Electronics and Telecommunications Research Institute

Korean Broadcasting System

Nextwill Co., Ltd.

Seoul, Republic of Korea

Jae Kwon Lee

Nam Ho Hur

Heung Mook Kim

Sung Ik Park

Young Woo Suh

Hyoungsoo Lim

Ho Min Eum

Jae Hyun Seo

Won Gi Seo

Ju Byung Kim

Il Soo Kyung

Ha Kyun Mok

Provided are an apparatus for addition data transmission includes: an IF broadcasting signal generating unit receiving the broadcast data, and FEC and modulation of the received broadcast data to generate a broadcasting signal in an intermediate frequency (IF) band; an IF addition signal generating unit receiving the addition data to generate an addition signal in the IF band by using direct sequence spread spectrum (DSSS); an average power controlling unit controlling average power of the addition signal in the IF band; a signal combining unit combining the broadcasting signal in the IF band and the addition signal in the IF band to generate a combination signal; an RF upward converting unit upwardly converting the combination signal in a signal in a radio frequency (RF) band to a combination signal in the RF band; and a transmitting unit transmitting the combination signal in the RF band.

Method and apparatus for addition data transmission and reception in digital broadcast system

An apparatus for embedding additional information that may embed additional information into a digital television (TV) broadcast signal and transmit the additional information is provided. The apparatus may modulate the additional information to an intermediate frequency/radio frequency (IF/RF), embed the modulated additional information into the digital TV broadcast signal, and compensate for a distortion that may occur in an RF part, thereby correctly transmitting the additional information.

Apparatus for transmitting additional information using digital broadcast system

Growing community of inventors

Seoul, South Korea

Jae Kwon Lee