Yung-Cheol Byun

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There have been an increasing interest for wireless sensor networks as a new technology to realize the ubiquitous computing, and demands for internetworking technology between the wireless sensor networks and the Internet which is based on IP address. For this purpose, this paper proposes the internetworking scheme which allocating IP addresses to sensor(More)
In this paper, we present an augmented reality learning system that enables users to experience an interactive flower garden with the assistance of interactive agents in the augmented picture. We develop an interactive agent that generates problem-solving peer support to a user's action. We overlay virtual flower garden over a physical book and offer a(More)
There has been an increasing interest in wireless sensor networks as a new technology to realize ubiquitous computing, and demands for internetworking technology between the wireless sensor networks and the Internet which is based on IP address. For this purpose, this paper proposes and implements the internetworking scheme which assigns IP addresses to the(More)
Currently climate change is one of the major problems encountered due to the climatic controls interacting in various intensities and in different combinations. The proposed system includes mechanism that accepts/processes gathered data from Agricultural Research Center. The system uses Time Series Analysis; the collection of observations of well-defined(More)
This paper presents design and implementation of a homecare system that provides home control assistance and fall detection services using a wrist-watch type wireless motion and location sensing device. This user interface device is equipped with a Zigbee radio transceiver to communicate with a home gateway and track location of the user. The user interface(More)
Multiple-Input Multiple-Output (MIMO) spatial multiplexing is a promising technique to increase the channel capacity without increasing bandwidth. One of the key to successful application of this technique is in receiver design. Recently, a low complexity receiver algorithm, based on asymmetrical poly-diagonalization and trellis decoding, is investigated.(More)
The mobile Augmented Reality technology is one of the optimization technologies in the smart phone. In this project, we combine AR with tourism to develop tourism information system. The system can provide various kinds of information for restaurant, tourism places, regional contents, Olle trails, and historic sites in Jeju Island.
This paper is directed towards the development of an improved DES to secure the data using smart cards. An improved Data Encryption Standard has been developed by incorporating an ODD/EVEN bit conversion to the existing DES algorithm. The proposed algorithm is expected to provide greater security to further protect the data in Smart Cards. The data is(More)