US PATENT SUBCLASS 315 / 384
.~.~.~.~ Ray blanking

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  DF  .~.~ With additional control of cathode ray {3}
383  DF  .~.~.~ Intensity control of ray {3}
384.~.~.~.~ Ray blanking

DEFINITION

Classification: 315/384

(under subclass 383) Subject matter in which the cathode-ray is turned-off during normal operation of the cathode-ray tube.

(1) Note. Subject matter in which a cathode-ray is turned-on or turned-off by deflecting the cathode-ray to a portion of the cathode-ray tube where a trace will not form due to lack of a phosphor material is excluded from this subclass and may be found in subclass 379 for broad control of a cathode-ray.

SEE OR SEARCH CLASS

348, Television,

634+, for the blanking of the cathode-ray beam of a picture tube in television systems which may also claim the

deflection circuitry for the cathode-ray beam in a television image signal processing circuitry.