Multiplex communications – Wide area network – Packet switching
Patent
1988-11-21
1990-06-26
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 952, H04J 302
Patent
active
049378155
ABSTRACT:
System and method for regulating the servicing of multiple peripheral devices by a central processing unit. The system and method is highly beneficial where some of the peripheral devices place equal priority demand on the central processing unit. A plurality of link interfaces are interconnected between the peripheral devices and the central processing unit. The link interfaces are interconnected by means of token transmission circuitry. The token transmission circuitry requlates the operation of the link interfaces and thereby the serving of the peripheral devices. The use of the token transmission circuitry substantially increases the efficiency and performance of the link interfaces.
REFERENCES:
Motorola-MC68153 Bus Interrupter Module, Product Review, 1983.
Signetics-SCC2698 Octal Universal Asynchronous Receiver/Transmitter (Octal-UART), Preliminary Specification, Dec. 1986, pp. 2-266 to 2-284.
Digital-DC349-AA Octal Asynchronous Receiver Transmitter, Data Sheet, Preliminary, Oct. 1984, pp. 1 to 23.
Intel-8259A Programmable Interrupt COntroller (8259A/8259A-2/8259A-8), Sep. 1987, pp. 2-271 to 2-294.
Chin Wellington
Safourek Benedict V.
Systech Corporation
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