Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1983-04-08
1986-11-25
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340707, 340734, G09G 116
Patent
active
046252029
ABSTRACT:
An apparatus and a method for generating cursors in a multi-dimensional graphics display system uses line definition signals, each of which is representative of where along the horizontal display dimension one or more scan lines intersect a cursor to be presented. The apparatus includes a line definition memory for providing one or more line definition signals, and a line definition pointer circuit which responds to a scan line location by the vertical dimension, for selecting the line definition signal representative of the scan line. A generation circuit provides a cursor video signal at each horizontal location, as indicated by the selected line definition signal, where the represented scan line intersects the cursor to be presented.
REFERENCES:
patent: 4354184 (1982-10-01), Woborschil
patent: 4367465 (1983-01-01), Mati et al.
patent: 4370645 (1983-01-01), Cason et al.
patent: 4386410 (1983-05-01), Pandya et al.
patent: 4404554 (1983-09-01), Tweedy, Jr. et al.
patent: 4417239 (1983-11-01), Demke
Peterson James R.
Richmond Scott C.
Curtis Marshall M.
Dellett John P.
Hulse Robert S.
Meador Terrence
Tektronix Inc.
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