Extension device for a computer system capable of operating in a

Details Extension device for a computer system capable of operating in a Extension device for a computer system capable of operating in a

1997-02-28

1998-08-11

Ray, Gopal C.

Telephonic communications

Special services

Anonymous party

379 67, 379 82, 379 88, H04M 164, H04M 1100, G06F 906, G06F 1310

Patent

active

057940584

ABSTRACT:
Described is an extension device for use with a computer system which includes a memory for storing an application program which can perform at least one software function. A modem is operative to encode the at least one software function to first tone signals and transfer them onto a telephone line. The modem is further operative to decode second tone signals received from the telephone line and transfer the first tone signals in response thereto. The system includes power management circuitry (PMC) for changing the system from a low power state to a normal operating state responsive to a wake up control tone signal. The extension device includes a keypad for inputting (1) command signals corresponding to the at least one software function and (2) a wake up command signal. A display is included on the extension device for displaying information related to the at least one software function. The extension device also includes a controller coupled to a signal generator and a signal decoder. The controller and signal generator are operative to convert (1) the wake up command signal to the wake up control tone signal and (2) the command signals to the second tone signals. The controller and signal decoder are operative to decode the first tone signals to control the extension device to operate in accordance with the at least one software function.

REFERENCES:
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patent: 5029202 (1991-07-01), Doernbach, Jr. et al.
patent: 5063589 (1991-11-01), Tsushima
patent: 5142564 (1992-08-01), Chu
patent: 5469491 (1995-11-01), Morley, Jr. et al.
patent: 5631051 (1997-05-01), Nichols et al.
patent: 5727047 (1998-03-01), Bentley et al.

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