Boots – shoes – and leggings
Patent
1990-12-06
1993-02-16
Smith, Jerry
Boots, shoes, and leggings
310313R, G06G 712
Patent
active
051876817
ABSTRACT:
A control apparatus for a surface acoustic wave convolver element having a gate electrode, a grounded electrode and a piezoelectric layer therebetween. A bias voltage variable within a predetermined range is applied to the gate electrode so as to cause the convolver element to operate at the optimum convolution efficiency. A first mode signal is output when the variable bias voltage is in the proximity of either end of the predetermined range, and a second mode signal is output when the variable bias voltage is in a range defined by excluding the first range from the predetermined range. The variable bias voltage is applied to the convolver element when the second mode signal is output. When the first mode signal is output, the characteristics of the convolver element are controlled at an increased rate relative to a control rate when said variable bias voltage is used.
REFERENCES:
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patent: 4024480 (1977-05-01), Reeder et al.
patent: 4489289 (1984-12-01), Slobodnik et al.
patent: 4697115 (1987-09-01), Mitsutsuka
patent: 4798988 (1989-01-01), Mitsutsuka
patent: 5070472 (1991-12-01), Okagaki
Clarion Co. Ltd.
Smith Jerry
Trammell Jim
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