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Communication device, communication method, program and communication system

A technology for communication equipment and communication parties, applied in the field of communication methods, programs and communication systems, and communication equipment, to achieve the effect of reducing power consumption

Inactive Publication Date: 2014-12-17
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the power consumption of the reader / writer and the initiator increases

Method used

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  • Communication device, communication method, program and communication system
  • Communication device, communication method, program and communication system
  • Communication device, communication method, program and communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] [Configuration example of a communication system to which the present invention is applied]

[0047] figure 1 A configuration example as an embodiment of a communication system to which the present invention is applied ("system" refers to a plurality of devices logically coupled regardless of whether each configured device is included in the same housing) is shown.

[0048] exist figure 1 , the communication system includes three NFC communication devices 1, 2 and 3. Each NFC communication device 1-3 can perform near field communication (NFC) with another NFC communication device by electromagnetic induction using a single-frequency carrier.

[0049] As the frequency of the carrier used by the NFC communication devices 1-3, for example, 13.56 MHz ISM (Industrial Scientific Medical) band can be applied.

[0050] Near field communication refers to communication that can be performed when the distance between devices performing communication is as close as within seve...

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PUM

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Abstract

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

Description

technical field [0001] The present invention relates to a communication device, a communication method, a program, and a communication system, and particularly to a communication device, a communication method, a program, and a communication system capable of reducing power consumption. Background technique [0002] A near-field wireless communication system that performs non-contact wireless communication in a near field by using an IC (Integrated Circuit) card is widely used. For example, applications as electronic tickets and electronic money are well known. Recently, cellular phones including electronic ticket and electronic money functions are becoming popular. [0003] In the near-field wireless communication system, there are proximity-type IC card systems as specified in ISO / IEC14443, proximity-type IC card systems as specified in ISO / IEC 15693, proximity-type IC card systems as specified in ISO / IEC NFC (Near Field Communication) stipulated in 18092, etc. ISO / IEC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04W4/80
CPCH04B5/02Y02B60/50H04B5/0031H04W8/22H04W4/80H04B5/0037Y02D30/70
Inventor 高山佳久
Owner SONY CORP