US 12,223,149 B2
Pen for use with a touch screen
Daniel Keith Van Ostrand, Leander, TX (US); and Michael Shawn Gray, Elgin, TX (US)
Assigned to SIGMASENSE, LLC., Austin, TX (US)
Filed by SIGMASENSE, LLC., Wilmington, DE (US)
Filed on Jun. 23, 2023, as Appl. No. 18/213,585.
Application 18/213,585 is a continuation of application No. 17/646,041, filed on Dec. 27, 2021, granted, now 11,726,626.
Application 17/646,041 is a continuation of application No. 16/436,746, filed on Jun. 10, 2019, granted, now 11,216,133, issued on Jan. 4, 2022.
Prior Publication US 2023/0359312 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/044 (2006.01); G06F 3/0354 (2013.01); G06F 3/04883 (2022.01); H03K 17/96 (2006.01)
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 pen for interacting with a touch screen, the pen comprises:
an alternating current (AC) coupling circuit comprising:
a first AC coupling circuit operable to receive a sense signal from the touch screen, wherein the first AC coupling circuit is physically located at a first location of the pen; and
a second AC coupling circuit operable to transmit a transmit signal to the touch screen, wherein the second AC coupling circuit is physically located at a second location of the pen, wherein the touch screen is capable of discerning between the first and second locations, and wherein the touch screen is capable of interpreting the transmit signal as an input to the touch screen; and
a sense-regulation circuit operable to:
receive the sense signal from the AC coupling circuit;
receive a representation of transmit data; and
convert the representation of the transmit data into the transmit signal.