CRT scan system using a lookup table.

摘要

Fast scan and slow-scan deflection circuits are provided for a cathode ray tube for use in a printer application. The CRT is operated in the raster scan mode and uses a precision electromagnetic deflection yoke. The geometric distortion requirement of a very stringent maximum of 1% is accomplished by using lookup tables with electrically programmable memories that are used to provide the precise scan voltage for any location on the CRT. <IMAGE>