Patent ID: 8017890

Claim:
A touch control comprising, in combination, an elongated control surface, and a shunt mode capacitive sensor adjacent to the elongated control surface for detecting a position of a human finger touching the elongated control surface, wherein the shunt mode capacitive sensor comprises at least one conductive transmitter plate adapted to be driven by an alternating current and to create an electrical field, and first and second receiver plates that are each conductive and adapted to capacitively couple with the at least one conductive transmitter plate, the first receiver plate comprises a first set of tongues, which said first set of tongues comprises more than two tongues, the second receiver plate comprises a second set of tongues, which said second set of tongues comprises more than two other tongues, and the first set of tongues and the second set of tongues are interleaved, the elongated control surface has a first end and a second end, and the width of tongues in the first set of tongues progressively increases, and the width of tongues in the second set of tongues progressively decreases, from the first end to the second end, wherein the at least one conductive transmitter plate comprises a first transmitter plate and a second transmitter plate, and the first receiver plate and the second receiver plate are positioned between the first transmitter plate and the second transmitter plate.