Electronic crosspoint network with semiconductor switching

Abstract

Abstract A SWITCHING APPARATUS INCLUDES AN ELECTRONIC CROSSPOINT NETWORK FOR PROVIDING FULL ELECTRONIC CONNECTION OR DISCONNECTION BETWEEN AT LEAST TWO POINTS WHOSE INTERCONNECTION PROVIDES THE PARTICULAR CROSSPOINT. THE NETWORK HAS AN OPEN CIRCUIT CONDITION, IN WHICH A VERY HIGH OFF IMPEDANCE IS PROVIDED, AND A CLOSED CIRCUIT CONDITION, IN WHICH A VERY LOW ON IMPEDANCE IS PROVIDED. THE NETWORK INCLUDES AT LEAST TWO SERIES CONNECTED SEMICONDUCTOR BRANCHES AND A THIRD PARALLEL CONNECTED SEMICONDUCTOR BRANCH, WHICH IS COUPLED TO GROUND, CONNECTED IN BETWEEN. IN THE OPEN CIRCUIT CONDITION, THE SERIES BRANCHES DO NOT CONDUCT AND THE PARALLEL BRANCH DOES, PROVIDING A SHORT TO GROUND, WHEREAS, IN THE CLOSED CIRCUIT CONDITION, THE OPPOSITE OCCURS, PROVIDING AN OPEN CIRCUIT TO GROUND. THE PARALLEL BRANCH IS CONTROLLED IN ACCORDANCE WITH THE DESIRED CROSSPOINT SWITCHING FUNCTION PROVIDED VIA A LOGIC NETWORK. IF DESIRED, TWO SUCH CROSSPOINT NETWORKS MAY BE COUPLED TOGETHER IN A TWO-WIRE CIRCUIT TO SIMULTANEOUSLY CONTROL TWO CROSSPOINTS. THE CROSSPOINT NETWORK IS PREFERABLY UTILIZED TO INTERCONNECT POINTS TO WHICH SIGNALS, SUCH AS TELEPHONE SPEECH SIGNALS, ARE APPLIED, A PLURALITY OF SUCH NETWORKS BEING PROVIDED IN THE MATRIX ARRAYS OF A SPACE-DIVISION TELEPHONE SWITCHING NETWORK. D R A W I N G

Inventors

• 👤 A Resta

Bibliographic Details