| 摘要 |
The present invention relates to digital television, and in particular the encoding of high-definition television (HDTV). Standard digital television pictures have a resolution of 480 x 704 pixels and display at 30 frames per second. High definition television (HDTV) differs from standard television in having a much higher resolution. The generation of digitally compressed HDTV signals requires dedicated encoding equipment due to the high sampling rates used for HDTV signals. Consequently, due to their increased complexity, HDTV encoders are substantially more complex and expensive than standard TV encoders. A standard television encoder is not capable of encoding a HDTV image due to the increased resolution and the much larger data rates associated with such large images which is outside of capacity of a standard television encoder. The present invention overcomes these problems and provides a method and apparatus for creating HDTV signals using predominantly standard television equipment. <IMAGE> |
