| 摘要 |
<p>PURPOSE:To decrease the error rate of data and to provide an error correcting function by limiting the continuation of 0-section length in terms of probability by utilizing the statistical properties of an analog signal. CONSTITUTION:Counters 7 and 8 output wire and read addresses. A counter 9 generate a[1]of D output when the number of 1 in 16 bits in no less than 8 and a [0]in other case. Memories 20 and 21 are placed in data writing and reading operations in turns, and tristate bus buffers 22 and 23 select only readout outputs. A buffer 24 is supplied with a flag bit generated by the counter 9. Similarly, readout data is inverted as well as the D-FF of the tristate bus buffer 27 of a 25 and a 26. Consequently, the continuation of 0-section length is limited in terms of probability, the error rate of data is decreased, and a modulation system is provided with an error correcting function.</p> |
