Appeal No. 1997-3956
Application 08/583,960
an analog signal into a digital signal. On page 9, Appellant
discloses that Figure 3 is a circuit diagram showing a 6-bit
A/D converter according to one embodiment of the present
invention. On pages 10 through 17, Appellant discloses a
first embodiment of the 6-bit A/D converter. In particular,
Appellant discloses on page 15 that four capacitors having the
same capacitance are connected in series. The potential
difference of the middle-level region is applied to both ends
of the series circuit of capacitors C1 to C4 bias switches SE
and FF. The applied voltage is divided by four by the
capacitors C1 to C4. On page 22 of the specification,
Appellant discloses that capacitors C1 to C4 may be replaced
with four resistors having the same resistance. In this case,
the series-connected resistors are connected in parallel to
the resistor R1 so that the replaced resistor should have a
sufficiently large resistance to avoid influencing the
resistance of the string resistance R1.
The only claim in the present application, claim 6, is
reproduced as follows:
6. An A/D converter comprising:
-2-
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