发明申请
WO2003073629A1 METHOD AND APPARATUS FOR COMPENSATING AN OSCILLATOR IN A LOCATION-ENABLED WIRELESS DEVICE
审中-公开
基本信息:
- 专利标题: METHOD AND APPARATUS FOR COMPENSATING AN OSCILLATOR IN A LOCATION-ENABLED WIRELESS DEVICE
- 专利标题(中):用于在位置启用的无线设备中补偿振荡器的方法和装置
- 申请号:PCT/US2003/005287 申请日:2003-02-20
- 公开(公告)号:WO2003073629A1 公开(公告)日:2003-09-04
- 发明人: ABRAHAM, Charles
- 申请人: GLOBAL LOCATE, INC.
- 申请人地址: 3190 S. Bascom, Suite 260, San Jose, CA 95124 US
- 专利权人: GLOBAL LOCATE, INC.
- 当前专利权人: GLOBAL LOCATE, INC.
- 当前专利权人地址: 3190 S. Bascom, Suite 260, San Jose, CA 95124 US
- 代理机构: MOSER, Raymond
- 优先权: US60/359,170 20020222; US10/372,015 20030220
- 主分类号: H04B1/06
- IPC分类号: H04B1/06
摘要:
A method and apparatus for compensating an oscillator (108) in a location-enabled wireless device (102) is described. In an example, a mobile device (102) includes a wireless receiver (104) for receiving wireless signals (118) and a GPS receiver (112) for receiving GPS signals (120). The mobile device (102) also includes an oscillator (108) having an associated temperature model (110). A frequency error (126) is derived from a wireless signal. The temperature model (110) is adjusted in response to the frequency error (126) and a temperature proximate the oscillator (108). Frequency error of the oscillator (108) is compensated using the adjusted temperature model. In another example, a frequency error is derived using a second oscillator within the wireless receiver (104).
摘要(中):
描述了用于补偿位置使能的无线设备(102)中的振荡器(108)的方法和装置。 在一个示例中,移动设备(102)包括用于接收无线信号的无线接收机(104)和用于接收GPS信号(120)的GPS接收机(112)。 移动设备(102)还包括具有相关温度模型(110)的振荡器(108)。 从无线信号导出频率误差(126)。 响应于频率误差(126)和靠近振荡器(108)的温度来调节温度模型(110)。 振荡器(108)的频率误差使用调整温度模型进行补偿。 在另一示例中,使用无线接收器(104)内的第二振荡器导出频率误差。