US PATENT SUBCLASS 348 / 434
.~.~.~ Including information in sync, blanking, or overscan

Current as of: June, 1999
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348 /   HD   TELEVISION

384  DF  BANDWIDTH REDUCTION SYSTEM {7}
426  DF  .~ Format type (e.g., HDTV or EDTV) {3}
432  DF  .~.~ Added video information in standard channel format (e.g., compatible EDTV) {3}
434.~.~.~ Including information in sync, blanking, or overscan {1}
435  DF  .~.~.~.~> During vertical blanking interval

DEFINITION

Classification: 348/434

Including information in sync, blanking, or overscan:

(under subclass 432) Subject matter wherein the added video information occupies a time interval not occupied by the normal display video.

(1) Note. Overscan is active video which is normally hidden by the face plate.