公开(公告)号：US11836304B2

公开(公告)日：2023-12-05

申请号：US17922541

申请日：2020-04-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Fred Charles Thomas, III ,  Paul Mazurkiewicz ,  Bruce Eric Blaho

IPC: G06F3/0354 ,  G06F3/044 ,  G06F3/041

CPC classification number: G06F3/03545 ,  G06F3/0442

Abstract: An example electronic device includes an active digital pen sensor surface to generate analog position information, wherein the active digital pen sensor surface includes a projective capacitive sensor layer with a variance of sheet resistance of less than plus or minus 20 percent. The electronic device also includes a controller, including a sigma-delta analog-to-digital (A-to-D) converter, to generate digital pen position information based on the analog position information, and perform a triangulation based on the digital pen position information to determine a pen position.

公开(公告)号：US20230205328A1

公开(公告)日：2023-06-29

申请号：US17922541

申请日：2020-04-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Fred Charles Thomas, III ,  Paul Mazurkiewicz ,  Bruce Eric Blaho

IPC: G06F3/0354 ,  G06F3/044

CPC classification number: G06F3/03545 ,  G06F3/0442

Abstract: An example electronic device includes an active digital pen sensor surface to generate analog position information, wherein the active digital pen sensor surface includes a projective capacitive sensor layer with a variance of sheet resistance of less than plus or minus 20 percent. The electronic device also includes a controller, including a sigma-delta analog-to-digital (A-to-D) converter, to generate digital pen position information based on the analog position information, and perform a triangulation based on the digital pen position information to determine a pen position.