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公开(公告)号：US08184748B2
公开(公告)日：2012-05-22
申请号：US12474814
申请日：2009-05-29
IPC分类号： H04L27/06
CPC分类号： H04L7/042 , H04L7/046 , H04L27/0014 , H04L27/16 , H04L27/2657 , H04L2027/0026 , H04L2027/0048 , H04L2027/0065 , H04L2027/0095
摘要： An RF receiver comprises a signal processor arranged to perform a method of decoding data contained within a signal that comprises a set of slots, at least one said slot comprising a preamble portion and a payload portion and being transmitted at a predetermined transmission frequency. The signal processor is arranged to perform a first process to derive timing data from the preamble portion and perform a second process to extract information from the payload portion, the second process being triggered from said timing data derived from the first process. The preamble portion comprises at least a first sequence of data and a second sequence of data, and the second sequence is the inverse of the first sequence. In preferred embodiments the first process comprises identifying a transition between said first and second sequences of data and deriving said timing data from the identified transition.
摘要翻译： RF接收机包括信号处理器，被配置为执行解码包含在包括一组时隙的信号中的数据的方法，所述至少一个所述时隙包括前导码部分和有效载荷部分并且以预定的传输频率发送。 信号处理器被布置为执行第一处理以从前导码部分导出定时数据，并执行从有效载荷部分提取信息的第二处理，第二处理是从从第一处理导出的所述定时数据触发的。 前导部分包括至少第一数据序列和第二数据序列，第二序列是第一序列的倒数。 在优选实施例中，第一过程包括识别所述第一和第二数据序列之间的转换并从所识别的转换中导出所述定时数据。
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公开(公告)号：US08130681B2
公开(公告)日：2012-03-06
申请号：US12474826
申请日：2009-05-29
IPC分类号： H04B7/005
CPC分类号： H04J3/0605 , H04W56/0045 , H04W92/10
摘要： The data transmitted from a first station is transmitted at a first data rate. The data transmitted from a second station is transmitted at a second data rate. The second data rate is lower than the first data rate. In view of both the difference in data rates and the synchronization between radio stations, a separate synchronization word is not required to be sent from the second station to the first station on the uplink portion; instead, and because the uplink slots of a given frame are synchronized between transceiving stations, the start of the uplink payload slot can comprise signalling information which simply acts to signify the start of transmission of uplink data from the second station.
摘要翻译： 以第一数据速率发送从第一站发送的数据。 以第二数据速率发送从第二站发送的数据。 第二数据速率低于第一数据速率。 考虑到数据速率的差异和无线电台之间的同步，不需要单独的同步字从第二站发送到上行链路部分上的第一站; 相反，由于给定帧的上行链路时隙在收发站之间同步，所以上行链路有效载荷时隙的开始可以包括简单地用于表示来自第二站的上行链路数据的传输开始的信令信息。
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公开(公告)号：US07593711B2
公开(公告)日：2009-09-22
申请号：US11131847
申请日：2005-05-18
申请人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Stroud , Timothy David Howe , Gerard Edward Smith
发明人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Stroud , Timothy David Howe , Gerard Edward Smith
IPC分类号： H04B1/16
CPC分类号： G01S13/825 , H04W52/0245 , Y02D70/00
摘要： A vehicle locating unit with improved power management. A receiver receives a signal from a network of communication sources. A signal strength monitoring subsystem determines which of the communication sources are transmitting the strongest signals. A power management subsystem is responsive to the signal strength monitoring subsystem and is configured to alternatively enter sleep and wake-up modes, synchronize the wake-up mode to the communication source transmitting the strongest signal, and test the signal strength of at least one additional communication source according to a predefined sequence.
摘要翻译： 具有改进电源管理的车辆定位单元。 接收器从通信源网络接收信号。 信号强度监视子系统确定哪个通信源正在发送最强的信号。 功率管理子系统响应于信号强度监控子系统并被配置为交替地进入睡眠和唤醒模式，将唤醒模式同步到发送最强信号的通信源，并测试至少一个附加信号的信号强度 通信源。
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公开(公告)号：US07853218B2
公开(公告)日：2010-12-14
申请号：US12462949
申请日：2009-08-12
申请人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Stroud , Timothy David Howe , Gerard Edward Smith
发明人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Stroud , Timothy David Howe , Gerard Edward Smith
IPC分类号： H04B17/00
CPC分类号： G01S13/825 , H04W52/0245 , Y02D70/00
摘要： A method of checking messages from a network of communication sources includes initially testing the signal strength of a plurality of communication sources, storing the identity of the communication sources with the two strongest signals, and alternatively entering a sleep mode and a wake-up mode, the wake-up mode synchronized to the communication source with the strongest signal. The method further includes testing the signal strength of one additional communication source, switching synchronization to the additional communication source if said source presents a signal stronger than the signal of a stored communication source with the strongest signal, and replacing the identity of any stored communication source if an additional communication sources tested in sequence presents a signal stronger than the signal of said stored communication source.
摘要翻译： 检查来自通信源网络的消息的方法包括：首先测试多个通信源的信号强度，将通信源的身份与两个最强的信号进行存储，或者进入睡眠模式和唤醒模式， 唤醒模式与通信源同步，具有最强的信号。 该方法还包括测试一个附加通信源的信号强度，如果所述源呈现比具有最强信号的存储的通信源的信号更强的信号，则将同步切换到附加通信源，并且替换任何存储的通信源的标识 如果依次测试的另外的通信源提供比所述存储的通信源的信号更强的信号。
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公开(公告)号：US20090305640A1
公开(公告)日：2009-12-10
申请号：US12462949
申请日：2009-08-12
申请人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Shroud , Timothy David Howe , Gerard Edward Smith
发明人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Shroud , Timothy David Howe , Gerard Edward Smith
IPC分类号： H04B17/00
CPC分类号： G01S13/825 , H04W52/0245 , Y02D70/00
摘要： A method of checking messages from a network of communication sources includes initially testing the signal strength of a plurality of communication sources, storing the identity of the communication sources with the two strongest signals, and alternatively entering a sleep mode and a wake-up mode, the wake-up mode synchronized to the communication source with the strongest signal. The method further includes testing the signal strength of one additional communication source, switching synchronization to the additional communication source if said source presents a signal stronger than the signal of a stored communication source with the strongest signal, and replacing the identity of any stored communication source if an additional communication sources tested in sequence presents a signal stronger than the signal of said stored communication source.
摘要翻译： 检查来自通信源网络的消息的方法包括：首先测试多个通信源的信号强度，存储通信源的身份与两个最强信号，或者进入睡眠模式和唤醒模式， 唤醒模式与通信源同步，具有最强的信号。 该方法还包括测试一个附加通信源的信号强度，如果所述源呈现比具有最强信号的存储的通信源的信号更强的信号，则将同步切换到附加通信源，并且替换任何存储的通信源的标识 如果依次测试的另外的通信源提供比所述存储的通信源的信号更强的信号。
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公开(公告)号：US20090304127A1
公开(公告)日：2009-12-10
申请号：US12474814
申请日：2009-05-29
CPC分类号： H04L7/042 , H04L7/046 , H04L27/0014 , H04L27/16 , H04L27/2657 , H04L2027/0026 , H04L2027/0048 , H04L2027/0065 , H04L2027/0095
摘要： An RF receiver comprises a signal processor arranged to perform a method of decoding data contained within a signal that comprises a set of slots, at least one said slot comprising a preamble portion and a payload portion and being transmitted at a predetermined transmission frequency. The signal processor is arranged to perform a first process to derive timing data from the preamble portion and perform a second process to extract information from the payload portion, the second process being triggered from said timing data derived from the first process. The preamble portion comprises at least a first sequence of data and a second sequence of data, and the second sequence is the inverse of the first sequence. In preferred embodiments the first process comprises identifying a transition between said first and second sequences of data and deriving said timing data from the identified transition.
摘要翻译： RF接收机包括信号处理器，被配置为执行解码包含在包括一组时隙的信号中的数据的方法，所述至少一个所述时隙包括前导码部分和有效载荷部分并且以预定的传输频率发送。 信号处理器被布置为执行第一处理以从前导码部分导出定时数据，并执行从有效载荷部分提取信息的第二处理，第二处理是从从第一处理导出的所述定时数据触发的。 前导部分包括至少第一数据序列和第二数据序列，第二序列是第一序列的倒数。 在优选实施例中，第一过程包括识别所述第一和第二数据序列之间的转换并从所识别的转换中导出所述定时数据。
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公开(公告)号：US20090303981A1
公开(公告)日：2009-12-10
申请号：US12474826
申请日：2009-05-29
CPC分类号： H04J3/0605 , H04W56/0045 , H04W92/10
摘要： The data transmitted from a first station is transmitted at a first data rate. The data transmitted from a second station is transmitted at a second data rate. The second data rate is lower than the first data rate. In view of both the difference in data rates and the synchronisation between radio stations, a separate synchronisation word is not required to be sent from the second station to the first station on the uplink portion; instead, and because the uplink slots of a given frame are synchronised between transceiving stations, the start of the uplink payload slot can comprise signalling information which simply acts to signify the start of transmission of uplink data from the second station.
摘要翻译： 以第一数据速率发送从第一站发送的数据。 以第二数据速率发送从第二站发送的数据。 第二数据速率低于第一数据速率。 考虑到数据速率的差异和无线电台之间的同步，不需要单独的同步字从第二站发送到上行链路部分上的第一站; 相反，由于给定帧的上行链路时隙在收发站之间同步，所以上行链路有效载荷时隙的开始可以包括简单地用于表示来自第二站的上行链路数据的传输开始的信令信息。
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公开(公告)号：US07511606B2
公开(公告)日：2009-03-31
申请号：US11131846
申请日：2005-05-18
申请人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Stroud , Timothy David Howe , Gerard Edward Smith , Colin Richard Smithers
发明人： Frank Romano , Sampath Krishna , Son Nguyen , Jesse Rhodes , Philip Grahame Crewe , Daniel Jonathan Finchley Cletheroe , Mark Marsden , Steven Walter Greendale , Nigel James Watson , Ian Christopher Stroud , Timothy David Howe , Gerard Edward Smith , Colin Richard Smithers
IPC分类号： B60R25/10
CPC分类号： B60R25/33 , B60R25/102
摘要： A vehicle locating unit with a receiver for receiving a signal from a network of communication sources, a transponder activated when a communication source sends a message to the receiver, and a power supply regulating circuit for regulating a nominal input voltage and powering the receiver and the transponder. A protection circuit is responsive to an injected input voltage and configured to clamp the injected (high level) input voltage at a predetermined maximum voltage.
摘要翻译： 一种车辆定位单元，具有用于从通信源的网络接收信号的接收器，当通信源向接收器发送消息时被激活的应答器，以及用于调节标称输入电压并为接收器供电的电源调节电路， 转发器 保护电路响应于注入的输入电压并被配置为将注入的（高电平）输入电压钳位在预定的最大电压。
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