• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2015.07a
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• pp.96-97
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• 2015

본 논문에서는 MLT 멀티미디어 프레임워크를 이용하여 홍보동영상을 자동 합성하는 웹 기반 서비스 프레임워크 상에서의 연동 인터페이스를 개발한다. 소상공인 홍보영상 제작시스템은 일반 소상공인들의 업종 정보와 잠재고객 특성정보를 기반으로 사진이나 동영상을 입력하면 관련된 홍보동영상을 자동으로 출력하는 시스템이다. 인지도가 높고 기능이 다양한 상용 소프트웨어들이 다수 존재하지만 소상공인들이 쉽고 저렴하게 사용할 수 있는 시스템 구성을 위해 본 논문에서는 공개소스 프로젝트인 MLT 멀티미디어 프레임워크를 사용한다. LGPL에 따라 개발 중인 MLT는 멀티미디어 콘텐츠들을 쉽게 조합하고 표시하는 필수 기능들을 제공하며 플러그인 구조를 채용하여 신규기능 탑재 및 효과추가도 가능하다. 하지만 MLT는 영상생성에 필요한 저수준 기능들을 주로 제공하므로 상위 계층에서 입력된 정보를 반영하여 홍보영상을 만드는 시스템 구성을 위해서는 상위 모듈들과의 연동 인터페이스의 설계 및 구현이 필요하다. 따라서 본 논문에서는 홍보전략 및 홍보의도와 같은 상위수준의 정보를 고려하여 MLT로 동영상을 실제 합성할 수 있도록 하는 계층화된 연동 구조를 제안한다.

• The KIPS Transactions:PartA
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• v.10A no.6
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• pp.605-614
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• 2003

In this paper we introduce a new style multiparadigm language named Argos which applies a compositional approach [20] to multiparadigm programming. Argos is a superset of the Java, and its grammar has an extension point which allows other languages to be used in Argos programs. Therefore, Argos can support object-oriented programming and multiparadigm programming by enabling each method in a class to be implemented with one of the Java, C, Prolog, Python, and XML languages. Since Argos allows the existing languages to be used, it has advantages such as easiness of learning and high reusability. The Argos compiler is implemented according to the delegating compiler object (DCO) model[28,29]. The compiler partitions a program Into several parts according to the languages used in methods and delivers the parts the languages' processors which compile the parts.

• Journal of Korea Multimedia Society
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• v.23 no.7
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• pp.870-882
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• 2020

It is that failure of equipment at the factory site causes personal injury and property damage. We are required a real-time monitoring and risk forecasting techniques to prevent for equipment failure. In this paper, we proposed a 3-phase smart plug and real-time monitoring system that can be used in factories, and collected environmental information and power information using a smart plug to analyze the data. In order to analyze the correlation between the risk situation and the collected data, we predicted the risk situation using Linear Regression, SVM, and ANN algorithms. As a result, the SVM and ANN algorithms obtained high predictive accuracy and developed a mobile app that could use it to check the risk forecast results.

• Journal of Korea Multimedia Society
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• v.14 no.1
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• pp.15-23
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• 2011

In this paper, we propose a keyboard security method that is based on a subclassing. This method doesn't need an additional hardware and can be applied to Web browsers that do not support ActiveX controls. As the users of Web browsers such as Firefox, Safari, Chrome etc. are increased, it is more required to have the keyboard security methods that are based on software and don't use ActiveX controls. Thus we developed the user mode keyboard security method that is based on a subclassing with plugins. Our method doesn't need an additional hardware module and is interoperable with general kernel mode security programs.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.1
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• pp.69-80
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• 2019

This paper proposes a multimodal sensor platform which supports plug and play (PnP) technology. PnP technology automatically recognizes a connected sensor module and an application program easily controls a sensor. To verify a multimodal platform for PnP technology, we build up a firmware and have the experiment on a sensor system. When a sensor module is connected to the platform, a firmware recognizes the sensor module and reads sensor data. As a result, it provides PnP technology to simply plug sensors without any software configuration. Measured sensor raw data suffer from various distortions such as gain, offset, and non-linearity errors. Therefore, we introduce a polynomial calculation to compensate for sensor distortions. To find the optimal coefficients for sensor calibration, we apply a genetic algorithm which reduces the calibration time. It achieves reasonable performance using only a few data points with reducing 97% error in the worst case. The platform supports various protocols for multimodal sensors, i.e., UART, I2C, I2S, SPI, and GPIO.

• Journal of KIISE:Software and Applications
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• v.29 no.7
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• pp.436-449
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• 2002

This paper describes on our experience of developing the Database Connector as an interconnection method between multimedia database, and the streaming framework. It is possible to support diverse and mature multimedia database services such as retrieval and join operation during the streaming if an interconnection method is provided in between streaming system and multimedia databases. The currently available interconnection schemes, however have mainly used the file systems or the relational databases that are Implemented with separated form of meta data, which deafs with information of multimedia contents, and streaming data which deals with multimedia data itself. Consequently, existing interconnection mechanisms could not come up with many virtues of multimedia database services during the streaming operation. In order to resolve these drawbacks, we propose a novel scheme for an interconnection between streaming framework and multimedia database, called the Inter-Process Communication (IPC) based Database connector, under the assumption that two systems are located in a same host. We define four transaction primitives; Read, Write, Find, Play, as well as define the interface for transactions that are implemented based on the plug-in, which in consequence can extend to other multimedia databases that will come for some later years. Our simulation study show that performance of the proposed IPC based interconnection scheme is not much far behind compared with that of file systems.

• Proceedings of the Korean Society of Computer Information Conference
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• 2009.01a
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• pp.101-105
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• 2009

현재 Powerpoint는 팀 프로젝트에도 불구하고 PPT파일을 혼자서 만들고 수정해야 하면서 한 사람이 많은 시간을 소비해야한다. 또는 여러 명이서 각각의 페이지를 따로 만들고 한 사람이 각자가 만든 페이지를 받아 하나의 파일로 합쳐야하는데 이 방법은 비효율성과 불편함이 존재한다. 따라서 하나의 PPT파일을 여러 명이서 동시에 접속하여 각자의 페이지를 만들면서 시간도 절약하고 불편함과 비효율성을 제거하기 위하여 이 프로그램을 제안하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.787-790
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• 2008

본 논문에서 활용하고자 하는 UPnP 미들웨어는 일반적인 플러그 앤 플레이(plug-and-play)개념을 네트워킹에 확장한 것으로 네트워크상에서 동작하는 장비를 서로 연결하기 위해서 표준 인터넷프로토콜에 근거한 네트워크 구조이다. UPnP 기능을 가진 디바이스는 일반적인 TCP/IP상에서 동작하므로 물리적인 연결방법이나 운영체제, 하드웨어 플랫폼 등에 영향을 받지 않으며, 홈 네트워크나 작은 사무실 공간, 공공 장소 등 네트워크 연결 가능한 모든 장소에 적용될 수 있다. 따라서 본 논문에서는 다양한 멀티미디어 서비스를 제공하는 UPnP 디바이스를 임베디드 기반으로 설계하고 또한 사용자의 인지 없이 최적의 서비스를 제공할 수 있는 지능형 정보가전 모델을 제안한다.

• Journal of Korea Multimedia Society
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• v.14 no.7
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• pp.905-916
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• 2011

Recently, the W3C has developed the HTML 5 standard to provide various multimedia services as well as a web based streaming. HTML5 based web browsers with the built-in video codecs can be used directly for streaming services, though previous web browsers should contain playback plug-in for streaming services. In addition, an adaptive streaming technology using HTTP/TCP has been standardized, since an Internet firewall does not support RTP/UDP streaming protocol but HTTP/TCP streaming protocol. In this paper, we propose the service migration mechanism among various devices in the HTML5-based adaptive HTTP streaming environments. The proposed algorithm and architecture were modeled for migrating media flows, media flow control, and session control and implemented using JavaScript. Finally, we showed that the proposed mechanism was effective to migrate HTTP streaming service among various devices by performing several experiments.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.20 no.2
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• pp.145-156
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• 2010

Now a days, the development of TV and internet like communicational technique makes IPTV service which combines internet with multimedia contents increase. But when a user gets service in specific place, the certification process and user's ID check in IPTV service is complicate so that there occurs communicational difficulty like increasing illegal users and service delay etc. This paper proposes communication security mechanism to prevent Clone attack which happens in wireless section by efficiently extracting illegal user. The proposed mechanism performs key distribution procedure, inter certification procedure, and key initiation procedure by putting security agent in RFID-USB for RFID tags users use to perform plug-and-plug function. Also, the proposed mechanism updates the hased token value by its ID and the random number which RFID-USB creates whenever a user accesses in the area of RFID-USB so that it protects reply attack and man-in-the-middle attack which happen often in the area of wireless section.