Process for establishing a data link between two processors, specifically within an NFC chipset
AssigneeInside Secure
InventorBruno Charrat
Life of this patent
Estimating the term…
Abstract
A process for establishing a data link between a first processor configured to supply, upon a contact communication port, a first data carrying signal, and a second processor configured to supply, upon a contact communication port, a second data carrying signal is described. The process includes providing a first coupler and a second coupler, establishing a contactless coupling between the first and second couplers and, by the intermediary of the couplers and at least one RF signal, transferring the first data carrying signal to the second processor and transferring the second data carrying signal to the first processor. The second processor is, for example, a secure processor of a SIM card and the first processor is an NFC controller.
Claims28
A process for establishing a data link between a first processor and a second processor, comprising:
- by intermediary of a contact communication port of the first processor, emitting a first data carrying signal in the form of a first modulated signal;
- by intermediary of a contact communication port of the second processor, emitting a second data carrying signal in the form of a second modulated signal;
- providing a first coupler and connecting the first coupler to the contact communication port of the first processor;
- providing a second coupler and connecting the second coupler to the contact communication port of the second processor;
- establishing a contactless coupling between the first and second couplers;
- and
- by way of the couplers and of at least one RF signal, transferring the first data carrying signal to the contact communication port of the second processor and transferring the second data carrying signal to the contact communication port of the first processor.
A data processing and transfer device having a first processor configured to supply, upon a contact communication port, a first data carrying signal in the form of a first modulated signal, and a second processor configured to supply, upon a contact communication port, a second data carrying signal in the form of a second modulated signal, the device comprising:
- a first coupler connected to the contact communication port of the first processor;
- a second coupler connected to the contact communication port of the second processor,
- wherein the couplers are coupled by a contactless coupling, and the first coupler is configured to:
- receive or sense the first modulated signal, extract from the first modulated signal the first data carrying signal and transfer the first data carrying signal to the second coupler by way of an RF signal,
- the second coupler is configured to:
- receive or sense the second modulated signal, extract from the second modulated signal the second data carrying signal and transfer the second data carrying signal to the first coupler by way of the RF signal or of another RF signal, receive the first data carrying signal, and supply to the contact communication port of the second processor a third modulated signal that emulates the first modulated signal, and
- the first coupler is also configured to:
- receive the second data carrying signal and supply to the contact communication port of the first processor a fourth modulated signal that emulates the second modulated signal.
A data processing and transfer device having a first processor configured to supply, upon a contact communication port, a first data carrying signal in the form of a first modulated signal, and a second processor configured to supply, upon a contact communication port, a second data carrying signal in the form of a second modulated signal, the device comprising:
- a first coupler connected to the contact communication port of the first processor;
- a second coupler connected to the contact communication port of the second processor,
- wherein the couplers are coupled by a contactless coupling, and the first coupler is configured to:
- receive or sense the first modulated signal, extract from the first modulated signal the first data carrying signal and transfer the first data carrying signal to the second coupler by way of an RF signal,
- the second coupler is configured to:
- receive or sense the second modulated signal, extract from the second modulated signal the second data carrying signal and transfer the second data carrying signal to the first coupler by way of the RF signal or of another RF signal, receive the first data carrying signal, and supply to the contact communication port of the second processor a third modulated signal that emulates the first modulated signal, and
- the first coupler is also configured to:
- receive the second data carrying signal and supply to the contact communication port of the first processor a fourth modulated signal that emulates the second modulated signal, and
- wherein:
- the first processor is an NFC controller also comprising a contactless interface circuit functioning by inductive coupling, and
- the second processor is a baseband processor for a cellular telephone network.
A data processing and transfer device having a first processor configured to supply, upon a contact communication port, a first data carrying signal in the form of a first modulated signal, and a second processor configured to supply, upon a contact communication port, a second data carrying signal in the form of a second modulated signal, the device comprising:
- a first coupler connected to the contact communication port of the first processor;
- a second coupler connected to the contact communication port of the second processor,
- wherein the couplers are coupled by a contactless coupling, and the first coupler is configured to:
- receive or sense the first modulated signal, extract from the first modulated signal the first data carrying signal and transfer the first data carrying signal to the second coupler by way of an RF signal,
- the second coupler is configured to:
- receive or sense the second modulated signal, extract from the second modulated signal the second data carrying signal and transfer the second data carrying signal to the first coupler by way of the RF signal or of another RF signal, receive the first data carrying signal, and supply to the contact communication port of the second processor a third modulated signal that emulates the first modulated signal, and
- the first coupler is also configured to:
- receive the second data carrying signal and supply to the contact communication port of the first processor a fourth modulated signal that emulates the second modulated signal, and
- wherein:
- the first processor is a baseband processor for a cellular telephone network, and
- the second processor is a secure processor of a SIM card.
A data processing and transfer device having a processor configured to supply, on at least one contact communication port, a first data carrying signal in the form of a first modulated signal, the device comprising:
- at least one coupler connected to the contact communication port of the processor, the at least one coupler being configured for contactless coupling with another coupler, and configured to:
- receive or sense the first modulated signal, extract from it the first data carrying signal and transfer the first data carrying signal to the other coupler, by way of an RF signal,
- receive, by way of the other coupler, a second data carrying signal, by way of the RF signal or of another RF signal, and supply to the contact communication port of the processor a second modulated signal.
Dependencies are inferred from the claim text.