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1. 发明授权

US5380573A Optical recording medium 失效
标题翻译：光记录介质
公开(公告)号：US5380573A
公开(公告)日：1995-01-10
申请号：US930702
申请日：1992-10-06
申请人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ohta , Masumi Ono , Kouichi Yasuda
发明人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ohta , Masumi Ono , Kouichi Yasuda
IPC分类号： G11B7/005 , G11B11/105 , B32B3/00
CPC分类号： G11B7/005 , G11B11/105 , G11B11/10528 , G11B11/10584 , Y10S428/913 , Y10T428/31678
摘要： An optical recording medium has a multi-layer film including a reproducing layer and a recording holding layer, in which, while a readout light is radiated to the optical recording medium for transcribing signals magnetically recorded in the recording holding layer to the reproducing layer, the signals are converted by photomagnetic effects into optical signals which are read. Alternately, an optical recording medium has phase pits formed thereon in accordance with signals and changed in reflectance with temperature, in which, while a readout light beam is radiated to the optical recording medium and the reflectance is changed partially within a scanning spot the readout light beam, the phase pits are read. The track pitch p of pits RP of recording signals in a direction at right angles to the scanning direction of the laser light is set to not more than one-half the spot diameter of the laser light to raise the track density to improve the recording capacity of the recording medium.
摘要翻译： PCT No.PCT / JP91 / 01436 Sec。 371日期：1992年10月6日 102（e）日期1992年10月6日PCT 1991年10月18日PCT PCT。公开号WO92 / 15092 日期：1992年9月3日。光记录介质具有包括再现层和记录保持层的多层膜，其中，当将读出光照射到用于转录磁记录在记录保持中的信号的光记录介质层到再现层，信号被光磁效应转换成被读取的光信号。或者，光记录介质根据信号形成在其上的相位凹坑，并随着温度反射而变化，其中当将读出光束照射到光记录介质上并且反射率在扫描点内部分地改变时，读出光光束，读取相位坑。与激光的扫描方向成直角的记录信号的凹坑RP的轨道间距p被设定为不大于激光的光点直径的一半，以提高轨道密度以提高记录容量的记录介质。

2. 发明授权

US5353277A Optical disk having intertrack heat conduction suppression 失效
标题翻译：具有互调导热抑制的光盘
公开(公告)号：US5353277A
公开(公告)日：1994-10-04
申请号：US958007
申请日：1992-10-08
申请人： Kouichi Yasuda , Atsushi Fukumoto , Masumi Ono
发明人： Kouichi Yasuda , Atsushi Fukumoto , Masumi Ono
IPC分类号： G11B7/007 , G11B7/24
CPC分类号： G11B7/24 , G11B7/00718
摘要： To increase the track density, that is, to improve the recording density of the optical disk of ultra-high resolving power reproduction type, grooves 4 are formed in a transparent substrate 2; phase pits 1 are formed on groove bottom portions 5 and land portions 6 of the grooves; and further a material layer 3 is laminated. A polycarbonate substrate is used as the transparent substrate 2. The material layer 3 is formed of such a material that the state is partially changed due to heat of the reading light in the optical spot of the reading light but returned to the original state after the reading light has passed, and in addition the reflection factor of the material is changeable according to the state change. The material layer 3 is a ternary compound of Ge.sub.2 Sb.sub.2 Te.sub.3. The thermal conductivity of the transparent substrate 2 is smaller than that of the material layer 3. The temperature of the material layer 3 rises in the laser spot according to the light intensity distribution of the laser, so that the reflection factor changes partially to enable data read operation. The heat conduction suppression due to the presence of the stepped portions of the grooves 4 sharpens the temperature gradient, so that the range in which the reflection factor is increased due to the state change of the material layer 3 can be reduced, thus decreasing the track interval distance and thereby increasing the track density.
摘要翻译：为了增加轨道密度，即，为了提高超高分辨率再现型光盘的记录密度，在透明基板2中形成槽4; 相位凹坑1形成在凹槽底部5和凹槽部分6上; 并且进一步层压材料层3。使用聚碳酸酯基材作为透明基板2.材料层3由这样的材料形成，即由于读取光的光点中的读取光的热量而使状态部分地变化，但是在第阅读光已经过去了，而且材料的反射因子根据状态的变化是可以改变的。材料层3是Ge 2 Sb 2 Te 3的三元化合物。透明基板2的热导率小于材料层3的导热率。根据激光的光强度分布，材料层3的温度在激光点上升，使得反射系数部分变化，使数据读操作。由于凹槽4的阶梯部分的存在导致的热传导抑制使得温度梯度变亮，从而可以减少由于材料层3的状态变化导致的反射系数增加的范围，从而减小轨迹间隔距离，从而增加轨道密度。

3. 发明授权

US5304440A Optical disk 失效
标题翻译：光盘
公开(公告)号：US5304440A
公开(公告)日：1994-04-19
申请号：US951844
申请日：1992-09-28
申请人： Masumi Ono , Atsushi Fukumoto , Kouichi Yasuda
发明人： Masumi Ono , Atsushi Fukumoto , Kouichi Yasuda
IPC分类号： B41M5/26 , G11B7/005 , G11B7/24 , G11B7/243
CPC分类号： G11B7/0052 , G11B7/24 , G11B7/00454 , Y10S430/146 , Y10S430/165
摘要： An optical disk having a greatly improved recording density. The disk has a transparent substrate provided with phase pits. A layer of a phase changeable material is formed on the substrate. This phase changeable material is a chalcogen or chalcogenide such as Sb.sub.2 Se.sub.3 or Sb.sub.2 Te.sub.3. When reading light is directed onto the disk, a part of the layer of the phase changeable material is melted within the spot of the reading light beam, and the reflectivity changes and a phase pit is read through the melted part. After the reading, the melted portion recrystallizes.
摘要翻译：具有极大改善的记录密度的光盘。盘具有设置有相位凹坑的透明基板。在基板上形成有相变材料层。该相变材料是硫族元素或硫族化物，如Sb2Se3或Sb2Te3。当读取光被引导到盘上时，相变材料层的一部分在读取光束的光点内熔化，并且反射率改变，并且通过熔化部分读取相位凹坑。阅读后，熔融部分重结晶。

4. 发明授权

US5450387A Optical pickup apparatus for phase changing optical disk 失效
标题翻译：用于相变光盘的光学拾取装置
公开(公告)号：US5450387A
公开(公告)日：1995-09-12
申请号：US957600
申请日：1992-10-06
申请人： Masumi Ono , Atsushi Fukumoto , Kouichi Yasuda
发明人： Masumi Ono , Atsushi Fukumoto , Kouichi Yasuda
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/095 , G11B7/135 , G11B11/105
CPC分类号： G11B11/10576 , G11B7/00454 , G11B7/0052 , G11B7/0903
摘要： An optical disk reproducing apparatus for optical disks which are have a material layer whose reflectivity is lowered when a temperature of this material exceeds a predetermined temperature, is fabricated on a transparent substrate. A plurality of phase pits have been formed in this substrate corresponding to an information signal. The optical disk reproducing apparatus comprises: an optical pickup for reading the information signal by irradiating on a recording plane of the optical disk, a first optical spot for reproducing the information signal, and also second and third optical spots each having lower light intensity than that of the first optical spot. The second and third optical spots located at positions where there is no adverse influence caused by a thermal history of the first optical spot. The optical disk reproducing apparatus further comprises tracking control unit for performing a tracking control of the optical pickup based upon a difference signal between detection signals derived from first and second photo detecting units of the optical pickup, for receiving light of the second and third optical spots reflected from the optical disk.
摘要翻译：一种用于光盘的光盘再现装置，在该材料的温度超过预定温度时，具有反射率降低的材料层。在该基板上形成了与信息信号对应的多个相位凹坑。光盘重放装置包括：光拾取器，用于通过照射在光盘的记录平面上的信息信号，用于再现信息信号的第一光点，以及具有比光强低的光强度的第二和第三光点。的第一个光点。位于第一光点的热历史没有不利影响的位置处的第二和第三光点。光盘重放装置还包括跟踪控制单元，用于基于从光学拾取器的第一和第二光电检测单元得到的检测信号之间的差异信号执行光学拾取器的跟踪控制，用于接收第二和第三光点的光从光盘反射。

5. 发明授权

US5432774A Optical recording medium 失效
标题翻译：光记录介质
公开(公告)号：US5432774A
公开(公告)日：1995-07-11
申请号：US930701
申请日：1992-10-06
申请人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
发明人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
IPC分类号： G11B7/005 , G11B11/105 , G11B7/09
CPC分类号： G11B7/005 , G11B11/10504 , G11B11/10515 , G11B11/10528 , G11B11/10586
摘要： An optical recording medium has a multi-layer film including a reproducing layer and a recording holding layer magnetically coupled to each other as a recording film. While a readout light is radiated to the optical recording medium for erasing the recording holding layer and the reproducing layer or transcribing signals magnetically recorded in the recording holding layer to the reproducing layer, the signals are converted by photomagnetic effects into optical signals which are read, or an optical recording medium having phase pits changed in reflectance with temperature. While a readout light beam is radiated to the optical recording medium and the reflectance is changed partially within a scanning spot of the readout light beam, the phase pits are read. The minimum pit interval of the recording signals along the scanning direction of the readout light beam is selected to be not more than .lambda./2NA, where .lambda. is the wavelength of the readout light beam, and NA is the numerical aperture of an objective lens for raising the recording line density and the recording capacity of the recording medium.
摘要翻译： PCT No.PCT / JP91 / 01435 Sec。 371日期：1992年10月6日 102（e）日期1992年10月6日PCT 1991年10月18日PCT PCT。出版物WO92 / 15091 日期：1992年9月3日。光记录介质具有包括作为记录膜彼此磁耦合的再现层和记录保持层的多层膜。当读出光被照射到用于擦除记录保持层和再现层的光学记录介质或将磁记录在记录保持层中的信号转录到再现层时，信号通过光磁效应被转换成被读取的光信号，或具有随温度变化的相位凹坑的光记录介质。当读出光束被照射到光学记录介质并且反射率在读出光束的扫描点内部分地改变时，读取相位凹坑。沿着读出光束的扫描方向的记录信号的最小凹坑间隔被选择为不大于λ/ 2NA，其中λ是读出光束的波长，NA是物镜的数值孔径，用于提高记录线密度和记录介质的记录容量。

6. 发明授权

US5390162A Method for reproducing signals recorded on optical recording medium 失效
标题翻译：用于再现记录在光学记录介质上的信号的方法
公开(公告)号：US5390162A
公开(公告)日：1995-02-14
申请号：US941058
申请日：1992-09-30
申请人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
发明人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
IPC分类号： G11B7/005 , G11B11/105 , G11B19/02 , G11B11/10 , G11B11/03
CPC分类号： G11B7/005 , G11B11/10515 , G11B11/10595 , G11B19/02
摘要： A method for reproducing a magneto-optical recording medium the recording pits of which are erased or relieved with rise in temperature of the recording medium caused by radiation of a readout light beam or an optical recording medium the reflectance of which is changed with rise in temperature of the recording medium caused by radiation of the readout light beam, in which changes in the size of an effective reproducing region due to the temperature of the recording medium may be inhibited. To this end, when the magneto-optical disc 11, for example, is rotated at a constant angular velocity, a detecting unit 17 is provided for detecting the radial position of the magneto-optical disc 11 and the laser power as well as the external magnetic field is controlled depending on an output of the detecting unit 17 for controlling the size of an effective reproducing region to be constant without regard to the linear velocity at each reproducing position.
摘要翻译： PCT No.PCT / JP91 / 01438 Sec。 371日期：1992年9月30日 102（e）日期1992年9月30日PCT 1991年10月19日PCT公布。出版物WO92 / 14245 日期：1992年8月20日。一种用于再现磁光记录介质的方法，所述磁光记录介质由于读出光束或光记录介质的辐射而被记录介质的温度升高而被擦除或释放，其随着读取光束的辐射而导致的记录介质的温度升高而改变，其中由于记录介质的温度导致的有效再现区域的尺寸的变化可能被抑制。为此，例如当磁光盘11以恒定的角速度旋转时，提供检测单元17用于检测磁光盘11的径向位置和激光功率以及外部根据检测单元17的输出控制磁场，用于将有效再现区域的大小控制为恒定，而不考虑每个再现位置处的线速度。

7. 发明授权

US5335213A Positional detection of a magneto-optic recording medium for controlling irradiation of a relief region 失效
标题翻译：用于控制浮雕区域照射的磁光记录介质的位置检测
公开(公告)号：US5335213A
公开(公告)日：1994-08-02
申请号：US937876
申请日：1992-09-30
申请人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
发明人： Atsushi Fukumoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
IPC分类号： G11B7/005 , G11B11/105 , G11B11/00 , G11B11/10
CPC分类号： G11B11/10595 , G11B11/10515 , G11B7/005
摘要： A method for reproducing a magneto-optical recording medium the recording pits of which are erased or relieved with rise in temperature of the recording medium caused by radiation of a readout beam, or an optical recording medium the reflectance of which is changed with rise in temperature of the recording medium caused by radiation of the readout beam, in which, when the line recording density of the recording medium is changed, the size of the effective reproducing region is controlled to an optimum value conforming to the line recording density to assure a stable reproducing state. To this end, with the magneto-optical disc 11 for example, being rotated at a constant angular velocity, a detecting unit 17 is provided for detecting the radial position of the magneto-optical disc 11 and the laser power as well as the external magnetic field is controlled depending on an output of the detecting unit 17 for controlling the size of an effective reproducing region to an optimum value conforming to the line recording density at each reproducing position.
摘要翻译： PCT No.PCT / JP91 / 01439 Sec。 371日期：1992年9月30日 102（e）日期1992年9月30日PCT 1991年10月19日PCT公布。公开号WO92 / 15093 日期：1992年9月3日。一种用于再现磁光记录介质的方法，所述磁光记录介质的记录凹坑由于读出光束的辐射而导致的记录介质的温度升高或释放，或光记录介质的反射率其随着读出光束的辐射而由记录介质的温度升高而改变，其中当记录介质的行记录密度改变时，有效再现区域的大小被控制为符合线路记录密度以确保稳定的再现状态。为此，例如利用磁光盘11以恒定的角速度旋转，提供检测单元17用于检测磁光盘11的径向位置和激光功率以及外部磁性根据检测单元17的输出控制有效再现区域的大小，使其达到在每个再现位置处符合行记录密度的最佳值。

8. 发明授权

US5329512A Temperature detection of a magneto-optic recording medium for controlling irradiation of an erasure region 失效
标题翻译：用于控制擦除区域的照射的磁光记录介质的温度检测
公开(公告)号：US5329512A
公开(公告)日：1994-07-12
申请号：US930617
申请日：1992-09-30
申请人： Atsushi Fukimoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
发明人： Atsushi Fukimoto , Toshiki Udagawa , Shunji Yoshimura , Masumi Ono , Kouichi Yasuda
IPC分类号： G11B7/004 , G11B7/005 , G11B7/125 , G11B11/105 , G11B19/02 , G11B19/04 , G11B33/14 , G11B11/10 , G11B7/00
CPC分类号： G11B19/046 , G11B11/10515 , G11B11/10595 , G11B19/02 , G11B19/04 , G11B33/144 , G11B7/004 , G11B7/005 , G11B7/126
摘要： A method for reproducing a magneto-optical recording medium the recording pits of which are erased or relieved with rise in temperature of the recording medium caused by radiation of a readout beam, or an optical recording medium the reflectance of which is changed with rise in temperature of the recording medium caused by radiation of the readout beam, in which changes in the size of an effective reproducing region due to the temperature of the magneto-optical or optical recording medium may be inhibited. To this end, a temperature sensor 20 for sensing the temperature of the magneto-optical disc 11, for example, is provided and the laser power or the external magnetic field is controlled depending on the detected temperature by the temperature sensor 20 to maintain a constant size of the effective reproducing region at all times.
摘要翻译： PCT No.PCT / JP91 / 01437 Sec。 371日期：1992年9月30日 102（e）日期1992年9月30日PCT 1991年10月19日PCT公布。出版物WO92 / 14244 日期：1992年8月20日。一种用于再现磁光记录介质的方法，所述磁光记录介质的记录凹坑由于读出光束的辐射或光记录介质而由记录介质的温度升高而被擦除或释放，其随着读出光束的辐射而导致的记录介质的温度升高而变化，其中可能抑制由于磁光或光记录介质的温度导致的有效再现区域的尺寸的变化。为此，提供了用于感测磁光盘11的温度的温度传感器20，并且根据温度传感器20的检测温度来控制激光功率或外部磁场，以保持恒定总是有效再现区域的大小。

9. 发明申请

US20130007781A1 MULTILAYER OPTICAL RECORDING MEDIUM 失效
标题翻译：多层光学记录介质
公开(公告)号：US20130007781A1
公开(公告)日：2013-01-03
申请号：US13583883
申请日：2011-03-11
申请人： Tetsuhiro Sakamoto , Hirotaka Miyamoto , Jun Nakano , Kouichi Yasuda
发明人： Tetsuhiro Sakamoto , Hirotaka Miyamoto , Jun Nakano , Kouichi Yasuda
IPC分类号： G11B7/24
CPC分类号： G11B7/24038
摘要： An optical recording medium is provided. The optical recording medium includes a multilayer including an N (N≦5) number of interfaces capable of reflecting incident light.
摘要翻译：提供光记录介质。光记录介质包括具有能够反射入射光的N（N＆nlE; 5）数个接口的多层。

10. 发明申请

US20090073845A1 OPTICAL RECORDING MEDIUM 审中-公开
标题翻译：光学记录介质
公开(公告)号：US20090073845A1
公开(公告)日：2009-03-19
申请号：US12265241
申请日：2008-11-05
申请人： Kouichi Yasuda , Mitsuaki Oyamada , Jun Nakano , Norio Mitsui , Sakuya Tamada
发明人： Kouichi Yasuda , Mitsuaki Oyamada , Jun Nakano , Norio Mitsui , Sakuya Tamada
IPC分类号： G11B7/00
CPC分类号： G11B7/257 , G11B7/243 , G11B2007/24312 , G11B2007/2432 , G11B2007/24322 , G11B2007/2571
摘要： An optical recording medium using Sn as the recording material to improve the jitter is provided, in which on the surface of a disc substrate 11 where a concave and convex shape dividing a track area is formed, are formed on the surface of the concave and convex shape a first protective layer 31 for protecting at least an optical recording layer 31, an optical recording layer 12 using a chemical compound at least composed of tin (Sn), nitrogen (N) and oxygen (O), formed on the first protective layer, a second protective layer 32 for protecting this optical recording layer, formed on this optical recording layer, and a light-transmittable layer 13 formed on the second protective layer; with this structure, the optical recording layer 12 under high temperature and high humidity can be stabilized by means of the first and second protective layers 31 and 32.
摘要翻译：提供了一种使用Sn作为记录材料以改善抖动的光记录介质，其中在凹凸形状的表面上形成有划分轨道区域的凹凸形状的盘基板11的表面形成用于至少保护光学记录层31的第一保护层31，使用至少由锡（Sn），氮（N）和氧（O）组成的化合物形成在第一保护层上的光学记录层12 形成在该光记录层上的用于保护该光记录层的第二保护层32和形成在该第二保护层上的透光层13; 通过这种结构，可以通过第一和第二保护层31和32来稳定高温高湿的光记录层12。

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