Clydern Text

Clydern Text is the name of both the analogue and digital teletext service provided on Clydern Television, the Network Six region for Central Scotland. The analogue and digital services contain exactly the same content on the same pages (with extra content available on the digital service). The digital service on Sky also contains extra video multi-screens, which are not available on Freeview due to the space limitations of the platform. The analogue service is also broadcast as a DVB-TXT stream on the digital platforms for set-top boxes that support it (including all Sky Digiboxes). Only the analogue service is available on both analogue and digital cable platforms at this time.

History
Clydern Text stated it's life in early 2005 with the launch of Clydern Television. It originally was a small, analogue only service consisting of mainly News, Sports, Weather, TV Listings and a small Leisure section. The full service on both analogue and digital launched on 30th November 2005 to coincide with the launch of 6-Net. In April 2006, the digital service was redesigned to replace the blue and white graphics with something more appealing and better suited the channel presentation, but the content and overall layout of the service remained the same. At the same time, the analogue service was totally redesigned to make it simpler and easier to use. In October 2006, following the re-brand of Clydern, the Clydern Text logo was removed from the digital service and replaced with the current logo. On the analogue service, all blue backgrounds were changed to red, and as with the digital service, the Clydern Text logo was replaced with the current Clydern logo, as well as modifying the header on Page 100 to include a welcome and the date. The Clydern logo was later replaced with the new Clydern Text logo on the digital service.

Technology
The analogue service uses the World System Teletext standard (orginally CEPT1), the teletext standard used by all TV channels in Europe and most other PAL countries. Like all teletext systems, text and simple graphics are transmitted in-band with the actual picture signal, and decoded by the the viewers television. The exception to this is the analogue service transmitted on digital platforms, which is transmitted alongside the video stream as a DVB-TXT stream, that is then inserted in-band with the picture by a compatible set-top box. Almost all televisions now sold in the United Kingdom come equipped with the decoder hardware.

The digital service on Freeview and Freesat uses the MHEG-5 standard, the standard used for all digital text transmissions on Freesat and Digital Terrestrial in the UK. Almost all Digital Terrestrial receivers sold in the UK include the firmware to decode and display MHEG-5 data, many of which are updated over-the-air as newer versions of MHEG-5 are released. On Sky, the OpenTV platform is used for the digital service, as with all other digital teletext and interactive services on the platform. All Sky Digiboxes include the OpenTV firmware to decode and display the service.

Magazines

 * 100-199: Six News, Sports, Weather and Traffic (National and Local)
 * 200-299: Entertainment News and Gossip (including a Soaps Spoilers magazine)
 * 300-350: Business and Finance News and Information
 * 350-399: TV and Radio Listings
 * 400-449: Leisure (inclusing horoscopes, charts, music, lottery, games, top websites and things to do)
 * 450-499: What's On (inclusing cinema, theatre and local events)
 * 500-549: Holidays
 * 550-599: Clydern Community Action
 * 600-699: Help and Information (including A-Z Listings)
 * 700-799: Advertising

Analogue Only

 * 284: Digital UK Switchover Aerial Test
 * 888: English Subtitles (including English translations of some Gaelic programming)
 * 889: Gaelic Subtitles (Gaelic programming and translations of some English programming)

Digital Only

 * 1000-1999: Video multi-screens (page number after the first 1 corresponds with the page number of the content - Sky Only)
 * 2000-2999: Dating and Personals
 * 3000-3999: Childrens stories, cartoons, birthdays, jokes, submissions and games
 * 4000-4999: Interactive Digital Games (compliments the games section of the Leisure magazine from the analogue service)