• Proceedings of the Korea Contents Association Conference
• /
• 2003.05a
• /
• pp.149-154
• /
• 2003

As 21th century advances, internet order system had been developed to maintain convenience along with development of high speed internet networks. To meet the consumer's desire to use the internet food order system in any place and at ant time. we developed wire/wireless internet food order systems that uses the wireless internet terminals (PDA, Pocket PC, etc). This paper presents the design and implementation of the wireless internet food order system.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2003.11b
• /
• pp.774-777
• /
• 2003

사람들은 종종 시를 다투는 업무를 접할 때, 작업할 문서를 집이나 사무실에 두고 오는 실수를 범하는 경우가 있다. 이런 경우를 대비하여 항상 노트북을 준비한다거나, 항상 집에 사람을 대기시켜 놓고 필요할 때마다 심부름을 시킬 수는 없는 노릇이다. 그래서 요즘 노트북에서 PDA, 이동전화기 같은 매체들이 이동 중에도 업무를 할 수 있는 이점 때문에 이 분야에 많은 관심이 증가하고 있고, 사용되어진다. 어떻게 하면 PDA와 같은 제한된 사양에서 우리가 사용하고 있는 PC와 같은 성능을 발휘할 수 있을지, 효과를 극대화 하기 위하여 많은 Solution이 나오고 있는 실정이다. 본 논문에서는 무선 인터넷을 이용하여 선이 있는 고정의 상태가 아닌, 이동중의 상황에서도 통신이 가능한 PDA의 특성을 활용하여 서로 다른 매체인 PC와 PDA를 사용한 상호 통신에 대한 것과, PC의 바탕화면 공유 및 입력장치 제어를 PDA에서 가능하게 하기 위한 방법을 제안한다.

• Proceedings of the KIEE Conference
• /
• 2005.10b
• /
• pp.331-333
• /
• 2005

In this paper, we implemented the monitoring and control of geothermal heating and cooling system using mobile devices. The main idea of this system is to provide the convenience if the system can be controled in remote place with monitoring using the mobile devices like PDA. Basically, the system consists of the Server-Client structure divided into two parts, one is PDA and PC, the other is PC and PLC(Programmable Logic Controller). The PDA, which is equipped with Windows CE as as, monitors the status of the devices (motors and sensors, etc) attached to PLC and controls them. This does the system to be controled by the commands, which we assume to control, with wireless transmission between PC and PLC. The PDA parts are responsible for monitoring and control the devices connected to the PLC, and the PC part which equipped with the application is to provide the relation between PDA and PLC. The Ladder Program is used to control the sequences of the PLC..

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.10 no.11
• /
• pp.3039-3042
• /
• 2009

Home automation system is a demo which is capable of remote monitoring and control on PDA device (which was) programming used by LabVIEW PDA module in embedded system. Every operation program is composed of LabVIEW. And each embedded system is made of self-operating mode without any wiring of PC. This home automation system is controlled by LabVIEW of PDA through Wireless LAN(802.11b).

• The KIPS Transactions:PartD
• /
• v.13D no.1 s.104
• /
• pp.37-50
• /
• 2006

In the focusing on the important of wireless internet, mobile terminal device plays a central role in tracking and coordinating terms in mobile business processing. Especially, mobile device has been considered as a key technology for embedded software and ubiquitous era. Because existing web environments is moving to wireless internet, the new concepts for wireless internet computing environments has gained increasing interest. Mobile agents provide a new abstraction for deploying over the existing infrastructures. Mobile application systems require the flexibility, adaptability, extensibility, and autonomous. New software developments methodology is required to meet the requirements. In this paper, we present an agent architectures model that allows compassable components with pluggable and independable. Our approach involves wrapping components inside a servlet. We have used the model and components to develop the PDA mobile agent.

• Journal of the Korean Society of Radiology
• /
• v.1 no.1
• /
• pp.39-44
• /
• 2007

In this study, wireless measurement technique for human motion was developed to monitor movement disorder patients during their daily life. MICA, TinyOS, and nesC, developed by UC Berkeley, were used as wireless sensor, its software platform, and programming language. The human motion data, generated by two axial accelerometer(ADXL202) was transmitted to PDA(iPaq3630) by 916Mhz short range communication chip(TR1000). It could be stored at PDA by simple Windows CE programming. To test the developed device, it was attached at human chest and the acquired data was shown as a graph during his motion of sitting, standing, and lying. The result showed that human motion could be logged without any hooking and constraints. Therefore, this device can be used to monitor patient's movement disorder and activity of daily life(ADL).

• Proceedings of the IEEK Conference
• /
• 2002.06c
• /
• pp.5-8
• /
• 2002

In this paper, we propose the self-autonomous algorithm for mobile robot system. The proposed mobile robot system controlled by Personal Digital Assistant(PDA) can follow the target at regular intervals. The mobile robot can evaluate the distance between robot and target with ultrasonic sensors, transmits the distance to the PDA. The velocity and direction decided in PDA are transmitted to the mobile robot with wireless LAN communication. Considering the state, velocity-changing and distance-maintenance, of the mobile robot, driving velocity and direction are applied. For safety, the velocity of the mobile robot is changed step by step. As a result, we confirm the ability of following the target with proposed mobile robot.

• The Journal of the Korea Contents Association
• /
• v.5 no.4
• /
• pp.219-226
• /
• 2005

With the rise of interest in sports and introduction of a five-day duty service, it is. increasing the desire for leisure and well-being recently. In this paper, 1 design and implement a baseball broadcasting system for PDAs to offer a sports broadcasting service using wireless network. The implemented baseball broadcasting system is composed of PDA clients, a relay reporter, and a relay server. Users can search and retrieve baseball-related information as well as relay broadcasting information using PDA.

• Proceedings of the KIEE Conference
• /
• 2002.07d
• /
• pp.2364-2367
• /
• 2002

Recently PDA(Personal Digital Assistance) can be purchased at a lower cost than ever before. Therefore, it can be effectively used in various ways such as a personal information management system and wireless mobile internet application. Manufacturers of PDA try to develope various application modules for its extensive utilizations. In this work, a CF typed GPS and data logger module for PDA is designed. It can give us valuable informations about the precise position of measuring site and corresponding sensor values. The proposed CF module can make it possible for PDA to be used as a hand-held measurement device.

• 대한예방의학회:학술대회논문집
• /
• 2004.10a
• /
• pp.49.2-50
• /
• 2004