HT12 & UM3750 library protocol for Arduino

Hi all!

What i want to do it's easy, exist some library for use in arduino to build a transmiter and a receiver for a remote control?, to do not use an HT12 or a UM3750 like coder&decoder.

I think this IC use MANCHESTER Coding to send data trougth a RF link (ASK) or in a IR link. :o

Best Regards
Frank