Chip card with simultaneous contact and contact-less operations
AssigneeSamsung Electronics Co., Ltd.
InventorZang-Hee Cho
Life of this patent
Estimating the term…
Abstract
A chip card receives and processes what-ever combination of contact data and contact-less data is available to allow multiple functionalities for the chip card. A micro-computer of the chip card is adapted to simultaneously receive and process contact data from a contact interface and contact-less data from a contact-less interface. In addition, the chip card includes a power voltage selector for selecting a contact bias to supply power to the micro-computer when-ever the contact bias voltage is available since the contact bias voltage is more stable than a contact-less bias voltage.
Claims35
A semiconductor chip installed in a mobile device comprising:
- a contact interface for transmission of contact data between the semiconductor chip and another chip of the mobile device;
- and
- a contact-less interface for transmission of contactless data between the semiconductor chip and an external device,
- wherein the contact interface and contactless interface operate simultaneously such that contact data and contactless data are received simultaneously by a micro-computer for processing even while either a contact bias voltage provided from the contact interface or a contact-less bias voltage provided from the contact-less interface is decoupled from the micro-computer.
A semiconductor chip integrated in a mobile device comprising:
- a micro-computer;
- a contact interface for transmission of contact data between the semiconductor chip and the other chip of the mobile device;
- and
- a contact-less interface for transmission of contactless data between the semiconductor chip and an external device,
- wherein the contact interface and contactless interface operate simultaneously,
- wherein the micro-computer is adapted to transmit contact-less data with the external device through the contact-less interface while a contact bias voltage is being supplied from the contact interface,
- and wherein an available contact bias voltage is coupled to the micro-computer while a contact-less bias voltage is decoupled from the micro-computer even while the micro-computer receives and processes the contact-less data from the contact-less interface.
A mobile device comprising:
- a semiconductor chip including:
- a contact interface for transmission of contact data between the semiconductor chip and the other chip of the mobile device;
- and
- a contact-less interface for transmission of contactless data between the semiconductor chip and an external device,
- wherein the contact interface and contactless interface operate simultaneously such that contact data and contactless data are received simultaneously by a micro-computer for processing even while either a contact bias voltage provided from the contact interface or a contact-less bias voltage provided from the contact-less interface is decoupled from the micro-computer.
A method for processing data on a semiconductor chip card, comprising:
- deriving a contact-less bias voltage from a signal on at least one antenna of the semiconductor chip card;
- generating an alternative bias voltage that is more stable than the contact-less bias voltage;
- and
- selecting the alternative bias voltage to be supplied to a micro-computer of the semiconductor chip card while decoupling the contact-less bias voltage from the micro-computer when both the alternative bias voltage and the contact-less bias voltage are available.
Dependencies are inferred from the claim text.