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Multimedia Home Platform (DVB-MHP) is an open middleware system standard designed by the DVB project for interactive digital television. The MHP enables the reception and execution of interactive, Java-based applications on a TV-set. Interactive TV applications can be delivered over the broadcast channel, together with audio and video streams. These applications can be for example information services, games, interactive voting, e-mail, SMS or shopping. MHP applications can use an additional return channel that has to support IP. == Deployment == In May 2010 the largest deployments DVB-MHP are in Italy (DVB-T), Korea (DVB-S), Belgium (DVB-C) and Poland (DVB-S) with trials or small deployments in Germany, Spain, Austria, Colombia, Uruguay and Australia. MHP service was also offered in Finland by Finnish Broadcating Corporation (Yleisradio), but the service was shut down at the end of 2007 after technical failure. The shutdown wasn't ever officially announced. Ultimately the reason for the shutdown was that MHP never gained "critical mass".〔() Talouselämä 1.2.2008, Petteri Järvisen kolumni Sinullekin oma tv-kanava〕 The main reasons for its lack of success in Finland were: 1) 50% of the Finnish households use the terrestrial network, where broadcasting of MHP applications can be really expensive, 2) TV broadcasters never told TV viewers about the MHP services—because the digitalization of the TV networks got extremely negative publicity in Finnish media, the broadcasters didn't want to upset their customers further if they had bought new expensive STBs which weren't capable of playing MHP apps, and 3) there were only a few MHP set-top boxes in the market—because Finland is such a small market, big manufacturers weren't interested in developing new MHP boxes just for Finland. MHP-capable STBs are no longer available in Finland. The U.S. cable industry has specified its own middleware system referred as OCAP, which is largely based on MHP. Currently, Belgium's largest cable provider Telenet is rolling out their DVB-MHP system, called DigiBox. Norway's upcoming terrestrial digital TV network NTV will also use the DVB-MHP standard.〔(Official website for DVB-MHP and DVB-GEM - Open Middleware for Interactive TV )〕 In late 2008 the Info+ channel in Greece (part of the ERT Digital platform) started broadcasting DVB-MHP info,〔(info+ ΜΙΑ ΤΕΡΑΣΤΙΑ ΒΑΣΗ ΔΕΔΟΜΕΝΩΝ ΜΕ ΤΟ ΠΑΤΗΜΑ ΕΝΟΣ ΠΛΗΚΤΡΟΥ ) (in greek)〕 however since standards have not been set as of February 2009 for digital television in Greece, most TV sets and DVB-T receivers sold in the country do not feature DVB-MHP.〔(ERT Info+ ) FullHD.gr (in greek)〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Multimedia Home Platform」の詳細全文を読む スポンサード リンク
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