Improvements in apparatus for Automatic Correction of Nuance of colour television receiver to reduce effects on nuances outside the desired Correction Scale

摘要

The present Invention relates to improvements in apparatus of Automatic Correction of Nuance of colour television receiver.To reduce effects on nuances outside the scale correction; characterized by a limiter that has a Signal input Circuit, which is coupled to the output Circuit of the AmplifierChrominance specifier and a output Circuit which is coupled to the chrominance Signal amplitude Limited virtually Constant; a phase detector that has a First and second CIrcuitos which are coupled to the input Circuit respectively, the output of the amplifier circuit Chroma and Hue,And that has an output Circuit that detects the amplitude variations of the components of chrominance Signal with Phase adjustments in the scale of a Modulator with a desired correction;Output circuit in which the answer to the chrominance Signal amplitude Limited received at one of its input Circuits,By coupling the output of the amplifier circuit Chroma and Modulated by amplitude Variations that exceed a polarization of deviationReceived on one of its input Circuits,By coupling the output of the phase detector Circuit and a Filtering Circuit and combination of signals which are input Circuits which are connected to, respectively,The output Circuits of the Modulator Circuit and Nuance, and has an output circuit in which appears The Colour subcarrier in the Second Phase adjustment.Coupled to the input Circuit of the whole Circuit of Phase Shift.