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From: Don Y <blockedofcourse@foo.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Ir remotes
Date: Mon, 20 May 2024 00:15:52 -0700
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On 5/20/2024 12:01 AM, Don Y wrote:
> My understanding is that Ir remotes modulate an Ir "carrier" signal
> in a particular pattern to express a particular "code" corresponding to
> the key pressed/held.
> 
> And, that different "chipsets" use different carriers and encodings.
> 
> Is there a front-end that is tuned to the particular carrier
> in the receiver?  Or, is all of this done "digitally"?
> 
> I.e., with a fast-enough (Ir) photodetector, should I be able to
> decode ANY signal from ANY "remote"?

And, before anyone mentions the obvious, I've already looked at lircd
which is the reason behind this post; why do they claim they can handle
ALMOST all remotes?  Is this a limitation of their hardware implementation?
Or, timing problems in the way they try to process the raw video signal?