Video noise reduction system with measured noise input

Claim 1

Television receiver apparatus, comprising: receiving means for receiving a television signal having noise superimposed thereon and for furnishing a received television signal in response thereto; first means connected to said receiving means for generating a noise signal varying, at least in part, in accordance with the amplitude of said superimposed noise; second means connected to said receiving means for generating movement signals indicative, at least in part, of desired changes in said television signal resulting from actual changes in the television image; and processing means, connected to said first means and said second means, for forming, in response to said noise signal and said movement signals, an output television signal having a noise content adjustably reduced from that in said received television signal, said processing means comprising a noise reduction circuit coupled to said second means for forming said output television signal with said noise content being adjusted in response to a control signal applied to a control input of said noise reduction circuit, and control signal generating means comprising subtraction means connected to said first means and said second means for subtracting said noise signal form said movement signals, an output of said subtraction means being coupled to said control input of said noise reduction circuit.