1994-10-13
1997-05-13
Beausoliel, Jr., Robert W.
G06F 1130
Patent
active
056300581
ABSTRACT:
A network protection method and apparatus are disclosed for alerting an operator when a terminal device is disconnected from the network. A network controller adapter is connected to a network control computer. The network controller periodically stops normal data communication and scans some or all of the network ports to ascertain the present and absent status of a terminal device at each port. Status is detected by passing a current through a port and measuring the feedback voltage. If the status changes between scans, an operator is alerted by sounding an alarm at the network control computer or by other steps such as dialing a telephone number and transmitting a stored message or by transmitting an alarm message over the network to one of the terminal devices such as a personal computer.
REFERENCES:
patent: 3982180 (1976-09-01), Vaiden
patent: 3983338 (1976-09-01), Mathauser
patent: 4097696 (1978-06-01), Nyhuis et al.
patent: 4155073 (1979-05-01), Ulch et al.
patent: 4491838 (1985-01-01), West
patent: 4514845 (1985-04-01), Starr
patent: 4519070 (1985-05-01), Bell
patent: 4551671 (1985-11-01), Annunziata et al.
patent: 4652698 (1987-03-01), Hale et al.
patent: 4924457 (1990-05-01), Shimizu
patent: 4951283 (1990-08-01), Mastrocola et al.
patent: 5193177 (1993-03-01), Burri
patent: 5394542 (1995-02-01), Frey et al.
patent: 5402431 (1995-03-01), Saadeh et al.
patent: 5406260 (1995-04-01), Cummings et al.
Mosley Joseph M.
Zalph Walter N.
Beausoliel, Jr. Robert W.
Hesse Karl O.
International Business Machines - Corporation
Magistrale Anthony N.
Palys Joseph E.
LandOfFree
Network connected device protection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Network connected device protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network connected device protection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1392879