Method for booting portable objects with multiple communication interfaces
AssigneeGemalto SA
InventorsMichel Thill, Laurent Castillo
Life of this patent
Estimating the term…
Abstract
A boot sequence method comprises a determination step 110 and 200, a first starting step 120, 210 or 240 for starting a first interface, a first negotiation step 140 or 220 wherein a power negotiation is performed, a second negotiation step 140 or 230 for determining the interfaces to activate simultaneously, and a second starting step 150 or 230 wherein the interfaces that can be activated simultaneously are started one after each other.
Claims14
A boot sequence method for a portable object having a plurality of pins of the portable object intended to be connected to a corresponding plurality of pins of a reader, the portable object having at least two communication interfaces connected to the plurality of pins of the portable object, and the reader having at least one communication interface connected to the plurality of pins of the reader, wherein the at least one communication interface of the reader is comprised in a list of communication interfaces comprising more communication interfaces than supported by the portable object, the method comprising:
- a determination step wherein a selected communication interface of the at least two communication interfaces of the portable object is determined for initiating a communication with the reader,
- a first starting step wherein the selected communication interface is started for communicating with the reader,
- a first negotiation step wherein a power negotiation is performed between the portable object and the reader for determining a compatible power range,
- a second negotiation step wherein a negotiation is performed between the portable object and the reader for determining a first communication interface of the at least one communication interface of the reader and a second communication interface of the at least two communication interfaces of the portable object to activate simultaneously, and
- a second starting step wherein the first communication interface and the second communication interface are started one after each other.
A portable object comprising:
- a processor;
- and
- at least two communication interfaces,
- wherein the portable object, using the processor, is configured to:
- determine a selected communication interface of the at least two communication interfaces for initiating a communication with a reader;
- start the selected communication interface for communicating with the reader;
- perform a power negotiation with the reader for determining a compatible power range;
- perform a communication interface negotiation with the reader for determining a reader communication interface for the reader and a portable object communication interface for the portable object to activate simultaneously;
- and
- start portable object communication interface;
- wherein the reader communication interface and the portable object interface are started one after each other.
Dependencies are inferred from the claim text.