Inventor

UM BONG SU

KR2 patents

Patents

2 patents

US7623959B2Nov 24, 2009

Method and system for providing voice-based supplementary information service using road map data

SK TELECOM CO LTD3 citations59

US7890250B2Feb 15, 2011

Navigation system and controlling method for the motor vehicle

SK TELECOM CO LTD2 citations58