Collision detection circuit for communications network

Details Collision detection circuit for communications network Collision detection circuit for communications network

1991-03-28

1993-03-23

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 851, H04J 302

Patent

active

051970660

ABSTRACT:
A collision detection circuit which indicates to a processing node, while the node is transmitting, that another transmission has, or is occurring, on the network comprises a means for directionally coupling a processing node to the network to discriminate between the outgoing power associated with a first message packet and the incoming power associated with a second message packet. A sensing means receives the incoming power from the directional coupling means during the transmission of the first message packet and indicates that a collision is occurring between the two transmissions. The directional coupling means comprises a cross-coupled voltage divider network configured such that a nulled voltage is generated at a pair of collision detection ports in response to the outgoing transmission, whereas a differential voltage is produced across the collision detection ports whenever an incoming colliding transmission appears.

REFERENCES:
patent: Re31638 (1984-07-01), Lam
patent: 3983323 (1976-09-01), Griffith et al.
patent: 4187535 (1980-02-01), Wigley et al.
patent: 4610010 (1986-09-01), Claessen et al.
patent: 4636584 (1987-01-01), Binkerd et al.
patent: 4642607 (1987-02-01), Strom et al.
patent: 4642805 (1987-02-01), Dumas et al.
patent: 4766402 (1988-08-01), Grane
patent: 4797901 (1989-01-01), Goerne et al.

Affiliated with

Also associated with

Rating

Collision detection circuit for communications network does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Collision detection circuit for communications network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collision detection circuit for communications network will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1357640