Sinusoidally modulated dot-matrix data display system

Details Sinusoidally modulated dot-matrix data display system Sinusoidally modulated dot-matrix data display system

1987-08-04

1990-04-03

Moore, David K.

Communications: electrical

Land vehicle alarms or indicators

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

340728, 340731, 358 13, 358 21R, G09G 116

Patent

active

049144260

ABSTRACT:
Display of alphanumeric characters symbols, graphs and other information in a dot-matrix form on a CRT is enhanced by modulating the CRT beam sinusoidally at twice the dot matrix clock rate to produce two full cycles of sinusoidal modulation for each dot space. The amplitude of the modulation is selected to be one-fourth the raster scan spacing of the CRT, whereby two sinusoidal cycles of modulation in each dot space more fully fills the space allocated to a dot display in the vertical direction as the electrons beam scans the dot space in the horizontal direction.

REFERENCES:
patent: 4589012 (1989-05-01), Songer
patent: 4639766 (1987-01-01), Schine
patent: 4684937 (1987-08-01), Schine
patent: 4697177 (1987-09-01), Schine
patent: 4710764 (1987-12-01), Van Cang
patent: 4712102 (1987-12-01), Troopes et al.
patent: 4719456 (1988-01-01), Sproch et al.
patent: 4737693 (1988-04-01), Schine

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