05420607 is referenced by 192 patents and cites 6 patents.

An electronic paintbrush and electronic palette which allow a user to generate images on a CRT screen in a manner which imitates traditional painting with paints on a canvas. The electronic brush has fiber optic bristles which channel light from a CRT screen to optical detectors. A microprocessor in the brush utilizes pulses generated by the incidence of the raster scan on photodiodes to determine the position of the brush, the pressure of the brush against the CRT screen, and its angular orientation about the longitudinal axis of the brush. The microprocessor utilizes color information generated by a CCD array to determine the area of contact of the brush with color swatches on the palette, and the angle between the longitudinal axis of the brush and the normal vector to the CRT screen. In an alternate embodiment the palette is also displayed on the CRT screen.

Title
Electronic paintbrush and color palette
Application Number
939109
Publication Number
5420607
Application Date
April 6, 1994
Publication Date
May 30, 1995
Inventor
Steven M Blonstein
941 Newell Rd., Palo Alto, 94303
CA, US
Robert F Miller
3925 Mesrob Ct., Modesto, 95356
CA, US
Agent
Heller Ehrman White & McAuliffe
IPC
G09G 3/02
View Original Source