Appeal No. 1996-3229
Application 08/271,477
generators to the “supply voltage” and “ground”.
(Answer-pages 5 and 6.)
We are not persuaded by any of the Examiner’s
statements, supra. As indicated in Gabara’s col. 2, control
voltages VCP and VCN are different from the supply voltage
(VDD for Gabara and VCC for Appellants), and different from
the ground voltage (VSS for Gabara and Ï for Appellants). VCP
and VCN are generated by power supplies which themselves are
powered by the “supply voltage” and “ground” voltage, and
therefore cannot be equal thereto. This can be seen by
reference to the typical power supplies noted by Gabara at
column 2, lines 23-26, i.e., Figures 2 through 5 of U.S. Pat.
No. 4,823,029. Therefore, although VCP and VCN are
adjustable, the “supply voltage” and “ground” voltage would
exceed the range of adjustability.
Although replacing VCP and VCN with the “supply
voltage” and “ground” might lower manufacturing costs as
proposed by the Examiner, there is no teaching to do so other
than Appellants’ disclosure, and doing so would defeat the
purpose of Gabara to compensate for process, voltage and
temperature variations.
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