• Title, Summary, Keyword: Virtual Keyboard

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Implementation of a Virtual Keyboard Using Infrared Distance Sensor (적외선 센서를 사용한 가상 키보드의 구현)

  • Jang, Su-Ho;Whang, Whan-Kyu
    • Journal of Industrial Technology
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    • v.29 no.A
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    • pp.77-82
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    • 2009
  • In this paper, we implement a virtual keyboard using infrared distance sensor. A virtual keyboard allows a user to enter characters by selecting keyboard layouts with sensing areas. By projecting infrared light on any flat surface and detection devices we can sense the user's input characters. Unlike a conventional physical keyboard, the virtual keyboard provides convenience in terms of mobility, portability, and space savings.

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The Measurement of Skilled Typist's Typing Position for Developments of New Text Entry Input Device (새로운 문자입력장치 개발을 위한 숙련타이피스트의 타이핑 위치 측정)

  • 김진영;이호길;황성호;최혁렬
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.125-130
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    • 2001
  • Skilled typists can type characters or words without looking at keyboard, relying on the finger's relative position. If the relative positions of the fingers can be identified, a virtual keyboard may be accomplished by applying the concept of "DataGlove" or "FingerRing". The virtual keyboard may be efficient as a new mobile input device supporting QWERTY keyboard layout. For the purpose of investigating skilled typing pattern, in this paper the touch-positions of the fingers are measured with a touchscreen while five skilled typists type a long sentence. From these measurements it can be observed that the groups of touch-positions are classified into alphabet characters. Though there are some overlapped groups we can find constant distances capable of being discriminated among the groups from investigation of the change of touch-position for touch-time. Based on the analysis, the prediction algorithm of the constant distance is proposed and evaluated, which is useful for realization of a portable virtual keyboard.le virtual keyboard.

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Experimental Investigation on Skilled Human′s Typing Pattern for Development of New Input Device (새로운 입력장치 개발을 위한 숙련자의 타이핑 동작에 관한 실험적 연구)

  • 김진영;최혁렬;이호길
    • Journal of Institute of Control, Robotics and Systems
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    • v.9 no.9
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    • pp.720-726
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    • 2003
  • A virtual keyboard may be efficient as a new mobile input device supporting QWERTY keyboard layout. As a preliminary study for developing a virtual keyboard, the typing pattern of a skilled human is investigated. In the study the touch-positions of the fingers are measured with a touchscreen while five skilled typists perform typing of long sentences. From these measurements it can be observed that the groups of touch-positions are classified into alphabetic characters. Though there are some mismatches, we can find constant distances capable of being discriminated among the groups. Based on the analysis the prediction algorithm of the constant distance is proposed and evaluated, which is useful for realization of a portable virtual keyboard.

Keyboard for Virtual Reality Head Mounted Display using Electro-oculogram (EOG를 사용한 가상현실 HMD용 키보드 구현)

  • Kim, Byeong-Jun;Kwon, Ki-Chul;Yang, Young-Man;Kim, Nam
    • The Journal of the Korea Contents Association
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    • v.18 no.1
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    • pp.1-9
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    • 2018
  • A keyboard system for hands-free virtual reality head mounted display using electrooculogram (EOG) signal which occurs during the eye-blinking is proposed. This system consists of display device, gyroscope sensor, gravity sensor and electro-encephalogram (EEG) sensor, and it is implemented with Unity3D engine for system control and graphic processing. If the input language of proposed keyboard system is Korean, i.e. Hangul, the Chonjiin keyboard method is utilized; but for the English spelling, numbers or special characters, $3{\times}4$ keyboard method is used in order to solve the spatial problem. By the implemented method, it can be verified that the user can handle the keyboard input of virtual reality head mounted display with only neck movement and EOG, instead of using hands.

User Adaptive Variable Keyboard for Smart Devices (스마트 기기 사용자 적응형 가변 키보드)

  • Jeoung, You-Sun;Choi, Dong-Min
    • The Journal of the Korea institute of electronic communication sciences
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    • v.12 no.6
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    • pp.1167-1172
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    • 2017
  • Desktop computers, which were the main means of Internet use and information activity, were pushed out by smart devices that emphasized mobility and simplicity. The recent information production and consumption activities are performed through smart devices, but there is no input device for smart devices that can fully replace traditional input devices such as full-size PC compatible keyboards. Because of the small size of the virtual keyboard that uses the touch screen of the smart device, typographical error occurs at a high rate. In this paper, we propose a variable virtual keyboard that minimizes the typographical errors of the conventional virtual keyboards. The proposed method minimizes the user 's input error by adjusting the size of each key of the virtual keyboard based on accumulated dataset of position and pressure of the user' s input error even though there is no difference in the key position arrangement of the conventional virtual keyboards.

Virtual Keyboard against Social Engineering Attacks in Smartphones (사회 공학적 공격에 대응하는 색 기반 스마트폰 가상 키보드)

  • Choi, Dongmin;Baek, Cheolheon;Chung, Ilyong
    • Journal of Korea Multimedia Society
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    • v.18 no.3
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    • pp.368-375
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    • 2015
  • Nowaday, financial institutions provide secure mobile keyboard solutions to keep their mobile banking services safe. However, these are still vulnerable to attacks, such as shoulder surfing attack. Especially, in the case of handicapped person such as visual impairment and blindness, they are more vulnerable than ordinary person because of inconvenience of secure information input. Among them, we focused on the color blind. For the color blind, 4-color based secure keyboard method causes more inconvenience to notify exact color. Thus, we propose a secure mobile keyboard solution to provide advanced functionality for the color blind users. Our method is based on 4-color theorem to support color blind users. In addition, our scheme is robust against shoulder surfing attack. According to the evaluation result, our method offers increased security against shoulder surfing attack compare with existing methods.

Tangible Interaction : Application for A New Interface Method for Mobile Device -Focused on development of virtual keyboard using camera input - (체감형 인터랙션 : 모바일 기기의 새로운 인터페이스 방법으로서의 활용 -카메라 인식에 의한 가상 키보드입력 방식의 개발을 중심으로 -)

  • 변재형;김명석
    • Archives of design research
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    • v.17 no.3
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    • pp.441-448
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    • 2004
  • Mobile devices such as mobile phones or PDAs are considered as main interlace tools in ubiquitous computing environment. For searching information in mobile device, it should be possible for user to input some text as well as to control cursor for navigation. So, we should find efficient interlace method for text input in limited dimension of mobile devices. This study intends to suggest a new approach to mobile interaction using camera based virtual keyboard for text input in mobile devices. We developed a camera based virtual keyboard prototype using a PC camera and a small size LCD display. User can move the prototype in the air to control the cursor over keyboard layout in screen and input text by pressing a button. The new interaction method in this study is evaluated as competitive compared to mobile phone keypad in left input efficiency. And the new method can be operated by one hand and make it possible to design smaller device by eliminating keyboard part. The new interaction method can be applied to text input method for mobile devices requiring especially small dimension. And this method can be modified to selection and navigation method for wireless internet contents on small screen devices.

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Learning of Skilled Typist´s Finger Positioning for New Input Device Scheme

  • Kim, Jin-Young;Lee, Ho-Gil;Hwang, Sung-Ho;Park, Hyouk-Ryeol
    • 제어로봇시스템학회:학술대회논문집
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    • pp.153.4-153
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    • 2001
  • Skilled typists can type characters or wrds without looking at keyboard, relying on the finger´s relative position. If the relative positions of the fingers can be identified, a virtual keyboard may be accomplished by applying the concept of "DataGlove" or "FingerRing". The virtual keyboard may be efficient as a new mobile input device supporting QWERTY keyboard layout. For the purpose of investigating skilled typing pattern, in this paper the touch-positions of the fingers are measured with a touchscreen while four skilled typists type a long sentence. From these measurements it can be observed that the groups of touch-positions are classified into alphabet characters. Though there are some overlapped groups we can find constant distances capable of being discriminated ...

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A Design and Implementation of Natural User Interface System Using Kinect (키넥트를 사용한 NUI 설계 및 구현)

  • Lee, Sae-Bom;Jung, Il-Hong
    • Journal of Digital Contents Society
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    • v.15 no.4
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    • pp.473-480
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    • 2014
  • As the use of computer has been popularized these days, an active research is in progress to make much more convenient and natural interface compared to the existing user interfaces such as keyboard or mouse. For this reason, there is an increasing interest toward Microsoft's motion sensing module called Kinect, which can perform hand motions and speech recognition system in order to realize communication between people. Kinect uses its built-in sensor to recognize the main joint movements and depth of the body. It can also provide a simple speech recognition through the built-in microphone. In this paper, the goal is to use Kinect's depth value data, skeleton tracking and labeling algorithm to recognize information about the extraction and movement of hand, and replace the role of existing peripherals using a virtual mouse, a virtual keyboard, and a speech recognition.

Analysis on Vulnerability of Password Entry Using Virtual Onscreen Keyboard (가상 온스크린 키보드를 이용한 비밀번호 입력의 취약점 분석)

  • Shakirov, Bobur;Kim, Hyejin;Lee, KyungHee;Nyang, DaeHun
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.26 no.4
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    • pp.857-869
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    • 2016
  • It is a well-known fact that password based authentication system has been threatened for crucial data leakage through monitoring key log. Recently, to prevent this type of attack using keystroke logging, virtual onscreen keyboards are widely used as one of the solutions. The virtual keyboards, however, also have some crucial vulnerabilities and the major weak point is that important information, such as password, can be exposed by tracking the trajectory of the mouse cursor. Thus, in this paper, we discuss the vulnerabilities of the onscreen keyboard, and present hypothetical attack scenario and a method to crack passwords. Finally to evaluate the performance of the proposed scheme, we demonstrate an example experiment which includes attacking and cracking by utilizing password dictionary and analyze the result.