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    Optical recording medium
    2.
    发明授权
    Optical recording medium 失效
    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。

    Temperature detection of a magneto-optic recording medium for controlling irradiation of an erasure region
    4.
    发明授权
    Temperature detection of a magneto-optic recording medium for controlling irradiation of an erasure region 失效
    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。

    OPTICAL RECORDING MEDIUM
    5.
    发明申请
    OPTICAL RECORDING MEDIUM 审中-公开
    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。

    Optical recording medium
    6.
    发明授权
    Optical recording medium 失效
    光记录介质

    公开(公告)号：US07464391B2

    公开(公告)日：2008-12-09

    申请号：US10547199

    申请日：2004-03-10

    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： G11B7/24 ,  B32B3/02

    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。

    Optical disk having intertrack heat conduction suppression
    7.
    发明授权
    Optical disk having intertrack heat conduction suppression 失效
    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。

    Optical disk
    8.
    发明授权
    Optical disk 失效
    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。