Abstract:
A processing system for an input device includes a sensor module coupled to sensor electrodes. The sensor module includes sensor circuitry and configured to acquire first capacitive measurements when the input device is in a first state, and acquire second capacitive measurements when the input device is in a second state. The second state has an increased ground as compared to the first state. The processing system further includes a determination module configured to determine positional information for an input object based on the first capacitive measurements and the second capacitive measurements.
Abstract:
Methods, systems and devices are described for operating an electronic system which includes a first plurality of sensor electrodes disposed in a first layer and configured to detect input objects at an input surface of the input device, the first plurality of sensor electrodes including a first subset of transmitter electrodes; a second plurality of sensor electrodes configured to detect a force imparted to the input surface and configured for capacitive coupling with the first subset of transmitter electrodes; and a compressible dielectric configured to compress in response to force applied to the input surface. The capacitive coupling between the transmitter electrodes and the second plurality of sensor electrodes is configured to vary in response to the applied force.
Abstract:
A processing system including an amplifier configured to generate, from multiple spatial-common-mode-processed signals, a spatial common mode estimate and multiple feedback signals. The processing system includes multiple charge integrators configured to obtain resulting signals from the capacitive sensor electrodes, each of the resulting signals including a spatial common mode component and a residual noise component. The charge integrators generate multiple spatial-common-mode-processed signals by mitigating the spatial common mode component and the residual noise component in the resulting signals using the feedback signals. The processing system includes a programmable gain amplifier configured to determine the spatial common mode estimate.
Abstract:
In an example, an input device includes a substrate and an elastomeric material. The substrate includes a plurality of sensor electrodes disposed thereon. The elastomeric material is mechanically coupled to the substrate and overlaps the plurality of sensor electrodes. The elastomeric material includes an inner portion disposed such that an area of contact between the inner portion and at least some of the plurality of sensor electrodes changes in response to at least one of a lateral force or a vertical force applied to the elastomeric material.
Abstract:
An input device having a sensing region overlapping an input surface includes a first substrate, a second substrate physically coupled to the first substrate, and a sensor electrode disposed on the first substrate and configured to detect input objects in the sensing region. A first force sensor includes a first electrode disposed on the first substrate and a first conductive portion of the second substrate capacitively coupled with the first electrode. The first conductive portion is configured to move relative to the first electrode such that a first variable capacitance of the first force sensor changes in response to force applied to the input surface in a first direction parallel to the touch surface.
Abstract:
An input device having a sensing region overlapping an input surface includes a first substrate, a second substrate physically coupled to the first substrate, and a sensor electrode disposed on the first substrate and configured to detect input objects in the sensing region. A first force sensor includes a first electrode disposed on the first substrate and a first conductive portion of the second substrate capacitively coupled with the first electrode. The first conductive portion is configured to move relative to the first electrode such that a first variable capacitance of the first force sensor changes in response to force applied to the input surface in a first direction parallel to the touch surface.
Abstract:
An input device having a sensing region overlapping an input surface includes a first substrate, a second substrate physically coupled to the first substrate, and a sensor electrode disposed on the first substrate and configured to detect input objects in the sensing region. A first force sensor includes a first electrode disposed on the first substrate and a first conductive portion of the second substrate capacitively coupled with the first electrode. The first conductive portion is configured to move relative to the first electrode such that a first variable capacitance of the first force sensor changes in response to force applied to the input surface in a first direction parallel to the touch surface.
Abstract:
An input device includes an input surface to contact a plurality of input objects. The plurality of input objects includes a first input object and a second input object. Further, the input device includes a plurality of sensor electrodes to determine positional information for the plurality of input objects on the input surface. The input device includes an actuator to move the input surface to provide haptic feedback to the first input object contacting the input surface and to isolate haptic feedback to the second input object contacting the input surface.
Abstract:
An input device is provided that facilitates improved user interface functionality by determining force information for each of multiple objects in a sensing region. The input device includes a processing system, a sensor configured to sense objects in a sensing region proximate a surface, and a plurality of force sensors. The plurality of force sensors are coupled to the surface to provide a plurality of measures of force applied to the surface. The processing system is configured to determine positional information for each the multiple objects sensed by the sensor in the sensing region. Furthermore, the processing system is configured to determine force information for each of the multiple objects from the positional information and the plurality of measures of force applied to the surface. Thus, device and method provides the ability to determine both positional information and force information for each of multiple objects in a sensing region.
Abstract:
Methods, systems and devices are described for operating an electronic system which includes a first plurality of sensor electrodes disposed in a first layer and configured to detect input objects at an input surface of the input device, the first plurality of sensor electrodes including a first subset of transmitter electrodes; a second plurality of sensor electrodes configured to detect a force imparted to the input surface and configured for capacitive coupling with the first subset of transmitter electrodes; and a compressible dielectric configured to compress in response to force applied to the input surface. The capacitive coupling between the transmitter electrodes and the second plurality of sensor electrodes is configured to vary in response to the applied force.