Converting IR Modulated Signal Data

[lylemix]

Using RedRat, Ira.. or other IR reader device, I can capture the modulated signal data. Is there a referece somewhere on how that data is converted into JP1 codes?

Here is sample data on the capture of a key press.

Code: Select all

  <?xml version="1.0" encoding="utf-8" ?> 
- <IRPacket xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="RedRat3ModulatedSignal">
  <UID>lGWguoMqLUGdluVwMPo0WQ==</UID> 
  <ModulationFreq>38095</ModulationFreq> 
- <Lengths>
  <double>8.908</double> 
  <double>4.492</double> 
  <double>0.49</double> 
  <double>2.2495000000000003</double> 
  </Lengths>
  <SigData>AAECAQIDAgMCAwIDAgMCAwIDAgMCAwIDAgMCAQIBAgECAQJ/AAMCfw==</SigData> 
  <NoRepeats>5</NoRepeats> 
  <IntraSigPause>30.912499999999998</IntraSigPause> 
  <ToggleData /> 
  </IRPacket>

Thanks.

[johnsfine]

There is almost enough data there for me to figure it out, but not quite.

If I saw that format for a few known signals, rather than one unlnown signal, I could probably figure it out, then apply that understanding to unknown signals.

What resources do you have for controlled testing? Your thread in 2003 says you had a Millenium 4 with JP1 cable.

I assume you can capture signals from one or more common UEI setup codes as "known signals".

Almost all UEI remotes include TV/0156. That has timing similar to the signal you posted above, and its signals are easy to recognise, so I often use it as the first experiment for deducing an IR format.

[The Robman]

I don't think that any of the experts here has seen that format before, but we can probably decode it if you provide more information. One sample isn't enough for us to make any concrete assumptions, we would need a larger sample of the data (10 buttons or more). Plus, it would help if we knew what remote you were learning the data from. Ideally, it should be a remote which we already know the information for.