| 摘要 |
PURPOSE:To speed up the processing of a data by reading plural data having different data length through the output of a code length counter and the result of the accumulation. CONSTITUTION:A code data outputted from a microcomputer 25 is latched to a latch circuit 31 via a data bus 26, a two-way bus driver 30 and outputted one by one bit from a data selector 32 in synchronizing with the counter operation of a bit counter 33. The code length counter 35 counts a timing pulse in synchronizing with an output operation of a data selector 32 and this count value is outputted from a switching circuit 34 according to the polarity of an output bit from a data selector 32. An adder circuit 36 accumulates this output together with a latch circuit 36. The output of the adder circuit 36 and the count value of the code length counter 34 are applied to an ROM circuit 38 so as to designate an address of each code data. |
