Dual mode smart card and smart card controller
View Patent ↗A dual mode smart card controller, a dual mode smart card, and a wireless communication device incorporating one or more of the same are provided. The dual mode smart card controller includes a first controller adapted for supporting communications with a first smart card protocol, and a second controller adapted for supporting communications with a second smart card protocol. The dual mode smart card controller further includes a multiplexer module having two sets of multiplexed ports that are selectively coupled to a common set of ports, and an interface module coupled to the common set of ports, and adapted to be coupled to signal terminals of a smart card. The multiplexer module selectively couples one or more signals received from the smart card via the signal terminals to one of the first controller and the second controller. The smart card uses at least one of a same connection associated with the common set of ports for use with both of the first controller and the second controller.
1. A dual mode smart card controller comprising:
a first controller adapted for supporting communications with a first smart card protocol;
a second controller adapted for supporting communications with a second smart card protocol, which is different than the first smart card protocol;
a multiplexer module having two sets of multiplexed ports that are selectively coupled to a common set of ports, and
an interface module coupled to the common set of ports, and adapted to be coupled to signal terminals of a smart card;
wherein the multiplexer module selectively couples one or more signals received from the smart card via the signal terminals to one of the first controller and the second controller; and
wherein the smart card uses at least one of a same connection associated with the common set of ports for use with different signals of both of the first controller and the second controller.
2. A dual mode smart card controller in accordance with claim 1 , wherein the multiplexer module includes a selection input coupled to one of the signal terminals, corresponding to a data signal of the signal terminals of the smart card in association with at least one of the first smart card protocol and the second smart card protocol.
3. A dual mode smart card controller in accordance with claim 2 , wherein the data signal of the signal terminals is coupled to one of a pull-up resistor or a pull-down resistor.
4. A dual mode smart card controller in accordance with claim 1 , wherein the interface module includes a voltage level shifting module.
5. A dual mode smart card controller in accordance with claim 1 , wherein the first controller includes an ISO7816 controller for interacting with a SIM smart card.
6. A dual mode smart card controller in accordance with claim 1 , wherein the second controller includes a USB controller for interacting with a USB smart card.
7. A dual mode smart card controller in accordance with claim 1 , wherein the dual mode smart card controller is incorporated as part of a baseband integrated circuit.
8. A dual mode smart card controller in accordance with claim 7 , wherein the same connection associated with the common set of ports for both the first controller and the second controller is at an interface of the broadband integrated circuit.
9. A dual mode smart card controller in accordance with claim 1 , wherein the dual mode smart card controller is incorporated as part of a wireless communication device.
10. A dual mode smart card in accordance with claim 9 , wherein common set of ports includes at least one connection, which is used to provide a reset for a first one of the two sets of demultiplexed ports using the first smart card protocol, which is coupled to a select signal of the demultiplexer for controlling which one of the two sets of demultiplexed ports is currently coupled to the common set of ports.
11. A dual mode smart card in accordance with claim 9 , wherein the first smart card protocol includes an ISO7816 protocol.
12. A dual mode smart card in accordance with claim 9 , wherein the second smart card protocol includes a USB protocol.
13. A dual mode smart card comprising:
a plurality of signal terminals;
a demultiplexer having a common set of ports including a plurality of ports respectively coupled to the plurality of signal terminals, and two sets of demultiplexed ports that are selectively coupled to the common set of ports; and
a controller respectively coupled to each of the two sets of demultiplexed ports and for respectively interacting with each of the two sets of demultiplexed ports using a first smart card protocol and a second smart card protocol, which is different than the first smart card protocol; and
wherein the smart card uses at least one of a same connection associated with the common set of ports for interacting with different signals of both of the two sets of demultiplexed ports using the first smart card protocol and the second smart card protocol.
14. A dual mode smart card in accordance with claim 13 , wherein the at least one connection, which is used to provide a reset for the first one of the two sets of demultiplexed ports using the first smart card protocol, is not used by a second one of the two sets of demultiplexed ports using the second smart card protocol.
15. A wireless communication device comprising:
an antenna;
a wireless communication module including at least one of a wireless receiver, a wireless transmitter, or a wireless transceiver; and
a dual mode smart card controller including:
a first controller adapted for supporting communications with a first smart card protocol;
a second controller adapted for supporting communications with a second smart card protocol, which is different than the first smart card protocol;
a multiplexer module having two sets of multiplexed ports that are selectively coupled to a common set of ports, and
an interface module coupled to the common set of ports, and adapted to be coupled to signal terminals of a smart card;
wherein the multiplexer module selectively couples one or more signals received from the smart card via the signal terminals to one of the first controller and the second controller; and
wherein the smart card uses at least one of a same connection associated with the common set of ports for use with different signals of both of the first controller and the second controller.
16. A wireless communication device in accordance with claim 15 , wherein the multiplexer module includes a selection input coupled to one of the signal terminals, corresponding to a data signal of the signal terminals of the smart card in association with at least one of the first smart card protocol and the second smart card protocol.
17. A wireless communication device in accordance with claim 15 further comprising a smart card.
18. A wireless communication device in accordance with claim 17 wherein the smart card includes:
a plurality of signal terminals;
a demultiplexer having a common set of ports including a plurality of ports respectively coupled to the plurality of signal terminals, and two sets of demultiplexed ports that are selectively coupled to the common set of ports; and
a controller respectively coupled to each of the two sets of demultiplexed ports and for respectively interacting with each of the two sets of demultiplexed ports using a first smart card protocol and a second smart card protocol; and
wherein the smart card uses at least one of a same connection associated with the common set of ports for interacting with both of the two sets of demultiplexed ports using the first smart card protocol and the second smart card protocol.
19. A wireless communication device in accordance with claim 15 , wherein the first controller includes an ISO7816 controller for interacting with the smart card.
20. A wireless communication device in accordance with claim 15 , wherein the second controller includes a USB controller for interacting with the smart card.