• Smart Media Journal
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• v.2 no.3
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• pp.17-22
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• 2013

The growth of the propagated NFC provides the various services with respect to internet applications, which it can be predicted from the simple internet services to the privated services. This paper proposes the clustering of information retrieval system model using NFC tag of access information for utilizing the similar information of the tag. The proposed model can search the similar information of the tag using the access information of NFC tag. In addition, it can cluster the similar retrieval information into topic cluster for utilizaing users.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.71-72
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• 2012

NFC(Near Field Communication)는 13.56Mhz를 사용하는 근거리 무선통신으로 PC, 휴대폰 등의 전자 기기간 양방향 데이터를 송수신할 수 있는 기술이다 [1]. 안드로이드를 중심으로 채택되기 시작한 NFC 기술은 스마트폰과의 연결을 통하여 새로운 다양한 비즈니스 모델을 만들어 내고 있다. 본 논문에서는 이러한 NFC기술을 대형 마트 도메인에 적용하여 마트를 방문하는 고객이 편리하고 빠르게 장을 볼 수 있도록 도와주는 애플리케이션 개발내용에 대해 기술한다. 본 애플리케이션을 이용하여 고객은 장보기 전에 구입할 상품을 장바구니에 미리 등록할 수 있으며 예산금액을 설정할 수 있다. 고객이 마트를 방문 시 출입구에 부착되어있는 NFC 태그를 인식하여 장바구니에 등록한 상품에 관한 맞춤형 정보를 얻을 수 있고 마트 진열대의 상품에 장착된 NFC 태그를 스마트 폰으로 인식하여 장바구니에 등록된 상품과 체크하며 장보기를 실시한다. 장보기 완료 후에는 포스기에서 NFC 태그를 인식하고 결제방법을 선택하고 결제를 한다. 결제 후 상품은 포장단계에 적용되고 포장이 완료된 후 배송하게 된다. 대형마트에서는 본 시스템을 갖춤으로써 고객들이 좀 더 편리하게 쇼핑할 수 있도록 도와줄 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.119-122
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• 2013

본 논문에서는 물품관리의 효율성을 위해 모바일 RFID리더기와 스마트 모바일 기기를 이용한 스마트 선반 시스템을 제안한다. 이 시스템을 사용하여 관리자는 물품에 부착되어진 태그를 읽어서 실시간으로 물품의 상세정보를 열람할 수 있고, 선반에 부착되어진 태그를 읽어서 물품의 재고나 위치오류 상태를 파악할 수 있다. 이는 각 선반마다 RFID리더기를 부착시킨 형태의 기존의 스마트선반 시스템과 유사한 기능을 수행하면서도 구축비용과 물품 재질에 따른 인식 오류의 해결부담을 줄일 수 있는 효과가 있다.

• The Journal of the Korea Contents Association
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• v.9 no.6
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• pp.37-44
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• 2009

In this paper, we present a switched beamforming RFID reader and propose a convenient shopping system using it. The smart gate with the switched beamforming RFID reader(s) improves tag detection probability, tag false alarm probability, automatic detection functionality of shopping system compared to existing RFID based systems. The proposed system consists of a smart gate to read and verify the tags within cart, a check-out counter to approve customer purchase, and a central server to manage inventory & delivery and to analyze customer purchase trend. The proposed shopping system is more practical, convenient, and cost-effective to A/S than existing RFID shopping systems.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.16 no.2
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• pp.81-94
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• 2006

This study, in particular, aims to regulate the core techniques of ubiquitous computing, such as the use of an ad hoc network and the smart-tag technique, and to look more closely into RFID Tag's smart-tag-related security service. The study aims to do so because several important technical factors and structures must be taken into account for RFID Tag to be applied in the ubiquitous-computing-related infrastructure, and the security of the tag is considered one of the core technologies. To realize secure ubiquitous computing in the case of the Passive-tag-Performing RF communication, a less costly security service, the technical items needed to carry this out, a security service to be applied to passive tags, and network management techniques are required. Therefore, the passive-tag-based networks as the authentication level is established based on the secure authentication of each tag and the service that the tag delivers in the passive-tag-based networks and as the same service and authentication levels are applied, and the active-tag-based network system proposed herein is not merely a security service against illegal RFID tags by performing a current-location and service registration process after the secure authentication process of the active RFID tag, but is also a secure protocol for single and group services, is proposed in this study.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06c
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• pp.427-429
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• 2012

개인이 사용할 수 있는 스마트 기기가 다양해지면서 여러 기기로 생산된 사진 콘텐츠가 어떤 기준이나 규칙 없이 분산되어 있어 콘텐츠를 관리하고 원하는 콘텐츠를 검색하는 것이 어려워졌다. 따라서 본 논문에서는 개인 사진 콘텐츠를 효과적으로 분류하기 위하여 의미적 유사도를 기반으로 한 태그 클러스터링 기법을 제안한다. 태그들 사이의 유사도를 계산하여 서로 관련이 있다고 판단되는 태그들을 클러스터링 하는데, 태그가 같은 클러스터에 포함되어 있으면 그 태그를 가진 사진들도 유사성을 가진다고 볼 수 있으므로 개인 사진들을 의미에 따라 분류하는데 이용할 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.541-544
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• 2012

Recently, RFID-based mobile robot navigation technology for the study is on the march. Obstacle avoidance using existing RFID tag technology, the target is immediately recognizable through Stored in the tag for obstacle size and shape information. However, this technique is not easy to recognize a moving obstacle. In this paper, in order to this solve problem, mobile robot obstacle avoidance system is proposed using smart RFID tags attached to the ultrasonic sensor. Proposed system used Smart RFID tag is designed to the 900Mhz tags attached ultrasonic sensors. And captured moving obstacles information deliver mobile robot. Mobile robot modify driving information through delivery information. And the system keeps track of the best driving route. Usefulness of the proposed system was confirmed by simulations and experiments.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.29 no.2
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• pp.93-98
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• 2018

This paper introduces the development of HF(NFC) and UHF band(13.56 MHz, 920 MHz) tag antennas, imbedded in a box. In dual band antennas, the HF band tag can be used to inspect the box using NFC, and the UHF band tag can be used for logistics. The dielectric constant of the box material is measured and used for simulation. The Ntag213 chip manufactured by NXP is used in HF loop antennas, since NFC is possible with Ntag213. For the UHF band, the Higgs-3 chip manufactured by Alien is used. The HF tag antenna is located at the center of the UHF tag antenna, and the location of the HF tag antenna is calculated while considering coupling effects. The designed tag can be used by both the bands for the purposes of logistics and authentication.

• Journal of KIISE:Information Networking
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• v.36 no.4
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• pp.275-285
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• 2009

RFID technology using the smart tag technology as a part of the sensor network is currently in the spotlight. But there are still many problems in applying the technology in a ubiquitous environment, induding at the point when anybody can read the tag information and the authentication between the tag and the reader, and security problems in very low-cost smart tag implementation. The proposed scheme is designed to enhance security and efficiency related to various services required in RF networks, based on the reliable peripheral devices for users of passive RFID tag. Using passive RFID tag, which has been applied to authentication transactions in existing papers, this study also proposed an appropriate management scheme that is suitable for a dynamic environment and setting a temporary group to provide various services. also proposed scheme is support RFID grouping, temporary group of service and security servicce, improved efficiency of communication.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.12
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• pp.1367-1372
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• 2015

In this paper, we embed RFID tag into name plate of pole and store key value at its RFID tag in order to solve the problem for the management of name plate of pole, which identify by eyes of human for until now. The 900MHz RFID reader performs identification for stored key value, then its key value transmit into smart phone through Bluetooth. The smart phone transmit the key value into server through data communication network and receive again the necessary information after the authentication by the server. We develop pole information system that have such a structure.