• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.418-420
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• 2003

본 논문에서는 감각형 인터페이스를 이용하여 미디어 메일 컨텐츠를 재생 또는 제어할 수 있는 메일 리더(TMR : Tangible Mail Reader)를 제안한다. TMR은 마우스나 키보드 등의 입력 장치를 사용하는 기존의 인터페이스를 사용하는 대신 RFID 태그를 내장한 새로운 형태의 오브젝트를 이용하여 컴퓨터 사용이 익숙하지 않은 유아 및 고령자 등이 손쉽게 메일 컨텐츠를 재생시키거나 제어할 수 있는 인터페이스를 제공한다. 또한 ubi-UCAM을 사용하여 홈 환경 내의 사용자의 의도에 따른 적절한 서비스를 제공하는 응용서비스를 구현한다. 따라서 제안된 TMR은 유아용 장난감, 멀티미디어 교육 프로그램, 고령자를 위한 컴퓨터 제어기 등 다양한 분야에서 응용될 수 있다.

• Journal of Advanced Navigation Technology
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• v.12 no.6
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• pp.583-590
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• 2008

U-AD using Mobile RFID is service of new concept. It will be able to provide a service to the user by reading Tag information which is attach in the CDs, the books and medical supply etc. with cellular phone equipped with RFID device which is available for reading RFID tags. Applies like this service and when reacting Tag with RFID Readers of the cellular phone, the advertisement contents which is not the possibility of seeing fragmentarily in the outside develops the service which is the possibility with the cellular phone of seeing at real-time with aim. U-AD using Mobile RAD detail shows product information by cell phone, user exactly knows desire product and looks forward purchasing efficiently. Also advertiser benefit from U-AD using Mobile RFID since advertises effects of product sufficiently are increased. And then it expands demand on product.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06d
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• pp.100-104
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• 2007

라디오 주파수를 이용하여 사물의 정보를 인식할 수 있는 RFID 기술은 다양한 분야에 활용되고 있는데 이러한 RFID 망을 All-IP 기반의 이동통신망과 연동할 경우 RFID의 각종정보와 휴대단말기의 위치정보 및 이동성, 그리고 다양한 IP 기반의 정보서버를 활용한 새로운 형태의 위치기반 서비스의 창출이 가능하다. 즉, RFID 태그에 태그 리더기 역할을 하는 단말기의 위치를 부여하고 이를 RFID 서버에서 지속적으로 관리함으로써 RFID 태그의 Code와 위치를 기반으로 한 위치기반서비스를 제공할 수 있다. 본 연구에서는 RFID망과 이동통신망의 연동을 기반으로 한 위치기반서비스 모델로 Mobile Information Retrieval Service (MIRS), Mobile Location Tracking Service (MLTS), Localization Service by Fixed Tag (LSFT) 세 가지 모델을 제시하였으며 이러한 서비스 모델은 실제 서비스를 개발하는데 있어 다양한 방식으로 활용될 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.83-86
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• 2012

RFID는 국가 신성장 동력 분야로서 미래 성장성이 매우 클 것으로 예상되며, 이미 물류관리 등 다양한 분야에 활용되고 있다. 그러나 RFID리더의 인식률은 95%~98%대에 머무르고 있어, 오 인식된 2%~5%의 처리를 위하여 많은 시간과 자본이 투입되어야 하는 실정이다. 이에 본 연구에서는 하드웨어의 인식률의 한계를 극복하고 보다 정교한 인식시스템을 구축할 수 있도록 화상인식을 통해 사물의 개수를 파악하는 기술을 RFID기술에 접목한 융합 시스템을 제안하고자 한다. 구체적으로는 RFID 리더기를 통해 물품의 개수를 파악하고, 이와 더불어 화상인식 기술을 이용하여 사물의 개수를 파악한다. 이때 두 개의 서로 다른 방법으로 인식한 사물의 개수를 비교하여, 동일하면 그 인식 결과를 신뢰하고, 그렇지 않은 경우 RFID전파의 출력세기 및 카메라 촬영각도 등을 보정하여 RFID 인식률을 향상시키는 것이다. 본 논문에서는 현재 개발이 진행 중인 이 시스템의 구성, 상호연동 알고리즘 및 구현방법에 대해 설명하고자 한다.

• Aerospace Engineering and Technology
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• v.7 no.1
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• pp.236-244
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• 2008

The evolution and application of RFID technologies have been at the forefront of allowing aviation industries to improve the quality of aircraft maintenance and air cargo handling. However, safety problems in airplane operation are arising from the hazards of frequencies transmitted due to RFID systems. Though the intensities of frequencies back-scattered from the tags are very weak, some malfunctions are anticipated due to induction coupling on aircraft wiring. Therefore, safety assessment such as electromagnetic compatability should be accomplished upon aircraft critical and essential equipments before installations.

• The Journal of the Korea Contents Association
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• v.8 no.12
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• pp.37-44
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• 2008

Data entered into RFID tags are used for saving costs and enhancing competitiveness in the development of applications in various industrial areas. RFID readers perform the identification and search of hundreds of objects, which are tags. RFID technology that identifies objects on request of dynamic linking and tracking is composed of application components supporting information infrastructure. Despite their many advantages, existing applications, which do not consider elements related to real.time data communication among remote RFID devices, cannot support connections among heterogeneous devices effectively. As different network devices are installed in applications separately and go through different query analysis processes, there happen the delays of monitoring or errors in data conversion. The present study implements a RFID database handling system in semantic Web environment for integrated management of information extracted from RFID tags regardless of application. Users’ RFID tags are identified by a RFID reader mounted on an application, and the data are sent to the RFID database processing system, and then the process converts the information into a semantic Web language. Data transmitted on the standardized semantic Web base are translated by a smart browser and displayed on the screen. The use of a semantic Web language enables reasoning on meaningful relations and this, in turn, makes it easy to expand the functions by adding modules.

• Proceedings of the KIEE Conference
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• 2003.07e
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• pp.117-119
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• 2003

Recently, Radio Frequency Identification (RFID) cards have been charming increasing attention. In addition, the RFID card ensures high durability and ease of maintenance because it has no built-in contact. And the benefits of RFID cards over contact cards are primarily due to the increased transaction speed and convenience brought to the cardholder. In this paper, we have developed a RFID card reader for the multi-purpose applications. The vicinity card reader with large-screen to display user ID and card number for a kinds of applications such as entrance and attendance management system is suitable for the use with EM card and TEMIC card, featuring easy to mount and reliable quality. The read range of the proposed RFID card reader is 70cm. This paper also addresses current RFID technology in terms of systems and provides a look forward its future applications in the aviation environment using RFID smart card.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.3
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• pp.747-754
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• 2013

This paper proposed a new transponder detection method to reduce tag recognition time and simplify anti-collision process in RFID systems. In conventional systems, a transponder in detectable area is passively recognized by responding to a reader command. In addition, if there are multiple tags in the area, a collision between tags occurs by responding at the same time to a command and anti-collision process begins. In the proposed method, tags are actively recognized without any command from a reader which results to reducing a tag recognition time and simplifying anti-collision process. To compare transponder recognition time, the process of transponder recognition in conventional systems is analysed. A circuit to detect transponder directly is developed and antenna voltage variation of a reader in the appearance of multiple transponders is analysed for the implementation of the proposed method.

• Journal of the Korea Society of Computer and Information
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• v.19 no.5
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• pp.71-78
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• 2014

The RFID-tag objects can be recognized by a distinct reader where it is installed. The RFID-tag objects are likely described as storages rather than the mobiles in the use of GPS. As RFID tags are large in number compared to moving objects, so the storing and retrieval costs are highly expensive. Here, two solutions for spatio-temporal model taking account of the feature in the tagged objects are proposed. First, the moving-tag objects are expressed by the terms "now" as well as "path location". Second, the size of storing index was noticeably reduced by not saving the tag information of palletizing products but mapping the tagged objects.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.8
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• pp.1759-1764
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• 2015

In this paper, we considered a design method of a circular polarization (CP) antenna for UHF (ultra high frequency) RFID (Radio Frequency IDentification) readers. The antenna is a dual-fed circular microstrip patch which produces right-handed CP. Quadrature hybrid coupler is used for dual feeding. The outputs of the coupler and circular patch are connected through copper wires, and the inductive reactance produced by the connecting wires is compensated by a ring-shaped slot inserted inside the circular patch. The effects of the geometrical parameters of the proposed antenna on the antenna performance are examined, and the parameters are adjusted to be suitable for the operation in North American UHF RFID band (902-928 MHz), which includes domestic UHF RFID band. The antenna is fabricated, and the experiment results reveal a frequency band of 854-993 MHz for a voltage standing wave ratio < 2. The fabricated antenna is connected to a commercial RFID reader, and it showed a good performance of tag identification.