STUDIES OF DISPLAY SYMBOL LEGIBILITY. PART XVI: THE LEGIBILITY OF TELETYPEWRITER SYMBOLS ON TELEVISION

Abstract

The legibility of Long Gothic and Murray teletype symbol fonts was studied on television. Subjects identified light symbols on a dark background at four resolutions. The results showed that three special cloud-cover symbols were illegible for all resolutions studied. Under ideal conditions, 10 active lines per symbol height was the minimum recommended resolution for the alphanumeric symbols. The Long Gothic and Murray symbols were equally legible. It is recommended that more legible symbols be used for the three cloud-cover conditions.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1967
Accession Number
AD0655356

Entities

People

  • Glennis L. Bell

Organizations

  • MITRE Corporation

Tags

DTIC Thesaurus Topics

  • Air Force
  • Air Traffic Control Systems
  • Behavior And Behavior Mechanisms
  • Cameras
  • Closed Circuit Television
  • Cloud Cover
  • Clouds
  • Computers
  • Contracts
  • Control Systems
  • Governments
  • Identification
  • Neurobehavioral Manifestations
  • Standards
  • Tachistoscopes
  • Teletypewriters
  • Television Systems

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Mathematics or Statistics