Consumer IR links are generally optical, but MANY devices today have 'electrical IR' connectivity. What specifications and/or standards exist for these electrical interfaces?
I realize that a few different CIR protocols exist. And that many of these use same carrier frequency. Google is good at providing this information. But I don't immediately find specs on electrical interfaces. Items like: pin-outs, voltage levels, mod/demod. They all seem to be 3.5mm phone-plug connectors, but some look to be 3 contact and some 2 contact. Are these signals demodulated and only carry the base-band signals?
Companies like Xantech have full blown systems of IR receivers, transmitters, multiplexers, combiners, processors, etc. Are these type of devices compatible with most equipment (amps, receivers, etc.).
I see that there ARE standards on how to translate CIR to/from IP, and that Xantech has such converters. Are these others? Perhaps open source s/w?? I'm still researching but thought I'd ask here first..
It might be 'fun' to build a CIR router device on a RPi platform. It could bridge the gap between IP, CIR, electrical 'trigger' signals, etc. Just some thoughts.
I realize that a few different CIR protocols exist. And that many of these use same carrier frequency. Google is good at providing this information. But I don't immediately find specs on electrical interfaces. Items like: pin-outs, voltage levels, mod/demod. They all seem to be 3.5mm phone-plug connectors, but some look to be 3 contact and some 2 contact. Are these signals demodulated and only carry the base-band signals?
Companies like Xantech have full blown systems of IR receivers, transmitters, multiplexers, combiners, processors, etc. Are these type of devices compatible with most equipment (amps, receivers, etc.).
I see that there ARE standards on how to translate CIR to/from IP, and that Xantech has such converters. Are these others? Perhaps open source s/w?? I'm still researching but thought I'd ask here first..
It might be 'fun' to build a CIR router device on a RPi platform. It could bridge the gap between IP, CIR, electrical 'trigger' signals, etc. Just some thoughts.
