Opto-coupler based secure computer communications interface

Details Opto-coupler based secure computer communications interface Opto-coupler based secure computer communications interface

1995-05-21

1997-09-02

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359127, 385 24, 380 94, 370419, 379 9302, H04B 1020, H04J 1400

Patent

active

056638191

ABSTRACT:
An opto-coupler interface provides secure control over the ability of a remote network (Internet) user to access a local user workstation. The interface is installed as an auxiliary unit between the external network and the local user's workstation connection to its associated local area network. Once installed, the opto-coupler based connectivity interface allows a computer end user to selectively provide a communication path between the end user's workstation and an external data communication network, only during the time that the user wishes to be connected to the network. In the absence of this switched connection, the opto-coupler is turned off, thereby securely severing the external access communication link and thereby preventing external data communication network access to either the end user or a local network with which the end user's workstation is normally connected.

REFERENCES:
patent: 4748689 (1988-05-01), Mohr

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