Ground signal transmission method for digital signals
Abstract
A method is proposed that is used for terrestrial transmission of at least one digital signal, in particular a digital radio and/or TV broadcasting signal. In this method, the at least one digital signal, reduced in its data quantity by coding, is modulated, preferably by the OFDM method, and converted into the frequency position of at least one channel, adjacent to at least one occupied or unoccupied channel (30, 32) for transmitting an analog TV broadcasting signal, and is broadcast in this frequency position. The dynamic scope and the amplitude of the spectrum (41) of the at least one digital signal must undershoot a respectively predetermined value that is markedly less than the dynamic scope or amplitude of the video carrier of the spectrum (35, 36) of the analog TV broadcasting signal, so that there will be only slight intermodulation and cross modulation with other digital signals or with analog signals of other channels. The spectrum (41) of the at least one digital signal is transmitted, separated from at least one adjacent channel (30, 31) by a protective frequency margin (45). When a plurality of digital signals are transmitted in the at least one channel (31), the frequency ranges of at least two digital signals are transmitted, separated from one another by a protective frequency margin (50).
Term
Term ended
Projected expiry passed 7 October 2016, 10 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
22 members in 12 offices
Priority claims8
| Document | Office | Kind | Date |
|---|---|---|---|
| 19538302 | Germany | A | |
| 19538302 | Germany | A | |
| 9601919 | Germany | W | |
| 9601919 | Germany | W | |
| 19538302 | – | – | – |
| DE9601919 | – | – | – |
| DE1995138302 | – | – | – |
| WO1996DE01919 | – | – | – |
Members22
| Document | Office | Kind | |
|---|---|---|---|
| DE19538302A1 | Germany | A1 | |
| WO9715121A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO9715121A3 | World Intellectual Property Organization (WIPO) | A3 | |
| EP0797892A1 | European Patent Office (EPO) | A1 | |
| PL320737A1This record | Poland | A1 | |
| CZ181397A3 | Czechia | A3 | |
| CN1166257A | China | A | |
| JPH10511256A | Japan | A | |
| HK1005114A1 | Hong Kong, China | A1 | |
| EP0797892B1 | European Patent Office (EPO) | B1 | |
| AT191823T | Austria | T | |
| ATE191823T1 | Austria | T1 | |
| DE59604958D1 | Germany | D1 | |
| ES2145515T3 | Spain | T3 | |
| DE19538302C2 | Germany | C2 | |
| RU2173506C2 | Russian Federation | C2 | |
| CZ288840B6 | Czechia | B6 | |
| PL181873B1 | Poland | B1 | |
| US6366309B1 | United States of America | B1 | |
| CN1134981C | China | C | |
| JP2006254495A | Japan | A | |
| JP3850882B2 | Japan | B2 |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Decisions on the lapse of the protection rightsLapsedLAPS | LAPS |
Numbers
- Publication, DOCDB
- 320737
- Publication, EPODOC
- PL320737
- Application
- 96320737
- Application, DOCDB
- 32073796
- Application, EPODOC
- PL19960320737
Titles
- English
- GROUND SIGNAL TRANSMISSION METHOD FOR DIGITAL SIGNALS
Classification
- CPC, 5
- H04H20/42
- H04H20/72
- H04H2201/20
- H04L5/023
- H04N7/0803
- IPC, 7
- H04H20 42
- H04H20 72
- H04J1 00
- H04J11 00
- H04L5 02
- H04N7 00
- H04N7 08