发明名称 Method and apparatus for displaying color on a computer output device using dithering techniques
摘要 A method and apparatus for filling an area of a computer display with a preselected color is provided. Typical computer systems software provides the capability to represent 256 different intensities of a color. However, many color displays cannot support the displaying of 256 intensity levels. The present invention provides a method and apparatus for mapping the higher number of intensity levels supported by the systems software to the lower number of intensity levels actually supported by the display. In a preferred embodiment, four picture elements (pels) of a display are logically grouped together to create a super-pel. By varying the intensity level in each pel of a super-pel, the effective number of intensity levels for a given color can be increased.
申请公布号 US5138303(A) 申请公布日期 1992.08.11
申请号 US19890430503 申请日期 1989.10.31
申请人 MICROSOFT CORPORATION 发明人 RUPEL, WESLEY O.
分类号 G09G3/20;G09G5/02 主分类号 G09G3/20
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