Digital radio telephone for a digital mobile radio communication system

Abstract

A digital radio telephone comprises a radio portion for receiving a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting the encoded digital signal, a control signal processing portion for decoding the demodulated encoded digital signal to obtain the control information, a telephone number information detecting means for detecting whether the decoded control information includes mate telephone number information, a memory for storing the telephone number information, a time information management means for specifying an incoming time of the telephone number information to output a time information, and a memory management means for recording the telephone number information corresponding to the time information into the memory.

1. A digital radio telephone comprising:
 a radio portion for receiving a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting said encoded digital signal;    a control signal processing portion for decoding said demodulated encoded digital signal to obtain said control information;    a telephone number information detecting means for detecting, before a speech path is established with an incoming call apparatus, whether the decoded control information includes incoming telephone number information;    a memory for storing said telephone number information, said memory having an incoming recording memory and a registering memory, with said incoming recording memory storing a telephone number and a time information of an incoming telephone call;    a time information management means responsive to said telephone number information detecting means for specifying an incoming time of said telephone number information to output said time information; and    a memory management means for recording said telephone number information corresponding to said time information into said memory, with said telephone number being compared to previously stored telephone numbers, and being stored in a first memory location if said telephone number is not in said incoming recording memory, and being deleted from an existing memory location and being stored in a first memory location if said telephone number is currently in said incoming recording memory.    
     
     
       2. The digital radio telephone of  claim 1 , further comprising:
 an identification information memory for storing identification information corresponding to said telephone number information stored in the memory.    
     
     
       3. A digital radio telephone, comprising:
   a receiver configured to receive a radio signal modulated by an encoded digital signal including control information demodulating and outputting said encoded digital signal;        a control signal processor configured to decode said demodulated signal to obtain said control information;        a telephone number information detector configured to detect whether the decoded control information includes incoming telephone number information;        means for specifying an incoming time of the telephone number information to output said time information;        a memory including an incoming storing memory configured to store incoming telephone number information detected by the means for specifying and time information of a plurality of incoming time specified by the means for specifying, and a registering memory configured to store a pre - registered telephone number and a corresponding identifier; and        means for storing said telephone number information and said incoming time into said incoming storing memory, independent of whether or not the incoming call is answered or not at the time of the incoming call.     
     
     
       4. The digital radio telephone according to  claim 3 , for use with an external line and an extension line, comprising:
   means for judging whether said telephone number information is from the extension or from the external line; and        means for adding an external line calling information to said telephone number information according to a judging result to output as new telephone number information.     
     
     
       5. The digital radio telephone according to  claim 3 , wherein said means for specifying includes means for deleting the telephone number information already registered from the incoming storing memory and means for storing the telephone number information detected by said means for specifying into the incoming storing memory in the event that the telephone number information detected by the means for specifying is registered in the incoming storing memory. 
     
     
       6. The digital radio telephone according to  claim 3 , further comprising:
   means for supplying an operating signal; and        a display configured to display information during operations, wherein        means for supplying includes means for instructing said display to display identification information corresponding to said telephone number together with the telephone number information in the event that the same telephone number as the telephone number information displayed on said display portion is stored in the registering memory when one of the telephone number information stored in the incoming storing memory is displayed on said display.