System for controlling the effects of noise in television receivers

A circuit for controlling the effects of noise signals in television receivers, the circuit comprising:

• input circuitry for receiving an RF television signal and generating a composite baseband signal;
• at least one noise compensation circuit that receives said composite baseband signal and compensates for noise components in said composite baseband signal;
• and
• a control circuit, which is coupled to said at least one noise compensation circuit, and which selectively enables said at least one noise compensation circuit;
• said at least one noise compensation circuit comprising:
• a first circuit that detects an amplitude of said composite baseband signal;
• and
• a second circuit that detects a high frequency luminance signal component of said composite baseband signal.

In a television receiver having detection circuitry for receiving a composite television signal having an amplitude modulated broadcast picture signal component and a high frequency luminance signal component, the detection circuitry comprising:

• a first comparator that senses when the amplitude of the amplitude modulated broadcast picture signal exceeds a first predetermined value;
• a second comparator that senses when the amplitude of the amplitude modulated broadcast picture signal is less than a second predetermined value;
• and
• a third comparator that senses when the high frequency luminance signal exceeds a third predetermined value.

A circuit for controlling the effects of noise signals in television receivers, the circuit comprising:

• input circuitry that receives an analog RF television signal and generates a composite baseband signal;
• at least one noise compensation circuit that receives said composite baseband signal and compensates for noise in said composite baseband signals;
• and
• a user controlled control circuit, coupled to said at least one noise compensation circuit, and capable of selectively enabling said at least one noise compensation circuit.