track, the servo control region including wobble pits positioned so as to shift to opposite sides of a center line of either the groove track or the land track.

19. 发明授权

US5255260A Optical recording apparatus employing stacked recording media with spiral grooves and floating optical heads 失效
标题翻译：采用具有螺旋槽和浮动光头的堆叠记录介质的光记录装置
公开(公告)号：US5255260A
公开(公告)日：1993-10-19
申请号：US555639
申请日：1990-07-23
申请人： Noboru Yamada , Isao Satoh , Sadao Mizuno , Yasuhiro Gotoh
发明人： Noboru Yamada , Isao Satoh , Sadao Mizuno , Yasuhiro Gotoh
IPC分类号： G11B7/0045 , G11B7/12 , G11B7/14 , G11B7/243 , G11B7/254 , G11B7/257 , G11B7/258 , G11B7/2595 , G11B17/028 , G11B7/24
CPC分类号： G11B7/254 , G11B7/00454 , G11B7/12 , G11B7/122 , G11B7/14 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25417 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716 , G11B7/2595
摘要： The apparatus includes optical recording media each of which includes a single plate substrate with recording layers and spiral grooves formed on both sides of the substrate and which are available for recording and reproduction or for recording, erasing and reproduction via irradiation with laser beams. Both surfaces of the recording media are available for simultaneous access, and a plurality of thin floating-type optical heads are provided to irradiate laser beams onto the recording media. The optical heads are respectively provided at each side of the recording media and float, responsive to rotation of the recording media, above the respective surfaces of the recording media at a distance of at most hundreds of microns. The combination of these optical recording media and optical heads makes it possible to stack plural pairs thereof within an ultra-thin space, thus greatly improving the on-line capacity of the optical recording apparatus.

20. 发明授权

US07239588B2 Method and apparatus for detecting foreign body on object surface, and optical disk apparatus 失效
标题翻译：用于检测物体表面异物的方法和装置，以及光盘装置
公开(公告)号：US07239588B2
公开(公告)日：2007-07-03
申请号：US10516023
申请日：2003-05-30
申请人： Yasuhiro Gotoh , Seiji Nishiwaki , Yoshiaki Komma
发明人： Yasuhiro Gotoh , Seiji Nishiwaki , Yoshiaki Komma
IPC分类号： G01N21/88
CPC分类号： G11B7/00375 , G01N21/94 , G01N21/9506 , G01N2201/1045 , G11B19/04
摘要： In an foreign body detection apparatus, an optical signal detection unit irradiates a light spot onto a surface of an object to be inspected while scanning the surface by employing the light spot in a predetermined direction, and receives a reflected beam from the surface of the inspected object to generate a photodetection signal corresponding to the light intensity of the reflected beam. A foreign body detection unit generates a foreign body detection signal appearing with respect to a leader and a trailer in the scanning direction of a foreign body adhering to the inspected object from the photodetection signal. The foreign body detection signal is obtained, for example, as a difference signal between the photodetection signal and a delayed photodetection signal with a predetermined delay time. A foreign body discrimination unit generates a foreign body discriminating signal indicating a region in which the foreign body is present from the foreign body detection signal.
摘要翻译：在异物检测装置中，光信号检测单元通过在预定方向上采用光点扫描表面，将光斑照射到待检查物体的表面上，并从被检查的表面接收反射光束目的是产生对应于反射光束的光强度的光电检测信号。异物检测单元从与光检测信号相对的被检查物体的异物的扫描方向上的引导部和拖车上产生异物检测信号。例如，异物检测信号作为光检测信号和延迟光检测信号之间的差信号，具有预定的延迟时间。异物识别单元从异物检测信号生成表示异物存在的区域的异物识别信号。

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