BLINK CODING FOR INFORMATION DISPLAY

TEN MEN SCANNED CATHODE-RAY-TUBE DISPLAYS TO SEARCH FOR DESIGNATED TARGET ITEMS. SEARCH TIME INCREASED WITH INCREASING DISPLAY DENSITY, AND WAS 50% FASTER WHEN A 3-CPS BLINK WAS IMPOSED ON ITEMS OF THE TARGET CLASS. THE BLINKING OF NONTARGET ITEMS WAS ALMOST EQUALLY EFFECTIVE, INDICATING THAT BLINK CAN BE USED EITHER AS AN INCLUSION OR EXCLUSION CODE. IN COMPARISON WITH STEADY, NONBLINKING DISPLAYS, SEARCH TIME WAS NOT SIGNIFICANTLY DIFFERENT FOR DISPLAYS IN WHICH ALL ITEMS BLINKED, OR IN WHICH A RANDOM SELECTION OF ITEMS BLINKED. IT IS CONCLUDED THAT FOR VISUAL SEARCH TASKS OF THE KIND REPORTED, THERE IS NO MARKED DELETERIOUS EFFECT OF BLINK CODING ON SYMBOL LEGIBILITY, AND NO MARKED INTERFERENCE ATTRIBUTABLE TO IRRELEVANT BLINK. /AUTHOR/

• Supplemental Notes:
  • PROJ NO AF-5180
• Corporate Authors:

  MITRE Corporation

  Bedford, MA  United States 
• Authors:
  • SMITH, S L
  • Goodwin, N C
• Publication Date: 1971-10

Media Info

• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Cathode ray tubes; Coding systems; Information display systems; Information management; Information, data, and knowledge; Oscilloscopes; Visual perception
• Old TRIS Terms: Cathode ray oscilloscopes; Coding; Displays
• Subject Areas: Data and Information Technology; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00223973
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: May 29 1973 12:00AM