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51. 发明授权

US07355884B2 Magnetoresistive element 有权
标题翻译：磁阻元件
公开(公告)号：US07355884B2
公开(公告)日：2008-04-08
申请号：US11245353
申请日：2005-10-07
申请人： Masahiko Nakayama , Tadashi Kai , Tatsuya Kishi , Yoshiaki Fukuzumi , Toshihiko Nagase , Sumio Ikegawa , Hiroaki Yoda
发明人： Masahiko Nakayama , Tadashi Kai , Tatsuya Kishi , Yoshiaki Fukuzumi , Toshihiko Nagase , Sumio Ikegawa , Hiroaki Yoda
IPC分类号： G11C11/00
CPC分类号： H01L43/08 , G11C11/161 , G11C11/1657 , G11C11/1659 , G11C11/1673 , G11C11/1675 , Y10T428/1121
摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.
摘要翻译：磁阻元件包括具有第一磁化的第一铁磁层，当在第一数据写入期间磁阻元件被半选择时，第一磁化具有第一图案，当在第二数据写入期间选择磁阻元件时的第二图案，以及剩余磁化的第三图案，第一图案不同于第二和第三图案，具有第二磁化的第二铁磁层，以及布置在第一铁磁层和第二铁磁层之间并且具有隧道电导变化依赖性的非磁性层在第一磁化和第二磁化之间的相对角度上。

52. 发明授权

US07328040B2 Mobile-communication equipment and transmission power control method 失效
标题翻译：移动通信设备和传输功率控制方法
公开(公告)号：US07328040B2
公开(公告)日：2008-02-05
申请号：US11060170
申请日：2005-02-17
申请人： Masahiko Nakayama
发明人： Masahiko Nakayama
IPC分类号： H04B7/00 , H04B1/04
CPC分类号： H03G3/3042 , H03F1/0205 , H03F3/24 , H03F2200/447 , H03F2200/468 , H03F2200/471 , H03F2200/99 , H03G1/04 , H03G2201/708 , H03K19/17712
摘要： Mobile communication equipment comprises a power amplifier for amplifying a transmission signal and a feedback circuit for providing feedback to allow the above-described power amplifier to output a transmission-power set value. The feedback circuit comprises an error detection unit for detecting an error between a power value obtained by detecting a portion of the power of the transmission signal amplified by the power amplifier and the transmission-power set value specified by the above-described transmission-power specifying unit, a Loop-gain generating unit for periodically switching two different loop-gain values at a predetermined time ratio to output one of them, a loop-gain multiplying unit for multiplying the error detected by the error-detection unit by the loop-gain value outputted from the loop-gain generating unit to output an error value that results from the multiplication, and a feedback-amount generating unit for integrating the error value outputted from the loop-gain multiplying unit to generate a specific amount of the feedback.
摘要翻译：移动通信设备包括用于放大传输信号的功率放大器和用于提供反馈以允许上述功率放大器输出发射功率设定值的反馈电路。该反馈电路包括一个误差检测单元，用于检测通过检测由功率放大器放大的发送信号的功率的一部分获得的功率值与由上述发送功率指定指定的发送功率设定值之间的误差单元，环路增益生成单元，用于以预定时间比周期性地切换两个不同的环路增益值，以输出其中的一个;环路增益乘法单元，用于将由错误检测单元检测到的错误乘以环路增益从所述环路增益生成单元输出的值输出由所述乘法得到的误差值，以及反馈量生成单元，用于对从所述环路增益乘法单元输出的误差值进行积分，生成所述反馈的特定量。

53. 发明申请

US20070086121A1 MAGNETORESISTIVE ELEMENT 有权
标题翻译：磁电元件
公开(公告)号：US20070086121A1
公开(公告)日：2007-04-19
申请号：US11534440
申请日：2006-09-22
申请人： Toshihiko Nagase , Masatoshi Yoshikawa , Eiji Kitagawa , Masahiko Nakayama , Tadashi Kai , Tatsuya Kishi , Hiroaki Yoda
发明人： Toshihiko Nagase , Masatoshi Yoshikawa , Eiji Kitagawa , Masahiko Nakayama , Tadashi Kai , Tatsuya Kishi , Hiroaki Yoda
IPC分类号： G11B5/127
CPC分类号： G01R33/093 , B82Y25/00 , G11C11/161 , G11C11/1675 , H01L43/08
摘要： A magnetoresistive element which records information by supplying spin-polarized electrons to a magnetic material, includes a first pinned layer which is made of a magnetic material and has a first magnetization directed in a direction perpendicular to a film surface, a free layer which is made of a magnetic material and has a second magnetization directed in the direction perpendicular to the film surface, the direction of the second magnetization reversing by the spin-polarized electrons, and a first nonmagnetic layer which is provided between the first pinned layer and the free layer. A saturation magnetization Ms of the free layer satisfies a relationship 0≧Ms
摘要翻译：通过向磁性材料提供自旋极化电子来记录信息的磁阻元件包括由磁性材料制成并且具有沿与膜表面垂直的方向的第一磁化的第一固定层，制成的自由层并且具有在垂直于膜表面的方向上的第二磁化强度，由自旋极化电子反转的第二磁化方向以及设置在第一被钉扎层和自由层之间的第一非磁性层。自由层的饱和磁化强度Ms满足关系0> = Ms <√{平方根超过（{Jw /（6nAt.Jw是写入电流密度， t是自由度的厚度层，A是常数。

54. 发明申请

US20060083057A1 Magnetoresistive element 有权
公开(公告)号：US20060083057A1
公开(公告)日：2006-04-20
申请号：US11245353
申请日：2005-10-07
申请人： Masahiko Nakayama , Tadashi Kai , Tatsuya Kishi , Yoshiaki Fukuzumi , Toshihiko Nagase , Sumio Ikegawa , Hiroaki Yoda
发明人： Masahiko Nakayama , Tadashi Kai , Tatsuya Kishi , Yoshiaki Fukuzumi , Toshihiko Nagase , Sumio Ikegawa , Hiroaki Yoda
IPC分类号： G11C11/14
CPC分类号： H01L43/08 , G11C11/161 , G11C11/1657 , G11C11/1659 , G11C11/1673 , G11C11/1675 , Y10T428/1121
摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.

55. 发明申请

US20050186922A1 Mobile-communication equipment and transmission power control method 失效
标题翻译：移动通信设备和传输功率控制方法
公开(公告)号：US20050186922A1
公开(公告)日：2005-08-25
申请号：US11060170
申请日：2005-02-17
申请人： Masahiko Nakayama
发明人： Masahiko Nakayama
IPC分类号： H03G3/30 , H04B1/04 , H04B7/26
CPC分类号： H03G3/3042 , H03F1/0205 , H03F3/24 , H03F2200/447 , H03F2200/468 , H03F2200/471 , H03F2200/99 , H03G1/04 , H03G2201/708 , H03K19/17712
摘要： Mobile communication equipment comprises a power amplifier for amplifying a transmission signal and a feedback circuit for providing feedback to allow the above-described power amplifier to output a transmission-power set value. The feedback circuit comprises an error detection unit for detecting an error between a power value obtained by detecting a portion of the power of the transmission signal amplified by the power amplifier and the transmission-power set value specified by the above-described transmission-power specifying unit, a Loop-gain generating unit for periodically switching two different loop-gain values at a predetermined time ratio to output one of them, a loop-gain multiplying unit for multiplying the error detected by the error-detection unit by the loop-gain value outputted from the loop-gain generating unit to output an error value that results from the multiplication, and a feedback-amount generating unit for integrating the error value outputted from the loop-gain multiplying unit to generate a specific amount of the feedback.
摘要翻译：移动通信设备包括用于放大传输信号的功率放大器和用于提供反馈以允许上述功率放大器输出发射功率设定值的反馈电路。该反馈电路包括一个误差检测单元，用于检测通过检测由功率放大器放大的发送信号的功率的一部分获得的功率值与由上述发送功率指定指定的发送功率设定值之间的误差单元，环路增益生成单元，用于以预定时间比周期性地切换两个不同的环路增益值，以输出其中的一个;环路增益乘法单元，用于将由错误检测单元检测到的错误乘以环路增益从所述环路增益生成单元输出的值输出由所述乘法得到的误差值，以及反馈量生成单元，用于对从所述环路增益乘法单元输出的误差值进行积分，生成所述反馈的特定量。

56. 发明授权

US06845077B2 Optical pick-up device with convergent light diffraction for recording/reading information on optical recording medium 失效
$Optical pick-up device with convergent light diffraction for recording/reading information on optical recording medium$
标题翻译：具有会聚光衍射的光学拾取装置，用于在光学记录介质上记录/读取信息
公开(公告)号：US06845077B2
公开(公告)日：2005-01-18
申请号：US10438920
申请日：2003-05-16
申请人： Shigeru Oohchida , Hiroshi Akiyama , Masahiko Nakayama
发明人： Shigeru Oohchida , Hiroshi Akiyama , Masahiko Nakayama
IPC分类号： G02B5/18 , G02B5/32 , G11B7/135
CPC分类号： G11B7/1356 , G02B5/1814 , G02B5/32 , G11B7/1353 , G11B7/1359 , 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。

57. 发明授权

US06675186B1 Decibel adjustment device with shift amount control circuit 失效
标题翻译：分位调节装置带移位量控制电路
公开(公告)号：US06675186B1
公开(公告)日：2004-01-06
申请号：US09603779
申请日：2000-06-26
申请人： Masahiko Nakayama
发明人： Masahiko Nakayama
IPC分类号： G06F752
CPC分类号： G06F7/4876
摘要： A decibel level adjustment device that calculates an output signal that is a d decibel multiple of an input signal comprises a plurality of shift circuits, a shift amount control circuit, and adders. The shift circuits shift an input signal by exactly a designated number of bits in a designated direction. The shift amount control circuit receives the value of d as a decibel control value, and in accordance with this decibel control value, generates and outputs control signals that indicate the number of bits to shift and the shift direction of each shift circuit. The adder adds the outputs of the shift circuits.
摘要翻译：计算作为输入信号的d分贝倍数的输出信号的分贝电平调整装置包括多个移位电路，移位量控制电路和加法器。移位电路在指定方向上将输入信号移位精确地指定的位数。移位量控制电路接收d的值作为分贝控制值，并且根据该分贝控制值，生成并输出指示移位的位数和每个移位电路的移位方向的控制信号。加法器将移位电路的输出相加。

58. 发明授权

US6160773A Optical disk device 失效
标题翻译：光盘装置
公开(公告)号：US6160773A
公开(公告)日：2000-12-12
申请号：US158501
申请日：1998-09-23
申请人： Hiroshi Maegawa , Masahiko Nakayama
发明人： Hiroshi Maegawa , Masahiko Nakayama
IPC分类号： G11B7/09
CPC分类号： G11B7/0901 , G11B7/0938 , G11B7/094
摘要： An optical disk device performs tracking on a recordable optical disk which has an information recording track and a guiding track for guiding an optical beam to the information recording track, the guiding track having pre-pits including address information recorded therein. This device includes a photodetector which is divided into two divisions by a dividing line which is approximately optically parallel to the tangential line of the information recording track of the optical disk, and receives reflected light of the optical beam which is incident on the information recording track, and a tracking-error-signal generating portion having the respective outputs of the two divisions of the photodetector input thereto and generating a tracking error signal which is used for performing the tracking on the optical disk. The tracking-error-signal generating portion includes first and second holding portions holding local maximum values of the outputs of the two divisions of the photodetector, respectively, and a pre-pit-signal subtracting portion obtaining the differential signal of respective outputs of the first and second holding portions.
摘要翻译：光盘装置对可记录光盘执行跟踪，该可记录光盘具有用于将光束引导到信息记录轨道的信息记录轨道和导轨，该导轨具有包含记录在其中的地址信息的预定凹坑。该装置包括光电检测器，该光电检测器通过与光盘的信息记录轨道的切线近似光学平行的分割线分成两个部分，并且接收入射在信息记录轨道上的光束的反射光以及跟踪误差信号产生部分，其具有输入到其的光电检测器的两个分区的相应输出，并产生用于在光盘上执行跟踪的跟踪误差信号。跟踪误差信号产生部分分别包括第一和第二保持部分，分别保持光电检测器的两个部分的输出的局部最大值，以及预凹陷信号减去部分，获得第一和第二保持部。

59. 发明授权

US6122241A Optical pick-up device for processing central and peripheral optical signal components 失效
标题翻译：用于处理中央和外围光信号部件的光拾取装置
公开(公告)号：US6122241A
公开(公告)日：2000-09-19
申请号：US593903
申请日：1996-01-30
申请人： Hiroshi Akiyama , Masahiko Nakayama
发明人： Hiroshi Akiyama , Masahiko Nakayama
IPC分类号： G11B7/12 , G11B7/13 , G11B7/135 , G11B7/08
CPC分类号： G11B7/131 , G11B7/123 , G11B7/133 , G11B7/1353 , G11B7/1356 , G11B7/1359 , G11B7/1381
摘要： An optical pick-up device for at least one of recording, reproducing and deleting data on a recording medium includes a light source emitting a light, an objective lens focusing the light from the light source at a predetermined position of a data track of the recording medium and a light receiving element detecting a reflected light from the recording medium. A light receiving means divides the reflected light from the recording medium in a data track direction and detects a part of the reflected light. The reflected light is divided onto the light receiving element into a central component and peripheral components and an original signal is reproduced from at least one of a difference between the peripheral components and the difference between the peripheral components and a central component.
摘要翻译：用于在记录介质上记录，再现和删除数据中的至少一个的光学拾取装置包括发射光的光源，将来自光源的光聚焦在记录的数据轨道的预定位置处的物镜介质和光接收元件，其检测来自记录介质的反射光。光接收装置在数据轨道方向上分割来自记录介质的反射光并检测部分反射光。反射光被分成光接收元件，成为中心部件，外围部件和原始信号从周边部件之间的差异和周边部件与中心部件之间的差异中的至少一个再现。

60. 发明授权

US5060214A Optical pickup device keeping coincident the optical axes of the objective lens and of the recording/reproducing beam 失效
标题翻译：保持与物镜和记录/再现光束的光轴重合的光学拾取装置
公开(公告)号：US5060214A
公开(公告)日：1991-10-22
申请号：US383029
申请日：1989-07-20
申请人： Masahiko Nakayama , Toshihiro Shigemori , Haruhiko Kono , Kiyoshi Yokomori
发明人： Masahiko Nakayama , Toshihiro Shigemori , Haruhiko Kono , Kiyoshi Yokomori
IPC分类号： G11B7/09 , G11B11/105
CPC分类号： G11B7/0909 , G11B11/10532 , G11B7/0901 , G11B7/094
摘要： An optical pickup device for an optical recording disk having an information recording surface comprises an objective lens for converging a light beam emitted from a light source onto the information recording surface of the disk so as to form a beam spot thereon along an information track of the disk. At least one light detecting unit comprised of a plurality of photodetectors is provided for the detection of focus and tracking errors and the detection of the position of the optical axis of the objective lens. Each of the photodetectors is able to receive a light beam reflected by the information recording surface of the disk and to produce an output signal which is proportional to the amount of the light beam incident thereon. At least two photodetectors of the light detecting unit are separated from each other through a separation line which is optically parallel to a tangent to the information track of the disk so that a differential signal corresponding to the difference between the levels of the output signals produced by the two photodetectors can be obtained as a lens position detection signal which is used for the detection of position of the optical axis of the objective lens in relation to the photodetectors.
摘要翻译：一种具有信息记录表面的光记录盘的光学拾取装置，包括用于将从光源发射的光束会聚到盘的信息记录表面上的物镜，以便沿着光盘的信息轨迹形成光束点磁盘。提供由多个光电检测器组成的至少一个光检测单元，用于检测聚焦和跟踪误差以及物镜的光轴位置的检测。每个光电检测器能够接收由盘的信息记录表面反射的光束，并产生与入射在其上的光束的量成比例的输出信号。光检测单元的至少两个光电检测器通过与光盘的信息轨道的切线光学平行的分离线彼此分开，使得对应于由输出信号产生的输出信号的电平之间的差异的差分信号可以获得两个光电检测器作为透镜位置检测信号，该信号用于相对于光电检测器检测物镜的光轴的位置。

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