| 摘要 |
<p>A video signal decoding method for obtaining aspect ratio information of a video image includes: identifying (S410) a target scan line, whose signal includes a run-in code, identification information and additional information; detecting (S420) a synchronization signal of the target scan line and accordingly determining (S430) a first working interval (R); detecting (S440) the run-in code of the target scan line in the first working interval (R) and accordingly determining (S450) a second working interval (P) and a third working interval (S); in the second working interval (P), generating a sampling clock according to the signal of the of the target scan line; generating (S470) sampled data according to the sampled clock and the signal of the target scan line; in the third working interval (S), detecting (S480) the identification information according to the sampled data to generate a detection result of the identification result; and decoding (S490) the additional information according to the sampled data and the detection result of the identification information.</p> |
