Appeal No. 1997-3743
Application 08/419,166
central processing unit and a unit external to the modular
programmable controller, the system comprising:
a first bus via which the at least one central processing
unit and the peripheral unit communicate; and
a busable programming interface located on the central
processing unit, the external unit being coupled to the busable
programming interface;
wherein communication between the peripheral unit and the
external unit takes place by means of differential signal
transmission via the busable programming interface and a second
bus arranged within the modular programmable controller.
The following references are relied on by the examiner:
Mathews et al. (Mathews) 5,225,974 July
6, 1993
Nakayama 5,349,679 Sep. 20,
1994
(filed Aug. 27, 1991)
Claim 9 stands rejected under 35 U.S.C. § 103. As evidence
of obviousness, the examiner relies upon Mathews in view of
Nakayama.
Rather than repeat the positions of the appellant and the
examiner, reference is made to the brief and the answer for the
respective details thereof.
OPINION
Generally for the reasons set forth by the examiner in the
answer with respect to his analysis of Mathews, we sustain the
rejection. Inasmuch as we are in agreement with appellant's
2
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