Picture-out-picture control apparatus and method thereof

摘要

A method and an apparatus for converting a video signal having a predetermined aspect ratio into a signal adapted for a television receiver having a wider aspect ratio. An analog to digital converter converts the received video signal into a digital signal. A main picture processor converts the video signal of the first aspect ratio into a main screen of the television receiver. A picture-out-picture processor converts the video signal having the first aspect ratio into at least one picture-out-picture screen of the television receiver. A multiplexed picture formation portion multiplexes the video signals for the main and picture-out-picture screens into a video signal having the second aspect ratio appropriate for the television receiver. A control signal generator controls the picture-out-picture processor and the multiplexed picture formation portion. When an NTSC broadcast is displayed on the television receiver having a 16-to-9 aspect ratio, the pictures are prevented from being spread to the left and right sides of the screen. Utilization of the POP screens facilitates search or comparison of the important pictures when watching the TV.