portfolio sungho yoo

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Sungho Yoo’s Portfolio

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Page 1: Portfolio Sungho Yoo

Sungho Yoo’s Portfolio

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Page 2: Portfolio Sungho Yoo

SUNGHO YOO Portfolio

Email: [email protected] Cell Phone: +82-10-9144-4895

Page 3: Portfolio Sungho Yoo

Company Hyundai Electronics Inc. Customer SK Telecomm Responsibility Channel Card Software Development Working Site Korea Project Period 2001

1xCDMA Macro System

Page 4: Portfolio Sungho Yoo

1xCDMA Macro System

CSM Modem driver

Trouble shooting and bug fixing CDMA protocol flow control S/W maintenance IS95B feature implementation

( Cell Broadcasting Service, Voice Privacy, Etc.) Language: C. OS: Real time OS( Qualcomm’s REX )

CSM Modem H/W

SK Telecomm’s Base Tranceiver Station

SK Telecomm’s Base Station Control

L1,L2 Layer

Flow Control S/W

L3 Layer

Physical layer

E1/T1 Air Link

Mobile Phone

Application Layer

L2 Layer

L1 Layer

Page 5: Portfolio Sungho Yoo

Company Hyundai Electronics Inc. Customer KTF Responsibility Modem Card Software Development Working Site Korea Project Period 2002

1xEV-DO Macro System

Page 6: Portfolio Sungho Yoo

1xEV-DO Macro System

CSM Modem driver

1xEV-DO modem (CSM5500) chip driver S/W Porting 1xEV-DO Physical, Mac Layer protocol stack S/W porting Distributed System base 1xEV-DO protocol flow control application

development Language: C++. OS: Real time OS (Windriver Vxworks )

CSM Modem H/W

Base Tranceiver Station

Mac Layer

Flow Control S/W

Security Layer

Connection Layer

Session Layer

Steam Layer

Application Layer

Physical layer

ATM Air Link

Mobile Phone Base Station Control

Page 7: Portfolio Sungho Yoo

Company Hyundai Electronics Inc. Customer KTF Responsibility Modem Card Software Development Working Site Korea Project Period 2003~2004

1xEV-DO Micro System

Page 8: Portfolio Sungho Yoo

1xEV-DO Micro System

CSM Modem driver

1xEV-DO modem (CSM5500) chip driver S/W Porting 1xEV-DO Physical, Mac Layer protocol stack S/W porting Distributed System base 1xEV-DO protocol flow control application

development Language: C++. OS: Real time OS (Windriver’s Vxworks)

CSM Modem H/W

Base Tranceiver Station

Mac Layer

Flow Control S/W

Security Layer

Connection Layer

Session Layer

Steam Layer

Application Layer

Physical layer

TCP/IP Air Link

Mobile Phone Base Station Control

Page 9: Portfolio Sungho Yoo

Company UTStarcom Korea Customer Verizon Wireless Responsibility Call User Interface S/W Development Working Site Korea, New York in USA Project Period 2005~2006

Verizon Wireless mobile phone (CDM-7025)

Page 10: Portfolio Sungho Yoo

Verizon Wireless mobile phone (CDM-7025)

Qualcomm CDMA Protocol Stack

Qualcomm’s Protocol API

UTStarcom’s UI Framework

Phone Book App Call UI App SMS App Etc. Apps

Modem Driver H/W Drivers REX OS DB

Verizon Wireless UI requirement base voice and data Call UI implementation.

CDG2 (CDMA Development Group2) certification feature implementation

UTStarcom’s new UI layer framework stabilization Language: C. OS: Real time OS ( Qualcomm’s REX)

Debugging tools: Trace32

Page 11: Portfolio Sungho Yoo

Verizon Wireless mobile phone (CDM-7075)

Company UTStarcom Korea Customer Verizon Wireless Responsibility Call User Interface S/W Development Working Site Korea, New York in USA Project Period 2005~2006

Page 12: Portfolio Sungho Yoo

Verizon Wireless mobile phone (CDM-7075)

Verizon UI requirement base voice and data Call UI implementation. CDG2 (CDMA Development Group2) certification feature

implementation UTStarcom’s new UI layer framework stabilization Language: C. OS: Real time OS (Qualcomm’s REX)

Debugging tools: Trace32

Qualcomm CDMA Protocol Stack

Qualcomm’s Protocol API

UTStarcom’s UI Framework

Phone Book App Call UI App SMS App Etc. Apps

Modem Driver H/W Drivers REX OS DB

Page 13: Portfolio Sungho Yoo

AT&T Mobile Messaging Phone

Company UTStarcom Korea Customer AT&T Responsibility SMS, MMS Message S/W Development Working Site Korea, Dallas, LA in USA Project Period 2007~2008

Page 14: Portfolio Sungho Yoo

AT&T Mobile Messaging Phone

Qualcomm UMTS Protocol Stack

Qualcomm’s Protocol API

UTStarcom’s UI Framework

Phone Book App Call UI App SMS,MMS App Etc. Apps

Modem Driver H/W Drivers REX OS DB

SMS, MMS Message composer implementation Qualcomm’s SMS protocol stack API interoperation Openwave’s MMS solution porting Language: C. OS: Real time OS ( Qualcomm’s REX ).

Debugging tools: Trace32

Page 15: Portfolio Sungho Yoo

Morse Talk (Android App)

Company Self Employed Customer Android Market Responsibility Application Development Working Site Korea Project Period 2011

Page 16: Portfolio Sungho Yoo

Rece

ivin

g Pa

rt

Send

ing

Part

Morse Talk (Android App) Use Case

User enter text Message Send Morse code via flash light on-off pattern

Decode Morse code from camcorder vision and convert it to text

Encode text to Morse code

Page 17: Portfolio Sungho Yoo

Morse Talk (Android App)

Android Framework

Vision Processor

Signal Decoding Algorithm

OpenCV Library

Morse Code Translator

Android platform base application implementation OpenCV ( computer vision open source library ) porting Using NDK tool chain for JNI interface Development of signal decoding algorithm from smart phone’s camcorder

vision. Language: C++, Java. Platform: Android. IDE: Eclipse

User Interface

Camera Module

Android Framework

Message Sending Processor

Morse Code Encoder

Camera Flash Light Module

User Interface

Sending Part Receiving Part Flash Light On/Off

Morse Code Pattern

Page 18: Portfolio Sungho Yoo

Adobe Flash Player engine porting on Mstar’s smart TV

Company PINEONE Communication Customer MStar Responsibility Adobe Flash Player Engine Porting Working Site Korea Project Period 2012.1~6

Page 19: Portfolio Sungho Yoo

Mstar’s Android Framework

Mstar’s TV Player

Mstar’s Smart TV

Apps

Flash Player Engine

Mstar’s Webkit Browser

Porting Flash Player engine on Android and Linux system. Trouble shooting Adobe’s device certification test fail item. Porting Adobe’s DRM module ( Flash Access ) on android system Language: C++. Platform: Android, Linux

Adobe Flash Player engine porting on Mstar’s smart TV

Mstar’s decoder, media player, etc

Page 20: Portfolio Sungho Yoo

IP TV application on Smart TV

Company PINEONE Communication Customer LG U plus Responsibility Develop SmartTV’s IP TV application ( Samsung, LG Smart TV) Working Site Korea Project Period 2012.7~2013.2

Page 21: Portfolio Sungho Yoo

Webkit based application platform

Menu and Etc UI

Live Channel Player UI VOD player UI

VOD Purchase, Live Subscription

logic

Developing LG U+ IP TV application on Samsung & LG Smart TV platform.

S/W architecture is designed as a AJAX based Web application which is packaged as embedded app.

VOD player UI, Purchase logic and interoperation with LG U+ Server Language: Java Script, HTML, CSS. Platform: Samsung &LG Smart TV

IP TV application on Smart TV

Embedded Linux OS, VOD & LIVE native player plug in

Page 22: Portfolio Sungho Yoo

Adobe Flash Player Engine porting on NTT Android Set Top Box

Company PINEONE Communication Customer OKI Electronics Responsibility Adobe Flash Player Engine Porting Working Site Korea Project Period 2013.1~

Page 23: Portfolio Sungho Yoo

Jelly bean or Ginger Bread Android Framework

Menu and Etc UI

NTT’s Launcher

Adobe’s Flash Player Engine

NTT’s Movie Channel Apps

Porting Flash Player engine on Android based IPTV set top box. Optimize Adobe’s RTMFP (Real-Time Media Flow Protocol) protocol

stack and enable it to support 1080p, 5Mbps Trouble shooting Adobe’s device certification test fail item. Language: C++. Platform: Android

Adobe Flash Player Engine porting on NTT Android Set Top Box

Telechips chipset based native decoder, devier. etc