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1. 发明授权

US5467328A Lens drive mechanism for optical disc player with parallel support springs having different spring constants 失效
标题翻译：具有不同弹簧常数的平行支撑弹簧的光盘播放器的镜头驱动机构
公开(公告)号：US5467328A
公开(公告)日：1995-11-14
申请号：US285513
申请日：1994-08-04
申请人： Yutaka Murakami , Toru Nakamura , Takao Hayashi , Akira Matsubara , Hisashi Aizawa
发明人： Yutaka Murakami , Toru Nakamura , Takao Hayashi , Akira Matsubara , Hisashi Aizawa
IPC分类号： G11B7/09
CPC分类号： G11B7/0932
摘要： A lens drive mechanism for an optical disc player includes a movable unit including an objective lens for focusing a coherent beam of light on an optical disc, a lens holder carrying the objective lens, focusing and tracking coils secured to opposite portions of a periphery of the lens holder. The lens drive mechanism also includes permanent magnets and yokes, and a plurality of support members connected at one end to the periphery of the lens holder and at the opposite end to a support fixture for supporting the movable unit for movement in focusing and tracking directions substantially perpendicular to each other. A upper set of the support members has a spring constant different from that of a lower set of the support members, and the product of the spring constant of the upper set of the support members multiplied by a distance from the center of gravity of the movable unit to a position of securement of the upper set of the support members is chosen to be equal to the product of the spring constant of the lower set of the support members multiplied by a distance from the center of gravity of the movable unit to a position of securement of the lower set of the support members.
摘要翻译：用于光盘播放器的透镜驱动机构包括：可移动单元，包括用于将相干光束聚焦在光盘上的物镜，承载物镜的透镜架，固定到所述物镜周边的相对部分的聚焦和跟踪线圈镜头座透镜驱动机构还包括永磁体和轭，以及多个支撑构件，其一端连接到透镜保持器的周边，并且在相对端连接到支撑固定件，用于支撑可移动单元以基本上在聚焦和跟踪方向上移动彼此垂直。上一组支撑构件具有与下一组支撑构件的弹簧常数不同的弹簧常数，并且上部支撑构件的弹簧常数乘以距离可移动的重心的距离的乘积单元到上部支撑构件的固定位置被选择为等于下部支撑构件的弹簧常数乘以距离可移动单元的重心的距离乘以位置固定下一组支撑构件。

2. 发明授权

US5430699A Optical reading and writing device 失效
标题翻译：光学读写装置
公开(公告)号：US5430699A
公开(公告)日：1995-07-04
申请号：US200456
申请日：1994-02-23
申请人： Akira Matsubara , Takao Hayashi , Yutaka Murakami , Toru Nakamura , Hideki Aiko
发明人： Akira Matsubara , Takao Hayashi , Yutaka Murakami , Toru Nakamura , Hideki Aiko
IPC分类号： G11B7/095 , G11B7/00
CPC分类号： G11B7/0956 , G11B7/0935
摘要： The relative tilt of an optical disk and a movable objective lens holder is measured as an output of a differential amplifier which subtracts an output of first photodetectors and which detect the reflected light from optical disk from an output of second photodetectors and which detect the reflected light from a reflector mounted on movable objective lens holder. The signal from differential amplifier is used to tilt movable objective lens holder so that the movable objective lens holder compensates the tilt of optical disk.
摘要翻译：测量光盘和可移动物镜座的相对倾斜度作为差分放大器的输出，该差分放大器减去第一光电检测器的输出，并从第二光电检测器的输出检测来自光盘的反射光，并检测反射光从安装在可移动物镜座上的反射器。来自差分放大器的信号用于倾斜可动物镜保持器，使得可移动物镜保持器补偿光盘的倾斜。

3. 发明授权

US5781351A Mounting structure of objective lens for optical pick-up used for optical disk device 失效
标题翻译：用于光盘装置的光学拾取物镜的安装结构
公开(公告)号：US5781351A
公开(公告)日：1998-07-14
申请号：US657740
申请日：1996-05-31
申请人： Yutaka Murakami , Takao Hayashi , Tomotada Kamei
发明人： Yutaka Murakami , Takao Hayashi , Tomotada Kamei
IPC分类号： G02B7/02 , G11B7/09 , G11B7/135 , G11B7/22
CPC分类号： G11B7/1372 , G02B7/025 , G11B7/22 , G11B7/0935
摘要： An optical pick-up for use in optical disk devices comprises an objective lens having an outer ring formed therearound and a lens holder for positioning and holding the objective lens, the lens holder having first and second inner walls between which an annular shoulder portion is formed, and plural recesses formed on the annular shoulder portion as reservoirs into which excess adhesive agent is collected when adhesive agent is applied to a gap defined between the first inner wall and the outer ring of the objective lens. Various structures for collecting excess adhesive agent are also disclosed.
摘要翻译：用于光盘装置的光学拾取器包括具有形成在其周围的外环的物镜和用于定位和保持物镜的透镜保持器，透镜保持器具有形成有环形肩部的第一和第二内壁以及形成在环形肩部上的多个凹部作为储存器，当粘合剂施加到限定在物镜的第一内壁和外圈之间的间隙时，多余的粘合剂被收集到其中。还公开了用于收集多余粘合剂的各种结构。

4. 发明授权

US09981185B2 Server enabled user data exchange between information processing devices 有权
公开(公告)号：US09981185B2
公开(公告)日：2018-05-29
申请号：US14744041
申请日：2015-06-19
申请人： Masato Kuwahara , Yutaka Murakami
发明人： Masato Kuwahara , Yutaka Murakami
IPC分类号： A63F13/35 , A63F13/79 , H04L29/08 , H04W76/02 , H04W4/02 , H04W4/00
CPC分类号： A63F13/35 , A63F13/79 , H04L67/2871 , H04W4/023 , H04W4/029 , H04W4/80 , H04W76/11
摘要： A server device includes: a receiving unit configured to receive, from each of a plurality of information-processing devices, location information showing a respective location of each information-processing device; a setting unit configured to set a condition showing that one information-processing device is close to another information-processing device, based on a predetermined parameter; a determining unit configured to determine whether a first information-processing device and a second information-processing device from among the plurality of information-processing devices satisfy the condition based on the location information received by the receiving unit; and a transmitting unit configured to transmit information determined at the determining unit to the first information-processing device and the second information-processing device, in a case that the determining unit determines that the first information-processing device and the second information-processing device satisfy the condition.

5. 发明授权

US09287946B2 Precoding method, and transmitting device 有权
标题翻译：预编码方法和发送装置
公开(公告)号：US09287946B2
公开(公告)日：2016-03-15
申请号：US13810783
申请日：2011-12-01
申请人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
发明人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC分类号： H04B7/04 , H04L25/03 , H04B7/06
CPC分类号： H04B7/0456 , H04B7/0469 , H04B7/06 , H04B7/0606 , H04B7/0689 , H04L25/03898
摘要： Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.
摘要翻译：公开了一种用于同时发送相同频率的第一调制信号和第二调制信号的传输方案。根据传输方案，预编码权重乘法单元在第一映射之后将预编码权重乘以基带信号和在第二映射之后将基带信号相乘，并输出第一调制信号和第二调制信号。在预编码权重乘法单元中，规则地跳跃预编码权重。

6. 发明授权

US09112568B2 Transmission device, transmission method, receiving device and receiving method 有权
标题翻译：传输设备，传输方式，接收设备和接收方式
公开(公告)号：US09112568B2
公开(公告)日：2015-08-18
申请号：US14128296
申请日：2012-06-21
申请人： Mikihiro Ouchi , Yutaka Murakami , Tomohiro Kimura
发明人： Mikihiro Ouchi , Yutaka Murakami , Tomohiro Kimura
IPC分类号： H04B7/02 , H04B7/10 , H04B7/06 , H04W52/18 , H04B10/532
CPC分类号： H04B7/10 , H04B7/0689 , H04B10/532 , H04W52/18 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/168 , Y02D70/442 , Y02D70/444
摘要： A transmission device transmits by performing SISO using a first polarization and by performing MISO and MIMO using the first (V) polarization and a second (H) polarization. For SISO communication, transmission is performed using an antenna having the first (V) polarization. For MISO and MIMO communication, transmission is performed using the antenna having the first (V) polarization and an antenna having the second (H) polarization. Accordingly, a reception device equipped only with a system for the antenna having the first (V) polarization is able to continue receiving the transmit data by SISO.
摘要翻译：传输设备通过使用第一偏振执行SISO并且通过使用第一（V）偏振和第二（H）偏振来执行MISO和MIMO来发送。对于SISO通信，使用具有第一（V）极化的天线进行发送。对于MISO和MIMO通信，使用具有第一（V）极化的天线和具有第二（H）极化的天线来执行传输。因此，仅配备具有第一（V）极化的天线的系统的接收装置能够通过SISO继续接收发送数据。

7. 发明授权

US09054757B2 Signal generating method and signal generating apparatus 有权
标题翻译：信号产生方法和信号发生装置
公开(公告)号：US09054757B2
公开(公告)日：2015-06-09
申请号：US14241130
申请日：2012-09-06
申请人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
发明人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC分类号： H04B7/04 , H04L5/00
CPC分类号： H04B7/0469 , H04B1/0057 , H04B7/0417 , H04B7/0426 , H04B7/0456 , H04B7/0465 , H04L5/00 , H04L5/0023 , H04L5/0044 , H04L5/0048 , H04L25/0222 , H04L27/20 , H04L27/34 , H04L27/36
摘要： A transmission method for simultaneously transmitting a first modulated signal and a second modulated signal at the same frequency includes performing precoding on both signals using a fixed precoding matrix and regularly changing the phase of at least one of the signals. In this method, the power ratio between a plurality of signals transmitted from a plurality of antennas at the same frequency and at the same time differs from the power ratio between a plurality of pilot signals transmitted from the plurality of antennas at the same frequency and at the same time, whereby the accuracy of channel estimation by a reception device is improved.
摘要翻译：用于以相同频率同时发射第一调制信号和第二调制信号的传输方法包括使用固定预编码矩阵对两个信号执行预编码，并定期改变至少一个信号的相位。在该方法中，以相同频率和同一时间从多个天线发送的多个信号之间的功率比与在相同频率和相同频率下从多个天线发送的多个导频信号之间的功率比不同同时，提高了接收装置的信道估计精度。

8. 发明授权

US09008225B2 Pre-coding method and pre-coding device 有权
标题翻译：预编码方式和预编码装置
公开(公告)号：US09008225B2
公开(公告)日：2015-04-14
申请号：US14111334
申请日：2012-04-18
申请人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
发明人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC分类号： H04B7/04 , H04L1/00 , H04L1/06 , H04L1/20
CPC分类号： H04B7/0465 , H04B1/713 , H04B7/0456 , H04B7/0469 , H04B7/0615 , H04L1/0009 , H04L1/005 , H04L1/0643 , H04L1/20
摘要： Disclosed is a precoding method comprising the steps of: generating a first coded block and a second coded block with use of a predetermined error correction block coding scheme; generating a first precoded signal z1 and a second precoded signal z2 by performing a precoding process, which corresponds to a matrix selected from among the N matrices F[i], on a first baseband signal s1 generated from the first coded block and a second baseband signal s2 generated from the second coded block, respectively; the first precoded signal z1 and the second precoded signal z2 satisfying (z1, z2)T=F[i](s1, s2)T; and changing both of or one of a power of the first precoded signal z1 and a power of the second precoded signal z2, such that an average power of the first precoded signal z1 is less than an average power of the second precoded signal z2.
摘要翻译：公开了一种预编码方法，包括以下步骤：利用预定的纠错块编码方案产生第一编码块和第二编码块; 通过对从第一编码块产生的第一基带信号s1和第二编码块产生第一基带信号s1，执行对应于从N个矩阵F [i]中选择的矩阵的预编码处理，生成第一预编码信号z1和第二预编码信号z2 分别从第二编码块产生的信号s2; 第一预编码信号z1和第二预编码信号z2满足（z1，z2）T = F [i]（s1，s2）T; 并且改变第一预编码信号z1的功率和第二预编码信号z2的功率中的两者或一者，使得第一预编码信号z1的平均功率小于第二预编码信号z2的平均功率。

9. 发明授权

US08971439B2 Precoding method, precoding device 有权
标题翻译：预编码方法，预编码装置
公开(公告)号：US08971439B2
公开(公告)日：2015-03-03
申请号：US13985707
申请日：2012-02-17
申请人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
发明人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC分类号： H04B7/02 , H04B7/04 , H04L25/03
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0469 , H04B7/0617 , H04L25/03171 , H04L25/03942 , H04L25/03949 , H04L27/18 , H04L27/2626 , H04L27/34
摘要： Disclosed is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time. According to the precoding method, one matrix is selected from among matrices defining a precoding process that is performed on the plurality of baseband signals by hopping between the matrices. A first baseband signal and a second baseband signal relating to a first coded block and a second coded block generated by using a predetermined error correction block coding scheme satisfy a given condition.
摘要翻译：公开了一种用于从多个基带信号生成同时以相同频带发送的多个预编码信号的预编码方法。根据预编码方法，从定义通过在矩阵之间跳跃对多个基带信号执行的预编码处理的矩阵中选择一个矩阵。与通过使用预定的纠错块编码方案生成的第一编码块和第二编码块相关的第一基带信号和第二基带信号满足给定条件。

10. 发明授权

US08867482B2 Signal generation method and signal generation device 有权
公开(公告)号：US08867482B2
公开(公告)日：2014-10-21
申请号：US13811044
申请日：2011-11-29
申请人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
发明人： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC分类号： H04W4/00 , H04B7/06 , H04L25/06 , H04L25/03 , H04B7/04 , H04L5/00 , H04L25/02
CPC分类号： H04B7/0456 , G06F11/10 , H04B7/0413 , H04B7/0482 , H04B7/0669 , H04B7/0682 , H04B7/0697 , H04L1/0058 , H04L5/005 , H04L25/0224 , H04L25/03898 , H04L25/067 , H04L27/2627 , H04L27/2649 , H04W72/044
摘要： A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

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