Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1992-07-27
1993-10-12
Weldon, Ulysses
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345 89, G09G 300
Patent
active
052529592
ABSTRACT:
A multi-gradation display control method comprises activating selected dots in selected of a plurality of defined submatrices together constituting the entire dot matrix display, e.g., a two dimensional LCD panel, whereby a distribution of dispersion field of dots within defined submatrices are activated to display an image in multi-gradations. A defined dot submatrix has a predetermined distribution of individual activated or unactivated dots in a single frame to form a predefined gradation pattern. The predetermined distribution of dots is changed in succeeding frames of the entire dot matrix so that the dot positions activated or unactivated in a succeeding frame are not the same dot positions activated or unactivated in a previous frame. Preferably, the dot position activated in any given frame of a defined n dots by n dots submatrix are not adjacent to dot positions activated in a previous frame and are not adjacent to dot positions to be activated in a succeeding frame. At least two different two dimensional sizes of submatrices are provided to form a series of multi-gradations. As a result, defined dot matrices of different sizes are determined for different gradations wherein different gray scale representations can be produced without substantial pattern interference or objectionable fringes annoying to the naked eye.
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Carothers, Jr. W. Douglas
Liang Regina
Seiko Epson Corporation
Weldon Ulysses
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