| 摘要 |
<p>PURPOSE: To cancel the necessity of the buffering of a digital transmission signal, and to avoid transmission delay by restoring the original code speed of an MODEM signal demodulated for transmission by a circuit network transmitter in a transmitting circuit network receiver. CONSTITUTION: A data signal received by a transmission line 108 is resolved into a digital sample by a de-packetizer 102, and supplied to a re-modulator 104 of a circuit network receiver 103. A V.29 MODEM modulated signal is generated by the re-modulator 104. Also, an error calculated result between the actual transmission code speed and a nominal code speed from the re- modulator 104 is generated by a calculating part 105. This error calculation is operated according to a prescribed flow, and a calculated resultε'm is outputted, and supplied to an integrator 106. The integrator 106 applies the integrated value of this error signal to an interpolator 107, and the number of samples per one code of an output data signal from the re-modulator 104 is adjusted. The adjusted output from the interpolator 107 is a re-modulated MODEM signal adjusted to the actual MODEM code speed.</p> |
