| 摘要 |
<p>An input digital video signal (rows A, E and H) representing a series of input frames (A1, A2, ... ) with at least some of the input frames each having a first picture portion having a first acquisition characteristic (such as 60Hz, 2:1) and a second picture portion having a second acquisition characteristic (such as 30 Hz, 1:1) is processed to produce an output video signal representing a series of output frames having generally the same acquisition characteristic (such as 24Hz, 1:1). The method comprises the steps of distinguishing between the first and second picture portions in the input frames (for example by determining the difference (row C) between input fields (a1, a2; a3, a4; ... ) of a pair, or by detecting a key signal accompanying the input video signal) and processing the first and second picture portions differently (rows E to G and rows H to J) to produce the output frames. <IMAGE></p> |
