Publications

Under Review

Di Wu, Jingjie Li, Setareh Behroozi, Younghyun Kim, Joshua San Miguel
ISLPED (International Symposium on Low Power Electronics and Design) 2021

Kyuin Lee, Yucheng Yang, Jack West, Kassem Fawaz, Neil Klingensmith, Suman Banerjee, Younghyun Kim
MobiCom (International Conference on Mobile Computing and Networking) 2021

Yucheng Yang, Kyuin Lee, Youngyun Kim, Kassem Fawaz
WiSec (Conference on Security and Privacy in Wireless and Mobile Networks) 2021

Conference and Journal Papers

Moonshine: An Online Randomness Distiller for Zero-Involvement Authentication
Jack West, Kyuin Lee, Suman Banerjee, Younghyun Kim, George K. Thiruvathukal, Neil Klingensmith
IPSN (International Conference on Information Processing in Sensor Networks), 2021

uGEMM: Unary Computing for GEMM Applications Speical Issue on IEEE Micro Top Picks
Di Wu, Jingjie Li, Ruokai Yin, Hsuan Hsiao, Younghyun Kim, Joshua San Miguel
IEEE Micro, 2021

Kaleido: Real-Time Privacy Control for Eye-Tracking Systems
Jingjie Li, Amrita Roy Chowdhury, Kassem Fawaz, Younghyun Kim
USENIX Security Symposium, Vancouver, B.C., Canada, 2021
[Paper]

Scheduling of Iterative Computing Hardware Units for Accuracy and Energy Efficiency
Setareh Behroozi, Yao Yao, Hoeseok Yang, Younghyun Kim
ISCAS (International Symposium on Circuits and Systems), 2021

MIPAC: Dynamic Input-Aware Accuracy Control for Dynamic Auto-Tuning of Iterative Approximate Computing
Taylor Kemp, Yao Yao, Younghyun Kim
ASP-DAC (Asia South Pacific Design Automation Conference), Tokyo, Japan, 2021

AxFTL: Exploiting Error Tolerance for Extending Lifetime of NAND Flash Storage
Yongwoo Lee, Jaehyun Park, Junhee Ryu, Younghyun Kim
CASES (International Conference on Compilers, Architecture, and Synthesis for Embedded Systems), Virtual, 2020
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2020
[Presentation]

Efficient FEC Scheme for Solar-Powered WSNs Considering Energy and Link-Quality
Gun Wook Gil, Minjae Kang, Younghyun Kim, Ikjune Yoon, Dong Kun Noh
Energies, 2020
[Paper]

Solar-CTP: An Enhanced CTP for Solar-Powered Wireless Sensor Networks
Seok Hyun Cheong, Minjae Kang, Younghyun Kim, Minho Park,  Jinho Park, Dong Kun Noh
IEEE Access, 2020
[Paper]

Energy-Efficient Cluster Management Using a Mobile Charger for Solar-Powered Wireless Sensor Networks
Youngjae Son, Minjae Kang, Younghyun Kim, Ikjune Yoon, Dong Kun Noh
Sensors, 2020
[Paper]

ivPair: Context-Based Fast Intra-Vehicle Device Pairing for Secure Wireless Connectivity
Kyuin Lee, Neil Klingensmith, Dong He, Suman Banerjee, Younghyun Kim
WiSec (Conference on Security and Privacy in Wireless and Mobile Networks), Virtual, 2020
[Paper] [Presentation]

Using Implantable Biosensors and Wearable Scanners to Monitor Dairy Cattle’s Core Body Temperature in Real-Time
Hanwook Chung, Jingjie Li, Younghyun Kim, Jennifer Van Os, Sabrina Brounts, Christopher Choi
Computers and Electronics in Agriculture, 2020

uGEMM: Unary Computing Architecture for GEMM Applications IEEE Micro Top Picks
Di Wu, Jingjie Li, Ruokai Yin, Hsuan Hsiao, Younghyun Kim, Joshua San Miguel
ISCA (International Symposium on Computer Architecture), Virtual, 2020
[Paper]

Approximate Hardware Techniques for Energy-Quality Scaling Across the System
Younghyun Kim, Joshua San Miguel, Setareh Behroozi, Tianen Chen, Kyuin Lee, Yongwoo Lee, Jingjie Li, Di Wu
ICEIC (International Conference on Electronics, Information, and Communication), Barcelona, Spain, 2020

MicPrint: Acoustic Sensor Fingerprinting for Spoof-Resistant Mobile Device Authentication
Yongwoo Lee, Jingjie Li, Younghyun Kim
MobiQuitous (International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services), Houston, TX, 2019
[Paper]

Velody: Nonlinear Vibration Challenge-Response for Resilient User Authentication
Jingjie Li, Kassem Fawaz, Younghyun Kim
CCS (Conference on Computer and Communications Security), London, UK, 2019
[Project page] [Paper] [Presentation] (ACM subscription req.)

VoltKey: Continuous Secret Key Generation based on Power Line Noise for Zero-Involvement Pairing and Authentication
Kyuin Lee,  Neil Klingensmith, Suman Banerjee, Younghyun Kim
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), 2019
UbiComp (International Joint Conference on Pervasive and Ubiquitous Computing), London, UK, 2019
[Paper]

SAADI-EC: A Quality-Configurable Approximate Divider for Energy Efficiency
Jackson Melchert, Setareh Behroozi, Jingjie Li, Younghyun Kim
IEEE Transactions on VLSI Systems, 2019

SECO: A Scalable Accuracy Approximate Exponential Function via Cross-Level Optimization
Di Wu, Tianen Chen, Chien-Fu Chen, Oghenefego Ahia, Joshua San Miguel,  Mikko Lipasti, Younghyun Kim
ISLPED (International Symposium on Low Power Electronics and Design), Lausanne, Switzerland, 2019

Fast Pareto Front Exploration for Design of Reconfigurable Energy Storage
Dawon Park, Younghyun Kim
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2019

A Hypervisor-Based Privacy Agent for Mobile and IoT Systems
Neil Klingensmith, Younghyun Kim, Suman Banerjee
HotMobile (International Workshop on Mobile Computing Systems and Applications), Santa Cruz, CA, 2019
[Paper]

SAADI: A Scalable Accuracy Approximate Divider for Dynamic Energy-Quality Scaling
Setareh Behroozi, Jingjie Li, Jackson Melchert, Younghyun Kim
ASP-DAC (Asia South Pacific Design Automation Conference), Tokyo, Japan, 2019
[Paper]

Continuous and Wireless Skin Contact and Ear Implant Temperature Measurements and Relations to the Core Body Temperature of Heat Stressed Dairy Cows
Hanwook Chung, Jingjie Li, Mario Mondaca, Younghyun Kim, Christopher Y. Choi
ILES (International Livestock Environment Symposium), Omaha, NE, 2018

SyncVibe: Fast and Secure Device Pairing through Physical Vibration on Commodity Smartphones
Kyuin Lee, Vijay Raghunathan, Anand Raghunathan, Younghyun Kim
ICCD (International Conference on Computer Design), Orlando, FL, 2018

A Quality-Configurable Approximate Serial Bus for Energy-Efficient Sensory Data Transfer
Setareh Behroozi, Vijay Raghunathan, Anand Raghunathan, Younghyun Kim
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2018

CamPUF: Physically Unclonable Function based on CMOS Image Sensor Fixed Pattern Noise
Younghyun Kim, Yongwoo Lee
DAC (Design Automation Conference), San Francisco, CA, 2018
[Paper]

AxSerBus: A Quality-Configurable Approximate Serial Bus for Energy-Efficient Sensing
Younghyun Kim, Setareh Behroozi, Vijay Raghunathan, Anand Raghunathan
ISLPED (International Symposium on Low Power Electronics and Design), Taipei, Taiwan, 2017

Design and Management of Battery-Supercapacitor Hybrid Electrical Energy Storage Systems for Regulation Services
Younghyun Kim, Vijay Raghunathan, Anand Raghunathan
IEEE Transactions on Multi-Scale Computing Systems, 2017

TeleProbe: Zero-power Contactless Probing for Implantable Medical Devices Best Paper Finalist
Woo Suk Lee, Younghyun Kim, Vijay Raghunathan
ISLPED (International Symposium on Low Power Electronics and Design), San Francisco, CA, 2016
[Paper]

Energy-Efficient System Design for IoT Devices
Hrishikesh Jayakumar, Arnab Raha, Younghyun Kim, Soubhagya Sutar, Woo Suk Lee, Vijay Raghunathan
ASP-DAC (Asia South Pacific Design Automation Conference), Macau, China, 2016

Vibration-based Secure Side Channel for Medical Devices
Younghyun Kim, Woo Suk Lee, Vijay Raghunathan, Niraj K. Jha, Anand Raghunathan
DAC (Design Automation Conference), San Francisco, CA, 2015
[Paper]

Efficiency-Driven Design Time Optimization of a Hybrid Energy Storage System with Networked Charge Transfer Interconnect
Qing Xie, Younghyun Kim, Donkyu Baek, Yanzhi Wang, Massoud Pedram, Naehyuck Chang
DATE (Design Automation and Test in Europe), Grenoble, France, 2015

Single-Source, Single-Destination Charge Migration in Hybrid Electrical Energy Storage Systems
Yanzhi Wang, Xue Lin, Younghyun Kim, Qing Xie, Massoud Pedram, Naehyuck Chang
IEEE Transactions on VLSI Systems, 2014

Principles and Efficient Implementation of Charge Replacement in Hybrid Electrical Energy Storage Systems
Qing Xie, Younghyun Kim, Yanzhi Wang, Jaemin Kim, Naehyuck Chang, Massoud Pedram
IEEE Transactions on Power Electronics, 2014

Design and Management of Hybrid Electrical Energy Storage Systems for Regulation Services
Younghyun Kim, Anand Raghunathan, Vijay Raghunathan
IGCC (International Green Computing Conference), Dallas, TX, 2014

Powering the Internet of Things
Hrishikesh Jayakumar, Kangwoo Lee, Woo Suk Lee, Arnab Raha, Younghyun Kim, Vijay Raghunathan
ISLPED (International Symposium on Low Power Electronics and Design), La Jolla, CA, 2014
[Paper]

Architecture and Control Algorithms for Combating Partial Shading in Photovoltaic Systems
Yanzhi Wang, Xue Lin, Younghyun Kim, Naehyuck Chang, Massoud Pedram
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2014

A Scalable and Flexible Hybrid Energy Storage System Design and Implementation
Younghyun Kim, Jason Koh, Qing Xie, Yanzhi Wang, Naehyuck Chang, Massoud Pedram
Journal of Power Sources, 2014

Storage-less and Converter-less Maximum Power Point Tracking of Photovoltaic Cells for a Nonvolatile Microprocessor
Cong Wang, Naehyuck Chang, Younghyun Kim, Sangyoung Park, Yongpan Liu, Hyunggyu Lee, Rong Luo, Huazhong Yang
ASP-DAC (Asia South Pacific Design Automation Conference), Singapore, 2014

Computer-Aided Design of Electrical Energy Systems
Younghyun Kim, Donghwa Shin, Massimo Petricca, Sangyoung Park, Massimo Poncino, Naehyuck Chang
ICCAD (International Conference on Computer Aided Design), San Jose, CA, 2013

Designing a Residential Hybrid Electrical Energy Storage System Based on the Energy Buffering Strategy
Di Zhu, Siyu Yue, Yanzhi Wang, Younghyun Kim, Naehyuck Chang, Massoud Pedram
CODES+ISSS (International Conference on Hardware-Software Codesign and System Synthesis), Montreal, Canada, 2013

SIMES: A Simulator for Hybrid Electrical Energy Storage Systems
Siyu Yue, Di Zhu, Yanzhi Wang, Younghyun Kim, Naehyuck Chang, Massoud Pedram
ISLPED (International Symposium on Low Power Electronics and Design), Beijing, China, 2013

Maximum Power Transfer Tracking in a Solar USB Charger for Smartphone
Sangyoung Park, Bumkyu Koh, Yanzhi Wang, Jaemin Kim, Younghyun Kim, Massoud Pedram, Naehyuck Chang
ISLPED (International Symposium on Low Power Electronics and Design), Beijing, China, 2013

Computer-Aided Design and Optimization of Hybrid Energy Storage Systems
Younghyun Kim, Yanzhi Wang, Naehyuck Chang, Massoud Pedram
Foundations and Trends in Electronic Design Automation, 2013

Charge Allocation in Hybrid Electrical Energy Storage Systems
Qing Xie, Yanzhi Wang, Younghyun Kim, Massoud Pedram, Naehyuck Chang
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2013

Dynamic Driver Supply Voltage Scaling for Organic Light Emitting Diode Displays
Donghwa Shin, Younghyun Kim, Massoud Pedram, Naehyuck Chang
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2013

Hybrid Energy Storage Systems and Battery Management for Electric Vehicles
Sangyoung Park, Younghyun Kim, Naehyuck Chang
DAC (Design Automation Conference), Austin, TX, 2013
[Paper]

Power Converter-Aware Design of Electronics Systems
Sangyoung Park, Younghyun Kim, Jaehyun Park, Naehyuck Chang
IPSJ Transactions on System LSI Design Methodology, 2013

Efficient Scheduling Multiple Charge Migration Tasks in Hybrid Electrical Energy Storage Systems
Qing Xie, Di Zhu, Yanzhi Wang, Younghyun Kim, Naehyuck Chang, Massoud Pedram
ASP-DAC (Asia South Pacific Design Automation Conference), Yokohama, Japan, 2013

Dual-Mode Power Regulator for Photovoltaic Module Emulation
Younghyun Kim, Woojoo Lee, Massoud Pedram, Naehyuck Chang
Applied Energy, 2013

Control-Theoretic Cyber Physical System Modeling and Synthesis: A Case Study of an Active DMFC
Donghwa Shin, Jaehyun Park, Younghyun Kim, Jaeam Seo, Naehyuck Chang
ACM Transactions on Embedded Computing Systems, 2012
[Paper]

Battery Management for Grid-connected PV Systems with a Battery
Sangyoung Park, Yanzhi Wang, Younghyun Kim, Naehyuck Chang, Massoud Pedram
ISLPED (International Symposium on Low Power Electronics and Design), Redondo Beach, CA, 2012
[Paper]

Networked Architecture for Hybrid Electrical Energy Storage Systems
Younghyun Kim, Sangyoung Park, Qing Xie, Yanzhi Wang, Naehyuck Chang, Massoud Pedram
DAC (Design Automation Conference), San Francisco, CA, 2012
[Paper]

Constant-Current Regulator-Based Battery-Supercapacitor Hybrid Architecture for High-Rate Pulsed Load Applications
Donghwa Shin, Younghyun Kim, Yanzhi Wang, Naehyuck Chang, Massoud Pedram
Journal of Power Sources, 2012

Enhancing Efficiency and Robustness of a Photovoltaic Power System under Partial Shading
Yanzhi Wang, Xue Lin, Younghyun Kim, Naehyuck Chang, Massoud Pedram
ISQED (International Symposium on Quality Electronic Design), Santa Clara, CA, 2012

Embedded Systems and Software Challenges in Electric Vehicles
Samarjit Chakraborty, Martin Lukasiewycz, Christian Buckl, Suhaib Fahmy, Naehyuck Chang, Sangyoung Park, Younghyun Kim, Patrick Leteinturier, Hans Adlkofer
DATE (Design Automation and Test in Europe), Dresden, Germany, 2012

Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage Systems
Yanzhi Wang, Qing Xie, Massoud Pedram, Younghyun Kim, Naehyuck Chang, Massimo Poncino
DATE (Design Automation and Test in Europe), Dresden, Germany, 2012

Charge Replacement in Hybrid Electrical Energy Storage Systems
Qing Xie, Yanzhi Wang, Younghyun Kim, Donghwa Shin, Naehyuck Chang, Massoud Pedram
ASP-DAC (Asia South Pacific Design Automation Conference), Sydney, Australia, 2012

System-Level Online Power Estimation using an On-Chip Bus Performance Monitoring Unit
Younghyun Kim, Sangyoung Park, Youngjin Cho, Naehyuck Chang
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2011

Balanced Reconfiguration of Storage Banks in a Hybrid Electrical Energy Storage System
Younghyun Kim, Sangyoung Park, Yanzhi Wang, Qing Xie, Naehyuck Chang, Massimo Poncino, Massoud Pedram
ICCAD (International Conference on Computer Aided Design), San Jose, CA, 2011

Charge Allocation for Hybrid Electrical Energy Storage Systems
Qing Xie, Yanzhi Wang, Younghyun Kim, Naehyuck Chang, Massoud Pedram
CODES+ISSS (International Conference on Hardware-Software Codesign and System Synthesis), Taipei, Taiwan, 2011
[Paper]

Charge Migration Efficiency Optimization in Hybrid Electrical Energy Storage (HEES) Systems
Yanzhi Wang, Younghyun Kim, Qing Xie, Naehyuck Chang, Massoud Pedram
ISLPED (International Symposium on Low Power Electronics and Design), Fukuoka, Japan, 2011

Versatile High-Fidelity Photovoltaic Module Emulation System
Woojoo Lee, Younghyun Kim, Yanzhi Wang, Naehyuck Chang, Massoud Pedram, Soohee Han
ISLPED (International Symposium on Low Power Electronics and Design), Fukuoka, Japan, 2011

Bluetooth Wireless Handset for People with Severe Motor Disabilities: Capstone Design Project for Rehabilitation Technology
Younghyun Kim, Jooyeon Lee, Youngshin Koh, Naehyuck Chang
MSE (International Conference on Microelectronic Systems Education), San Diego, CA, 2011

Dynamic Voltage Scaling of OLED Displays
Donghwa Shin, Younghyun Kim, Naehyuck Chang, Massoud Pedram
DAC (Design Automation Conference), San Diego, CA, 2011
[Paper]

Battery-Supercapacitor Hybrid System for High-Rate Pulsed Load Applications
Donghwa Shin, Younghyun Kim, Jaeam Seo, Naehyuck Chang, Yanzhi Wang, Massoud Pedram
DATE (Design Automation and Test in Europe), Grenoble, France, 2011

Maximum Power Transfer Tracking for a Photovoltaic-Supercapacitor Energy System
Younghyun Kim, Naehyuck Chang, Yanzhi Wang, Massoud Pedram
ISLPED (International Symposium on Low Power Electronics and Design), Austin, TX, 2010
[Paper]

Hybrid Electrical Energy Storage Systems
Massoud Pedram, Naehyuck Chang, Younghyun Kim, Yanzhi Wang
ISLPED (International Symposium on Low Power Electronics and Design), Austin, TX, 2010
[Paper]

Dynamic Thermal Management for Networked Embedded Systems under Harsh Ambient Temperature Variation
Sangyoung Park, Jian-Jia Chen, Donghwa Shin, Younghyun Kim, Chia-Lin Yang, Naehyuck Chang
ISLPED (International Symposium on Low Power Electronics and Design), Austin, TX, 2010
[Paper]

System Integration of a Portable Direct Methanol Fuel Cell and a Battery Hybrid
Younghyun Kim, Donghwa Shin, Jueun Seo, Naehyuck Chang, Hyejung Cho, Youngjae Kim, Seongkee Yoon
International Journal of Hydrogen Energy, 2010

Room-Temperature Fuel Cells and Their Integration into Portable and Embedded Systems
Naehyuck Chang, Jueun Seo, Donghwa Shin, Younghyun Kim
ASP-DAC (Asia South Pacific Design Automation Conference), Taipei, Taiwan, 2010

Model Variable Reduction Technique for High-Level Energy Estimation with an Accuracy Constraint IEEE Seoul Chapter Award
Youngjin Cho, Sangyoung Park, Younghyun Kim, Naehyuck Chang
ISOCC (International SoC Design Conference), Busan, Korea, 2009

System-Level Power Estimation Using an On-Chip Bus Performance Monitoring Unit
Youngjin Cho, Younghyun Kim, Sangyoung Park, Naehyuck Chang
ICCAD (International Conference on Computer Aided Design), San Jose, CA, 2008

Extending the Lifetime of Media Recorders Constrained by Battery and Flash Memory Size
Younghyun Kim, Youngjin Cho, Naehyuck Chang, Chaitali Chakrabarti, Nam Ik Cho
ISLPED (International Symposium on Low Power Electronics and Design), Bangalore, India, 2008
[Paper]

Simultaneous Optimization of Battery-Aware Voltage Regulator Scheduling with Dynamic Voltage and Frequency Scaling
Youngjin Cho, Younghyun Kim, Yongsoo Joo, Kyungsoo Lee, Naehyuck Chang
ISLPED (International Symposium on Low Power Electronics and Design), Bangalore, India, 2008
[Paper]

A Fuel-Cell-Battery Hybrid Platform for Portable Embedded Systems
Kyungsoo Lee, Youngjin Cho, Jaehyun Park, Younghyun Kim, Jihun Kim, Naehyuck Chang
IFAC WC (Triennial Event of International Federation of Automatic Control World Congress), Seoul, Korea, 2008

PVS: Passive Voltage Scaling for Wireless Sensor Networks
Youngjin Cho, Younghyun Kim, Naehyuck Chang
ISLPED (International Symposium on Low Power Electronics and Design), Portland, OR, 2007
[Paper]

Capstone Design Project for a Ubiquitous Sensor Network
Naehyuck Chang, Younghyun Kim
MSE (International Conference on Microelectronic Systems Education), San Diego, CA, 2007

Book

Younghyun Kim, Naehyuck Chang
Design and Management of Energy-Efficient Hybrid Electrical Energy Storage Systems, Springer, 2014

Book Chapters

Reconfigurable Photovoltaic Array Systems for Adaptive and Fault-Tolerant Energy Harvesting
Naehyuck Chang, Massoud Pedram, Hyung Gyu Lee, Yanzhi Wang, Younghyun Kim
Nano Devices and Circuit Techniques for Low-Energy Applications and Energy Harvesting (KAIST Research Series), Springer, 2016

Reliability and Security of Implantable and Wearable Medical Devices
Younghyun Kim, Woo Suk Lee, Anand Raghunathan, Vijay Raghunathan, Niraj K. Jha
Implantable Biomedical Microsystems: Design Principles and Applications, William Andrew, 2015

Workshop Presentations

Secure Wireless Implantable and Wearable Medical Device
Younghyun Kim, Woo Suk Lee, Vijay Raghunathan, Niraj K. Jha, Anand Raghunathan
EMBC (International Conference of the Engineering in Medicine and Biology Society), Orlando, FL, 2016

Adaptive Control of Voltage- and Current-Mode Regulators for Photovoltaic Module Emulators
Younghyun Kim, Naehyuck Chang, Massoud Pedram
APMMI (International Workshop on Adaptive Power Management with Machine Intelligence), San Jose, CA, 2011

Posters

Micro- and Nano-Sensors for IoT Security Invited 3rd Place Poster Award
Younghyun Kim
US-Korea Forum on Nanotechnology, 2018

Challenges & Solutions in IoT End-Point Security: A Case for Implantable Medical IoT Invited
Younghyun Kim
US-Korea Forum on Nanotechnology, 2017

Design and Runtime Optimizations of Hybrid Energy Storage Systems
Younghyun Kim
Ph.D. Forum @DAC (Ph.D. Forum at Design Automation Conference), Austin, TX, 2013

Maximum Power Transfer Tracking for a Photovoltaic-Supercapacitor Energy System
Younghyun Kim
SRC @DAC (Student Research Competition at Design Automation Conference), Anaheim, CA, 2010

Patents

Safety-Driven Architecture for Implantable and Wearable Medical Devices
Niraj K. Jha, Younghyun Kim, Vijay Raghunathan, Anand Raghunathan
US Patent, US10722719B2, 2020

Vibration-based Secure Side Channel for Medical Devices
Younghyun Kim, Woo Suk Lee, Vijay Raghunathan, Niraj K. Jha, Anand Raghunathan
US Patent, WO2016133813 A1, 2016

Performance Monitoring Unit and Method of Estimating Power Consumption of a System using the Performance Monitoring Unit
Naehyuck Chang, Youngjin Cho, Younghyun Kim, Sangyoung Park, Jihun Kim
Korean Patent, No. 1010362750000, 2011

Apparatus and Method for Supplying Electric Power using Multiple Power Sources
Naehyuck Chang, Youngjin Cho, Kyungsoo Lee, Jaehyun Park, Younghyun Kim, Sangyoung Park, Jihun Kim, Jueun Seo
Korean Patent, No. 1010362760000, 2011