EP 0347354 A1 19891220 - Broadcasting of information messages, especially road information, to fixed or mobile receivers for intermittent listening.
Title (en)
Broadcasting of information messages, especially road information, to fixed or mobile receivers for intermittent listening.
Title (de)
Senden von Nachrichten, insbesondere Verkehrsnachrichten, zu festen und beweglichen Empfängern für intermittierenden Zuhören.
Title (fr)
Diffusion de messages d'informations, notamment d'informations routières, à destination de récepteurs fixes ou mobiles à écoute intermittente.
Publication
Application
Priority
FR 8808348 A 19880617
Abstract (en)
The invention relates to the field of systems for broadcasting through a channel with imperfect transmission and with limited throughput, destined for fixed or mobile receivers with intermittent listening. The objective is to allow a reliable transmission of information which can be directly interpreted by on-board storage and processing means. This objective is achieved with the aid of a method consisting in transmitting information messages (M1, M2) of discrepancy relative to an equilibrium state, with message identifying and a priori lapse time (t'1, t'2). The invention applies advantageously to the transmission of road information. <IMAGE>
IPC 1-7
IPC 8 full level
G08G 1/09 (2006.01)
CPC (source: EP)
G08G 1/092 (2013.01); G08G 1/094 (2013.01)
Citation (search report)
- [A] BBC RESEARCH DEPARTMENT REPORT, no. 17, novembre 1987, pages 1-23, Tadworth, Surrey, GB; A.G. LYNER: "Experimental radio data system (RDS): A survey of reception reliability in the UK"
- [A] RUNDFUNKTECHNISCHE MITTEILUNGEN, vol. 30, no. 3, mai/juin 1986, pages 101-108, Munich, DE; J. MIELKE et al.: "Radio-Daten-System RDS - Gegenwärtiger Entwicklungsstand und Versuchsergebnisse"
Designated contracting state (EPC)
DE ES GB NL
DOCDB simple family (publication)
EP 0347354 A1 19891220; EP 0347354 B1 19930609; DE 68906966 D1 19930715; DE 68906966 T2 19940120; ES 2042051 T3 19931201; FR 2633080 A1 19891222; FR 2633080 B1 19901109
DOCDB simple family (application)
EP 89460016 A 19890614; DE 68906966 T 19890614; ES 89460016 T 19890614; FR 8808348 A 19880617