| 摘要 |
PURPOSE:To provide data position detecting circuit in the frame format of a digital transmission system in which it is necessary to provide only one counter regardless of the number of the channels of signals transmitted based on the reference of an SONET(Synchronous Optical NETwork) which is a wide band ISDN being a digital transmission system. CONSTITUTION:This circuit is equipped with an H1 and H2 latch circuit 20 which extracts the position information PV of each channel of inputted signal DATA by latching header parts H1 and H2. Then, the detected position information PV1... PVn of each channel is compared with an SPE address counted by an SPE counter 7, and when it.
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