Video Imaging on the Plasma Display Panel.

摘要

The plasma display panel is a versatile bi-level device capable of combining alpha-numerics and graphics in the same display because of its inherent memory and random write and erase feature. The ability to reproduce continuous tone pictures would have several current applications in the area of interactive visual communication systems and computer aided instruction. Many techniques have been suggested to allow gray scale graphics generation on the panel, among them being ordered dither. A review of various gray scale methods and the advantages of ordered dither as a universal algorithm are presented. The design considerations, operation, and results of a low cost, ordered dither interface to realize 65 levels of intensity with a CCTV vidicon camera on a 16 bit parallel panel are given. A review of simple data compression methods that provide a 50 to 80% reduction in storage requirements is presented and the possible implementation of a character plotting code on PLATO-type systems is discussed.