Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1997-06-04
1998-04-28
Wu, Xiao
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345150, G09G 506
Patent
active
057451044
ABSTRACT:
An object of the present invention is to realize a palette control circuit which generates inconspicuous noise using simple circuitry and without reducing processing efficiency. A palette control circuit comprises a palette 5 used for color conversion, a selector 4 that is connected to the address input of the palette and selects image memory output or address data for use in accessing the palette, a holding circuit 6 for temporarily holding the output of the palette 5, and a control circuit 7 for issuing an input select instruction to the selector 4, access control signals to the palette 5, and a data holding instruction to the holding circuit 6. For displaying normal image memory, the control circuit 7 instructs the selector 4 to select image memory output and allows the holding circuit 6 to pass palette output as it is. For accessing the contents of the palette, the control circuit 7 instructs the holding circuit 6 to hold the preceding output of the palette 5 and allows the selector 4 to select address data for use in accessing the palette.
REFERENCES:
patent: 4183046 (1980-01-01), Dalke et al.
patent: 4484187 (1984-11-01), Brown et al.
patent: 4853681 (1989-08-01), Takashima
patent: 4975861 (1990-12-01), Fujimoto
patent: 5083257 (1992-01-01), Kennedy
patent: 5140312 (1992-08-01), Ishii
Fujitsu Limited
Wu Xiao
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