09459746 is referenced by 79 patents and cites 30 patents.

A capacitive touch sensor system and method incorporating an interpolated sensor array is disclosed. The system and method utilize a touch sensor array (TSA) configured to detect proximity/contact/pressure (PCP) via a variable impedance array (VIA) electrically coupling interlinked impedance columns (IIC) coupled to an array column driver (ACD), and interlinked impedance rows (IIR) coupled to an array row sensor (ARS). The ACD is configured to select the IIC based on a column switching register (CSR) and electrically drive the IIC using a column driving source (CDS). The VIA conveys current from the driven IIC to the IIC sensed by the ARS. The ARS selects the IIR within the TSA and electrically senses the IIR state based on a row switching register (RSR). Interpolation of ARS sensed current/voltage allows accurate detection of TSA PCP and/or spatial location.

Title
Capacitive touch sensor system and method
Application Number
14/499090
Publication Number
9459746 (B2)
Application Date
September 27, 2014
Publication Date
October 4, 2016
Inventor
John Aaron Zarraga
San Francisco
CA, US
Ilya Daniel Rosenberg
Mountain View
CA, US
Agent
Carstens & Cahoon
Kevin M Klughart
James R Gourley
Assignee
Sensel
CA, US
IPC
G06F 3/0354
G06F 3/046
G06F 3/041
G06F 3/045
G06F 3/047
G06F 3/044
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