Modem for connection to a telephone line through a either portab

Details Modem for connection to a telephone line through a either portab Modem for connection to a telephone line through a either portab

1996-12-31

1999-08-03

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

710 62, 710 70, 710 14, 710101, 379 9314, 341 22, 370385, 375222, 455412, G06F 1314, G06F 902

Patent

active

059319291

ABSTRACT:
A laptop computer contains a built-in modem and has a phone jack for connection to a telephone line while the computer is being operated in a stand-alone mode. A docking station into which the laptop computer may be docked allows the combined unit to be operated in a desk-top mode. The docking station may have a full-sized keyboard and display so that the laptop functions as the main computer a user may employ in the office or home. A telephone connection is already in place at the docking station so that the user need not make a phone line connection to invoke the docked mode, but instead merely nests the laptop in the docking station. In one embodiment, the only components of the modem that are duplicated in the docking station are the phone jack itself and an isolation and 2-to-4 wire converter, so the plug-in connector ordinarily employed between a laptop and a docking station may be of a low-voltage, spike voltage protected form, whereby the coupling used for computer logic and control levels is compatible. The possibility of damage to computer circuits due to the proximity of high-voltage telephone line connections is thus avoided.

REFERENCES:
patent: 5411416 (1995-05-01), Balon et al.
patent: 5526493 (1996-06-01), Shu
patent: 5574859 (1996-11-01), Yeh
patent: 5666265 (1997-09-01), Lutz et al.
patent: 5668977 (1997-09-01), Swanstrom et al.
patent: 5679940 (1997-10-01), Templeton et al.
patent: 5701515 (1997-12-01), Gradeler
patent: 5754837 (1998-05-01), Walsh et al.

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