Method and an apparatus for early bit collision detection

Details Method and an apparatus for early bit collision detection Method and an apparatus for early bit collision detection

1985-01-09

1987-01-27

Fleming, Michael R.

Excavating

364900, G06F 1110

Patent

active

046399216

ABSTRACT:
Disclosed is a unit for interfacing an 82586-type local-communications controller to a modem of the type used in an RF network, the unit employing both an NRZI-to-NRZ converter which includes an algorithmic-state machine for converting packets encoded in NRZI format to NRZ format and for recovering the clocking information and a comparator for comparing successive check-sum portions derived from a packet for transmission in the network with similar portions derived from an echo packet received from the network to detect a packet collision.

REFERENCES:
patent: 3675202 (1972-07-01), Verhoeff
patent: 3686629 (1972-08-01), Yu
patent: 4142243 (1979-02-01), Bishop
patent: 4368534 (1983-01-01), Sibley

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