Thesis

• "Low Energy Biomedical Signal Processor for Wearable Continuous ECG Monitoring System", Ph.D, 2009.8
• "Logarithmic Arithmetic Unit Design for 3D Graphics System" M.S, 2006.8

First Authored Papers

    International Journal Papers

• "ECG Signal Compression and Classification Algorithm with Quad Level Vector for ECG Holter System"
  Hyejung Kim, Refet Firat Yazicioglu, Patrick Merken, Chris Van Hoof and Hoi-Jun Yoo
  IEEE Transactions on Information Technology in Biomedicine (Accepted)
   
• "A 231MHz, 2.18mW 32-bit Logarithmic Arithmetic Unit for Fixed-Point 3D Graphics System"
  Hyejung Kim, Byeong-Gyu Nam, Ju-Ho Sohn, Jeong-Ho Woo and Hoi-Jun Yoo
  IEEE Journal of Solid-State Circuits, Vol.41, No.11, Nov. 2006, pp.2373-2381

    International Conference Papers

• "An Integrated Circuit for Wireless Ambulatory Arrhythmia Monitoring Systems"
  Hyejung Kim, Refet Firat Yazicioglu, Tom Torfs, Patrick Merken, Chris Van Hoof, Hoi-Jun Yoo
  International Conference of IEEE Engineering in Medicine and Biology Society, Sep.2009 (EMBC 2009)
   
• "A Wearable Fabric Computer by Planar-Fashionable Circuit Board Technique" 
  Hyejung Kim, Yongsang Kim, Binhee Kim, and Hoi-Jun Yoo
  IEEE Body Sensor Network 2007 (BSN 2007)
   
• "A Low Energy Sensor Node Controller for Wearable Body Sensor Network System"
  Hyejung Kim, Yongsang Kim, and Hoi-Jun Yoo
  IEEE Asian Solid-State Circuits Conference 2008 (A-SSCC 2008)
   
• "A Low Cost Quadratic Level ECG Compression Algorithm and Its Hardware Optimization for Body Sensor Network System"
  Hyejung Kim, Yongsang Kim, and Hoi-Jun Yoo
  IEEE Engineering in Medicine and Biology Society (EMBC 2008)

• "A 6.3nJ/op Low Energy 160-Bit Modulo-Multiplier for Elliptic Curve Cryptography Processor"
  Hyejung Kim, Yongsang Kim, Hoi-Jun Yoo
  IEEE International Symposium on Circuit and Systems (ISCAS 2008)

• "A 1.12mW Continuous Healthcare Monitor Chip Integrated on a Planar Fashionable Circuit Board"
  Hyejung Kim, Yongsang Kim, Young-Se Kwon, Hoi-Jun Yoo
  IEEE International Solid-State Circuits Conference 2008 (ISSCC 2008)

• "An Embedded 8-bit RISC Controller for Yield Enhancement of the 90-nm PRAM"
  Hyejung Kim, Kyomin Sohn, Jerald Yoo, and Hoi-Jun Yoo
  IEEE Custom Integrated Circuits Conferences 2007 (CICC 2007)

• "A Low Power Compression Processor for Body Sensor Network System"
  Hyejung Kim, Sungdae  Choi, and Hoi-Jun Yoo
  IEEE Body Sensor Network 2007 (BSN 2007)

• "A Low Power 16-bit RISC with Lossless Compression Accelerator for Body Sensor Network System"
  Hyejung Kim, Sungdae Choi, and Hoi-Jun Yoo
  IEEE Asian Solid-State Circuits Conference 2006 (A-SSCC 2006)

• "A 231MHz, 2.18mW 32-bit Logarithmic Arithmetic Unit for Fixed-Point 3D Graphics System"
  Hyejung Kim, Byeong-Gyu Nam, Ju-Ho Sohn, and Hoi-Jun Yoo
  IEEE Asian Solid-State Circuits Conference 2005 (A-SSCC 2005)

    Domestic Journal Papers

• "A Low Power Sensor Node Controller for Human Body Monitoring"
  Hyejung Kim, Sungdae Choi, Jerald Yoo, Seulki Lee, Yongsang Kim and Hoi-Jun Yoo
  Journal of Korean Institute of Next Generation Computing, Vol.2, No.3, Sep.2006. pp.14-20

Non-First Authored Papers

    International Journal Papers

• "A Wearable ECG Acquisition System With Compact Planar-Fashionable Circuit Board-Based Shirt"
  Jerald Yoo, Long Yan, Seulki Lee, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Transactions on Information Technology in Biomedicine 2009 (TITB 2009)
   
• "A 152-mW Mobile Multimedia SoC With Fully Programmable 3-D Graphics and MPEG4/H.264/JPEG"
  Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Transactions on VLSI 2009 (TVLSI 2009)
   
• "A Low-Power Multimedia SoC with Fully Programmable 3D Graphics for Mobile Devices"
  Jeong-Ho Woo, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Computer Grahphics and Applications 2009 (CG & A 2009)
   
• "A 195 mW, 9.1 MVerices/s Fully Programmable 3-D Graphics Processor for Low-Power Mobile Devices"
  Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, and Hoi-Jun Yoo 
  IEEE Journal of Solid-State Circuit 2008 (JSSC 2008) 

• "A 195 mW/152 mW Mobile Multimedia SoC With Fully Programmable 3-D Graphics and MPEG4/H.264/JPEG"
  Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Journal of Solid-State Circuit 2008 (JSSC 2008)  

• "Power and Area-Efficient Unified Computation of Vector and Elementary Functions for Handheld 3D Graphics Systems"
  Byeong-Gyu Nam, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Transactions on Computers (TOC 2008)

• "A Low-Power Unified Arithmetic Unit for Programmable Handheld 3-D Graphics Systems"
  Byeong-Gyu Nam, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Journal of Solid-State Circuit 2007 (JSSC 2007) 

• "A 155-mW 50-Mvertices/s Graphics Processor With Fixed-Point Programmable Vertex Shader for Mobile Applications"
  Ju-Ho Sohn, Jeong-Ho Woo, Min-Wuk Lee, Hye-Jung Kim, Ramchan Woo, and Hoi-Jun Yoo
  IEEE Journal of Solid-State Circuit 2006 (JSSC 2006) 

    International Conference Papers

• "An Attachable ECG Sensor Bandage with Planar-Fashionable Circuit Board"
  Jerald Yoo, Long Yan, Seulki Lee, Hyejung Kim, Binhee Kim, and Hoi-Jun Yoo
  IEEE International Symposium on Wearable Computers 2009 (ISWC 2009)
   
• "A Dynamic Real-time Capacitor Compensated Inductive Coupling Transceiver for Wearable Body Sensor Network"
  Seulki Lee, Jerald Yoo, Hyejung Kim, and Hoi-Jun Yoo
  IEEE Symposium on VLSI Circuits 2009 (VLSI 2009)
   
• "A 5.2mW Self-Configured Wearable Body Sensor Network Controller and a 12¥ìW 54.9% Efficiency Wirelessly Powered Sensor for Continuous Health Monitoring System"
  J.Yoo, L.Yan, S.Lee, Y.Kim, H.Kim, B.Kim, H-J.Yoo
  IEEE International Solid-State Circuits Conference 2009 (ISSCC 2009)

• "A 195mW, 9.1MVertices/s Fully Programmable 3D Graphics Processor for Low Power Mobile Devices"
  Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, Jongchel Jeong, Euljoo Jeong, Suk-Joong Lee, and Hoi-Jun Yoo
  IEEE Asian Solid-State Circuits Conference 2007 (A-SSCC 2007) 

• "A Low Power Multimedia SoC with Fully Programmable 3D Graphics and MPEG4/H.264/JPEG for Mobile Devices"
  Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, Jongcheol Jeong, Euljoo Jeong, Suk Joong Lee, and Hoi-Jun Yoo
  IEEE International Symposium on Low Power Electronics and Design 2007 (ISLPED 2007)

• "A 152mW Mobile Multimedia SoC with Fully Programmable 3D Graphics and MPEG4/H.264/JPEG"
  Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, Hoi-Jun Yoo, et al.
  IEEE Symposium on VLSI Circuits 2007 (VLSI 2007)

• "Processor-Based Built-in Self-Optimizer for 90nm Diode-Switch PRAM"
  Kyomin Sohn, Hyejung Kim, et al.
  IEEE Symposium on VLSI Circuits 2007 (VLSI 2007)

• "Low Energy On-Body Communication for BSN"
  Hoi-Jun Yoo, Seong-Jun Song, Namjun Cho and Hye-Jeong Kim
  IEEE Body Sensor Network 2007 (BSN 2007)

• "A Low-power Star-topology Body Area Network Controller for Periodic Data Monitoring Around and Inside the Human Body"
  Sungdae Choi, Seong-Jun Song, Kyomin Sohn, Hyejung Kim, Jooyoung Kim, Jerald Yoo and Hoi-Jun Yoo
  IEEE International Symposium on Wearable Computers (ISWC 2006) 

• "A 210MHz, 15.3mW Unified Vector and Transcendental Function Unit for Handheld 3-D Graphics Systems"
  Byeong-Gyu Nam, Hyejung Kim and Hoi-Jun Yoo
  IEEE Asian Solid-State Circuits Conference 2006 (A-SSCC 2006) 

• "A 24.2-uW Dual-Mode Human Body Communication Controller for Body Sensor Network"
  Sungdae Choi, Seong-Jun Song, Kyomin Sohn, Hyejung Kim, Jooyoung Kim, Namjun Cho, Jeong-Ho Woo, Jerald Yoo and Hoi-Jun Yoo
  IEEE European Solid-State Circuits Conference 2006 (ESSCIRC 2006) 

• "A Low-Power Unified Arithmetic Unit for Programmable Handheld 3-D Graphics Systems"
  Byeong-Gyu Nam, Hyejung Kim and Hoi-Jun Yoo
  IEEE Custom Integrated Circuits Conferences 2006 (CICC 2006) 

• "A Multi-Nodes Human Body Communication Sensor Network Control Processor"
  Sungdae Choi, Seong-Jun Song, Kyomin Sohn, Hyejung Kim, Jooyoung Kim, Namjun Cho, Jeong-Ho Woo, Jerald Yoo and Hoi-Jun Yoo
  IEEE Custom Integrated Circuits Conferences 2006 (CICC 2006) 

• "A 1.2Mpixels/s/mW 3-D Rendering Processor For Portable Multimedia Application"
  Jeong-Ho Woo, Min-Wuk Lee, Hyejung Kim, Ju-Ho Sohn and Hoi-Jun Yoo
  IEEE Asian Solid-State Circuits Conference 2005 (A-SSCC 2005) 

• "A Fixed-point Multimedia Co-processor with 50Mvertices/s Programmable SIMD Vertex Shader for Mobile Applications"
  Ju-Ho Sohn, Jeong-Ho Woo, Min-wuk Lee, Hye-Jung Kim, Ramchan Woo, and Hoi-Jun Yoo
  IEEE European Solid State  Circuits Conference 2005 (ESSCIRC 2005)  

• "An Autonomous SRAM with On-Chip Sensors in an 80nm Double Stacked Cell Technology"
  Kyomin Sohn, Namjun Cho, Hyejung Kim, Kwanho Kim, Hyun-Sun Mo, Young-Ho Suh, Hyun-Geun Byun and Hoi-Jun Yoo
  IEEE Symposium on VLSI Circuits 2005 (VLSI 2005)   

• "Adaptive Network-on-Chip with Wave-Front Train Serialization Scheme"
  Se-Joong Lee, Kwanho Kim, Hyejung Kim, Namjun Cho, and Hoi-Jun Yoo
  IEEE Symposium on VLSI Circuits 2005 (VLSI 2005)    

• "A Fixed-Point 3D Graphics Library with Energy-Efficient Cache Architecture for Mobile Multimedia Systems"
  Min-wuk Lee, Byeong-Gyu Nam, Ju-Ho Sohn, Namjun Cho, Hyejung Kim, Kwanho Kim, and Hoi-Jun Yoo
  IEEE International Symposium on Circuits and Systems 2005 (ISCAS 2005)  

• "A 50Mvertices/s Graphics Processor with Fixed-Point Programmable Vertex Shader for Mobile Applications"
  Ju-Ho Sohn, Jeong-Ho Woo, Min-Wuk Lee, Hye-Jung Kim, Ramchan Woo and Hoi-Jun Yoo
  IEEE International Solid-State Circuits Conference 2005 (ISSCC 2005)