Patent ID: 8134910

Claim:
A method of multiplexing asynchronous bitstreams, the method comprising: selecting a reference bitstream from among bitstreams that are coded to have different frame lengths by a plurality of coders; determining a start point of each bitstream; dividing a portion of the bitstreams except for the reference bitstream from p s m (n) to p e m (n), where p s m (n) is a pointer indicating a start point for division in the reference bitstream corresponding to the n th frame and the divided bitstream corresponding to the m th frame to be multiplexed and p e m (n) is a pointer indicating an end point for division in the reference bitstream corresponding to the n th frame and the divided bitstream corresponding to the m th frame to be multiplexed; dividing a portion of the bitstreams except for the reference bitstream from p s m+1 (n) to p e m+1 (n), where p s m+1 (n) is a pointer indicating a start point for division in the reference bitstream corresponding to the n th frame and the divided bitstream corresponding to the (m+1) th frame to be multiplexed and p e m+1 (n) is a pointer indicating an end point for division in the reference bitstream corresponding to the n th frame and the divided bitstream corresponding to the (m+1) th frame to be multiplexed; and multiplexing the reference bitstream and the divided bitstreams.