Tae-Soo Yun

Multi Spatial Interaction Interface in Large-scale Interactive Display Environment

The interactive display is providing various interaction modes to users through various ubiquitous computing technologies. These methods were studied for their interactions, but the limits that it is provided to only single user and the device usability were generated. In this paper, we propose a new type of spatial multi interaction interface that provide the various spatial touch interactive to multi users in the ambient display environment. Therefore, we generate the interaction surface so that a user can interact through the IR-LEDs Array Bar installed in the ceiling of the ambient display environment. At this time, a user can experience the various interactions through the spatial touch in an interaction surface. Consequently, this system offers the interactive display and interface method that the users can interact through natural hand movement without the portable devices.

The development of MPEG-4 based RTSP system for mobile multimedia streaming services

This paper describes the implementation of IOCP based a MPEG-4 RTSP(Real Time Streaming Protocol) system for mobile environment. To prevent the status of cut-off and delay due to a number of contemporary users, we designed and implemented IOCP(I/O Completion Port) based MMS system which supports user access to the internal structure of RTSP through fast and small thread to enhance the performance of RTSP socket connection. This paper provides portability of MPEG-4 FGS coding scheme into mobile environment such CDMA based internet.