Digital Y sub 2, (U + or - V): Further tests

The digital Y sub 2, (U + or - V) system is an efficiency way of distributing a color television signal in digital form and could be used as an international exchange standard. This report describes subjective tests which show that, when using an analog YUV input, the system can produce better PAL and SECAM signals than conventional analog coders. The tests also confirm the results of earlier tests which showed that, when operating with a PAL input, good quality SECAM pictures can be obtained; alternatively, the orginal PAL signals can be re-formed essentially unchanged.