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23Jun/097

The Sony Bravia LCD TVs run Linux

Posted by Avinash Meetoo

20090623-sony-bravia

How many of you would like to get an LCD TV for Christmas? A lot, I bet. How many of you know that the Sony Bravia LCD TVs are powered by Linux? A lot fewer, I guess.

LCD TVs have a lot of pixels. When displaying a normal-resolution programme (say from the MBC), the TV must use extremely complex image processing algorithms to generate the missing pixels. For example:

  • SECAM @ 720 x 576 = 414,720 pixels every 1/25 of a second (I'm simplifying...)
  • HDTV @ 1920 x 1080 = 2,073,600 pixels every 1/25 of a second

So the TV must digitally create 5 times as many pixels as in the original frame 25 times per second. As you can easily guess, this requires a lot of horsepower hence the use of a powerful computer inside the TV. Sony has chosen Linux to power that computer (specifically Linux kernel 2.6.11)

For the more curious, have a look at http://products.sel.sony.com/opensource/source_tv.shtml