Patent ID: 11907450
Assignee: SIGMASENSE, LLC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A system including an electronic pen (e-pen) and a touch sensor device comprising:
the e-pen that includes one or more e-pen sensor electrodes;
the touch sensor device including a drive-sense circuit (DSC) operably coupled to a touch sensor electrode of the touch sensor device via a single line, wherein, when enabled, the DSC configured to:
drive a touch sensor signal via the single line coupling to the touch sensor electrode of the touch sensor device and simultaneously sense, via the single line, change of the touch sensor signal based on interaction of the e-pen with the touch sensor electrode of the touch sensor device; and
process the change of the touch sensor signal to generate a digital signal that is representative of an electrical characteristic of the touch sensor electrode;

a memory that stores operational instructions;
a processing module operably coupled to the DSC and to the memory, wherein, when enabled, the processing module is configured to execute the operational instructions to:
process the digital signal to detect the interaction of the e-pen with the touch sensor electrode of the touch sensor device and to determine whether the e-pen is an independent e-pen or a dependent e-pen that is dependent on the touch sensor device; and
facilitate operation of the e-pen with the touch sensor device based on a determination of the e-pen being the independent e-pen or the dependent e-pen that is dependent on the touch sensor device; and

the e-pen, when enabled, is configured to:
transmit first information to the touch sensor device using a first signal that includes a first frequency; and
transmit second information to the touch sensor device using a second signal that includes a second frequency.