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72 条记录 (耗时 0.018 秒)

    SIGNAL MONITORING SYSTEMS
    43.
    发明公开
    SIGNAL MONITORING SYSTEMS 审中-公开
    SIGNALÜBERWACHUNGSSYSTEME

    公开(公告)号：EP2998755A1

    公开(公告)日：2016-03-23

    申请号：EP15191103.9

    申请日：2011-05-24

    申请人： O2MICRO INC.

    发明人： Guoxing, Li

    IPC分类号： G01R31/36 ,  H03H19/00

    CPC分类号： G01R31/362 ,  G01R31/3658 ,  H03H19/004

    摘要： A signal monitoring system for monitoring a plurality of signals includes a node, a first terminal, a second terminal, and a signal filter. The node receives an input signal and a reference signal selectively. The input signal is selected from the plurality of signals. The first terminal provides an output signal determined by the input signal and the reference signal. The second terminal receives a feedback signal indicative of the output signal. The signal filter comprises energy storage circuitry coupled to the node and the first and second terminals. The energy storage circuitry generates the output signal at the first terminal according to the input signal and the reference signal. The energy storage circuitry also receives the input signal via the node and the feedback signal via the second terminal in alternating fashion. A dominant pole of the signal filter is controlled by the frequency at which the input signal and the feedback signal alternate. The frequency has a first value when the input signal is switched from a first signal of the plurality of signals to a second signal of the plurality of signals. The frequency has a second value less than the first value when a time interval expires.

    摘要翻译： 用于监测多个信号的信号监控系统包括节点，第一终端，第二终端和信号滤波器。 节点选择性地接收输入信号和参考信号。 从多个信号中选择输入信号。 第一端子提供由输入信号和参考信号确定的输出信号。 第二终端接收表示输出信号的反馈信号。 信号滤波器包括耦合到节点和第一和第二终端的能量存储电路。 能量存储电路根据输入信号和参考信号在第一端产生输出信号。 能量存储电路还经由节点和经由第二终端的交流方式的反馈信号接收输入信号。 信号滤波器的主极由输入信号和反馈信号交替的频率控制。 当输入信号从多个信号的第一信号切换到多个信号的第二信号时，频率具有第一值。 当时间间隔到期时，频率具有小于第一值的第二值。

    Method and apparatus for synchronizing navigation data
    44.
    发明公开
    Method and apparatus for synchronizing navigation data 审中-公开
    同步导航数据的方法和装置

    公开(公告)号：EP2703841A1

    公开(公告)日：2014-03-05

    申请号：EP13179371.3

    申请日：2013-08-06

    申请人： O2Micro, Inc.

    发明人： Zou, Jinghua ,  Gou, Juan ,  Su, Yen-Jung

    IPC分类号： G01S19/23 ,  G01S19/24

    CPC分类号： G01S19/23 ,  G01S19/24

    摘要： Method, apparatus, and programs for synchronizing navigation data. A first distance between a first navigation device and a receiver and a second distance between a second navigation device and the receiver are estimated. The receiver receives first and second navigation data from the first and second navigation devices, respectively. Based on a first sending time of the first navigation data sent from the first navigation device and the first and second distances, a second sending time of the second navigation data sent from the second navigation device is then determined. Synchronization information of the second navigation device is computed based on the second sending time of the second navigation data. The synchronization information is used for synchronizing the second navigation data received at the receiver.

    摘要翻译： 用于同步导航数据的方法，装置和程序。 估计第一导航装置与接收器之间的第一距离以及第二导航装置与接收器之间的第二距离。 接收器分别从第一和第二导航装置接收第一和第二导航数据。 基于从第一导航设备发送的第一导航数据的第一发送时间以及第一距离和第二距离，然后确定从第二导航设备发送的第二导航数据的第二发送时间。 基于第二导航数据的第二发送时间来计算第二导航装置的同步信息。 同步信息被用于同步在接收器处接收到的第二导航数据。

    Global positioning system receiver
    46.
    发明公开
    Global positioning system receiver 有权
    GPS接收器

    公开(公告)号：EP2128638A3

    公开(公告)日：2010-07-28

    申请号：EP08165584.7

    申请日：2008-10-01

    申请人： O2Micro, Inc.

    发明人： Yu, Xiaoguang ,  Huang, Haiquan ,  Zou, Jinghua

    IPC分类号： G01S1/00

    CPC分类号： G01S19/27

    摘要： A GPS receiver includes a demodulator for obtaining ephemeris data and almanac data from a navigation message sent by satellites, and includes a calculator. The calculator is used for calculating almanac correction parameters according to coordinate differences between ephemeris-based coordinates of the satellites and almanac-based coordinates of the satellites. The GPS receiver also includes a satellite position calculator for calculating the ephemeris-based coordinates of the satellites according to the ephemeris data, for calculating the almanac-based coordinates of the satellites according to the almanac data, and for calculating positions of the satellites according to the ephemeris data, the almanac data and the almanac correction parameters.

    HASH function implement with ROM and CSA
    47.
    发明公开
    HASH function implement with ROM and CSA 审中-公开
    HASH函数版本的ROM和CSA

    公开(公告)号：EP2006766A3

    公开(公告)日：2009-10-28

    申请号：EP07017163.2

    申请日：2007-09-01

    申请人： O2Micro, Inc.

    发明人： Wei, Franny ,  Qiu, Di

    IPC分类号： G06F7/72 ,  G06F7/544 ,  G06F7/509 ,  G06F7/53

    CPC分类号： G06F7/727 ,  G06F7/509 ,  G06F7/5324 ,  G06F7/5443

    摘要： A hash unit for obtaining a hash value from hashing a set of parameters and a protocol parameter. The hash unit has a plurality of memory units for receiving the set of parameters and outputting a plurality of multiplication results, a first plurality of addition logics for receiving the plurality of multiplication results for outputting an addition result, and a second plurality of addition logics to generate the hash value wherein the hash value being equal to the addition result modulo a modulus constant.

    HIGH PRECISION ANALOG TO DIGITAL CONVERTER
    48.
    发明授权
    HIGH PRECISION ANALOG TO DIGITAL CONVERTER 有权
    高精度模拟/数字转换器

    公开(公告)号：EP1504532B1

    公开(公告)日：2008-10-15

    申请号：EP03721907.8

    申请日：2003-04-30

    申请人： O2Micro, Inc.

    发明人： LIU, Liusheng ,  LI, Guoxing

    IPC分类号： H03M1/12 ,  H03M3/02

    CPC分类号： H03M3/34 ,  H03M3/43 ,  H03M3/456

    摘要： An analog to digital converter (108) includes a cross switch array coupled between an input switch array and an integrator configured to alternately transfer charges from a first input capacitor and a second input capacitor to a first integration capacitor and a second integration capacitor thereby improving linearity problems caused by capacitor mismatching. The cross switch array may also be configured to transfer charges from the first input capacitor to the first integration capacitor and from the second input capacitor to the second integration capacitor during a first charge transfer time interval, and from the first input capacitor to the second integration capacitor and from the second input capacitor to the first integration capacitor during a second charge transfer time interval. A sensing system (100) including and ADC (108) consistent with the invention is also provided. Various methods of transferring charges in an ADC (108) are also provided.

    CONTROLLER FOR DC TO DC CONVERTER
    49.
    发明公开
    CONTROLLER FOR DC TO DC CONVERTER 有权
    控制˚FRGLEICHSTROM-DC转换器

    公开(公告)号：EP1579554A4

    公开(公告)日：2008-09-03

    申请号：EP03768919

    申请日：2003-11-12

    申请人： O2MICRO INC

    发明人： LIPCSEI LASZLO ,  POPESCU SERBAN-MIHAI

    IPC分类号： H02M1/12 ,  H02M3/156 ,  H02M3/157 ,  H02M3/158

    CPC分类号： H02M3/156 ,  H02M3/157 ,  H02M3/1582 ,  H02M3/1588 ,  H02M2001/0009 ,  H02M2001/0012 ,  Y02B70/1466

    摘要： A controller (200) for a DC-to-DC converter is configured to provide a PWM signal in a first state during a first time interval based on an input voltage less a voltage level representative of an output voltage of the DC-to-DC converter. The controller (200) may provide the PWM signal in the first state based on the time it takes to charge an energy storage element (202) of the controller (200) to a predetermined level. The controller (200) may also provide an estimator of a zero inductor current level in an associated inductor when the energy storage element (202) is completely discharged. The controller may also be a digital controller (200) that counts time pulse to provide the PWM signal. A DC-to-DC converter including such a controller (200) and associated methods are also provided.