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Analog Radio
Published in Skip Pizzi, Graham A. Jones, A Broadcast Engineering Tutorial for Non-Engineers, 2014
The RDS signal can carry up to about a dozen different types of data related to the station and its content, such as station identification, station format, song titles, artist names, and other program- or station-related information. It can also accommodate other text such as weather and traffic updates, or emergency alerting. RDS data can be displayed as static or scrolling text on a receiver's display panel. It has allowed analog FM broadcasters to add metadata to describe their services and/or content, and thereby compete with digital services that inherently include such additional descriptive material.
Installing AM HD Radio And Making It Work
Published in Thomas R. Ray, HD Radio Implementation, 2012
Analog FM radio has, for a long time, had the ability to send certain PAD to listener’s radio, such as title and artist of the song currently playing. This is accomplished through an RDS data subcarrier of 57 kHz injected along with the transmitted stereo baseband. The radio would interpret the data sent on the RDS 57-kHz subcarrier, and display title and artist information on the listener’s radio (if it was RDS-equipped).
Empirical evaluation of real-time traffic information for in-vehicle navigation and the variable speed limit system
Published in Journal of Intelligent Transportation Systems, 2019
Williams Ackaah, Klaus Bogenberger, Robert L. Bertini
RTTI providers can use data from the primary stationary detectors, which in most cases are owned by the government, for broadcasting messages. However, new methods for measuring speeds and travel times such as the floating car data and floating phone data now enable private service providers to offer their services without necessarily having to rely solely on detector data. The data gathered from different sources are then fused. In Germany, service providers process the available data, integrate, and transmit them to the vehicles, smart phones, and so on of the customers through traffic message channel (TMC) technology. The processed traffic information is digitally coded into radio data system (RDS) and transmitted via conventional FM radio broadcast. It can also be transmitted on digital audio broadcasting (DAB) or satellite radio (Wikipedia, 2016). RDS-TMC can embed only a small amount of digital information.
An improved Huffman coding with encryption for Radio Data System (RDS) for smart transportation
Published in Enterprise Information Systems, 2018
C. H. Wu, Kuo-Kun Tseng, C. K. Ng, G. T. S. Ho, Fu-Fu Zeng, Y. K. Tse
RDS is a data broadcast protocol which carries digit data using the sub-carrier of FM radio, and its first version was published by the European Broadcast Union. Figure 1 shows the baseband coding structure of the RDS.