Multipoint link data-transmission control system

Details Multipoint link data-transmission control system Multipoint link data-transmission control system

1987-03-30

1989-12-19

Shaw, Gareth D.

Boots, shoes, and leggings

371 14, 3649424, 3649454, G06F 1300, G06F 1100

Patent

active

048887285

ABSTRACT:
According to a multipoint link data-transmission control system, a master transmission device delivers message data via a bidirectional transmission path to a plurality of slave transmission devices, the data containing a control field for designating control data for setting or resetting a flag. The transmitting of data from the slave transmission device to the master transmission device is allowed when the flag is set, and is inhibited when the flat is reset. Where the transmitting of data from a faulty slave transmission device is to be inhibited, the master transmission device transmits the data to the faculty slave transmission device, by designating flag reset data to the control field of the message data. As a result, a transmission-enable signal, which is delivered in synchronization with a transmission-timing clock signal, is reset, thereby stopping the transmitting of data from the slave transmission device to the master transmission device.

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patent: 4701910 (1987-10-01), Ulug
patent: 4736409 (1988-04-01), Hasegawa et al.

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