Transmitting and receiving system for high-efficiency coding of a composite television signal.

摘要

A communication system includes a transmitting system (2) and a receiving system (4). The transmitting system (2) separates a composite color video signal into a luminance signal and a carrier chrominance signal without demodulating the composite color video signal into a component color video signal, obtains luminance values from the luminance signal, and amplitude values and phase values from the carrier chrominance signal and processes these values in an orthogonal transform fashion. Then, the transmitting system (2) encodes coefficients, provided by the orthogonal transform processing, to generate a code word sequence signal and transmits the same through a communication medium. The receiving system (4) receives and decodes the code word sequence signal through the communication medium to reproduce the composite color video signal from the decoded signal. <IMAGE>