Boots – shoes – and leggings
Patent
1995-06-15
1997-06-03
Ngo, Chuong D.
Boots, shoes, and leggings
36472416, 3647242, G06F 1700
Patent
active
056361513
ABSTRACT:
In an adaptive filter, each of first through N-th taps belongs to either one of first through M-th tap groups. A first generating section (31) generates a specific one of the first through the M-th tap groups. A second generating section (32 to 34, 37, 38) generates a tap select signal in accordance with first through K-th tap gains and the specific tap group, where a positive integer K is less than a positive integer N. By the tap select signal, a tap select section (22) connects first through K-th selected taps to a filter section (20-1 to 20-(N-1), to 24-1 to 24-K, 25-1 to 25-K, 26, 27). A control section (40, 41, 52, 53) is responsive to the tap select signal for controlling the first generating section to make the first generating section generate a renewal one of the first through the M-th tap groups as the specific tap group.
REFERENCES:
patent: 4805215 (1989-02-01), Miller
patent: 5218560 (1993-06-01), Ikeda et al.
patent: 5245561 (1993-09-01), Sugiyama
patent: 5455819 (1995-10-01), Sugiyama
Spring Conference of The Institute of Electronics, Information and Communication, 1993, pp. 1-181, Shigeji IKEDA et al.: "A Fast Algorithm for Adaptive FIR Filters with Adaptive Tap Location Based on Transition-Timing Control of Tap-Index Subgroups." (unknown month).
NEC Corporation
Ngo Chuong D.
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