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：US20230266832A1

公开(公告)日：2023-08-24

申请号：US18006860

申请日：2020-08-26

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Fred Charles Thomas, III ,  Cheng Huang ,  Bruce Eric Blaho ,  Mario E. Campos ,  Christian M. Damir ,  J. Michael Stahl

IPC: G06F3/0354 ,  G06F3/042 ,  G06F3/039

CPC classification number: G06F3/03542 ,  G06F3/0421 ,  G06F3/0395

Abstract: An example touch/pen (T/P) sensor device includes a T/P sensor to generate position information based on user interaction with a sensor surface of the T/P sensor, and a color sensor to sense a color hue of a writing tip of a pencil to be used to interact with the sensor surface of the T/P sensor to generate a digital image. The T/P sensor device also includes a processor to record metadata with the digital image to indicate the sensed color hue.

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.

公开(公告)号：US20230176703A1

公开(公告)日：2023-06-08

申请号：US17922566

申请日：2020-04-30

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

Inventor： Fred Charles Thomas, III ,  Christian M. Damir ,  Robert Scott Rawlings ,  Mario E. Campos ,  Cheng Huang ,  Bruce Eric Blaho

IPC: G06F3/044

CPC classification number: G06F3/0446 ,  G06F3/0445 ,  G06F3/0447

Abstract: An example of a flexible sensor stack includes a flexible film comprising a conformal polymer film or a flexible glass film. The flexible sensor stack includes first and second conformal poly(3,4-ethylenedioxythiophene) (PEDOT) films formed over the flexible film and including sensor traces to provide a flexible touch/pen (T/P) sensor surface, wherein the flexible sensor stack is bendable to conform to a non-flat attachment surface.