US PATENT SUBCLASS 315 / 379
.~.~ With additional control of cathode ray

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

1  DF  CATHODE RAY TUBE CIRCUITS {11}
364  DF  .~ Cathode-ray deflections circuits {16}
379.~.~ With additional control of cathode ray {3}
380  DF  .~.~.~> Control only at turn-on or turnoff of circuit {1}
382  DF  .~.~.~> With focusing of ray {1}
383  DF  .~.~.~> Intensity control of ray {3}

DEFINITION

Classification: 315/379

(under subclass 364) Subject matter wherein the cathode-ray tube has associated with it (1) circuitry for the regulation of the energization of the cathode-ray tube, (2) circuitry for the regulation of the cathode-ray beam current, density, or velocity in the tube, (3) circuitry for focusing the cathode-ray beam in the tube, or (4) circuitry under the control of the electrical circuit or the deflection means for controlling the cathode-ray beam of the tube.

(1) Note. The term focusing includes the concentration of an electron beam or the converging or diverging of the rays of the beam by an electrostatic or magnetic lens.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.1, for cathode-ray tube circuits which may include regulation of secondary emission in a cathode-ray tube.

13.1, for cathode-ray tube circuits which may include regulation of the concentration of a plurality of cathode-ray beams.

368, for cathode-ray tube convergence circuits for concentration of a plurality of cathode-ray beams, e.g., in color cathode-ray tubes. 369, for cathode-ray tube deflection circuits wherein the target controls deflection of the cathode-ray beam.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

530+, for tubes with a particular source of power or bias voltage and subclass 549 for miscellaneous circuits with hum or interaction prevention means.

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

20+, for data responsive selective intensity control in connection with driving a cathode-ray tube.

348, Television,

284+, 325+, 377+, 379, 380+, and 805+ for regulation means or circuitry to control the scanning cathode-ray beam of a television system.