| 摘要 |
<p>In the present invention, each image information playback unit (11, 21) detects that image display has started, on the basis of a change in digital video data (VDa, VDb), and generates frame numbers (FNa, FNb) (103, 203). One of the image information playback units (11) combines frame signals that output frame synchronization signals (FSa) (104). The other image information playback unit (21) separates the frame synchronization signals (FSa) and generates a frame number (SFNa) (205). The generated frame number (SFNa) and the frame number (FNb) generated by the second image information playback unit (21) are compared, and on the basis of the comparison results the frequency of the decoding reference clock signal is controlled (206). In a case where images are displayed by a plurality of display units (15, 25) connected to the image information playback units (11, 21), the images can be synchronized with a simple structure.</p> |
