Appeal No. 1999-1126 Page 6
Application No. 08/722,486
difference of bit lines BL2 and BL2X of the cell array CAR2."
Col. 5, ll. 1-4.
Although Sasaki discloses a sense amplifier circuit, the
circuit is not a differential current sensing amplifier. To
the contrary, the circuit amplifies a voltage difference
between output signals. "[S]pecifically, the invention
relates to a sense amplifier circuit technology integrated
with the memory cells to amplify a pair of complementary
signals having a minute potential difference and read out 1
from a memory cell." Col. 1, ll. 5-7.
Similarly, although Nogle teaches a sense amplifier, the
amplifier is not a differential current sensing amplifier. To
the contrary, the amplifier employs a voltage difference.
Specifically, "[t]he sense amplifier provides a first
differential current between the positive and negative output
terminals proportional to a difference in voltage between the
1A potential difference is "the voltage difference between
two points ...." Webster's Ninth New Collegiate Dictionary
921 (1990) (emphasis added).
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