Procedure for the identification of transmitter or region in common-wave broadcasting networks
US5544198A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1993 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Sep 10, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The method pertains to wireless transmission in the common-wave operation. For the operation of common-wave networks, it is required that the modulation contents of the transmission frequencies (1 . . . m) transmitted by the individual transmitting stations are identical. However, in order to enable a station or regional identification, one or more regionally differing additional carrier frequencies (n-3 . . . n) are transmitted, whose reception permits the selection of specific regionally related news or messages in the receiver. The demand of additional carrier frequencies may be reduced to four individual frequencies or frequency groups, if these additional carriers are modulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.