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IV. Set-Up-Box (STB)<br />
1. The Linux4.TV Set-Top Box Open Source <strong>Project</strong><br />
Linux4.TV is a open-source set-top box platform with support for video on demand, DVB<br />
and video streaming.<br />
System Architecture<br />
Linux4.TV <strong>Project</strong> uses the National's Geode SP1SC10 demonstration platform as the<br />
hardware for the first implementation.<br />
Geode SP1SC10 technical specifications:<br />
� CPU SC1200 – 266MHz<br />
o x86-compatible 32-bit instruction set<br />
o MMX support<br />
o 2-D graphics acceleration<br />
o integrated NTSC/PAL controller<br />
o CCIR-656-compatible video input port for full-screen video display<br />
� Philips SAA7114 chip for input decoding<br />
� Sigma Designs EM8400 chip for real-time hardware decoding of MPEG-2 digital<br />
video streams<br />
This system design allows video inputs to be decoded and routed into the video input of<br />
the CPU so that to combine in real time browsers and other application’s graphics data<br />
output with the desired video. This architecture allows also applications to be integrated<br />
with few, if any, modifications so that working with the video subsystem.<br />
- Geode STB <strong>Platform</strong> Architecture -<br />
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