• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.565-568
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• 2005

RFID system allows contactless identification of objects, where small tags are attached to objects and information of objects are transferred using radio frequency. In recent years, industries have incorporated several identification systems to its production processes, which allow collecting automatically information about goods. In order to communicate with a single tag out of a group of tags, the target tag has to be identified. Therefore the read has to attempt to obtain the unique identification code of each tag within its read range. This paper presents performance results of QT and QT-sl protocols, which are tag identification protocols incorporating memoryless property. The memoryless property is that the current response of each tag only depends on the current query of the reader but not on the past history of the reader's queries.

• Electronics and Telecommunications Trends
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• v.29 no.4
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• pp.91-100
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• 2014

사람의 말소리를 문자로 변환하여 기기의 제어명령으로 활용하는 것이 음성인식 기술이다. 음성인식에 대한 기술개발 요구는 수십 년 전부터 있어 왔고, 꾸준히 제품화되고 있는 분야라 하겠다. 제품으로의 상용화가 가능한 알고리즘 및 데이터 처리체계는 HMM(Hidden Markov Model)이라는 수학적 모델링으로 정형화되어 있으며, 대규모의 반복적 데이터 수집과 정교한 학습 데이터베이스의 구축이 음성인식기술의 핵심요소라는 것이 일반적인 시각이다. 이러한 이유로 인해, 대용량 음성인식 데이터베이스의 수집, 가공 등이 가능한 인프라를 갖춘 기관 및 업체들이 음성인식기술 시장을 점유할 수 있는 것이다. 그러나, 이러한 음성인식의 서비스 제공 체계는 사물인터넷 또는 웨어러블 디바이스 등으로 음성인식 사용자 인터페이스가 확대되고 통신 및 네트워크가 연결이 불가한 경우 그 한계를 보일 수 있다. 본고에서는 이러한 문제를 해결하기 위한 내장형 음성인식기의 하드웨어가속기 기술개발에 대한 내용과 국내외 현황을 살펴보기로 한다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.20 no.5
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• pp.450-459
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• 2009

RFID technologies, which allow collecting, storing, processing, and tracking information by wirelessly recognizing the inherent ID of object through an attached electronic tag, have a variety of application areas. One of the important parameters in designing such RFID systems is the read range within which the system recognizes the electronic tag. We present a novel method of designing an RFID tag required for long read range of RFID systems. The tag designed by the proposed method is battery-assisted to increase its forward-link read range and simultaneously, has backscattering modulation amplified to increase its reverse-link read range. We experimentally confirm that the minimum threshold power of the tag is - 23 dBm and the backscattering modulation gain is 28 dB, which is consistent with our simulation results. We also verify that the tag in this paper improves more than 2 times in terms of the read range compared to the existing commercial tags.

• Journal of the Korea Convergence Society
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• v.7 no.4
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• pp.19-24
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• 2016

To share the informations, we have been used Internet by the unique information transfer method. Many devices are showed and have been used in our various fields because of ICT(Information communication technology) development. The various devices are connected by Internet to send or receive the informations. We call this situation to The Internet of Things(IoT). It use the Internet for the interconnection of the various things. Studies on IoT progress extensively on today. Therefore, we studied a healthcare field related with Internet of things. In this paper, we described many actual cases such as smart bottle of medicine and smart pill in healthcare domains based on IoT.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.850-852
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• 2014

Recently, the development of Machine to Machine (M2M) communication has been largely accomplished in a variety of fields including smart home. In M2M communication, the role of sensor node is only limited to gather data and send them to upper application layers. In this research, the limited role of the sensor node in traditional M2M communication is improved in order for the devices to make inference, which makes it possible to provide basic context-aware services within sensor node level. Therefore, implementation of rule-based inference system on microcontroller for smart home is proposed.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.5
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• pp.151-155
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• 2017

With the rapid growth of the up-to-date wireless network and Internet technologies, huge and various types of things around us are connected to the Internet and build the hyper-connected society, and lots of smart applications using these technologies are actively developed recently. IoT connects human, things, space, and data with various types of networks to construct the hyper-connected network that can create, collect, share and appling realtime information. Furthermore, most of the smart applications are concentrated on the service that can collect and store realtime contexts using various sensors and cloud technology, and provide intelligence by making inferences and decisions from them nowadays. In this paper, we design a smart application that can accurately control and process the current state of the specific context in realtime by using the state-of-the-art ICT techniques such as various sensors and cloud technologies on the IoT based mobile computing environment.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.187-198
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• 2021

This study aims to understand the current status of the use of IoT-based products and services from the perspective of consumers and analyze the role and consumption value of each service-generated from the products and services. Their features and generated consumption value have been identified The decision-making process was divided into based on three stages (pre-purchase, purchase, and post-purchase) stages, and IoT services were classified in stages. In the pre-purchase stage, the IoT service provides information and alternatives, and is used for interaction and automatic payment systems in the purchasing stage. In the post-purchase stage, repetitive purchases are encouraged and after-sale services are provided. Throughout the decision-making process, smart retai application and servicel provides epistemic and functional value. In addition, it provides conditional and social value in the pre-purchase stage, and conditional value in the post-purchase stage. This study aims to provideprovides marketers and retailers an insight advice for the enhanced satisfaction of consumersimproving the satisfaction of consumers and the development of smart retail by examining the consumer-centered consumption value.

• Electronics and Telecommunications Trends
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• v.19 no.3 s.87
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• pp.32-40
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• 2004

상황정보(context information)는 사용자의 요구와 주변 상황이 수시로 변화하는 이동통신 환경에서 더욱 중요하게 활용된다. 따라서, 차세대 이동통신 시스템의 서비스는 음성, 텍스트, 멀티미디어 서비스의 고도화에 이어 일상 곳곳에 편재된 센서 및 컴퓨터들이 수집한 각종 환경정보를 효과적으로 상호 공유하여 사용자 및 주변 환경의 상황(context)을 알아내고 그에 맞는 다양한 정보에 근거하여 자발적으로 서비스를 제공하는 상황인식(context-aware) 특징을 가지게 될 것이다. 이러한 상황인식 서비스를 가능하게 하기 위해서는 사용자 및 사물 등의 객체를 인식하고, 이들의 현 상태에 따른 상황정보를 수집하여 서비스에 적응하는 기술 등이 필수적이다. 본 논문에서는 IMT-2000 이후의 차세대 이동통신 시스템의 진화방향을 상황인식 서비스 제공 관점에서 살펴보고, 상황인식 서비스를 위한 관련 기술과 차세대 이동통신 환경에서 상황인식 서비스가 어떻게 제공될 수 있을지를 살펴본다.

• The Journal of Korean Philosophical History
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• no.41
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• pp.247-270
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• 2014

Multiculturalism may be deeply connected with the diversities of cultures and enlightenment discussed in the context that we live together with the specification of cultures derived from any spatial conditions overtly and covertly. People live on their own customs compatible with their space and the time, and they make their boundaries of races, nations, and national memories. In such a way each of them treats each other exclusively and is inclined not to recognize being of the others. Also people are apt to recognize the others unessentially and overlook the others's value and way of life. As a result they might destroy the foundation of symbiotic livings conditions on their own. On the other hand they pretend to search for the cultural diversities of the others and include them under their own universalities, resulting in conflicts. Hence it is required that we should make an efforts to prepare the fields for living together through getting over the problem of the recognition of matters and affairs before us. From the above-told critical mind this thesis seeks the multicultural relativities and more arrives at the relationalities discussed by East-Asiatic philosophers of Chuang Tzu and Ch'oe Han-gi. Especially by gazing at the idea of the interconnectedness which means activities, changeabilities and mobilities, appeared on the idea of Ch'oe Han-Gi's revolving transformation, it is stressed that the communications of the local with each other in the various aspects of, e.g. materials, regions and cultures should be achieved.

• Journal of Cadastre & Land InformatiX
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• v.54 no.1
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• pp.75-87
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• 2024

There There is a difference in terms of administrative power in that the address of things are not an address under Public Act. In terms of location expression, it is possible to express the location more flexibly and in more detail than the road name address, so it should be improved so that it can be assigned and managed in an appropriate location, so that the location of the entire territory can be expressed together with the road name address. As a result of the comparison between the road name address and the address of things based on the analysis results of related laws such as the existing Road Name Address Act, the Building Act, and the Regulations on the Preparation and Management of Basic Address Information, it was confirmed that there are fundamental limitations of the address of things system. Accordingly, this study attempted to suggest ways to improve the address of thing system by broadly dividing it into the legal aspect and the addressable object aspect. From the legal point of view, firstly, it is necessary to improve the upper and lower level laws by unification together with a clear definition of the term subject of addressable object; secondly, according to the Building Act, facilities that are not used for residence among buildings must be given an address of thing; and thirdly, it is necessary to make it easy to use and link with heterogeneous public data by classifying the registration items of the basic address information map by type of geographical feature to be assigned an address. From the point of view of addressability, firstly, it must be given to all facilities in the relevant category so that it can be recognised that all specific facilities have object addresses, and secondly, it is necessary to be able to address the address of things to places that are used by many, even if there are no facilities.