| 摘要 |
PURPOSE:To enable error correction of small deterioration of reproduced picture quality by obtaining an interpolating sample from a line of one frame before a line in which an error occurred. CONSTITUTION:The first sampling is made at higher frequency than Nyquist frequency, the second sampling that thins every one sample changing phase by 180 deg. for one field, and recording is made at rate 1/2 of the first sampling rate. When reproducing, an error information signal is sent from an error decoder to a controlling circuit 64. Writing of data of a line in which an error occurred in a frame memory 56 is inhibited by the output of the circuit 64. Y component is composed from a line of one field before by switches 57 and 58 and a field selecting circuit 65. C component is composed from a line of one field before, and after phase inversion 66, added 61 with the Y component through a switch 67 to form an interpolating picture element, and the reproduced picture element and interpolating picture element are outputted through a switch 62. |
