Device for potential-free transmission of data
    3.
    发明授权
    Device for potential-free transmission of data 失效
    用于数据可靠传输的设备

    公开(公告)号:US5105441A

    公开(公告)日:1992-04-14

    申请号:US343179

    申请日:1989-03-07

    CPC分类号: H04L25/0268

    摘要: A device for potential-free transmission of dominant and recessive data bits in a bus system operating with bit-by-bit arbitration includes a series connection of a modulator, a galvanic separation circuit, and a demodulator. Data bits to be transmitted are scanned in the modulator at equidistant time intervals and are divided into two intermediate trains of data bits wherein the dominant bits alternate with the recessive bits. The two intermediate trains are applied to two input terminals of a galvanic separating device, and a demodulation is effected on the output side of the separating device.

    摘要翻译: PCT No.PCT / DE88 / 00354 Sec。 371日期:1989年3月7日 102(e)日期1989年3月7日PCT Filed 1988年6月13日PCT Pub。 公开号WO89 / 00368 日期:1989年1月12日。用于通过逐位仲裁操作的总线系统中的主导和隐性数据位的无电势传输的装置包括调制器,电流隔离电路和解调器的串联连接。 要发送的数据位以等间隔的时间间隔在调制器中扫描,并被划分为数据位的两个中间列,其中主要位与隐性位交替。 将两个中间列车施加到电流分离装置的两个输入端,并且在分离装置的输出侧进行解调。

    Method of and device for bringing a network interface out of a sleep
mode into a wake-up state
    9.
    发明授权
    Method of and device for bringing a network interface out of a sleep mode into a wake-up state 失效
    将网络接口从休眠模式引入唤醒状态的方法和设备

    公开(公告)号:US5216674A

    公开(公告)日:1993-06-01

    申请号:US576382

    申请日:1990-08-31

    CPC分类号: G06F11/2007 H04L25/02

    摘要: An activation device for bringing an network interface of a computer network for a motor vehicle, with at least two bus lines, out of a sleep mode into a wake-up mode. The activation device includes a signal flank change detection circuit, which is coupled to the bus lines and a reference voltage. In the event of an interruption or in the event of a short-circuit of one of the bus lines to ground or to a supply voltage of the computer network, the circuit evaluates a signal arriving on the other, intact bus line and emits a wake-up signal for the activation of the network interface. The flank change detection circuit has two comparators (5, 7), which are connected to the bus lines (U-, U+) and via a voltage divider (19) to a reference voltage (V.sub.cc /2). A voltage offset is produced by the voltage divider (19), by which offset the network interface can be brought into wake-up mode in the event of a short-circuit of the bus lines between each other, even if it was in sleep mode when the fault occurred.

    摘要翻译: PCT No.PCT / DE89 / 00091 Sec。 371日期1990年8月31日第 102(e)日期1990年8月31日PCT提交1989年2月17日PCT公布。 公开号WO90 / 09713 日期1990年8月23日。一种激活装置,用于将具有至少两条总线的机动车辆的计算机网络的网络接口从睡眠模式引入唤醒模式。 激活装置包括耦合到总线和参考电压的信号侧面变化检测电路。 在发生中断或其中一条总线短路到接地或计算机网络的供电电压的情况下,该电路评估到达另一条完好无损的母线的信号并发出唤醒 -up信号用于激活网络接口。 侧面变化检测电路具有两个比较器(5,7),它们连接到总线(U-,U +)并通过分压器(19)连接到参考电压(Vcc / 2)。 电压偏移由分压器(19)产生,即使在睡眠模式下,总线线路短路的情况下,网络接口也可以通过偏移来进入唤醒模式 故障发生时。