William Park & Associates Ltd.
Method and apparatus for addition data transmission and reception in digital broadcast system
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.
Nextwill Co., Ltd. Electronics and Telecommunications Research Institute Seoul, Republic of Korea
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Young Woo Ju Byung Jae Hyun Nam Ho Ho Min Won Gi Sung Ik Ha Kyun Hyoungsoo Heung Mook Jae Kwon
Suh Kim Seo Hur Eum Seo Park Mok Lim Kim Lee