Two circuit board touch-sensor device
AssigneeCypress Semiconductor Corporation
InventorDavid G. Wright
Life of this patent
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Abstract
An apparatus and method for detecting a presence of a conductive object on a sensor array of a first circuit board using active electronic components of a second circuit board, which is coupled to the first circuit board. The apparatus may include a first circuit board, which includes a sensor array of sensor elements, and a second circuit board, coupled to the first circuit board, including sensing circuitry to measure capacitance on the sensor array of the first circuit board. The method may include measuring a capacitance on the sensor array using the active electronic components of the second circuit board, and processing the measured capacitance.
Claims37
A method, comprising:
- providing a first circuit board including a sensor array of sensor elements of a touchpad, wherein the first circuit board comprises no active electronic components to measure capacitance;
- and
- detecting a presence of a conductive object on the touchpad of the first circuit board using active electronic components of a second circuit board coupled to the first circuit board.
A method, comprising:
- providing a first circuit board including one or more substrates with a plurality of capacitance sensor elements and interconnecting sensor traces, wherein the first circuit board comprises no active electronic components to measure capacitance;
- providing a second circuit board, wherein the second circuit board comprises active electronic components to measure capacitance;
- and
- coupling the first and second circuit boards.
An apparatus, comprising:
- a first circuit board including a sensor array of sensor elements of a touchpad;
- and
- a second circuit board coupled to the first circuit board, including sensing circuitry to measure capacitance on the sensor array of the first circuit board.
An apparatus, comprising:
- a first circuit board comprising a plurality of capacitance sensor elements;
- and
- means for detecting a presence of a conductive object on the plurality of capacitance sensor elements of the first circuit board, wherein the means for detecting the presence of the conductive object is disposed on a second circuit board that is not the first circuit board.
A system, comprising:
- a sensor array of sensor elements disposed on a first circuit board, wherein the first circuit board comprises no active electronic components to detect the presence of a conductive object on the sensor array;
- a keyboard matrix of conductive traces disposed on the first circuit board;
- and
- a second circuit board coupled to the first circuit board, wherein the second circuit comprises active electronic components to detect the presence of the conductive object on the sensor array.
Dependencies are inferred from the claim text.