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ALL ABOUT EDID WITH AVPRO
Posted on Friday, January 29, 2021
ALL ABOUT EDID WITH AVPRO

EDID is a term that you have likely seen or heard if you have been in the audio video industry for a while. Like HDCP (High-Bandwidth Digital Content Protection) it is commonly attributed to undesirable audio and video outputs.

So, what is EDID and why is it used?

Let’s start with some EDID history. Extended Display Identification Data (EDID) was introduced by the Video Electronics Standards Association (VESA) in August of 1994 with release of EDID v1.0. A few updates later and in September of 2000 VESA introduced Enhanced – EDID (E-EDID) v1.0, and as part of the new specification was EDID v1.3. The next, and latest, update was released in 2006 when we received E-EDID v2.0, and EDID v1.4. This is the current version of EDID that is used today.


Now that you know when it came out, we will explain what EDID is and why we need it. 

EDID is a message of information that comes from your output device that explains to your audio video equipment how to setup your audio and video signals. This message includes many specific technical settings and parameters that can precisely portray all supported signal formats. This is important so that your computer, Blu-Ray player, game console, audio receiver, or other devices that will send or repeat a signal (we refer to these devices as “source” devices) knows what type of signals are valid and will work with your output devices, which may include a TV, monitor, soundbar, or audio video input (we refer to these devices as “sink” devices). Without EDID you would have to make sure to set these devices manually, and if you messed up the settings you would not have a visible picture or sound may not be coming through to your devices. EDID set out to make installation of devices easier and allow easy changing of devices around a time when computers were now becoming more mobile. 

Now that we know a little about what EDID is and why we have it, what does an EDID message look like? I will forewarn you; it can be a little intimidating to understand at first, but AVPro is here to help make you more knowledgeable and make more technical features easy to understand and use.
 
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