Re: Difference in luma-chroma delay of C64/C128 compared to standard S-video

From: silverdr_at_wfmh.org.pl
Date: Sat, 2 Sep 2017 12:56:51 +0200
Message-Id: <9B514516-BFBD-48F7-81A2-DDC49BF28ABB@wfmh.org.pl>
> On 2017-09-02, at 01:48, Ingo Korb <ml@akana.de> wrote:
> 
> silverdr@wfmh.org.pl writes:
> 
>> Interestingly I recall some of the equipment having the adjustments
>> for chroma/luma relation in something as seemingly strange as 37ns
>> steps. No idea where it came from.
> 
> That's half of a pixel with the usual 13.5MHz BT.601 luma sampling
> frequency or a quarter of a pixel for chroma.

See? Man learns his whole life and dies dumb... Back then I used this for some good time (and it worked fine), having no idea why somebody chose that 37ns. Probably due to other inaccuracies it never came as obvious that I was shifting by half/quarter-pixels... Thank you for clearing the mystery, Ingo!

-- 
SD! - http://e4aws.silverdr.com/


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Received on 2017-09-02 11:02:39

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