| 摘要 |
A television receiver permits a sub-picture screen (Ss) to be displayed within a main picture screen (Sm) in a picture-in-picture fashion. The television receiver comprises a sub-picture circuit for selectively reproducing on the sub-picture screen (Ss) either a picture from a broadcast channel or a picture from an external input video signal. The sub-picture circuit includes a viewer operable channel selector for choosng a particular broadcast channel for reproduction on the sub-picture screen (Ss) and means for causing the sub-picture circuit to reproduce a picture from a broadcast channel on the sub-picture screen (Ss) if the sub-picture channel selector is operated at a time when the picture based on the external input video signal is being reproduced on the sub-picture screen (Ss). |
