24 Mar
2005
24 Mar
'05
8:57 a.m.
On Wed, 23 Mar 2005, Eric J Korpela wrote:
I haven't had a chance to read the patent yet but this description might
be, shall we say, a "figurative" description of what's going on at the
physical level?
Everything I know so far would preclude the possibility of there being
clock bits interleaved with the data bits, as Eric confirmed. Otherwise,
there would be no point to the GCR method.
--
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There are no
clock bits. That's the whole point of GCR.
Either that or they read the patent application.... In the patent,
Woz describes the (13 sector) nybble format as being interleaved data
and clock bits, with the clock bits all set to 1. While this has a
different meaning than clock bits in an [M]FM controller, you can
still think of them as clock bits. I would assume the patent text is
an accurate description of what Woz said he designed.