PSEUDO-RANDOM DOT SCAN TELEVISION SYSTEMS.

Abstract

The principal psychophysical requirements of the human eye are satisfied by a television frame frequency of 1 or 2 cycles/sec. To avoid flicker with such low frame rates, a pseudo-random dot scan is employed in conjunction with long-persistence phosphors. Experiments show that 15% dot flicker is tolerable. Ten systems are discussed, including a two-million-element picture with 4 mc/sec bandwidth; tape recording at 15 inches/sec; the continuous relaying of satellite pictures; short-wave transmission; phonevision; and very low frame rate applications that use a scan conversion system. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1964
Accession Number
AD0616275

Entities

People

  • P. Balaban
  • S. Deutsch

Organizations

  • New York University Tandon School of Engineering

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Bandwidth
  • Conversion
  • Frequency
  • Frequency Bands
  • Phosphors
  • Tape Recording
  • Tapes
  • Television Systems
  • Wave Propagation

Readers

  • Human-Computer Interaction (HCI).
  • Image Processing and Computer Vision.
  • Systems Analysis and Design

Technology Areas

  • Space