65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: +359 56 820027, Fax: +359 56 836700
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com
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Radio Text +
RadioText Plus is “semantic analogue radio”. It allows the RDS feature RadioText (RT) to be
read by the FM RDS receiving terminals. Based on the RDS RT messages, RT+ is completely
backwards compatible with RT. The usage of RT+ allows the listener/user to derive additional
benefits from the RDS Radio Text service. It enables FM RDS receivers to “read” Radio Text
(to recognize designated objects and make them manageable) by user’s direct access to specific
elements of the Radio Text messages. For example, that element could be programme associated
metadata like Title and Artist of the currently playing song or a news headlines. This provides the
listener with an “mp3-player feeling” while listening to analogue FM radio. The elements can also
carry additional service messages or information about the Radio Station such as the telephone
number or the web address of the Radio Station’s hotline. These objects, or more accurately RT+
information elements carried in the RDS RadioText (RT) messages, are identified by their location
within the RT messages and by the class code of their content type. Once an information element
is received and understood, a receiver is able to, for example, store the different RT+ information
elements and the listener may then select and request a specific content type from the radio’s
memory at an instant in time that suits the listener’s needs. Thus the listener is no longer forced
to watch the RT information passing (scrolling) by. Moreover, RT+ offers selected RT message
elements to car drivers on a static display, without risk of distracting the attention of the driver.
Furthermore, RT+ is well suited for mobile phones with built-in FM receivers: telephone numbers
can be directly used to initiate calls, and web addresses can be used to start browsing the web
content offered by the radio programme provider. Last but not least, RT+ is also used for satellite
radio broadcasting via DVB-S. It may be adopted by DRM and DAB in the future, too.
