• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.69-70
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• 2011

스마트폰 열풍과 함께 풀터치 방식의 기기가 널리 보급되면서 문자를 입력하기 위한 가상 키보드는 필수적인 소프트웨어가 되었다. 하지만 기존의 키보드는 입력시간이 오래 걸리거나 작은 버튼 크기로 인해 사용효율이 높지 못하였다. 이러한 문제를 해결하기 위해 한글의 원리를 응용하여 알파벳을 획의 단위로 분리한 뒤 이를 조합하는 형태로 입력하여 시간적 효율과 공간적 효율을 모두 높일 수 있는 방안을 제시한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.503-506
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• 2021

본 연구에서는 적은 힘으로도 누워있는 환자의 자세를 바꾸어 줄 수 있는 침대 모형을 만들었다. 시중에서 판매되고 있는 변형 환자 침대는 침대의 변형을 수동으로 바꾸거나 침대에 연결되어 있는 구동기로 단순히 환자의 자세를 바꿀 수 있다. 본 연구에서 만들어진 침대는 침대를 다리 하단 / 다리 상단 / 상체 파트로 나누어 따로 또 병렬로 자세를 바꿀 기능을 구현하였을 뿐 아니라, 스마트폰 앱에 의한 제어 구동도 가능하고, 편안한 자세를 이루는 각 파트의 각도를 편리하게 기억시킬 수 있고, 버튼 한번 누름으로 기억된 형태로 구성이 가능하다. 또 누워있는 환자가 관절을 사용하지 않아 굳는 형태를 방지하기 위한 운동 기능이 추가되어 파트별로 운동을 시킬 수 있도록 하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.579-580
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• 2020

본 논문에서는 승강기를 이용할 때의 위험 요소와 불편함이 최소화된 서비스를 제공하기 위한 가상 승강기 도어 자동 센싱 시뮬레이션을 제안한다. 이 프로그램은 실제 서비스를 이용하는 듯한 가상의 승강기 테스트 환경을 제공함으로써 개발 시간을 줄이고, 설계의 정합성을 높여준다. 또한, 아두이노 기반의 승강기 도어 제어기 디바이스 펌웨어와 구현된 스마트 버튼 펌웨어를 블루투스로 연결하고, 가상 시뮬레이션 프로그램에 연동시킨다. 이때, 연동된 오픈소스 센서는 참여 연구원들의 다양한 코딩 응용을 가능하게 해준다. 본 논문에서는 코딩을 통해 구현된 결과를 시뮬레이션 함으로써 연구원들의 창의성을 향상시키고 효과검증을 통한 성취를 도출한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.1349-1352
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• 2021

본 학술지는 기존의 공공 행정서비스에서의 복잡한 업무처리를 간단하게 처리할 수 있는 FAQ 형태의 챗봇서비스를 제안한다. 본 논문이 제안하는 주요 특징은 다음과 같다. 버튼, 대화, STT(Speech To Text)를 통한 사용자 기반 UI/UX를 제공한다. 딥러닝을 통한 Synonym, Typo를 검출하여 가장 높은 정확도의 Entity로 변환해준다. 이를 통해, 사용자는 해상물류 서비스를 이용하는데 있어 부담감을 해소하고 편리함을 얻을 수 있다.

• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.8
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• pp.85-92
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• 2016

Mobile cloud computing (MCC) is not just extensions of cloud concepts into mobile environments, but the service technologies that all mobile devices including smartphone can use the desired services by using cloud technology without the constraints of time and space. Currently, a lot of works on mobile cloud computing have been actively researching, whereas user interfaces are not so much researched. The main features and contributions of this paper are as follows. First, develop UI considering UX that is different from conventional interfaces supported by SPICE. Second, combine two button interface into one button interface when keyboard is used in mobile cloud computing clients. Third, develop a mouse interface suitable for mobile cloud computing clients. Fourth, in mobile cloud computing client, solve a problem that the selection of button/files/folder has at the corner. Finally, in mobile cloud computing clients we change mouse scroll mapping functions from volume button to scroll interface in touch-screen. The results of performance evaluation shows that users can input easily with the increased and fixed mouse interface. Since shortcut keys instead of the complex button keys of keyboard are provided, the input with 3-6 steps is reduced into 1 step, which can simply support complex keys and mouse input for users.

• Journal of the HCI Society of Korea
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• v.11 no.3
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• pp.5-12
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• 2016

The number of visually-impaired people using a smartphone is currently increasing with the help Text-to-Speech(TTS). TTS converts text data in a mobile application into sound data, and it only allows sequential search. For this reason, the location of buttons and contents inside an application should be determined carefully. However, little attention has been made on TTS service environment during the development of mobile newspaper application. This makes visually-impaired people difficult to use these applications. Furthermore, a mobile application interface which also reflects the desire of the low vision is necessary. Therefore, this paper presents a mobile newspaper interface which considers the accessibility and the desire of various visually impaired people. To this end, the proposed interface locates buttons with the consideration of TTS service environment and provides search functionality. The proposed interface also enables visually impaired people to use the application smoothly by filtering out the words that are pronounced improperly and providing the proper explanation for every button. Finally, several functionalities such as increasing font size and color reversal are implemented for the low vision. Simulation results show that the proposed interface achieves better performance than other applications in terms of search speed and usability.

• Journal of Internet Computing and Services
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• v.18 no.1
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• pp.21-26
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• 2017

In this paper, an USB-OTG (Uiversal Serial Bus On-the-go) interface module was designed with the iris information for personal identification. The image recognition algorithm which was searching face and iris areas, was proposed with pixel differences from eye blinking after several facial images were captured and then detected without any activities like as pressing the button of smart phone. The region of pupil and iris could be fast involved with the proper iris area segmentation from the pixel value calculation of frame difference among the images which were detected with two adjacent open-eye and close-eye pictures. This proposed iris recognition could be fast processed with the proper grid size of the eye region, and designed with the frame difference between the adjacent images from the USB-OTG interface with this camera module with the restrict of searching area in face and iris location. As a result, the detection time of iris location can be reduced, and this module can be expected with eliminating the standby time of eye-open.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.570-572
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• 2015

NFC (Near Field Communication) is an area of the RFID technology is a kind of short-range wireless communication. NFC technology is to utilize the data transfer, the access control system is usefully employed in many fields, such as mobile payment. Recently smartphone application development using NFC is activated, recognition of the convenience of the current NFC tag is insignificant state. In this paper, it is the content of the Application that was created in order to provide the knowledge of convenience food to the customer to visit the mart. Users with Mart, using smartphones, at a NFC tag that is attached to the food display stand food information, purchasing tips, keeping method, data such efficacy is provided over the screen of the smartphone. If you purchased the food is placed in the refrigerator "moves to the food list of application to click the button, through the food list screen their food list in the refrigerator, and by providing information such as expiration date, the user There is help me to be able to buy the more convenient food.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.906-909
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• 2015

The smart educational environment using the IWB(Interactive White Board) system has been built and developed since e-learning industry was developed significantly in the early 2000's. Basically the IWB system includes the board writing software, and instructors can further increase the training effect by handwriting on the IWB. In this paper we propose new menu layout mechanism of board writing software that only a few menu buttons are displayed based on the frequency of menu usage and the position of menu layout is dynamically moved according to user's writing position. The implementation of our proposed mechanism shows that it is simple and easy to use without user's unnecessary movement. Therefore it is expected to contribute greatly to the development of a future smart education.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.8 no.1
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• pp.47-55
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• 2014

Almost of alternate computer access devices which assist people with disabilities to utilize the computer connected to computer by some cables or installed in as a S/W program. These devices have some spatial limitations to the people with disabilities, it can't guarantee the free and diverse access to the computer. For these reasons, in this paper, an Android-based mouse program for alternative computer access was developed. A people with physical disabilities who has some limitation of hand movements can use it in anywhere and anytime using only the fine motor skill of the upper limbs. The developed device recognizes the user's point touch and transforms it into the location of mouse cursor. The location information transferred to the computer via Bluetooth communication module equipped in smart devices. Also the group scanning method which can reduce the user's fatigue degree was employed and click, double click, drag & drop functions by hand's movements were equipped. The developed device will help the people with disabilities to use computer with brief touch and convenient operation without spatial limitation.