Starting this month we introduce a new series where you ask us technology related questions and if we think you deserve an answer or we have the time to respond, we will/might go ahead and answer them for you. Cos, seriously, we never asked you to send in these questions. Why the hell would you send them in the first place?
So I totally get the differences between LCDs, LEDs, Plasma, AMOLED, etc. All of that was confusing enough and it took me three different articles in different publications to understand the why these people came out with so many panels and technologies.
Now to add to the confusion they have come out with another set of acronyms - SD, HD, FULL HD, HD+ and what not!
MIND REELS! HELP! Un-confuse me!
Ok, first of all, that resolution-impaired thing makes no sense. Why wouldn’t you sign off with your real name. We are not solving erectile dysfunction related problems here, mate.
Again, why the hell did you mail us?! We never asked anyone to do so (but now totally are - we don’t have to think of topics any longer, look at the end of this article for more info).
Sigh. I blame Apple and their new ‘Resolutionary’ iPad for all this mess. Suddenly, everyone is interested in all those pixel-crammed displays and their terminologies.
Alright then, let’s start with the....
The resolution of a display is the maximum number of pixels or ‘dots’ that you can fit into it. So, you could say that the resolution is kind of like the dimensions of the display, except it’s not exactly the dimension.
So when someone says the resolution of a display is 1920x1080, that means you can put in
1920 pixels horizontally (width) and 1080 pixels vertically (height). So you get that. Right?
The Various xDs.
So what are SD, HD and any other variants that might exist? They are essentially classification of displays based on their resolution. Below is a a quick reference table :
|Standard Definition||SD||480i (720x420) and 576i (720x576)|
|Enhanced Definition||ED||480p (720x480) and 576p (720x576)|
|High Definition||HD||720p (1280x720), 1080i (1920x1080) and 1080p (1920x1080)|
Note : Screens in the market are further differentiated into HD Ready, HD and Full HD. While HD Ready may not even have a resolution of 720p (but is capable of handling those signals), Full HD displays have a of 1080p.
What’s with the ‘p’ and the ‘i’
You would have noticed the suffixes in the resolutions mentioned up top, right? ‘p’ out there stands for progressive scan, while ‘i’ stands for interlaced video. The difference between the two? Let’s not go down that road, son. That’s some complicated shit.