HD TV Info

There are several mis-conceived statements surrounding what HDTV actually is - the most common one being that DTV [Digital Television] is HDTV [High Definition Television]. WRONG.


Let us first commence and verify that by just receiving a digital transmission into a Digital TV is NOT HD [High Definition]. 
There are several benefits to Digital TV which are explained on this link -  http://www.digitaluk.co.uk/en/why.html
 

However, the High Definition transmission is a Digital signal and as such the TV has to be able to decode the Digital HD signal to reproduce true HD.

 

Transmissions of HIGH DEFINITION programming are  currently available via SKYHD, FREESAT and Blu-ray Discs.

 

The HD picture transmitted, whether by satellite or Blu-ray Disc player must be received by a High Definition ready digital TV to enable TRUE High Definition.

It was established a few years ago that televisions were labeled to provide consumers the knowledge their purchase was HD ready.


A “HD ready” label was introduced as a quality sign for the differentiation of display equipment, capable of the actual processing and displaying of high definition signals, awarded on the basis minimum functionality requirements detailed in the “EICTA Conditions for HD Labelling of Display Devices.”


In addition to providing guidance for the retailers and consumers, the label should restrict misuse in brochures, promotional material and advertisements often inferring suitability to process and display HD signals as standard TV or digital TV sets have HD capability feature.

The label “HD ready” is awarded to display equipment capable of presenting HD sources with a much higher resolution than standard PAL (576i) and meeting all the requirements detailed below.

TECHNICAL BITS

As laid down by the EITC, a display device (PDP, LCD, DLP™, etc.) has to cover the following requirements to be awarded the label “HD ready”:

1. Display – Display Engine- The minimum native resolution of the display (e.g. PDP, LCD) or display engine (e.g. DLP™) is 720 physical lines in wide aspect ratio.

2. Video InterfacesThe display device accepts HD input via:
- Analogue YPbPr¹ - and
- DVI or HDMI

HD capable inputs accept the following HD video formats:
- 1280 x 720 @ 50 and 50Hz progressive (720p) – and
- 1920 x 1080 @ 50 and 60Hz interlaced (1080i)

The DVI or HDMI input supports content protection (HDCP)

 

 

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¹ “HD ready” display devices support analogue 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 device or through an adaptor easily accessible to the consumer.

DLP™ (Digital Light Projection) is a registered trade mark of Texas Instruments Inc., USA