Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1991-12-09
1993-03-09
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
4551861, 340905, 340988, H04B 700, G08G 109
Patent
active
051932148
ABSTRACT:
A vehicular radio receiver with an RDS (Radio Data System) decoder for decoding digitally coded traffic announcements is improved by using short codes for common traffic problems in order to minimize the required transmission capacity. The receiver includes a database with, for example, 256 fields, each containing a short traffic problem description.
Transmission of the actual numerical values for the length of a traffic problem or for visibility in fog is dispensed with. Instead, defined standardized numerical information is stored in the same memory field as the short description of the traffic problem so that they can be retrieved together. Furthermore, a pre-determined staggering of the numerical values is provided so that the memory capacity, and the transmission capacity, does not increase unnecessarily.
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Peter Bragas, "With Traffic Guidance Systems against Total Traffic Collapse", Man Forum magazine, Jan. 1991, pp. 26-29, publ. by the Man Group, Munich, Germany.
Map of Area between Hildeshiem (Blaupunkt HQ) & Hamburg, West Germany.
Boretz, "Travel Pilot System Set for End-of-Year Debut," Automotive Electronics Journal, Jan. 29, 1990, p. 19.
Specifications of the Radio Data System RDS for VHF/FM Sound Broadcasting (Eur. Bdcastg. Union, Mar. 1984)--AU 263 Lib., also known as EBU Technical Standard 3244-E (60 pages).
Bragas Peter
Duckeck Ralf
Mardus Claus
Eisenzopf Reinhard J.
Faile Andrew
Robert & Bosch GmbH
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