US PATENT SUBCLASS 315 / 11.5
.~.~.~ Color convergence controlled by photodetector

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

1  DF  CATHODE RAY TUBE CIRCUITS {11}
10  DF  .~ With radiant energy sensitive control means {1}
11  DF  .~.~ With secondary emission stage in the cathode-ray tube {1}
11.5.~.~.~ Color convergence controlled by photodetector

DEFINITION

Classification: 315/11.5

Color convergence controlled by photodetector:

(under subclass 10) Subject matter including a light-responsive device which controls the convergence in response to a characteristic of an image or pattern produced on the screen.

SEE OR SEARCH THIS CLASS, SUBCLASS:

368.11+, for color convergence control circuitry for a cathode-ray tube, absent photodetector control.

SEE OR SEARCH CLASS

250, Radiant Energy,

549, for radiation responsive control circuitry for a cathode-ray tube including pre-photocell optical structure.