公开(公告)号：US06215609B1

公开(公告)日：2001-04-10

申请号：US08980418

申请日：1997-11-28

Applicant: Keitaro Yamashita ,  Kanzo Okada ,  Shunji Okada ,  Masayuki Nakayama ,  Minoru Watanabe

Inventor： Keitaro Yamashita ,  Kanzo Okada ,  Shunji Okada ,  Masayuki Nakayama ,  Minoru Watanabe

IPC: G11B1902

CPC classification number: G11B19/28

Abstract: In a recording/reproduction apparatus, when a rotational-speed-mode setting instruction is received from an I/F unit, a CPU reads out a control procedure from a storage device, controlling other components in accordance with the procedure. As a result, a node switch driving circuit controls field windings of a pulse motor to a switching sequence, driving the pulse motor to rotation at a predetermined rotational speed. Since the control is feedback control, the pulse motor rotates at the predetermined rotational speed specified by an instruction setting a rotational-speed mode with a high degree of reliability. Data can thus be recorded into and reproduced from a magnetic disk at a variable speed.

Abstract translation: 在记录/再现装置中，当从I / F单元接收到转速模式设置指令时，CPU从存储装置读出控制过程，根据该过程控制其他部件。 结果，节点开关驱动电路将脉冲电动机的励磁绕组控制到开关序列，驱动脉冲电动机以预定转速旋转。 由于控制是反馈控制，所以脉冲电机以以高可靠性设定转速模式的指令指定的预定旋转速度旋转。 因此，可以以可变速度将数据记录到磁盘中并从其再现。

公开(公告)号：US07579988B2

公开(公告)日：2009-08-25

申请号：US11823478

申请日：2007-06-26

Applicant: Jin Xu ,  Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada

Inventor： Jin Xu ,  Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada

IPC: G01S5/02 ,  G01S5/04 ,  G01S7/40

CPC classification number: G01S13/4418

Abstract: A method, device and system for determining a DOA of a signal are described. Determination of the DOA of the signal may include receiving first and second UWB waveforms of the signal at one or more antennas of a UWB transceiver. A window may be defined in the first and second UWB waveforms such that the window is defined in a leading portion of the signal. First and second amplitude values of the respective first and second UWB waveforms in the window may be calculated. An amplitude ratio may be calculated with the first and second amplitude values and compared with calibration data to determine the DOA of the signal.

Abstract translation: 描述用于确定信号的DOA的方法，装置和系统。 确定信号的DOA可以包括在UWB收发器的一个或多个天线处接收信号的第一和第二UWB波形。 可以在第一和第二UWB波形中定义窗口，使得窗口被定义在信号的前导部分中。 可以计算窗口中的各个第一和第二UWB波形的第一和第二幅度值。 可以用第一和第二振幅值计算振幅比，并与校准数据进行比较以确定信号的DOA。

公开(公告)号：US07468689B2

公开(公告)日：2008-12-23

申请号：US11169119

申请日：2005-06-28

Applicant: Yugang Ma ,  Xiaobing Sun ,  Jin Xu ,  Kanzo Okada

Inventor： Yugang Ma ,  Xiaobing Sun ,  Jin Xu ,  Kanzo Okada

IPC: G01S13/42 ,  G01S13/48 ,  G01S7/03

CPC classification number: G01S13/0209 ,  G01S13/06

Abstract: A system and method for determining position of, for example, a robot based on reflected signals comprises a transmitter for transmitting signals in a number of directions within a range of directions and a receiver for receiving echoes of the signals from any direction in the range. The transmitter has a first rotatable antenna and the receiver has a second rotatable antenna which is mechanically couplable to the second antenna. The received echoes are processed by a processor to derive echo data signals indicative of the distance of the system to one or more reflective surfaces and the direction of the reflective surface(s) relative to the system. The processor is arranged to determine the position of the system relative to a starting position from the derived echo data signals indicative of the distance of the system to the reflective surface(s) and the direction of the reflective surface(s) relative to the system.

Abstract translation: 用于基于反射信号来确定例如机器人的位置的系统和方法包括用于在方向范围内的多个方向上发送信号的发射机和用于从该范围内的任何方向接收信号的回波的接收机。 发射器具有第一可旋转天线，并且接收器具有可机械耦合到第二天线的第二可旋转天线。 所接收的回波由处理器处理以得到指示系统到一个或多个反射表面的距离和相对于系统的反射表面的方向的回波数据信号。 处理器被布置成从指示系统到反射表面的距离的导出的回波数据信号和反射表面相对于系统的方向来确定系统相对于起始位置的位置 。

公开(公告)号：US07400291B2

公开(公告)日：2008-07-15

申请号：US10922749

申请日：2004-08-20

Applicant: Jin Xu ,  Kanzo Okada ,  Xiaobing Sun ,  Yugang Ma ,  Wei Lu

Inventor： Jin Xu ,  Kanzo Okada ,  Xiaobing Sun ,  Yugang Ma ,  Wei Lu

IPC: G01S13/08

CPC classification number: G01S5/0252 ,  G01S5/0273 ,  G01S2013/466

Abstract: A local positioning system is proposed for wirelessly locating an object using existing features within a static environment, such as walls, as the references for determining the position of the system. An antenna 16 attached to the object transmits RF signals which are reflected by the surroundings. During a training mode, the reflected signals are used to train a neural network 22, 43 to map the position of the object to the characteristics of the reflected signals. During a working mode, the trained neural network is to identify the position of the object based on reflected signals in working mode. Optionally, the reflected signals may be subject to a clustering process before input to the neural network.

Abstract translation: 提出了一种本地定位系统，用于使用静态环境（如墙壁）内的现有特征将物体无线定位，作为确定系统位置的参考。 安装在物体上的天线16发射被周围环境反射的RF信号。 在训练模式期间，反射信号用于训练神经网络22,43以将物体的位置映射到反射信号的特性。 在工作模式下，训练有素的神经网络是根据工作模式下的反射信号识别物体的位置。 可选地，反射信号可以在输入到神经网络之前进行聚类处理。

公开(公告)号：US20080012765A1

公开(公告)日：2008-01-17

申请号：US11823478

申请日：2007-06-26

Applicant: Jin Xu ,  Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada

Inventor： Jin Xu ,  Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada

IPC: G01S5/04

CPC classification number: G01S13/4418

Abstract: A method, device and system for determining a DOA of a signal are described. Determination of the DOA of the signal may include receiving first and second UWB waveforms of the signal at one or more antennas of a UWB transceiver. A window may be defined in the first and second UWB waveforms such that the window is defined in a leading portion of the signal. First and second amplitude values of the respective first and second UWB waveforms in the window may be calculated. An amplitude ratio may be calculated with the first and second amplitude values and compared with calibration data to determine the DOA of the signal.

Abstract translation: 描述用于确定信号的DOA的方法，装置和系统。 确定信号的DOA可以包括在UWB收发器的一个或多个天线处接收信号的第一和第二UWB波形。 可以在第一和第二UWB波形中定义窗口，使得窗口被定义在信号的前导部分中。 可以计算窗口中的各个第一和第二UWB波形的第一和第二幅度值。 可以用第一和第二振幅值计算振幅比，并与校准数据进行比较以确定信号的DOA。

公开(公告)号：US20050036234A1

公开(公告)日：2005-02-17

申请号：US10915219

申请日：2004-08-10

Applicant: Akio Takada ,  Ching Yeo ,  Kanzo Okada ,  Shun Kayama

Inventor： Akio Takada ,  Ching Yeo ,  Kanzo Okada ,  Shun Kayama

IPC: G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  G11B17/08

CPC classification number: G11B33/121 ,  G11B19/2009 ,  G11B25/043 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49023 ,  Y10T29/49025 ,  Y10T29/49027

Abstract: A HDD system includes one or more MEMS spindle motors, and one or more magnetic heads. Each spindle motor includes a rotor 127, 210 and a stator 207. The rotor 127, 210 carries a film of magnetic film, and a head 211 is arranged to communicate data with the magnetic film. The rotors 127, 210 are formed by MEMS technology. Rotor elements 6 are formed within a substrate 4, and the substrate is subsequently cut to sigulate the rotor elements 6, and turn them into rotors 127, 210.

Abstract translation: HDD系统包括一个或多个MEMS主轴电机和一个或多个磁头。 每个主轴电动机包括转子127,210和定子207.转子127,210承载一层磁性膜，并且头部211布置成与磁性膜传送数据。 转子127,210由MEMS技术形成。 转子元件6形成在基板4内，随后切割基板以对转子元件6进行绕线，并将其转换成转子127,210。

公开(公告)号：US5914833A

公开(公告)日：1999-06-22

申请号：US737216

申请日：1996-11-07

Applicant: Michio Yotsuya ,  Kazushige Kawazoe ,  Kanzo Okada

Inventor： Michio Yotsuya ,  Kazushige Kawazoe ,  Kanzo Okada

IPC: G11B5/60 ,  G11B21/21 ,  G11B17/32

CPC classification number: G11B5/6005 ,  G11B21/21

Abstract: A floating type head slider used in a disc drive using a disc-shaped recording medium, and adapted to float from the disc-shaped recording medium when the disc-shaped recording medium is rotationally operated. This head slider comprises an air lubricating surface formed on the surface opposite to the disc-shaped recording medium, a taper portion provided at the air inflow end side of the air lubricating surface, a recessed portion of a fixed depth adapted to produce negative pressure, the recessed portion being provided on the center line along the direction from the air inflow end side toward the air outflow end side of the air lubricating surface and being such that the air inflow end side is closed and the air outflow end side is opened, and a groove portion formed along the center line extending from the recessed portion toward the end portion of the air inflow end side of the air lubricating surface, and formed so as to have a width narrower than the recessed portion which divides the air lubricating surface and to have the same depth as that of the recessed portion.This head slider is floated with a fixed floating quantity from the surface of the disc-shaped recording medium in a stable state by positive pressure produced between the air lubricating surface and the surface of the rotationally operated disc-shaped recording medium and negative pressure produced by the recessed portion.

Abstract translation: PCT No.PCT / JP96 / 00563 Sec。 371日期：1996年11月7日 102（e）日期1996年11月7日PCT 1996年3月7日PCT公布。 出版物WO96 / 27876 日期1996年9月12日在使用盘状记录介质的盘驱动器中使用的浮动型磁头滑块，并且当盘状记录介质被旋转操作时适于从盘形记录介质浮动。 该头部滑块包括形成在与盘状记录介质相对的表面上的空气润滑表面，设置在空气润滑表面的空气流入端侧的锥形部分，适于产生负压的固定深度的凹陷部分， 所述凹部沿着所述空气润滑面的空气流入端侧朝向所述空气流出端侧的方向设置在所述中心线上，并且使得所述空气流入端侧封闭，并且所述空气流出端侧开放， 沿着从空气润滑面的空气流入端侧的凹部朝向端部延伸的中心线形成的槽部，形成为比分割空气润滑面的凹部窄的宽度， 具有与凹部相同的深度。 该磁头滑动器通过在空气润滑表面和旋转操作的盘形记录介质的表面之间产生的正压在稳定状态下从盘状记录介质的表面浮动固定，并由 凹部。