Patent ID: 6091399
Filing Date: 2000-07-18
Classification: A61H,G09G

Abstract:
A display controller for refreshing an operator's vision in order to reduce eyestrain, said controller comprising:a caption data memory for storing caption data to be superimposed on a display screen for indicating a timing to change a picture displayed on said display screen into another picture;a video memory for storing data supplied from a CPU (Central Processor Unit) to be displayed on said display screen;at least one picture memory for storing picture data for refreshing the operator's vision to reduce eyestrain, wherein said at least one picture memory includes a compensation color memory for storing data for displaying a compensation color image in nine colors in a range from color phase number 13 to color phase number 21 of the Ostwald Color Ring are ranged in order;a picture selector for selecting picture data to be displayed on said display screen from among data stored in said video memory and data stored in said at least one picture memory;a picture synthesizing circuit for synthesizing video data to be displayed on said display screen by superimposing said caption data onto picture data selected by said picture selector;, anda control circuit for controlling said picture selector according to an operator's indication.