Slashdot Mirror

← Back to Stories (view on slashdot.org)

Digital TV Transmitter Using a VGA card

Posted by ryuzaki0 on from the useful-reuse dept.

An anonymous reader writes "Yet Another Project from Fabrice Bellard : with any PC and a standard VGA card, you can build a real Analog or DVB-T Digital TV transmitter by directly generating the VHF signal. The provided example shows a Lena picture transmitted as a real Digital TV channel."

5 of 187 comments (clear)

  1. crap .. by macaulay805 · · Score: 3, Informative

    I clicked on the link while I was at work, now I'm waiting for the network security people to remove me from my workstation.

    On a side note: WARNINGS PLEASE!

  2. Re:Has been done with music for a while by Rei · · Score: 4, Informative

    You're talking about Tempest For Eliza". I never got the "broadcast an mp3" function to work, however - only the broadcast using their special midi-like files. A shame, really. Still, even the midi-like broadcasts make for a neat geeky party trick, and demonstrate the power of tempest ;)

    --
    "This wallpaper is killing me. One of us has got to go." -- Oscar Wilde on his deathbed
  3. Re:Now lets get some NTSC by b1t+r0t · · Score: 3, Informative

    Oh gee whiz... I think I figured it out now. What he did was make a grayscale image that resulted in a signal which was equivalent the unmodulated data stream. So the VGA card was esentially being used as an enormous shift register. In that case, it would definitely take some work (and an 8VSB modulator) to make it generate ATSC.

    --

    --
    "Open source is good." - Steve Jobs
    "Open source is evil." - Microsoft
  4. Re:Guys, this is no small feat by Anonymous Coward · · Score: 3, Informative

    It's not realtime. He's rendering to a PGM file, and then by displaying it. Not easy, but it's not a replacement for custom hardware.

  5. Re:The Lenna Story. by kureido · · Score: 3, Informative

    Lenna is one of the many "standardized" images used in image processing research, akin to the well-understood strains of Norway rats used by medical researchers all over the world so that their peers can reproduce their experiments. For more examples of standard research images, see the USC-SIPI image database.