초록 ▼

A multiplex transmission system according to this invention includes a plurality of multiplex nodes connected to one another via a common multiplex bus, for effecting data transfer between the nodes. When reception nodes correctly receive data transmitted from one of the nodes for each frame, each o

A multiplex transmission system according to this invention includes a plurality of multiplex nodes connected to one another via a common multiplex bus, for effecting data transfer between the nodes. When reception nodes correctly receive data transmitted from one of the nodes for each frame, each of the reception nodes returns an ACK signal to the multiplex bus, registers all of the nodes connected to the multiplex bus into the ACK table in response to the ACK signal, and effects the ACK management. In this case, for example, if a door FR multiplex node causes an interruption to transmit a frame while an air-conditioning unit multiplex node is retransmitting a frame, the air-conditioning unit multiplex node effects the ACK management without regarding the ACK signal for the interruption frame as an object of the updating logic of its own ACK table.

대표청구항 ▼

A multiplex transmission system comprising: a plurality of nodes, common transmission path means for connecting said nodes to each other so as to effect data transmission between said plurality of nodes, wherein each of said nodes returns a reception recognition signal to said transmission path mean

A multiplex transmission system comprising: a plurality of nodes, common transmission path means for connecting said nodes to each other so as to effect data transmission between said plurality of nodes, wherein each of said nodes returns a reception recognition signal to said transmission path means when a respective reception node normally receives data transmitted from any one of said nodes for each frame, and at least one of said nodes including: first table means for managing the state of each node connected to said transmission path means, second table means for controlling retransmission of said frame when said reception recognition signal is not returned, and means for: registering a corresponding node in said first table means when the reception recognition signal is normally received for receipt of said frame, and removing said corresponding node from said first table means in the case where the node which does not continuously return said reception recognition signal a predetermined number of times exists even if the frame is transmitted, and wherein when said frame is transmitted, retransmission of said frame is executed the predetermined number of times until said reception registration signal is returned from all nodes registered in said second table means.