US PATENT SUBCLASS 348 / 637
.~.~ Retrace type

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
634  DF  .~ Picture blanking {3}
637.~.~ Retrace type

DEFINITION

Classification: 348/637

Retrace type:

(under subclass 634) Subject matter wherein the blanking is preformed during the short time period when the electron beam moves from right or bottom of a CRT to the left or top to start a new scan.

SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems,

384, for cathode-ray tube deflection circuits with ray blanking.