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The D-Book is the UK technical specification for Digital terrestrial television (DTT). The Digital TV Group (DTG) has published and maintained the D-Book for over a decade and the specification is updated annually to keep up with the pace of development in UK DTT. The D-Book is compiled by DTG Working Groups composed of industry experts from the DTG’s staff and membership of around 150 broadcasters, manufacturers, technology providers and other organisations who continually update and peer-review the specification. Conformance to D-Book standard allows products to use the Digital Tick, Freeview, Freeview + and Freeview HDlogos. The D-Book is only available to members of the Digital TV Group. ==History== The first edition of the D-Book was written in 1996 when the current standard for terrestrial broadcasting DVB-T was new and untried. From the outset, the D-Book was an implementation guideline and referenced fundamental standards where possible. But many of the component parts of the document had not then achieved stable international standards and the UK implementation was therefore reproduced in full. In subsequent editions, it has become possible to reference ETSI or other standards and the previous D-Book section simplified. However, the D-Book as an implementation guideline has become more important as non-UK based manufacturers have sought to introduce products to the UK market. 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「D-book」の詳細全文を読む スポンサード リンク
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