HD ready

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2004年 1月, 歐洲資訊通訊技術協會(EICTA) 宣佈了HD ready這個標準。他們提出了這標籤，是為了區別出顯示設備的品質，能夠處理和顯示高清晰度電視的訊號。

事實上，那些支援HD Ready的產品，並無必要加上這標籤。HD ready的原意，是顯示設備能夠從HD訊號上，顯示完整的影像解像度，從而展現像素較高的影像。而大部分的HD-ready的電視，都沒有足夠的解像度 (1920x1080像素或1280x720像素)，來顯示HD訊號的完整像素圖像。理論上，除了這些像素不足外，抽樣理論反映出，適當的重建濾波器需要比數碼抽樣更多的像素於螢幕上，來提供最大的銳利度，這就是為何普通清晰度的電視 (尤其是DVD)，於高清晰度電視下，看起來比起最好的普通清晰度的電視質素更為良好。That this is a consequence of basic sampling theory and not a matter of image enhancement or 'trickery' is rarely understood, even by many professionals. That aside, an HD-ready set is still likely to look very good indeed, and final picture quality can only ever be as good as the source, which is often compromised before transmission.

HD compatible (相容高清晰度電視訊號) 這標準，亦於英國所採用；這標準表示顯示設備設有HDMI功能，但畫面解像度仍然停於HD-ready的解像度。

許多電腦以及手提電腦的解像度，其實已經高於HD-ready的水平，但是除非它們同時接駁到其他設備，否則它們沒有Hd-ready的標籤資格。

任何電腦配備1280x720或更高解像度的螢幕，已經完全能夠播放HD影片，a fact not appreciated by many computer sales-people. The Internet represents a possible alternative source of HD material, as already demonstrated by 'trailers' available for free download from the Microsoft site, outside the HD-ready concept which is mostly about enforced copyright protection.

貼有“HD ready”標記的顯示產品要包含以下條件:

The HD ready logo.

顯示器和顯示引擎
- 顯示器(e.g. LCD, PDP)或顯示引擎(e.g. DLP)的最低自然解析度是在寬螢幕比例中有720條物理線.
Video Interfaces
- The display device accepts HD input via:
  - Analog YPbPr. “HD ready” displays support analog YPbPr as a HD input format to allow full compatibility with today's HD video sources in the market. Support of the YPbPr signal should be through common industry standard connectors directly on the HD ready display or through an adaptor easily accessible to the consumer; and:
- DVI or HDMI HD capable inputs accept the following HD video formats:
  - 1280x720 @ 50 and 60Hz progressive scan (“720p”)
  - 1920x1080 @ 50 and 60Hz interlaced (“1080i”)
- The DVI or HDMI input supports copy protection (HDCP)

The following technical references apply to the above descriptions:

DVI: DDWG, “DVI Visual Interface”, rev 1.0, Apr 2, 1999 as further qualified in EIA861B, “A DTV Profile for Uncompressed High Speed Digital Interfaces” May 2002, furthermore allowing both DVI-D and DVI-I connectors, requiring compliance to both 50 and 60Hz profiles, and requiring support for both 720p and 1080i video formats.

HDMI: HDMI Licensing, LLC, “High-Definition Multimedia Interface”, rev.1.1, May 20, 2004

HDCP: Intel, “High-Bandwidth Digital Content Protection System”, rev 1.1, June 9 2003.

(NB: on DVI HDCP rev 1.0 will apply)

YPbPr: EIA770.3-A, March 2000, with the notice that the connectors required may be available only through an adaptor.