Video signal processing apparatus

A video signal processing apparatus comprising:

• high and low level slicing units that divide a luminance signal into first and second level signals, wherein the first level signal is higher than the second level signal;
• first and second high frequency detectors that detect first and second high frequency bands respectively using the first and second level signals;
• a logic circuit that logically processes the first and second high frequency bands from the first and second detectors and determines a prescribed frequency band;
• and
• a luminance signal processing unit that reduces a contrast of the luminance signal within the prescribed frequency band relative to the luminance signal outside the prescribed frequency band.

A video signal processing apparatus, comprising:

• a video signal separating unit that receives a composite video signal and outputs a luminance signal;
• a gate pulse generator that detects a high contrast, high frequency band based on the luminance signal and outputs a gate pulse signal, the gate pulse generator comprising,
• first and second units that divide the luminance signal into a high and low level signals,
• first and second frequency detectors that detect first and second frequency bands using respective signals outputted from the first and second units, and
• a logic circuit that logically processes the first and second frequency bands outputted from the first and second detectors to output the gate pulse signal;
• a luminance signal processing unit that adjusts a contrast of the high frequency band in the luminance signal based on the gate pulse signal from the gate pulse generator;
• and
• a matrix unit that receives the contrast adjusted luminance signal from the luminance signal processing unit and outputs respective R, G and B signals.