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朴貴泰,金甲一 明知大學校 産業技術硏究所 2005 産業技術硏究所論文集 Vol.24 No.-
In this paper, we present a wireless watermarking technique for a new character robot. After we insert a sequence of some action codes inaudibly to an audio signal, the character can act the behaviors indicated in those codes by processing sound with a microphone and extracting concealed codes when the pre-processed audio file is played. For example, the robot dances to the music where the action codes were concealed. For this, we propose a modified echo-hiding algorithm. This modified algorithm uses repeated watermarks for robust extraction and integer watermarks for enough data insertion so that it can solve technical problems with the noise generated in the wireless analog channel, attenuation of sound in proportion to distance between a robot and a source of sound, and synchronization. Finally, we verify the performance of the proposed technique through experiments under several conditions.
서재관,이성의,오성남,박귀태,김갑일 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-
Abstract - In this paper, The hardware and software of an Intelligent Traffic Controller has been designed. It consist of several parts-Main CPU module, Field I/O module, Display Module, communication module and Mother Board module. These modules were classified by the functions. This system can be communicated using the Mother Board module. A traffic data is processed by Main CPU module, A data input and output are processed by Field I/O module, User interface is processed by Display module, and Software debugging is processed by communication module and Main CPU module. In this paper, a hardware can be attached and detached easily because It was designed as the module. This system has an advantage that can be used as the common controller. The Overall System consists of several part - loop sensor, loop detector, traffic controller and PC to debug software. Until a few years ago, the sequential program method had been used in Embedded System. But, Because of the complex hardware, the Real Time Operating System is used at the present. In this thesis, OS-9 is ported to the traffic controller. The verification program is designed for testing hardware and software. The verification program consists of several parts - serial communication test, free memory test(DRAM, FLASH, SRAM), Timer test, real time clock, data key read and write test, LED test, Field I/O module test and Front Panel Assembly test. User can verify the hardware and software by calling sub-program.