| 摘要 |
A digit rate reducing method in the transmission of video-telephone signals, wherein each frame is scanned by means of two consecutive fields comprising each the lines of same parity, each frame dot being represented by a word of n, in particular 3, binary digits comprising transmitting a frame every three frames, storing a frame of each parity at the receiving equipment in a frame storage device, systematically freshening-up a stored frame by the next transmitted frame of same parity, and regenerating intermediate frames by interpolating between the stored frames, further comprising forming a pseudo-field In with opposite parity to a stored field Tn by interpolating between Tn and the stored field Tn+3 or Tn-3, and regenerating an intermediate field Tn+1 or Tn-1 from In and Tn+3 or Tn-3, respectively. |
