| 摘要 |
PURPOSE:To restore an original high-definition television signal by either interpolating in terms of space or interpolating temporally omitted signals of subsample receiving signals from transmitted high-definition television receiving signals after they are subsampled. CONSTITUTION:A screen of a high-definition television picture from an input terminal is partitioned into blocks A, B and C, and in accordance with picture actions of the blocks A, B and C a selection deciding signal is made and overlapped with a transmitting signal. On the other hand, the receiving side extracts a selection deciding signal from a subsampling transmission signal by utilizing a data separator circuit 6, and by the signal, either n-frame discriminating system or joint-use deciding system is selected and specified. By the selected and specified deciding system, information on the movement of a screen of a high-definition television picture signal at every block is detected 4. By the detected information, space or temporal interpolation is executed at every block and moitted signals are interpolated. |
