• Korea Multimedia Society
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• v.3 no.1
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• pp.56-63
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• 1999

• Asia pacific journal of information systems
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• v.6 no.1
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• pp.109-124
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• 1996

• Journal of the Korean Institute of Educational Facilities
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• v.5 no.2
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• pp.16-29
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• 1998

Bell Laboratory introduced the sound and visual system for the first time in 1927. Since then, the development of telecommunication technology made it possible for people located far away to communicate each other watching through the TV screen. Over the period different types of telelecturing systems have prospered in line with the development of telecommunication technology. Therefore, it is quite natural that telelecturing/conferending system attracts the attention of many people as a new way of educating people located in a long distance. In the industrial sector, telelecturing systems already come into wide use to save time and training and travelling expense. In this study, I examine the concept and characteristics of telelecturing/conferencing system and introduce different types telelecturing system developed in parallel with the development of communication technology. Then, I analyze how those merits of the telelecturing system can be applied to educational purpose. Finally, I propose and design ideal telelectuirng/conference facilities consisting of telelecturing rooms, bilateral movie system, seats, ceilings, color, TV screen, lighting, acoustics, humidities and temperature control, security system, projection system to maximize the educational purpose and effectiveness.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.10a
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• pp.375-379
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• 2001

This paper describes a development of remote measurement robot with vision system. The developed robot consists of robot controller and host PC program. The robot and camera can move with 2 degree of freedom by independent remote controlling a user friendly designe joystick. A visual image and command data translated through 900MHz and 447MHz RF controller, respectively. To show the validity of the developed system, operations of the robot in the field area were illustrated.

• Journal of Korea Multimedia Society
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• v.4 no.5
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• pp.430-438
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• 2001

In this paper, we present the design and implementation of a web-based distance learning system supporting the collaborative browsing. Our system consists of an education affair management system, a video conferencing server/client, a white-board server/client, a session manager and a web browser sharing system. Among other things, our collaborative web browser is unique and not found in any other system. The web browser shows synchronously the same web pages as the lecturer moves through them. Therefore, it allows the student to feel real-time surfing gust as the lecturer would. The session manager supports multi-user and multi-group, and integrates various synchronous collaborative component into one distance learning system by providing the same session data and information of users in a session group. Our collaborative browsing system can increase the efficiency of distance learning and provides the effect of learning in the same classroom by supporting various synchronous functionalities, such as collaborative browsing.

• KIPS Transactions on Software and Data Engineering
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• v.10 no.1
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• pp.29-34
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• 2021

The real-time video education is used as an effective method of operating classes that replaces face-to-face education of instructors and learners in remote areas. However, the existing video call and video conferences system is mainly used, and this is effective in linguistic education because it focuses on lecture through video, but it is not utilized in other education. In this paper, we propose a design model of real-time video system that can improve the effectiveness of science curriculum and mathematics education by providing the functions that can be utilized during class by improving limitations of image - oriented image education.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04a
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• pp.430-432
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• 2002

가상현실 기반 실시간 원격교육 시스템에서는 오디오와 비디오 그리고 Presentation Slide외에 3D VRML Data를 이용하여 강의를 구성한다. 강사의 음성과 화상 외에 텍스트와 2D, 3D Graphics를 이용함으로써 강의의 효율을 높이고 있다. 이러한 실시간 강의 시스템에서 발생하는 각 미디어간의 동기화를 위해 본 논문에서는 Synchronization Event Model(SEM)을 정의하고, 이것을 기반으로 한 가상현실 기반 실시간 원격 교육 시스템에서의 멀티미디어 통합 브라우저를 설계하고 있다.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.05d
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• pp.823-828
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• 2002

IP 멀티캐스팅은 네트웍을 통한 다자간 화상회의 및 인터넷 생방송 둥 네트웍기반에서 실시간 멀티미디어 데이터를 지정된 대역폭을 사용하여 1:N으로 전송하는 기술로 인터넷문화의 발달과 함께 활발히 연구가 진행되고 있는 분야이다. 본 연구시스템에서는 이와 같은 IP 멀티캐스팅 기술을 이용하여 교육자시스템에서 제공하는 교육용 멀티미디어 데이터를 실시간으로 압축하여 그룹으로 등록된 피교육자 PC에 강제적으로 멀티캐스트 하는 기능을 제공한다. 피교육자는 교육자가 제공하는 교육 미디어를 보기 위해서 별도의 작업을 각자의 PC에서 할 필요가 없으며 교육자의 시스템에 의해 일괄 제어된다. 또한 시스템 유지보수 등에 활용되고 있는 원격 PC제어기술은 그룹 내 등록된 PC를 일괄적으로 동시 통제하여 피교육자의 교육 중 일탈행위를 막고 교육자가 제공하는 교육 내용에 집중하도록 한다. 그밖에 그룹내 피교육자와 교육자간에 양방향으로 대화할 수 있도록 시스템을 구성하여 교육효과를 증대하도록 하였다.

• Journal of Internet of Things and Convergence
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• v.6 no.4
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• pp.27-32
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• 2020

Along with the aging of the population, the number of dementia patients is increasing, and the social and economic burden is also increasing. Currently, the effective way to manage dementia patients is to identify patients with dementia early. However, in rural and island areas where medical staff are scarce, there is a problem that it is difficult to visit a hospital and get an early examination. Therefore, we propose a remote early detection system for dementia to solve the problems. The remote dementia early diagnosis system is a system that allows a patient to receive examination and treatment from a remote dementia expert using remote medical technology based on real-time image communication. The remote early diagnosis system for dementia consists of a local client system used by medical staff at health centers in the island, an image server that transmits, stores and manages images, and an expert client used by remote dementia experts. The local client subsystem satisfies the current medical law's remote collaboration by allowing the patient to use it with the health center's medical staff. In addition, expert clients are used by dementia experts, and can store/manage patient information, analyze patient history information, and predict the degree of dementia progression in the future.

• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.299-307
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• 2021

As the COVID-19 pandemic spread around the world, more and more universities are conducting real-time distance video lectures using ZOOM, Webex, and MS Teams. This study attempts to identify the factors influencing learner satisfaction of real-time distance video lectures. Based on the existing research, it was composed of five elements (system factor, content quality, interaction, self-direction, and learning motivation) as learner satisfaction elements of real-time distance video lectures. As a result of analyzing the structural equation model of 160 effective questionnaires by conducting a survey of college students in the metropolitan and Chungcheong areas, it was found that three factors (interaction, self-direction, and learning motivation) influence learner satisfaction. Real-time distance video lectures are expected to continue to expand in the future. Therefore, universities should continuously increase learner satisfaction through the development and evaluation of real-time distance video lecture satisfaction models.