Control device for enabling and disabling the data transmission

Electrical computers and digital data processing systems: input/ – Intrasystem connection

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Details

710101, 710103, 710120, 713300, G06F 1300

Patent

active

059875453

ABSTRACT:
A device for controlling data transmission between a docking station and a portable computer includes signal control circuitry connected to the docking station for selectively enabling and disabling data transmission between the docking station and the portable computer to enable and disable expanded operating functions of the portable computer, respectively. The signal control circuitry enables and disables the data transmission between the docking station and the portable computer in dependence upon a first signal indicating a power supply state of the docking station, a second signal indicating a power supply state of the portable computer, and a third signal indicating a connection state between the docking station and the portable computer.

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