Download - Sungho Yoo's software development portfolio
Sungho Yoo’s Por-olio
Company Hyundai Electronics Inc. Customer SK Telecomm Responsibility Channel Card SoFware Development Working Site Korea Project Period 2001
1xCDMA Macro System
1xCDMA Macro System
CSM Modem driver
§ Trouble shooQng and bug fixing § CDMA protocol flow control S/W maintenance § IS95B feature implementaQon
( Cell BroadcasQng Service, Voice Privacy, Etc.) § Language: C. OS: Qualcomm’s REX
CSM Modem H/W
SK Telecomm’s Base Tranceiver StaQon
SK Telecomm’s Base StaQon Control
L1,L2 Layer
Flow Control S/W
L3 Layer
Physical layer
E1/T1 Air Link
Mobile Phone
ApplicaQon Layer
L2 Layer
L1 Layer
Company Hyundai Electronics Inc. Customer KTF Responsibility Modem Card SoFware Development Working Site Korea Project Period 2002
1xEV-‐DO Macro System
1xEV-‐DO Macro System
CSM Modem driver
§ 1xEV-‐DO modem (CSM5500) chip driver S/W PorQng § 1xEV-‐DO Physical, Mac Layer protocol stack S/W porQng § Distributed System base 1xEV-‐DO protocol flow control applicaQon
development § Language: C++. OS: Windriver Vxworks
CSM Modem H/W
Base Tranceiver StaQon
Mac Layer
Flow Control S/W
Security Layer
ConnecQon Layer
Session Layer
Steam Layer
ApplicaQon Layer
Physical layer
ATM Air Link
Mobile Phone Base StaQon Control
Company Hyundai Electronics Inc. Customer KTF Responsibility Modem Card SoFware Development Working Site Korea Project Period 2003~2004
1xEV-‐DO Micro System
1xEV-‐DO Micro System
CSM Modem driver
§ 1xEV-‐DO modem (CSM5500) chip driver S/W PorQng § 1xEV-‐DO Physical, Mac Layer protocol stack S/W porQng § Distributed System base 1xEV-‐DO protocol flow control applicaQon
development § Language: C++. OS: Windriver’s Vxworks
CSM Modem H/W
Base Tranceiver StaQon
Mac Layer
Flow Control S/W
Security Layer
ConnecQon Layer
Session Layer
Steam Layer
ApplicaQon Layer
Physical layer
TCP/IP Air Link
Mobile Phone Base StaQon Control
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)
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 implementaQon.
§ CDG2 (CDMA Development Group2) cerQficaQon feature implementaQon
§ UTStarcom’s new UI layer framework stabilizaQon § Language: C. OS: Qualcomm’s REX. Debugging tools: Trace32
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
Verizon Wireless mobile phone (CDM-‐7075)
§ Verizon UI requirement base voice and data Call UI implementaQon. § CDG2 (CDMA Development Group2) cerQficaQon feature
implementaQon § UTStarcom’s new UI layer framework stabilizaQon § Language: C. 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
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
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 implementaQon § Qualcomm’s SMS protocol stack API interoperaQon § Openwave’s MMS soluQon porQng § Language: C. OS: Qualcomm’s REX. Debugging tools: Trace32
Morse Talk (Android App)
Company Self Employed Customer Android Market Responsibility ApplicaQon Development Working Site Korea Project Period 2011
Receiving Part
Send
ing Part
Morse Talk (Android App) Use Case
User enter text Message Send Morse code via flash light on-‐off paoern
Decode Morse code from camcorder vision and convert it to text
Encode text to Morse code
Morse Talk (Android App)
Android Framework
Vision Processor
Signal Decoding Algorithm
OpenCV Library
Morse Code Translator
§ Android plaporm base applicaQon implementaQon § OpenCV ( computer vision open source library ) porQng § Development of signal decoding algorithm from smart phone’s camcorder
vision. § Language: C++, Java. Plaporm: 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 Paoern
Call ConfirmaQon ( Android App )
Company Personal Group Project Customer Android Market Responsibility Ad module, DB etc. S/W Development Working Site Korea Project Period 2011
Call ConfirmaQon ( Android App ) Use Case
User try calling It requests paoern lock password Proceeds dialing aFer user unlock password
Call ConfirmaQon ( Android App )
Android Framework
Call Intent Processor
User Interface
Cauly, Admob AD module
White Number List DB
§ Ad module implementaQon § White number list data base and Etc. § Language: Java. Plaporm: Android. IDE: Eclipse
