US 11,726,626 B2
Device for use with a touch screen
Daniel Keith Van Ostrand, Leander, TX (US); and Michael Shawn Gray, Dripping Springs, TX (US)
Assigned to SigmaSense, LLC., Wilmington, DE (US)
Filed by SigmaSense, LLC., Wilmington, DE (US)
Filed on Dec. 27, 2021, as Appl. No. 17/646,041.
Application 17/646,041 is a continuation of application No. 16/436,746, filed on Jun. 10, 2019, granted, now 11,216,133.
Prior Publication US 2022/0121323 A1, Apr. 21, 2022
Int. Cl. G06F 3/044 (2006.01); H03K 17/96 (2006.01); G06F 3/0354 (2013.01); G06F 3/04883 (2022.01)
CPC G06F 3/0446 (2019.05) [G06F 3/03547 (2013.01); G06F 3/04883 (2013.01); H03K 17/962 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A device for interacting with a touch screen, the device comprises:
an AC coupling circuit operable to:
receive a sense signal from the touch screen, wherein the sense signal includes a representation of receive data; and
transmit a transmit signal to the touch screen, wherein the touch screen is capable of interpreting the transmit signal as an input to the touch screen;
a sense-regulation circuit operable to:
receive the sense signal from the AC coupling circuit;
generate a comparison signal based on the sense signal and a reference signal, wherein the reference signal includes a representation of the transmit data;
generate a receive error signal based on the comparison signal, wherein the receive error signal corresponds to the representation of receive data; and
convert the representation of transmit data into the transmit signal;
an inbound data processing module operable to convert transmit data into the representation of transmit data; and
an outbound data processing module operable to convert the receive error signal into the receive data.