公开(公告)号：US12272306B2

公开(公告)日：2025-04-08

申请号：US18286028

申请日：2022-12-22

Applicant: Google LLC

Inventor： Chien-Hui Wen ,  Daniel Solomon ,  Ken Kok Foo

IPC: G09G3/3233

Abstract: In general, the subject matter described in this disclosure can be embodied in methods, systems, and program products for presenting display content on a display of a computing system. A method includes selecting, from a collection of luminance profiles that are each configured to reduce brightness of the display content in different manners, a first luminance profile based on the current display brightness setting, the first luminance profile specifying a first amount of brightness reduction to a peripheral portion of the display content and a first gradient of brightness reduction for a portion of the display content between the peripheral portion of the display content and a center portion of the display content; applying the first luminance profile to the display content to modify the display content by reducing a brightness of the display content according to the first luminance profile; and presenting the display content on the display.

公开(公告)号：US20240265859A1

公开(公告)日：2024-08-08

申请号：US18620973

申请日：2024-03-28

Applicant: Google LLC

Inventor： Ken Kok Foo ,  John William Kaehler ,  Chien-Hui Wen

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0247 ,  G09G2320/0626 ,  G09G2340/0435

Abstract: A non-transitory computer-readable storage medium can include instructions stored thereon that, when executed by at least one processor, are configured to cause a computing device to determine, in response to a change in a refresh rate of a display, an encoded intensity of at least a portion of an image presented by the display, determine that the encoded intensity is within a predetermined range, and based on determining that the encoded intensity is within the predetermined range, adjust an intensity of a signal for the portion of the image.

公开(公告)号：US20240087494A1

公开(公告)日：2024-03-14

申请号：US18273933

申请日：2021-01-25

Applicant: Google LLC

Inventor： Chien-Hui Wen ,  Hsin-Yu Chen

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2320/0247 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2340/0435

Abstract: A method for calibrating input display data for multiple display refresh rates comprises measuring (1210) an optical property of a display panel for an input gray level at a first refresh rate, measuring (1220) the optical property for a plurality of candidate gray levels at a second refresh rate, selecting (1230), based on the measured optical properties of the display panel, a corresponding gray level for the input gray level, wherein the corresponding gray level is selected from the plurality of candidate gray levels and storing (1240), at the device, the corresponding gray level for the input gray level, wherein subsequent to the storing, the device is configured to adjust input display data using the corresponding gray level for the input gray level when the display panel is transitioning from the first refresh rate to the second refresh rate.

公开(公告)号：US20240062718A1

公开(公告)日：2024-02-22

申请号：US18494398

申请日：2023-10-25

Applicant: Google LLC

Inventor： Jyothi Karri ,  Chien-Hui Wen

IPC: G09G3/3225 ,  G06F3/041 ,  G06V40/13 ,  G06V40/12

CPC classification number: G09G3/3225 ,  G06F3/041 ,  G06V40/1318 ,  G06V40/1365 ,  G09G2340/0435 ,  G09G2354/00 ,  G09G2320/0626

Abstract: This document describes systems and techniques directed at expediting fingerprint authentication via variable refresh rate control and display luminance compensation. In aspects, a computing device having an under-display fingerprint sensor (UDFPS) and a touch-sensitive display includes a biometric authentication manager. Upon detecting at least one finger at or near the touch-sensitive display, the biometric authentication manager implements variable display refresh rates and selectively adjusts luminance settings for a high-luminance region of the touch-sensitive display for predetermined intervals. In so doing, at least one finger can be well-illuminated during UDFPS image capturing, facilitating UDFPS sensing and expediting fingerprint authentication.

公开(公告)号：US20240046874A1

公开(公告)日：2024-02-08

申请号：US18488742

申请日：2023-10-17

Applicant: Google LLC

Inventor： XiaoPing Bai ,  Chien-Hui Wen ,  Ken Kok Foo

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2330/021

Abstract: This document describes systems and techniques directed at compensating for voltage losses in organic light-emitting diode (OLED) displays. In aspects, a computing device having an OLED display and a luminance manager is configured to receive an indication of a luminance that is, or is intended to be, displayed by pixels of the OLED display. Responsive to and based on the received indication of luminance and a voltage loss, the luminance manager determines a luminance modification for the pixels of the OLED display. Based on the determined luminance modification, the luminance manager modifies the luminance that is displayed or modifies the luminance that is intended to be displayed by the pixels of the OLED display effective to compensate for the voltage loss.

公开(公告)号：US20220343820A1

公开(公告)日：2022-10-27

申请号：US17753039

申请日：2019-10-04

Applicant: Google LLC

Inventor： Chien-Hui Wen ,  Yichi Chen ,  Hsin-Yu Chen

IPC: G09G3/20 ,  G06F3/0484

Abstract: An example device includes a display component that is configured to operate at a first refresh rate or a second refresh rate. The device also includes one or more processors operable to perform operations. The operations include identifying a rate change triggering event while the display component is operating at the first refresh rate. The operations further include determining a current brightness value of the display component. The operations also include determining, based on an environmental state measurement associated with an environment around the device, a threshold brightness value. The operations additionally include transitioning the display component from the first refresh rate to the second refresh rate m response to identifying the rate change triggering event if the current brightness value of the display component meets or exceeds the threshold brightness value.

公开(公告)号：US20240169923A1

公开(公告)日：2024-05-23

申请号：US18422652

申请日：2024-01-25

Applicant: Google LLC

Inventor： Sang Young Youn ,  Chien-Hui Wen

IPC: G09G3/3258 ,  G06V40/13 ,  G09G5/10

CPC classification number: G09G3/3258 ,  G06V40/1318 ,  G09G5/10 ,  G09G2320/0626 ,  G09G2360/145

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for brightness control for under-display fingerprint sensor are disclosed. A method includes receiving, at a computing device, an indication to activate an under-display sensor that is located underneath a display of the computing device; activating a collection of LEDs of the display to provide illumination for the under-display sensor, including activating an LED in the collection of LEDs by: establishing, by drive circuitry of the LED, a first overdriven voltage across an LED-driving transistor that is arranged to energize the LED; establishing a second overdriven voltage across the LED-driving transistor; and establishing a steady state voltage across the LED-driving transistor; and activating the under-display sensor by reading a signal from the under-display sensor once the collection of LEDs has activated, including once the steady state voltage has been programmed across the LED-driving transistor.

公开(公告)号：US20230351952A1

公开(公告)日：2023-11-02

申请号：US18126874

申请日：2023-03-27

Applicant: Google LLC

Inventor： Chien-Hui Wen ,  Yi Tao

IPC: G09G3/3208 ,  G09G3/00

CPC classification number: G09G3/3208 ,  G09G3/035 ,  G09G2320/0233 ,  G09G2320/0626

Abstract: This document describes systems and techniques directed at compensating for non-uniform luminance in curved-edge displays. In aspects, a computing device having a curved-edge display and a luminance manager is configured to receive an indication of a luminance that is, or is intended to be, displayed by pixels of the curved-edge display. Responsive to and based on the received indication of the luminance and a non-uniform luminance, the luminance manager determines a luminance modification for the pixels of the curved-edge display. Based on the determined luminance modification, the luminance manager modifies the luminance that is displayed or modifies the intended luminance that is intended to be displayed by pixels of the curved-edge display effective to compensate for the non-uniform luminance.

公开(公告)号：US20230274573A1

公开(公告)日：2023-08-31

申请号：US18313138

申请日：2023-05-05

Applicant: Google LLC

Inventor： Hyunchul Kim ,  Chien-Hui Wen

IPC: G06V40/13 ,  G09G3/3208

CPC classification number: G06V40/1318 ,  G09G3/3208 ,  G09G2320/0633 ,  G09G2320/064

Abstract: This document describes systems and techniques for spatially and temporally dynamic illumination for fingerprint authentication. In aspects, a method is disclosed that involves receiving user input at a display of an electronic device, initiating biometric authentication, and instructing a display-driver integrated circuit (DDIC) to implement a local high-brightness mode, which causes a predetermined portion of the display to increase in luminance to a target luminance for at least a first interval and a second interval. The DDIC is also instructed to cause a variable portion of the display to increase in luminance for the first interval and, at the expiration of the first interval, decrease luminance. During the first and/or second interval, an under-display fingerprint sensor captures one or more images. It is then determined, based on analysis of the one or more images, whether the user input is indicative of an authorized user.

公开(公告)号：US20220270547A1

公开(公告)日：2022-08-25

申请号：US17593414

申请日：2020-08-21

Applicant: GOOGLE LLC

Inventor： Ken Kok Foo ,  John William Kaehler ,  Chien-Hui Wen

IPC: G09G3/3208

Abstract: A non-transitory computer-readable storage medium can include instructions stored thereon that, when executed by at least one processor, are configured to cause a computing device to determine, in response to a change in a refresh rate of a display, an encoded intensity of at least a portion of an image presented by the display, determine that the encoded intensity is within a predetermined range, and based on determining that the encoded intensity is within the predetermined range, adjust an intensity of a signal for the portion of the image.