Direct sequence spread spectrum method, computer-based product,
apparatus and system tolerant to frequency reference offset
    1.
    发明授权
    Direct sequence spread spectrum method, computer-based product, apparatus and system tolerant to frequency reference offset 失效
    直接序列扩频方法,基于计算机的产品,装置和系统容忍频率参考偏移

    公开(公告)号:US5999561A

    公开(公告)日:1999-12-07

    申请号:US929891

    申请日:1997-09-15

    IPC分类号: H04B1/707

    CPC分类号: H04B1/707

    摘要: A method, apparatus, computer-based product and system employs a digital receiver (or transceiver) to receive, digitize and process a direct sequence spread spectrum signal using efficient, low-cost digital signal processing components. A radio front end portion of the receiver receives and digitizes the signal, and a digital signal processing portion downconverts and despreads the signal by applying a pseudorandom noise (PN) code, used at a transmitter to spread a data signal contained in the direct sequence spread spectrum signal, to the received signal. In order to initially align, and maintain alignment of, the PN code with the direct sequence spread spectrum signal, a timing and state control mechanism is included that provides time reference correction information to the signal processing components of the receiver. This time reference correction information allows the receiver to be compatible with transmitters using inaccurate frequency references which impart a significant frequency ambiguity in the received signal. Additional features include computer-based synchronization methods and mechanisms suitable for use for low performance digital signal processors and employ power management mechanisms that enable long-term operation using battery power. The power management mechanisms enable the receiver to operate in a network setting, over the course of multiple years off battery power, with similar receivers, transmitters and transceiver that communicate with one another using direct sequence spread spectrum signals.

    摘要翻译: 一种方法,装置,基于计算机的产品和系统使用数字接收机(或收发器)来使用有效的低成本数字信号处理组件来接收,数字化和处理直接序列扩频信号。 接收机的无线电前端部分接收并数字化该信号,并且数字信号处理部分通过应用在发射机处使用的伪随机噪声(PN)码来对信号进行下变频和解扩,以扩展包含在直接序列扩展中的数据信号 频谱信号,到接收信号。 为了初始对准和保持PN码与直接序列扩频信号的对准,包括向接收机的信号处理部件提供时间基准校正信息的定时和状态控制机制。 该时间参考校正信息允许接收机与使用不准确的频率参考的发射机兼容,这在接收信号中赋予显着的频率模糊。 附加功能包括适用于低性能数字信号处理器的基于计算机的同步方法和机制,并采用使用电池电源进行长期运行的电源管理机制。 功率管理机制使得接收机能够使用类似的接收机,发射器和收发器在多年的关闭电池电力的过程中在使用直接序列扩频信号彼此通信的网络设置中进行操作。

    Method, system, apparatus, and computer program product for communications relay
    5.
    发明授权
    Method, system, apparatus, and computer program product for communications relay 有权
    通信继电器的方法,系统,装置和计算机程序产品

    公开(公告)号:US07706745B2

    公开(公告)日:2010-04-27

    申请号:US11293313

    申请日:2005-12-05

    IPC分类号: H04B7/15

    摘要: A method, system, apparatus, and computer program product for relaying packet information from an Out of Range Device (ORD) to a communications tower. The method includes transmitting a message from the ORD. The message is recognizable by a transceiver device as a message to be repeated. The message is stored in the transceiver device which also measures a received signal quality of the message, and relays the message after delaying for a time interval inversely proportional to received signal quality.

    摘要翻译: 用于将分组信息从超范围设备(ORD)中继到通信塔的方法,系统,设备和计算机程序产品。 该方法包括从ORD发送消息。 该消息可被收发器设备识别为要重复的消息。 该消息存储在还测量消息的接收信号质量的收发器设备中,并且在延迟与接收信号质量成反比的时间间隔之后中继消息。

    METHOD, APPARATUS, AND SYSTEM FOR DETECTING HOT SOCKET DETERIORATION IN AN ELECTRICAL METER CONNECTION
    6.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR DETECTING HOT SOCKET DETERIORATION IN AN ELECTRICAL METER CONNECTION 有权
    用于检测电表连接中的热插座检测的方法,装置和系统

    公开(公告)号:US20080084216A1

    公开(公告)日:2008-04-10

    申请号:US11697590

    申请日:2007-04-06

    IPC分类号: G01R31/04 G01N25/00

    CPC分类号: G01R31/04 G01R22/063

    摘要: A system for detecting, at a remote location, a deterioration in an electrical connection, such as an electrical meter socket connection, includes at least one deterioration sensing device that includes an apparatus for detecting, at a remote location, a deterioration in an electrical connection; at least one fixed or portable receiving communication device, each configured to receive temperature information from the at least one deterioration sensing device and to transmit the temperature information via a communication network; and a back end connected to the communication network and configured to receive temperature information from the at least one fixed or portable sensing communication device. Upon exceeding a predetermined condition, the back-end may forward an alarm warning to a utility.

    摘要翻译: 用于在远程位置检测诸如电表插座连接的电连接的恶化的系统包括至少一个劣化感测装置,其包括用于在远程位置检测电连接的劣化的装置 ; 至少一个固定或便携式接收通信设备,每个被配置为从所述至少一个劣化感测设备接收温度信息并且经由通信网络发送所述温度信息; 以及连接到所述通信网络并被配置为从所述至少一个固定或便携式感测通信设备接收温度信息的后端。 当超过预定条件时,后端可以向公用设施转发报警警告。

    Method, apparatus, and system for detecting hot socket deterioration in an electrical meter connection
    7.
    发明授权
    Method, apparatus, and system for detecting hot socket deterioration in an electrical meter connection 有权
    用于检测电表连接中的热插座劣化的方法,装置和系统

    公开(公告)号:US07513683B2

    公开(公告)日:2009-04-07

    申请号:US11697590

    申请日:2007-04-06

    IPC分类号: G01K3/00

    CPC分类号: G01R31/04 G01R22/063

    摘要: A system for detecting, at a remote location, a deterioration in an electrical connection, such as an electrical meter socket connection, includes at least one deterioration sensing device that includes an apparatus for detecting, at a remote location, a deterioration in an electrical connection; at least one fixed or portable receiving communication device, each configured to receive temperature information from the at least one deterioration sensing device and to transmit the temperature information via a communication network; and a back end connected to the communication network and configured to receive temperature information from the at least one fixed or portable sensing communication device. Upon exceeding a predetermined condition, the back-end may forward an alarm warning to a utility.

    摘要翻译: 用于在远程位置检测诸如电表插座连接的电连接的恶化的系统包括至少一个劣化感测装置,其包括用于在远程位置检测电连接的劣化的装置 ; 至少一个固定或便携式接收通信设备,每个被配置为从所述至少一个劣化感测设备接收温度信息并且经由通信网络发送所述温度信息; 以及连接到所述通信网络并被配置为从所述至少一个固定或便携式感测通信设备接收温度信息的后端。 当超过预定条件时,后端可以向公用设施转发报警警告。