专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5016232A Magneto-optic information-carrying medium including three magnetic layers 失效
标题翻译：包括三个磁性层的磁光信息载体
公开(公告)号：US5016232A
公开(公告)日：1991-05-14
申请号：US490324
申请日：1990-03-08
申请人： Michihiro Tadokoro , Kazuo Okada , Hitoshi Imai
发明人： Michihiro Tadokoro , Kazuo Okada , Hitoshi Imai
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10586 , G11B11/10506 , G11B11/10521 , Y10S428/90
摘要： A magneto-optic information-carrying medium comprises three magnetic layers. A magnetic bias field is generated by a third layer which is premagnetized in the direction parallel to the thickness thereof.

2. 发明授权

US4881204A Optical reading or writing apparatus 失效
标题翻译：光学读写装置
公开(公告)号：US4881204A
公开(公告)日：1989-11-14
申请号：US185052
申请日：1988-04-22
申请人： Michihiro Tadokoro , Hitoshi Imai , Kazuo Okada
发明人： Michihiro Tadokoro , Hitoshi Imai , Kazuo Okada
IPC分类号： G11B7/0037 , G11B7/095 , G11B17/34 , G11B23/50
CPC分类号： G11B23/507 , G11B17/34 , G11B7/0037 , G11B7/0956
摘要： An information-carrying medium having the form of a disc is rotated around a central axis. The temperature of the disc is controlled by a temperature-adjusting element facing the surface of the disc.

3. 发明授权

US4868807A Wavelength selective optical data storage system 失效
公开(公告)号：US4868807A
公开(公告)日：1989-09-19
申请号：US182118
申请日：1988-04-15
申请人： Kazuo Okada , Michihiro Tadokoro , Hitoshi Imai
发明人： Kazuo Okada , Michihiro Tadokoro , Hitoshi Imai
IPC分类号： B41M5/26 , G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B27/36
CPC分类号： G11B7/00745 , G11B27/36 , G11B7/00453
摘要： A recording medium for wavelength selective optical data storage has at least one memory element on which information is recorded by creating recording holes on the absorption spectrum thereof. The spectrum has at least one prerecorded hole for identifying the wavelength positions of the recording holes.

4. 发明授权

US4862442A Focus detecting apparatus utilizing reflecting surface having variable reflectivity or transmissivity 失效
标题翻译：利用具有可变反射率或透射率的反射面的聚焦检测装置
公开(公告)号：US4862442A
公开(公告)日：1989-08-29
申请号：US182248
申请日：1988-04-15
申请人： Michihiro Tadokoro , Kazuo Okada , Hitoshi Imai
发明人： Michihiro Tadokoro , Kazuo Okada , Hitoshi Imai
IPC分类号： G02B7/28 , G11B7/09
CPC分类号： G11B7/0917 , G11B7/0908 , G11B2007/0919
摘要： A light beam emitted from a source is focused on an object. The beam reflected by the object passes through an optical member and is detected by a photodetector. The optical member has a reflecting surface the reflectivity of which varies continuously with respect to the angle of incidence.

5. 发明授权

US5051975A Optical recording and/or reproducing apparatus having a temperature adjusting device 失效
标题翻译：具有温度调节装置的光记录和/或再现装置
公开(公告)号：US5051975A
公开(公告)日：1991-09-24
申请号：US305931
申请日：1989-02-02
申请人： Michihiro Tadokoro , Hitoshi Imai , Kazuo Okada
发明人： Michihiro Tadokoro , Hitoshi Imai , Kazuo Okada
IPC分类号： G11B7/095 , G11B17/32
CPC分类号： G11B7/0956 , G11B17/32
摘要： The present invention relates to an optical recording and/or reproducing apparatus which optically carries out operations of recording and/or reproducing of information on a data carrier, by irradiating a beam from an optical head to the data carrier. In the apparatus according to the present invention, the angle between the optical axis of the beam from the optical head and the surface of said data carrier is detected, and a temperature adjusting device brings about a difference in temperature between both surfaces of the data carrier on the basis of the detected result in respect to the angle. Then, the difference in temperature generates a thermal strain, and this thermal strain functions to cancel the strain which the data carrier has previously had. As a result, the surface of the data carrier is kept on a level, so that this surface can be vertical to the optical axis of the beam from the optical head. Therefore, in the optical recording and/or reproducing apparatus, easily maintained is the right angles between the surface of the data carrier and the optical axis of the beam, and the mechanism for focalizing the beam can be simplified to miniaturize the optical head. Furthermore, no mechanism for making the optical head oscillate is required, as a result, a high-speed accessibility is obtained.
摘要翻译：光学记录和/或再现装置技术领域本发明涉及一种光学记录和/或再现装置，其通过将来自光学头的光束照射到数据载体来光学地执行数据载体上的信息的记录和/或再现操作。在根据本发明的装置中，检测来自光学头的光束的光轴与所述数据载体的表面之间的角度，温度调节装置在数据载体的两个表面之间产生温度差基于相对于角度的检测结果。然后，温度差产生热应变，该热应变起到抵消数据载体先前存在的应变的作用。结果，数据载体的表面保持在一个水平上，使得该表面可以垂直于光学头的光束的光轴。因此，在光学记录和/或再现装置中，容易保持数据载体的表面与光束的光轴之间的直角，并且可以简化用于聚焦光束的机构，以使光学头小型化。此外，不需要使光头振荡的机构，结果获得高速可及性。

6. 发明授权

US4876666A Wavelength selective optical data storage system 失效
标题翻译：波长选择光学数据存储系统
公开(公告)号：US4876666A
公开(公告)日：1989-10-24
申请号：US140210
申请日：1987-12-31
申请人： Hitoshi Imai , Kazuo Okada , Michihiro Tadokoro
发明人： Hitoshi Imai , Kazuo Okada , Michihiro Tadokoro
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045
CPC分类号： G11B7/00453
摘要： Information is recorded by creating recording hole at a predetermined wavelength position on a memory element with a characteristic of wavelength selective optical data storage. Because the memory element is pit-like, it causes diffraction of a light beam transmitted through or reflected by it. The diffracted beams are detected for positioning a beam spot right on the selected memory element.

7. 发明授权

US4841507A Optical head for an optical recording and reproducing apparatus 失效
标题翻译：用于光学记录和再现装置的光学头
公开(公告)号：US4841507A
公开(公告)日：1989-06-20
申请号：US127049
申请日：1987-12-01
申请人： Hitoshi Imai , Ryuichiro Arai , Kimiyuki Koyanagi , Michihiro Tadokoro
发明人： Hitoshi Imai , Ryuichiro Arai , Kimiyuki Koyanagi , Michihiro Tadokoro
IPC分类号： G02B7/28 , G11B7/09 , G11B7/12
CPC分类号： G11B7/0909
摘要： An optical head for optical recording and reproducing system comprising a light source, a first optical means for introducing a light beam from the light source into a guide groove formed in a recording surface of an information carrier, and a second optical means for separating a reflected light beam reflected from the guide groove from the light beam from the light source. The optical head also comprises an optical element having formed thereon at its center a cylindrical surface and on both sides slanted surfaces for dividing the reflected light beam into three, and a light receiving element having at least three light receiving units for receiving the respective light beams divided into three by the optical element.
摘要翻译：一种用于光学记录和再现系统的光学头，包括光源，用于将来自光源的光束引入形成在信息载体的记录表面中的引导槽中的第一光学装置和用于分离反射的来自光源的光束从导向槽反射的光束。光学头还包括一个光学元件，它在其中心形成有圆柱形表面，并在两侧上形成用于将反射光束分成三个的倾斜表面;以及光接收元件，具有至少三个光接收单元，用于接收各个光束由光学元件分为三个。

8. 发明授权

US5313441A Optical recording and reproducing apparatus having a pickup head including a main prism with reflecting surfaces for splitting the reflected beam 失效
标题翻译：具有拾取头的光学记录和再现装置包括具有用于分离反射光束的反射表面的主棱镜
公开(公告)号：US5313441A
公开(公告)日：1994-05-17
申请号：US499640
申请日：1990-03-27
申请人： Hitoshi Imai , Michihiro Tadokoro
发明人： Hitoshi Imai , Michihiro Tadokoro
IPC分类号： G11B7/09 , G11B7/135 , G11B7/12
CPC分类号： G11B7/1356 , G11B7/094 , G11B7/0901 , G11B7/0916
摘要： An optical recording and reproducing apparatus for optically recording and reproducing information on and from a disk includes a light source for generating a parallel beam. A movable optical system condenses the parallel beam from the light source on the disk, splits the beam into two different beams, and moves in the radial direction of the disk. A split-beam detecting device has two light receiving surfaces which receive part of the two different beams obtained in the movable optical system. A and a control device effects tracking control by moving the movable optical system in the radial direction of the disk in accordance with respective detection signals output from the two light receiving surfaces.
摘要翻译：用于在盘上光学记录和再现信息的光学记录和再现装置包括用于产生平行光束的光源。可移动光学系统将来自光源的平行光束会聚在光盘上，将光束分成两束，并沿光盘的径向方向移动。分束检测装置具有接收在可移动光学系统中获得的两个不同光束的一部分的两个光接收表面。 A和控制装置通过根据从两个光接收表面输出的相应检测信号沿盘的径向移动可移动光学系统来实现跟踪控制。

9. 发明授权

US4908809A Information-carrying medium equipment for magneto-optic reading and writing 失效
标题翻译：用于磁光读写的信息载体介质设备
公开(公告)号：US4908809A
公开(公告)日：1990-03-13
申请号：US196556
申请日：1988-05-20
申请人： Michihiro Tadokoro , Kazuo Okada
发明人： Michihiro Tadokoro , Kazuo Okada
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10526 , G11B11/10506 , G11B11/10517
摘要： An information-carrying medium with first, second and third ferromagnetic layers is enclosed in a housing, in which an initializing magnet is disposed. The second layer of the information-carrying medium is magnetized by the initializing magnet premagnetized in a uniform direction and is used as a bias layer.

10. 发明授权

US5107409A Optical head for optical information recording/reproducing apparatus 失效
标题翻译：用于光信息记录/再现设备的光头
公开(公告)号：US5107409A
公开(公告)日：1992-04-21
申请号：US480016
申请日：1990-02-13
申请人： Michihiro Tadokoro , Kazuo Okada
发明人： Michihiro Tadokoro , Kazuo Okada
IPC分类号： G11B7/08 , G11B7/12 , G11B7/135
CPC分类号： G11B7/12
摘要： An optical head for use in an optical information recording/reproducing apparatus includes an optical system comprising a plurality of optical elements including a light-emitting element, and a casing which securely mounts at least part of the optical elements. The casing is provided with a vibration damping material which is effective to damp vibrations of the casing.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式