Apparatus and method for delivering power to a contactless...

Details Apparatus and method for delivering power to a contactless... Apparatus and method for delivering power to a contactless...

H - Electricity

01

F

H01F 27/42 (2006.01) G06K 7/00 (2006.01) G08C 19/04 (2006.01) G08C 19/06 (2006.01)

Patent

CA 2280800

The present invention ecompasses a terminal device and method of powering a portable device therefrom, by transmitting in two modes of operation. In particular, the terminal transmits to the portable data device, in a first mode of operation (201), a power signal at a first level and a data signal using a first modulation format and a first bit rate. The terminal further transmits, in a second mode of operation (205), a power signal at a second level and a data signal using a second modulation format and a second bit rate. The terminal is capable of determining a requirement to change modes of operation (203) and changes modes in response to changing power requirements of the portable data device.

L'invention concerne un système terminal et un procédé servant à alimenter un dispositif portable depuis ce système, par transmission en deux modes de fonctionnement. En particulier, ce terminal transmet au dispositif de données portable, dans un premier mode de fonctionnement (201), un signal de puissance à un premier niveau et un signal de données mettant en application un premier format de modulation et un premier débit binaire. Ce terminal transmet encore, dans un deuxième mode de fonctionnement (205), un signal de puissance à un deuxième niveau et un signal de données mettant en application un deuxième format de modulation et un deuxième débit binaire. Ce terminal est capable de déterminer une besoin de permutation des modes de fonctionnement (203) et modifie ces derniers en réaction à la variation des besoins en courant du dispositif de données portable.

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