Method for encoding and extended composite television signal with crosstalk compensation and apparatus for decoding

A method for providing an extended television signal from a plurality of conventional television signal components and an additional television signal, comprising the steps of:

• obtaining from said conventional television components a low frequency luminance signal;
• obtaining from at least said additional television signal a precompensating luminance crosstalk error signal;
• combining said low frequency luminance signal and said precompensating luminance crosstalk error signal to form a precompensated low frequency luminance signal;
• and
• encoding said conventional television components, said precompensated low frequency luminance signal, and said additional television signal to form said extended television signal.

A method for providing an extended television signal from a plurality of conventional television signal components and an additional television signal, comprising the steps of:

• obtaining at least one crosstalk-free television signal component from said conventional television components;
• obtaining at least one crosstalk signal from said additional television signal;
• calculating a precompensation signal from said at least one crosstalk signal and said at least one crosstalk-free television signal component;
• combining said precompensation signal with at least one of said conventional television components to form a precompensated television component;
• and
• encoding said conventional television components, said precompensated television component, and said additional television signal to form said extended television signal.