Inventor

TACK JONG SANG

KR2 patents

Patents

2 patents

US9515748B2Dec 6, 2016

Encoding apparatus and method for encoding sound code, decoding apparatus and method for decoding the sound code

POWERVOICE CO LTD27 citations87

US9783137B2Oct 10, 2017

Sound QR system for vehicular services

POWERVOICE CO LTD2 citations66