公开(公告)号：US20080175138A1

公开(公告)日：2008-07-24

申请号：US10568595

申请日：2005-07-08

申请人： Naoyasu Miyagawa

发明人： Naoyasu Miyagawa

IPC分类号： G11B7/24 ,  G11B7/09 ,  G11B7/004 ,  G11B7/007

CPC分类号： G11B7/0945 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0901 ,  G11B2007/0006

摘要： The present invention provides a method for recording and reproducing with an optical recording medium, with which either in-groove recording or on-groove recording is selected according to the type of recording medium, and information can be recorded and reproduced with good signal quality. To this end, a laser beam reflected by an information recording layer 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, in a region in which the groove width is greater than the width between grooves, and it is determined whether the grooves on the side where the laser beam is incident are convex or concave on the basis of a sum signal and difference signal of the photodetection signals outputted from the split photodetector.

摘要翻译： 本发明提供了一种用光学记录介质进行记录和再现的方法，根据记录介质的类型选择槽内记录或槽内记录，并且可以以良好的信号质量记录和再现信息。 为此，由信息记录层反射的激光束被光电检测器接收，该光电检测器通过平行于槽的方向的分割线在槽宽度大于的区域中被分成至少两部分 槽之间的宽度，并且基于从分离光电检测器输出的光电检测信号的和信号和差信号来确定激光束入射侧的沟槽是凸的还是凹的。

公开(公告)号：USRE40133E1

公开(公告)日：2008-03-04

申请号：US09460221

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.

公开(公告)号：US07292525B2

公开(公告)日：2007-11-06

申请号：US11204965

申请日：2005-08-16

申请人： Naoyasu Miyagawa ,  Kenichi Nishiuchi

发明人： Naoyasu Miyagawa ,  Kenichi Nishiuchi

IPC分类号： G11B3/70 ,  G11B11/00

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：USRE39860E1

公开(公告)日：2007-09-25

申请号：US10677167

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：US07095705B2

公开(公告)日：2006-08-22

申请号：US11087307

申请日：2005-03-23

申请人： Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Eiji Ohno ,  Nobuo Akahira

发明人： Kenichi Nishiuchi ,  Naoyasu Miyagawa ,  Eiji Ohno ,  Nobuo Akahira

IPC分类号： G11B7/24

CPC分类号： G11B11/10595 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00736 ,  G11B7/08505 ,  G11B7/08511 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/126 ,  G11B7/1267

摘要： An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a recording medium is disclosed. The optical information recording and reproducing apparatus includes: an optical portion for focusing a light beam emitted from a light source on the recording medium; a focusing control portion for controlling a focal point of the light beam; a tracking control portion for controlling the position of the light beam; a selection portion for selecting which of the concave portions and the convex portions of the guide grooves are used for recording or reproducing; a polarity inverting portion for inverting the polarity of an output signal from the tracking control portion depending on a result selected by the selection portion; a waveform setting portion for setting a modulation pattern for the light; and a signal reproduction portion for demodulating the information signal from a light reflected or transmitted by recorded marks recorded on the recording medium; wherein at least one of the focusing control portion, the tracking control portion, the waveform setting portion and the signal reproduction portion has at least two kinds of operation conditions for recording and reproducing the information signal on/from the concave portions and the convex portions of the guide grooves, and wherein the operation conditions are selected depending on the result selected by the selection portion.

公开(公告)号：US20060139803A1

公开(公告)日：2006-06-29

申请号：US10531387

申请日：2003-08-22

申请人： Shigeaki Furukawa ,  Naoyasu Miyagawa ,  Kenichi Nishiuchi

发明人： Shigeaki Furukawa ,  Naoyasu Miyagawa ,  Kenichi Nishiuchi

IPC分类号： G11B5/74

CPC分类号： G11B7/00736 ,  G11B7/005 ,  G11B7/24038 ,  G11B2007/0013

摘要： During reproduction of a multilayer recording medium including three or more information layers, a light beam is irradiated onto a target information layer. A reflected light from the information layer is mainly detected to generate an information signal RF1, while reflected lights from the other information layers than the target layer are detected to generate an information signal RF2. The signal RF2 is amplified by a gain which is adjusted based on a predetermined cross talk information. A difference between the information signal RF1 and the amplified cross talk signal RF2 is obtained to cancel a component of the cross talk signal in the information signal RF1 and generate a reproduction signal RF3 indicating information recorded in the target information layer to be reproduced.

摘要翻译： 在包括三个或更多个信息层的多层记录介质的再现期间，将光束照射到目标信息层上。 主要检测来自信息层的反射光以产生信息信号RF 1，同时检测来自其它信息层的反射光比目标层，以产生信息信号RF 2。 信号RF 2被基于预定的串音信息调整的增益放大。 获得信息信号RF 1和放大的串扰信号RF 2之间的差异以消除信息信号RF 1中的串扰信号的分量，并产生指示记录在目标信息层中的信息的再现信号RF 3 转载。

公开(公告)号：US20050117481A1

公开(公告)日：2005-06-02

申请号：US10992364

申请日：2004-11-19

申请人： Tetsuya Akiyama ,  Naoyasu Miyagawa

发明人： Tetsuya Akiyama ,  Naoyasu Miyagawa

IPC分类号： G11B7/0045 ,  G11B7/00 ,  G11B7/125 ,  G11B15/087 ,  G11B5/09

CPC分类号： G11B7/1267 ,  G11B2007/0013

摘要： A method for recording information on an optical information recording medium 1, 11 having a plurality of recording layers for recording, reproducing or erasing data by irradiating a laser beam from one side, includes a temporary pulse condition determination step (S502), a test area reflected light measurement step (S502), a final pulse condition determination step (S503-S506) and a recording execution step (S506). The temporary pulse condition determination step includes performing test recordings on a test recording layer that is at least one recording layer among a plurality of recording layers and determining a temporary pulse condition including a laser beam intensity. The test area reflected light measurement step includes measuring a test area reflected light level that is a reflected light level of the laser beam in an area for the test recording. The final pulse condition determination step includes correcting the temporary pulse condition in accordance with the measured test area reflected light level so as to determine a final pulse condition. The recording execution step includes recording data with the final pulse condition.

摘要翻译： 一种用于在具有多个用于通过从一侧照射激光来记录，再现或擦除数据的记录层的光学信息记录介质1,11上记录信息的方法包括暂时脉冲条件确定步骤（S 502），测试 区域反射光测量步骤（S 502），最终脉冲条件确定步骤（S 503 -S606）和记录执行步骤（S506）。 临时脉冲条件确定步骤包括在多个记录层中的至少一个记录层的测试记录层上执行测试记录，并确定包括激光束强度的临时脉冲条件。 测试区域反射光测量步骤包括测量作为测试记录区域中的激光束的反射光水平的测试区域反射光水平。 最终脉冲条件确定步骤包括根据测量的测试区域反射光电平校正临时脉冲条件，以便确定最终脉冲条件。 记录执行步骤包括以最终脉冲条件记录数据。

公开(公告)号：US20050068870A1

公开(公告)日：2005-03-31

申请号：US10938595

申请日：2004-09-13

申请人： Kenji Narumi ,  Naoyasu Miyagawa ,  Kenichi Nishiuchi

发明人： Kenji Narumi ,  Naoyasu Miyagawa ,  Kenichi Nishiuchi

IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B7/1267 ,  G11B19/12 ,  G11B19/26 ,  G11B19/28 ,  G11B5/09

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B7/0079 ,  G11B19/12 ,  G11B19/26 ,  G11B19/28

摘要： The object of the present invention is to reduce the time of a test recording when using the CAV recording method, and to allow a spindle motor to be inexpensive. When performing a test recording using a medium which has a CAV recording format, a test recording area 24 for use at an intermediate linear velocity is provided at a radial position where the rotation speed of the medium is equal to or less than the rotation speed of the medium when performing information recording, and a test recording area 22 for use at a minimum linear velocity and a test recording area 23 for use at a maximum linear velocity are provided at a radial position where the rotation speed of the medium is equivalent to the rotation speed of the medium when performing information recording.

摘要翻译： 本发明的目的是在使用CAV记录方法时减少测试记录的时间，并且允许主轴电机便宜。 当使用具有CAV记录格式的介质进行测试记录时，在中间线速度下使用的测试记录区域24设置在介质旋转速度等于或小于 在执行信息记录时的介质以及以最小线速度使用的测试记录区域22和以最大线速度使用的测试记录区域23设置在介质的转速等于 执行信息记录时介质的转速。

公开(公告)号：US06744706B2

公开(公告)日：2004-06-01

申请号：US10260672

申请日：2002-09-30

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： A61B6/0421 ,  A61B5/0555 ,  G11B7/007 ,  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.

摘要翻译： 根据本发明的光学信息记录介质包括至少一个凹槽轨道和至少一个脊迹道，其允许将信息记录在凹槽轨道和脊迹道，凹槽轨道和脊迹道之间彼此相邻的凹槽轨迹和/ 所述光信息记录介质还包括：包括预凹坑阵列的识别信号区域，所述预凹坑阵列指示关于所述凹槽轨道和所述脊迹轨迹的识别信息; 以及伺服控制区域，其设置在沿着凹槽轨道和槽脊轨迹的识别信号区域前方，所述伺服控制区域包括摆动凹坑，定位成移动到凹槽轨道或槽脊轨迹的中心线的相对侧。

公开(公告)号：US5835479A

公开(公告)日：1998-11-10

申请号：US727307

申请日：1996-10-08

申请人： Naoyasu Miyagawa ,  Yoshito Aoki ,  Takashi Ishida ,  Shunji Ohara

发明人： Naoyasu Miyagawa ,  Yoshito Aoki ,  Takashi Ishida ,  Shunji Ohara

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B20/12 ,  G11B7/24

CPC分类号： G11B7/24079 ,  G11B7/00718 ,  G11B7/0079 ,  G11B7/013 ,  G11B2020/1259 ,  G11B7/00745 ,  G11B7/24085

摘要： A read-only zone or control zone is formed in an optical information recording medium wherein information signal are formed in both grooves and lands. Grooves are not formed in the control zone or read-only zone, and read-only data such as control data, audio-video data, or computer data is pre-recorded as a sequence of pre-formed pits on the track center line. The track pitch of the pre-formed pit sequences in the control zone or read-only zone is equal to the groove pitch in the read-write zones.

摘要翻译： 光信息记录介质中形成只读区域或控制区，其中信息信号形成在凹槽和平台中。 在控制区域或只读区域中不形成沟槽，并且诸如控制数据，音频 - 视频数据或计算机数据的只读数据被预先记录在轨道中心线上的预先形成的凹坑序列。 控制区域或只读区域中预先形成的凹坑序列的轨迹间距等于读写区域中的凹槽间距。