US 12,271,550 B2
Multi-frequency character transmission and detection
Kevin Joseph Derichs, Buda, TX (US)
Assigned to SIGMASENSE, LLC., Austin, TX (US)
Filed by SIGMASENSE, LLC., Wilmington, DE (US)
Filed on Apr. 27, 2023, as Appl. No. 18/140,002.
Claims priority of provisional application 63/335,795, filed on Apr. 28, 2022.
Prior Publication US 2023/0350519 A1, Nov. 2, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/04162 (2019.05); G06F 3/04164 (2019.05); G06F 3/0446 (2019.05)] 20 Claims
OG exemplary drawing
 
1. A touch sensor device (TSD) comprising:
a panel that includes a first plurality of electrodes arranged in a first direction and a second plurality of electrodes arranged in a second direction;
a first drive-sense circuit (DSC) operably coupled via a first single line to a first electrode of the first plurality of electrodes, the first DSC configured to:
generate a first signal based on a first reference signal;
provide the first signal via the first single line to the first electrode of the first plurality of electrodes and simultaneously to sense the first signal via the first single line, wherein sensing of the first signal includes detection of at least one of a first electrical characteristic of the first electrode or a first change of the first signal; and
generate a first digital signal representative of the at least one of the first electrical characteristic of the first electrode of the first plurality of electrodes or the first change of the first signal; and
a second DSC operably coupled via a second single line to a channel of the panel that is not implemented for touch sensing functionality, the second DSC configured to:
generate a second signal based on a second reference signal;
provide the second signal via the second single line to the channel of the panel that is not implemented for touch sensing functionality and simultaneously to sense the second signal via the second single line, wherein sensing of the second signal includes detection of coupling of another signal into the channel of the panel that is not implemented for touch sensing functionality in accordance with digital data communication from another device to the TSD; and
generate a second digital signal representative of the coupling of the another signal into the channel of the panel that is not implemented for touch sensing functionality in accordance with digital data communication from the another device to the TSD.