Look-up table

Details Look-up table Look-up table

1986-09-29

1989-05-30

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340750, 340799, G09G 128, G09G 114

Patent

active

048355275

ABSTRACT:
In the present invention, a full look-up table for 32 bits is disclosed. The look-up table is for interfacing the output of the memory frame buffer with a color monitor in a digital, color graphics display apparatus. The look-up table duplicates some of the output lines of the memory frame buffer as the input to the look-up table. The input lines and the duplicated input lines are supplied as address input lines to a first memory bank. The output of the first memory bank at the address selected by the input lines are received by a second memory bank as the address input lines therefor. The output of the second memory bank is supplied yet to the third memory bank as the address input lines thereto. The output of the third memory bank forms the output of the look-up table.

REFERENCES:
patent: 4258361 (1981-03-01), Hydes et al.
patent: 4574277 (1986-03-01), Krause et al.
patent: 4591842 (1986-05-01), Clarke, Jr. et al.
patent: 4598282 (1986-07-01), Pugsley
patent: 4649380 (1987-03-01), Penna
patent: 4673929 (1987-06-01), Nelson et al.
patent: 4745407 (1988-05-01), Costello
patent: 4942474 (1988-05-01), Knierim
"Engineering Notes CAT 1600 Series", by Digital Graphic Systems, Inc.

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