| 摘要 |
<p>PURPOSE:To reduce a hardware quantity for the control of a speech path, by combining a circuit which performs a copying operation by using a random readout type memory circuit and a non-block self-routing speech path which selects a path. CONSTITUTION:By constituting a buffer circuit 201 of the random readout memory circuit, the data part of a bit of communication information A is read out by copying for several times, and furthermore, a header part including different differential addresses is read out from the memory 202, and by inputting the data part and the header part in a form that they are synthesized to a self-routing speech path via a transmission line 219, the bit of communication information can be copied, and is distributed with the said speech path. Since non-blocking property can be guaranteed completely in the speech path, no collision between data occurs. A control circuit 208 recognizes the arrival interval of the communication information in advance at the time of setting a call, and controls the copying operation so as to be completed within the arrival interval. In such a way, it is possible to constitute a perfect non-block type self-routing speech path large in scale and having a copying function.</p> |
