Apparatus and method for modulating of on-channel repeater
US8094603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2004 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Dec 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a modulating apparatus and method of an on-channel repeater. An object of the present invention is to provide a modulating apparatus of an on-channel repeater for reducing time delay by configuring and up-sampling a baseband signal, filtering the up-sampled baseband signal with an Equi-Ripple (ER) filter or in a window method, and converting the filtered baseband signal into an RF signal. The modulating apparatus includes: a baseband signal configuring unit for configuring a baseband. signal by combining an input field and a segment sync signal; a pilot adding unit for adding a pilot signal to the baseband signal; a filtering unit for filtering the baseband signal with the pilot signal; and an RF up-converting unit for up-converting the filtered signal into an RF signal. The present invention is used to form an on-channel repeating network in a transmitting system including a digital TV broadcasting system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.