Communication device, reader/writer device, communication system, and communication method

摘要

There is provided a communication device including a secure communication unit configured to perform secure communication with an external reader/writer device, the secure communication being secure close-proximity communication, a first communication unit configured to perform high-speed communication with the reader/writer device, the high-speed communication being close-proximity communication that is faster than the secure communication, a second communication unit configured to, when communication via the high-speed communication is disconnected, communicate with the reader/writer device with a communication mode that is different from a communication mode of the high-speed communication, a power transmission unit configured to receive power transmitted from the reader-writer device by power transmission, and a secondary battery configured to store the power received by the power transmission unit. The second communication unit may be configured to, when communication via the high-speed communication is disconnected, operate with the power stored in the secondary battery.

主权项

1. A communication device comprising:
a close-proximity communication unit configured to perform a low-speed close-proximity communication with an external reader/writer device; a first communication unit configured to perform high-speed close-proximity communication with the reader/writer device, that is faster than the low-speed close-proximity communication; a second communication unit configured to, in response to a negotiation request from the reader/writer device when disconnection of communication via the high-speed close-proximity communication is detected at the reader/writer device, negotiate for medium-range communication and perform the medium-range communication with the reader/writer device; a power transmission unit configured to receive power transmitted from the reader/writer device by power transmission; and a secondary battery configured to store the power received by the power transmission unit, in which the second communication unit is configured to, when communication via the high-speed close-proximity communication is disconnected, operate with the power stored in the secondary battery, and in which the medium-range communication corresponds to a communication mode that is different from that of the high-speed close-proximity communication and from that of the low-speed close-proximity communication, such that the communication device is configured to perform three different types of communication.