Re: Open hardware AV to digital conversion

From: Chris Osborn <fozztexx_at_fozztexx.com>
Date: Sun, 4 Jan 2015 12:02:39 -0800
Message-Id: <DC87CBC9-7C52-49A4-9100-F78FFADC3351@fozztexx.com>
Have you guys seen this project from the TRS-80 CoCo mailing list?

https://sites.google.com/site/tandycocoloco/rgb2vga <https://sites.google.com/site/tandycocoloco/rgb2vga>

> On Jan 4, 2015, at 12:00 PM, silverdr@wfmh.org.pl wrote:
> 
> That's almost exactly what I proposed and discuss with Marko and Gerrit for some time already, but I seem to be the most enthusiastic one among us ;-)
> 
> I have a clear vision of what I want to achieve and I believe it being well achievable. In a nutshell:
> - apply all analogue patches on the VIC signal 
> - sample each line
> - apply simple digital filtering 
> - reconstruct proper, norm compliant, interlaced signal in almost real time 
> - output the signal 
> 
> This alone should increase the chances of an upscaler to catch on and output a decent DVI / HDMI well to the nineties of percents.
> 
> Once having this working well, we could add "native" HDMI encoding on board. 
> -- 
> Sent from mobile device. Please have understanding. 
> 
> On 4 January 2015 19:18:48 CET, "Michał Pleban" <lists@michau.name> wrote:
>> Hello!
>> 
>> Marko Mäkelä wrote:
>> 
>>> The most future-proof way might be to use a generic A/D converter and
>> a
>>> fast enough FPGA. 
>> 
>> What kind of processing power would be needed if we just sampled the
>> PAL/NTSC video signal with A/D and processed it in software to
>> reconstruct the video? Something like this but in real time:
>> 
>> http://www.techmind.org/vd/vidmk2.html
>> 
>> Could something like a Raspberry Pi do it? I suspect not, but maybe
>> it's
>> a route worth exploring?
>> 
>> Regards,
>> Michau.
>> 
>> 
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> 
> 
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Received on 2015-01-04 21:01:12

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