| 摘要 |
PURPOSE:To save hardware greatly by outputting variable-length codes, word by word, by employing a code converting means of converting fixed-length codes into variable-length ones and also outputting the variable-length codes in a shifted state. CONSTITUTION:When a fixed-length code is inputted, a code converting circuit 11 outputs a variable-length code corresponding to the code, and an output signal shifted by the extent which corresponds to a shift signal from a control circuit 12 is inputted to an eight-bit shift register 7 and a selecting circuit 8. The 1st variable- length code is not shifted, and an effective-bit set register 9 inputs one bit of the variable-length code, for example; when the next fixed-length code is inputted, a shift-1 signal is supplied to a shift control input, so the circuit 11 outputs the variable-length code shifted by one bit to input an effective bit to the register 9. Thus, the shift control varies successively to effective bits to the register 9 eight times, to that an output is generated through an output register 10. |
