LUT output for graphics display

Details LUT output for graphics display LUT output for graphics display

1986-02-28

1989-04-04

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340703, 340747, 340799, 340721, G09G 116

Patent

active

048189790

ABSTRACT:
A scanning display signal generating system for a plurality of planes includes a first look up table addressed by a first set of the planes, and a second look up table addressed by a second set of planes. A logic unit receives the outputs of the tables and provides a display signal which is a selected logical combination of the outputs. A function control unit provides a control signal to the logic unit to select the desired logical combination. A large number of planes are thus displayed using small LUT memory components, providing display values in real time to the scanner. The output of one look up table may be provided as a control signal to the logic unit. In one embodiment the first look up table is addressed by text planes, and an output therefrom provides the control signal for suppressing the output of the second look up table.

REFERENCES:
patent: Re31200 (1983-04-01), Sukonick et al.
patent: 4429306 (1984-01-01), Macauley et al.
patent: 4599610 (1986-07-01), Lacy
patent: 4639768 (1987-01-01), Ueno et al.
patent: 4673929 (1987-06-01), Nelson et al.
patent: 4682297 (1987-07-01), Iwami
J. D. Foley and A. Van Dam, Fundamentals of Interactive Computer Graphics, Jul., 1984, pp. 132-133, FIG. 3.37 and pp. 489-491, FIGS. 12.5-12.8.

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