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公开(公告)号：US5598427A
公开(公告)日：1997-01-28
申请号：US782345
申请日：1991-10-24
IPC分类号： G08B25/10 , H04B1/7075 , H04B1/7077 , H04B1/69
CPC分类号： H04B1/7075 , G08B25/10 , H04B1/70757 , H04B1/7077 , H04B1/70756 , H04B2201/70715
摘要： A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an oscillator coupled to a microprocessor with chip code generation means, preamble register, address register and data register. The spread spectrum receiver acquires synchronization of the spread spectrum signal using a microprocessor coupled to the quieting, signal strength or baseband output of the receiver, with a two step algorithm. The steps comprise achieving a coarse lock and a fine lock to the spread spectrum signal.
摘要翻译： 一种使用扩频发射机，快速频移键控，扩频接收机和带显示器的计算机的无线报警系统。 扩频发射机包括耦合到具有码片生成装置的微处理器的振荡器，前同步码寄存器，地址寄存器和数据寄存器。 扩展频谱接收机利用与接收机的静音，信号强度或基带输出耦合的微处理器，利用两步算法获取扩频信号的同步。 这些步骤包括对扩展频谱信号实现粗略锁定和精细锁定。
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公开(公告)号：US5095493A
公开(公告)日：1992-03-10
申请号：US569682
申请日：1990-08-20
IPC分类号： G08B25/10 , H04B1/7075 , H04B1/7077
CPC分类号： H04B1/7075 , G08B25/10 , H04B1/70757 , H04B1/7077 , H04B1/70756 , H04B2201/70715
摘要： A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an oscillator coupled to a microprocessor with chip code generation means, preamble register, address register and data register. The spread spectrum receiver acquires synchronization of the spread spectrum signal using a microprocessor coupled to the quieting, signal strength or baseband output of the receiver, with a two step algorithm. The steps comprise achieving a coarse lock and a fine lock to the spread spectrum signal.
摘要翻译： 一种使用扩频发射机，快速频移键控，扩频接收机和带显示器的计算机的无线报警系统。 扩频发射机包括耦合到具有码片生成装置的微处理器的振荡器，前同步码寄存器，地址寄存器和数据寄存器。 扩展频谱接收机利用与接收机的静音，信号强度或基带输出耦合的微处理器，利用两步算法获取扩频信号的同步。 这些步骤包括对扩展频谱信号实现粗略锁定和精细锁定。
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公开(公告)号：US5067136A
公开(公告)日：1991-11-19
申请号：US551815
申请日：1990-07-12
IPC分类号： G08B25/10 , H04B1/7075 , H04B1/7077
CPC分类号： H04B1/7075 , G08B25/10 , H04B1/7077 , H04B1/70756 , H04B2201/70715
摘要： A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an oscillator coupled to a microprocessor with chip code generation means, preamble register, address register and data register. The spread spectrum receiver acquires synchronization of the spread spectrum signal using a microprocessor coupled to the quieting, signal strength or baseband output of the receiver, with a two step algorithm. The steps comprise achieving a coarse lock and a fine lock to the spread spectrum signal.
摘要翻译： 一种使用扩频发射机，快速频移键控，扩频接收机和带显示器的计算机的无线报警系统。 扩频发射机包括耦合到具有码片生成装置的微处理器的振荡器，前同步码寄存器，地址寄存器和数据寄存器。 扩展频谱接收机利用与接收机的静音，信号强度或基带输出耦合的微处理器，利用两步算法获取扩频信号的同步。 这些步骤包括对扩展频谱信号实现粗略锁定和精细锁定。
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公开(公告)号：US4977577A
公开(公告)日：1990-12-11
申请号：US266461
申请日：1988-11-02
IPC分类号： G08B25/10 , H04B1/7075 , H04B1/7077
CPC分类号： H04B1/7075 , G08B25/10 , H04B1/70757 , H04B1/7077 , G08B25/007 , H04B1/70756 , H04B2201/70715
摘要： A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an oscillator coupled to a microprocessor with chip code generation means, preamble register, address register and data register. The spread spectrum receiver acquires synchronization of the spread spectrum signal using a microprocessor coupled to the quieting, signal strength or baseband output of the receiver, with a two step algorithm. The steps comprise achieving a coarse lock and a fine lock to the spread spectrum signal.
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公开(公告)号：US4799062A
公开(公告)日：1989-01-17
申请号：US42838
申请日：1987-04-27
CPC分类号： G01S5/0284 , G01S5/0009 , G01S5/02 , G01S5/0215 , H04B2201/70715
摘要： A method and apparatus for radio position determination is provided including an unknown position transmitter for transmitting a radio wave having compensation for multipath, a plurality of base repeaters having a synchronized pulse for time reference, for receiving the radio wave emitted by the unknown position transmitter and for determining the relative times-of-arrival of the radio wave with respect to the synchronized pulse, and a central monitoring station coupled to the base repeaters for computing from the locations of the base repeaters and from the measured times-of-arrival, a coarse-position fix of the unknown-position transmitter. The system may include a mobile reference transceiver located within the coarse-position fix, for transmitting a reference signal, wherein the central monitoring station generates a differential position from the reference signal and the radio wave for guiding the mobile reference transceiver to the unknown position transmitter.
摘要翻译： 提供了一种用于无线电位置确定的方法和装置，包括用于发送具有多路径补偿的无线电波的未知位置发射机，具有用于时间参考的同步脉冲的多个基本中继器，用于接收由未知位置发射机发射的无线电波; 用于确定无线电波相对于同步脉冲的相对到达时间，以及耦合到基本转发器的中央监控站，用于从基本转发器的位置和从测量的到达时间开始计算， 未知位置变送器的粗位置固定。 该系统可以包括位于粗定位置中的移动参考收发器，用于发送参考信号，其中中央监控站从参考信号和无线电波生成差分位置，以将移动参考收发器引导到未知位置发送器 。
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公开(公告)号：US06335953B1
公开(公告)日：2002-01-01
申请号：US09432258
申请日：1999-11-02
IPC分类号： H04L2705
CPC分类号： H04J13/00 , H03J1/0091 , H04B1/713 , H04B1/715 , H04B2001/7152 , H04B2001/7154 , H04L7/041
摘要： A method utilizing intentionally generated in-band frequency harmonics to compensate for frequency error and frequency drift in a voltage controlled oscillator of a receiver, thereby eliminating the frequency synthesizer and RF divider required in conventional designs. The method includes modulating the intentionally generated frequency in a predetermined manner so that a receiver can identify the intentionally generated frequency and includes the use of plural frequency harmonics for use in a curve fitting technique to correct frequency error in the voltage controlled oscillator.
摘要翻译： 一种利用有意产生的带内频率谐波来补偿接收机的压控振荡器中的频率误差和频率漂移的方法，从而消除了常规设计中所需的频率合成器和RF分频器。 该方法包括以预定方式调制有意产生的频率，使得接收机可以识别有意产生的频率，并且包括使用多个频率谐波用于曲线拟合技术以校正压控振荡器中的频率误差。
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7.发明申请ENHANCED WIRELESS PACKET DATA COMMUNICATION SYSTEM, METHOD, AND APPARATUS APPLICABLE TO BOTH WIDE AREA NETWORKS AND LOCAL AREA NETWORKS 有权增强的无线数据包数据通信系统，方法和装置适用于两个区域网络和本地区域网络公开(公告)号：US20090103509A1
公开(公告)日：2009-04-23
申请号：US12340272
申请日：2008-12-19
申请人： H. Britton Sanderford, JR. , Robert E. Rouquette , Gary A. Naden , Marc L. Reed , Gordon J. Boudreaux , Michael R. Brown
发明人： H. Britton Sanderford, JR. , Robert E. Rouquette , Gary A. Naden , Marc L. Reed , Gordon J. Boudreaux , Michael R. Brown
IPC分类号： H04J1/00
CPC分类号： H03L7/08 , H03B21/00 , H04L5/06 , H04L5/16 , H04L25/061 , H04L25/4902 , H04L25/4921 , H04L27/12 , H04L27/2331 , H04L27/32 , H04L27/34 , H04L27/3433 , H04L27/3483 , H04L27/364 , H04L27/38 , H04L27/3845 , H04W36/08 , H04W72/0426
摘要： A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications.
摘要翻译： 一种蜂窝式无线分组数据通信系统，其包含向仅接收基站发送的仅发送端点设备。 该系统被配置为允许具有比常规双向蜂窝系统所需的数量少的基站的大面积覆盖（例如，大都市区域）。 基站覆盖区被配置为重叠，允许在多个基站处接收分组。 数据集中器解决冗余接收的消息。 该网络可配置为WAN，LAN或两者的组合。 使用新的调制技术（例如，16QAM子调制以及7FSK调制），使得可以在发射机和接收机中使用低成本组件，同时实现成功性能的突出概率。 端点设备是电池供电的，因此设计用于低功耗和多年电池寿命。 该系统用于各种应用，包括远程监控和移动通信。
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公开(公告)号：US6111911A
公开(公告)日：2000-08-29
申请号：US485007
申请日：1995-06-07
IPC分类号： H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7097 , H04B1/71
CPC分类号： H04B1/70752 , H04B1/707 , H04B1/70755 , H04B1/70775 , H04B1/708 , H04B1/7097 , H04B1/7101
摘要： A system and method for receiving direct sequence spread spectrum transmissions with both chip code and frequency uncertainty including a parallel frequency acquisition technique for increasing receiver sensitivity and increasing process gain while reducing a preamble duration required for spread spectrum acquisition. The system and method include techniques for reducing effects of jamming and impulse noise on receiver performance via enhanced antenna diversity by constructively combining received signals. Further, techniques are provided which compensate for chip code alignment drift, providing an associated transmitter maintains carrier and chip code coherence, by comparing received signal energies at varying chip code alignments. These techniques enable the use of lower cost frequency setting crystals in both the receiver and transmitter as well as provide for system operation over a wider temperature range.
摘要翻译： 一种用于接收具有芯片码和频率不确定性的直接序列扩展频谱传输的系统和方法，包括用于增加接收机灵敏度并增加处理增益的并行频率采集技术，同时减少扩频获取所需的前导码持续时间。 该系统和方法包括通过结构化地组合接收信号，通过增强的天线分集来减少干扰和脉冲噪声对接收机性能的影响的技术。 此外，提供了补偿芯片码对准漂移的技术，通过比较在变化的码片对准处的接收信号能量，提供相关发射机维持载波和码片相干性。 这些技术使得能够在接收机和发射机中使用较低成本的频率设置晶体，并且在更宽的温度范围内提供系统操作。
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公开(公告)号：US06031883A
公开(公告)日：2000-02-29
申请号：US931416
申请日：1997-09-16
CPC分类号： H04J13/00 , H03J1/0091 , H04B1/713 , H04B1/715 , H04B2001/7152 , H04B2001/7154 , H04L7/041
摘要： A method utilizing intentionally generated in-band frequency harmonics to compensate for frequency error and frequency drift in a voltage controlled oscillator of a receiver, thereby eliminating the frequency synthesizer and RF divider required in conventional designs. The method includes modulating the intentionally generated frequency in a predetermined manner so that a receiver can identify the intentionally generated frequency and includes the use of plural frequency harmonics for use in a curve fitting technique to correct frequency error in the voltage controlled oscillator.
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10.发明授权Enhanced wireless packet data communication system, method, and apparatus applicable to both wide area networks and local area networks 有权适用于广域网和局域网的增强型无线分组数据通信系统，方法和装置公开(公告)号：US07477694B2
公开(公告)日：2009-01-13
申请号：US10662530
申请日：2003-09-16
申请人： H. Britton Sanderford, Jr. , Robert E. Rouquette , Gary A. Naden , Marc L. Reed , Gordon J. Boudreaux , Michael R. Brown
发明人： H. Britton Sanderford, Jr. , Robert E. Rouquette , Gary A. Naden , Marc L. Reed , Gordon J. Boudreaux , Michael R. Brown
CPC分类号： H03L7/08 , H03B21/00 , H04L5/06 , H04L5/16 , H04L25/061 , H04L25/4902 , H04L25/4921 , H04L27/12 , H04L27/2331 , H04L27/32 , H04L27/34 , H04L27/3433 , H04L27/3483 , H04L27/364 , H04L27/38 , H04L27/3845 , H04W36/08 , H04W72/0426
摘要： A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications.
摘要翻译： 一种蜂窝式无线分组数据通信系统，其包含向仅接收基站发送的仅发送端点设备。 该系统被配置为允许具有比常规双向蜂窝系统所需的数量少的基站的大面积覆盖（例如，大都市区域）。 基站覆盖区被配置为重叠，允许在多个基站处接收分组。 数据集中器解决冗余接收的消息。 该网络可配置为WAN，LAN或两者的组合。 使用新的调制技术（例如，16QAM子调制以及7FSK调制），使得可以在发射机和接收机中使用低成本组件，同时实现成功性能的突出概率。 端点设备是电池供电的，因此设计用于低功耗和多年电池寿命。 该系统用于各种应用，包括远程监控和移动通信。
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