Redundant multistate signaling

摘要

A data communications system having a plurality of communication devices including a host having a first receiver and a second receiver; and one or more clients, each client including a transmitter coupled between a signal node and a transmitter node, the transmitter selectively transmitting a multistate signal from the signal node to the transmitter node; and a single conductor daisy-chain loop redundantly communicating each multistate signal from each the transmitter to both receivers, the single conductor daisy-chain loop electrically communicating each transmitter node to the receivers. A data communications method including a) transmitting selectively a multistate signal from each of one or more clients; b) communicating electrically each multistate signal to a first location on a host using a single conductor coupled to each the client; and c) communicating electrically each multistate signal to a second location on the host using the single conductor.

主权项

1. A data communications system, comprising:
a plurality of communication devices including:
a host having a first receiver and a second receiver; andone or more clients, each said client including a transmitter coupled between a signal node and a transmitter node, said transmitter selectively transmitting a multistate signal from said signal node to said transmitter node; and a single conductor daisy-chain loop redundantly communicating each said multistate signal from each said transmitter to both said receivers, said single conductor daisy-chain loop electrically communicating each said transmitter node to said receivers; wherein said first receiver includes a first input having a first pull-up resistance coupling said first input to a first voltage, wherein said second receiver includes a second input having a second pull-up resistance coupling said second input to a second voltage node, wherein each said transmitter is configured to transmit a signal current for said multistate signal to said single conductor daisy-chain loop, said transmitter including an output coupled to said transmitter node wherein said single conductor daisy-chain loop electrically communicates each said transmitter node to said inputs.