Control Panel
First Claim
1. A control panel comprising:
- a capacitive position sensing element coupled to a position sensing circuit operable to determine the position of a capacitive load applied to the position sensing element; and
at least one mechanical switch positioned within a sensitive area of the position sensing element, wherein the switch has an open state and a closed state and is arranged such that a switched contact of the switch is electrically coupled to the position sensing element when the switch is in the closed state and is electrically decoupled from the position sensing element when the switch is in the open state.
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Accused Products
Abstract
A control panel having a touch sensitive position sensor and at least one mechanical switch located within a sensitive area of the position sensor is provided. The position sensor comprises a capacitive position sensing element coupled to position sensing circuitry operable to determine the position of a capacitive load, such as a finger, positioned adjacent to the sensitive area of the position sensing element. The mechanical switch has an open state and a closed state and is arranged such that a contact of the switch is selectively electrically coupled to or decoupled from the position sensing element depending on whether the switch is in the open or closed state. A compact and robust control panel can thus be provided in which the presence of the mechanical switch within the sensitive area of the position sensor does not significantly effect its sensitivity.
100 Citations
15 Claims
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1. A control panel comprising:
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a capacitive position sensing element coupled to a position sensing circuit operable to determine the position of a capacitive load applied to the position sensing element; and
at least one mechanical switch positioned within a sensitive area of the position sensing element, wherein the switch has an open state and a closed state and is arranged such that a switched contact of the switch is electrically coupled to the position sensing element when the switch is in the closed state and is electrically decoupled from the position sensing element when the switch is in the open state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device having a control panel comprising:
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a capacitive position sensing element coupled to a position sensing circuit operable to determine the position of a capacitive load applied to the position sensing element; and
at least one mechanical switch positioned within a sensitive area of the position sensing element, wherein the switch has an open state and a closed state and is arranged such that a switched contact of the switch is electrically coupled to the position sensing element when the switch is in the closed state and is electrically decoupled from the position sensing element when the switch is in the open state.
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Specification