Information exchange for hand-held electronic devices

Abstract

A method for a first electronic device having first and second antennas for communicating with a second device is disclosed. The method comprises determining which one of the first and second antennas of the first device is stimulated by an electromagnetic field generated by the second device; and transmitting one of first and second types of information according to which one of the first and second antennas is the determined antenna.

1 . A method for a first device having first and second antennas for communicating with a second device, the method comprising:
 determining which one of the first and second antennas of the first device is stimulated by an electromagnetic field generated by the second device; and   transmitting one of first and second types of information according to which one of the first and second antennas is the determined antenna,   wherein if the first antenna is the determined antenna, the first type of information is transmitted and if the second antenna is the determined antenna, the second type of information is transmitted.   
     
     
         2 . The method of  claim 1 , further comprising:
 receiving a signal from the second device, the signal including an identification of the second device;   determining if the identification of the second device exists in a database before transmitting the first or second type of information; and   if the identification does not exist in the database, terminating communication with the second device or transmitting a third type of information without transmitting the first or second type of information.   
     
     
         3 . The method of  claim 1 , wherein the first device has first and second faces and the first and second antennas are placed respectively at the first and second faces with a first electromagnetic shield placed between the first and second antennas. 
     
     
         4 . The method of  claim 3 , wherein the first device further includes a third antenna placed in the second face along with the second antenna and a second electromagnetic shield is placed between the second and third antennas. 
     
     
         5 . The method of  claim 4 , further comprising
 detecting that the second antenna is stimulated a predetermined time after the determined antenna is detected;   detecting that the third antenna is stimulated; and   transmitting a fourth type of information different from the first and second types of information.   
     
     
         6 . A first electronic device, comprising:
 a first antenna;   a second antenna; and   a microprocessor:   wherein the microprocessor is configured to determine which one of the first and second antennas is stimulated by an electromagnetic field generated by a second electronic device; and transmit one of first and second types of information according to which one of the first and second antennas is the determined antenna,   wherein if the first antenna is the determined antenna, the microprocessor is configured to transmit the first type of information and if the second antenna is the determined antenna, the microprocessor is configured to transmit the second type of information.   
     
     
         7 . The first electronic device of  claim 6 , wherein the microprocessor is configured to determine if a security element is enabled before transmitting the first or second type of information; and if the security element is not activated, the microprocessor is configured to transmit a third type of information without transmitting the first or second type of information. 
     
     
         8 . The first electronic device of  claim 6 , wherein the microprocessor is configured to receive a name and a password from the second device; if the name and password exist in a database, transfer data stored in the data base relating to the received user name; and if the name and password do not exist in the database, transmit a third type of information. 
     
     
         9 . The first electronic device of  claim 6 , further comprising first and second faces and the first and second antennas are placed respectively at the first and second faces with a first electromagnetic shield placed between the first and second antennas. 
     
     
         10 . The first electronic device of  claim 9 , further comprising a third antenna placed in the second face along with the second antenna and a second electromagnetic shield is placed between the second and third antennas. 
     
     
         11 . The first electronic device of  claim 10 , wherein if the microprocessor detects that the second antenna is stimulated a predetermined time after the determined antenna is detected and that the third antenna is stimulated afterward; the microprocessor is configured to transmit a fourth type of information different from the first and second types of information.