Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1990-01-12
1993-10-19
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345 89, 345149, G09G 510, G09G 336
Patent
active
052549828
ABSTRACT:
A method of displaying an image which builds upon the error propagation method for mosaic color displays propagates error between elements diagonally for a mosaic color display having diagonal rows consisting of monochromatic elements. In the method, called "pel interleaving", the "error" propagated into the first element in the diagonal row changes with each new image or frame processed. More specifically the error propagated into each diagonal's first element increases incrementally with each frame processed until it exceeds the maximum element intensity value, in which case it is started anew by subtracting the maximum value. The incremental increasing of this initial error, in the binary display case, leads to the spatial drift of "on" elements along the diagonals. If all preload values are equally likely, the time integrated ensemble of the displays approaches the exact contone image as the number of displayed images increases. Thus, if the processing is fast, so that the eye integrates a number of displayed images for the same input image, the display perceived using the present image approaches the actual contone of the input image.
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Feigenblatt Ronald I.
Powell Carl G.
Brier Jeffery
International Business Machines - Corporation
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