• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.213-214
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• 2016

본 논문에서는 모바일환경을 활용하여 인터넷 접근이 어렵고 인터넷 사용이 불편한 사용자를 중심으로 개발한 일상생활에서의 냉장고 정리, 쾌척 등과 같이 냉장고 사용의 편리성을 위하여 안드로이드 5.1 버전의 스마트폰 Application으로 개발하였다. 이를 해결할 시스템을 구현하기 위해 GCM(Google Cloud Messaging) Server를 활용하였고, 서버에서 특정 시간이 도래되어 클라이언트로 메시지를 전송하면 사용자의 안드로이드 폰으로 푸시 메시지(Push Message)가 수신되는 방식으로 구현하였다. 안드로이드 환경을 기준으로 실행하기 위해 APACHE CORDOVA를 기반으로 CORDOVA PLUGIN에 있는 Camera 기능을 사용하였고 사용자 안드로이드에 있는 사진을 업로드하거나 즉석에서 사진을 촬영하여 앱에 올릴 수 있는 기능을 사용자 편의성을 고려하여 개선하였다. 사용자의 편리성, 가독성 등을 고려하여 개발함으로써 사용자는 활용성이 높은 사용자 인터페이스를 통해 냉장고를 정리하고 관리할 수 있을 것으로 기대하고 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.3
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• pp.561-566
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• 2013

In this paper, android phone information push system based on the XMPP protocol is proposed. For this, we implement a XMPP(eXtensible Message and Presence Protocol) based instant message system in C/S network environment by using Java language and eclipse device. This system not only allows sending and receiving messages from the PC server to mobile phone client, but also enables the expansion into the smack package of an android phone. Thus, this system shown, in this paper has the better performance in transmission and transfer speed than those of the basic XMPP protocol system.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.427-432
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• 2015

Recently, Mobile Social Network Game market has grown rapidly because Smart devices has been spreading to many people and improving performance. Push notification, which is a success factor of the mobile social network game brought about stress to the user. However, there is no study on push notifications in the mobile social network game; it was difficult to understand for the use of push notifications. The Games of Kakao talk platform has various push notification system and provides detailed descriptions. On the other hand, the game linked to Facebook has minimal push notification system. In the future, if game companies develop push notification system by the characteristics of user, mobile social network games be able to derive the user's use continuously.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.2
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• pp.445-466
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• 2022

As everything linking to the internet, people can subscribe to various services from a service provider to facilitate their lives through the Internet of Things (IoT). An obligatory thing for the service provider is that they should push the service data safely and timely to multiple IoT terminal devices regularly after the IoT devices accomplishing the service subscription. In order to control the service message received by the legal devices as while as keep the confidentiality of the data, the public key encryption algorithm is utilized. While the existing public encryption algorithms for push service are too complicated for IoT devices, and almost of the current subscription schemes based on push mode are relying on centralized organization which may suffer from centralized entity corruption or single point of failure. To address these issues, we design a secure subscription-push service scheme based on blockchain and edge computing in this article, which is decentralized with secure architecture for the subscription and push of service. Furthermore, inspired by broadcast encryption and multicast encryption, a new encryption algorithm is designed to manage the permissions of IoT devices together with smart contract, and to protect the confidentiality of push messages, which is suitable for IoT devices. The edge computing nodes, in the new system architecture, maintain the blockchain to ensure the impartiality and traceability of service subscriptions and push messages, meanwhile undertake some calculations for IoT devices with limited computing power. The legalities of subscription services are guaranteed by verifying subscription tags on the smart contract. Lastly, the analysis indicates that the scheme is reliable, and the proposed encryption algorithm is safe and efficient.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.6
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• pp.778-783
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• 2018

With the rapid advancement of information and communication technology and industrial technologies, a hyper-connected society is being realized to connect human beings, all programs and things via the Internet. IoT (Internet of Thing), which connects a thing and another thing, and things and human beings, gathers information to realize the hyper-connected society. MQTT (Message Queuing Telemetry Transport) is a push-technology-based light message transmission protocol that was developed to be optimized to the limited communication environment such as IoT. In pursuing the hyper-connected society, IoT's sensor environment information is now being used as a wide range of information on people's diseases and health management. Thus, security problems of such MQTT include not only the leak of environmental information but also the personal information infringement. To resolve such MQTT security problems, we have designed a new security MQTT communication by applying the initial-value sensitivity and pseudorandomness of the chaotic system to the integrity and confidentiality. The encryption method using our proposed chaotic system offers a simple structure and a small amount of calculation, and it is deemed to be suitable to the limited communication environment such as IoT.

• The Journal of the Korea Contents Association
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• v.11 no.8
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• pp.112-122
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• 2011

In this paper, we adopt a concept of UCM(User Created Market) to develop STOWAR system which is user can use their smart phone at anytime, anywhere to directly forming a market at virtual space and other's also can access to this market trade with other users. This system is optimized for effectiveness of information alert and ease way to access information by selective event notification feature which can expected with activation of service.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1130-1131
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• 2011

본문에서는 Pull/Push 서비스를 사용하여 스마트폰 기반의 OAM(Operation, Administration & Maintenance) 시스템에서 보다 빠르고 효율적인 메시지 전달 방법을 제안한다. OAM은 네트워크의 운영, 관리, 결함 표시, 성능 정보, 데이터와 진단기능을 제공하는 네트워크 관리 시스템이다. 최근 스마트폰의 사용이 활성화 되고 있고 이를 효율적 업무 환경 구축을 위해 활용하고자 하는 사회적 요구가 많이 늘어나고 있다. 현재 사용중인 OAM 시스템을 조사하고 기존의 Pull기술과 Push기술을 분석한 후 스마트폰 기반의 OAM 시스템을 위한 모델을 제시한다.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.487-490
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• 1998

In this paper, we describe a method for two-way communication service for smart phone integrated with pager which receive various kinds of Internet service information and pushes this information into smart phone to make it available for Internet assess. In this method, the server can push the status data of message boxes into the smart phone and it makes connection to the server automatically. The proposed method will make it possible to manage and excange the information and resources in an efficient manner during idle time, and will provide the potential capabilities of developing a variety of new Internet services for the system.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2002.11a
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• pp.457-465
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• 2002

휴대폰 사용 인구가 폭발적으로 늘어나 대다수 사람을 네트워크화 할 수 있는 기반 환경이 조성되었다. 이에 따라 모바일 단말을 통한 여러 응용 서비스가 가능해 졌다. 따라서 본 논문에서는 휴대폰의 SMS(Short Message Service) 기능을 이용한 Callback URL을 적용하여 구축한 예약 확인 시스템을 통해 예약이 필요한 기업 및 기관에서 예약 손실을 줄이고 예약 데이터를 이용하여 eCRM과 연계, 고객 특성을 관리하고 마케팅 활동에 활용할 수 있는 방안을 다루고자 한다.

• Journal of Advanced Navigation Technology
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• v.18 no.6
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• pp.588-593
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• 2014

Recently, the smart devices has been possessed by a large majority of the adult, and offered various personalization services. This paper proposed the lightweight Intelligent Image Security System that notice the existence of any intruder in real time at the place of requiring the security by using smart device. The proposed image security system recognized whether or not intruder exists using the difference frame on the basis of Integral Image and the dynamic background updating algorithms. The intrusion notification is achieved by using the GCM push server that send massages in the application unit of user mobile device, and the SMTP mail server which is use of e-mail standard protocol. In case of the occurrence of intruder, GCM push server send an push-massage by the private mobile device, and SMTP mail server send the intruder's photograph and intrusion time. By the convergence of the various image processing algorithms and the performance of smart device, The proposed image security system can be applied to the various Intelligent Image Security field.