Accession Number : AD0619213

Title :   DEVELOPMENT OF A COLORED TELETYPE TAPE DISCRIMINATION SYSTEM.

Descriptive Note : Final rept.,

Corporate Author : SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CALIF

Personal Author(s) : Ensminger,R. L.

Report Date : SEP 1964

Pagination or Media Count : 32

Abstract : In some types of Navy teletype communications installations, messages in the form of paper tapes are fed into one tape reader for transmission if unclassified material, and into a separate tape reader for encoding and transmission if classified. The Bureau of Ships is investigating a system of color coding of paper tapes as a technique for safeguarding against unintentional transmission of classified information on the unclassified equipment. The Visibility Laboratory previously constructed a laboratory breadboard of a photoelectric apparatus capable of sensing the color of the paper tape and disabling the tape reader in the presence of tape of the wrong color (AD-600 912). The present report describes the design and construction of an operational breadboard unit for mounting on the AN/UGC-6 teletypewriter.

Descriptors :   (*TELETYPE SYSTEMS, MONITORS), SECURE COMMUNICATIONS, TAPES, COLORS, COLORIMETRY, PHOTOELECTRIC MATERIALS, PHOTOTUBES, OPTICAL SCANNING, OPTICAL FILTERS, CLASSIFICATION, READING MACHINES, TYPEWRITERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE