Palpably controllable digital plate
First Claim
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1. A palpably controllable digital plate comprising:
- an induction plate disposing therein a plurality of longitudinal metal rods and a plurality of transverse metal rods for inducing a change of a parameter when in contact with an object having a reactant property totally accounting for an induction of said change;
a resonant circuit device electrically connected to said induction plate for sensing said change;
an oscillator electrically connected to said resonant circuit device for supplying an oscillating frequency to said resonant circuit device; and
a controller electrically connected to said resonant circuit device and having an output for converting said change into a parametrial information to be sent to said output.
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Abstract
A cost-effective and/or convenient digital plate being palpably controllable is provided. The digital plate includes an induction plate capable of inducing a change of a parameter when in contact with an object having a reactant property, a measurer for sensing the change, and a controller having an output for converting the change into a parametral information to be sent to the output.
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Citations
27 Claims
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1. A palpably controllable digital plate comprising:
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an induction plate disposing therein a plurality of longitudinal metal rods and a plurality of transverse metal rods for inducing a change of a parameter when in contact with an object having a reactant property totally accounting for an induction of said change; a resonant circuit device electrically connected to said induction plate for sensing said change; an oscillator electrically connected to said resonant circuit device for supplying an oscillating frequency to said resonant circuit device; and a controller electrically connected to said resonant circuit device and having an output for converting said change into a parametrial information to be sent to said output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Apparatus for indicating position on a surface comprising:
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a plurality of electrically reactive elements positionally arranged in an orthogonal matrix in proximity to the surface such that finger contact with the surface changes the reactance of an element near the finger; a source of high frequency oscillations; a resonant circuit connected to the source, the resonant circuit having a resonant frequency near the frequency of the oscillations; means for sequentially coupling the elements to the resonant circuit in a predetermined order to change the resonant frequency in accordance with the reactance of the coupled element; means for sensing in the predetermined order changes in the amplitude of the oscillations caused by changes in the resonant frequency to ascertain the position of finger contact on the surface; and means for recording the changes in amplitude. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification