Accession Number : ADD008979

Title :   Teletypewriter Loop Switching Matrix.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hartley,Robert R ; Konrad,Joseph A

Report Date : 01 Sep 1981

Pagination or Media Count : 4

Abstract : A system for interconnecting and switching teletypewriter or digital data signals when transmitted over any of the four universally accepted standard signal loops. The system incorporates a novel triple loop arrangement; an 'IN' loop connected to a signal source, an 'INTERNAL' loop to provide switching and an 'OUT' loop connected to the signal destination. Each 'IN' loop or 'OUT' loop together with half of its associated 'INTERNAL' loop is implemented in a single printed circuit card. The system can incorporate any number of 'IN' and 'OUT' loops and the associated 'INTERNAL' loops. (Author)

Descriptors :   *Patents, *Switching circuits, *Teletype systems, *Matrices(Circuits), Printed circuits, Printed circuit boards, Closed loop systems, Distortion, Bias, Signal to noise ratio, Digital systems, Teletypewriters

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE