US 12,229,380 B2
Detecting manually applied pressure
Carl Olof Fredrik Jonsson, Gävle (SE)
Assigned to Peratech IP Ltd, North Yorkshire (GB)
Filed by Peratech IP Ltd., Catterick Garrison (GB)
Filed on May 30, 2023, as Appl. No. 18/203,600.
Application 18/203,600 is a continuation of application No. PCT/GB2021/000128, filed on Nov. 25, 2021.
Claims priority of application No. 2018700 (GB), filed on Nov. 27, 2020.
Prior Publication US 2023/0305668 A1, Sep. 28, 2023
Int. Cl. G06F 3/045 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/045 (2013.01) [G06F 3/0414 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A detector for detecting manually applied pressure, comprising:
a substrate defining a position of activation;
a plurality of electrodes mounted on said substrate; and
a processing device for energizing said electrodes;
said electrodes comprise a first electrode located on an upper surface for detecting a change in capacitance; and
a second electrode and a third electrode for detecting a change in resistance; wherein
said electrodes are configured to identify a position of applied pressure by detecting said change in resistance in response to a first energizing signal received from said processing device;
said electrodes are configured to confirm said position of applied pressure by detecting said change in capacitance in response to a second energizing signal received from said processing device; and
said processing device is configured to derive output position data from a combination of said position of applied pressure identified by detecting said change in resistance and said position of applied pressure confirmed by detecting said change in capacitance, said output position data is inhibited when said position of applied pressure by detecting said change in capacitance is not confirmed.