Appeal No. 96-1895
Application 08/011,682
comprises a notch filter having said abrupt slope and an
elliptical function filter having said pole, so that all the
resonance frequencies occurring in said resonance
characteristics can be suppressed." Claim 14 recites a
positioning control system having a "low pass filter which
has an abrupt slope and a discontinuous pole in the
gain-frequency characteristics thereof . . . wherein said
low pass filter is constituted by a combination of a notch
filter having said abrupt slope and an elliptical function
filter having said pole, so that all resonance frequencies
occurring in said resonance characteristics can be
suppressed." Therefore, the independent claims require a
low pass filter having both a notch filter and an elliptical
function filter.
The examiner finds that "Abed, see Fig. 3 at 149,
col. 8, lines 3-9, Fig. 11, and col. 13, lines 51-68 (the
analog filter of Abed is considered to be a part of Abed's
'arithmetic control means'), discloses the invention as
claimed except for switching his filter on and off and
setting an initial condition when the filter is off" (FR4;
EA4). Element 149 in figure 3 is a resonant filter. Abed
- 7 -
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007