Extended Data Services

Extended Data Services

Extended Data Services (now XDS, previously EDS), is an American standard classified under Electronic Industries Alliance standard CEA-608-E [http://www.ce.org/Standards/browseByCommittee_2523.asp] for the delivery of any ancillary data (metadata) to be sent with an analog television program, or any other NTSC video signal.

XDS is used by TV stations, TV networks, and TV program syndication distributors in the USA for several purposes.

Here are some of the most common uses of XDS:

* The "autoclock" system delivers time data via an XDS "Time-of-Day Packet" for automatically setting the clock of newer TVs & VCRs sold in the USA. Most PBS stations provide this service.
* Rudimentary program information which can be displayed on-screen, such as the name and remaining time of the program,
* Station identification,
* V-chip content ratings data.

XDS is also used by the American TV network ABC for their Network Alert System (NAS). NAS is a one-way communication system used by ABC to inform and alert their local affiliate stations across the USA of information regarding ABC's network programming (such as program timings & changes, news special report information, etc.), using a special decoder manufactured for ABC by EEG Enterprises [http://www.eegent.com] , a manufacturer of related equipment for the TV broadcast industry such as closed captioning and general-purpose XDS encoders.

XDS uses the same line in the VBI as closed captioning (NTSC line 21), but it utilizes the second video field (as opposed to closed captioning's line 21, field 1).

External links

* [http://www.csc.uvic.ca/~csc454/notes/fault.vcrtime.html Does anybody really know what time it is?] - Faults & Failures October 2000 IEEE Spectrum - about some failures in the autoclock system in 2000

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Extended cycle combined hormonal contraceptive — Extended cycle combined hormonal contraceptives Background Birth control type Hormonal First use ? Pregnancy rates (first year) Perfect use ? Typical use ? …   Wikipedia

  • Extended cycle combined oral contraceptive pill — Extended cycle combined oral contraceptive pills are COCPs packaged to reduce or eliminate the withdrawal bleeding that occurs once every 28 days in traditionally packaged COCPs. Extended cycle use of COCPs may also be called menstrual… …   Wikipedia

  • Extended Remote Copy — or XRC is an IBM zSeries and System z9 mainframe computer technology for data replication. It combines supported hardware and z/OS software to provide asynchronous replication over long distances. It is complementary to IBM s Peer to Peer Remote… …   Wikipedia

  • Extended SMTP — (ESMTP), sometimes referred to as Enhanced SMTP, is a definition of protocol extensions to the Simple Mail Transfer Protocol standard. The extension format was defined in RFC 1869 in 1995.RFC 1869 established a structure for all existing and… …   Wikipedia

  • Extended Enterprise Modeling Language — (EEML) is commonly used for business process modeling across a number of layers. EEML is intended to be a simple language, which makes it easy to update models. In addition to capturing the various tasks(can consist of several sub tasks) and… …   Wikipedia

  • Data Matrix — An example of a Data Matrix code, encoding the text: Wikipedia, the free encyclopedia Reading Data …   Wikipedia

  • TE Data — Infobox Company company name = TE Data company foundation = 2001 location city = Cairo location country = Egypt | industry = ISP, Communications key people = Eng. Azza Torky, Chairman, Eng. Emad El Azhary, Vice Chairman and Managing Director num… …   Wikipedia

  • Microsoft Data Access Components — MDAC redirects here. For other uses, see MDAC (disambiguation). MDAC (Microsoft Data Access Components) Microsoft Corporation s MDAC provides a uniform framework for accessing a variety of data sources on their Windows platform. Developer(s)… …   Wikipedia

  • Telecommunications Services of Trinidad and Tobago — Limited (generally known as TSTT) is the largest telephone and Internet service provider in Trinidad and Tobago. The company, which is jointly owned by the Government of Trinidad and Tobago and Cable Wireless, was formed out of a merger of Telco… …   Wikipedia

  • Radio data system — Le radio data system (RDS) est un service de transmission de données numériques en parallèle des signaux audio de la radio FM en bande II. Notamment, le RDS permet l écoute d une station sans interruption lors d un déplacement, en prenant en… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.