In the TV series Stargate SG-1 and Stargate Atlantis we see both the Ancients and Asgard using both holographic projection and beaming technology. Which race, Asgard or Ancients invented the holographic projection tech and the beaming tech? Given that the Ancients were a much older race did the Ancients invent both techs and gave both to the Asgard who used and improved both techs?
We don’t know for sure as it is never explicitly stated on the show to the best of my knowledge, however the most likely assumption would be the Ancients developed it first based on a comment from the Asgard’s:
You cannot even begin to comprehend the extent of what was unfolding in O'Neill's mind. Our scientists, long ago, extracted parts of the Ancient library of knowledge and learned much from it. But we have been studying it for as long as I can remember, and we have barely scratched the surface.
Source: The wonderful episode The fifth race.
Simple answer is the Ancients, because they’re the perfect, all-knowing race in the series.
But the beaming technology of the Asgard is different from the Ancients'. If I am not mistaken the Goa'uld stole Ancients beaming technology and it's the rings.
- So maybe they both developed those ideas.
- Maybe they traded the technology.