sungho yoo's software development portfolio
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Sungho Yoo's software development portfolioTRANSCRIPT
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Sungho Yoo’s Por-olio
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Company Hyundai Electronics Inc. Customer SK Telecomm Responsibility Channel Card SoFware Development Working Site Korea Project Period 2001
1xCDMA Macro System
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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
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Company Hyundai Electronics Inc. Customer KTF Responsibility Modem Card SoFware Development Working Site Korea Project Period 2002
1xEV-‐DO Macro System
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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
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Company Hyundai Electronics Inc. Customer KTF Responsibility Modem Card SoFware Development Working Site Korea Project Period 2003~2004
1xEV-‐DO Micro System
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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
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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)
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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
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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
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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
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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
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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
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Morse Talk (Android App)
Company Self Employed Customer Android Market Responsibility ApplicaQon Development Working Site Korea Project Period 2011
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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
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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
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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
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Call ConfirmaQon ( Android App ) Use Case
User try calling It requests paoern lock password Proceeds dialing aFer user unlock password
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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