| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly perform a channel switching operation in IP multicast broadcasting. <P>SOLUTION: A video reception device 1 has a video processing unit 4, a video processing unit 8, a control program 16, an operation signal reception unit 23 and an AV decoding unit 24. While video data received from a delivery server 3A is decoded by a video decoding unit 6 in the video processing unit 4 and output by a video audio output device 2, a communication processing unit 11 in the video processing unit 8 accesses a delivery server 3B and joins a multicast group in advance. By decoding video data of a TOP screen and a program of a channel delivered from the delivery server 3B by a video decoding unit 10 in advance, when an operation signal instructing channel switching is received by the operation signal reception unit 23, the video data decoded by the video decoding unit 10 in advance is output. <P>COPYRIGHT: (C)2012,JPO&INPIT |
