Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1977-09-26
1979-06-12
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340793, 340798, G06K 1520
Patent
active
041582004
ABSTRACT:
This disclosure relates to a digital video display system wherein the various characters to be displayed are displayed in the form of images of the complete character rather than the standard dot-matrix pattern of the prior art. A character generator in the display system stores signals representing the various characters to be displayed which are retrieved from storage in response to a character code. The signals are in the form of a binary code having a sufficient number of bits to represent a different number of levels of gray-scale or luminance values for the various picture elements making up the character image. The binary codes thus retrieved from storage are supplied to a video synthesizer that generates the video signal to display the character images which may be displayed in a number of different modes including white-on-black, black-on-white, black-on-gray, and white-on-gray as well as different combinations of such modes to represent a cursor.
REFERENCES:
patent: 3778811 (1973-12-01), Gicca et al.
patent: 3812491 (1974-05-01), Barraclough et al.
Grunewald Paul
Parker Marshall M.
Seitz Charles L.
Stafford Irvin G.
Burroughs Corporation
Peterson Kevin R.
Trafton David L.
Young Mervyn L.
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