A digital TV set-top box is a conversion device that converts digital TV signals into analog signals. The digital TV set-top box has become an embedded computing device with a complete real-time operating system and powerful CPU computing power to coordinate and control each set-top box. Part of the hardware facilities, and provides an easy-to-operate Graphical User Interface (Graphical User Interface, GUI), such as the enhanced TV electronic program guide, to provide users with graphic program introductions and background information.