6 Jul
2000
6 Jul
'00
12:22 a.m.
This sounds like just the thing to do. Do you have
any references where
I could read up on this kind of algorithm? I've never studied signal
processing -- I have a mathematics and computer science background, not
engineering -- so I've been working by intuition up to this point.
(Hmm, looking at Tim Shoppa's later response gives me the keywords "partial
response maximum likelihood" to look for. That should help.)
Tim's reference is a very good one for this. It should also lead to a few
others that will help directly. He's certainly knowledgable on this.
a clock violation, and in that case backtrack to a
recent past decision
where the second most likely alternative was close to the most likely,
try it the other way, and see if the result looks better. Obviously one
can't overdo that or you'll just generate random data with a CRC that
matches by chance, but since the CRC is 16 bits, I'd think it should be
OK to try a few different likely guesses to get it to match.
This is a possible way to approach it. Also it would allow extracting
data from a floppy that was stapled to the wall!
Allison