Geek Guide: Glossary Of Terms Part 1 – TV’s

We realise that sometimes when you come to buy a new piece of technology that it is really easy to get lost with some of the lingo used in this day and age, especially if you’re not part of the Technorati or ‘geek squad’.  SO Electrical-Deals have decided to create a glossary of terms to tell you exactly what those funny terms in the specification mean.

Aspect Ratio: The aspect ratio refers to the screen size in a ratio format.  The format is measured by two numbers that represent the width and the height, represented by W:H.  TV’s these days are 16:9 (widescreen) the older style big backed TV’s (CRT’s) were a 4:3 ratio.

Brightness: If you see a specification for brightness this refers to funnily enough how bright the screen can go, or more specifically, the power of the tv to display a bright picture.  This has nothing to do with the internal settings of the TV, all TV’s can have brightness adjusted through the menu’s.  Brightness is measured is cdM/2 which is Candela per squared metre.  The higher number the brighter the set.  A normal brightness is around the 400-500 cd/M2

TV's Brightness

Contrast Ratio: This is now usually referred to as ‘Dynamic Contrast Ratio’ and similarly to aspect ratio this is represented by two numbers set out in a ratio format.  The contrast ratio tells you the difference between the brightest white and the darkest black on the screen at anyone time.  So a ratio of 50,000:1 is telling you, the TV can display a White 50,000 times brighter than the darkest black.  The higher the number the better, but this shouldnt be a deal clincher for any TV purchase.  Different manufacturers measure this differently so what might be a 20,000:1 on a LG might be a 50,000:1 on a Sony etc

Digital (Freeview): In the UK I’m sure everyone has heard of the ‘digital switchover’ and this has been the cause of much confusion for many across the UK.  Digital and Freeview are the same thing with regards to a TV.  If a TV is digital then it has Freeview built-in, and if the TV is advertised as Freeview then it had a digital tuner.  Every TV that you can buy these days hs Freeview built-in.

DLNA: DLNA stands for the Digital Living Network Alliance.  This means as long as you have a home network and you have several products that are DLNA certified then you can do lots of clever things by getting the units to talk with each other, involving listening to music and watching films.  For a full detailed explanation of what the DLNA can do please visit there website here.

EPG: EPG stands for Electronic Programme Guide.  This is the menu within your TV which lets you know the TV schedule usually about 7 or 8 days in advance.

HD: HD stands for High Definition and there are two main types of HD.  HD Ready TV’s mean that the resolution outputs over 720p but under 1080p.  The most common HD ready resolution is 1366 x 768p.  Full HD is the maximum resolution possible which is 1920 x 1080p.  It is worth noting to get a Full HD picture you will need either a Blu-Ray Player or a Next Gen Games Console.  Even Virgin and Sky HD do not output at 1080p.

Internet TV: This is a misleading one.  Internet TV doesn’t mean you can browse Facebook and complete Google searches like you can on your computer.  Internet TV is very limited as to what you can actually watch.  Most Internet TV’s are compatible with just YouTube and BBC iPlayer. You can connect usually via wired ethernet cable however if you want to connect wirelessly you will need to buy a manufacturer model WiFi dongle)

3D TV

3D: 3D is to a degree self-explanatory a 3D tv allows you to watch 3D content usually through a 3D Blu-Ray player or Sky 3D channel.  With the aid of some ultra stylish glasses this will allow you to see a 3D picture.  What is lesser know is there are two types of 3D tv’s.  Those with 2D conversion and those without.  Those with the converter will allow you to ‘simulate 3D from any normal 2D source, those without the converter can only watch 3D content that was designed to be shown in 3D.

If you feel we have missed something out leave us a comment below and we will write you a definition for any of those confusing terms.  Coming soon we will have one for Laptops and Computers.

Kind Regards

-The Electrical-Deals Team

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About Dave Furness

I am a fun loving guy who enjoys his job and is driven to succeed. I currently manage a couple of blogs, one for electrical-deals and another personal one documenting my advice, tips, tricks and pitfalls of web design and e-commerce.
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5 Responses to Geek Guide: Glossary Of Terms Part 1 – TV’s

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    • Hi Suzanne

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