External device for mobile communication terminal and NFC method using the same
First Claim
1. An external device for a mobile communication terminal, said external device comprising:
- a serial communication unit connectable to the mobile communication terminal through a connector;
an antenna;
a Near Field Communication (NFC) unit for communicating with the mobile communication terminal through the serial communication unit and communicating with an outside device via non-contact NFC through the antenna;
a smart card unit for communicating with the NFC unit;
a Universal Serial Bus (USB) communication unit, other than the serial communication unit; and
a protocol matching unit coupled between the NFC unit and the smart card unit;
whereinthe external device is configured to detect whether the external device is connected to one of(i) the mobile communication terminal through the connector of the serial communication unit, and(ii) to a USB host device via the USB communication unit;
the NFC unit is configured to, in response to a determination that the external device is connected to the mobile communication terminal,communicate with the mobile communication terminal via a serial communication protocol,communicate with the outside device by transmitting/receiving signals through the antenna via non-contact NFC, andcommunicate with the smart card unit, wherein the protocol matching unit is configured to perform protocol conversion between the NFC unit and the smart card unit; and
the external device is configured to, in response to a determination that the external device is connected to the USB host device, serve as a USB slave and communicate with the USB host device via a USB interface.
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Accused Products
Abstract
Disclosed herein are an external device for a mobile communication terminal, which enables non-contact NFC with the outside through a Near Field Communication (NFC) unit, and an NFC method using the external device. The external device for a mobile communication terminal includes a serial communication unit, an NFC unit, a smart card unit and an antenna. The serial communication unit is connected to a mobile communication terminal body through a connector. The NFC unit communicates with the mobile communication terminal body through the serial communication unit and communicates with the outside via non-contact NFC. The smart card unit communicates with the NFC unit. The antenna is configured such that the NFC unit transmits/receives signals via non-contact NFC through the antenna.
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Citations
12 Claims
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1. An external device for a mobile communication terminal, said external device comprising:
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a serial communication unit connectable to the mobile communication terminal through a connector; an antenna; a Near Field Communication (NFC) unit for communicating with the mobile communication terminal through the serial communication unit and communicating with an outside device via non-contact NFC through the antenna; a smart card unit for communicating with the NFC unit; a Universal Serial Bus (USB) communication unit, other than the serial communication unit; and a protocol matching unit coupled between the NFC unit and the smart card unit; wherein the external device is configured to detect whether the external device is connected to one of (i) the mobile communication terminal through the connector of the serial communication unit, and (ii) to a USB host device via the USB communication unit; the NFC unit is configured to, in response to a determination that the external device is connected to the mobile communication terminal, communicate with the mobile communication terminal via a serial communication protocol, communicate with the outside device by transmitting/receiving signals through the antenna via non-contact NFC, and communicate with the smart card unit, wherein the protocol matching unit is configured to perform protocol conversion between the NFC unit and the smart card unit; and the external device is configured to, in response to a determination that the external device is connected to the USB host device, serve as a USB slave and communicate with the USB host device via a USB interface. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A Near Field Communication (NFC) method, comprising:
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an external device for a mobile communication terminal detecting whether the external device is connected to one of (i) the mobile communication terminal through a connector of a serial communication unit of the external device and (ii) a Universal Serial Bus (USB) host device via a Universal Serial Bus (USB) communication unit, other than the serial communication unit, of the external device; if the external device is connected to the mobile communication terminal, an NFC unit within the external device communicating with the mobile communication terminal via a serial communication protocol; the NFC unit communicating with an outside by transmitting/receiving signals through an antenna within the external device via non-contact NFC; a smart card unit within the external device communicating with the NFC unit; and a protocol matching unit coupled between the NFC unit and the smart card unit within the external device performing protocol conversion between the NFC unit and the smart card unit; and if the external device is connected to the USB host device, the external device serving as a USB slave and communicating with the USB host device. - View Dependent Claims (9, 10, 11, 12)
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Specification