Boots – shoes – and leggings
Patent
1993-12-23
1995-06-13
Mai, Tan V.
Boots, shoes, and leggings
G06J 100
Patent
active
054249651
ABSTRACT:
A multiplication circuit for multiplying analog values. The multiplication circuit receives a plurality of input voltages and selects one of the input voltages. The multiplication circuit also includes at least one resistor/capacitor (RC) circuit. The RC circuits includes a resistor for receiving a stepwise start signal and a capacitor, which is connected between a ground potential and the resistor. An output terminal is connected between the resistor and the capacitor. The output terminal outputs an output voltage. The multiplication circuit produces a stop signal when a difference between the selected one of the input voltages and the output voltage is greater than a predetermined value. The multiplication circuit selectively increases or decreases a count value by a number of clock pulses that occur between the stepwise start signal and the stop signal, The multiplication circuit produces a count signal, which is indicative of the count value. The multiplication circuit includes a switch for electrically disconnecting, in accordance with the count signal, the resistor and the capacitor of the RC circuit.
REFERENCES:
patent: 4042815 (1977-08-01), Brown et al.
patent: 4169287 (1979-09-01), Middendorf et al.
Ochi, Hiroshi, "The Digital--Filter Design Handbook", CQ Suppan Kabushikigaisha, 1991.
Shou Guoliang
Takatori Sunao
Yamamoto Makoto
Yang Weikang
Mai Tan V.
Yozan Inc.
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