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  1. #1
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    Default UK broadcasters join forces in DTT high definition trial


    BBC, ITV, Channel 4 and Five have joined forces to launch the UK's first high definition (HD) trial broadcasts to terrestrial aerials. A specially selected 450-strong audience sample collect their trial HD set top boxes this week (beginning 5 June 2006) for the closed technical digital terrestrial television (DTT) technical trial which is due to last six months.

    The trial will offer participating broadcasters and their technical partners valuable lessons about delivering HD broadcasts on a digital terrestrial network and also research how the audience enjoys this new format. It will help to discover whether there could be HD broadcasts on Freeview in future.

    The trial is being conducted under an Ofcom licence which strictly limits the number of receivers and forbids reception of the trial stream by general members of the public. Humax and ADB (Advanced Digital Broadcast) have supplied the HD set top boxes for the trial.

    The DTT HD trial consists of low power transmissions from Crystal Palace in London on frequencies that are not suitable for high power broadcasting. National Grid Wireless (NGW) is transmitting the BBC's HD stream, which went on air last month, and Red Bee Media provides play-out services.

    Arqiva is transmitting the multiplex shared by ITV, Channel 4 and Five, with Grass Valley, a business within Thomson, providing broadcast playout and video encoding equipment. Siemens Business Services is providing technical support for the BBC's HD trial.

    The test broadcasts will use MPEG4 video coding, 8K carriers and 64QAM modulation at launch – different parameters may be tested during the trial period.

    Research company TNS Media is conducting the panel research. The audience panel was selected from online volunteers who registered on a website in April. All had existing HD Ready television sets and will be supplied with special DTT HD set top boxes.
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    The BBC has launched the UK's first high-definition (HD) trial transmissions to digital terrestrial television sets (DTT), in partnership with rival broadcasters ITV, Channel 4 and Five.

    A specially selected sample audience of 450 households in the London area will be fitted with HD set-top boxes—provided by Advanced Digital Broadcast and Humax, suppliers of digital TV systems—to take part in the closed technical test that is scheduled to last six months.

    The trial—which comes only weeks after the BBC published the findings of a survey showing overwhelming support for the corporation's HDTV channels to be available on all digital television platforms—is intended to offer all four participating broadcasters and their technical partners information about the complexities of delivering HD broadcasts on a DTT network. It also hopes to explain how viewers use and react to the state-of-the-art format.

    The sample audience will have access to the summer's key sporting events, including the FIFA World Cup and the Wimbledon Championships, as well as homemade and imported drama series, classic movies and documentaries from all four of the UK's terrestrial TV broadcasters.

    The trial consists of low power transmissions from Crystal Palace in London on frequencies that are not suitable for high-power broadcasting, and it is being conducted under an Ofcom licence that strictly limits the number of receivers and forbids reception of the trial stream by general members of the public.

    National Grid Wireless, a provider of terrestrial infrastructure for the transmission of analogue and digital TV broadcasts, will be transmitting the BBC's HD stream, which went on air last month, while Red Bee Media, formerly known as BBC Broadcast, is providing play-out services. Siemens Business Services is providing technical support.

    The multiplex shared by ITV, Channel 4 and Five will be transmitted by broadcast solutions provider Arqiva, with Grass Valley, part of film and video technology supplier Thomson Multimedia, handling broadcast play-out and video encoding equipment.
    Salut Prieteni!


 

 

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