Method and apparatus for addition data transmission and reception in digital broadcast system
US8837553B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 23, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Nov 23, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.