Sub-picture control device and its method in PIP TV

摘要

The present invention relates to an apparatus and method for controlling a sub-screen in a PIP TV. In general PIP TV, a sub-screen control device for sequentially displaying images of a channel selected in a sub-screen is not added, In order to solve the conventional drawback that the image is not sequentially displayed on the sub screen and the viewer returns to the image of the previously selected channel if the viewer does not recognize the selected broadcast channel after the channel change, Screen control means for sequentially displaying a video signal of a previously selected broadcast channel on a sub-screen in accordance with a set time when a viewer views the sub-screen simultaneously with a sub-screen control device including a sub-screen control means in a conventional PIP TV, To provide the desired broadcast time at the time set by the viewer even if the viewer does not recognize the selected channel It can be viewed by selecting the board.