"I would like to know, who, at JEDEC claims to have invented the Rambus inventions" - Jim Rockwell
No one claims this. This is a wrong question.
All main elements of Rambus invention were invented
and made public well before Rambus, see example:
Scalable Coherent Interface, published in 1988:
slac.stanford.edu
It contains all relevant ideas about Dual Data Rate,
packet protocols, and current-steering drivers.
Control registers were invented much earlier.
Rambus combined the known techniques into a multiplexed
interconnection, with special configuration means,
called "Concurrent Rambus", or Ram-BUS-1.
No one denies this. It is important to discern
that the contemporary Rambus in Pentium-4 machines
is not the patented Rambus-1, it is very different
in its bus architecture and configuration/setup.
However, it is not quite clear who actually
invented the contemporary Rambus, or "Direct Rambus".
True, it was originally promoted by Rambus, but
with several important omissions. Currently
Intel holds a patent that seems to be closest
to current Rambus implementation:
delphion.com
US6173345:Method and apparatus for levelizing transfer delays for a channel of devices such as memory devices in a memory subsystem
Hope it clears some confusions between patents and reality. |
