Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1979-09-28
1981-08-18
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340792, 340748, G06F 314
Patent
active
042849888
ABSTRACT:
This disclosure relates to a digital video display system wherein a control element is provided that includes position and count registers to specify the initial position of a scan line and the number of scan lines displayed which registers are supplied with incoming data to specify the position of each character line so that the position of a character image on display can be adjusted upwardly or downwardly to give the appearance of smooth scrolling.
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.
REFERENCES:
patent: 3406387 (1968-10-01), Werme
patent: 3422420 (1969-01-01), Clark
patent: 3611348 (1971-10-01), Rogers
patent: 3643252 (1972-02-01), Roberts, Jr.
patent: 3742482 (1973-06-01), Albrecht et al.
patent: 3749965 (1973-07-01), Bowles
patent: 3787833 (1974-01-01), Rogers
Grunewald Paul
Parker Marshall M.
Seitz Charles L.
Stafford Irvin G.
Burroughs Corporation
Curtis Marshall M.
Peterson Kevin R.
Young Mervyn L.
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