• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.10 no.3
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• pp.98-102
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• 2011

This paper proposes a method of a touch-based remote control and sensor information acquisition of a mobile robot using a smart phone. An application in a smart phone processes the acquired sensor information and conducts autonomous navigation. By touching the screen of the smart phone, a series of points obtained from designated curve traces are analyzed and provide control of a robot. This study develops a mobile application that acquires and handles data from a mobile robot and sends appropriate action commands through remote control using Bluetooth communication with a smart phone. The utility and performance of the proposed control scheme have been successfully verified through experimental tasks using an actual smart phone and a mobile robot.

• Journal of the Ergonomics Society of Korea
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• v.29 no.4
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• pp.541-546
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• 2010

The gesture 'Flick' is the most fundamental and important part for efficient interactions in the touch screen that are being extensively applied to mobile phones. This study investigated users' satisfaction of the flick operation in representative touch phones, and measured their performances with established three measures: gap between finger and initial cursor, the number of moved lists per 0.2 seconds, and the number of moved lists after ten continuous flicks. The measurement was performed with high speed camera and motion analysis software. The flick movement in mobile phone with high users' satisfaction showed that the gap between finger and cursor positions was less and the speed reached high within 0.6 seconds quickly and then was drastically slow down. Especially, maximal and common time intervals between continuous flicks were measured with an experiment. Based on the evaluation and measurement, several design guidelines for efficient flick performances were suggested.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.971-975
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• 2009

최근 다양하게 출시되는 터치스크린 휴대폰 시장의 흐름에 맞춰 터치 인터랙션 유형에 관한 연구 또한 활발히 진행되고 있다. 그러나 기존의 연구들은 터치 입력 인터랙션 유형의 사용자 모델에만 초점이 맞추어져 있는 상태이다. 시스템 모델의 이해부족 현상과, 터치 인터랙션의 사용자 모델과 시스템 모델사이의 차이점에서 나타나는 충돌은 잘못된 인터랙션 문제를 발생시키며, 사용자들에게 혼란 줄 수 있다. 때문에 본 연구는 터치 입력 인터랙션 유형의 시스템 모델에 초점을 맞춰서 진행하였다. 터치 인터랙션 유형 시스템 모델의 정의에 있어서 시간 축을 기준으로 터치 인터랙션 유형을 정의하였다. 정의된 시스템 모델을 기반으로 6개의 기본 입력 인터랙션을 각각 비교하여 상관관계를 도출하였고, 이 결과의 유효성 검증을 위해 전문가 인터뷰를 실시했다. 정리된 터치 인터랙션 유형의 시스템 모델 정의 및 상관관계는 앞으로 다양한 터치 기반 인터랙션 개발 시 최적화된 터치 유형 개발에 활용 될 수 있으며, 개발에 참여하는 디자이너, 개발자, 기획자들이 시스템 기능을 이해하는데 도움을 주며 그들의 원활한 의사소통 수단으로 쓰임과 동시에 고객들과의 의사소통에 효과적으로 쓰일 것으로 기대된다.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.173-178
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• 2008

Due to a rapid increase in demand for bigger-screen-equipped mobile phones in recent years, many big-name-manufactures have been releasing touch-screen-enabled devices. In this paper, various touch-screen-input methods have been summarized into 6 different categories. How? By tracing each user's finger print path, user's input pattern and behavior have been carefully recorded and analyzed. Through this analysis, what to be considered before designing UI is presented in great details.

• Journal of Korean Institute of Industrial Engineers
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• v.36 no.1
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• pp.52-58
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• 2010

The level of competition has reached the limits in cellular phone market and the cellular phone manufacture companies started to focus their solution in user interface. Design issues with controllability led the development and renovation of such products to the use of the touch-screen phone. Depending upon the readability, technical advances, portability and controllability, user satisfaction of touch-screen phones could vary significantly. In this research, the controllability was dealt in regard to various grip postures, in order to improve menu layout which fits for using the thumbs of both hands and a thumbs of single hand. Regression models are found to the suggest the location of buttons on the screen by redesigning the menu layout, it is expected to improve both controllability and satisfaction of the user. This result can be applicable not only to mobile phone design, but also to the design of various hand-held devices using a touch screen.

• Science of Emotion and Sensibility
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• v.11 no.4
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• pp.575-588
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• 2008

This study is to inquire respective patterns of mental models caused by wrongful usages which can be experienced when a user who is used to a keypad-based mobile phone starts using a touch screen mobile phone and to find out the features of the user's logical process of correcting such wrongful usages to a new mental model. In addition, design improvement to be considered for easy generation of the mental model regarding touch screen mobile phones was reviewed in this study. We set up test subjects for the most frequently used seven high priority functions among touch screen phone functions and carried out the subject assessment together with interview surveys after the video observation experiment. Our test results show that test subjects who were used to keypad-based mobile phones tend to use operation knowledge related to the computer operational system(Window) or the web browse, navigation including Tap or Double Tap in order to correct the mental model when a wrongful usage is made. In addition, the result of comparison and analysis of the subject assessment and the video observation experiment data shows that wrongful usages of touch screen mobile phones mostly occurred in the field of 'information feedback' and 'navigation' among mobile phone components.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.14 no.2
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• pp.31-37
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• 2015

Recently, mobile phones have become necessary tools for everyday life. In this study, a device that can serve as a separation between a touch panel and an LCD module in a mobile phone was devised for mass repair processes at a smaill business. We used a wire cutting method to separate the bonding plate area between the modules. The device is composed of DC motors and stepping motors that can deliver a precise cutting motion. The motor control system is connected by individual control modules to a CAN network. The developed device showed excellent performance at high temperature conditions.

• Journal of the Korean Institute of Intelligent Systems
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• v.22 no.5
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• pp.669-674
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• 2012

This study presents the remote control of a mobile robot using iPhone based on Wi-Fi communication. The paper proposes the following set of user interfaces : acceleration mode, arrow touch mode, and jog-shuttle mode. To evaluate the proposed three interfaces, a virtual robot is controlled in a monitor to follow a referenced trajectory using iPhone. In simulation, the standard deviation and summed errors are analysed for showing good and weak points of the proposed three interfaces. The proposed interface replace an additional remote controller requiring cost with a cellular phone. Results of an experiment show that the proposed interfaces can be effectively used for remote robot control.

• Journal of Advanced Navigation Technology
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• v.14 no.6
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• pp.928-934
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• 2010

In this paper, the method introduce for touching signals and run the application on the multi touch environment using infrared light. When the user touches the screen, the infrared camera make a movie the light and the light which made through image processing communicate from TUIO(Tangble User Interface Object) protocol to Application. this Program is using the delivery informations which are occurred the event to Application. The Application which use the touch can exchange the Andoroid Phone between Mobile picture supervision Application also this equipment introduces about the musical entertainment Application which play a music many users at the same time.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.262-267
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• 2008

애플의 iPhone 및 LG 의 프라다 폰 등을 기정으로 국내, 국외 제조사들은 전연 터치 스크린을 적용한 다양한 모바일 폰을 출시 또는 출시를 앞두고 있다. 모바일 폰에 적용되는 전면 터치 스크린은 4-방향키 기반의 일반적인 네비게이션의 제한에서 벗어나 보다 다양하고 진보된 스타일익 인터랙션을 가능하게 한다. 반면 이런 장점은 오히려 사용자에게 많은 학습을 요구하게 되며, 다른 제조사에서 제작된 하드웨어로 바꿀 때마다 또 다른 인터랙션 스타일을 학습하고 적응해야 하는 불편을 야기하게 만드는 원인이 될 수 있을 것이다. 따라서, 본 연구는 전면 터치 스크린 기반의 모바일 폰에 적용할 공통적이고 기본적인 인터랙션 스타일 가이드라인을 도출하는 것을 목적으로 한다. 이를 위해 기존에 출시된 터치 스크린이 일부 적용된 단말을 검토하여 기본적인 인터랙션 요소를 추출하였다. 그리고, 해당 요소에 적합한 인터랙션 스타일을 선정하기 위한 사용자 조사를 수행하고, 이를 기반으로 기본 인터랙션 가이드라인을 도출하였다. 본 연구에서 제안된 인터랙션 스타일 가이드라인은 다양한 제조사악 전면 터치 스크린 기반의 모바일 폰을 사용함에 있어 기본적인 요소에 대해서는 일관되고 예측이 가능한 사용 경험을 제공하도록 도움을 줄 수 있을 것이다.