Compression-extension of the signal components in a multiplexed system has components

THE INVENTION CONCERNS A DEVICE FOR TRANSMITTING LUMINANCE COMPONENTS AND CHROMA A COLOR VIDEO SIGNAL. According to the Invention, IT INCLUDES AN AVERAGE 26 TO SQUEEZE THE DYNAMIC RANGE OF COMPONENTS IN USING DIFFERENT LAWS OF COMPRESSION FOR COMPONENT LUMINANCE Y AND COMPONENTS CHROMA RY, BY AND RECEIVER IS aSSOCIATED WITH IT EXPANDS THESE COMPONENTS FOLLOWING THE REVERSE OF LAWS. THE INVENTION S ' ESPECIALLY APPLIES TO TELEVISION.