RASTER DISPLAY SYNCHRONIZED WITH A.C. POWER MAINS

RASTER DISPLAY SYNCHRONIZED WITH A.C. POWER MAINS

A display device includes improved raster scan apparatus which provides for the video display of information in timed synchronization with cycles of AC power. The raster scan apparatus includes a circuit which monitors the periodicity of the AC input power to the display device. This circuit is oper...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: ERNEST PAUL LEE
Format: Patent
Sprache:eng
Schlagworte:
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A display device includes improved raster scan apparatus which provides for the video display of information in timed synchronization with cycles of AC power. The raster scan apparatus includes a circuit which monitors the periodicity of the AC input power to the display device. This circuit is operative to initialize certain raster scan logic which thereafter authorizes the next raster scan sweep. In this manner, each raster scan is synchronized with respect to the cyclical AC power. This synchronization eliminates visible distortion on the video output of the display device.