Boots – shoes – and leggings
Patent
1991-05-15
1993-03-09
Mai, Tan V.
Boots, shoes, and leggings
36472401, G06F 1531
Patent
active
051930706
ABSTRACT:
A transversal filter circuit including a plurality of tap circuits, each having a serial multiplication circuit having a simplified construction and not requiring a shift of decimal (binary) points of data during a partial product calculation and addition operation. The serial multiplier includes a bidirectional shift register for shifting a tap coefficient by a predetermined number of bits in one of two directions, a data input circuit, a partial product calculation circuit, an adding and holding circuit, and a control circuit. The control circuit alternatively changes the shift direction of the bidirectional shift register for shifting a tap coefficient and a data output direction of the data input circuit at each successive cycle. The partial product calculation circuit calculates a partial product of a tap coefficient from the shift register and the input data for a plurality of times defined by a bit number of the input data. The adding and holding circuit adds a newly calculated partial product to a sum of the partial products.
REFERENCES:
patent: 4791596 (1988-12-01), Harbich
patent: 4843581 (1989-06-01), Cupo et al.
patent: 4931973 (1990-06-01), Asghar et al.
patent: 4969191 (1990-11-01), Masson et al.
Abiko Shigeshi
Saiki Shoji
Donaldson Richard L.
Hiller William E.
Mai Tan V.
Texas Instruments Incorporated
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