US 12,242,699 B2
Touch sensitive panel supporting capacitively coupled identification code
Richard Stuart Seger, Jr., Belton, TX (US); Michael Shawn Gray, Elgin, TX (US); Daniel Keith Van Ostrand, Leander, TX (US); Patrick Troy Gray, Cedar Park, TX (US); and Timothy W. Markison, Mesa, AZ (US)
Assigned to SIGMASENSE, LLC., Austin, TX (US)
Filed by SIGMASENSE, LLC., Wilmington, DE (US)
Filed on Jul. 3, 2023, as Appl. No. 18/217,686.
Application 18/217,686 is a continuation of application No. 17/305,973, filed on Jul. 19, 2021, granted, now 11,733,818.
Prior Publication US 2023/0350527 A1, Nov. 2, 2023
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0446 (2019.05) [G06F 3/04162 (2019.05); G06F 3/04166 (2019.05); G06F 3/0418 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use in a touch-sensitive panel, the method comprising:
generating electric fields by applying drive signals to a plurality of row electrodes and a plurality of column electrodes included in the touch-sensitive panel;
sensing at least one information signal capacitively coupled to the touch-sensitive panel by detecting impedance changes associated with the plurality of row electrodes and the plurality of column electrodes, wherein detecting impedance changes includes:
applying a first sensing frequency to a first electrode;
detecting a first impedance change in the first electrode caused by a particular information signal;
applying a second sensing frequency to a second electrode; and
detecting a second impedance change in the second electrode caused by the particular information signal;
converting the impedance changes to received data;
determining, based on the received data, a transmission pattern associated with the at least one information signal; and
determining that the transmission pattern corresponds to an identification code.