Multiplex communications – Wide area network – Packet switching
Patent
1993-01-26
1994-05-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 60, 34082502, 34082579, H04Q 100
Patent
active
053094263
ABSTRACT:
A serial simplex switch design is provided which includes I/O ports each of which is configurable specifically for attachment to a data communications subsystem or, alternatively, for cascaded connection to a similarly configured I/O port on another switch. The switch provides a packet routing function including input and output buffers for each of its I/O ports wherein packets of control messages sent by one subsystem are temporarily stored prior to being delivered to the appropriate destination subsystem. When configured to be directly attached to a subsystem, the I/O ports separate control messages from incoming integrated data and control message strings. In a cascade configuration, however, a mechanism is provided wherein data and control messages are separated into two physical paths to eliminate the delays associated with integrated data and control message flow through the cascaded I/O port. Each I/O port is configurable to either of these methods of operation by means of programmable latches associated with the I/O port.
REFERENCES:
patent: 4679191 (1987-07-01), Nelson et al.
patent: 4752777 (1988-06-01), Franaszek
patent: 4875206 (1989-10-01), Nichols et al.
patent: 4914429 (1990-04-01), Upp
patent: 4922486 (1990-05-01), Lidinsky et al.
patent: 4965798 (1990-10-01), Mostafa et al.
patent: 4968977 (1990-11-01), Chinnaswamy et al.
patent: 4975695 (1990-12-01), Almond et al.
patent: 5005171 (1991-04-01), Modisette, Jr. et al.
patent: 5051982 (1991-09-01), Brown et al.
patent: 5051984 (1991-09-01), Mostafa et al.
patent: 5123011 (1992-06-01), Hein et al.
Cazzolla John J.
Chang Luke L.
Crouse Richard S.
Hurtado Marco M.
Nguyen Kha D.
Hsu Alpus H.
International Business Machines - Corporation
Olms Douglas W.
LandOfFree
High performance cascadable simplex switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High performance cascadable simplex switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High performance cascadable simplex switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2120911