Providing ground truth for touch sensing with in-display fingerprint sensor
AssigneeSynaptics Incorporated
InventorNickolas Fotopoulos
Life of this patent
Estimating the term…
Abstract
An input device includes a plurality of sensor electrodes and a processing system. The plurality of sensor electrodes is configured for capacitive sensing in a sensing region of the input device. The processing system is configured to receive first sensor information about the sensing region from the plurality of sensor electrodes, and to receive second sensor information about the sensing region from an auxiliary sensing device coupled to the sensing region. The processing system is further configured to dynamically calibrate the plurality of sensor electrodes based at least in part on the first sensor information and the second sensor information. In some aspects, the auxiliary sensing device may comprise one or more optical sensors.
Claims20
An input device comprising:
- a plurality of sensor electrodes configured for capacitive sensing in a sensing region of the input device;
- and
- a processing system configured to:
- receive first sensor information about the sensing region from the plurality of sensor electrodes;
- determine whether the first sensor information indicates an error condition;
- activate one or more optical sensors to capture an image of the sensing region in response to determining that the first sensor information indicates the error condition, wherein the one or more optical sensors is operable in at least a first mode and a second mode;
- and
- compare the image of the sensing region with the first sensor information to dynamically calibrate the plurality of sensor electrodes.
A method of operating an input device, comprising:
- receiving first sensor information, about a sensing region of the input device, from a plurality of sensor electrodes configured for capacitive sensing;
- determining whether the first sensor information indicates an error condition;
- activating one or more optical sensors to capture an image of the sensing region in response to determining that the first sensor information indicates the error condition, wherein the one or more optical sensors is operable in at least a first mode and a second mode;
- and
- comparing the image of the sensing region with the first sensor information to dynamically calibrate the plurality of sensor electrodes.
A processing system, comprising:
- one or more processors;
- and
- a non-transitory processor-readable storage medium storing instructions that, when executed by the one or more processors, cause the processing system to:
- receive first sensor information, about a sensing region coupled to the processing system, from a plurality of sensor electrodes configured for capacitive sensing;
- determine whether the first sensor information indicates an error condition;
- activate one or more optical sensors to capture an image of the sensing region in response to determining that the first sensor information indicates the error condition, wherein the one or more optical sensors is operable in at least a first mode and a second mode;
- and
- compare the image of the sensing region with the first sensor information to dynamically calibrate the plurality of sensor electrodes.
Dependencies are inferred from the claim text.