Location enabled device with power saving control and method thereof
    1.
    发明申请
    Location enabled device with power saving control and method thereof 有权
    具有省电控制的位置使能装置及其方法

    公开(公告)号:US20070241888A1

    公开(公告)日:2007-10-18

    申请号:US11404275

    申请日:2006-04-14

    IPC分类号: G08B1/08

    CPC分类号: G08B21/0202

    摘要: An energy constrained device (100) includes a motion sensor (150) operative to detect motion of the device (100); a device position determinator (130); and a controller (110) operatively coupled to the motion sensor (150) and to the device position determinator (130) and operative to receive a device location request for the energy constrained device (100), to determine whether the energy constrained device (100) has moved based on the motion sensor (150), and to determine whether to request position information from the device position determinator (130) based on device movement. A method for saving power for a device position determinator (130) in a energy constrained device (100) includes determining whether position information has been requested from the device position determinator (130); and if not so, automatically switching the device position determinator (130) to a low power consumption mode.

    摘要翻译: 能量约束装置(100)包括运动传感器(150),用于检测装置(100)的运动; 设备位置确定器(130); 以及可操作地耦合到所述运动传感器(150)和所述设备位置确定器(130)并且可操作地接收对所述能量约束设备(100)的设备位置请求的控制器(110),以确定所述能量约束设备(100 )已经基于运动传感器(150)移动,并且基于设备移动来确定是否从设备位置确定器(130)请求位置信息。 一种用于在能量受限设备(100)中为设备位置确定器(130)节省功率的方法包括:确定是否已经从设备位置确定器(130)请求位置信息; 如果不是这样,则将设备位置确定器(130)自动切换到低功耗模式。

    Low subthreshold leakage current HFET
    2.
    发明授权
    Low subthreshold leakage current HFET 失效
    低亚阈值漏电流HFET

    公开(公告)号:US5895929A

    公开(公告)日:1999-04-20

    申请号:US110976

    申请日:1998-07-07

    CPC分类号: H01L29/802

    摘要: A low subthreshold leakage current, p-channel HFET including a GaAs supporting substrate with a first GaAs buffer layer and a first Al.sub.0.75 Ga.sub.0.25 As diffusion barrier layer formed thereon and a low temperature grown layer, including one of GaAs and AlGaAs, grown at 200.degree. C. on the first diffusion barrier layer. A second Al.sub.0.75 Ga.sub.0.25 As diffusion barrier layer is positioned on the low temperature grown layer and a second GaAs buffer layer is grown on the second diffusion barrier layer. A p-channel HFET is formed on the second buffer layer.

    摘要翻译: 低亚阈值漏电流,p沟道HFET,包括具有第一GaAs缓冲层的GaAs支撑衬底和形成在其上的第一Al 0.75 Ga 0.25 As扩散阻挡层,以及包括GaAs和AlGaAs中的一种的低温生长层,其生长在 在第一扩散阻挡层上为200℃。 第二Al 0.75 Ga 0.25 As扩散阻挡层位于低温生长层上,第二GaAs缓冲层生长在第二扩散阻挡层上。 在第二缓冲层上形成p沟道HFET。

    Method and apparatus for calibrating a global positioning system oscillator
    3.
    发明授权
    Method and apparatus for calibrating a global positioning system oscillator 有权
    用于校准全球定位系统振荡器的方法和装置

    公开(公告)号:US07796083B2

    公开(公告)日:2010-09-14

    申请号:US11957790

    申请日:2007-12-17

    IPC分类号: G01S19/23

    CPC分类号: G01S19/235

    摘要: A method (200) and apparatus (100) for calibrating a global positioning system oscillator is disclosed. The apparatus may include a global positioning system receiver (120), a temperature compensated oscillator (130) coupled to the global positioning system receiver, a controller (140) coupled to the global positioning system receiver, and an offset module (150) coupled to the controller. The controller can control the operations of the apparatus. The offset module can send a calibration signal to the global positioning system receiver using values corresponding to an oscillator frequency rate of change vs. time.

    摘要翻译: 公开了一种用于校准全球定位系统振荡器的方法(200)和装置(100)。 该装置可以包括全球定位系统接收器(120),耦合到全球定位系统接收器的温度补偿振荡器(130),耦合到全球定位系统接收器的控制器(140)和耦合到 控制器。 控制器可以控制设备的操作。 偏移模块可以使用与振荡器频率变化率对时间相对应的值向全球定位系统接收器发送校准信号。

    Satellite positioning system receivers and methods
    4.
    发明申请
    Satellite positioning system receivers and methods 有权
    卫星定位系统接收机和方法

    公开(公告)号:US20060284765A1

    公开(公告)日:2006-12-21

    申请号:US11158127

    申请日:2005-06-21

    IPC分类号: G01S5/14 G01S1/00 H04Q7/20

    摘要: A mobile wireless communication device (200) including a wireless transceiver (210) communicably coupled to a processor (220), a satellite positioning system receiver (250), wherein the processor controls an operating mode of the satellite positioning system receiver based on satellite positioning system operating mode information received by the wireless transceiver when the mobile wireless communication device is in a vicinity of a location or will be in the vicinity on which the satellite positioning system operating mode information is based. Controlling the operating mode includes controller whether and when and the frequency with which location measurements are made.

    摘要翻译: 一种移动无线通信设备(200),包括可通信地耦合到处理器(220)的无线收发器(210),卫星定位系统接收器(250),其中处理器基于卫星定位来控制卫星定位系统接收机的操作模式 当移动无线通信设备处于某个位置附近或将在卫星定位系统操作模式信息所基于的附近时由无线收发器接收的系统操作模式信息。 控制操作模式包括控制器是否和何时以及进行位置测量的频率。

    METHOD AND APPARATUS FOR CALIBRATING A GLOBAL POSITIONING SYSTEM OSCILLATOR
    5.
    发明申请
    METHOD AND APPARATUS FOR CALIBRATING A GLOBAL POSITIONING SYSTEM OSCILLATOR 有权
    用于校准全球定位系统振荡器的方法和装置

    公开(公告)号:US20090153398A1

    公开(公告)日:2009-06-18

    申请号:US11957790

    申请日:2007-12-17

    IPC分类号: G01S1/00

    CPC分类号: G01S19/235

    摘要: A method (200) and apparatus (100) for calibrating a global positioning system oscillator is disclosed. The apparatus may include a global positioning system receiver (120), a temperature compensated oscillator (130) coupled to the global positioning system receiver, a controller (140) coupled to the global positioning system receiver, and an offset module (150) coupled to the controller. The controller can control the operations of the apparatus. The offset module can send a calibration signal to the global positioning system receiver using values corresponding to an oscillator frequency rate of change vs. time.

    摘要翻译: 公开了一种用于校准全球定位系统振荡器的方法(200)和装置(100)。 该装置可以包括全球定位系统接收器(120),耦合到全球定位系统接收器的温度补偿振荡器(130),耦合到全球定位系统接收器的控制器(140)和耦合到 控制器。 控制器可以控制设备的操作。 偏移模块可以使用与振荡器频率变化率对时间相对应的值向全球定位系统接收器发送校准信号。