G - Physics
06
F
340/76
G06F 11/00 (2006.01) G06F 13/00 (2006.01) H04M 11/06 (2006.01)
Patent
CA 1262940
IMPROVED MODEM CONTROLLER ABSTRACT Disclosed is initialization apparatus for the automatic forcing of a modem into a predetermined operating state in the event of excessive transients on the output voltage of the power supply of the modem, comprising in combination power supply means for providing operating voltage and current to the modem, high pass filter means connected to the power supply means for providing a filtered transient output signal, comparator means responsive to the filtered transient output signal and to a first predetermined reference voltage for providing a reset pulse of a predetermined minimum duration, and control means for controlling the operation of the modem and responsive to the reset pulse for forcing the control means and the modem into the predetermined operating state independent of the present operating state of the control means and the modem.
594950
Inskeep Jeffrey
Thomas George Robert
Finlayson & Singlehurst
Hayes Microcomputer Products Inc.
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