US PATENT SUBCLASS 348 / 666
.~.~.~ Including adaptive artifacts removal (e.g., switchable trap or LPF in luma channel)

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
663  DF  .~ Chrominance-luminance signal separation {2}
665  DF  .~.~ Including comb filter (e.g., using line, field, frame delays) {3}
666.~.~.~ Including adaptive artifacts removal (e.g., switchable trap or LPF in luma channel)

DEFINITION

Classification: 348/666

Including adaptive artifacts removal (e.g., switchable trap or LPF in luma channel):

(under subclass 665) Subject matter including an apparatus for altering the output of the comb filter when the comb filter is incapable of cleanly separating the signals.

(1) Note. For a comb filter to cleanly separate Y and C, the composite signals must be correlated (e.g., Y1[end subscrpt]+C1 and Y2[end subscrpt]-C2 will produce Y by adding and produce C by subtracting only if Y1[end subscrpt]=Y2 and C1[end subscrpt]=C2).