| 摘要 |
PROBLEM TO BE SOLVED: To provide a reproduction system capable of reconstructing a high-definition television signal from a compatible video signal, in which no aliasing artifact is generated or it is not necessary to transmit auxiliary signal information. SOLUTION: A compatible standard-bandwidth 2-1 interlaced television signal is converted from interlaced to progressive scan, the progressive scan frame rate corresponds to the interlaced scan field rate, each progressively scanned frame has twice as many scan lines as in each interlaced field, the line rate of the progressively scanned signal is increased by interpolation, including appropriate post-filtering and the resulting signal is spectrally expanded in the vertical domain. Vertical bandwidth enhancement simulates a wide bandwidth vertical detail signal. The vertical detail signal is self-derived from the processed compatible signal itself. COPYRIGHT: (C)2008,JPO&INPIT
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