• Journal of Digital Convergence
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• v.12 no.3
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• pp.255-261
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• 2014

Advances of digital device technology such as digital cameras, smart phones and tablets, provide convenience way for people to take pictures during his/her life. Photo data is being spread rapidly throughout the social network, causing the excessive amount of data available on the internet. Photo retrieval is categorized into three types, which are: keyword-based search, example-based search, visualize query-based search. The commonly used multimedia search methods which are implemented on Smart TV are adapting the previous methods that were optimized for PC environment. That causes some features of the method becoming irrelevant to be implemented on Smart TV. This paper proposes a novel Visual Query-based Photo Retrieval Method in Smart TV Environment using a motion sensing input device known as Kinect Sensor. We detected hand gestures using kinect sensor and used the information to mimic the control function of a mouse. The average precision and recall of the proposed system are 81% and 80%, respectively, with threshold value was set to 0.7.

• Convergence Security Journal
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• v.5 no.2
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• pp.57-63
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• 2005

According to rapid development of computer and wired-wireless internet, information exchange of networking is growing. Also according as size of industry related e-commerce is bigger, it is Required the necessity of convenient user authentication system. So, the study of new authentication method to have a security and convenience is progressing systematically. Smart card of new authentication method overcome problem of established scheme. So it prospect that will be replaced One Card to have a high security and multi-function. In this papar, we suggest about the implementation of One Card System that the security of smart card and usable in all fields.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.575-576
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• 2017

Recently, research have smart gateways can provide additional services through the IoT and Big Data. However, the existing System is number of devices connected increases to the Server, the stability of the network is degraded and data security is poor. In this paper, we design a smart gateway VPN tunneling control system based on IoT to solve these problems. we propose an effective VPN tunneling technology for low-end targets such as routers, and a method for efficiently controlling traffic in real-time in an environment where the quality of the Internet line changes dramatically. It is possible to control the sensor in the home safely through the VPN at the remote place.

• The Journal of the Convergence on Culture Technology
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• v.6 no.1
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• pp.441-448
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• 2020

With help of Vehicle-to-Grid(V2G) technology battery in electric vehicle can be used as distributed energy resource and energy storage in a smart grid environment. Several problems of security vulnerability and privacy preservation can be occurred because V2G network supports 2 way communication among all components. This paper explains and makes analysis of architecture, privacy sensitive data, security vulnerability and security requirement of V2G system. Furthermore efficient architecture and operating scheme for V2G system are proposed. This scheme uses symmetric cryptosystem and hash algorithm to support privacy preservation and mutual authentication.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.8
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• pp.1494-1502
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• 2016

With the increasing availability of medical sensors and Internet of Things(IoT) devices for personal use, considering the interaction with users, it is planned to add intelligent function design to the fashionable jewelry, and develop composite multi-function intelligent jewelry through sensors identification. By means of IoT technology, while possessing communication function of intelligent jewelry, the function of intelligent jewelry can be expanded to the linkage network. In order to rapidly manage the mass data produced by intelligent jewelry sensors based on IoT, an intelligent jewelry system for health management is designed and an ontology model of intelligent jewelry system based on IoT is worked out. After the state of the services through the smart phone application is shown. The application provides a personalized service to the user and to determine the risk to show the guide lines according to the disease.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7902-7909
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• 2015

The needs for smart city management technology has been increased for efficiently managing huge and complex social infrastructures. Thus, this research introduces smart bridge facility management system based on sensor and BIM technologies so that the inadequacy of current facility maintenance system and the limitations of data objectivity, consistency and expandability can be improved. For which, current trends on sensor and BIM technologies and standard information system were investigated to derive system develop requirements, and a scenario was suggested to discuss how to utilize the suggested system. Research outcomes are expected to be utilized as a preliminary research for developing the real application framework for bridge facility management.

• Journal of Energy Engineering
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• v.28 no.4
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• pp.76-81
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• 2019

This paper is a review of the certification system required for various energy prosumer business models, including P2P energy trading and participation in small demand response programs, which are based on reliable production and consumption certification. One of the most important parameter in energy trading is ensuring the reliability of trading account balancing. Therefore, we studied to use big data pattern analysis based blockchain smart contract between trading partners to make its tradings are more reliable. For this purpose big data analysis system collected from the IoT AMI and a production authentication system using a private blockchain network linked with the AMI is discussed, using the blockchain smart contract are also suggested. Futhermore, energy trading system concept and business models are introduced.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.5
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• pp.109-127
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• 2011

Mobile Office is a new type of working method in the workplace that can be used at any time or anywhere by connecting to the network with mobile devices. This allows people to do their jobs without their physical presence in their offices to use computers. The elements in mobile office environment are advancing. They include the widespread distribution of the smart phones, the network enhancing strategy in a ubiquitous environment and expansion of the wireless internet; however, there are not enough security guidelines or policies against these threats on the new environment, the mobile office, although there is the revitalization policy of smart work supported by the government. CERT and ISAC, the known security system as of now, could be used for the secure mobile office, In this paper, suggestions are to be provided for strengthening the security of smart mobile office by analysing the functions of CERT and ISAC.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.373-374
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• 2015

스마트폰에 대한 사용빈도와 그 기술에 대한 관심이 높아지고 있는 현대사회에서는 다양한 응용 서비스를 만족하기 위한 위치기반 서비스의 필요성이 증대하고 있으며, 특히 Wi-Fi 기반의 실내 측위는 RFID와 같이 측위를 위한 추가 장비가 필요하지 않은 장점을 가지고 있기에, 본 연구에서는 다양한 측위 기술 가운데 오차 범위가 적은 Fingerprinting 방식에 무선 네트워크에서 대표적으로 사용되는 IEEE 802.11를 기반으로 KNN 방식을 이용한 실내 측위 시스템을 제안한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.329-330
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• 2019

스마트 유틸리티 네트워크 (SUN)는 가정, 빌딩, 공장 등에서 사용하는 전기, 수도, 가스와 같은 유틸리티를 효과적으로 관리할 수 있는 통신 네트워크 기술이다. 본 논문은 IEEE 802.15.4g 표준에 기반하는 Wireless-SUN 네트워크를 이용하여 원격 검침과 음성 동보 시스템을 구현하는 방안을 제시한다.