Circuit arrangement for obtaining an interference-free trigger signal
especially for a fuel apportionment device in an internal combustion
engine
    1.
    发明授权
    Circuit arrangement for obtaining an interference-free trigger signal especially for a fuel apportionment device in an internal combustion engine 失效
    用于获得无干扰触发信号的电路装置,特别是用于内燃机中的燃料分配装置

    公开(公告)号:US4297599A

    公开(公告)日:1981-10-27

    申请号:US66743

    申请日:1979-08-15

    CPC分类号: H03K5/1252

    摘要: A circuit arrangement for obtaining an interference-free trigger signal such as for a fuel apportionment device from the ignition signal of an internal combustion engine, particularly one having a current-regulated final ignition stage. The output of the circuit arrangement begins when a signal derived from the final ignition stage exceeds a first, high threshold value and is terminated when, after falling below a second, low threshold value, a predetermined time lag period has ended. In this manner, a desired interference-free trigger signal is obtained which can be used to trigger various rpm-dependent circuit arrangements, such as electronic fuel apportionment and gear control.

    摘要翻译: 一种用于从内燃机的点火信号获得无干扰触发信号的电路装置,例如用于燃料分配装置,特别是具有电流调节的最终点火级的点火信号。 当从最终点火阶段得到的信号超过第一高阈值时,电路装置的输出开始,并且当在低于第二低阈值之后,预定的时间滞后期间已经结束。 以这种方式,获得可以用于触发各种依赖于rpm的电路布置(例如电子燃料分配和齿轮控制)的期望的无干扰的触发信号。

    Radiotelephone system with the character of a local or auxiliary
communications apparatus
    2.
    发明授权
    Radiotelephone system with the character of a local or auxiliary communications apparatus 失效
    具有本地或辅助通信设备特征的无线电话系统

    公开(公告)号:US5533030A

    公开(公告)日:1996-07-02

    申请号:US244007

    申请日:1994-09-12

    IPC分类号: H04W84/14 H04J1/08

    CPC分类号: H04W84/14

    摘要: A transmission process with specific adaptive properties in an analog or mixed analog-digital transmission system, having a fixed base station and a number of subscriber station independent of one another. Information from the base station is transmitted to the subscriber stations wherein each information channel is converted by suppressed carrier, single-side band modulation to a narrow-band signal. The narrow-band signals are arranged spectrally adjacent one another in a frequency multiplex allocation scheme and are modulated on a carrier set at a higher frequency range using phase or frequency modulation. Each subscriber accesses no more than one of the information channels. Information transmissions from the subscriber stations to the base station is performed using narrow-band radio channels.

    摘要翻译: PCT No.PCT / DE93 / 00766 Sec。 371日期1994年9月12日 102(e)1994年9月12日PCT PCT 1993年8月17日PCT公布。 公开号WO94 / 17336 日期为1994年3月31日。具有模拟或混合模拟数字传输系统中具有特定自适应特性的传输过程,具有固定基站和多个独立于用户站的用户站。 来自基站的信息被发送到用户站,其中每个信息信道被抑制的载波,单边带调制转换成窄带信号。 窄带信号在频率复用分配方案中以频谱相邻的方式布置,并且在使用相位或频率调制的较高频率范围内设置的载波上进行调制。 每个用户访问不超过一个信息信道。 使用窄带无线电信道来执行从用户站到基站的信息传输。

    Local ISDN radio transmission system
    3.
    发明授权
    Local ISDN radio transmission system 失效
    本地ISDN无线传输系统

    公开(公告)号:US5774460A

    公开(公告)日:1998-06-30

    申请号:US592426

    申请日:1996-07-03

    摘要: A local ISDN transmission system has a central base station and a number of subscriber radio terminals greater than the number of communication channels. The system is connectable to subscriber ports through an S.sub.0 wireless transmission interface and is responsive to an activation request from a subscriber radio terminal for opening any available and free communication channel for a communication. An intermediate generator in the base station and in each subscriber terminal divides an ISDN two-wire subscriber connection line between a line termination section and a network termination section communicating by radio transmission. The intermediate generator, upon the occurrence of an activation request by a subscriber terminal, allocates a communication channel within waiting and monitoring periods for the activation of the ISDN two-wire subscriber connecting line. A delay system delays the activation request by a delay period sufficient to switch the allocated communication channel and activate a radio system of the subscriber terminal.

    摘要翻译: PCT No.PCT / DE94 / 00878 Sec。 371日期:1996年7月3日 102(e)日期1996年7月3日PCT 1994年7月28日PCT公布。 公开号WO95 / 05053 日期1995年02月16日本地ISDN传输系统具有大于通信信道数量的中央基站和多个用户无线终端。 该系统可通过S0无线传输接口连接到用户端口,并响应于来自用户无线电终端的激活请求,以打开用于通信的任何可用和空闲的通信信道。 在基站和每个用户终端中的中间发生器在通过无线电传输通信的线路终端部分和网络终端部分之间划分ISDN两线用户连接线。 中间发生器在用户终端发生激活请求时,在等待和监视周期内分配用于激活ISDN两线用户连接线路的通信信道。 延迟系统将激活请求延迟足以切换所分配的通信信道并激活用户终端的无线电系统的延迟时间。

    Switching equipment and method for radiotelephone system of the local or
private branch exchange type
    4.
    发明授权
    Switching equipment and method for radiotelephone system of the local or private branch exchange type 失效
    本地或私营交换机的无线电话系统的交换设备和方法

    公开(公告)号:US5666398A

    公开(公告)日:1997-09-09

    申请号:US256686

    申请日:1994-07-19

    IPC分类号: H04W84/14 H04Q7/20

    CPC分类号: H04W84/14

    摘要: A radio telephone system is disclosed to satisfy in the short term basic telecommunication needs of areas which are insufficiently or not yet covered. The system has a number of duplex radio channels (transmission channels) substantially smaller than the number of radio telephone subscribers. These transmission channels are connected to the ports of a telecommunications exchange system which is part of the stationary radio station and which ensures both incoming and outgoing traffic with the public telecommunications network and internal exchanges within the system. Signalling, exchange, management, servicing, and special functions of radio operation between the stationary radio station and the subscriber connection device are ensured by a radio switching device which uses one, or if required, several transmission channels used as organization channels and not connected to the ports of the telecommunications exchange system. In the organization channel, a constant time-multiplexed communication is maintained with the subscriber connection device according to a random access process based on a special organization channel protocol. An essential characteristic of the invention is that the subscriber connection devices have an a/b interface for the connection of telecommunication terminals. The system and in particular the organization channel protocol are designed in such a way that no differences from a wired telecommunications connection are perceptible to the user, although the system is radio operated.

    摘要翻译: PCT No.PCT / DE93 / 01100 Sec。 371日期1995年1月17日 102(e)日期1995年1月17日PCT 1993年11月19日PCT公布。 公开号WO94 / 13112 PCT 日期1994年6月9日披露了一种无线电话系统,以短期满足不充分或尚未覆盖的地区的基本电信需求。 该系统具有比无线电话用户数更小的多个双工无线电信道(传输信道)。 这些传输信道连接到作为固定无线电台的一部分的电信交换系统的端口,并且确保与公共电信网络的传入和传出流量以及系统内的内部交换。 通过无线电切换装置确保固定无线电台和用户连接装置之间的无线电操作的信令,交换,管理,服务和特殊功能,无线电切换装置使用一个或如果需要,用作组织信道的几个传输信道,而不连接到 电信交换系统的港口。 在组织通道中,根据基于特殊组织信道协议的随机接入过程,用户连接设备保持恒定的时间复用通信。 本发明的基本特征是用户连接装置具有用于连接电信终端的a / b接口。 尽管系统是无线电操作的,系统,特别是组织信道协议被设计成使得与有线电信连接的区别不被用户所察觉。