Entrusted development applications for Android devices and iOS devices.Android SDK, NDK, Java, C, ProguardiOS SDK, Apple frameworks(UIKit, CoreData, etc.) Objective-C

Mar.2009-Nov. 2009 Technical trend survey about Car-to-Car communication system Tools & TechnologyPatent search systemApr. 2007-Mar. 2009 Development of Over Giga-bit Wireless LAN system A part of National Project of developing 3Gbps Wireless LAN system Development of Media Access Control unit Development of test system for the unit Tools & Technology HDML 　Managing outside manufacturerMar. 2006-Apr. 2007 Research and Development of Multimedia communication by millimeter wave radio signal Activity in international standardization committee (IEEE802.11.15.3c – Wireless Personal Area Netowk Millimeter Wave Alternative PHY) R&D of Media Access Control Protocol for millimeter wave PHY – Computer Simulation of efficiency of prototype of MAC Protocol Computer simulation of propagation and reflection of millimeter wave in living room Tools & Technology C/C++ language programming for simulation Matlab/Simulink OPNET English language

Jun. 2005-Oct. 2005 Preliminary research in WiMAX System Attending Standardization conference (WiMAX Forum) Participating meetings with foreign company (joint development)Mar. 2004-Jun. 2005 Development of experimental product of cellular phone with terrestrial digital television function Leading user interface & browser team (5 members) Researched on ARIB standards.Plotted out basic design of terrestrial digital television functionConducted functional design, detailed design, and writing codes (C Language) of data broadcasting browserParticipating technical committee of the association for promotion of digital broadcasting (D-pa)Mar. 2002- Mar. 2004 Development of WindowsCE based cellular phoneDesigned and wrote codes of customization for Japanese standardInitiating technical negotiation with Microsoft Corp. (meeting with development team & technical support tem of Microsoft Corp.) Tools & Technology: WindowsCE Realtime OS for cellular phone (REX) C/C++ language programmingMar. 2001-Mar. 2002 VoIP empirical experiment on 1xEV-DO system Leading experiment team (5 members)Developed VoIP phone for experiment (C/C++, Programming on Linux PC and StrongARM board)Analyzing and evaluating VoIP possibility on 1xEV-DO systemTools & Technology: C/C++ language, StrongARMRealtime OS, LinuxFeb. 2001-Mar.2001 Development of demonstration system of multimedia function of cellular communication system Developing demonstration software of moving picture streaming function on cellular device (which is demonstrated at trade show) Tools & Technology: WindowsCE Windows Media ServerDec. 2000-Feb. 2001 Development of image encoder and decoder module for cellular phone Developed PNG (Portable Network Graphics) encoder and decoder module　(functional design, detailed design, writing codes and test) Developed JPEG encoder / decoder module (writing codes and test)

Jul. 1996 – Dec. 2000 Developing ATM (Asynchronous Transfer Mode) access system for NTT.Participating specification study meeting of the system with NTT Lab.Leading of designing interface specification between element manager and equipment.Designing element manger server application (on UNIX server) and HMI (Human-Machine Interface) (on UNIX Workstation).Considering North American specification of ATM access system (meeting with US subsidiary).Tools & Technology: Maintenance and administrative method of communication equipment Element manager of communication equipment, CMIPApr. 1996 - Jul. 1996 Initial training