Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1984-12-26
1987-08-04
Brigance, Gerald L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340744, 340750, G09G 106
Patent
active
046849378
ABSTRACT:
Display of alphanumeric characters and other symbols generated in a dot-matrix form on a CRT is enhanced by modulating the CRT beam sinusoidally at the dot matrix clock rate to produce one full cycle of modulation for each dot space with a phase to display a dot on a slope between modulation maxima of opposite polarity. The phase and amplitude of the modulation is selected to place the q dots displayed in a dot space between the modulation maximum of one polarity and a maximum of opposite polarity for each dot space of an M.times.N matrix, with a depth of modulation of .+-.1/4 raster scan spacing of the CRT.
REFERENCES:
patent: 4359728 (1982-11-01), Mahoney
patent: 4400791 (1983-08-01), Kitado
patent: 4464656 (1984-08-01), Nakamura
patent: 4481509 (1984-11-01), Sasaki et al.
patent: 4516119 (1985-05-01), Fukata
patent: 4544922 (1985-10-01), Watanabe et al.
patent: 4555191 (1985-11-01), Uojo
Brigance Gerald L.
Kovalick Vincent P.
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