Multiplex communications – Diagnostic testing – Path check
Patent
1995-05-02
1998-04-07
Olms, Douglas W.
Multiplex communications
Diagnostic testing
Path check
370252, 379 22, H04J 116, H04J 314
Patent
active
057373167
ABSTRACT:
A process for detecting link status in a computer network where the link and the load at the end of the link have a matched characteristic impedance. The data to be transmitted over the link is converted into a substantially continuous, random signal with a substantially known spectrum. This signal is transmitted over a link from a first end to the second or receiving end of the link. The first end of the link is analyzed for a reflection signal caused by a mismatch of the characteristic impedance of the link and the termination of the link. The link is identified as satisfactory if the reflection signal represents a substantial match between the characteristic impedance of the link and the characteristic impedance of the termination of the link. The link is identified as defective if the reflection signal represents a mismatch between the characteristic impedance of the link and the termination.
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3Com Corporation
Bnimoussa A.
Olms Douglas W.
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