Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1992-03-02
1993-09-07
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315403, H01J 2954
Patent
active
052432637
ABSTRACT:
In a vertical sawtooth generator of a D.C. coupled vertical deflection circuit, a vertical deflection amplifier generates a sawtooth signal. Magnitudes of the sawtooth signal in first and second instants of its trace period are determined in accordance with first and second D.C. signals, respectively. The first and second D.C. signals are adjusted during service to control the raster height and the raster centering such that while the raster height is adjusted, raster centering is not significantly affected, and vice versa.
REFERENCES:
patent: 3609219 (1971-09-01), Diehl
patent: 4272777 (1981-06-01), Fitzgerald
patent: 4277729 (1981-07-01), Rodgers, III
patent: 4686432 (1987-08-01), Berland et al.
patent: 4731564 (1988-03-01), Pan et al.
Appl. Ser. No. 843,074, filed Mar. 2, 1992 in the names of Wilber et al. and entitled Resistor-Matched Deflection Apparatus For a Video Disply.
Appl. Ser. No. 843,063, filed Mar. 2, 1992 in the name of K. R. Koblitz and entitled A Deflection Circuit Having A Controllable Sawtooth Generator.
Appl. Ser. No. 843,062, filed Mar. 2, 1992 in the names of Koblitz et al. and entitled Service Switch For Video Display Deflection Apparatus.
Appl. Ser. No. 843,075, filed Mar. 2, 1992 in the name of E. Rodriguez-Cavazos and entitled A Generator For Sawtooth Signal With Selectable Retrace Slope For A Deflection Apparatus.
Koblitz Karl R.
Rodriguez-Cavazos Enrique
Wilber James A.
Blum Theodore M.
Henig Sammy S.
Laks Joseph J.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
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