| 摘要 |
An Internet Protocol Television (IPTV) Set-Top Box (STB) is provided to efficiently use a time gap caused by a channel switching. The IPTV STB may request a network switch to perform a channel switching operation so that a national service broadcast stream of a second channel is received, when a channel selection signal for the second channel is received while a national service broadcast stream of a first channel is received. Additionally, the IPTV STB may transmit a local service broadcast stream received from a broadcast stream receiver to a display device.
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