| 摘要 |
<p>PURPOSE:To recover a television picture with few deterioration in picture guality, even in case of generating the omission, or the error of a data signal on a transmission line, by evading the use of a division signal having the omission, or the error, and performing the interpolation and the synthesis of adjacent picture elements by the division signal. CONSTITUTION:So that a transmission is performed by dividing a signal in a block unit making the best use of the feature of the television signal, such as a field unit, a line unit, or a picture element unit, etc., at a transmission side, a synchronizing signal extraction circuit 113 is provided. At a reception side, when it is decided that the omission, or the error is generated by an error correction threshold signal, a control signal selection circuit 14 to interpolate the signal by the division signal of an adjacent field, an adjacent line, or an adjacent picture element having the strong approximate correlation characteristics of the signal is provided as a substitute, Also, as for the extraction of a clock from a reception data signal, the use of the division signal decided as the one having the omission, or the error, is evaded, and a reception signal selector 15 to perform the clock extraction from a normal division signal is provided. In such way, it is possible to recover the television picture with few deterioration in the picture element even in case of generating the omission, or the error of the data signal on a part of the transmission line.</p> |
