Television receiver with picture in picture and non-linear processing

摘要

A video switch (22) combines a first video signal with a compressed second video signal for application to a display unit (30) to provide "picture-in-picture" images in which the first video is displayed in a main picture area of the display and the compressed second video signal is displayed as an inset picture within the main picture area. A non-linear processor (20), connected between an output of the video switch and an input of the display unit, enhances selected features of the combined video signal displayed by the display unit. Circuit means (50) are provided for controlling the non-linear processor so that non-linear processing is applied to displayed images only in the main picture area and not in the inset picture area.