JP1 Remotes

hi .. i am wondering if there is such a thing as a program taht would read the efc or the obc code from a remote. perhaps through an ir reciever.
or what is the best way to find out the remotes codes?

i have a haeir tv and i have a maestro remote i was thinking of makign an upgrade. but i dont have the haeir codes.
any suggestions?

You might want to read the FAQ in the Code Search forum.

Hal

but wouldnt it be fun to figure out how to build a signal counter? or would u need an oscilloscope to do this?

If you have a learning JP1 remote you can transfer learned signals from that remote to the PC via JP1 cable and our software decodes (most protocols) it for you.

There have been quite a few discussions of hardware and software for receiving and decoding IR signals directly on the PC without the learning remote or JP1 cable. Several people have several different systems working. But it's never gotten the level of attention that the path through a learning remote has so (as far as I know) there is no well integrated set of hardware and software to do the job smoothly.

BTW, does your use of the word "counter" indicate some wrong assumption about IR signal structure? Otherwise I can't think what your use of that word might mean (though I get the basic idea of your request as I discussed above).

i guess we can think of the learning remote as a device that can show us the remote codes. cheeper than anything else anyways.

yes i have verry little understanding of the structure of ir signals. the thought was since the code is a number and the ir counte rwould count the signak strength .. i guess n ow that i think of it it makes no sense although the word "counter" with the word "ir" brings out interresting search results.

At the fundamental level, IR, as used in remote controls, is a serial bitstream of a byte vale usually representing a scan code, or a particular button, plus the device codes. How it converts the scancode,function , and or device code into a byte, and how it sends the 1s and 0s, varies amongst the protocols.

The protocols I am familar with mostly send out a trigger signal (to set the AGC on the receiver), and a bitstream, with 1s as a short signal, 0s as a long. Further into the concept, the NEC protocol sensd 32 bits, the firs 8 the device, the next 8 the complement of the device (except you can decompliment bits), the 8 after that the scan code, the 8 after that the comliment of the scancode.