| 摘要 |
<p>#CMT# #/CMT# The process involves evaluating a coupling current (k) between a transponder and a terminal. Information (Icmax) related to energy supplied in an optimum coupling position is deduced. The transponder is comprised of oscillating circuits in upstream of a rectification unit to provide a direct current voltage. Information related to a level of the direct current voltage is measured and stored for a value (R20) of resistive load constituted by circuits of the transponder on the oscillating circuits. #CMT# : #/CMT# Independent claims are also included for the following: (1) a method for managing energy of an electromagnetic transponder in a field of a terminal (2) an electromagnetic transponder comprising an oscillating circuit. #CMT#USE : #/CMT# Process for evaluation of energy that is susceptible to be extracted from a magnetic field by an electro magnetic transponder (claimed) i.e. transmitter-receiver, in a field of a reading/writing terminal such as global system for mobile communications (GSM)telephone and personal digital assistant, producing the magnetic field. Uses include but are not limited to validate a smart card, an electronic transport document, an electronic passport and an electronic label. #CMT#ADVANTAGE : #/CMT# The process evaluates the supplied energy without need of carrying out exchange of data between the terminal and the transponder, and evaluates the coupling current with respect to the optimum coupling, so as to eliminate characteristics of the terminal and make the evaluation independent of the terminal, so that the transponder with an evaluation unit of the coupling can function with any existing terminal. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a functional block diagram illustrating an implementation of a process of evaluation and management of energy. Icmax : Information IREQ : Current for execution of request k : Coupling current R20, R21 : Values of resistive load REQ : Request.</p> |
