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Dive into the research topics where Ji-hun Koo is active.

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Featured researches published by Ji-hun Koo.


embedded and ubiquitous computing | 2006

A multi-protocol baseband modem processor for a mobile RFID reader

Seok Joong Hwang; Joon Goo Lee; Seon Wook Kim; Sunshin Ahn; Si Gyung Koo; Ji-hun Koo; Kyung Ho Park; Woo Shik Kang

In RFID (Radio Frequency IDentification) systems, a tag reader communicates with tags, reads their identification codes, and accesses their related database through network infrastructure. There are many research activities in RFID systems for industrial applications such as delivery, manufacturing, and so on, but there is few on mobile devices such as cellular phones and PDAs. This paper presents architecutre of a multi-protocol RFID reader on mobile devices. We have considered several design parameters, such as low power consumption, cost effectiveness and flexibility. We prototyped our system on the ARM-based Excalibur FPGA with iPAQ PDA, and also a chip with 0.18um technology for verification of our architecture


Archive | 2006

Wireless terminal and RFID system for providing additional information and a method for providing additional information using wireless terminal and RFID system

Kyung-ho Park; Woo-Shik Kang; Jin-young Yang; Si-gyoung Koo; Hyung-min Yoon; Ji-hun Koo


Archive | 2006

RFID tag and RFID reader for anti-collision and operating method thereof

Hyung-min Yoon; Woo-Shik Kang; Si-gyoung Koo; Ji-hun Koo; Kyung-ho Park


Archive | 2006

Identification anti-collision method and radio frequency identification system using the same

Jin-young Yang; Sunshin An; Woo-Shik Kang; Ji-hun Koo; Young-Hwan Jung


Archive | 2006

Mobile device having RFID system

Yongjin Kim; Young-eil Kim; Seong-soo Lee; Hyung-min Yoon; Ick-jae Yoon; Ji-hun Koo


Archive | 2008

RFID READER COMPENSATING LEAKAGE SIGNAL AND COMPENSATING METHOD THEREOF

Ji-hun Koo; Il-Jong Song; Si-gyoung Koo; Young-hoon Min; Kuang-woo Nam; Yuri Tikhov; In-Hyuk Kim


Archive | 2006

Method and apparatus for detecting end of response signal on radio frequency identification tag

Ji-hun Koo; Woo-Shik Kang; Jin-young Yang; Seon Wook Kim; Seokjoong Hwang


Archive | 2006

Antenna applied to slide type mobile communication terminal

Yong-jin Hyojachon Hwaseong Apt. Kim; Do-hoon Gyeonghyang Park Kwon; Young-eil Kim; Ji-hun Koo; Ick-jae Yoon


Journal of Embedded Computing | 2009

A low-power baseband modem architecture for a mobile RFID reader

Seok Joong Hwang; Joon Goo Lee; Seon Wook Kim; Ji-hun Koo; Woo Shik Kang


Archive | 2008

Rfid communication method and apparatus

Ji-hun Koo; Young-hoon Min; Si-gyoung Koo; Il-Jong Song; Myunggun Kim; Kuang-woo Nam

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Si-gyoung Koo

Samsung Electro-Mechanics

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