A term rarely used to describe ATV schemes incorporating any combination of techniques.

Techniques to Improve NTSC Compatibility

1. Monochrome and colour
1. Sampling, Aperture, and Interlace Problems
• Progressive
• High Line Rate Display
• Progressive Camera and Prefiltering
• High Line Rate Camera and Prefiltering
• Image Enhancement at the Camera
• Image Enhancement at the Receiver

2. Transmission Problems
• Ghost Elimination
• Noise Reduction
• Improved philtre Design and Adjustment

3. Changing Equipment Problems
• Gamma Correction
• Adaptive Emphasis
• Rigid Adherence to Standards

2. colour Problems
1. Improved Decoder Filtering
2. Prefiltering
3. Full Detail Decoders
4. Luminance Detail Derived from Pre-Encoded Chroma.