Appeal No. 1998-1107 Page 11
Application No. 08/536,768
180. The operation of these integrator cells 171 is
well known in the art and is described in the
Hogenaur article cited above. In the integrator
register 172, the digital signal input from the
heterodyning circuit 122, and filtered by the
cascaded integrator filter section 170, is
subsampled by, as in the example described herein, a
factor of 8, thereby effecting an 8:1 rate change.
Col. 7, ll. 46-56. The examiner fails to explain, however,
which of these components and connections he believes sums
true or complement signals of selected nodes of a delay
circuit. The examiner also fails to allege, let alone show,
that Scott cures these deficiencies.
In view of these failures, we are not persuaded that the
references disclose or would have suggested the claimed
limitations of summing true or complement signals of selected
nodes of a delay circuit or a delay circuit comprising a
serial connection of delay stages. Therefore, we reverse the
rejection of claims 8, 9, 13, 26, and 27 as anticipated by
Stehlik; the rejection of claims 6, 11-12, 14-16, 18-25, and
28-30 as obvious over Stehlik; and the rejection of claims 7,
10, and 17 as obvious over Stehlik in view of Scott.
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