• Transactions of the Korean Society of Mechanical Engineers A
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• v.33 no.4
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• pp.283-295
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• 2009

Haptics technology allows one to interact with virtual environments, augmented environments, and real environments providing tactual sensory information. Science and technology of haptics can in general be classified into three groups: machine haptics, computer haptics, and human haptics. This paper surveys the state-of-the-art of haptic control technology for virtual environments and teleoperation (real environments) and then proposes possible future research directions in the following areas: haptic stability control, bilateral teleoperation control, and stability enhancement control.

• ETRI Journal
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• v.38 no.6
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• pp.1085-1094
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• 2016

In this work, we present interactive automultiscopic content with mobile surface haptics for multimodal interaction. Our system consists of a 40-view automultiscopic display and a tablet supporting surface haptics in an immersive room. Animated graphics are projected onto the walls of the room. The 40-view automultiscopic display is placed at the center of the front wall. The haptic tablet is installed at the mobile station to enable the user to interact with the tablet. The 40-view real-time rendering and multiplexing technology is applied by establishing virtual cameras in the convergence layout. Surface haptics rendering is synchronized with three-dimensional (3D) objects on the display for real-time haptic interaction. We conduct an experiment to evaluate user experiences of the proposed system. The results demonstrate that the system's multimodal interaction provides positive user experiences of immersion, control, user interface intuitiveness, and 3D effects.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2676-2681
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• 2003

The Haptic Exploration Laboratory at The Johns Hopkins University is currently exploring many problems related to haptics (force and tactile information) in human-machine systems. We divide our work into two main areas: virtual environments and robot-assisted manipulation systems. Our interest in virtual environments focuses on reality-based modeling, in which measurements of the static and dynamic properties of actual objects are taken in order to produce realistic virtual environments. Thus, we must develop methods for acquiring data from real objects and populating pre-defined models. We also seek to create systems that can provide active manipulation assistance to the operator through haptic, visual, and audio cues. These systems may be teleoperated systems, which allow human users to operate in environments that would normally be inaccessible due to hazards, distance, or scale. Alternatively, cooperative manipulation systems allow a user and a robot to share a tool, allowing the user to guide or override the robot directly if necessary. Haptics in human-machine systems can have many applications, such as undersea and space operations, training for pilots and surgeons, and manufacturing. We focus much of our work on medical applications.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.25 no.6
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• pp.12-16
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• 2002

Virtual reality (VR) opened the possibility of moving beyond the 2-D world of conventional desktop systems to an immersive, multi-sensory environment generated by computer graphics. Haptic feedback (Haptics) is now starting to get recognition and use in intensive applications for manipulation, while smell and taste feedback are at the stage of early research. This paper reviews some current works on increased haptic feedback augmentation in virtual reality applications.

• Journal of Institute of Control, Robotics and Systems
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• v.9 no.8
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• pp.577-584
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• 2003

Traditional ankle rehabilitation procedures are tedious, repetitive, and require therapist's help. Therefore, they do not provide patients with good motivation to actively participate in the rehabilitation exercises. In addition, objective diagnosis and evaluation of the treatment progress have been difficult because records of exercise history are made by passive instruments from time to time. The virtual reality technology can make these procedures more fun so that patients can perform everyday rehabilitation exercises more actively. Moreover, haptics technology can give active resistance to the patients ankle motion to improve strength of muscles as well as can record ankle's motion and force histories for objective diagnosis and evaluation. This paper summarizes development of a virtual environment fur reforming the conventional ankle rehabilitation procedures. First of all, conventional rehabilitation procedures have been summarized. Secondly, haptic design and control, user interface design, virtual environment contents design are described. Lastly, mutual cooperation among many developers including medical doctors and therapists and future works are commented.

• Journal of Korea Society of Digital Industry and Information Management
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• v.5 no.3
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• pp.47-57
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• 2009

Computing environments are being more and more various due to the development of technologies. While existing computing environments used for fixed locations or particular purposes by requesting big scale monitors or complicate calculation performance, recent computing environments are used for a variety of locations and for a diversity of purposes by using various devices. Because of the needs, digital device convergence, which emphases portability and mobility, came out. However, almost researches for user interface are performed for big scale monitors or complicate calculation performance until now. By the reason, user interface on each small device is different from others, or is not appropriate for the purpose of small device. Therefore, this research is to design Zoomable User Interface (ZUI) that adapts for small devices by adding the existing user interface on small devices and haptic technologies, and to implement a user interface for PDA devices.

• Electronics and Telecommunications Trends
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• v.21 no.5 s.101
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• pp.93-108
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• 2006

햅틱스(Haptics)란 사람에게 촉감을 전달하는 방법을 연구하는 것에 관한 학문이다. 컴퓨터와 정보통신 기술의 발달과 함께 촉각 인터페이스는 시각/청각을 넘어선 새로운 정보 전달의 수단으로 대두되고 있다. 햅틱스의 연구분야는 크게 촉각을 전달하기 위한 물리적 장치를 일컫는 햅틱 인터페이스, 사람이 느끼는 촉감의 메커니즘을 연구하는 신경과학 및 심리학, 촉감을 모델링하기 위한 햅틱 렌더링, 그리고 햅틱스 기술을 적용한 응용시스템의 개발로 나눌 수 있다. 본 고에서는 현재 햅틱스 관련 연구분야의 세계적인 기술 수준을 소개 및 분석하고, 보다 사실적인 촉감을 전달하기 위한 연구동향을 기술한다. 또한 향후 햅틱스 기술이 응용될 주요 연구 분야를 예측해 본다.

• 한국HCI학회:학술대회논문집
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• 2008.02c
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• pp.30-35
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• 2008

This paper summarizes research results on the perceptual characteristics of mobile device vibrations carried out in the Haptics and Virtual Reality Laboratory at POSTECH, as a companion paper for the presentation to be offered in the haptics workshop of Korea HCI 2008. The physical characteristics, the absolute detection thresholds, and the perceived magnitudes of mobile device vibrations are briefly summarized, followed introduction to perceptually transparent vibration rendering.

• Archives of design research
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• v.14 no.2
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• pp.15-25
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• 2001

With the rapid development of current internet, digital age make human beings intangible. Haptic sense was recognized less important than visual sense and auditory sense, but it plays an important role in determining the quality of products. The goals of this study are embodying haptics using Visual and Auditory preception and designing Visual-Auditory Haptic interface, in the case of actual touching is required but impossible. This study was carried out 3 steps. Firstly, developing the concept of Visual-Auditory Haptic Interface(VAHI) was carried out to make it certain the direction of this study. To get common factors of VAHI, this study researched physical-mechanism of visual, auditory, and haptics senses, and psychological-mechanism. Secondly, identifying factors of V/A haptic sense was analysed by web-evaluation test, to be categorized 11 Emotional Haptic Factors(EHF) and some Design Haptic Factors(DHF). The relation of EHF and DHF was analysed and summarized to VAHI design check sheet. Finally, Applying DHF to VAHI by EHF according to VAHI design check sheet was validated by web-evaluation test, to be resulted 13% increase in reliability and the same in usability. Conclusively, the possibility of embodying haptics using Visual and Auditory preception was resulted to be valid. And this concept can be applied to an interface, such a internet shopping mall and virtual reality, which requires actual touching to perceive haptic information, but it is impossible.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.55-56
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• 2010