Precompensated stroke cathode ray tube display system apparatus

Details Precompensated stroke cathode ray tube display system apparatus Precompensated stroke cathode ray tube display system apparatus

1980-12-30

1984-05-15

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340736, 340735, G09G 114

Patent

active

044491247

ABSTRACT:
With a directed beam imaging system, a method is presented employing a low-pass filter in the positional signal path, a time-discrete positional signal, and precompensation of this time-discrete signal for phase and amplitude errors of the overall positional control circuitry. As a consequence of this method, the uncompensatable vector nonlinearities of the prior art vector stroke are obviated, the useable system bandwidth or stroke per unit time is extended beyond the prior art to the maximum driveable frequency, and in many text and graphics applications fewer strokes are needed to produce the desired image.

REFERENCES:
patent: 3333147 (1967-07-01), Henderson
patent: 3364479 (1968-01-01), Henderson et al.
patent: 3437869 (1969-04-01), Cobb et al.
patent: 3540032 (1970-11-01), Criscimagna et al.
patent: 3659282 (1972-04-01), Tada
patent: 3786482 (1974-01-01), Puckett, Jr. et al.

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