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1. 发明授权

US5521901A Re-writable phase change type optical disk with suppressed recording mark distortion 失效
标题翻译：具有抑制记录标记失真的可重写相变型光盘
公开(公告)号：US5521901A
公开(公告)日：1996-05-28
申请号：US445501
申请日：1995-05-22
申请人： Mitsuya Okada , Shuichi Ohkubo , Tatsunori Ide
发明人： Mitsuya Okada , Shuichi Ohkubo , Tatsunori Ide
IPC分类号： G11B7/006 , G11B7/24 , G11B7/241 , G11B7/254 , G11B7/257 , G11B11/00
CPC分类号： G11B7/252 , G11B7/006 , G11B7/24 , G11B7/257 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716 , G11B7/2534 , G11B7/2585
摘要： A phase change type optical disk includes a transparent substrate, a recording layer, a first transparent protection layer, a reflective layer, and a transparent interference layer. The recording layer is formed above the transparent substrate to cause a reversible phase change between a crystalline state and an amorphous state. The recording layer causes a phase change upon being irradiated with a laser beam, thereby recording, reproducing, and erasing information. The first transparent protection layer is formed on the recording layer to protect the recording layer. The reflective layer is formed above the recording layer to reflect light transmitted through the recording layer and causes the reflected light to be incident on the recording layer. The transparent interference layer is formed between the first protection layer and the reflective layer to cause light beams reflected by the reflective layer to optically interfere with each other. Light transmitted through the recording layer is multiple-reflected between the reflective layer and an interface between the interference layer and the first protection layer.
摘要翻译：相变型光盘包括透明基板，记录层，第一透明保护层，反射层和透明干涉层。记录层形成在透明基板的上方，引起结晶状态和非晶态之间的可逆相变。记录层在用激光束照射时引起相变，从而记录，再现和擦除信息。第一透明保护层形成在记录层上以保护记录层。反射层形成在记录层上方，以反射透过记录层的光，并使反射光入射到记录层上。在第一保护层和反射层之间形成透明干涉层，使由反射层反射的光束彼此光学地干涉。透过记录层的光在反射层和干涉层与第一保护层之间的界面之间多重反射。

2. 发明授权

US5631895A Optical information recording medium 失效
标题翻译：光信息记录介质
公开(公告)号：US5631895A
公开(公告)日：1997-05-20
申请号：US544452
申请日：1995-10-18
申请人： Mitsuya Okada , Tatsunori Ide , Shuichi Ohkubo
发明人： Mitsuya Okada , Tatsunori Ide , Shuichi Ohkubo
IPC分类号： B41M5/26 , G11B7/0045 , G11B7/006 , G11B7/24 , G11B7/241 , G11B7/243 , G11B7/254 , G11B7/257 , G11B7/258 , G11B7/00
CPC分类号： G11B7/252 , G11B7/006 , G11B7/24 , G11B7/258 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716 , G11B7/00454 , G11B7/2433 , G11B7/2542
摘要： An optical information recording medium includes a transparent substrate, a first protection film, a recording film, a second protection film, a dielectric film, and a dielectric reflective film. The first protection film is formed on the transparent substrate. The recording film is formed on the first protection film to record and erase information by causing a reversible phase change between a crystalline state and an amorphous state upon being irradiated with a laser beam, and reproduce recorded information by detecting a change in optical nature accompanying the phase change in the recording film. The second protection film is formed on the recording film to protect the recording film together with the first protection film. The dielectric film is formed on the second protection film and has a refractive index lower than a refractive index of the transparent substrate. The dielectric reflective film is formed on the dielectric film and has a refractive index higher than the refractive index of the transparent substrate.
摘要翻译：光信息记录介质包括透明基板，第一保护膜，记录膜，第二保护膜，电介质膜和电介质反射膜。第一保护膜形成在透明基板上。记录膜形成在第一保护膜上以通过在用激光束照射之后引起结晶状态和非晶状态之间的可逆相变来记录和擦除信息，并且通过检测随着所述激光束的光学性质的变化来再现记录信息记录膜中的相变。第二保护膜形成在记录膜上，以与第一保护膜一起保护记录膜。电介质膜形成在第二保护膜上，折射率低于透明基板的折射率。介电反射膜形成在电介质膜上，折射率高于透明基板的折射率。

3. 发明授权

US06606293B1 Optical information recording medium and methods for recording, reading, and erasing information thereupon 失效
标题翻译：光学信息记录介质以及用于记录，读取和擦除信息的方法
公开(公告)号：US06606293B1
公开(公告)日：2003-08-12
申请号：US09478701
申请日：2000-01-06
申请人： Mitsuya Okada , Shuichi Ohkubo , Masaki Itoh
发明人： Mitsuya Okada , Shuichi Ohkubo , Masaki Itoh
IPC分类号： G11B70037
CPC分类号： G11B7/257 , G11B7/24 , G11B7/243 , G11B7/252 , G11B7/258 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： There is disclosed an optical information recording medium having phase-change recording films whose the transmittance can be made substantially uniform irrespective of the presence or absence of recording. There are also disclosed methods for recording, reading, and erasing information well at a high density on such a medium. Each of the phase-change recording films other than the top one has a phase-change recording film for recording and erasing information by a phase change caused by illumination of laser light. A transparent upper protective film is formed on the phase-change recording film to protect the phase-change recording film mainly against thermal deformation during recording and erasing of information. A transparent lower protective film is formed under the phase-change recording film to protect the phase-change recording film mainly against thermal deformation during recording and erasing of information. A foundation interference film is formed under the transparent lower protective film to adjust the transmittance of the phase-change recording film for the laser light.
摘要翻译：公开了一种具有相变记录膜的光学信息记录介质，其透射率可以基本上均匀，而不管记录是否存在。还公开了在这种介质上高密度地记录，读取和擦除信息的方法。除了顶部之外的每个相变记录膜具有用于通过由激光的照明引起的相位变化来记录和擦除信息的相变记录膜。在相变记录膜上形成透明的上保护膜，以在记录和擦除信息期间主要防止相变记录膜的热变形。在相变记录膜下面形成透明的下保护膜，以在记录和擦除信息期间主要防止相变记录膜的热变形。在透明下保护膜下方形成基础干涉膜，以调节激光用相变记录膜的透射率。

4. 发明授权

US5862122A Phase change optical disk and a method for recording and playbacking optical information on or from an optical disk 失效
标题翻译：相变光盘以及在光盘上记录和重放光学信息的方法
公开(公告)号：US5862122A
公开(公告)日：1999-01-19
申请号：US956781
申请日：1997-10-23
申请人： Mitsuya Okada , Shuichi Ohkubo
发明人： Mitsuya Okada , Shuichi Ohkubo
IPC分类号： B41M5/26 , G11B7/0055 , G11B7/007 , G11B7/24 , G11B7/243 , G11B7/254
CPC分类号： G11B7/243 , G11B7/00557 , G11B7/00718 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B7/2534 , G11B7/2542 , G11B7/2585
摘要： The optical phase difference between reflected laser light from the crystalline and the amorphous part of a phase change recording layer is established as 180 degrees .+-.5 degrees. The ratio between the light absorption factor when the phase change recording film is in the crystalline condition to that when it is in the amorphous condition is set to within the range 0.9 to 1.1. With the wavelength of the laser light used as .lambda., the optical depth of a guide groove formed on the substrate is set to within the range .lambda./9 to .lambda./6. With the wavelength of the laser light used in the range 635 nm to 650 nm, the depth of the guide groove is in the range 40 to 70 nm. In an optical disk such as this, when seen from reflected light, the groove region of a groove during playback and land region of the groove during playback are optically equivalent. For this reason, it is substantially the same as the case in which the optical phase difference between the reflected laser light from the crystalline part of the recording film and the reflected laser light from the amorphous part of the recording film is zero, this making it possible to achieve consistency in the signal levels between land playback and groove playback. As a result, it is possible to perform double track density recording and mark edge recording.
摘要翻译：来自晶体的反射激光与相变记录层的非晶部分之间的光学相位差建立为180度+/- 5度。当相变记录膜处于结晶状态时的光吸收系数与处于非晶态的光吸收系数之间的比率设定在0.9〜1.1的范围内。在激光的波长为λ的情况下，将形成在基板上的引导槽的光学深度设定在λ/ 9〜λ/ 6的范围内。使用在635nm至650nm范围内的激光的波长，导向槽的深度在40至70nm的范围内。在这样的光盘中，当从反射光中观察时，回放期间的槽的槽区域和回放期间的槽的槽脊区域在光学上相当。因此，与记录膜的结晶部分的反射激光和记录膜的非晶部分的反射激光之间的光学相位差为零的情况基本相同，这使得可以实现陆地播放和凹槽播放之间信号水平的一致性。结果，可以进行双轨密度记录和标记边缘记录。

5. 发明授权

US5906908A System and method for simultaneously verifying optical data writing and optical data writing medium for use therein 失效
标题翻译：用于同时验证用于其中的光学数据写入和光学数据写入介质的系统和方法
公开(公告)号：US5906908A
公开(公告)日：1999-05-25
申请号：US108914
申请日：1998-07-01
申请人： Shuichi Ohkubo , Mitsuya Okada , Masaki Itou
发明人： Shuichi Ohkubo , Mitsuya Okada , Masaki Itou
IPC分类号： G11B7/0045 , G11B7/005 , G11B7/0055 , G11B7/24 , G11B7/243 , G11B7/253 , G11B7/2534 , G11B7/2542 , G11B7/258 , G11B7/2585 , G11B7/2595 , G11B7/00
CPC分类号： G11B7/258 , G11B7/0045 , G11B7/00454 , G11B7/005 , G11B7/00557 , G11B7/24 , G11B7/243 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/2595 , Y10S430/146
摘要： The optical disk writing system disclosed is one in which a data written on an optical data writing medium is verified essentially simultaneously with the writing on the medium. The written data is verified by detecting a timing of the light irradiated on the medium and by measuring return light doses at a rise and a fall of the light irradiated on the medium and comparing the doses thereof with predetermined reference values. The medium used is one which uses a phase transition reversible between a crystal state and an amorphous state for writing/reading/erasing of data on a data writing film and includes, a first protective film, a phase transition type data writing film, a second protective film, a reflection film formed in this order on a transparent substrate. The thickness of the first protective film is set such that, of three reflectivities of the data writing film respectively in crystal, amorphous and melted states, the reflectivity in the crystal state and the reflectivity in the melted state are made different from each other, and the reflectivity in the amorphous state and the reflectivity in the melted state are made different from each other. A high speed writing operation can be carried out and an overwrite operation can be completed in one time disk rotation.
摘要翻译：所公开的光盘写入系统是其中写入光学数据写入介质的数据基本上与介质上的写入同时被验证的系统。通过检测照射在介质上的光的定时并通过在照射在介质上的光的上升和下降下测量返回光剂量并将其剂量与预定的参考值进行比较来验证书面数据。使用的介质是使用在晶体状态和非晶状态之间可逆的相转换用于在数据写入膜上写入/读取/擦除数据的介质，并且包括第一保护膜，相变型数据写入膜，第二保护膜，在透明基板上依次形成的反射膜。第一保护膜的厚度被设定为使得数据写入膜的三个反射率分别处于晶体，非晶态和熔融状态，晶体状态的反射率和熔融状态下的反射率彼此不同，使非晶态的反射率和熔融状态下的反射率彼此不同。可以执行高速写入操作，并且可以在一次盘旋转中完成重写操作。

6. 发明授权

US5798993A System and method for simultaneously verifying optical data writing and optical data writing medium for use therein 失效
标题翻译：用于同时验证用于其中的光学数据写入和光学数据写入介质的系统和方法
公开(公告)号：US5798993A
公开(公告)日：1998-08-25
申请号：US651301
申请日：1996-05-22
申请人： Shuichi Ohkubo , Mitsuya Okada , Masaki Itou
发明人： Shuichi Ohkubo , Mitsuya Okada , Masaki Itou
IPC分类号： G11B7/0045 , G11B7/005 , G11B7/0055 , G11B7/24 , G11B7/243 , G11B7/253 , G11B7/2534 , G11B7/2542 , G11B7/258 , G11B7/2585 , G11B7/2595 , G11B7/00
CPC分类号： G11B7/258 , G11B7/0045 , G11B7/00454 , G11B7/005 , G11B7/00557 , G11B7/24 , G11B7/243 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/2595 , Y10S430/146
摘要： The optical disk writing system disclosed is one in which data written on an optical data writing medium is verified essentially simultaneously with writing on the medium. The written data is verified by detecting a timing of the light irradiated on the medium and by measuring return light doses at rise and fall of the light irradiated on the medium and comparing the doses thereof with predetermined reference values. The medium uses a phase transition reversible between a crystal state and an amorphous state for writing/reading/erasing of data on a data writing film, and includes a first protective film, a phase transition type data writing film, a second protective film, and a reflection film, formed in this order, on a transparent substrate. The thickness of the first protective film is set such that, of three reflectivities of the data writing film respectively in crystal, amorphous and melted states, the reflectivity in the crystal state and the reflectivity in the melted state are made different from each other, and the reflectivity in the amorphous state and the reflectivity in the melted state are made different from each other. A high speed writing operation can be carried out and an overwrite operation can be completed in one disk rotation time.
摘要翻译：所公开的光盘写入系统是写入光学数据写入介质的数据基本上与介质上的写入同时被验证的。通过检测照射在介质上的光的定时并通过测量照射在介质上的光的上升和下降的返回光剂量并将其与预定的参考值进行比较来验证写入的数据。所述介质使用在晶体状态和非晶状态之间可逆的相转变用于在数据写入膜上写入/读取/擦除数据，并且包括第一保护膜，相变型数据写入膜，第二保护膜和反射膜，依次形成在透明基板上。第一保护膜的厚度被设定为使得数据写入膜的三个反射率分别处于晶体，非晶态和熔融状态，晶体状态的反射率和熔融状态下的反射率彼此不同，使非晶态的反射率和熔融状态下的反射率彼此不同。可以执行高速写入操作，并且可以在一个盘旋转时间内完成重写操作。

7. 发明授权

US5878022A High density optical information recording medium using high refractive index layer 失效
$High density optical information recording medium using high refractive index layer$
标题翻译：使用高折射率层的高密度光学信息记录介质
公开(公告)号：US5878022A
公开(公告)日：1999-03-02
申请号：US929790
申请日：1997-09-15
申请人： Mitsuya Okada , Masatsugu Ogawa
发明人： Mitsuya Okada , Masatsugu Ogawa
IPC分类号： G11B7/007 , G11B7/013 , G11B7/09 , G11B7/24 , G11B7/243 , G11B7/257 , G11B7/258 , G11B11/10 , G11B11/105
CPC分类号： G11B7/24085 , G11B11/10578 , G11B11/10584 , G11B7/0938 , G11B7/24 , G11B7/24079 , G11B7/243 , G11B7/246 , G11B7/257 , G11B2007/24306 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716 , G11B7/258
摘要： Disclosed are an optical information recording medium for recording, reproducing and erasing information by emitting laser light with a wavelength in vacuum of .lambda., which has: a transparent substrate through which the laser light can be transmitted; a high refractive-index layer which is formed on the transparent substrate; a guide groove for tracking which is formed on the high refractive-index layer; and a recording layer which is formed on the guide groove for tracking; wherein a width W of the guide groove for tracking and a refractive index n.sub.a of the high refractive-index layer are so set that the following relation: W>.lambda./(2xn.sub.a) is obtained, and an optical information recording medium for reproducing information by emitting laser light with a wavelength in vacuum of .lambda., which has: a transparent substrate through which the laser light can be transmitted; a high refractive-index layer which is formed on the transparent substrate; a concave-convex pit which is formed on the high refractive-index layer; and a reflection layer which is formed on the concave-convex pit; wherein a width W.sub.p of the concave-convex pit and a refractive index n.sub.a of the high refractive-index layer are so set that the following relation: W.sub.p >.lambda./(2xn.sub.a) is obtained.
摘要翻译：公开了一种用于通过发射具有λ的真空中的波长的激光来记录，再现和擦除信息的光学信息记录介质，其具有：可透射激光的透明基板; 形成在透明基板上的高折射率层; 用于跟踪的导槽，其形成在高折射率层上; 以及形成在引导槽上用于跟踪的记录层; 其中用于跟踪的导向槽的宽度W和高折射率层的折射率na被设置为获得以下关系：W>λ/（2xna），以及用于通过以下关系再现信息的光学信息记录介质发射具有λ的真空中的波长的激光，其具有：可透射激光的透明基板; 形成在透明基板上的高折射率层; 形成在高折射率层上的凹凸坑; 以及形成在凹凸坑上的反射层; 其中凹凸坑的宽度Wp和高折射率层的折射率na被设定为获得以下关系：Wp>λ/（2xna）。

8. 发明授权

US4862437A Magneto-optical recording reproducing, and erasing apparatus having two independent magnetic field applying devices 失效
标题翻译：具有两个独立的磁场施加装置的磁光记录再现和擦除装置
公开(公告)号：US4862437A
公开(公告)日：1989-08-29
申请号：US165353
申请日：1988-02-29
申请人： Mitsuya Okada
发明人： Mitsuya Okada
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105
CPC分类号： G11B11/10532
摘要： An apparatus for recording, reproducing and erasing data or information on a magneto-optical recording medium, for applying a steady magnetic field to the recording medium and for applying a variable magnetic field, a portion of the apparatus for applying the magnetic field being integrated into a recording head and and the record head being disposed on different sides of the recording medium, this results in the miniaturization of the means for applying the magnetic field to the recording medium and the apparatus presents an excellent recording/erasure property.
摘要翻译：一种用于在磁光记录介质上记录，再现和擦除数据或信息的装置，用于向记录介质施加稳定的磁场并施加可变磁场，用于施加磁场的装置的一部分被集成到记录头和记录头设置在记录介质的不同侧上，这导致用于将磁场施加到记录介质的装置的小型化，并且该装置具有优良的记录/擦除性能。

9. 发明授权

US07489620B2 Optical information recording and reproducing medium 失效
标题翻译：光信息记录和再现介质
公开(公告)号：US07489620B2
公开(公告)日：2009-02-10
申请号：US10525079
申请日：2003-08-21
申请人： Mitsuya Okada , Toshiaki Iwanaga , Takeharu Shibatoko , Hideki Tanabe , Masashi Kubota , Masaki Nakano , Satoshi Sugaya
发明人： Mitsuya Okada , Toshiaki Iwanaga , Takeharu Shibatoko , Hideki Tanabe , Masashi Kubota , Masaki Nakano , Satoshi Sugaya
IPC分类号： G11B7/24
CPC分类号： G11B7/24038 , G11B7/00456 , G11B7/0062 , G11B7/00736 , G11B2007/0013
摘要： Optical information recording and reproducing medium 10 has two recording layers of first and second recording layers 12 and 14, from a laser beam incident surface side. In each control area 21, recording layer management information containing at least information indicating recording states of a plurality of areas into which the inside of data recording area 22 of each recording layer is divided is recorded. When recording or reproducing is performed on the second recording layer 14, the recording layer management information is checked, and a laser beam output is changed based on a recording state of an area corresponding to the first recording layer 12.
摘要翻译：光信息记录和再现介质10具有来自激光入射表面侧的第一和第二记录层12和14的两个记录层。在每个控制区域21中，记录至少包含指示每个记录层的数据记录区域22的内部划分成多个区域的记录状态的信息的记录层管理信息。当在第二记录层14上执行记录或再现时，检查记录层管理信息，并且基于与第一记录层12相对应的区域的记录状态来改变激光束输出。

10. 发明授权

US6122243A Optical information recording apparatus, optical recording medium, and method or judging tracking polarity of optical recording medium 失效
标题翻译：光信息记录装置，光记录介质，光记录介质的方法或判断跟踪极性
公开(公告)号：US6122243A
公开(公告)日：2000-09-19
申请号：US30805
申请日：1998-02-26
申请人： Mitsuya Okada
发明人： Mitsuya Okada
IPC分类号： G11B7/00 , G11B7/005 , G11B7/007 , G11B7/09 , G11B7/13 , G11B11/105
CPC分类号： G11B11/10595 , G11B11/10582 , G11B7/0053 , G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/131 , G11B11/10515
摘要： A tracking groove comprising a land area and a groove area is previously provided on a substrate of an optical disk, and a prepit is previously provided on a boundary line between the land area and the groove area of the tracking groove. When information is recorded on both the land and groove areas, a half-split photodetector split into two parts by a splitting line perpendicular to the radial direction of the optical disk is used as a photoreceiver for receiving light reflected from the optical disk. The photoreceivers are switched so that light reflected from the prepit is reproduced as a signal in any one of the two photodetectors. This enables reproduction signals derived from light reflected from the prepit to be reproduced at a good S/N ratio, thus realizing an optical information recording apparatus which bas a simple construction and enables information to be recorded on both the land and groove areas.
摘要翻译：预先在光盘的基板上设置包括平台区域和凹槽区域的跟踪凹槽，并且预先在凹槽区域和跟踪凹槽的凹槽区域之间的边界线上设置预凹坑。当信息被记录在陆地和凹槽区域上时，使用通过垂直于光盘的径向方向的分割线分成两部分的半分裂光电检测器作为用于接收从光盘反射的光的光接收器。切换光接收器，使得从预凹坑反射的光作为两个光电检测器中的任一个中的信号被再现。这使得从预制凹坑反射的光得到的再现信号以良好的S / N比再现，从而实现了一种基于简单结构的光信息记录装置，并使信息能够记录在陆地和凹槽两个区域上。

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