Wireless terminal device

Abstract

A pager is disclosed which includes, in addition to a message receiving function, a data generation program responsive to an operation for generating and storing data in the memory; an optical communication circuit for generating and transmitting a first optical signal indicative of the message or the generated data in accordance with a data selection command to another of the pager and for directly receiving a second optical signal including second data from another pager and outputting the received data; and a receiving control program for storing the received data in the memory in response to a receiving command. It may further comprise: an ID code generation program for generating a first ID code according to the data selection command; a data attaching program for attaching the ID code to data to be transmitted to another pager. The received data is stored according to the received ID code. A light intensity changing circuit may change an intensity of the first optical signal. Moreover, it is judged whether it is possible to communicate with another of the pager from the received data; and the judging result is informed the user. The corresponding methods are further disclosed.

What is claimed is:  
     
         1 . A pager comprising: 
 radio wave receiving means for receiving a radio wave paging signal including message data and address data;    storing means;    message receiving means for receiving said message data from the received radio wave paging signal and storing the received message data in said storing means when said address data indicates said pager;    data generation means responsive to an operation for generating data and storing said data in said storing means;    optical communication means for converting transmission data into a first optical signal and directly transmitting said first optical signal to another of said pager and for directly receiving a second optical signal including second data from said another of said pager and converting said second optical signal into received data;    transmission control means for reading either of said message data or said data from said storing means in accordance with a data selection command as said transmission data and transmitting said transmission data through said optical communication means in response to a transmission command; and    receiving control means for storing said received data in said storing means in response to a receiving command.    
     
     
         2 . The pager as claimed in  claim 1 , further comprising timing control means for controlling said transmission controlling means to control a timing of transmitting said transmission data.  
     
     
         3 . The pager as claimed in  claim 1 , further comprising: 
 identification code generation means for generating a first identification code in accordance with said data selection command;    data attaching means for attaching said identification code to said transmission data, said transmitting means transmitting said transmission data and said identification code, wherein said received data including a second identification code; and    detection means for detecting said second identification code from said received data, said receiving means storing said received data in said storing means at one of storing areas in accordance with the detected second identification code.    
     
     
         4 . The pager as claimed in  claim 1 , further comprising light intensity changing means for changing an intensity of said first optical signal of a high level in accordance with an intensity changing command signal.  
     
     
         5 . The pager as claimed in  claim 1 , further comprising: 
 judging means for judging whether it is possible to communicate with another of said pager from said received data; and    informing means for informing the judging result from said judging means.    
     
     
         6 . The pager as claimed in  claim 5 , wherein said optical communication means comprises test signal generation means for generating a test signal in response to a test signal command and timer means, said transmitting means operating said optical communication means to increase said intensity of light when said transmitting means does not receive said transmission command within a predetermined interval measured by said timer.  
     
     
         7 . A method of communication between pagers, comprising the steps of: 
 receiving a radio wave paging signal including message data and address data;    providing a memory;    receiving said message data from the received radio wave paging signal and storing the received message data in said memory when said address data indicates said pager;    generating data and storing said data in said memory in responsive to an operation;    converting input data into a first optical signal and directly transmitting said first optical signal to another of said pager;    directly receiving a second optical signal including second data from said another of said pager;    converting said second optical signal into received data;    reading either of said message data or said data from said memory in accordance with a data selection command indicative of either of said message data or said data as transmission data;    transmitting said transmission data as said first optical signal in response to a transmission command; and    storing said received data in said memory in response to a receiving command.    
     
     
         8 . The method as claimed in  claim 7 , further comprising the step of: 
 controlling a timing of transmitting said transmission data.    
     
     
         9 . The method as claimed in  claim 7 , further comprising the steps of: 
 generating a first identification code in accordance with said data selection command;    attaching said first identification code to said transmission data;    transmitting said transmission data and said first identification code, wherein said received data including a second identification code; and    detecting said second identification code from said received data;    storing said received data in said memory at one of storing areas in accordance with the detected second identification code.    
     
     
         10 . The method as claimed in  claim 7 , further comprising the step of: 
 changing an intensity of said first optical signal of a high level in accordance with an intensity changing command signal.    
     
     
         11 . The method as claimed in  claim 7 , further comprising the step of: 
 judging whether it is possible to communicating with another pager from said received data; and    informing the judging result.    
     
     
         12 . A method of communication between pagers, comprising the steps of: 
 generating transmission data in response to an operation;    storing said transmission data;    converting said transmission data into a first optical signal and directly transmitting said first optical signal to another of said pagers in response to a command;    directly receiving a second optical signal including second data from said another pager; and    storing said second data.