Boots – shoes – and leggings
Patent
1992-10-20
1996-02-27
Lee, Thomas C.
Boots, shoes, and leggings
39520021, 364DIG1, 36424294, 36424295, 364DIG2, 36493551, 36494063, H04J 302, H04L 1242, H04L 1246
Patent
active
054955807
ABSTRACT:
A system for securing communications between devices connected to a ring network. In accordance with the present invention, when a message frame is passed around the ring network, a gate keeper circuit associated with at least one port of a hub determines whether the message frame is intended for any of the nodes connected to that port. If the message frame is not intended for any of the nodes connected to that port, the message frame is encoded before it exits the hub through the port to traverse the subnetwork connected to the port, and decoded after it reenters the hub through the port. If and only if at least one node on the subnetwork connected to the port is intended to receive the message frame, then each node connected to that port can read the message frame.
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patent: 4341925 (1982-07-01), Doland
patent: 4386416 (1983-05-01), Giltner et al.
patent: 5161192 (1992-11-01), Carter et al.
patent: 5177788 (1993-01-01), Schanning et al.
patent: 5235644 (1993-08-01), Gupta et al.
patent: 5251203 (1993-10-01), Thompson
patent: 5329623 (1994-07-01), Smith et al.
patent: 5371852 (1994-12-01), Attanasio et al.
Dinh D.
Lee Thomas C.
XLNT Designs, Inc.
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