| 摘要 |
In a serial bus system an active representation of the logic states of a bus signal for transmission of both logic states is implemented either on two separate lines for separate transmission of the logic states thereon or on a single line with both logic states being represented by different frequencies. In the method selection of a subscriber connected to the bus, the subscribers wishing to transmit a message indicate this by issuing a collision signal to the bus. The time period during which the collision signal is issued by each subscriber is chosen in such a way that each subscriber of the bus has the possibility to be prepared for the selection. The selection of the subscriber wishing to transmit a message then is done by means of an address comparison on a bit-by-bit basis.
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