Paging device having last-to-first sequential character memory search routine

A paging device having a message display function comprising:

• receiving means for receiving information comprising a calling number, said information may or may not include an area code;
• input means for inputting a calling number that includes an area code as a registered calling number;
• memory means having a memory area for storing plural registered calling numbers inputted by said input means;
• search detecting means for detecting a registered calling number corresponding to a calling number received by said receiving means, which may or may not include an area code, said search detecting means comparing a character string of a received calling number against a character string of each registered calling number stored in memory, wherein said comparing is performed between characters in respective character strings in a last-to-first sequential character order that begins with respective last characters of said received calling number and a registered calling number and concludes with a first character of said received calling number and a corresponding last-to-first sequential character of said registered calling number;
• and
• display means for displaying said corresponding registered calling number, including said area code, detected by said search detecting means.

A method for displaying information associated with a calling number from a transmission received in a paging device having a memory, a means for inputting information into the memory, a message display function, and a display, comprising the steps of:

• a) registering a calling number along with associated additional information in said paging device by inputting said calling number along with said additional information in a memory in said paging device, said memory means having a memory area for storing plural calling numbers and said additional information;
• b) upon receiving a transmitted calling number, detecting a corresponding calling number registered in said paging device by comparing a character string of a received calling number against a character string of each registered calling number stored in memory, said comparing performed between characters in respective character strings in a last-to-first sequential character order that begins with respective last characters of said received calling number and a registered calling number and concludes with a first character of said received calling number and a corresponding last-to-first sequential character of said registered calling number;
• and
• displaying said corresponding registered calling number detected in step b), including said area code.

A paging device having a message display function comprising:

• an RF receiver section, said receiver section receiving a transmitted calling number;
• a memory, said memory having a memory area for storing plural registered calling numbers including associated area code information;
• a central processor;
• a registered calling number search routine stored in said memory and operating said central processor to detect a stored registered calling number corresponding to a calling number received by said receiving means, said search routine comparing a character string of a received calling number against a character string of each registered calling number stored in memory, wherein said comparing is performed between characters in respective character strings in a last-to-first sequential character order that begins with respective last characters of said received calling number and a registered calling number and concludes with a first character of said received calling number and a corresponding last-to-first sequential character of said registered calling number;
• and
• a display device, said display device displaying the registered calling number including area code detected by said search routine.