Software Development

Wireless Price Display System

This project was my final team project for "Electrical Engineering Laboratory 3" class in 2004 (when I was junior in college). The goal was to make a wireless system that substitutes price tags with electrical displays in grocery stores. The base station manages a list of products in the database, and it sends out price information to receiver units. Receiver units are simple character displays having unique IDs. When any products' prices change, the system can easily update new prices on these displays. 

Drupal Course Management Module for UMD Websites

This project was designed to provide most up-to-date courses information to University of Maryland College of Arts and Humanities (ARHU) websites. Since most ARHU websites were implemented with Drupal (Content Management System), a Drupal module was developed to migrate the university's course catalogs into Drupal databases. For crawling the course catalogs, Brady Law (CS student)'s Python scripts were modified and re-implemented.

Development of a VoIP Testing Program

Skype's SILK codec was tested as an exploratory project to see if there was an opportunity to integrate real-time audio communication with smart TVs. This project was conducted as an internship project in LG Electronics' LCD TV Research Lab in 2010. Siwon Yang (currently, a developer at Hyundai Mobis) and I implemented a VoIP testing program on Linux using C and SLIK codec APIs. The video is a demo of the testing program.

Human-Robot Interaction via Sound

This prototype was an intermediate result of a robot-human interaction project conducted at Torooc Inc., a VC-funded start-up company where I was a co-founder and Director of Software Development, in 2011. We started up this company through winning the first-place prize at the 2012 Start-up Competition by Seoul National University R&DB Foundation and Seoul Techno Holdings. 

"I know where that is": Cultural Differences in Perception of New Places

This research project had been conducted for my master's thesis (Master of Information Management degree). I conceptualized cultual background with Hall's high- and low-context culture (1976) and tried to see whether people's perceptions of urban places vary between physical addresses and symbolic representations of spaces (landmarks), when their cultural backgrounds were different. A survey questionnaire was used to measure cultural background, and a web-based online game was used to measure people's perceptions of places.