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From: Don Y <blockedofcourse@foo.invalid>
Newsgroups: sci.electronics.design
Subject: Ir remotes
Date: Mon, 20 May 2024 00:01:18 -0700
Organization: A noiseless patient Spider
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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"?

Said another way, is the fact that a particular device ONLY
recognizes a particular remote related to its use of a particular
chipset (or, equivalently, decoding algorithm in software)?

[The former would be hard to change but the latter should be relatively easy]