Patent ID: 8813128
Filing Date: 2014-08-19
Classification: H04N

Abstract:
1. A method of providing a multi-decoder based channel surfing service for a digital broadcasting system connected by a network to a broadcast receiver, the method comprising: extracting a video signal from each AV (audio/video) signal for a plurality of broadcast channels, at a headend; computing overall viewer ratings and viewer ratings for predefined genres using statistics of viewership information received from multiple broadcast receivers, at the headend; generating a first and a second channel-surfing video source at the headend, the first and second channel-surfing video sources including sub-video of broadcast channels having viewer rating rankings higher than a predefined ranking from among the plurality of extracted video signals, the first channel-surfing video source including sub-videos of broadcast channels having a high-ranking viewer rating for a different genre from that for the second channel-surfing video source; and transferring the first and the second channel-surfing video sources and source configuration information regarding the first and the second channel-surfing video sources to the broadcast receiver from the headend, the source configuration information including a location and a size of the sub-video include in each of the first and second channel-surfing video source and a broadcast channel number, name, and locator information of the sub-video, wherein the broadcast receiver simultaneously decodes the first and the second channel-surfing video sources by way of a first and a second decoder, and if a key input by a user is received, the broadcast receiver generates a channel surfing-screen by editing the sub-video included in the first and the second channel-surfing video sources, wherein the broadcast receiver simultaneously decodes the first and the second channel-surfing video sources by way of a first and second decoder, and if a key input by a user is received, the broadcast receiver generates a channel surfing-screen by editing the sub-videos including in the first and the second channel-surfing video source, wherein the generating of the channel-surfing video sources is to generate the channel-surfing video sources in a number corresponding to a number of decoders equipped in the broadcast receiver.