US PATENT SUBCLASS 345 / 89
.~.~.~.~ Gray scale capability (e.g., halftone)

Current as of: June, 1999
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345 /   HD   COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS

30  DF  PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) {4}
55  DF  .~ Display elements arranged in matrix (e.g., rows and columns) {10}
84  DF  .~.~ Light-controlling display elements {6}
87  DF  .~.~.~ Liquid crystal display elements (LCD) {9}
89.~.~.~.~ Gray scale capability (e.g., halftone)

DEFINITION

Classification: 345/89

Gray scale capability (e.g., halftone):

(under subclass 87) Subject matter wherein the selective electrical control provides control of the brightness or light intensity level (i.e., shades) of the image data* to be displayed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

147, for intensity control for a generic display device.