Patent ID: 8040946

Claim:
An audio/video data synchronization apparatus for transmitting decoded audio/video data to an external device without compressing the data, the apparatus comprising: a video buffer for storing decoded video data and outputting corresponding video data bits based on a control signal; an audio buffer for storing decoded audio data and outputting corresponding audio data bits based on a control signal; a mapper for converting input data bits into symbols having information of a predetermined size and successively allocating respective symbols to sub-carriers of Inverse Fast Fourier Transforms (IFFTs); at least one IFFT for subjecting input symbols to inverse fast Fourier transformation; and a buffer controller for obtaining a data amount per second ratio between the video data and audio data, the buffer controller calculating a data amount per second ratio multiplied by an integer so that there are a smallest number of null sub-carriers, no data being allocated to the null sub-carriers when symbols of video and audio data bits to be transmitted are allocated to the sub-carriers of the IFFTs, the buffer controller controlling the video and audio buffers so as to output the video and audio data bits to the mapper according to the calculated data amount per second ratio multiplied by an integer.