Boots – shoes – and leggings
Patent
1990-01-09
1991-07-23
Shaw, Dale M.
Boots, shoes, and leggings
G06F 752
Patent
active
050349120
ABSTRACT:
A multiplication processing circuit requiring no digital-analog converter includes a circuit for multiplying a digital multiplication coefficient by a digital multiplicand and outputting the result of multiplication as an analog current signal. The multiplication processing circuit includes a circuit for decoding the digital multiplication coefficient to generate one or a plurality of control signals, a circuit responsive to the digital multiplicand and to the generated control signal for generating a signal indicating, in decimal notation, the result of multiplication of the digital multiplication coefficient by the digital multiplicand, and a circuit for converting the signal indicating the result of multiplication into an analog current signal of a corresponding magnitude. Each of the control signals indicates at least one digital multiplication coefficient in decimal notation. The circuit for generating the signal indicative of the result of multiplication includes a circuit for logically processing, by logic gates, the control signal and the digital multiplicand. The logic gate circuit includes a circuit for detecting coincidence
on-coincidence between a pattern of the generated control signal and a bit pattern of the digital multiplicand, and a circuit responsive to the output of the detecting circuit for activating one of a plurality of possible signals indicating the results of multiplication.
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S. Freeny, "Special Purpose Hardware for Digital Filtering" Proceedings of the IEEE, vol. 63, No. 4, Apr. 1975, pp. 633-648.
Kouno Hiroyuki
Takeuchi Sumitaka
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Long T.
Shaw Dale M.
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