公开(公告)号：US20240118772A1

公开(公告)日：2024-04-11

申请号：US18535693

申请日：2023-12-11

Applicant: Google LLC

Inventor： Xi Chen ,  Changgeng Liu ,  Ion Bita ,  Marek Mienko

IPC: G06F3/042

CPC classification number: G06F3/0421

Abstract: This document describes systems and techniques directed at mitigating display diffraction flares for under-display sensing. In aspects, an equation may be derived that models the effects of a display in producing a diffraction phenomenon at an image plane of a sensing region for an under-display light-sensing device. The equation may be used to determine an arrangement (e.g., an optimized arrangement) of components (e.g., sub-pixels) within the display that minimizes a diffraction efficiency for at least one diffraction order and, thereby, mitigates an intensity and/or a prevalence of optical artifacts in light-sensing data. In implementations, an image intensity point-spread-function is utilized to calculate diffraction efficiencies for respective diffraction orders (e.g., the lowest diffraction orders, the diffraction orders with the greatest brightness).

公开(公告)号：US20250131534A1

公开(公告)日：2025-04-24

申请号：US18999529

申请日：2024-12-23

Applicant: Google LLC

Inventor： Changgeng Liu ,  Marek Mienko ,  Hart Levy ,  Ion Bita ,  Xi Chen

IPC: G06T5/50 ,  G06T5/20 ,  G06T5/60 ,  G06T7/70 ,  H04N23/56 ,  H04N23/90 ,  H04N23/95 ,  H04N25/40 ,  H04N25/532

Abstract: Systems and techniques directed at an electronic device with a centrally located under-display image sensor are disclosed. The electronic device includes a first image sensor and a second image sensor, the second image sensor being an under-display sensor located at substantially a center of a display of the electronic device. The first image sensor may be located adjacent to an edge of the display. The second image sensor is configured to capture an eye gaze of a user and provide the captured eye gaze to correct the eye gaze of images captured by the first image sensor. The first image sensor may also be an under-display image sensor. During video communications with the electronic device, a user usually looks at the center of the display of the electronic device. The second image sensor is configured to capture the correct eye gaze of the user during video communications.

公开(公告)号：US12204723B2

公开(公告)日：2025-01-21

申请号：US18535693

申请日：2023-12-11

Applicant: Google LLC

Inventor： Xi Chen ,  Changgeng Liu ,  Ion Bita ,  Marek Mienko

IPC: H04N25/61 ,  G06F3/042

Abstract: This document describes systems and techniques directed at mitigating display diffraction flares for under-display sensing. In aspects, an equation may be derived that models the effects of a display in producing a diffraction phenomenon at an image plane of a sensing region for an under-display light-sensing device. The equation may be used to determine an arrangement (e.g., an optimized arrangement) of components (e.g., sub-pixels) within the display that minimizes a diffraction efficiency for at least one diffraction order and, thereby, mitigates an intensity and/or a prevalence of optical artifacts in light-sensing data. In implementations, an image intensity point-spread-function is utilized to calculate diffraction efficiencies for respective diffraction orders (e.g., the lowest diffraction orders, the diffraction orders with the greatest brightness).

公开(公告)号：US11978277B2

公开(公告)日：2024-05-07

申请号：US17918955

申请日：2021-07-23

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Marek Mienko

IPC: G06F21/32 ,  G06V10/141 ,  G06V40/13 ,  G09G3/20 ,  G09G3/3208

CPC classification number: G06V40/1318 ,  G06F21/32 ,  G06V10/141 ,  G09G3/2096 ,  G09G3/3208 ,  G09G2310/08 ,  G09G2354/00 ,  G09G2360/14

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for under-display fingerprint sensor timing control are disclosed. A method includes receiving, by fingerprint sensor control circuitry, an indication to activate a fingerprint sensor that is located under a display panel of a computing device, the fingerprint sensor attached with respect to the display panel such that the fingerprint sensor is exposed to light produced by the display panel and reflected off a finger placed over the display panel at a location of the fingerprint sensor; outputting, for receipt by the fingerprint sensor, a start-sensing trigger signal at a start time synchronized with a display panel timing signal that is provided to the display panel to control emission of the display panel; and outputting, for receipt by the fingerprint sensor, a stop-sensing trigger signal at a stop time synchronized with the display panel timing signal.

公开(公告)号：US20230260316A1

公开(公告)日：2023-08-17

申请号：US17918955

申请日：2021-07-23

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Marek Mienko

IPC: G06V40/13 ,  G09G3/3208 ,  G09G3/20 ,  G06V10/141

CPC classification number: G06V40/1318 ,  G06V10/141 ,  G09G3/2096 ,  G09G3/3208 ,  G09G2310/08 ,  G09G2354/00 ,  G09G2360/14

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for under-display fingerprint sensor timing control are disclosed. A method includes receiving, by fingerprint sensor control circuitry, an indication to activate a fingerprint sensor that is located under a display panel of a computing device, the fingerprint sensor attached with respect to the display panel such that the fingerprint sensor is exposed to light produced by the display panel and reflected off a finger placed over the display panel at a location of the fingerprint sensor; outputting, for receipt by the fingerprint sensor, a start-sensing trigger signal at a start time synchronized with a display panel timing signal that is provided to the display panel to control emission of the display panel; and outputting, for receipt by the fingerprint sensor, a stop-sensing trigger signal at a stop time synchronized with the display panel timing signal.