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公开(公告)号：EP1618672A2
公开(公告)日：2006-01-25
申请号：EP04760061.4
申请日：2004-04-20
申请人： MOTOROLA, INC.
IPC分类号： H04B1/06
CPC分类号： H03J1/0083 , H03J1/0033 , H03J1/0041 , H03J3/185 , H03J2200/02 , H03J2200/11
摘要： A multiple channel receiver (200) includes a communications receiver synthesizer (204) and at least one numerically controlled oscillator (NCO) (406) that produce local oscillator signals that are derived from a common reference oscillator (202). A DSP (212) and CPU (214) perform automatic frequency control (AFC) by adjustment of the reference oscillator (202) based upon a signal received by a receive channel using the local oscillator signal produced by the communications receiver synthesizer (204). The CPU (214) also provides a synchronous indication of adjustments to the reference oscillator (202) to control circuitry for the at least one NCO (406) so that the configuration of the NCO (406) can be altered so as to maintain a substantially constant frequency output during the adjustment of the reference oscillator (202).
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2.发明公开DETECTION AND REDUCTION OF PERIODIC JAMMING SIGNALS IN GPS RECEIVERS AND METHODS THEREFOR 有权GPS接收机中周期性干扰信号的检测与抑制及其方法
公开(公告)号：EP1629297A2
公开(公告)日：2006-03-01
申请号：EP04785686.9
申请日：2004-05-04
申请人： MOTOROLA, INC.
发明人： KING, Thomas, M. , RICKS, Thomas , MURRAY, David
摘要： A method for eliminating or reducing interference in a receiver, for example, interference in a satellite positioning system receiver caused by a co-located TDMA transmitter, including detecting (210) the presence of a jamming signal, generating a synchronous blanking signal (220), and reducing the jamming signal by blanking (230) the receiver with a blanking signal. In one embodiment, the jamming signal is detected in the receiver, for example, at a correlator output of a satellite positioning system receiver.
摘要翻译： 一种用于消除或减少接收机中的干扰的方法，例如由同位TDMA发射机引起的卫星定位系统接收机中的干扰，包括检测（210）干扰信号的存在，生成同步消隐信号（220） 以及通过用消隐信号消隐（230）接收器来减少干扰信号。 在一个实施例中，在接收机中例如在卫星定位系统接收机的相关器输出处检测干扰信号。
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3.发明公开GPS ASSISTANCE MESSAGES IN CELLULAR COMMUNICATIONS NETWORKS AND METHODS THEREFOR 审中-公开GPS辅助消息，在蜂窝通信网络及其方法
公开(公告)号：EP1362437A1
公开(公告)日：2003-11-19
申请号：EP02709432.5
申请日：2002-02-05
申请人： MOTOROLA, INC.
CPC分类号： G01S19/05 , G01S19/07 , G01S19/08 , G01S19/258 , H04B7/18554 , Y02D70/1242 , Y02D70/164 , Y02D70/446
摘要： GPS assistance message and data issue identifiers for transmission to GPS enabled mobile stations in cellular communications networks and methods therefore. The GPS data issue identifiers indicate whether GPS data, for example corresponding ephemeris and almanac data, stored at the mobile station requires updating. In the exemplary 3rd generation (W-CDMA/UMTS) architecture, the GPS assistance message is a System Information Block (SIB), and the GPS ephemeris data identifier and corresponding satellite identifier is encoded in a value tag included in a Master Information Block (MIB).
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4.发明授权DETECTION AND REDUCTION OF PERIODIC JAMMING SIGNALS IN GPS RECEIVERS AND METHODS THEREFOR 有权的检测和降低周期性干扰GPS接收机及其方法
公开(公告)号：EP1629297B1
公开(公告)日：2009-02-25
申请号：EP04785686.9
申请日：2004-05-04
申请人： MOTOROLA, INC.
发明人： KING, Thomas, M. , RICKS, Thomas , MURRAY, David
摘要： A method for eliminating or reducing interference in a receiver, for example, interference in a satellite positioning system receiver caused by a co-located TDMA transmitter, including detecting (210) the presence of a jamming signal, generating a synchronous blanking signal (220), and reducing the jamming signal by blanking (230) the receiver with a blanking signal. In one embodiment, the jamming signal is detected in the receiver, for example, at a correlator output of a satellite positioning system receiver.
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5.发明公开SATELLITE POSITIONING SYSTEM RECEIVER WITH REFERENCE OSCILLATOR CIRCUIT AND METHODS THEREFOR 有权参考振荡器电路及其方法卫星定位系统接收机
公开(公告)号：EP1436909A1
公开(公告)日：2004-07-14
申请号：EP02773674.3
申请日：2002-10-01
申请人： MOTOROLA, INC.
发明人： KING, Thomas, M.
IPC分类号： H04B7/00
CPC分类号： G01S19/235 , H03J7/02
摘要： A method in a location enabled mobile wireless receiver having an oscillator, including determining a change in cellular network based frequency error of the oscillator (250), based on a difference (230) between a cellular network based frequency error of the oscillator and a reference cellular network based frequency error (210) of the oscillator, determining a first frequency error of the oscillator by summing (250) a reference satellite positioning system receiver based oscillator frequency error (220) with the change in cellular network based frequency error of the oscillator.
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