What is Biphase/RC5?=20

I have been working on a program that records and retransmits IR =
commands after recieving the respective RF command on 16f628. (The IR =
part is finally working well in 'Mode1' which will capture any command =
that has a max of 80 pulse and a max pulse width of 1.2 secs. Mode2 will =
have a max of 160 pulses with a max pulse width of 6.7mS other Modes =
will have a variation on resolution)

The next part is to decode a signal from a mc14496 keyboard decoder that =
transmits via RF 304Mhz TX/RX pair.  The wave form looks like this
|AGC|   STRT|   fff|fff   |fff   |fff  =20

AGC =3D AGC burst
STRT =3D Start bit
fff =3D freq 28khz
|   fff| is a 1
|fff   | is a 0

If this is biphase coding then I have successful decoded this using a =
HC11 and about to port it to 16f628 using input/output capture and you =
are welcome to the code (and the ported code when I am done) and an =
explanation of how I decoded it.  May not be the best solution (or RC5) =
but it worked well in a noisy environment were I could detect false =
triggers.

Let me know.

Justin

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