| 摘要 |
When a switching target device receives a media output indication from a sender device, a switch ( 401 ) connects with contact B, which causes all image data stored in an extended media buffer ( 402 ) to be inputted in a decoder ( 201 ), starting from the first frame (which is an I-frame) of the image data. The decoder ( 201 ) decodes the image data, starting from the I-frame, and stores a reconstructed image in a reconstructed-image buffer ( 202 ). A reconstructed image required for decoding video picture data outputted from a media buffer ( 2108 ) is held in the reconstructed-image buffer ( 202 ). Thus, when device switching occurs, the decoder ( 201 ) can immediately start decoding regardless of whether video picture data inputted from the media buffer ( 2108 ) is an intraframe.
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