A New Translation Procedure for the C-60M System

This paper proposes a new translation procedure which is based on a jumbogroup constitution for simultaneous multiplex transmission of telephone and videophone signals over a coaxial 60-MHz system and describes transmission characteristics of the C-60M system using the translation procedure. The translation procedure reduces group-delay distortion harmful to video transmission without changing telephone transmission capacity or without degrading telephone transmission characteristics. It is also capable of transmitting either 36 videophone signals with 1 MHz bandwidth or nine videophone signals with 4.3 MHz bandwidth.