Bus signal detector

Details Bus signal detector Bus signal detector

1995-06-07

1998-05-12

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

375214, H03K 1100, H04L 2564

Patent

active

057516928

ABSTRACT:
A bus signal detector for a signal transmitted via a bus (12) has an edge detector (14) which supplies a signal (S.sub.F1) indicating the occurrence of a signal edge (F1) when the voltage on the bus (12) suddenly changes by at least a predetermined relative threshold (.DELTA.U.sub.s) in relation to a reference voltage (V.sub.ref) continuously adapted to the quiescent voltage of the bus (.sub.12). An evaluating circuit following the edge detector (14) uses the signal (S.sub.F1) supplied by the edge detector (14) to produce an output signal indicating a bus signal.

REFERENCES:
patent: 3527887 (1970-09-01), Clapp et al.
patent: 4229831 (1980-10-01), Lacher
patent: 4266099 (1981-05-01), Kayalioglu et al.
patent: 4480276 (1984-10-01), Batey et al.
patent: 5307196 (1994-04-01), Kinoshita
patent: 5392317 (1995-02-01), Cho et al.
patent: 5491434 (1996-02-01), Harnishferger et al.

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