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91. 发明授权

US5418765A Apparatus for recording and reproducing optical information having an optical waveguide 失效
标题翻译：用于记录和再现具有光波导的光信息的装置
公开(公告)号：US5418765A
公开(公告)日：1995-05-23
申请号：US188944
申请日：1994-01-27
申请人： Shigeyoshi Misawa , Kiyoshi Yokomori , Masahiko Nakayama
发明人： Shigeyoshi Misawa , Kiyoshi Yokomori , Masahiko Nakayama
IPC分类号： G11B7/12 , G11B7/09
CPC分类号： G11B7/124
摘要： A focal point position detector has a light source for emitting light; an optical system for converging light from the light source to an optical recording medium; a coupler for coupling light from the optical recording medium thereto; a waveguide concave mirror for converging light from the coupler; a waveguide convex mirror for slightly reducing a converging degree of light from the waveguide concave mirror; and photodetectors for receiving light from the waveguide convex mirror, The coupler, the waveguide concave and convex mirrors and the photodetectors are integrally formed on a substrate, An apparatus for recording and reproducing optical information has a light source; an optical system for converging light emitted from the light source; an optical waveguide; a coupler for coupling the converged light to the optical waveguide; two waveguide mirrors arranged such that reflected light from the coupler is continuously reflected on the waveguide mirrors; and a photodetector for detecting the light reflected on the waveguide mirrors. The coupler, the optical waveguide, the waveguide mirrors and the photodetector are integrally formed on the same substrate.
摘要翻译：焦点位置检测器具有用于发光的光源; 用于将来自光源的光会聚到光学记录介质的光学系统; 用于将来自光学记录介质的光耦合到其的耦合器; 用于会聚来自耦合器的光的波导凹面镜; 用于稍微降低来自波导凹面镜的会聚光的波导凸面镜; 以及用于接收来自波导凸面镜的光的光电检测器，耦合器，波导凹凸镜和光电检测器一体地形成在基板上。用于记录和再现光信息的设备具有光源; 用于会聚从光源发出的光的光学系统; 光波导; 用于将会聚光耦合到光波导的耦合器; 两个波导反射镜布置成使得来自耦合器的反射光在波导反射镜上连续反射; 以及用于检测在波导反射镜上反射的光的光电检测器。耦合器，光波导，波导反射镜和光电检测器一体地形成在同一基板上。

92. 发明授权

US09705076B2 Magnetoresistive element and manufacturing method of the same 有权
公开(公告)号：US09705076B2
公开(公告)日：2017-07-11
申请号：US14478971
申请日：2014-09-05
申请人： Makoto Nagamine , Youngmin Eeh , Koji Ueda , Daisuke Watanabe , Kazuya Sawada , Toshihiko Nagase , Masahiko Nakayama
发明人： Makoto Nagamine , Youngmin Eeh , Koji Ueda , Daisuke Watanabe , Kazuya Sawada , Toshihiko Nagase , Masahiko Nakayama
IPC分类号： H01L43/10 , H01L43/08 , H01L27/22 , H01L43/12
CPC分类号： H01L43/10 , H01L27/228 , H01L43/08 , H01L43/12
摘要： According to one embodiment, there is provided a magnetoresistive element, including a lower electrode having crystallinity on a substrate, a first conductive layer including an amorphous state on the lower electrode, a buffer layer on the first conductive layer, and an MTJ element on the buffer layer.

93. 发明授权

US08553450B2 Magnetic random access memory and write method of the same 有权
标题翻译：磁性随机存取存储器和写入方法相同
公开(公告)号：US08553450B2
公开(公告)日：2013-10-08
申请号：US12510063
申请日：2009-07-27
申请人： Keiji Hosotani , Masahiko Nakayama
发明人： Keiji Hosotani , Masahiko Nakayama
IPC分类号： G11C11/00
CPC分类号： G11C11/1675 , G11C11/161
摘要： A first magnetic layer has a magnetization fixed along one direction. A first nonmagnetic layer on the first magnetic layer functions as a first tunnel barrier. A second magnetic layer on the first nonmagnetic layer has a magnetization whose direction can be reversed by spin transfer current injection. A second nonmagnetic layer on the second magnetic layer functions as a second tunnel barrier. A third magnetic layer on the second nonmagnetic layer has a magnetization whose direction can be reversed by spin transfer through current injection at a current density different from the second magnetic layer. First magnetic, first nonmagnetic layer, and second magnetic layers exhibit a first magnetoresistive effect. Second magnetic, second nonmagnetic, and third magnetic layers exhibit a second magnetoresistive effect. A magnetoresistive effect element records and reads out data of at least three levels based on a synthetic resistance from the first and second magnetoresistive effects.
摘要翻译：第一磁性层具有沿着一个方向固定的磁化。第一磁性层上的第一非磁性层用作第一隧道势垒。第一非磁性层上的第二磁性层具有通过自旋转移电流注入方向可以反转的磁化。第二磁性层上的第二非磁性层用作第二隧道势垒。第二非磁性层上的第三磁性层具有磁化，其方向可以通过在不同于第二磁性层的电流密度的电流注入的自旋转移来反转。第一磁性，第一非磁性层和第二磁性层表现出第一磁阻效应。第二磁性，第二非磁性和第三磁性层表现出第二磁阻效应。磁阻效应元件基于来自第一和第二磁阻效应的合成电阻来记录和读出至少三个电平的数据。

94. 发明授权

US08139403B2 Spin memory and spin transistor 有权
标题翻译：旋转记忆和自旋晶体管
公开(公告)号：US08139403B2
公开(公告)日：2012-03-20
申请号：US12885833
申请日：2010-09-20
申请人： Tomoaki Inokuchi , Takao Marukame , Mizue Ishikawa , Hideyuki Sugiyama , Hisanori Aikawa , Masahiko Nakayama , Tatsuya Kishi , Hiroaki Yoda , Yoshiaki Saito
发明人： Tomoaki Inokuchi , Takao Marukame , Mizue Ishikawa , Hideyuki Sugiyama , Hisanori Aikawa , Masahiko Nakayama , Tatsuya Kishi , Hiroaki Yoda , Yoshiaki Saito
IPC分类号： G11C11/15 , G11C29/82
CPC分类号： H01L29/66984 , G11C11/161 , G11C11/1659 , G11C11/1675 , G11C11/1677 , G11C11/1697 , H01L27/224 , H01L43/08
摘要： Certain embodiments provide a spin memory including a memory cell including a ferromagnetic stacked film that has a stacked structure in which a first ferromagnetic layer, a first nonmagnetic layer, a second ferromagnetic layer, a second nonmagnetic layer, and a third ferromagnetic layer are stacked in this order or reverse order, the third ferromagnetic layer and the second ferromagnetic layer being antiferromagnetically exchange-coupled via the second nonmagnetic layer. The ferromagnetic stacked film includes a current path in which a first and second write currents flow from the first ferromagnetic layer to the third ferromagnetic layer to write a first and second magnetization states into the first ferromagnetic layer respectively, and the second write current is higher than the first write current.
摘要翻译：某些实施例提供一种自旋存储器，其包括一个存储单元，该存储单元包括一个具有层叠结构的铁磁层叠膜，其中第一铁磁层，第一非磁性层，第二铁磁层，第二非磁性层和第三铁磁层堆叠在其中该顺序或反向顺序，第三铁磁层和第二铁磁层经由第二非磁性层反铁磁交换耦合。铁磁层叠膜包括电流路径，其中第一和第二写入电流从第一铁磁层流向第三铁磁层，以将第一和第二磁化状态分别写入第一铁磁层，并且第二写入电流高于第一次写入电流。

95. 发明申请

US20060089105A1 Radio communication apparatus and transmission power control method 有权
公开(公告)号：US20060089105A1
公开(公告)日：2006-04-27
申请号：US11248231
申请日：2005-10-13
申请人： Masahiko Nakayama
发明人： Masahiko Nakayama
IPC分类号： H04B7/00
CPC分类号： H04W52/08 , H04W52/221 , H04W52/36 , H04W52/52
摘要： A transmission power control information section issues an indication to a variable gain control amplifier at a predetermined control cycle. The variable gain control amplifier controls a transmission power according to the given indication amount. An adjustment amount generator adjusts the indication amount to be given to the variable gain control amplifier while maintaining a change in the transmission power between an indication from a transmission power control information section and subsequent indication within a predetermined range.

96. 发明申请

US20060023773A1 Transmission apparatus and peak reduction method 失效
公开(公告)号：US20060023773A1
公开(公告)日：2006-02-02
申请号：US11189699
申请日：2005-07-27
申请人： Masahiko Nakayama
发明人： Masahiko Nakayama
IPC分类号： H04B1/707
CPC分类号： H04J13/00 , H04B2201/70706
摘要： There is a problem that a delay is caused in signal processing by exercising control so as to cause amplitude peaks in a transmission signal to fall in a prescribed range. A transmission apparatus for conducting wireless communication makes a decision whether a specific pattern which causes a peak exceeding a predetermined amplitude range to be generated in frequency characteristics of a transmission signal is included in a transmission code sequence for forming the transmission signal. And the transmission apparatus selects filter coefficients which prescribe a band limiting factor for the frequency characteristics of the transmission signal, on the basis of a result of the decision, and conducts filtering on the transmission code sequence by using the selected filter coefficients.

97. 发明申请

US20050116137A1 Optical pick-up device for recording/reading information on optical recording medium 审中-公开
标题翻译：用于在光学记录介质上记录/读取信息的光学拾取装置
公开(公告)号：US20050116137A1
公开(公告)日：2005-06-02
申请号：US11008168
申请日：2004-12-10
申请人： Shigeru Oohchida , Hiroshi Akiyama , Masahiko Nakayama
发明人： Shigeru Oohchida , Hiroshi Akiyama , Masahiko Nakayama
IPC分类号： G02B5/04 , G02B5/18 , G02B5/32 , G11B7/09 , G11B7/12 , G11B7/125 , G11B7/135 , G02B7/04
CPC分类号： G11B7/1263 , G02B5/04 , G02B5/1814 , G02B5/32 , G02B27/4238 , G11B7/0909 , G11B7/123 , G11B7/1353 , G11B7/1356 , G11B7/1381
摘要： An optical pick-up device for recording/reading an optical recording medium is provided, which can efficiently utilize light emitted from the laser light source. The optical pick-up device includes a light source, an optical system, a quarter-wave plate, a diffraction component, and a photodetector unit. The photodetector unit may further include a transmitting portion for transmitting the light beam emitted from the light source, and may be disposed opposite the light source in a vicinity of the light source so that light emitted from the light source is transmitted through the transmitting portion. The transmitting portion may be an aperture provided in the photodetector unit. Alternatively, the optical pick-up device may further include an optical path separator for separating the diffracted returning light beam from the light beam that passes from the light source to the diffraction component.
摘要翻译：提供了用于记录/读取光学记录介质的光学拾取装置，其可以有效地利用从激光源发射的光。光学拾取装置包括光源，光学系统，四分之一波片，衍射分量和光电检测器单元。光检测器单元还可以包括用于透射从光源发射的光束的透射部分，并且可以在光源附近与光源相对设置，使得从光源发射的光透射通过透射部分。透射部分可以是设置在光电检测器单元中的孔。或者，光学拾取装置还可以包括光路分离器，用于将衍射的返回光束与从光源传播到衍射分量的光束分离。

98. 发明授权

US5822286A Optical disk unit, control method thereof, optical information recording medium and recording-regenerating method using this optical information recording medium 失效
标题翻译：光盘单元，其控制方法，光信息记录介质和使用该光信息记录介质的记录再生方法
公开(公告)号：US5822286A
公开(公告)日：1998-10-13
申请号：US940102
申请日：1997-09-29
申请人： Masahiko Nakayama , Hiroshi Koide , Akihiko Shimizu
发明人： Masahiko Nakayama , Hiroshi Koide , Akihiko Shimizu
IPC分类号： G11B7/007 , G11B7/013 , G11B7/085 , G11B7/09 , G11B7/26 , G11B7/00
CPC分类号： G11B7/08505 , G11B7/00718 , G11B7/00745 , G11B7/24085 , G11B7/261 , G11B7/0901 , G11B7/0938 , G11B7/0943
摘要： In a control method of an optical disk unit, it is judged by performing a tentative tracking operation of an optical pickup in a constant region of an optical disk whether a tracking position of the optical pickup is located in a land or groove portion. After a correct tracking control condition is judged, an access operation according to command information is executed. The optical disk unit has a two-divisional light receiving element for receiving diffracted light caused by a pregroove and a prepit of the optical disk, and a differentiator for generating a difference signal between signals of this light receiving element. The optical disk unit further has an adder for generating a sum signal of the signals of the light receiving element, and a tracking signal selector for selecting the difference or sum signal when the tracking operation is performed in a pregroove or prepit region, respectively. An optical information recording medium and a method for recording and regenerating information by using this optical information recording medium are also shown.
摘要翻译：在光盘单元的控制方法中，通过在光盘的恒定区域中执行光学拾取器的暂时跟踪操作来判断光学拾取器的跟踪位置是否位于平台或凹槽部分中。在判断出正确的跟踪控制条件之后，执行根据命令信息的访问操作。光盘单元具有用于接收由光盘的预槽和预凹坑引起的衍射光的二分光接收元件，以及用于在该光接收元件的信号之间产生差分信号的微分器。光盘单元还具有用于产生光接收元件的信号的和信号的加法器和用于在分别在预凹槽或预凹坑区域中执行跟踪操作时选择差值或和信号的跟踪信号选择器。还示出了光信息记录介质和通过使用该光信息记录介质来记录和再生信息的方法。

99. 发明授权

US5638354A Optical information recording medium 失效
标题翻译：光信息记录介质
公开(公告)号：US5638354A
公开(公告)日：1997-06-10
申请号：US276518
申请日：1994-07-15
申请人： Masahiko Nakayama , Hiroshi Koide , Akihiko Shimizu
发明人： Masahiko Nakayama , Hiroshi Koide , Akihiko Shimizu
IPC分类号： G11B7/007 , G11B7/013 , G11B7/085 , G11B7/09 , G11B7/26 , G11B7/00 , G11B7/24
CPC分类号： G11B7/08505 , G11B7/00718 , G11B7/00745 , G11B7/24085 , G11B7/261 , G11B7/0901 , G11B7/0938 , G11B7/0943
摘要： In a control method of an optical disk unit, it is judged by performing a tentative tracking operation of an optical pickup in a constant region of an optical disk whether a tracking position of the optical pickup is located in a land or groove portion. After a correct tracking control condition is judged, an access operation according to command information is executed. The optical disk unit has a two-divisional light receiving element for receiving diffracted light caused by a pregroove and a prepit of the optical disk, and a differentiator for generating a difference signal between signals of this light receiving element. The optical disk unit further has an adder for generating a sum signal of the signals of the light receiving element, and a tracking signal selector for selecting the difference or sum signal when the tracking operation is performed in a pregroove or prepit region, respectively. An optical information recording medium and a method for recording and regenerating information by using this optical information recording medium are also shown.
摘要翻译：在光盘单元的控制方法中，通过在光盘的恒定区域中执行光学拾取器的暂时跟踪操作来判断光学拾取器的跟踪位置是否位于平台或凹槽部分中。在判断出正确的跟踪控制条件之后，执行根据命令信息的访问操作。光盘单元具有用于接收由光盘的预槽和预凹坑引起的衍射光的二分光接收元件，以及用于在该光接收元件的信号之间产生差分信号的微分器。光盘单元还具有用于产生光接收元件的信号的和信号的加法器和用于在分别在预凹槽或预凹坑区域中执行跟踪操作时选择差值或和信号的跟踪信号选择器。还示出了光信息记录介质和通过使用该光信息记录介质来记录和再生信息的方法。

100. 发明授权

US5136559A Optical information recording and reproducing apparatus using tracking mirror 失效
标题翻译：使用跟踪镜的光信息记录和再现装置
公开(公告)号：US5136559A
公开(公告)日：1992-08-04
申请号：US491173
申请日：1990-03-09
申请人： Masahiko Nakayama
发明人： Masahiko Nakayama
IPC分类号： G11B7/085 , G11B7/09
CPC分类号： G11B7/08517 , G11B7/08564 , G11B7/0901
摘要： In an apparatus for recording and reproducing optical information, a light beam from a semiconductor laser is reflected by a rotatable tracking mirror and is converged by an objective lens disposed on a carriage to form a small light spot on an optical information recording medium so as to perform recording, reproducing and erasing operations of the information. This apparatus includes a position sensor mechanism disposed near the tracking mirror and detecting a rotary position of the tracking mirror; a carriage control mechanism disposed near the tracking mirror and controlling the movement of the carriage based on an output signal from the position sensor mechanism so as to correct an incident angle of the light beam incident to the objective lens; a light source disposed in the position sensor mechanism and fixed to a rear face side of the tracking mirror with respect to a reflecting face thereof such that the light source is rotated integrally with the tracking mirror; and a light-receiving element disposed in the position sensor mechanism and outputting a signal indicative of a rotary angle of the tracking mirror to the carriage control mechanism by receiving light emitted from the light source.
摘要翻译：在用于记录和再现光学信息的装置中，来自半导体激光器的光束被可旋转跟踪反射镜反射并被设置在滑架上的物镜会聚，以在光学信息记录介质上形成小的光点，以便执行信息的记录，再现和删除操作。该装置包括设置在跟踪反射镜附近并检测跟踪反射镜的旋转位置的位置传感器机构; 托架控制机构，设置在跟踪反射镜附近，并且基于来自位置传感器机构的输出信号控制托架的运动，以校正入射到物镜的光束的入射角; 光源，设置在所述位置传感器机构中，并相对于所述跟踪反射镜的反射面固定在所述跟踪反射镜的背面侧，使得所述光源与所述跟踪反射镜一体旋转; 以及光接收元件，其设置在所述位置传感器机构中，并且通过接收从所述光源发出的光而将指示所述跟踪反射镜的旋转角度的信号输出到所述滑架控制机构。

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