Abstract: Embodiments described herein include an input device and associated processing system for sensing force applied by input objects. The input device comprises a display device comprising a plurality of layers formed as a display stack, the display stack including a top surface. The input device further comprises one or more strain gauges disposed within the display stack and configured to detect force applied to the top surface, and a processing system configured to perform display updating using the display device and to perform force sensing using the one or more strain gauges.

Abstract: Embodiments described herein include an input device and associated processing system for sensing force applied by input objects. The input device comprises a display device comprising a plurality of layers formed as a display stack, the display stack including a top surface. The input device further comprises one or more strain gauges disposed within the display stack and configured to detect force applied to the top surface, and a processing system configured to perform display updating using the display device and to perform force sensing using the one or more strain gauges.

Abstract: A method and associated processing system and input device are disclosed, the method comprising acquiring capacitive measurements using individual electrodes of a plurality of first sensor electrodes and a plurality of second sensor electrodes. The first sensor electrodes are formed of a first material having a positive gauge factor, and the second sensor electrodes are formed of a second material having a negative gauge factor. The method further comprises selectively forming one or more bridge circuits using the first sensor electrodes and the second sensor electrodes; and acquiring force measurements using the one or more bridge circuits.

Abstract: An input device described herein includes at least one dual purpose electrode that is used to perform both capacitive sensing to detect an input object (e.g., a finger or stylus) and force sensing to determine the force applied by the input object on the input device. During a first time period, the input device performs capacitive sensing using a first electrode of the plurality of sensor electrodes. However, during a second time period, the input device excites the first electrode and measures a resistance corresponding to the first electrode. The input device determines a force applied by an input object on the input device based on the measured resistance.

Abstract: A processing system including processing circuitry and sensor circuitry configured to obtain first resistance measurements of a plurality of sensor electrodes that compose a surface of an input device. The processing circuitry measures, in a first time interval, first values of electrical resistances of the electrodes. The processing circuitry calculates, from the first values, a first rate of change in the resistances, and measures, in a subsequent second time interval, second values of the electrical resistances. The processing circuitry calculates, from the second values, a second rate of change in the electrical resistances, as well as calculates, over the second time interval and based on the first rate of change, projected values of electrical resistances. The processing circuitry filters the projected values from the second values of the electrical resistances. The processing circuitry calculates, and reports, final values for the force over the second time interval using the filtered measurement.

Abstract: The embodiments described herein provide devices and methods that facilitate improved performance. In one embodiment, an input device comprises a plurality of capacitive sensor electrodes and a processing system coupled to the electrodes and configured to operate the electrodes to sense in a sensing region. Specifically, the processing system is configured to determine information about input objects in the sensing region based on comparisons of preliminary values with corresponding baseline values. The processing system is further configured to selectively operate in a first mode and a second mode. While operating in the first mode, the processing system selectively changes a baseline value of the plurality of baseline values by a first amount in response to that baseline value being below a corresponding preliminary value. This selective changing of baseline values occurs even when the processing system determines that an input object is in the sensing region.

Abstract: A processing system for a capacitive sensing device includes a sensor module and a determination module. The sensor module is coupled to transmitter electrodes and receiver electrodes. The sensor module is configured to transmit transmitter signals with the transmitter electrodes and receive resulting signals with the receiver electrodes. The resulting signals include effects corresponding to the transmitter signals. The determination module is configured to determine response values from the resulting signals, and determine a first adjusted response value by applying a negative multiplier to a first response value of the response values. The first response value is a negative value. The determination module is further configured to determine positional information for a first input object based on at least one of the first adjusted response value and a second response value of the response values, and report the positional information. The second response value is a positive response value.

Abstract: A method and associated processing system and input device are disclosed, the method comprising acquiring capacitive measurements using individual electrodes of a plurality of first sensor electrodes and a plurality of second sensor electrodes. The first sensor electrodes are formed of a first material having a positive gauge factor, and the second sensor electrodes are formed of a second material having a negative gauge factor. The method further comprises selectively forming one or more bridge circuits using the first sensor electrodes and the second sensor electrodes; and acquiring force measurements using the one or more bridge circuits.

Abstract: A processing system includes a sensor module and a determination module. The sensor module is coupled to sensor electrodes and is the sensor module configured to drive the sensor electrodes with sensing signals at a first resonance frequency of the pen. The determination module is configured to obtain, concurrently with the driving of the sensor electrodes, a measurements that are based on effects of the sensing signals, and a resonance of the pen in a sensing region. The determination module is further configured to determine positional information of the pen in the sensing region based on the measurements, and report the positional information.

Abstract: An input device described herein includes at least one hybrid electrode that is used to perform both capacitive sensing to detect an input object (e.g., a finger or stylus) and force sensing to determine the force applied by the input object on the input device. During a first time period, the input device drives a modulated signal on one more capacitive sensor electrodes to perform capacitive sensing. However, during a second time period, the input device drives a DC voltage across one or more of the capacitive sensor electrodes to perform force sensing. In one example, during the first time period, the input device drives the modulated signal on transmitter electrodes and measures resulting signals on receiver electrodes. During the second time period, however, the input device may drive the DC voltage across the transmitter or receiver electrodes to measure a force applied by the input object.

Abstract: Disclosed are systems and methods for detecting a finger touch and/or finger press. A method includes: detecting presence of a finger on a fingerprint sensor; causing the fingerprint sensor to take measurements using multiple successive frames of the fingerprint sensor; for each measurement, computing a metric associated with the measurement at a given frame corresponding to the measurement; at a first particular frame, determining that the finger has settled on the fingerprint sensor, wherein determining that the finger has settled comprises determining that the metric at the first particular frame exceeds a settled value threshold; and, based on determining that the finger has settled, determining that a finger touch has occurred. A finger press can be further determined by monitoring whether the metric passes a press threshold.

Abstract: Disclosed are systems and methods for detecting a finger touch and/or finger press. A method includes: detecting presence of a finger on a fingerprint sensor; causing the fingerprint sensor to take measurements using multiple successive frames of the fingerprint sensor; for each measurement, computing a metric associated with the measurement at a given frame corresponding to the measurement; at a first particular frame, determining that the finger has settled on the fingerprint sensor, wherein determining that the finger has settled comprises determining that the metric at the first particular frame exceeds a settled value threshold; and, based on determining that the finger has settled, determining that a finger touch has occurred. A finger press can be further determined by monitoring whether the metric passes a press threshold.

Abstract: The embodiments described herein thus provide devices and methods that facilitate improved input devices. Specifically, the devices, systems and methods provide the ability to accurately determine user input using multiple different sensing regimes. The different sensing regimes can be used to facilitate accurate position determination of objects both at the surface and away from the surface. For example, the different sensing regimes can be used to determine position information for both ungloved and gloved fingers. In one embodiment the first sensing regime uses a first duty cycle of absolute capacitive sensing and a first duty cycle of transcapacitive sensing. The second sensing regime uses a second duty cycle of absolute capacitive sensing and a second duty cycle of transcapacitive sensing, where the second duty cycle of absolute capacitive sensing is greater than the first duty cycle of absolute capacitive sensing.

Abstract: A processing system for a capacitive sensing device includes a sensor module and a determination module. The sensor module is for performing capacitive sensing in a sensing region using sensor electrodes. The sensing region includes a first sub-region and a second sub-region. The determination module is for detecting a first input object in the sensing region upon an initial contact of the first input object in the sensing region, determining positional information of the first input object, and determining, from the positional information, that the first input object is located in the second sub-region of the sensing region. Responsive to the first input object being located in the second sub-region of the sensing region, the determination module suppresses reporting of the first input object.

Abstract: An input device described herein includes at least one dual purpose electrode that is used to perform both capacitive sensing to detect an input object (e.g., a finger or stylus) and force sensing to determine the force applied by the input object on the input device. During a first time period, the input device performs capacitive sensing using a first electrode of the plurality of sensor electrodes. However, during a second time period, the input device excites the first electrode and measures a resistance corresponding to the first electrode. The input device determines a force applied by an input object on the input device based on the measured resistance.

Abstract: An input device described herein includes at least one hybrid electrode that is used to perform both capacitive sensing to detect an input object (e.g., a finger or stylus) and force sensing to determine the force applied by the input object on the input device. During a first time period, the input device drives a modulated signal on one more capacitive sensor electrodes to perform capacitive sensing. However, during a second time period, the input device drives a DC voltage across one or more of the capacitive sensor electrodes to perform force sensing. In one example, during the first time period, the input device drives the modulated signal on transmitter electrodes and measures resulting signals on receiver electrodes. During the second time period, however, the input device may drive the DC voltage across the transmitter or receiver electrodes to measure a force applied by the input object.

Abstract: Side sensing for electronic devices. An input device has a first sensing region including a first plurality of sensor electrodes configured to sense objects in the first sensing region that are ohmically coupled to the first plurality of sensor electrodes. A second sensing region is positioned adjacent to the first sensing region and includes a second plurality of sensor electrodes configured to sense objects in the second sensing region that are ohmically isolated from a second plurality of sensor electrodes but are capacitively coupled to the second plurality of sensor electrodes.

Abstract: Embodiments described herein include an input device and associated processing system for sensing force applied by input objects. The input device comprises a display device comprising a plurality of layers formed as a display stack, the display stack including a top surface. The input device further comprises one or more strain gauges disposed within the display stack and configured to detect force applied to the top surface, and a processing system configured to perform display updating using the display device and to perform force sensing using the one or more strain gauges.

Abstract: A processing system for a capacitive sensing device includes a sensor module and a determination module. The sensor module is coupled to transmitter electrodes and receiver electrodes. The sensor module is configured to transmit transmitter signals with the transmitter electrodes and receive resulting signals with the receiver electrodes. The resulting signals include effects corresponding to the transmitter signals. The determination module is configured to determine response values from the resulting signals, and determine a first adjusted response value by applying a negative multiplier to a first response value of the response values. The first response value is a negative value. The determination module is further configured to determine positional information for a first input object based on at least one of the first adjusted response value and a second response value of the response values, and report the positional information. The second response value is a positive response value.

Abstract: A processing system for a capacitive sensing device includes a sensor module and a determination module. The sensor module is coupled to transmitter electrodes and receiver electrodes. The sensor module is configured to transmit transmitter signals with the transmitter electrodes and receive resulting signals with the receiver electrodes. The resulting signals include effects corresponding to the transmitter signals. The determination module is configured to determine response values from the resulting signals, and determine a first adjusted response value by applying a negative multiplier to a first response value of the response values. The first response value is a negative value. The determination module is further configured to determine positional information for a first input object based on at least one of the first adjusted response value and a second response value of the response values, and report the positional information. The second response value is a positive response value.