Hue correction circuit for a digital TV receiver

摘要: Abstract of the Disclosure A digital hue correction circuit for correcting color TV chrominance signals includes means dividing smaller magnitudes first and second mixture by larger to produce quotients representing tangents over range zero 45 degrees. The polarity are applied transposing degree angle tangent values at least 90 angles. transposed generating coefficients sines cosines angles which vector is be rotated effect correction. a multiplier combiner corrected I' Q' according equations = I cos .DELTA..PHI. ? Q sin .DELTA..PHI.Q' .DELTA..PHI.. where: signed, signed.