(under subclass 364) Subject matter wherein the cathode-ray tube includes a target, a cathode- ray beam source, and an electrical circuit. The electrical circuit includes circuitry connected to the target to correct or regulate the deflection of the cathode-ray beam through the deflection means as a function of the beam hitting the target.
(1) Note. This subclass provides for retrace control due to impingement of the cathode-ray on a target.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12.1, and 13.1, for cathode-ray tubes with secondary emission stages and plural cathode-rays, respectively, which may include means on the target thereof for control of the deflection circuit.
SEE OR SEARCH CLASS
358, Facsimile,
67+, for a cathode-ray tube type color television display having circuitry to sense the ray beam to control or indicate the position of the beam.
