Disk drive with phase-quadrature servo pattern and demodulated position error signal insensitive to timing and phase-misalignment errors
    11.
    发明申请
    Disk drive with phase-quadrature servo pattern and demodulated position error signal insensitive to timing and phase-misalignment errors 失效
    具有相位正交伺服模式的磁盘驱动器和解调位置误差信号对定时和相位错位误差不敏感

    公开(公告)号:US20060279873A1

    公开(公告)日:2006-12-14

    申请号:US11148752

    申请日:2005-06-09

    IPC分类号: G11B5/596

    CPC分类号: G11B5/59688

    摘要: A magnetic recording disk drive uses a phase-quadrature position-error-signal (PES) pattern and a servo signal demodulator that is insensitive to clock errors and phase-misalignment errors. The disk has angularly-spaced servo sectors, with each servo sector having radially-spaced servo tracks that contain a phase-quadrature pattern of servo blocks. A first band in each servo sector contains two generally like patterns radially-spaced in the servo track with the second pattern phase-shifted 90 degrees along-the-track from the first pattern. A second band in each servo sector is spaced along-the-track from the first band and also has two patterns like those in the first band, but with the phase shift of the second pattern being in the opposite direction to the phase shift of the second pattern in the first band. The demodulator calculates the true amplitudes of the servo signal from the measured amplitudes of the servo signals from each band to thereby remove clock errors and phase-misalignment errors.

    摘要翻译: 磁记录盘驱动器使用对时钟误差和相位错位误差不敏感的相位正交位置误差信号(PES)模式和伺服信号解调器。 磁盘具有角度间隔的伺服扇区,每个伺服扇区具有包含伺服块的相位正交模式的径向间隔的伺服磁道。 每个伺服扇区中的第一频带包含在伺服轨道中径向间隔的两个大致相似的模式,其中第二模式与第一模式沿着轨迹相移90度。 每个伺服扇区中的第二频带与第一频带沿着轨道间隔开,并且还具有与第一频带中的那些相似的两个模式,但是第二模式的相移与相位偏移相反 第一个乐队的第二个模式。 解调器根据来自每个频带的伺服信号的测量幅度计算伺服信号的真实振幅,从而消除时钟误差和相位误差。

    Method for improving GPS integrity and detecting multipath interference using inertial navigation sensors and a network of mobile receivers
    12.
    发明申请
    Method for improving GPS integrity and detecting multipath interference using inertial navigation sensors and a network of mobile receivers 有权
    使用惯性导航传感器和移动接收机网络改善GPS完整性和检测多路径干扰的方法

    公开(公告)号:US20060265129A1

    公开(公告)日:2006-11-23

    申请号:US11495010

    申请日:2006-07-27

    IPC分类号: G01C21/00

    摘要: A method for checking the integrity of GPS measurements for a moving vehicle includes determining a first inter-vehicle distance between a first vehicle and a second vehicle based on GPS measurements obtained at both vehicles, independently determining a second inter-vehicle distance based on relative motion of the first vehicle and the second vehicle obtained using INS sensors at both vehicles, and comparing the the first and second inter-vehicle distances. The integrity of the GPS measurements are checked if the first and second inter-vehicle distances are nearly equivalent. Methods for error detection and for mapping GPS multipath levels at each point in a vicinity for an entire range of satellite constellations are also described.

    摘要翻译: 一种用于检查移动车辆的GPS测量的完整性的方法包括基于在两个车辆获得的GPS测量值来确定第一车辆与第二车辆之间的第一车辆间距离,基于相对运动独立地确定第二车辆间距离 使用两个车辆上的INS传感器获得的第一车辆和第二车辆,并且比较第一和第二车辆间距离。 如果第一和第二车间距离几乎相等,则检查GPS测量的完整性。 还描述了对于卫星星座的整个范围的误差检测和用于在附近的每个点处映射GPS多径电平的方法。

    Method and apparatus for providing a more powerful user-interface to device with a limited user-interface
    19.
    发明授权
    Method and apparatus for providing a more powerful user-interface to device with a limited user-interface 有权
    用于向具有有限用户界面的设备提供更强大的用户界面的方法和装置

    公开(公告)号:US07577910B1

    公开(公告)日:2009-08-18

    申请号:US09613113

    申请日:2000-07-10

    IPC分类号: G06F3/00

    CPC分类号: G06F9/452

    摘要: A method and apparatus for controlling a computer device with a limited user-interface via a remote computer device having a more powerful user interface. Both computer devices are interconnected via a wireless communication channel and both computer devices support a common communications protocol. User-interface information is sent from the computer device with a limited user-interface to the remote computer device to provide a user-interface at the remote computer device for receiving user input at the remote computer device. The user input controls the computer device with a limited user-interface to execute commands therein corresponding to the user input.

    摘要翻译: 一种用于通过具有更强大的用户界面的远程计算机设备来控制具有有限用户界面的计算机设备的方法和装置。 两个计算机设备经由无线通信信道互连,并且两个计算机设备都支持公共通信协议。 将用户界面信息从具有有限用户界面的计算机设备发送到远程计算机设备,以在远程计算机设备处提供用于在远程计算机设备处接收用户输入的用户界面。 用户输入用有限的用户界面来控制计算机设备,以执行与用户输入相对应的命令。

    OPTOELECTRONIC DEVICE AND METHOD OF OPERATING OPTOELECTRONIC DEVICE
    20.
    发明申请
    OPTOELECTRONIC DEVICE AND METHOD OF OPERATING OPTOELECTRONIC DEVICE 有权
    光电装置及操作光电装置的方法

    公开(公告)号:US20080247436A1

    公开(公告)日:2008-10-09

    申请号:US12059111

    申请日:2008-03-31

    IPC分类号: H01S5/183

    摘要: The invention provides an optoelectronic device combining a vertical cavity surface emitting laser (VCSEL) and a photodetector for monitoring the output power of the vertical cavity surface emitting laser. To improve the signal-to-noise ratio of the photodetector, a light deflector is interposed between the photodetector and the VCSEL.

    摘要翻译: 本发明提供了组合垂直腔表面发射激光器(VCSEL)和用于监测垂直腔表面发射激光器的输出功率的光电检测器的光电子器件。 为了提高光电检测器的信噪比,光检测器和VCSEL之间插入有光偏转器。