Thomson-csf

Pham Ngu Tung

Jean-Edgar Picquendar

Robert Lyon-Caen

A time division multiplexing system for telephone comprises a matrix of n.sup.2 two-state elements arranged in rows and in columns. The elements of the same row have respective inputs connected in parallel, these inputs being adapted for receiving telephonic frames. The elements of the same column have their respective outputs adapted for delivering telephonic frames. The n.sup.2 elements have respective control inputs for triggering from one conducting state to the other blocked state or vice-versa. These n.sup.2 control inputs are connected successively and cyclically to the n.sup.2 bistable elements of the successive columns, of a memory having p columns, by means of a shift register.

Fine division telephone multiplexed switching network

A novel high-speed logic gate of compact design, having low energy consumption comprises a plurality of components each constituted by two complementary transistors and saturable resistors integrated upon one in the same substrate. The base of the first transistor has for its base a portion of the collector of a second transistor, and for its collector the base of the second transistor. The second transistor has its base diffused into its emitter into its base.

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Paris, France

Pham Ngu Tung