On Tue, 19 Jul 2016, Mark Green wrote: > I don't know a lot about data transmission, my main application is > display.
Thanks anyway for the informed reply. Do you happen to know the best place to view large format holograms? I'm just looking for your personal opinion, since you seem to be in the know about such things. I've been fascinated with holograms since I was a kid (ie.. the National Geographic comment). > The mathematics behind data transmission and display are similar, they > are based on wave propagation and diffraction and lots of Fourier > transforms. FFT is a wonderful and amazing algorithm. It's akin to Diffie-Hellman in it's magicalness, to me. Without it, imagine how poor (or non-existent) some technologies would be! > The laser power is not overly important, it's the resolution of > diffraction pattern or hologram that you produce. It's a very redundant > coding scheme, so part of the signal can be lost and you can still > recover all the information. Hmm, I'm guessing holograms have their own redundancy methods. I've seen Reed-Solomon matrices for such things, but that's the only one I know about. People write their Ph.D thesis on such things, so I'm not even a hobbyist, just an admirer of such tech. -Swift
