Patent ID: 7559079

Claim:
A real-time service system using an interactive data communication, the system comprising: a plurality of digital set-top boxes of users for replaying service contents selected by the user in real time through a television by being supplied through a telephone line of a very high-data rate digital subscriber line (VDSL), wherein the service contents comprise audio/image signals from the telephone line, wherein the audio/image signals are transmitted to an MPEG data storing block, and wherein the plurality of digital set-top boxes of users further comprise an audio/image switching block for replaying through the television the service contents received from the MPEG data storing block and selected by the users, wherein each of the plurality of the digital set-top boxes comprises a screen generation block for employing an image signal of anyone channel among the plurality of channels of images signals from the audio/video switching block as a main screen and for employing the other channels of the image signals as a subsidiary screen, an OSD synthesizing block for realizing an appropriate graphic OSD on the screen from the screen generation block by comparing a content of an overlay memory of RGB divided in a predetermined ratio with a specific color key value, a video output block for displaying the image screen from the OSD synthesizing block to a television monitor, on audio digital/analog converting block for converting the audio signals of the active channels to the main screen supplied from the audio/video switching block, and an audio output block for outputting the sound from the audio digital/analog converting block to outside through a television speaker; a number of system operating device installed by a predetermined region unit and connected to the plurality of digital set-top boxes of the users in a corresponding region via a telephone fine of the VDSL for supplying the service contents required at a corresponding set-top box in real time by the interactive data communication with an arbitrary digital set-top box; and a service providing device for storing various service contents received from a contents providing device and for supplying the corresponding service contents to a corresponding system operating device in real time in response to a service content request from the system operating device inputted through the Internet.