VIDEO AND AUDIO SYNCHRONIZATION

摘要

The present invention relates to a device (1) comprising at least a first control block (2), a second control block (3), a bus (9) between said first control block (2) and said second control block (3) for transmitting information between said first control block (2) and said second control block (3), electro-acoustic converter (5) adapted to said first control block (2) for generating audible signal on the basis of an audio frame, video presentation means (3.8, 4) for presenting video information on the basis of video frames, and a synchronizing parameter (3.12) for synchronizing the presentation of video information to the presentation of audio information. Said first control block (2) is adapted to transmit a request message to said second control block (3) for requesting an audio frame to be transmitted from said second control block (3) to said first control block (2). The second control block (3) also comprises a message handler (3.7) adapted to detect said request message and to increment the value of the synchronizing parameter (3.12) after a certain amount of audio frames are transmitted from said second control block (3) to said first control block (2), and a determinator (3.9) to examine the value of the synchronizing parameter (3.12) to determine the timing of the presentation of a video frame. The invention also relates to a system, a method and a computer program product.