Contactless Electronic Communication Device with Optional Auxiliary Power Source

Abstract

A device having a card ( 40 ) and a support (PC). The card has (a) no internal battery, (b) a single antenna ( 10 ) that receives electromagnetically data and power, (c) a data processor, (d) rectifying and filtering circuitry receiving the electromagnetic input and supplying at output terminals (A, B) a voltage to the processor. and (e) two terminals ( 36, 38 ) on an external surface of the card which are connected to the output terminals (A, B). The support is mechanically and electrically connectable to the card. It has (a) a power source that may be a battery, (b) surface terminals that mate with the card's external terminals, (c) a switch for connecting the power source to the surface terminals, and (d) a mechanism for holding together the card and support with the card's and the support terminal's electrically engaged to one another.

1 . A contactless electronic electromagnetic communication device of the type comprising:
 a module having:
 means for receiving electromagnetic signals, 
 means for processing the received electromagnetic signals, and 
 means for rectifying and filtering the received electromagnetic signals in order to supply, at two output terminals, a supply voltage to the processing means, 
   
       and further comprising:
 means for supporting an electrical power source, and 
 means for connecting the electrical power source to the output terminals of the rectifying and filtering circuit. 
 
     
     
         2 . A device according to  claim 1 , wherein the connection means include a switch for establishing and cutting off the connection between the power source and the terminals of the rectifying and filtering circuit. 
     
     
         3 - 9 . (canceled)