The "digital tick" logo certifies products and services that are designed to continue working after digital switchover.

For a digital TV product this means:

• SDTV services and radio services
• Access to interactive services

Freeview logo means the product can receive digital services from the Freeview platform.

• DVB-T SD MPEG-2 video
• Radio Services
• MHEG-5 (interactivity)
• DTG D-Book support

Freeview + is a Freeview Digital TV recorder. This builds on the Freeview requirements to allow features such as recording a series and recording the same programme at a different time or channel to avoid recording conflicts.

As Freeview plus:

• 8-day EPG
• Accurate recording and schedule tracking
• Split events and series recording
• Alternate instances and conflict handling

Freeview HD logo is for a product that is capable of receiving the free HD and SD services on terrestrial broadcasts.

Freeview support plus:

• DVB-T2
• HD H.264 video with Dolby Digital and HE-AAC audio
• HD MHEG interactivity

Freeview + HD is the logo for a Freeview Digital TV Recorder that is capable of receiving the free HD and SD services on terrestrial broadcasts.

As Freeview HD plus features from Freeview +

freesat logo means that the product can receive digital services from freesat, a free to air satellite service in the UK.

• DVB-S SD MPEG-2 services
• FTA Radio services
• Enhanced EPG
• MHEG-5 (interactivity) with enhancements

freesat HD logo included the ability to receive FTA HD services.

freesat support plus:

• DVB-S2 HD H.264 services
• MHEG interactivity with HD extensions

freesat+ logo is for a freesat Digital TV Recorder, capable of receiving and recording services on the Freesat platform.

As freesat plus:

• Accurate recording and schedule tracking
• Split events and series recording
• Alternate instances and conflict handling

EICTA HD Ready Logo means that the TV/display is ready to display an HD picture from an external HD source, such as a Blu-Ray player, Playstation 3 or Sky HD.

Display with a minimum 720 physical lines in 16:9 aspect ratio and DVI or HDMI inputs which supports HDCP (copy protection).

It must accept both 720p50 and 1080i25 sources.

EICTA HD Ready 1080p logo is the same as HD Ready but the display has 1080 physical lines

As HD Ready plus:

• 1080 physical lines
• Must accept 1080p24 and 1080p50 sources

****NOT RELEVANT TO UK****
EICTA HDTV logo to show product is capable of receiving HD broadcasts. This is not necessarily true in the UK!

• DVB-S2 or DVB-T or DVB-C
• MPEG-2 decoding, H.264 decoding up to 1080i25.
• Dolby Digital or HE-AAC decoding

****NOT RELEVANT TO UK****
EICTA HDTV 1080p logo which is the same as HDTV but with 1080 lines on a display. This does not necessarily support HD broadcasts in the UK.

As HDTV but only for displays plus:

• 1080 physical lines
• Must accept 1080p24 and 1080p50 sources

Various manufacturer specific logos with similar features to HD Ready 1080p.

No guaranteed specification

Various manufacturer specific logos for displays that claim better motion portrayal of video by running at 100Hz.

Frame interpolation is required to generate intermediate frames. This can never be perfect as the intermediate frames did not exist at the source.

This logo informs a support for input or output of 1080p24 without conversion.

1080 lines make up the TV picture (Frame). Alternate lines are captured at different times (fields) and are interlaced together. Field rate of images is 50Hz which then has to be de-interlaced to make a progressive image for almost all flat panel displays. Format regularly used for sport.

Resolution is 1080 lines for static images but as low as 540 lines for fast movement. There are 1920 horizontal square pixels in the frame but they can be compressed to anamorphic (non-square) pixels at 1440 or 1280 resolutions. Poor de-interlacing results in jagged edges on moving objects.

720 lines make up the TV picture (Frame). Every line is scanned progressively 50 times per second. This format is better for sport but has not been widely adopted.

Resolution is always 720 lines, even with motion. There are 1280 horizontal square pixels in the frame but they can be progressed to anamorphic pixels at 960 resolution. Simple linear scaling is needed to fill the display

Cinema is traditionally 24 frames per second. This native cinema resolution is often found on Blu-Ray DVDs. To avoid flicker, each frame is shown twice but is often converted to a higher frame rate for displays.

Native 24Hz can sometimes be passed from the source to the display but somewhere frame interpolation is needed to avoid flicker. This can be 48Hz doubling or interpolation to 50Hz or even 100 Hz.

In Europe, movies for TV are often sped up from 24Hz to 25Hz for compatibility with TVs. This progressive TV format at 25 frames per second is often used for natural history and drama.

1080 lines of resolution scanned progressively 50 times per second. Best for resolution and motion portrayal. Production format is not yet widely used but will be in the future. This is the native format of many new flat panel displays.

Most 1080 line flat panel displays are progressive so need this format on the screen. Either the display converts the other formats to this internally or an external device (such as Blu-Ray) can convert to 1080p50. Different quality can be achieved by allowing different products to do the conversion.