EP 0994586 A1 20000419 - Method and data frame structure for the digital transmission of information with quasi-seamless switch to an alternative frequency
Title (en)
Method and data frame structure for the digital transmission of information with quasi-seamless switch to an alternative frequency
Title (de)
Verfahren und Datenrahmenstruktur zur digitalen Nachrichtenübertragung mit quasi-nahtlosen Umshalten auf alternative Frequenzen
Title (fr)
Méthode et structure de trame de données pour la transmission numérique d'information avec passage quasi-transparent à une fréquence alternative
Publication
Application
Priority
EP 98119400 A 19981014
Abstract (en)
For a digital transmission information system, in particular broadcast systems that deliver the same services in adjacent areas on different frequencies like DAB, video and data transmission in LF-, MF- or HF ranges, the invention proposes criterias to switch to alternative frequencies without loosing the service (seamless switch). The transmission system is defined such that the receiver is able to test the alternative frequencies without loosing any relevant information on the current tuned frequency. The signal in the air consists of two parts, i.e. a continuous data-channel (SDC) like audio with interleaving in time but not repeated, and a static data-channel (SDC) including information about the service, multiplex configuration, program type, transmitter ID, service ID and alternative frequency list. During the static data-channel, the receiver has the time to check alternative frequencies without losing relevant information data. <IMAGE>
IPC 1-7
IPC 8 full level
H04H 1/00 (2006.01); H04H 20/26 (2008.01)
CPC (source: EP)
H04H 20/26 (2013.01)
Citation (search report)
- [XA] EP 0689307 A1 19951227 - NOKIA TECHNOLOGY GMBH [DE]
- [Y] GB 2247121 A 19920219 - PIONEER ELECTRONIC CORP [JP]
- [Y] "DAB-EMPFANGSTECHNIK", FUNKSCHAU, vol. 67, no. 11, 12 May 1995 (1995-05-12), pages 36 - 39, XP000517147
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0994586 A1 20000419; EP 0994586 B1 20070606; DE 69837881 D1 20070719; DE 69837881 T2 20080228
DOCDB simple family (application)
EP 98119400 A 19981014; DE 69837881 T 19981014