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Communication terminal, computer-readable storage medium, and communication method

a technology of communication terminal and computer, applied in the direction of transmission, near-field systems using receivers, instruments, etc., can solve the problems of power shortage and not considered a system which predicts power, and achieve the effect of increasing the reliability of data communication

Inactive Publication Date: 2013-07-11
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a communication device, computer program, and communication method that improve the reliability of data communication between devices using power supplied by electromagnetic induction.

Problems solved by technology

Additionally, for example, even when the remaining power on the tag side is determined to be sufficient, activation of a new application may cause a power shortage.
That is, the conventionally proposed technique has not considered a system which predicts power necessary for activation of an application to execute certain processing (e.g., data communication) and operates by receiving a corresponding amount of power.

Method used

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  • Communication terminal, computer-readable storage medium, and communication method
  • Communication terminal, computer-readable storage medium, and communication method
  • Communication terminal, computer-readable storage medium, and communication method

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0029]FIG. 1 is a view showing an example of the arrangement of a communication system including a communication terminal according to an embodiment of the present invention.

[0030]A communication control terminal 40 functions to control communication with a communication terminal 10. Each of the communication control terminal 40 and the communication terminal 10 has a plurality (two in the embodiment) of communication (e.g., NFC (Near Field Communication) standard) interfaces and performs data communication using these interfaces. If circumstances require, the communication control terminal 40 supplies power to the communication terminal 10. This power supply is done using, for example, a non-contact communication interface having a power supply function by electromagnetic induction.

[0031]FIG. 2 is a block diagram showing an example of the arrangement of the communication terminal 10 shown in FIG. 1.

[0032]The communication terminal 10 includes a control unit 11, storage unit 12, fir...

second embodiment

[0053]The second embodiment will be described next. In the second embodiment, externally supplied power is stored. A communication system and a communication terminal according to the second embodiment have the same arrangements as in FIGS. 1, 2, and 3 described in the first embodiment, and a description thereof will not be repeated. The arrangement of a power supply unit 16 of a communication terminal 10 is slightly different. Unlike the first embodiment, the power supply unit 16 of the second embodiment has a power storage function as a secondary battery.

[0054]The operation of the communication terminal 10 according to the second embodiment will be described. The operation of the communication terminal 10 according to the second embodiment is the same as in FIGS. 4 and 5 described in the first embodiment. Only a point different from the first embodiment will be explained here. The different point is the processing in step S208 of FIG. 5 described in the first embodiment.

[0055]An e...

third embodiment

[0058]The third embodiment will be described next. In the third embodiment, a charge (fee) for externally supplied power is paid. A communication system and a communication terminal according to the third embodiment have the same arrangements as in FIGS. 1, 2, and 3 described in the first embodiment, and a description thereof will not be repeated. The third embodiment is different in that a first communication unit 13 has an electronic settlement function. A power supply unit 16 may have a power storage function as a secondary battery, as in the second embodiment.

[0059]The operation of a communication terminal 10 according to the third embodiment will be described. The operation of the communication terminal 10 according to the third embodiment is the same as in FIGS. 4 and 5 described in the first embodiment. Only a point different from the first embodiment will be explained here. The different point is the power supply request sequence (S301 in FIG. 6).

[0060]An example of processi...

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PUM

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Abstract

A communication terminal includes a first communication unit having a power supply function by electromagnetic induction, and a second communication unit having a communication capability higher than that of the first communication unit. When communicating with a communication partner terminal, it is determined whether to receive power from the communication partner terminal. Upon determining to receive the power by the power supply function of the first communication unit, communication with the communication partner terminal by the second communication unit is controlled using the power supplied from the communication partner terminal by the power supply function of the first communication unit.

Description

TECHNICAL FIELD[0001]The present invention relates to a communication terminal, a computer-readable storage medium, and a communication method, which perform communication using electromagnetic induction.BACKGROUND ART[0002]A communication terminal which performs communication using a non-contact communication method is known. Japanese Patent Laid-Open No. 2005-323264 describes a technique of detecting the remaining power of a power supply unit on a storage (tag) side in an RFID system, if the remaining power is low, alerting the reader, and causing it to display an alert about the remaining power in the tag. In this case, for example, an induced electromotive force enables power level detection and result notification without consuming power in the tag.[0003]The technique described in Japanese Patent Laid-Open No. 2005-323264 cannot, for example, newly activate an application, although it can detect the remaining power on the tag side. Additionally, for example, even when the remai...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04B5/00H04B1/59H04B5/48
CPCG06K7/0008G06K7/10336G06K19/0701H04B5/0037G06K19/0723H02J5/005G06K19/0715H02J50/10H02J50/80H04B5/79
Inventor AOKI, NORIHITO
Owner CANON KK