Patent ID: 11947768
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A device comprising:
a sensor comprising sensor lines arranged along a first axis and along a second axis to form a grid; and
a circuit in communication with the sensor, the circuit configured to:
prior to scanning any of the sensor lines, identifying user interactions on the sensor;
based at least on identifying the user interactions:
sample first outputs of the sensor responsive to simultaneously triggering the sensor lines along the first axis with a same signal over a first stage of detection without sampling the sensor lines along the second axis; and
select a second set of the sensor lines along the second axis that indicate a presence of the user interactions from based on the first outputs sampled;

trigger, based on a multi-touch detection, only the second set, one sensor line at a time over a second stage to receive second outputs;
sample second outputs responsive to the triggering over the second stage; and
determine positions of the user interactions on the sensor from the second outputs sampled over the second stage, wherein the first stage occurs over a first period of time and wherein the second stage occurs over a second period of time subsequent to the first period of time.