Boots – shoes – and leggings
Patent
1994-07-22
1996-09-10
Envall, Jr., Roy N.
Boots, shoes, and leggings
G06F 710
Patent
active
055555152
ABSTRACT:
An apparatus and method for generating a linearly filtered composite signal, wherein the original signal of said composite signal can be divided into a plurality of sequentially arranged original sub-signals. The apparatus having a plurality of memory (1.sub.1, 1.sub.2) which have stored filtered sub-signals y.sub.1 (n), y.sub.2 (n) obtained by linearly filtering the original sub-signals, respectively; an adder (5) for adding data of the sub-signals y.sub.1 (n), y.sub.2 (n) read out from the memory to provide the resultant data y.sub.1 (n)+y.sub.2 (n) to an output terminal of the apparatus; and a controller for controlling timings of providing the data of the sub-signals stored in the memory to the adder. The controller controls such that when a first sub-signal is to be generated, the data thereof sequentially read out from the corresponding memory are provided to the adder, thereby providing the data thereof through the adder to the output terminal, when a second sub-signal is to be generated in place of the first one, during a predetermined time period centered at a switching timing from the first sub-signal to the second one, both of data of the first and second sub-signals read out from the corresponding memory are added at the adder, thereby providing the added data to the output terminal, and thereafter, only the data of the second sub-signal read out from the second memory are provided to the adder, thereby providing the data thereof to the output terminal.
REFERENCES:
patent: 5175769 (1992-12-01), Hejna, Jr. et al.
patent: 5327498 (1994-07-01), Hamon
patent: 5337264 (1994-08-01), Levien
patent: 5394473 (1995-02-01), Davidson
Jackson, "High-Speed Convolution", Digital Filter and Signal Processing, second Edition, pp. 164-166, 1989.
Saito Koichi
Tomita Hiroyuki
Envall Jr. Roy N.
Leader Electronics Corp.
Ngo Chuong D.
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