Inventor

CHOI BYOUNG-GUN

KR25 patents

⚠️ This page may combine multiple inventors who share the name “CHOI BYOUNG-GUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHOI BYOUNG-GUN

KOREA ELECTRONICS TELECOMM

Voltage controlled oscillator with switching bias

Wideband active balun circuit based on differential amplifier

Low power consuming mixed mode power amplifier

Powerless electronic notepad and powerless wireless transmission system using the same

Direct-conversion frequency mixer

Driving voltage control module

ELECTRONICS & TELECOMMUNICATIONS RES INST

Radioisotope battery and manufacturing method thereof

Energy harvesting device using electromagnetic interference signal and sensor system including the same

Apparatus and method for transmitting data using human body

Apparatus and method for controlling smart wear

LIM IN GI

Transmitter, receiver and method thereof in human body communication system

Telematics system using human body communication, portable device having telematics function using human body communication, and method for providing telematics service using human body communication

Frequency selective modulating apparatus and method using re-spreading code

Frequency selective digital transmission apparatus

KANG TAE WOOK

Crime prevention system using human body communication and crime prevention method using human body communication

Adaptive frequency selective baseband communications method using orthogonal codes

CHOI BYOUNG-GUN

Mobile transmitter and transmitting method thereof

KOREA ADVANCED INST SCI & TECH

Direct-conversion receiver and sub-harmonic frequency mixer thereof

PARK KYUNG HWAN

Method for measuring speed of vehicle using RFID, RFID reader for measuring speed of vehicle, and system for collecting vehicle information using the same

KIM SUNG-EUN

Human body sound transmission system and method for transmitting a plurality of signals

HYOUNG CHANG HEE

Method and apparatus for amplitude modulation of spread signal

HWANG JUNG HWAN

Human body sound transmission apparatus and method for minimizing signal loss

KIM JUNG BUM

Walking guidance apparatus using human body communication

KOREA ATOMIC ENERGY RES

Beta voltaic battery and method of preparing the same

CHOI BYOUNG GUN

Electronic apparatus having control function using human body communication and portable terminal having electronic apparatus control function using human body communication