Stroke written shadow-mask multi-color CRT display system
First Claim
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1. In combination:
- a multi-color, shadow-mask cathode ray tube including means for generating plural electron beams;
a plurality of video amplifier means each associated with an individual one of said plural means for generating;
a stroke-writing deflection signal generating means, means for simultaneously controlling deflection of said plural electron beams in response to the output of said deflection signal generating means, and color code means operable in synchronism with said deflection signal generating means to effect selected turn-on permutations of said plurality of video amplifier means.
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Abstract
A stroke writing generator develops selectively incremented and/or decremented horizontal and vertical deflection signals which simultaneously deflect all color associated beams of a conventional shadow-mask multi-color cathode ray tube to cause the beams to trace out a selected symbology on the tube screen. A video color code generator, operating in clock-defined synchronism with the stroke writing generator, selectively effects turn-on permutations of plural video amplifiers driving associated electron beams in the cathode ray tube to facilitate preprogrammed color tinting of the displayed symbology.
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Citations
11 Claims
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1. In combination:
- a multi-color, shadow-mask cathode ray tube including means for generating plural electron beams;
a plurality of video amplifier means each associated with an individual one of said plural means for generating;
a stroke-writing deflection signal generating means, means for simultaneously controlling deflection of said plural electron beams in response to the output of said deflection signal generating means, and color code means operable in synchronism with said deflection signal generating means to effect selected turn-on permutations of said plurality of video amplifier means.
- a multi-color, shadow-mask cathode ray tube including means for generating plural electron beams;
- 2. In a display system including a shadow-mask multi-color cathode ray tube, means for generating running digital counts respectively definitive of horizontal and vertical deflection signals to trace out a predetermined symbology on said cathode ray tube, means applying said deflection signals to respective horizontal and vertical deflection coils of said cathode ray tube, each of said running digital counts being selectively incremented and/or decremented at a clock defined rate, and means operable in synchronism with said clock defined bit rate so selectively effect turn-on permutations of respective video amplifiers driving associated electron beams in said cathode ray tube.
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5. In combination;
- a shadow-mask multi-color cathode ray tube having respective red, blue and green writing beam generation means each with an associated video amplifier, a stroke writing generator means to effect predetermined horizontal and vertical deflection increments of said cathode ray tube beams,
and means operable in synchronism with said stroke writing generator means to effect selected turn-on permutations of said associated red, green and blue video amplifiers during predefined beam deflection increment sequences as effected by said stroke writing generator means. - View Dependent Claims (6, 7, 8, 9, 10, 11)
- a shadow-mask multi-color cathode ray tube having respective red, blue and green writing beam generation means each with an associated video amplifier, a stroke writing generator means to effect predetermined horizontal and vertical deflection increments of said cathode ray tube beams,
Specification