Contact-free display peripheral device for contact-free portable object
First Claim
1. A peripheral display device for display of information associated with the use of a contactless portable object, comprisingat least one chip, a means for receiving energy and said information, said receiving means comprising a flat coil which is not connected by ohmic contact to said portable object, at least one energy storage means, and a display means, wherein an antenna of said portable object and the receiving means are capable of acting as the primary and secondary, respectively, of a transformer when said portable object receives energy and information from a reader of said portable object through electromagnetic coupling.
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Accused Products
Abstract
A peripheral display device for a portable contactless object such as a smart card (10) enabling information associated with the use of this portable object to be displayed. This peripheral device includes at least one chip, a display (16) and a receiver for receiving energy and information (18), not connected by an ohmic contact to the portable object. This receiver is a flat coil which plays the role of the secondary of a transformer, the primary of which is formed by the antenna (14) of the portable object, when the latter receives energy and information from a portable object reader via electromagnetic coupling.
31 Citations
11 Claims
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1. A peripheral display device for display of information associated with the use of a contactless portable object, comprising
at least one chip, a means for receiving energy and said information, said receiving means comprising a flat coil which is not connected by ohmic contact to said portable object, at least one energy storage means, and a display means, wherein an antenna of said portable object and the receiving means are capable of acting as the primary and secondary, respectively, of a transformer when said portable object receives energy and information from a reader of said portable object through electromagnetic coupling.
Specification