Radio pager receiver capable of informing whether or not memory backup is correct

Abstract From the Canadian patent

In a radio pager receiver which comprises a memory having a message area and an additional area and a message processor for processing a message signal into messages to store the messages in the message area a, specific datum is written (S6) in the additional area by the message processor. Although the message processor and the memory are activated by main electric power of a power supply circuit, only the memory is backed up by backup electric power of a backup power source. When the memory and the message processor are activated after once deactivated, the message processor judges (S2) whether or not the specific datum is correctly kept. The message processor controls display (S3 and S4) …