DOUBLE-CHANNEL PROCESSING METHOD AND APPARATUS FOR A PICTURE-OUTSIDE-PICTURE OR PICTURE-IN-PICTURE TYPE TELEVISION RECEIVER

摘要

Double-channel processing method and apparatus for a picture-outside-picture (POP) or picture-in-picture (PIP) type television receiver. In the updating time period, the present broadcasting program signal is displayed on the secondary channel region continuously as a moving picture, and at the beginning of the next time period, the last frame of the present broadcasting program signal is displayed on the secondary channel region as a still picture, and the secondary channel is tuned to next channel so that the tuned present broadcasting program signal is displayed on the next secondary channel region as a moving picture. Once receiving user's channel selection, it stops picture updating of secondary channel region and superimposes markers of the broadcasting program signal onto the secondary channel regions respectively. When user selects a marker of the broadcasting program signal in the secondary channel region, the main channel region will be switched to display the broadcasting program signal corresponding to the selected channnel. It is convenient for users to browse all the broadcasting programs. For the POP or PIP type television receiver, user only need double keystrokes to switch the main channel to the desired television channel.