Modem having external reset circuit

Details Modem having external reset circuit Modem having external reset circuit

1996-11-26

1998-10-27

Chin, Wellington

Pulse or digital communications

Transceivers

Modems

375377, 327198, H04B 138, H04L 516

Patent

active

058286977

ABSTRACT:
A specially designed external reset circuit for a modem in a computer system includes an external reset switch provided on the computer system accessible to a user and operable to generate a manual reset signal in response to the user's manipulation of said external reset switch. A signal stability circuit is connected to the external reset switch, for stabilizing the manual reset signal and preventing occurrence of a sudden surge of voltage when the external reset switch is turned on and turned off. A signal combination circuit includes a first input terminal coupled to receive occurrence of the manual reset signal and a second input terminal coupled to receive occurrence of a computer reset signal generated from the computer system, for logically combining occurrence of the manual reset signal and the computer reset signal to generate a modem reset signal. And a modem control circuit including a modem having a reset terminal connected to the signal combination circuit, for resetting operation of the modem in response to reception of the modem reset signal.

REFERENCES:
patent: 4742482 (1988-05-01), Inskeep et al.
patent: 4782498 (1988-11-01), Copeland, III

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