Eugen Leitl wrote:
Hi -- a couple somewhat lunatic questions. Figured this would
be the best place to ask.
Anyone aware of a time standard which compensates in regards
to an ideal flat-spacetime-at-rest-relatively-to-cosmic-background
reference clock? I realize this is not relevant for any affordable
clocks.
Unrelated, anyone aware of a hardware (IC) counter which
counts in a (local-bitflip) Gray code, so it can track a very
fast (integrated?) oscillator without dropping cycles?
Any synchronous counter won't drop cycles, right? only ripple carry
asynchronous have the propagation delay problem.
However, since long synchronous counters are complex, another way to do
it is with a linear feedback shift register (LFSR). Rather than doing
it as usually drawn, with taps all getting xored to generate the single
feedback, you do it using the output and feeding it "into" the stages
(with an Xor) where the taps are.
P.S. Thanks for pointing me towards GPSDOs. Any European/German
local alternatives to the Trimble Thunderbolt?
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