• Journal of Korean Institute of Industrial Engineers
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• v.39 no.2
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• pp.99-104
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• 2013

With diversity of mobile services (e.g., messenger, and social network service) on smartphone, the demand of text input using a soft keyboard is increasing. However, studies on subjective and physiological responses of users for various touch locations are lacking. The present study investigated the ergonomic effects according to touch locations of a soft keyboard on smartphone. The experiment of the present study measured perceived discomfort using Borg's CR-10 scale and electromyography (EMG) on forearm (abductor pollicis longus, and extensor digitorum communis) and thumb (abductor pollicis brevis, and first dorsal interossei) muscles. Perceived discomfort was significantly varied from 0.7 (extremely weak discomfort) to 2.5 (weak discomfort) depending on touch locations. %MVC according to touch locations was only significant at abductor pollicis brevis which varied from 10% to 23%. The experimental results of the present study can be utilized in the ergonomic design of a soft keyboard.

• Annual Conference on Human and Language Technology
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• 1992.10a
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• pp.321-328
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• 1992

컴퓨터의 보급과 활용이 늘어남에 따라 한글과 영문이 혼합된 문서 작성의 필요성이 계속 증대되고 있다. 컴퓨터 하드웨어 및 소프트웨어에서 사용자의 편리성과 효율성을 최대한 배려하는 "사용자 인터페이스"에 대한 연구가 증대되고 있어서 보다 편리한 한/영 혼용문서의 작성 방법이 요구되고 있다. 키보드를 통한 한/영 혼용문 입력시에 입력된 문서의 내용을 입력 오토마타 및 사전 수록 정보를 토대로 분석하여 자동적으로 한글 또는 영문으로 변환하는 자동토글 시스템 개발에 대해 설명하고, 현재의 시스템이 해결하지 못한 문제점 및 개선 방향을 기술한다.

• Journal of Korea Multimedia Society
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• v.21 no.11
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• pp.1263-1270
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• 2018

Dynamic adaptation method is an effective technique to enhance the usability by personalizing the soft keyboard layout using the user's key input information. In this paper, we propose a dynamic adaptation method of a keyboard by automatically extracting typos from key input information and using adjacent-typo information classified through the relationship between typos. This technique does not limit a range of adaptation to the inside of the key but extends the range to the neighbor key so that the adaptation effect can be achieved in a wide range at a high speed, thereby the proposed method improves the usability of the keyboard with a small number of inputs. The proposed method showed 25% increase in usability compared to the existing method through experiment and it was confirmed that usability improves up to 33% when used with the existing method.

• Annual Conference on Human and Language Technology
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• 2019.10a
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• pp.496-499
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• 2019

스마트폰의 쿼티 자판 소프트 키보드의 버튼과 버튼 사이 좁은 간격으로 인해 사용자가 의도치 않은 간섭 오타가 발생하는 것에 주목하였다. 그리고 오타 교정의 성능은 사용자의 관점에서 얼마나 잘 오타를 교정하느냐도 중요한 부분이지만, 또한 오타가 아닌 어절을 그대로 유지하는 것이 더 중요하게 판단될 수 있다. 왜냐하면 현실적으로 오타인 어절 보다 오타가 아닌 어절이 거의 대부분을 차지하기 때문이다. 따라서 해당 관점에서 교정 방법을 바라보고 연구할 필요가 있다. 이에 맞춰 본 논문에서는 대용량 한국어 말뭉치 데이터를 가지고 확률에 기반한 한국어 간섭 오타 수정 방법에 대해 제안한다. 제안하는 방법은 목표 어절의 좌우 어절 N-gram과 어절 내 좌우 음절 N-gram 정보를 바탕으로 발생할 수 있는 간섭 오타 교정 후보들 중 가운데서 가장 적합한 후보 어절을 선택하는 방법이다.

• Journal of Internet Computing and Services
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• v.15 no.5
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• pp.133-139
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• 2014

Recently the Microsoft Windows OS(operating system) is widely used for the internet banking, games etc. The kernel functions provided by the Windows OS can perform memory accesses, keyboard input/output inspection, and graphics output of any processes. Thus, many hacking programs utilizes those for memory hacking, keyboard hacking, and making illegal automation tools for game programs. Existing protection mechanisms make decisions for existence of hacking programs by inspecting some kernel data structures and the initial parts of kernel functions. In this paper, we point out drawbacks of existing methods and propose a new solution. Our method can remedy those by modifying the system service dispatcher code. If the dispatcher code is utilized by a hacking program, existing protection methods cannot detect illegal operations. Thus, we suggest that protection methods should investigate the modification of the dispatcher code as well as kernel data structures and the initial parts of kernel functions.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.40 no.4
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• pp.232-239
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• 2003

This paper discusses the design and implementation of a human-oriented interface based on computer vision that efficiently controls presentation slides. The user does not have to be confined to a keyboard or mouse any more, and can move around more freely because slides for presentation can be up and down using a general laser pointer that is used for presentation. Regions for virtual buttons are set on the slide so that the user can conveniently point the buttons using the laser pointer. We have proposed a simple and efficient method that computes the button areas in the image without complicated calibration. The proposed method has been implemented based on Microsoft PowerPoint ; moreover it can be applied to other PowerPoint-like presentation softwares. Our method for human-centered slide control enables the user to give audiences a more interactive presentation in a natural way.

• Journal of Korean Institute of Industrial Engineers
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• v.42 no.1
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• pp.57-64
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• 2016

Pen-based interaction is universally available on smart devices and especially on Tablet PCs. Previous studies compared various input methods like fingers, a mouse or a stylus pen on PCs or on a touchscreen based devices such as smart phones. At the same time, various soft keyboard applications are being developed on application stores of smart devices. However, these previous studies did not suggest which one is a suitable keyboard application for Tablet PCs when users perform a certain interaction as input type. In this study, we compared two types of input methods (finger and pen) and three types of soft keyboard applications (QWERTY, Gesture and Swype) in a Tablet PC using performance measurements (accuracy and input speed) and discussed what types of applications showed better performance with each interaction on tablet PC. From these results, recommendations for the keyboard types depending on the input methods on tablet PCs were developed.

• Journal of Korea Society of Industrial Information Systems
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• v.11 no.4
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• pp.105-111
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• 2006

Recently, many electronic system with various character input systems for information representation and delivery. Character input systems for the Korean language are keyboards and mobile phone that have 12 or more input buttons and so on. But these input systems give difficulties for the disabled because the input system have 12 and more small input buttons. In this paper, we developed Korean language input software in order to develop a Korean language input system for the handicapped. The developed system have 5 input buttons and 2 function buttons for Korean language typing using Korean language shape input scheme. This system is not only easy to use by the handicapped, but also simple for children and foreigner to learn Korean language.

• Proceedings of the KIEE Conference
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• 2003.11b
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• pp.211-214
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• 2003

Current VOD embodiment way is embodied using PC base. However, achieved research that embody this by Embedded System that PC base is not. OS of this system used WindowsCE.net and x86core used having built-ined SC1200(National company's Geode's familys) by CPU and memory used 128MByte SDRAM. Used Mpeg Decoder for processing of video data, and used Enthernet Controller for Internet. Composite, component, S-Video of video output section of this system is and select one of these and connect on TV and did so that get into action. Actuality implementation manufactured necessary BIOS, WinodwsCE.NET Porting, DeviceDriver in system development and necessary simple Application in action confirmation, and Video Player used Window Media Player had included to WindowsCE.net. Therefore, treatise that see to supplement shortcomings of VOD service been embodying in current PC in Embedded System's form embody that there is sense do can.

• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.52-61
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• 2010

In recent, the interests of multi-user systems have been increased. Multi-user systems allow a number of users to access the system simultaneously. Security is one of the key issues to be addressed in a multi-user environment. We propose a solution based on the NTFS file system that provides the personal data security and considers the convenience of users. The system increases the convenience of users by simplifying the complexity of the security setting on NTFS. We also propose a variety of policies that prevent from the conflicts incurring when different users set up the personal folders simultaneously and do not set up the important folders such as the window system folders as personal folders. In addition, our system supports the function of setting up the prohibition folder lists so that no one can not set the folder to their personal folders.