• Journal of the Korean Institute of Telematics and Electronics A
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• v.32A no.2
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• pp.1-10
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• 1995

Since there is currently no commercial protocol simulator for CDMA mobile communication system, we need to develop a General-Purposed Protocol Test Simulator (G-PTS). This paper is concerned with the design and implementation of this G-PTS contains the multi-scenario generating functions, multi-tasking kernel and multiple interface functions. Thus it can be utilized in the test category using multiple base-stations such as soft-handoff, 3-way handoff and mulit-party call features. G-PTS is verified using the model of CDMA soft handoff scenario and the result shows its reliable operations.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.59-62
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• 1998

Satellite communication systems will play an important role in establishing high-speed information communication network ddue to the characteristics of flexibility of bandwidth, mobile communication, wide coverage, multipoint and broadcasting. Also satellite systems have the capability to supply terrestrial B-ISDN with flexible links for accessing networks as well as trunking networks. Therefore, satellites must provide compatibility to earth-based B-ISDN signalling interface, services and network capability. This paper proposed interworking model between terrestrial B-ISDN and satellite B-ISDN signalling protocol and illustrated basic call-process procedure of satellite B-ISDN signalling protocol supporting point-to-point and point-to-multipoint connection.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10c
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• pp.135-137
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• 2000

무선 인터넷 시장의 급속한 발전으로 인해 컨텐츠에 대한 사용자들의 다양한 요구가 증가되고 있고, 그로인해 WML과 WML Script를 개발자가 실제와 같은 상황에서 편리하게 개발할 수 있는 환경이 필요하게 되었다. 본 논문에서는 CP(Content Provider)들이 쉽고 편리하게 WML(Wireless Markup Language) 컨텐츠(Content)를 개발, 브라우징하기 위한 WAP(Wireless Application Protocol) Emulator의 설계와 구현에 대하여 기술한다. WAP Emulator는 WML 파싱(parsing) 모듈과 인터페이스(Interface)모듈, 그리고 Data Send/Receive 모듈로 구성되며, 디코딩(Decoding)된 WML 문서를 파싱하여 브라우저로 보여준다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2000.11b
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• pp.113-118
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• 2000

본 논문의 목적은 Electronic Program Guide(EPG)용 응용프로그램을 위한 Application Program Interface(API) 및 이를 위한 Middleware의 구현이다. 이를 위해 Windows 환경 하에서 프로그램 정보 전송 프로토콜인 Program and System Information Protocol(PSIP)을 해석하는 Parser를 구현하고, 해석한 자료를 저장하는 Database를 설계하였다. 구현된 프로그램의 테스트를 위해 디지털 방송 수신 카드를 사용한 테스트베드를 구축하였고, 지상파 디지털 방송에서 수신된 MPEG-2 Transport Stream을 사용하여 구현된 시스템을 검증하였다. 본 논문에서 개발된 Middleware는 EPG를 위한 응용프로그램 및 향후 예약시청, 예약녹화 등의 부가 서비스를 위해 활용될 수 있다.

• Proceedings of the IEEK Conference
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• 2003.07b
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• pp.799-802
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• 2003

In this paper a FPGA implementation of WEP protocol is described. IEEE 802.11 specifies a wired LAN equivalent data confidentiality algorithm. WEP(Wired Equivalent Privacy) is defined as protecting authorized users of a wireless LAN from casual eavesdropping. WEP use RC4 algorithm for data encryption and decryption, also it use CRC-32 algorithm for error detection. The WEP protocol is implemented using Xilinx VirtexE XCV1000E-6HQ240C FPGA chip with PCI bus interface.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.63 no.2
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• pp.306-312
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• 2014

The ZigBee communication method, which is the most frequently applied to the LED lighting control system, has drawbacks of low-speed and low-capacity, and the communication failure possibility due to environmental influences is on the rise. Therefore, it is important to secure the communication reliability by applying an integrated interface with a wire-wireless dual-network. This paper developed a communication module, which has a platform converging and combining the ZigBee of USN environments with the PLC of power line communication environments, to implement a dualized communication interface system supporting the wire-wireless integrated protocol, and implemented a wire-wireless networking device and a control system software technology. As a result, it was automatically switched into the PLC communication within 4.4 seconds on average when there was an access failure in the ZigBee communication network, so a reliable communication network was built.

• Journal of the Ergonomics Society of Korea
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• v.31 no.4
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• pp.577-583
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• 2012

Objective: This paper describes the process and results related to the development of gesture recognition-based natural user interface(NUI) for vehicle maintenance e-Training system. Background: E-Training refers to education training that acquires and improves the necessary capabilities to perform tasks by using information and communication technology(simulation, 3D virtual reality, and augmented reality), device(PC, tablet, smartphone, and HMD), and environment(wired/wireless internet and cloud computing). Method: Palm movement from depth camera is used as a pointing device, where finger movement is extracted by using OpenCV library as a selection protocol. Results: The proposed NUI allows trainees to control objects, such as cars and engines, on a large screen through gesture recognition. In addition, it includes the learning environment to understand the procedure of either assemble or disassemble certain parts. Conclusion: Future works are related to the implementation of gesture recognition technology for a multiple number of trainees. Application: The results of this interface can be applied not only in e-Training system, but also in other systems, such as digital signage, tangible game, controlling 3D contents, etc.

• The Transactions of the Korea Information Processing Society
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• v.4 no.10
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• pp.2521-2532
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• 1997

The next generation internet protocol, IPv6, have been developed by the IETF according to the requirements of enhancement of classic IP protocols to satisfy the lack of Internet address space as well as the support of multimedia applications. This paper presents an implementation of IPv6 protocols on the Windows NT kernel environment. In this work, we developed and also tested the basic functions, required for operating as an IPv6 host, such as IPv6 header processing, IPv6 address handling, control message processing, group membership processing and neighbor discovery functions. The implemented IPv6 protocol driver module is connected to the lower network interface card through NDIS, a standard network interface. And this driver module that operates within kernel, is implemented as it is connected to upper user applications and lower NDIS using dispatch and lower-edge functions. The developed IPv6 protocol driver can provide not only enhanced performance because it is implemented in kernel mode, but also convenience of usage to the application developers because it gives user interface as a dynamic link library.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.1 no.1
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• pp.26-39
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• 2002

This paper describes design and implementation of home network control protocol for networked home appliances. The proposed network protocol has four-layered protocol structure and device-modem interface structure for the flexibility of modems based on power line communication. The standard message set is specified to guarantee the interoperability between various home appliances The proposed protocol can be easily implemented because it has minimum network overhead.

• Journal of Korea Entertainment Industry Association
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• v.8 no.2
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• pp.283-297
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• 2014

The future of human life is expected to be innovative by increasing social, economic, political and personal, including all areas of life across the multi-disciplinary skills. Particularly, in the field of robotics and next-generation games with robots, by multidisciplinary contributions and interaction, convergence between technology is expected to accelerate more and more. The purpose of this study is that by new interface model beyond the technical limitations of the "human-robot interface technology," until now and time and spatial constraints and through fusion of various modalities which existing human-robot interface technologies can't have, the research of more reliable and easy free "human-robot interface technology". This is the research of robot game system which develop and utilizing real time synchronization engine linking between biped humanoid robot and the behavior of the position value of mobile device screen's 3D content (contents), robot (virtual robots), the wireless protocol for sending and receiving (Protocol) mutual information and development of a teaching program of "Direct Teaching & Play" by the study for effective teaching.