[dtgriscom]

Nope. If you're trying to recover bits from a signal which is either high or low, and the signal stays high for a long time, unless your clocks are perfect (they won't be) you won't be able to tell just how many bits were in that long period of "high"s.

[hun3]

You're generally right, but I wasn't talking about the length of signals.

I was talking about if long period of "high" can be distinguished from long period of "low"--DC offsets.