About
- about me
- Experience Summary
- Work Experience
- Skill Summary
- contact me
- About this site
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about me
Experience Summary
Embedded Software Developing :
- Camera, USB, LCD, Serial I/O, irDA stack, I2C, SPI, UART, GPIO
- Bluetooth Profile, JPEG, MPEG4, Flash Device (NOR, NAND, eMMC )
- Linux Device Driver( eMMC, DDR ), IDA pro, Windbg, SoftICE
Statistics and SW Quality & Reliability, Machine Learning:
- Statistics : Six Sigma Master Black Belt, ANOVA, DOE,Linear/Multiple Regression
- Analysis : multivariate analysis, FMEA, SPC, clustering Analysis
- Monte-Carlo Simulation, , Factor analysis, Decision Tree Analysis
- Reliability : MTBF , Weibull Distribution Application, Estimation of Device Life.
- Process: GE 10 Step Reliability for Design, DMAIC/DIDOV
- Tools : Minitab, Apache Spark
- Deep Learning : LeRu, CNN, RNN, LSTM with TensorFlow
Project Leader/Manager:
- Function Leader : Bluetooth
- Project Leader: Mobile Phone( Racetac, PCC, Verizon Wireless )
- Manager : Validation of Quality, and Improvement of Field Defect
Programming Language and Developing Environment:
- C/C++, Java, Python, MSSQL, MongogDB, QT, Assembly(MASM) On Windows, Linux, RTOS, Docker
Work Experience
Mar 2004–present LG Electronics Seoul, Korea
Position Title : Software Project Leader/Manager
Role1 : As Project Leader, manager the Risk of schedule and requirement.
Project Leader : North American area (Verizon Wireless Phone, VX9800, VX9900).
- Adjust between the Client Requirement and the level of LG Implementation
- Coordinate functions to members
- Meet the delivery schedule.
- Meet the Requirement of manufactory.
- Meet the Client Requirement
- Meet the Quality Requirement
- Risk Management of schedule and functions of product.
Role2: Validation of Quality, Improvement of Linux Kernel Driver and Field Defect For Android Smart Phone.
- Improvement: LPDDR Kernel Device Driver for Android Phone
- Improvement: eMMC Kernel Device Driver for Android Phone + FTL layer Test
- Wear Leveling, Bad Block Management, Garbage Collection,
- Power Off Recovery, Mapping Algorithm
- Android UI Test Automation using ATS which is similar to Android UI Automator and using Object detection
- Validation of Quality : test of Mass production
- Six Sigma process management (as a Master Black Belt )
- ANOVA, Linear/Multiple Regression Analysis, multivariate analysis
- multivariate analysis, FMEA, Gauge R&R, 5-Why, SPC
- Improvement of Quality Process.
- Documentation of Quality Process.
- OEM Audit : Arima ( from Taiwan )
- Improvement of Field Defect
- Visit the Service Center
- Gather the data of Service Data.
- Analyzing the data using Statistical tools ( minitab )
- Reproduce the defect
- Make the solution of defect
- Apply the solution to the product
- monitoring the trend of FFR ( Field Fail Rate )
June 2002–Dec 2003 Motorola Korea, Seoul
Position Title : Embedded Software Engineer & Function Leader
Role : Writing Device Driver for Mobile Phone and Function Leader of Bluetooth Profile Which was based on REX ( Qualcomm Real time OS )
- Wrote Device Driver : LCD, NOR Flash Memory, Power management
- Project involved : RaceTac, T720,
- Tele-Communication with Bluetooth Head Quarter Team.
- Function Leader : Bluetooth stack(Headset, Hands-free, DUN )
- function re-arrange to member
- manager the D-day schedule.
- Compatibility Test of Bluetooth.
April 2000–June 2002 Synertek Korea inc. (startup company) Seoul, Korea
Position Title : Embedded Software Engineer
Role : Writing device driver for PDA-supporting Chip Design.
- Wrote device driver : USB image, USB Storage, Camera H/W Design.
- Porting Protocol : IrDa Stack, TCP/UDP/IP
- Analysis for algorithm : JPEG, MPEG4.
- Guide a H/W design Structure : JPEG, MPEG4
Feb 1990–Mar 2000 , SAMSUNG, Semi-conductor Business Division GiHeuong, Korea
Position Title : Embedded Software Engineer
Role : Writing Display device driver with Graphic Semi-conductor Chip Design Team
- Analyze a 2D graphic algorithm in Windows
- Guide a H/W design Structure for Graphic Chip
- Wrote the 2D, 3D Display Device Driver for the Windows supporting Hardware Graphic chipset KS82C604, KS82C605, KS82C615, and wrote the WDM driver with DirectX
- Wrote the Video Bios for graphic Chip
- Support all of windows products.
- Design and Wrote the UI for the Open MRI ( Magnetic Resonance Image).
- Wrote the Image processing S/W module for Open MRI.
Skill Summary
Computer Language & Library
- C(over 10 year), C++(5years), C#(3years) , MS Visual C++ & MFC (7years), eclipse(2year)
- ARM assembler(4years) , X86 MASM Assembler( 7years), Java(3year)
- OpenGL programming(1year),WDM, DirectX ( DirectShow, 3years )
- Visual Basic / Visual Basic For Application
- Python with numpy, scipy
- MySQL, MongoDB, Docker
- MATLAB, Qt
OS(+ embedded ), CPU
- REX(Qualcomm Realteam OS, 5year), RTXC ( Realtime OS, 2years), pSOS( Samsung, 1year )
- Linux(5year), Windows 98, NT, 2000, XP
- Android Platform
- Intel 8086, 80386, pentium
- ARM ( ARM7TDMI, ARM926 )
Tools and Equipment
- ClearCase ( Software version management tool), git
- WinDbg, SoftICE, TRACE32 + JTAG
- Logic Analyzer( HP )
- IDA pro, Windbg, SoftICE
Certificate
- Six Sigma Master Black Belt, NVidia Deep Learning Institude, ISTQB
Area of interest
- Machine Learning & Deep Learning
- SVM ( support vector machine )
- Open platform : caffe, tensorflow
- OpenCV ( Computer Vision )
- Object Segmentation and Detection, Object Classification using SVM
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