Accession Number : AD0483587

Title :   A TELETYPE SELECTIVE CALL SYSTEM.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Shoemaker, Hugh Louis

Report Date : MAY 1966

Pagination or Media Count : 54

Abstract : Current demands on communications facilities are necessitating conversion of existing single channel circuits to high speed, on-line encrypted, multiple channel circuits for military usage. Limited allotted frequencies and expensive cables require user sharing of most circuits, requiring selection methods to enable terminal equipment of the desired addressee. A selective call teletype device capable of operation at any commonly used speed, constructed with microcircuits, was designed and built to provide the terminal selection capability required in the multiple circuits. Small size, weight, and power requirements and the high reliability possible with microcircuits make a unit o this type attractive for conversion of existing systems as well as in the design of new equipment. (Author)

Descriptors :   (*TELETYPE SYSTEMS, SWITCHING CIRCUITS), TELETYPE SYSTEMS, AUTOMATIC, SELECTION, INTEGRATED CIRCUITS, PATTERN RECOGNITION, DECODING, TIMING CIRCUITS, GATES(CIRCUITS), RELAXATION OSCILLATORS, RELIABILITY, TIME SIGNALS, SECURE COMMUNICATIONS, CRYPTOGRAPHY.

Subject Categories : Electrical and Electronic Equipment
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE