Raster CRT Controller to Drive a Plasma Panel
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
High resolution plasma panels make attractive devices for graphic displays, but the complicated interface requirements of the panel require either a microprocessor or a large amount of hardware for drawing graphics. While using a microprocessor is relatively inexpensive, it is very slow for drawing graphics. Random logic is faster drawing and otherwise excellent, but is expensive and requires extensive card area. A raster graphics CRT controller (CRTC) can be used to drive the plasma panel, is affordable and produces excellent performance results. The CRTC works as follows. As seen in the block diagram, a raster graphics CRTC 1 is used to drive a plasma panel 2. The CRTC 1 has a 128K-byte frame buffer 3 that it draws the raster graphics image in.