# Web Engine on Web App Platform for Vehicle (C++, Linux) - Developed and integrated webengine which is based on Chromium open source by implementing Chromium Embedded Framework interface to support rendering, touch, speller, audio, configuration/control of webengine with RESTful interface microservice/module.- Developed a prototype of Service Worker implementation which uses an external notification system.# Web Navigation (Vue.js, javascript) - Developed web navigation front end for searching location/routing paths, real-time driving guidance and simulated driving with geolocation coordinates and server data.

# Mobile Voice Assistant (C++, Linux)- Developed Hybrid Speech Recognizer which switches recognizing path between network/embedded recognizers depending on the result.- Developed 'dialog based NLU' module which handles asynchronous events from communications between the NLU server and device inputs(touch, audio recording) in natural sequence with tasks queueing, and maintains dialog context states simultaneously.

# Feature Phone 3D Effect Library (C, OpenGL|ES, SHP)- Developed 3D effect library by implementing page curling with Bezier surface, anti-aliasing, image masking, animation and animation timing interpolation module.- Developed seamless photo gallery viewer by binding and caching image data along with touch events(tap, move, swipe, flick).- Android Porting (Android, NDK, JNI, Java)# Android GUI Framework (C++, MFC, Java, Eclipse plug-in)- Analyzed requirements of GUI framework for convenient UX development.- Developed GUI authoring tool which allows users to edit UI easily, manage components/projects and build to Android apk package.- Developed Android UI component library supports page, button, image list, image components which has been inserted into Android app by authoring tool.# SVG GUI Platform (C++, MFC)- Designed UI Template scheme using SVG.- Developed GUI authoring tool which provides UI editing, scene/object/resource managing, drag & drop, undo/redo and GUI XML schema loading/saving.# Smart TV App (Javascript, jQuery, HTML, CSS, Ajax, XML, Json)- As a leader of the project, managed hundreds of apps with 7 software engineers and communicated with the client.- Debugged and optimized web apps to support web app compatibility with Webkit.

# Rich Media Solution (C++, MFC): Rich Media Solution for broadcasting with LASeR(MPEG-4 Part 20) specification- Improved performance and design of the authoring tool’s editor by refactoring.- Developed vector graphics editor's features which allow users to draw objects with Bezier curve handles.- Implemented LASeR Spec with LASeR, SVG encoding, decoding and generating LASeR XML by comparing SVG Scene DOM differences.

# RF Signal Detecting System (C++, MFC)- Performed SW refactoring, improved performance, developed additional features and system setup.- Developed interface module for RF signal analysis, detecting, signal saving.- Developed control of distributed system and multi process with TCP/IP Network.- Implemented controller module for Tuner, ADC, DSP, DDR, Delay Memory equipment.- Adjusted signal detection algorithm.# RF Environment Measurement System (C++, MFC)- Project Leader- Developed drawing signal data spectrum, marking data on GIS Map and generating graphs by measuring radio frequency noise, spectrum, quality and usage.- Designed DB schema and setup(MS-SQL)- Developed data statistics.# Education electronics (C, Atmega8L)- Developed electronic abacus embedded SW which plays audio and displays with 7-segments for arithmetic question/answer, by implementing NAND flash memory reading/writing, generating audio output with implementing ADPCM algorithm, RC/LC pulse counting and RS232C communication.

# Application for PC Security (C++, MFC, C, Win32)- Developed Windows logon with fingerprint module by implementing Windows GINA Library and Windows Authentication Package.- Developed modules for network log, shared folder control.# PC control Application (C++, MFC, Win32)- Project Leader- Developed Windows daemon service to prevent children’s excessive use of computers.# Utility for Windows security (ActiveX)- Developed PC security weakness analysis utility by checking current Windows security option settings and security patches applying.