Editing Radio Data System (section)

==Development==
RDS was inspired by the development of the [[Autofahrer-Rundfunk-Informationssystem]] (ARI) in Germany by the [[Institut für Rundfunktechnik]] (IRT) and the radio manufacturer [[Blaupunkt]].<ref name="rdsorg25">{{cite web |title=March 2009: RDS is now 25 – the complete history |url=http://www.2wcom.com/fileadmin/redaktion/dokumente/Company/25_years_RDS.pdf |publisher=RDS Forum |location=Geneva, Switzerland |date=2009-03-25 |page=1 |access-date=2011-06-15}}</ref> ARI used a 57-kHz subcarrier to indicate the presence of traffic information in an FM radio broadcast.<ref>{{Cite patent|country=EP|number=1432157|title=Method for separating a RDS signal component and signal receiver|pubdate=2004-06-23|assign=[[Sony|Sony International (Europe) GMBH]]|inventor1-last=Wildhagen|inventor1-first=Jens}}</ref>

The EBU Technical Committee launched a project at its 1974 [[Paris]] meeting to develop a technology with similar purposes to ARI, but which was more flexible and which would enable automated retuning of a receiver where a broadcast network transmitted the same radio programme on a number of different frequencies. The modulation system was based on that used in a Swedish paging system and the baseband coding was a new design, mainly developed by the [[British Broadcasting Corporation]] (BBC) and the IRT. The EBU issued the first RDS specification in 1984.<ref name="rdsorg25" />

Of the three broadcasting partners of the EBU, the BBC were reportedly pursuing the application of RDS technology most enthusiastically and sought to attract bids from manufacturers to make a "BBC-accredited radio" supporting RDS features. Having received no manufacturer interest, however, the corporation engaged designers at Kinneir Dufort to produce a prototype showcasing these features. This prototype, unveiled in 1989, incorporated a [[liquid-crystal display]] capable of showing images such as weather maps, accompanied by "a light pen with which the radio can be programmed from barcodes", these barcodes encoding programme information, and supported detachable modules, of which a cassette player module and a printer module were developed. Despite reluctance to develop screen-based functionality that might bring RDS into competition with television, the utility of being able to print out information such as weather maps or even advertising was regarded as potentially interesting to both radio and television manufacturers alike.<ref name="design198902_rds">{{ cite magazine | url=https://archive.org/details/sim_design_1989-02_482/page/n27/mode/2up | title=Like radio, only more so | magazine=Design |issue=482 | date=February 1989 | access-date=3 April 2022 | last1=Hancock | first1=Marion | pages=28–29 }}</ref>

Enhancements to the alternative frequencies functionality were added to the standard and it was subsequently published as a [[European Committee for Electrotechnical Standardization]] (CENELEC) standard in 1990.<ref name="rdsorg25" />

In 1992 the U.S. [[National Radio Systems Committee]] issued the North American version of the RDS standard, called the Radio Broadcast Data System. The CENELEC standard was updated in 1992 with the addition of [[Traffic Message Channel]] and in 1998 with Open Data Applications<ref name="rdsorg25" /> and, in 2000, RDS was published worldwide as IEC standard 62106.<ref>{{cite web |title=IEC Webstore Publication detail: IEC 62106 Ed. 1.0 English |url=http://webstore.iec.ch/webstore/webstore.nsf/artnum/025877 |publisher=International Electrotechnical Commission |location=Geneva, Switzerland |access-date=2009-05-18}}</ref>

=== RDS2 ===
The RDS-Forum (Geneva/CH) decided at its annual meeting (8–9 June 2015) in Glion/Montreux to bring the new standard RDS2 on the way. The standard will be created in close collaboration with U.S. colleagues from NRSC RBDS-Subcommittee and should offer a unified platform for FM broadcasting and data services worldwide. 
[[File:RDS1 RDS2.png|thumb|Logo for RDS1 and RDS2]]
;Key features:
* Seamless support for frequencies from 64&nbsp;MHz to 108&nbsp;MHz (AF, [[Enhanced other networks|EON]])
* New character coding: [[UTF-8]] (old EBU Charset<ref name="tech.ebu.ch/3232a">{{cite web |title=3232a-1982 Displayable character set for teletext |url=https://tech.ebu.ch/docs/tech/tech3232a.pdf |website=EBU Tech |access-date=4 November 2022}}</ref> remains for compatibility mode for the old 0A/2A Groups).
* New ODA handling, "B" groups are assigned as signalling group to the "A" groups.
* Long PS-Name, up to 32 byte with UTF-8 character set. (Indian, Chinese, Arabic, and more)
* RadioText (eRT) 128 byte long with UTF-8 character set.
* Increased capacity from 11.4 up to 57 "A"-groups per second. (2,109 bit/s. net capacity with the single modulation-type multiple subcarriers (SMMS) technology)
* Graphical RadioText – supports HTML/CSS templates (for smartphones, car radios, computers/tablets)
* Supports return channel over gRT if the receiver has IP or SMS capability.
* Broadcaster's graphical logo – a maximum 4 kilobyte picture (JPEG, PNG, or GIF)
* Hybrid Radio feature (partly based on Radio France development)