Abstract: A system for use with D2-MAC/ packets contains, on the one hand, a transmitting part formed by a pick-up member (1) for producing said pictures constituted by a plurality of picture elements or samples distributed over even and odd lines, a filter member (22) for filtering the samples of the filtered samples, a sub-sampling member (20) for taking certain samples from the output of the filter member and a transmission circuit (5) for transmitting through the channel the certain samples taken and, on the other hand, at least one receving part constituted by a receiving circuit (10), an interpolation member (41) for recovering samples on the basis of the certain samples received, and a first display circuit (50) for the recovery of a high-definition picture; the sub-sampling member (20) is designed to take from the pictures supplied by the pick-up member a predetermined number of samples in three consecutive fields.

Abstract: A transmission system for TV transmission in the D2 MAC/packet mode includes a transmission part formed by an arrangement (1) for supplying pictures constituted by a plurality of picture elements or samples distributed over even and odd lines, a filter member (22) for filtering the samples of the filtered samples, a sub-sampling circuit (20) for taking certain samples from the output of the filter member, and the output of a transmitter circuit (5) for transmitting through the channel the samples taken, and also includes at least one receiving part constituted by a receiving circuit (10) for receiving the samples taken, an interpolation member (41) for recovering samples from the samples received and a first display circuit (50) for converting the recovered and received samples into a high-definition restituted picture.