Appeal No. 96-0517
Application 08/264,473
charging/discharging problem without disabling effective dc
feedback, only one of which techniques is before us in this
appeal. 5
Referring to appellants' Figure 14, the
charging/discharging time for capacitor 26 is reduced in
accordance with the claimed invention by replacing the
voltage-to-current amplifier 24 with a voltage-to-current
converting amplifier 70 that has an exponential input/output
characteristic, shown in the form of a voltage-to-current
conversion stage 71 connected in series with an exponential
current amplification stage 72 (Spec. at 22:23 to 23:10).
Curves a-c in Figure 15 represent the exponential relationship
between input voltage Vi and output current Io for three
different types of amplifiers, while curves in Figure 16
represent the relationship between input voltage Vi and the
transconductance gm for those amplifiers (Spec. at 23:11-22).
Claim 14, the sole independent claim, reads on Figure 14
as follows:
5Application Serial No. 08/447,901, involved in Appeal
No. 97-3918, claims another of these techniques.
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