Token ring concentrator with global reset capability

A concentrator (10) for a token ring network (12) utilizes latching relays having separate set and reset coils (28,30) for controlling the insertion/bypass of the ports (14) into the token ring network (12). Circuitry for providing a global reset capability for all of the ports (14) includes transis...

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Bibliographic Details
Main Authors BABU, K.C, RAO, S. KRISHNAKUMAR, MATZ, BRET A, KUMAR, HEMANT K.R, RAKSHIT, SOMA, GEORGE, GEETA
Format Patent
LanguageEnglish
French
German
Published 24.06.1992
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A concentrator (10) for a token ring network (12) utilizes latching relays having separate set and reset coils (28,30) for controlling the insertion/bypass of the ports (14) into the token ring network (12). Circuitry for providing a global reset capability for all of the ports (14) includes transistors (68,70) which function to both provide a path for the global reset pulse to the reset coils (28,30) and to isolate each reset coil (30) in a port (14) from the reset coils of the other ports. Other circuitry is provided for preventing activation of the global reset function from affecting an active port.
Bibliography:Application Number: EP19910311589