Texas Instruments Corporation

Tally Mane

Ran Katz

Koby Levy

Rachel Stahl

A contactless system is described in which multiple execution environments may be coupled to a near field communication (NFC) controller, wherein each execution environment is configured to communicate with remote readers via the NFC controller using an assigned one of a plurality of communication protocols. During a polling session from a proximate reader, responding to a request command using a requested communication protocol and activating one of the plurality of execution environments assigned to the requested communication protocol to use the NFC controller. An arbitration is performed in response to each polling session such that a same combination of communication protocol and execution environment is not activated for adjacent polling sessions.

Multiple NFC card applications in multiple execution environments

A contactless system is described in which energy is scavenged from an electromagnetic field provided by a proximate reader device. An embedded processor and a volatile memory circuit within a near field communication (NFC) controller are operated using the scavenged energy. Parameter data from the proximate reader device may be acquired while conducting a near field communication transaction. A non-volatile memory (NVRAM) server is coupled to the NFC controller and also operates using the scavenged energy. Parameter data may be stored within the NVRAM server by sending a command and the parameter data from the NFC controller to the NVRAM server. At the completion of the transaction, the electromagnet field may be removed and all parameter data stored within the NFC controller will be lost. However, the next time the electromagnetic field is applied, the NFC controller may retrieve the parameters from the NVRAM server by sending a command.

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Petah Tikva, Israel

Tally Mane