Multiplex communications – Wide area network – Packet switching
Patent
1989-07-18
1991-07-02
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 9410, 370 8540, 370 8550, 370 13, 34082505, H04J 302
Patent
active
050291599
ABSTRACT:
In a token ring transmission system, token loss causes selection of a leader terminal, which issues a new token. The leader terminal is chosen by selecting and storing a leadership selection reference value and then generating a succession of terminal identification signals and transferring them on the token ring transmission system. Each terminal receives the succession of signals and iteratively compares the terminal identification signals sequentially with the leadership reference signal. Each time a terminal identification signal exceeds the magnitude of the leadership reference signal, the leadership reference value is replaced with the value of the terminal identification signal. The first terminal detecting equality of a terminal identification signal with its leadership selection reference signal assumes leadership and issues a token.
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patent: 4593280 (1986-06-01), Grow
patent: 4604742 (1986-08-01), Hamada et al.
patent: 4860284 (1989-08-01), Brown et al.
International Business Machines - Corporation
Safourek Benedict V.
Ton Dang
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