ASYNCHRONOUS ABSORPTION PROCESSING SYSTEM

摘要

PURPOSE:To reduce circuit scale by using a program control type signal processor to execute the coding/decoding of two signals synchronizing with synchronous signals different in cycle slightly from each other. CONSTITUTION:Flag signal generators 11 and 14 produce flags of level ''1'' for a period during which synchronizing signals 1 and 2 arrive and the 2nd signal processing is started. A state detecting circuit 29 detects the states of flags 1 and 2 and starts an action loop when the flag 1 is set at level 1 to perform the 1st signal processing. Then the 2nd signal processing is carried out if the flag 2 is set at level ''1'' after the 1st signal processing is over. Then the operation waits for that the flag 1 goes to level ''A'' after the level ''0'' and the 2nd signal processing end. The 2nd signal processing is executed if the flag 2 goes to level ''1'' when the flag 1 is set at level 1. The action loop is set to an end state after the level ''0'' and the 2nd signal processing are over.