18463572. TOUCHPAD FORCE CALCULATION USING NO-TOUCH CAPACITANCE (Microsoft Technology Licensing, LLC)
TOUCHPAD FORCE CALCULATION USING NO-TOUCH CAPACITANCE
Organization Name
Microsoft Technology Licensing, LLC
Inventor(s)
TOUCHPAD FORCE CALCULATION USING NO-TOUCH CAPACITANCE
This abstract first appeared for US patent application 18463572 titled 'TOUCHPAD FORCE CALCULATION USING NO-TOUCH CAPACITANCE
Original Abstract Submitted
Methods and computing devices for estimating a force F exerted on a touchpad are disclosed. In one example, a method comprises determining that the touchpad is not being touched. At least on condition of determining that the touchpad is not being touched, a no-touch capacitance value of the PCB is calculated. After calculating the no-touch capacitance value, the method includes determining that the touchpad is being touched. At least on condition that the touchpad is being touched, the no-touch capacitance value and a touch-based capacitance value are used to estimate the force F exerted on the touchpad.