Time slot protocol in the transmission of data in a data...

Details Time slot protocol in the transmission of data in a data... Time slot protocol in the transmission of data in a data...

H - Electricity

04

L

354/233

H04L 12/28 (2006.01) G06F 13/36 (2006.01) G06F 13/372 (2006.01) G06F 13/42 (2006.01) H04L 12/403 (2006.01)

Patent

CA 1280216

TIME SLOT PROTOCOL IN THE TRANSMISSION OF DATA IN A DATA PROCESSING NETWORK Abstract of the Disclosure A data processing network having a host computer, a plurality of terminals, a cable for trans- mitting data between the host computer and the termi- nals, and a controller for controlling character data sent from the host computer to the terminals and keystroke data sent from the terminals to the host computer. Data is transmitted in a cycle of time frames, with each time frame having a plurality of time slots, one time slot being allocated to the transmission of one character from the host computer to a designated terminal. Further, each time frame includes a time slot for the transmission of a key- stroke from a designated terminal to the host comput- er. The terminal which may transmit a keystroke to the host computer is designated in a sync/poll charac- ter generated at the beginning of each time frame by the controller.

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