| 摘要 |
A high definition television (HDTV) for displaying an image contained in a broadcasting signal of a mutually different broadcasting system is provided. The HDTV restores a first image signal being an image signal contained in a HD digital broadcasting signal and a second image signal being an image signal contained in a NTSC analog broadcasting signal which are input from an antenna and an external input port, and format-converts each restored image signal into an image signal having a predetermined frame format. An image signal synthesizer including two memories and a timing signal generator time-base-compresses the format-converted first and second image signals so as to correspond to a main picture and a sub-picture of a PIP image to be displayed, and synthesizes the first and second image signals into a single PIP image signal. A CRT displays a PIP image contained in the PIP image signal on a screen. |
