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51 条记录 (耗时 0.012 秒)

    Reading protocol for transponders of electronic identification system
    1.
    发明授权
    Reading protocol for transponders of electronic identification system 有权
    电子识别系统转发器阅读协议

    公开(公告)号：US07019664B2

    公开(公告)日：2006-03-28

    申请号：US09878403

    申请日：2001-06-12

    申请人： Christopher Gordon Gervase Turner ,  John McMurray

    发明人： Christopher Gordon Gervase Turner ,  John McMurray

    IPC分类号： H04Q5/16

    CPC分类号： G06K7/10059 ,  G06K7/0008

    摘要： A method of reading a plurality of transponders 14.1 to 14.n forming part of an electronic radio frequency identification system 10 comprises the steps of prompting the transponders at 38 to transmit preambles 30 only of respective response digital sequences to a reader 12. The reader then locks onto the preamble 30 transmitted by one of the transponders and immediately causes a mute signal 38 to be broadcast to mute all of the transponders not yet transmitting. The reader then transmits during a first time window 42 a first command 40 to cause the one transponder to transmit a remainder of the sequence. Having received and read the remainder, the reader transmits a second command 44 during a second time window 46 to cause the one transponder to switch to a sleep mode wherein the one transponder no longer transmits any part of the sequence, and to unmute the muted transponders.

    摘要翻译： 读取构成电子射频识别系统10的一部分的多个应答器14.1至14的方法包括以下步骤：在38处提示应答器仅将相应的响应数字序列的前导码30仅发送到读取器12。 然后，读取器锁定到由一个应答器发送的前同步码30上，并立即使静音信号38被广播以静音所有尚未发送的应答器。 然后，读取器在第一时间窗口42期间发送第一命令40，以使得一个应答器发送该序列的剩余部分。 在接收和读取剩余部分之后，读取器在第二时间窗口46期间发送第二命令44，以使得一个应答器切换到睡眠模式，其中一个应答器不再发送序列的任何部分，并且使静音转发器 。

    Digital pulsed DC remote-control system
    2.
    发明授权
    Digital pulsed DC remote-control system 失效
    数字脉冲直流遥控系统

    公开(公告)号：US4208631A

    公开(公告)日：1980-06-17

    申请号：US918549

    申请日：1978-06-23

    申请人： Kermit M. Beseke ,  James E. Hoffmann ,  Ronald J. Kopecki

    发明人： Kermit M. Beseke ,  James E. Hoffmann ,  Ronald J. Kopecki

    IPC分类号： H04W88/18 ,  H04Q5/16

    CPC分类号： H04W88/185

    摘要： A remote control system and method therefor is disclosed that includes a control station coupled by a two-wire line to a base station having a transmitter for providing simplex radio communications to mobile radios. The control station utilizes digital pulsed DC signalling to select a radio channel of the base-station transmitter for transmission of each message. In response to activation of a transmission switch, the control station applies a DC voltage to the two-wire line and thereafter applies a command pulse train having a predetermined number of pulses corresponding to the selected radio channel. The base station is responsive to the DC voltage on the two-wire line for receiving the command pulse train. The pulses in the received command pulse train are totalized, and the base station transmits the message on the radio channel corresponding to the totalized number of pulses.

    摘要翻译： 公开了一种遥控系统及其方法，其包括通过双线线路耦合到具有用于向移动无线电提供单工无线电通信的发射机的基站的控制站。 控制站利用数字脉冲DC信令来选择基站发射机的无线电信道，用于传输每个消息。 响应于传输开关的激活，控制站向双线线路施加直流电压，然后施加具有与所选无线电信道相对应的预定数量脉冲的指令脉冲串。 基站响应于用于接收指令脉冲串的双线线路上的直流电压。 接收到的命令脉冲串中的脉冲被合计，并且基站在对应于总计脉冲数的无线电信道上发送消息。

    Apparatus and method for the selective ringing of telephones
    3.
    发明授权
    Apparatus and method for the selective ringing of telephones 失效
    电话选择性振铃的装置和方法

    公开(公告)号：US3626106A

    公开(公告)日：1971-12-07

    申请号：US3626106D

    申请日：1969-08-27

    申请人： CLARENCE A GREENING ,  BILLY G GRIMSLEY

    发明人： GREENING CLARENCE A ,  GRIMSLEY BILLY G

    IPC分类号： H04Q3/62 ,  H04Q5/16 ,  H04M1/26

    CPC分类号： H04Q3/625 ,  H04Q5/16

    摘要： A selective ringing apparatus for a multiextension telephone system on a common carrier drop either as a point to point or a part line system. Seizure of the apparatus by a central control locks and conditions the same to receive a sequence of two dial digit pulse trains for ringing a selected extension. The first pulse train is directed into a selector having a distributor gate for each group of dial pulses which may occur in the first dial digit. The second pulse train is directed into one of a group of selectors, a selector for each distributor gate, and each has a distributor gate for each group of dial pulses which may occur in the second dial digit. Locking circuits select and hold these selectors to permit the ringing apparatus to ring a selected telephone extension. The apparatus can also be locked out if a local telephone seizes the line. Various other features include the use of wire line arrangements to selectively ring remotely located telephone extensions and a complimentary bridging board for use when the extensions are arranged as a party line circuit to permit selective dialing by a local extension to either the remote central control panel or to another extension within the system.