| 摘要 |
An interlaced video signal may be combined with a progressive video signal, such as a graphics signal, by converting the interlaced video signal into a progressive signal. A new frame of the converted progressive signal is constructed from each field of the interlaced signal. The graphics signal is interlaced, then combined with the converted progressive signal. The combined signals may then be transmitted to a display, such as a television set. The interlaced video signal, which is transmitted at twice its incoming speed, remains temporally correct so that operations, such as scaling and 3:2 pulldown, may be performed with minimal resulting artifacts. The small amount of memory used to combine the signals may be embedded in the receiver circuitry.
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