Video Technologies Explained

Posted by admin on Nov 16, 2007

There are lots of different types of electronic screens on the market today, and it is really hard to figure out what they are all about.  Here is a small explanation of them.

Cathode Ray Tube technology has been used since the very first TVs.  It basically uses three tubes beside each other (red, blue, green), to create an image that is ‘fired’ onto a glass screen.  The cathode or ‘gun’ fires an invisible electron beam at coloured phosphors that are on the glass screen.  These phosphors glow in their respective colour (red, blue, green) to produce the picture.  These displays are inexpensive, very reliable, and have the best colour reproduction.  The problem is that they are big and heavy, and consume a large amount of electricity.

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