Appeal No. 1998-2189
Application 08/097,372
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1-10 and 13. Claims 11 and 12
are canceled.
We reverse.
BACKGROUND
The disclosed invention relates to a bidirectional
communications method and system for transferring a plurality
of data values between a first processor and a second
processor. The first processor exclusively controls a
direction signal and an asynchronous clock signal to transfer
data, which is said to provide a simpler communications
interface and protocol.
Claim 1 is reproduced below.
1. A bidirectional communications system for
transferring a plurality of data values between a first
processor means and a second processor means, each data
value representing a respective plurality of data bits,
the system comprising:
direction control means for forming and transmitting
a direction signal from the first processor means to the
second processor means, to enable the second processor
means to transfer data to the first processor means when
the direction signal has a first state, and to notify the
second processor means that the first processor means is
ready to transfer data to the second processor means when
the direction signal has a second state, said direction
signal being exclusively driven by the first processor
means;
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