• Journal of the Korean Institute of Intelligent Systems
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• v.15 no.6
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• pp.714-719
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• 2005

The paper attempts to design and implement the system which can remotely check visitors' speech or Image by a mobile phone. This system is designed to recognize who a visitor is through the automatic calling service, not through a short message, via the mobile phone, even when the home owner is outside. In general, door locks are controlled through the home Server, but it is more effective to control door locks by using DTMF signal from a real-time point of view. The technology suggested in this paper makes it possible to communicate between the visiter and the home owner by making a phone call to tile home owner's mobile phone automatically when the visiter visits the house even if the home owner is outside, and if necessary, it allows for the home owner to control the door lock remotely. Thanks to the system, the home owner is not restricted by time or space for checking the visitor's identification and controlling the door lock. In addition, the security system is improved by changing from the existing password form to the combination of password and speaker verification lot the verification procedure required for controlling the door lock and setting the environment under consideration of any disadvantages which may occur when the mobile Phone is lost. Also, any existing problems such as reconnection to tile network for controlling tile door lock are solved by controlling the door lock in real time by use of DTMF signal while on the phone.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.729-733
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• 2006

Short message service (SMS) is a Popular mobile data service in cellular networks. One SMS message can carry 50 Korean alphabets. Cellular operators standard and develop multimedia message service (MMS) based on P2P as color phones having multimedia solutions such as MIDI, MP3, JPG, PNG, and MPEG have been developed. MMS can be a key cash flow in the non-voice mobile revenue together with SMS. Copyrights protection of contents in a MMS message can be issued as MMS can be the popular P2P service such as MMS. In this paper, we propose MMS DRM system to protect copyrights of contents in MMS with the minimum change of MMS system. The proposed MMS DRM system protect copyrights of contents using DRM Packager, DRM Server, and DRM Agent and support various use cases to activates MMS in mobile networks.

• Journal of the Korea Computer Industry Society
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• v.7 no.5
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• pp.487-494
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• 2006

By development of the superhigh speed network and the Networked appliance, a home network environment was equipped quickly around the cyber apartment. The home network environment provides the abundant family life style which numerous appliance and tools are connected with the network. Recently it is caused by with appearance of the Networked appliance which is connected with the network, the service demand is augmented to hacking, wrong operation, breakdown, crime prevention in home automation, fire, and break-in. This paper planned and proposed the integrated crisis management service model in the environment of home network and Networked appliance. Namely, it classifies the Networked appliance crisis management service and it defines a crisis management message with the XML. The message where the crisis situation occurs is notified and controlled in wireless PDA or the hand phone or the specific authorization.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10c
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• pp.667-669
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• 2003

최근 휴대폰, PDA(Personal Digital Assistants) 등 이동 단말기의 발전으로 개인 정보 관리 위주로만 사용하던 이동 단말기의 역할이 게임, 원격 감시 분야 등 여러 분야로 확대되었다. 원격 감시 분야의 경우, 초기에는 하드웨어의 단순한 유선 연결만을 이용하여 감시 하였다. 원격 감시 기술은 인터넷 등장과 함께 급속도로 발전, 보급되었고 웹으로도 원격 감시를 할 수 있게 되었다. 하지만, 웹을 이용한 방식은 공간과 시간의 제약이 있다. 이러한 문제점을 해결하기 위해 무선 인터넷이 가능한 이동 단말기와 원격 감시 분야를 접목시킴으로써 공간과 시간 제약 없이 원격 감시를 할 수 있게 된다. 이동 단말기에는 원격 감시 소프트웨어가 탑재된다. 소프트웨어를 통해 서버에 접근할 때는 사용자인증을 하여 영상에 대한 보안성을 높였다. 이 때 서버와 이동 단말기 간의 통신은 영상과 제어 메시지를 통하여 수행하게 된다. 본 논문에서는 사용자가 지속적으로 증가하고 있는 이동 단말기인 PDA에 원격 감시 소프트웨어를 탑재하여 가정 또는 공장 등에 있는 서버와 영상, 제어 메시지를 통하여 감시와 제어를 할 수 있는 원격 감시 시스템의 구조를 제안한다.

• Korean Journal of Adult Nursing
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• v.25 no.3
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• pp.241-249
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• 2013

Purpose: The aim of the study was to identify the effects of education from using cellular phones and a short messaging service. Methods: Collected data included baseline demographics, blood pressure, abdominal circumference, total cholesterol, body mass index and health behavior index (Dietary Practice Guidelines Score, Physical Activity, Drinking frequency, Stress score, Subjective health status, and Action change stage score). Data were collected at public health centers in Chungcheongnam-do from January to December, 2011. Data obtained from Individual health counseling Programs in Chungcheongnam-do. Analysis was divided into health risk group and Disease management group, using a paired t test. Results: Following the education of using short messaging service of cellular phones Health risk group was a reduction in the systolic blood pressure, diastolic blood pressure, waist circumference. Disease management group was a reduction in the systolic blood pressure and body mass index. In both groups, there were improvement in the Health behavior index; dietary practice guidelines score, physical activity, stress score, subjective health status and action change stage scores. Conclusion: These results indicated that education using short messaging service of cellular phone for Community was effective in improving health behaviors and status. By applying the results, development of customized teaching messages for stable settlement is required.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.1
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• pp.92-95
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• 2010

A sow has a characteristic changing in its temperature. It is a suitable time that is decreasing after sow's body temperature increased to the highest point. We observe the variation of temperature through USN(Ubiqutous Sensor Network) system using wireless sensor inserted in the womb. The wireless sensor send massage to user's server and its server send SMS massage to user's cell phone. We contribute to user's income increase as it notice to suitable fecundation.

• Journal of the Korea Society of Computer and Information
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• v.17 no.12
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• pp.1-10
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• 2012

In this paper, we propose an patient monitoring system which is suitable for mobile healthcare system. The mobile healthcare system is using portable device such as smartphone and it consists of small computing device. The mobile healthcare system is carry out same performance with desktop computer. We designed medical message structure based on TinyOS to transmit patient's biometric data on the smartphone of medical team, patient and family over the mobile carrier environment, and ported successfully in HBE-Ubi-ZigbeX using NesC. And We confirmed reliable transmission of biometric data on the smartphone by implementing the Android OS based patient information monitoring application to check the status of patient for medical team, patient and family.

• The KIPS Transactions:PartB
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• v.12B no.2 s.98
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• pp.137-142
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• 2005

Since wireless communication cost is relatively expensive, the mobile games using cellular phones or PDAs are mostly played after being downloaded unlike more updated types of phone-to-phone or online games. In particular, the upbringing games, in which garners foster virtual companion animals or vegetables as their avata, have been spotlighted. It is essential to supply variety of items for upbringing avatas. However, due to diverse tastes for avatas and limited storage of mobile terminals, game manias must download their desired items from homepages. In addition, game developers must inform users through SMS messages whenever a new item is created. To do so, they must link WEB server and WAP server to Call Back URL or ARS. This paper proposed a linkage method suitable for JAVA-based mobile phone operating system. The proposed method will consequently increase life cycle of a game and reinforce profitability.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.1188-1193
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• 2009

현대 사회에서 휴대폰은 더 이상 문자 메시지를 송수신하거나 통신을 위한 매개체가 아니라 이동 중에도 인터넷 검색 또는 대용량 데이터를 전송하는 용도로 쓰인다. 특히 통신사에서 제공하는 서비스를 통한 모바일 인터넷 뉴스 기사 검색은 현재 효율성과 주관적 만족도가 떨어진다. 이에 본 연구는 목록 제시 방식이 모바일 브라우징 사용성에 미치는 영향을 보고자 하였다. 따라서 정보 제공의 완전성과 정보 제공의 지연 여부의 2 가지 측면으로 목록 제시 방식을 구분하였다. 탐색 과제를 통한 목록 제시 방식 효과를 비교한 결과 정보 제공이 완전하면서 지연이 없는 레이어드 팝업 조건에서 사용성과 지각된 사용성이 가장 높았으며 정보 제공이 완전하나 정보의 지연이 있는 동적 제시 조건, 정보 제공이 불완전하나 지연이 없는 ‘…’ 조건 순으로 나타났다. 그러나 레이어드 팝업 조건과 동적 제시 조건 간의 유의미한 사용성 차이는 발견되지 않았다. 이 결과는 정보의 지연 여부보다 정보 제공의 완전성이 모바일 브라우징에 더 큰 영향을 준다는 것을 시사한다. 본 연구의 결과는 상이한 디스플레이 방식들 간의 차이만을 살펴보는 수준을 넘어서 현재 적용되고 있는 WAP 서비스의 한계점을 보완하여 사용성을 향상시킬 수 있는 방안을 구축하였음에 의의가 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.650-653
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• 2011

In this paper, we describe Bluetooth system and Bluetooth security. And we analyze the structure of information security and vulnerability, introduced one of Bluetooth hacking techniques. We show a demo of the attack process to inject arbitrary hands-free voice messages and save the file information, recording a conversation through hands-free device.