| 摘要 |
PURPOSE:To simplify the constitution of a data length converter by forming a counter for counting up clocks and a serial/parallel converter for converting variable length data to fixed length data. CONSTITUTION:An input strobe pulse LD, and data length or data 1-8 are inputted to a counter 14 and a parallel/serial converter circuit 16 in a data length converter circuit. On the basis of the input, the carry of the counter is turned to the ''0'' level, an AND circuit 18 is opened and the data loaded to the circuit 16 are shifted by a prescribed value on the basis of clocks obtained during the counting of the counter by the prescribed number of times to store the shifted value in a serial/parallel converter circuit 17. The variable length data 8 are inputted to the counter 15, and after the counting by the prescribed number of times, the carry of the counter 14 is returned to the initial status. Then, the outputs of the counters 14, 15 are inputted to a logic circuit and its logical output is applied to the circuit 17. After repeating said operation by the prescribed number of times, fixed length data are outputted from the circuit 17. |
