Re: ATSC capture/streaming card for PC?



On Jan 22, 9:55 am, AggieSawDust <AggieSawD...@xxxxxxxxx> wrote:
Yes, they've been around for some time. But you really don't want one.
Search the web and you can find them. But I doubt you can afford one.

1 - 10 of about 20,900 for 8vsb modulator

http://www.advanceddigital.ca/products/dvb/tvb590.php

Thanks for all the responses.  I was already thinking that new PC
hardware will definitely be the most economical way to go.  However,
this could also turn into a fun project.  The way I look at this, the
incoming signal is already correctly modulated.  If all I'm doing is
writing that modulated stream of bits to disk, I could output that
same, unmodified, signal stream at a later time (time shifted) through
an RG6 connection.  I wouldn't need to purchase modulating hardware
(since the signal is already modulated right?), just something that I
could pass that same digital stream out through to get to my TV.

Anyway, thanks again for the input.

The incoming ATSC signal rides on a UHF carrier frequency which the
tuner removes and the computer never sees. The MPEG2 data stream saved
to disk is at baseband, not UHF, and the TV's antenna input can't use
it unless it's modulated back onto an RF carrier frequency. The TV's
other inputs (HDMI, S-Video, component, etc) are closer to what the
computer handles.

I put together a minimal cheap HD system from an old 2.2GHz Dell
Dimension 2400 and a Hauppauge WinTV-HVR950 USB tuner. It will record
and play back HDTV on the 15" monitor and has a pause mode with the
delayed playback function you asked for. It isn't a -good- system but
it does work, most of the time.

Jim Wilkins
.



Relevant Pages

  • Re: ATSC capture/streaming card for PC?
    ... signal stream at a later time through an RG6 ... I wouldn't need to purchase modulating hardware (since the ... To transmit again you'll need something to do that. ...
    (alt.tv.tech.hdtv)
  • Re: The PERFECT EQUATION = LOSSLESS COMPRESSION!!!! TRUE!!!!
    ... stream) when modulated makes it into a carrier stream, ... random with a 50:50 entropy then modulating it would create 50% more ... so it would now have a 3:2 bias. ... but I can get a couple friends from europe to ...
    (comp.compression)
  • Re: ATSC capture/streaming card for PC?
    ... But I doubt you can afford one. ... same, unmodified, signal stream at a later time through ... I wouldn't need to purchase modulating hardware ...
    (alt.tv.tech.hdtv)
  • Re: Relationship between filter roll off and response time
    ... contain the carrier frequency and upper and lower sidebands separated ... from the carrier frequency by the modulating frequency. ... If the modulating waveform is a pure sinusoid, ...
    (sci.electronics.design)
  • Re: Algorithms to modulate a signal in FM ?
    ... matrixes to modulate the output. ... The modulating input should be arround 3 Khz sampled at 12 bits. ... each iteration on the carrier frequency, you then use a 2nd matrix ...
    (comp.dsp)