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公开(公告)号:US07062240B2
公开(公告)日:2006-06-13
申请号:US10421002
申请日:2003-04-22
IPC分类号: H04B1/18
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).
摘要翻译: 多通道接收器(200)包括通信接收机合成器(204)和产生从公共参考振荡器(202)导出的本地振荡器信号的至少一个数控振荡器(NCO)(406)。 DSP(212)和CPU(214)通过使用由通信接收机合成器(204)产生的本地振荡器信号由接收信道接收的信号来调整参考振荡器(202)来执行自动频率控制(AFC)。 CPU(214)还向参考振荡器(202)提供对于至少一个NCO(406)的控制电路的调整的同步指示,使得可以改变NCO(406)的配置,以便保持基本上 在调整参考振荡器(202)期间的恒定频率输出。
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公开(公告)号:US06795768B2
公开(公告)日:2004-09-21
申请号:US10370397
申请日:2003-02-20
IPC分类号: G01C2130
CPC分类号: G01C21/20 , G01S5/0027 , G01S19/53 , G06F17/3087 , H04L67/18
摘要: An object selection apparatus (100) has a geo-location processor (108) that determines the location of a device (120) at the time of an input by a user. The object selection apparatus (100) also has a bearing determination processor (104) that determines a bearing from the device (120) at the time of the user input. The object selection apparatus (100) also has a geo-content retrieval system (118) that retries information that relates to a set of objects that correspond to the location and bearing of the device (120) that was determined at the time of the input.
摘要翻译: 对象选择装置(100)具有在用户输入时确定设备(120)的位置的地理位置处理器(108)。 对象选择装置(100)还具有在用户输入时确定来自装置(120)的方位的方位确定处理器(104)。 对象选择装置(100)还具有地理内容检索系统(118),其重试与在输入时确定的设备(120)的位置和方位相对应的一组对象相关的信息 。
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公开(公告)号:US07184745B2
公开(公告)日:2007-02-27
申请号:US10356901
申请日:2003-02-03
IPC分类号: H04M11/04
CPC分类号: G01S19/34 , H04M1/72566 , H04M1/72569 , H04M1/72572 , H04M2250/10 , H04M2250/12
摘要: A method and apparatus that monitors at least one environmental characteristic associated with a location of a wireless signal receiver (102). A determination is then made as to whether the wireless signal receiver (102) is likely to receive a wirelessly transmitted signal at its location. The determination is based at least in part upon the monitored at least one environmental characteristic that is associated with the location of the wireless signal receiver (102). The performance of the wireless signal receiver (102) is then improved based upon determining if the wireless signal receiver (102) is likely to receive a wirelessly transmitted signal.
摘要翻译: 一种监测与无线信号接收机(102)的位置相关联的至少一个环境特性的方法和装置。 然后确定无线信号接收机(102)是否可能在其位置接收无线发送的信号。 该确定至少部分地基于与无线信号接收器(102)的位置相关联的所监视的至少一个环境特性。 然后,基于确定无线信号接收机(102)是否可能接收无线发送的信号来改进无线信号接收机(102)的性能。
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4.
公开(公告)号:US07136680B2
公开(公告)日:2006-11-14
申请号:US10403231
申请日:2003-03-31
IPC分类号: H04M1/00
CPC分类号: G01S19/34 , H04W52/0254 , Y02D70/164
摘要: A portable wireless transceiver (104) includes a receiver (206) for monitoring transmissions from neighboring transceivers (106A and 106B) to select a transceiver to use for communications. The portable wireless transceiver (104) further has a motion detector (204) for determining whether or not the portable wireless transceiver (104) is moving. If the portable wireless transceiver (104) is determined to not be moving, a processor (202) alters a schedule for monitoring of neighboring transceivers (106A and 106B) so that the monitoring is performed less frequently, thereby reducing power consumption by the portable wireless transceiver (104).
摘要翻译: 便携式无线收发器(104)包括用于监视来自相邻收发器(106A和106B)的传输的接收机(206),以选择用于通信的收发器。 便携式无线收发器(104)还具有用于确定便携式无线收发器(104)是否正在移动的运动检测器(204)。 如果便携式无线收发器(104)被确定为不移动,则处理器(202)改变用于监视相邻收发器(106A和106B)的调度,使得监视更不频繁地执行,从而降低由 便携式无线收发器(104)。
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