• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.2
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• pp.313-324
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• 2015

In this paper, in order to support the construction of a smart home environment of low power consumption, we propose a heterogeneous interface determination engine and architecture. Technology of "smart home" is in the spotlight according to the development of IT technology nowadays. Smart homes are configured with multiple sub-networks, and each sub-network is formed by the smart devices using various communication interfaces. Thus, in the smart home environment, interlocking technology between heterogeneous interfaces is essentially required for supporting communication between different networks. Further, each communication interface is a difference in power consumption, and home smart devices are often operated in 24 hours, especially smart phones and other wireless devices are sensitive to power consumption. Therefore, in order to build a energy efficient home network, It is important to select the appropriate interface to handle traffic depending on the situation. In this paper, we propose "The Heterogeneous Interface Decision Engine and Architecture for constructing of Low Power Home Network," and analyze the performance of the proposed method and verify the validity through experiments on the test bed.

• Journal of Korea Multimedia Society
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• v.13 no.8
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• pp.1235-1244
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• 2010

Most emerging smart phones support capacitive touch sensors. It renders existing gesture-based interfaces not suitable since they were developed for the resistive touch sensors and pen-based input. Unlike the flick gestures from the existing gesture interfaces, the finger flick gesture used in this paper reduces the workload about half by selecting the target and the command to perform on the target at a single touch input. With the combination with multi-touch interface, it supports various menu commands without having to learn complex gestures, and is suitable for the touch-based devices hence it minimizes input error. This research designs and implements the multi-touch and flick interface to provide an effective file management system on the smart phones with capacitive touch input. The evaluation proves that the suggested interface is superior to the existing methods on the capacitive touch input devices.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.639-648
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• 2011

Since the emergence of the smartphone and tablet PC whose wireless internet accessibility has improved, personal computing environment has shifted from PCs to mobile web based mobile devices, and therefore the use of information and the communication method have been changing rapidly. Under the circumstance, domestic universities have actively been establishing mobile websites for smartphone users. Such mobile websites, however, focused on diverse functions and a showy design rather than on usability or accessibility, and were developed simply for the purpose of public relations. For this reason, students are now faced with difficulties in using the websites. Therefore, this paper proposes a novel web interface with the consideration of usability and accessibility in order for users to easily use and assess proper information. The matters to be taken into account in developing a mobile website are an intuitive interface design, user experiences, a user customized interface and compliance with web standards.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.535-537
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• 2004

오늘날 유비쿼터스 컴퓨팅 기술, 홈 네트워크, 스마트 홈 등의 연구 개발로 여러 기기들과 컴퓨터가 연동한다. 이에 따라, 다양한 기기에 맞춰 여러 가지 사용자 인터페이스가 필요하며 이를 위해 사용자 인터페이스를 여러 번 개발해야 하는 비효율적인 일이 빈번하다. 또한, 개발자에게 있어서 여러 기기에 사용되는 서로 다른 언어를 모두 익히고 개발하는 것 역시 많은 부담을 준다. 이러한 문제를 해결하기 위해 UIML(User Interlace Markup Language)이란 마크업 언어가 제시되었다. 그러나 UIML도 여러 언어로의 변환을 위해 각각의 다른 변환 모듈을 이용해야 하는 번거로움이 있다. 본 연구에서는 다중 기기로의 사용자 인터페이스 변환과 상황인식이 가능한 마크업 언어인 HIML(Human Interaction Markup Language)을 제안하고 통합된 사용자 인터페이스 변환의 모델을 스마트 홈 환경에 적용해 보았다.

• Journal of the Korean Institute of Intelligent Systems
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• v.25 no.1
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• pp.48-56
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• 2015

In the paper, a smartphone-controlled personal mobility system(PMS) based on a compass sensor is developed. The use of a magnetic compass sensor makes the PMS move according to the heading direction of a smartphone controlled by a rider. The proposed smartphone-controlled PMS allows more intuitive interface than PMS controlled by pushing a button. As well, the magnetic compass sensor makes a role in compensating for the mechanical characteristics of motors mounted on the PMS. For adequate control of the robot, two methods: absolute and relative direction methods based on the magnetic compass sensor and wireless communication are presented. Experimental results show that the PMS is conveniently and effectively controlled by the proposed two methods.

• The Journal of Society for e-Business Studies
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• v.21 no.4
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• pp.29-40
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• 2016

Voice User Interface (VUI) is the most familiar and comfortable interface to human. Recently, with the development of cloud and AI technologies VUI has been applied to various products. The aim of this study was to identify the problems of the current VUI and to find the direction of future study by investigating the utilization status and user perception of the VUI of smartphones. A survey was conducted with 163 college students using Google Forms. The results showed that the level of recognition of VUI is high but the rate of usage is very low, and many users feel uncomfortable about the voice recognition rate, reaction speed and operation method. Most of the survey participants tried VUI out of curiosity, but only a small portion of them found it useful to continue to use it. Many participants disliked talking to machines and also did not want others to listen. The study results will guide future research efforts for improving the utilization of VUI.

• The KIPS Transactions:PartA
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• v.18A no.2
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• pp.53-60
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• 2011

Touch screen technologies are widely used as the basic input for mobile devices. However, for smartphones, touch screens have been utilized as a simple device that merely process text data. It has been considered an inappropriate multimedia input device for one to use design applications, such as painting, due to its narrow touch screen space, which makes it inconvenient to draw pictures. In this study, we propose to enhance this weakness by using infrared approach on a smartphone's input interface. The usage of infrared approach will allow for quick and accurate operations without facing any space constraints. In this paper, we provide a detailed description of the design and implementation of a smartphone user interface using infrared pointing device. Additionally, using experimental results, we prove that our proposed approach is more convenient and efficient than traditional touch screen approaches used in smartphones.

• Journal of KIISE:Computing Practices and Letters
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• v.13 no.4
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• pp.226-230
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• 2007

In the conventional desktop PC environment, keyboard and mouse are used to process the user input and monitor displays the visual information as an output device. In order to manipulate the digital information, we move the virtual cursor to select the desired graphical icon on the monitor The cursor represents the relative motion of the physical mouse on the desk. This desktop metaphor does not provide intuitive interface through human sensation. In this paper, we introduce a novel tangible interface which allows the user to interact with computers using a physical tool called "Smartpuck". SmartPuck system bridges the gap between analog perception and response in human being and digital information on the computer. The system consists of table display based on a PDP, SmartPuck equipped with rotational part and button for the user's intuitive and tactile input, and a sensing system to track the position of SmartPuck. Finally, we will show examples working with the system.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.01a
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• pp.237-238
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• 2012

우리 주변에서 인터넷에 접근할 수 있는 기반시설이 풍부하게 제공 되어 최근 출시되는 많은 가전제품과 전기전자 제품들은 인터넷에 접속하여 웹브라우저나 휴대폰을 이용하여 원격으로 감시하고 제어할 수 있다. 그러나 기존의 제품들은 대부분 인터넷 인터페이스가 없기 때문에 네트워크에 접속할 수 없어 불편함이 많았다. 따라서 본문에서는 주변의 가전제품 및 전기용품들을 스마트폰으로 감시하고 제어할 수 있는 인터넷 전원 콘센트를 위한 안드로이드 기반 스마트폰 애플리케이션을 설계하고 구현하였다. 본 논문에서 사용한 인터넷 전원콘센트 제어기는 위즈넷사에서 개발한 하드웨어 TCP/IP 프로세서인 W5300을 사용하여 AVR 마이크로프로세서로 운영 가능한 인터넷 인터페이스를 설계하고 구현한다. 하드웨어 TCP/IP 프로세서를 사용하여 이더넷 인터페이스를 구현하면 소형의 8비트 마이크로프로세서로 완전한 TCP/IP 스택의 구현이 가능하여 개발제품의 가격 경쟁력과 소형화에 기여할 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.229-230
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• 2018

본 논문에서는 시각을 잃기 전 정상적으로 스마트폰을 사용한 경험이 있는 후천적 시각장애인들이 스마트폰의 일부 기능들을 사용할 수 있도록 지원하기 위해 안드로이드 애플리케이션과 컨트롤러로 구성된 새로운 사용자 인터페이스를 구현하였다. 안드로이드 애플리케이션은 컨트롤러의 입력을 받아 전화, 문자 등의 기능을 수행하며 일련의 과정을 음성으로 출력한다. 컨트롤러는 저가의 소형 컴퓨팅 장치인 라즈베리파이를 이용하여 수백만원대의 기존 제품 대비 비용을 절감하고, 휴대성을 확보하였다.