| 摘要 |
<p>In multiplexing a plurality of coded data, degrees of difficulty of coding of the data are measured (500V,500A), the coding rate for each of the data is decided (506) by allotting a certain target bit rate with a ratio of the each of the measured degrees of difficulty of coding so that the bit rate of the multiplexed data becomes equal to the target bit rate, the data is then coded (306V,306A) in response to the decided coding rates, and the coded data is multiplexed (312) before being outputted to a transmission line (210A) or recording medium (210B). Thus, the bit rate of the outputted data is always kept at the target value to improve the usage rate of the transmission line. <IMAGE></p> |
