4 Nov
2022
4 Nov
'22
2:02 a.m.
On Thu, 3 Nov 2022, Fred Cisin wrote:
On Thu, 3 Nov 2022, Grant Taylor via cctalk wrote:
[...]
Please expand "GCR".
Sure, . . . (GROSSLY OVER-SIMPLIFIED, such as "pulse" instead of flux
transition)
FM is "frequency modulated". Well, it is actually a regular clock pulse,
MFM is "Modified Frequency Modulated".
Clock pulses really aren't necessary
[...]
And to shorten the discussion: *all* of them boil down to a form of RLL
(run-lenth-limited) encoding.
Christian