Estimating force applied by an input object to a touch sensor
First Claim
Patent Images
1. A force sensing device, comprising:
- a plurality of sensor electrodes within a sensing region; and
a processing system configured to;
drive the plurality of sensor electrodes to acquire sensor data indicative of deflection of at least one sensor electrode of the plurality of sensor electrodes,generate a first histogram based on measurements determined from the sensor data, the first histogram including a plurality of bins each having a corresponding measurement range and an associated value, wherein the associated value for each of the plurality of bins corresponds to a count of the measurements that are within the corresponding measurement range, wherein the plurality of bins comprises a first bin group associated with locations of the sensing region affected by an input force applied by a first input object and a second bin group associated with locations of the sensing region affected by a capacitive coupling with the first input object, andbased on the values associated with at least a subset of the plurality of bins of the first histogram, determine force information for the first input object.
2 Assignments
0 Petitions
Accused Products
Abstract
Techniques for determining force applied by an input object in a sensing region of an input device are provided. The techniques generally include driving a plurality of sensor electrodes within a sensing region to acquire sensor data, generating a first histogram based on the sensor data, the first histogram including a plurality of bins each having an associated value, and based on the values associated with at least a subset of the plurality of bins of the first histogram, determining force information for an input object.
53 Citations
21 Claims
-
1. A force sensing device, comprising:
-
a plurality of sensor electrodes within a sensing region; and a processing system configured to; drive the plurality of sensor electrodes to acquire sensor data indicative of deflection of at least one sensor electrode of the plurality of sensor electrodes, generate a first histogram based on measurements determined from the sensor data, the first histogram including a plurality of bins each having a corresponding measurement range and an associated value, wherein the associated value for each of the plurality of bins corresponds to a count of the measurements that are within the corresponding measurement range, wherein the plurality of bins comprises a first bin group associated with locations of the sensing region affected by an input force applied by a first input object and a second bin group associated with locations of the sensing region affected by a capacitive coupling with the first input object, and based on the values associated with at least a subset of the plurality of bins of the first histogram, determine force information for the first input object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A processing system, comprising:
-
a sensor circuitry, configured to drive a plurality of sensor electrodes within a sensing region to acquire sensor data indicative of deflection of at least one sensor electrode of the plurality of sensor electrodes; and a determination processor, configured to; generate a first histogram based on measurements determined from the sensor data, the first histogram including a plurality of bins each having a corresponding measurement range and an associated value, wherein the associated value for each of the plurality of bins corresponds to a count of the measurements that are within the corresponding measurement range, wherein the plurality of bins comprises a first bin group associated with locations of the sensing region affected by an input force applied by a first input object and a second bin group associated with locations of the sensing region affected by a capacitive coupling with the first input object, and based on the values associated with at least a subset of the plurality of bins of the first histogram, determine force information for the first input object. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A method, comprising:
-
driving a plurality of sensor electrodes within a sensing region to acquire sensor data indicative of deflection of at least one sensor electrode of the plurality of sensor electrodes; determining measurements from a subset of the sensor data, and a count of the measurements that correspond to a first range of values, the first range of values having an upper threshold value and a lower threshold value, wherein the first range of values is one of a plurality of ranges of values and is associated with locations of the sensing region affected by an input force applied by an input object, and a second range of values of the plurality of ranges of values is associated with locations of the sensing region affected by a capacitive coupling with the input object; and based on the subset of the sensor data, determining force information for the input object. - View Dependent Claims (18, 19, 20, 21)
-
Specification