COMMUNICATION DEVICE, COMMUNICATION METHOD, PROGRAM AND COMMUNICATION SYSTEM

摘要

A communication device includes: an electromagnetic-wave generating unit for outputting an electromagnetic wave; and a transmitting/receiving unit for transmitting data by modulating the electromagnetic wave in accordance with data and receiving data transmitted from the other device by demodulating the electromagnetic wave outputted by the electromagnetic-wave generating unit or the electromagnetic wave outputted by the other device as the other party of communication, wherein the transmitting/receiving unit transmits attribute information indicating communication ability of the device and receives attribute information indicating communication ability of the other device, and the electromagnetic-wave generating unit reduces power of the electromagnetic wave to be outputted after receiving the attribute information.

主权项

1. A communication device comprising:
an electromagnetic field generating unit for outputting an electromagnetic wave; a transmitting/receiving unit for transmitting signal by modulating carrier wave in accordance with data and receiving signal transmitted from the other device by demodulating the carrier wave outputted by the electromagnetic field generating unit or the electromagnetic field generated by the other device as the other party of communication; and a control unit for controlling output of the electromagnetic wave in a first mode and a second mode which power consumption of electromagnetic wave is reduced than the first mode, wherein the control unit controls to select one of the first mode and the second mode based on signal received by the transmitting/receiving unit from the other device.