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11. 发明申请

US20060245481A1 MATCHED FILTER FOR SCALABLE SPREAD SPECTRUM COMMUNICATIONS SYSTEMS 失效
标题翻译：用于可扩展频谱通信系统的匹配滤波器
公开(公告)号：US20060245481A1
公开(公告)日：2006-11-02
申请号：US11427256
申请日：2006-06-28
申请人： W. Dobson , Dirk Ostermiller , Sy Prestwich , Scott Bevan
发明人： W. Dobson , Dirk Ostermiller , Sy Prestwich , Scott Bevan
IPC分类号： H04B1/00
CPC分类号： H04J13/0022 , H04B1/7093 , H04B2201/70703 , H04B2201/70707
摘要： A spread spectrum communications system using long, scalable PN sequences to achieve variable communication rates using a low-complexity and scalable matched filter architecture to provide a large processing gain, robust recovery of multiple devices in long reach, high ambient-noise environments.
摘要翻译：一种使用长度可扩展的PN序列的扩展频谱通信系统，可使用低复杂度和可扩展的匹配滤波器架构实现可变通信速率，以提供大的处理增益，长距离多个设备的强大恢复，高环境噪声环境。

12. 发明授权

US07606288B2 Burst spread spectrum radio system and method for asset tracking and data telemetry 有权
标题翻译：突发扩频无线电系统和资产跟踪和数据遥测方法
公开(公告)号：US07606288B2
公开(公告)日：2009-10-20
申请号：US11140081
申请日：2005-05-27
申请人： Sy Prestwich , Scott Bevan , Dirk Ostermiller , K. Deric Eldredge
发明人： Sy Prestwich , Scott Bevan , Dirk Ostermiller , K. Deric Eldredge
IPC分类号： H04B1/00
CPC分类号： H04B1/7087 , G01C21/206 , G01S5/0221 , G01S5/06 , H04J13/107
摘要： A system for wireless asset tracking is disclosed. The system includes a plurality of mobile devices. Each mobile device performs two spreading operations with two distinct PN codes, a first PN code and a second PN code. Data is transmitted by each mobile device using a burst direct sequence spread spectrum radio signal. The system also includes at least three base stations. Each base station is configured to receive the burst direct sequence spread spectrum radio signals from the mobile devices which includes decoding the signals by first de-spreading with the second PN code and second de-spreading with the first PN code. Each base station is further configured to add a timestamp to each data packet received. A system for calculating the location of the mobile devices creates location information for each mobile device by calculating the time difference of arrival of received bursts for each base station.
摘要翻译：公开了一种用于无线资产跟踪的系统。该系统包括多个移动设备。每个移动设备使用两个不同的PN码，第一PN码和第二PN码来执行两个扩展操作。每个移动设备使用突发直接序列扩频无线电信号发送数据。该系统还包括至少三个基站。每个基站被配置为从移动设备接收突发直接序列扩频无线电信号，其包括通过用第二PN码进行第一解扩展和用第一PN码进行第二解扩展来对信号进行解码。每个基站还被配置为向接收到的每个数据分组添加时间戳。用于计算移动设备的位置的系统通过计算每个基站的接收脉冲串的到达时间差来创建每个移动设备的位置信息。

13. 发明申请

US20060268961A1 Burst spread spectrum radio system and method for asset tracking and data telemetry 有权
公开(公告)号：US20060268961A1
公开(公告)日：2006-11-30
申请号：US11140081
申请日：2005-05-27
申请人： Sy Prestwich , Scott Bevan , Dirk Ostermiller , K. Eldredge
发明人： Sy Prestwich , Scott Bevan , Dirk Ostermiller , K. Eldredge
IPC分类号： H04B1/00
CPC分类号： H04B1/7087 , G01C21/206 , G01S5/0221 , G01S5/06 , H04J13/107
摘要： A system for wireless asset tracking is disclosed. The system includes a plurality of mobile devices. Each mobile device performs two spreading operations with two distinct PN codes, a first PN code and a second PN code. Data is transmitted by each mobile device using a burst direct sequence spread spectrum radio signal. The system also includes at least three base stations. Each base station is configured to receive the burst direct sequence spread spectrum radio signals from the mobile devices which includes decoding the signals by first de-spreading with the second PN code and second de-spreading with the first PN code. Each base station is further configured to add a timestamp to each data packet received. A system for calculating the location of the mobile devices creates location information for each mobile device by calculating the time difference of arrival of received bursts for each base station.

14. 发明授权

US07092426B2 Matched filter for scalable spread spectrum communications systems 有权
标题翻译：可扩展扩频通信系统的匹配滤波器
公开(公告)号：US07092426B2
公开(公告)日：2006-08-15
申请号：US10670708
申请日：2003-09-24
申请人： W. Kurt Dobson , Dirk Ostermiller , Sy Prestwich , Scott Bevan
发明人： W. Kurt Dobson , Dirk Ostermiller , Sy Prestwich , Scott Bevan
IPC分类号： H04B1/69
CPC分类号： H04J13/0022 , H04B1/7093 , H04B2201/70703 , H04B2201/70707
摘要： A spread spectrum communications system uses long, scalable PN sequences to achieve variable communication rates. A low-complexity and scalable matched filter architecture is used to provide a large processing gain and robust recovery of multiple devices in long reach, high ambient-noise environments. The spread spectrum communications system includes a transmitter and a receiver. The receiver includes an RF receiver and a first matched filter receiving data from the RF receiver. A plurality of phase/frequency shifters receives a signal from the first matched filter. A plurality of second matched filters receive data from the plurality of phase/frequency shifters. An equalizer/decoder receives signals from the plurality of phase/frequency shifters.
摘要翻译：扩频通信系统使用长的可扩展的PN序列来实现可变的通信速率。低复杂度和可扩展的匹配滤波器架构用于在长距离，高环境噪声环境中提供大的处理增益和强大的多个器件的恢复。扩频通信系统包括发射机和接收机。接收机包括RF接收机和从RF接收机接收数据的第一匹配滤波器。多个相位/频率移位器从第一匹配滤波器接收信号。多个第二匹配滤波器从多个相位/频率移位器接收数据。均衡器/解码器从多个相位/频率移位器接收信号。

15. 发明授权

US06282177B1 Method and apparatus for dynamically controlling the bias current in a receiver in response to the transmitter power 失效
标题翻译：响应于发射机功率来动态地控制接收机中的偏置电流的方法和装置
公开(公告)号：US06282177B1
公开(公告)日：2001-08-28
申请号：US09034653
申请日：1998-03-04
申请人： Dirk Ostermiller , Sy Prestwich
发明人： Dirk Ostermiller , Sy Prestwich
IPC分类号： H04B5005
CPC分类号： H04W52/52 , H04B1/40
摘要： A method and apparatus for minimizing the power consumed by a low-noise amplifier in a receiver portion of a full duplex transceiver when the transmit signal power of the transceiver as presented to the low-noise amplifier exceeds the receive signal power and would further cause the low-noise amplifier to enter into a compression state thereby introducing distortion onto the receive signal. A transmit power control indicator designates a modified transmit power level for use by the transceiver. The transmit portion of the transceiver alters the transmit power level accordingly while the receiver portion of the transceiver monitors the change in the transmit portion and generates a bias control signal altering the bias level of the low noise amplifier to a level compatible with the modified transmit power level. Such a tracking of the bias current of the low noise amplifier both facilitates the use of lower-isolation duplexers and also reduces power consumption for portable transceivers.
摘要翻译：一种当所呈现给低噪声放大器的收发信机的发射信号功率超过接收信号功率时，使全双工收发器的接收机部分中的低噪声放大器消耗的功率最小化的方法和装置，并且将进一步导致低噪声放大器进入压缩状态，从而将失真引入到接收信号上。发射功率控制指示符指示被收发机使用的修改的发射功率电平。收发器的发射部分相应地改变发射功率电平，同时收发器的接收机部分监测发射部分的变化，并产生将低噪声放大器的偏置电平改变到与修改的发射功率兼容的电平的偏置控制信号水平。低噪声放大器的偏置电流的这种跟踪有助于使用较低隔离双工器并且还降低便携式收发器的功耗。

16. 发明授权

US06353414B1 Antenna for a portable information device 失效
标题翻译：天线用于便携式信息设备
公开(公告)号：US06353414B1
公开(公告)日：2002-03-05
申请号：US09605320
申请日：2000-06-27
申请人： Jeffrey L. Jones , Sy Prestwich , John M. Wheeler , David J. Moore , Steven Lo Forte , Brent D. Madsen , Kurt J. Stewart
发明人： Jeffrey L. Jones , Sy Prestwich , John M. Wheeler , David J. Moore , Steven Lo Forte , Brent D. Madsen , Kurt J. Stewart
IPC分类号： H01Q124
CPC分类号： H01Q1/2266 , G06F1/1626 , G06F1/1656 , G06F1/1698 , G06F2200/1632 , H01Q1/22 , H01Q1/244 , H01Q1/44
摘要： An apparatus and method of mounting an antenna in a portable information device (PID) are provided. The PID includes a housing having an elongated slot formed therein. A circuit board is disposed with the housing. An elongated antenna housing including a first end and a second end is received in the elongated slot. A conductive contact member is positioned within the elongated antenna housing, and an antenna member is positioned within the elongated antenna housing. The antenna member is electrically connected with the conductive contact member. A conductive connection clip is attached to the housing for providing an electrical connection between the conductive contact member and the circuit board. The conductive connection clip includes a first end portion and a second end portion. The second end portion of the conductive connection clip is operatively connected to the circuit board and the first end portion of the conductive connection clip contacts the conductive contact member positioned within the elongated antenna housing to allow signals to be transmitted from the antenna member to the circuit board and vice versa.
摘要翻译：提供了将天线安装在便携式信息装置（PID）中的装置和方法。 PID包括其中形成有细长槽的壳体。电路板与壳体一起设置。包括第一端和第二端的细长天线壳体容纳在细长槽中。导电接触构件定位在细长天线壳体内，并且天线构件定位在细长天线壳体内。天线构件与导电接触构件电连接。导电连接夹连接到壳体，用于在导电接触构件和电路板之间提供电连接。导电连接夹包括第一端部和第二端部。导电连接夹的第二端部可操作地连接到电路板，并且导电连接夹的第一端部接触位于细长天线壳体内的导电接触构件，以允许信号从天线构件传输到电路板，反之亦然。

17. 发明授权

US06469668B1 Method and apparatus for connection to a rotatable antenna 失效
标题翻译：用于连接到可旋转天线的方法和装置
公开(公告)号：US06469668B1
公开(公告)日：2002-10-22
申请号：US09488044
申请日：2000-01-20
申请人： Jeffrey L. Jones , Thomas A. Johnson , Steven Lo Forte , Sy Prestwich
发明人： Jeffrey L. Jones , Thomas A. Johnson , Steven Lo Forte , Sy Prestwich
IPC分类号： H01Q124
CPC分类号： H01Q1/2275 , H01Q1/084 , H01Q1/22 , H01Q1/2258 , H01Q3/06
摘要： A hinged or rotatable antenna working in conjunction with a ground plane element which discloses a coaxial cable connection that maintains electrical contact between the ground plane element and the coaxial cable shielding through the use of a compression retainer block or plate. Some embodiments of the present invention also disclose channel geometry for establishing and maintaining an electrical connection between cable shielding and a ground plate element.
摘要翻译：与接地平面元件结合工作的铰接或可旋转天线，其公开了通过使用压缩保持器块或板来保持接地平面元件和同轴电缆屏蔽层之间的电接触的同轴电缆连接。本发明的一些实施例还公开了用于建立和维持电缆屏蔽和接地板元件之间的电连接的通道几何形状。

18. 发明授权

US06262684B1 Stylus antenna 失效
标题翻译：触控笔天线
公开(公告)号：US06262684B1
公开(公告)日：2001-07-17
申请号：US09604713
申请日：2000-06-27
申请人： Kurt Stewart , Sy Prestwich , Jeffrey L. Jones , Steven Lo Forte
发明人： Kurt Stewart , Sy Prestwich , Jeffrey L. Jones , Steven Lo Forte
IPC分类号： H01Q124
CPC分类号： H01Q1/244 , G06F1/1626 , G06F1/1683 , G06F1/1698 , G06F3/03545 , G06F2200/1632 , H01Q1/10 , H01Q1/24
摘要： The present invention discloses antenna structures for portable digital devices that continuously receive radio signals in both the extended and the retracted antenna positions. In addition, the disclosed antenna structures tune the antenna based on the position of the antenna to achieve good impedance matching, which is particularly useful in reducing the noise and interference, while maximizing the available power for radiation from the portable digital devices. More specifically, a multiple position stylus antenna is disclosed that incorporates an antenna into a stylus for use with a Personal Digital Assistant (PDA). The stylus antenna uses one radiating element tuned for optimal performance in the extended position and synthesizes a compensation impedance to match the impedance of the feeding transmission line in the retracted position.
摘要翻译：本发明公开了一种便携式数字设备的天线结构，其在延伸天线位置和缩回天线位置中连续地接收无线电信号。此外，所公开的天线结构基于天线的位置来调谐天线，以实现良好的阻抗匹配，这在减少噪声和干扰方面特别有用，同时最大化来自便携式数字设备的辐射的可用功率。更具体地，公开了一种将天线结合到用于与个人数字助理（PDA）一起使用的触针的多位置触针天线。触针天线使用一个辐射元件调谐到扩展位置的最佳性能，并且合成补偿阻抗以匹配馈送传输线在缩回位置的阻抗。

19. 发明授权

US06191743B1 Multiple antenna ports for electronic devices 有权
标题翻译：用于电子设备的多个天线端口
公开(公告)号：US06191743B1
公开(公告)日：2001-02-20
申请号：US09543037
申请日：2000-04-05
申请人： Jeffrey L. Jones , Sy Prestwich , Steven LoForte , Kurt Stewart , David Moore , John M. Wheeler
发明人： Jeffrey L. Jones , Sy Prestwich , Steven LoForte , Kurt Stewart , David Moore , John M. Wheeler
IPC分类号： H01Q124
CPC分类号： H01Q21/29 , H01Q1/24
摘要： An apparatus for facilitating the various placement of an antenna within a wireless transceiver device such as a wireless personal data assistant is presented. Such an apparatus enables the relocation of an antenna device in accordance with a user preferred configuration. The relocation of the antenna device does not effect the overall performance and does not require further termination of unused antenna configurations. Such an apparatus facilitates the preferred placement of an antenna in accordance with a user's hand preference (e.g., right handedness verses left handedness).
摘要翻译：提出了一种用于促进天线在诸如无线个人数据助理之类的无线收发器设备内的各种放置的装置。这种装置能够根据用户优选的配置来重新定位天线装置。天线设备的重定位不会影响整体性能，并且不需要进一步终止未使用的天线配置。这样的装置有助于根据用户的手偏好（例如，右手性与左旋度）优选地放置天线。

20. 发明授权

US07796675B1 Burst spread spectrum radio system and method for site monitoring 有权
标题翻译：突发扩频无线电系统和现场监测方法
公开(公告)号：US07796675B1
公开(公告)日：2010-09-14
申请号：US12046950
申请日：2008-03-12
申请人： David Carter , Sy Prestwich , James R. Baker , Scott Bevan
发明人： David Carter , Sy Prestwich , James R. Baker , Scott Bevan
IPC分类号： H04B1/00
CPC分类号： H04J13/102 , G08B25/007 , G08B25/009 , G08B25/10 , H04J13/0022
摘要： A device for site monitoring is disclosed. The device may include a communication interface configured to receive site monitoring data from a site monitoring system. The communication interface may also be configured to wirelessly transmit the site monitoring data to a base station. The site monitoring data may include a device identification. The device also may include a processor and memory. The memory also may include two pseudonoise (PN) codes, namely a first PN code and a second PN code. The site monitoring data may be received from the site monitoring system. The site monitoring data may be spread using the first PN code to provide first spread site monitoring data. The first spread site monitoring data may be spread using the second PN code to provide second spread site monitoring data. The second spread site monitoring data may be transmitted using a burst direct sequence spread spectrum radio signal.
摘要翻译：公开了一种用于现场监控的设备。该设备可以包括被配置为从站点监视系统接收站点监视数据的通信接口。通信接口还可以被配置为将站点监视数据无线地发送到基站。站点监视数据可以包括设备标识。该设备还可以包括处理器和存储器。存储器还可以包括两个伪噪声（PN）码，即第一PN码和第二PN码。站点监视数据可以从站点监视系统接收。可以使用第一PN码来传播站点监视数据，以提供第一扩散站监视数据。可以使用第二PN码来扩展第一扩散站点监视数据，以提供第二扩散站点监视数据。可以使用突发直接序列扩频无线电信号来发送第二扩展站点监视数据。

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