Neolex,
I assume you are using the IRremote library by Shirriff?
I thought that gave you the details of the TV so it would say something like send then the code.
Does it give you any tv brand? I know it can flag as "unknown".
I'm making a project based on IR myself and am exploring things like this myself. So I might not be much help. But from the research I did on this method that's the information I have.