METHOD AND APPARATUS FOR IMPLEMENTING TRANSLUCENT MENU SCREEN IMAGE IN DEVICE CAPABLE OF CONNECTING HD SET-TOP BOX TO UHD TV

摘要

Provided is a method capable of using a conventional HD or full-HD set-top box, of which UHD broadcast processing is impossible, by connecting the set-top box to a UHD TV, and displaying a translucent menu screen image. The method according to the present invention comprises: an image reception step of receiving an OSD image and transparency information from an HD set-top box through a first HDMI interface and receiving a TV image of a UHD resolution through an Ethernet interface; a transparency application step of capturing the OSD image so as to generate a capture screen image, and generating a color key screen image in which the transparency information has been applied to the capture screen image; a menu combining step of combining the color key screen image with the TV image; and an output step of outputting, to the UHD TV through a second HDMI interface, the combined image.