Apparatus and method for monitoring the presence of cables conne

Details Apparatus and method for monitoring the presence of cables conne Apparatus and method for monitoring the presence of cables conne

1994-03-02

1996-02-20

Lall, Parshotam S.

Boots, shoes, and leggings

39518202, 364DIG1, 364DIG2, G06F 1336

Patent

active

054936500

ABSTRACT:
An apparatus for monitoring whether a cable is coupled to a port of a computer network. A free-running oscillator is initially set to a base frequency when a cable is not coupled to the port. If a cable is subsequently coupled to that port, the inherent capacitance of that cable loads one of the nodes associated with the oscillator. The result of this capacitance is that the oscillator is now running at a lower frequency. A frequency counter and threshold comparator are used to detect whether the oscillator frequency has fallen below a pre-determined frequency threshold. If the oscillator frequency has not fallen below this threshold, the port is not included in the network path. However, if the oscillator frequency has fallen below the threshold, this indicates that a cable has been coupled to the port. Consequently, the trunk port is inserted into the computer network's path.

REFERENCES:
patent: 3749857 (1973-07-01), Konig
patent: 4023154 (1977-05-01), Comeaux
patent: 4506210 (1985-03-01), Chase
patent: 4670709 (1987-06-01), Iredale
patent: 4812752 (1989-03-01), Preuss
patent: 5053910 (1991-10-01), Goldstein
patent: 5170113 (1992-12-01), Albonesi
patent: 5339022 (1994-08-01), Fleming et al.
patent: 5365513 (1994-11-01), Copley et al.
patent: 5365515 (1994-11-01), Graham

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