Data communications system for a reproduction machine having a m

Details Data communications system for a reproduction machine having a m Data communications system for a reproduction machine having a m

1977-08-30

1980-01-08

Chapnick, Melvin B.

Boots, shoes, and leggings

364104, G06F 304, G06F 906, G03G 1500

Patent

active

041830890

ABSTRACT:
A data communications system for an electrophotographic type reproduction machine or copier. The system includes a programmable master controller with memory and a command byte generator. A plurality of secondary controllers provide input data bytes reflecting the machine status to the master controller and receive command bytes from the master controller for operating the machine components. The secondary controllers are each connected to the master controller such that corresponding data bits of the secondary controller are ORed together to provide simultaneous transmission of input data bytes from the secondary controllers to the master controller while assuring that corresponding bits of the simultaneously transmitted bytes have mutually exclusive data therein.

REFERENCES:
patent: 3690760 (1972-09-01), Banks et al.
patent: 3876106 (1975-04-01), Powell et al.
patent: 3940210 (1976-02-01), Donohue
patent: 4016549 (1977-04-01), Hutner
patent: 4054380 (1977-10-01), Donohue et al.
patent: 4058850 (1977-11-01), Sheikh
patent: 4062061 (1977-12-01), Batchelor et al.

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