Information communication system, noncontactic IC card and IC chip

An information communication, non-contact technology, applied in the field of information communication systems, can solve problems such as major problems caused by practical use and incomplete processing.

Inactive Publication Date: 2003-04-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the processing time increases, it may not be processed within the specified time, which will cause major problems in practice

Method used

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  • Information communication system, noncontactic IC card and IC chip
  • Information communication system, noncontactic IC card and IC chip
  • Information communication system, noncontactic IC card and IC chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Below with regard to embodiment mode of the present invention refer to Figure 6 Be explained.

[0024] figure 2 It is a functional block diagram showing a schematic configuration of a master station (reader / writer) 101 and a slave station (non-contact IC card) 201 in the information communication system of the present invention.

[0025] The master station 101 includes a control unit 102, a modulation unit 103, a demodulation unit 104, a memory

[0026] and antenna 106 . The slave station 201 includes a control unit 202 , a modulation unit 203 , a demodulation unit 204 , a nonvolatile memory 205 , a timer 206 , a time number generation unit 207 , a data transmission detection unit 208 , and an antenna 209 .

[0027] The transmission and reception of information between the master station 101 and the slave station 201 is performed by an electromagnetic induction method or the like using the antennas 106 and 209 , respectively. The request signal sent from the maste...

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PUM

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Abstract

An information communication system which includes a master station and a plurality of slave stations and enables reduction of the processing time of the whole system. When the slave stations transmit response signals to the master station respectively, not only time slot numbers but also time delay numbers are generated. If a slave station detects that a second slave station transmits the response signal at a timing corresponding to the preceding time delay number in the same time slot, the former slave station is controlled not to transmit the response signal.

Description

technical field [0001] The present invention relates to an information communication system for communicating between a master station and a plurality of slave stations, a non-contact IC card and an IC chip used as slave stations of the information communication system. Background technique [0002] In recent years, information communication systems have been developed that use IC cards as slaves and reader / writers as masters to communicate information in a non-contact state, and their practical application is being considered in various fields such as station ticket gates and logistics. For example, when this information communication system is applied to the ticket gate of a station, the IC card is used as a monthly pass, etc., and the reader and reader at the automatic ticket gate are used to pass information to carry out door switch control, etc., so that the user does not need to use the card box It is very practical to take out commuter passes, etc., and it is expected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B5/02G06K7/00G06K19/07H04B1/59H04B7/26H04J3/00H04M1/725
CPCG06K7/0008G06K19/0723G06K7/10059
Inventor 大屋光功德光伸一
Owner PANASONIC CORP
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