RECOMMENDATION ITU-R BT.796 - Parameters for enhanced compatible coding systems based on 625-line PAL ...
1 Picture enhancement techniques
    1.1 Coder requirements for accommodating wide aspect ratio signals
    1.2 Coder requirements for reducing cross-effects and making optimal use of the signal spectrum
    1.3 Ghost cancellation
    1.4 Coder requirements for increased resolution
    1.5 Data signalling
2 Sound enhancement methods
ANNEX 1 - Factors which will influence the choice of parameters
1 Picture enhancement techniques
    1.1 Wide aspect ratio coding
    1.2 Reduction of cross-effects
    1.3 Ghost cancellation
    1.4 Increased resolution
    1.5 Data signalling
2 Sound coding