| 摘要 |
<p>It is an object of the invention to provide an interpolation device which, in receiving and reproducing simultaneous digital broadcasting, interpolates and thus corrects video portion and audio portion responsible for a decreased picture quality or a decreased sound quality. The interpolation device comprises an interpolation control unit 9 and interpolation units 7, 9. The interpolation control unit 9 detects an error signal contained in a video signal and an audio signal of a program being received and reproduced, supplies a switchover period control signal SWv indicating an error period Äv of the video signal to the interpolation unit 7, and a switchover period control signal SWa indicating an error period Äa of the audio signal to the interpolation unit 8. The interpolation unit 7 extracts a video signal of simple moving image corresponding to the error period Äv, generates from an extracted video signal an interpolation video signal adapted to the format of a video signal being received and reproduced, thereby interpolating the error signal contained in the video signal. The interpolation unit 8 extracts an audio signal of simple moving image corresponding to the error period Äa, generates from an extracted audio signal an interpolation audio signal adapted to the format of an audio signal being received and reproduced, thereby interpolating the error signal contained in the audio signal.</p> |
