Apple Inc.

Arthur L Spence

Christopher P Tann

Guy Cote

Peter F Holland

Chendi Zhang

Ross Thompson

Paolo Sacchetto

Jean-Pierre Simon Guillou

Jeremy Sandmel

David Michael Chan

Peter C Tsoi

Yifan Zhang

Vanessa Cristina Heppolette

Jerrold Von Hauck

Chaohao Wang

Brijesh Tripathi

Ian C Hendry

Mahesh B Chappalli

Mohammad Ali Jangda

Paul Stephen Drzaic

Joshua P De Cesare

Tae-Wook Koh

Ardra Singh

Jim Chen Chou

Timothy John Millet

Manu Gulati

Hyunwoo Nho

Yafei Bi

Kingsuk Brahma

Jie Won Ryu

Patrick Y Law

Brad W Simeral

Marc Joseph DeVincentis

Gurjeet S Saund

Amit K Vyas

Roy Gideon Moss

Abhinav Pathak

Jenny Hu

Ilie Garbacea

Christopher Edward Glazowski

Jacob Z Weiss

Honkai Tam

Albert S Liu

Adria Fores Herranz

Yue Jack Chu

Brent W Schorsch

Paul M Thompson

Conor J O'Reilly

Malcolm D Gray

Rohit Mundra

Roberto Alvarez

David A Hartley

Shawn P Hurley

Shashi K Dua

Udaykumar R Raval

Robert P Esser

Giovanni Corradini

Jongyup Lim

Christopher W Chaney

Asha G Karvaje

Vladislav Sahnovich

Wei Hsin Yao

Giovanni M Agnoli

Marc Albrecht

Jiaying Wu

Ali Sazegari

Weijun Yao

Francisco H Imai

Russell Alexader Blaine

Ari Y Benbasat

Hyunsoo Kim

Koorosh Aflatooni

Guy Côté

Chun Lu

Jiayi Jin

Simon M Douglas

Yingying Tang

Chengrui Le

Jason N Gomez

Yiqiang Nie

Graeme M Williams

Lars M Lindberg

Alex H Pai

Haifeng Li

Gihoon Choo

Eran Tamari

Alexey Kornienko

Ruo-Gu Huang

Daniel J Drusch

Wanqing Xin

Yang Xu

Chi Zhang

Prajakta S Karandikar

Zhe Hua

Steven S Noble

Kevin W Sliech

Alexandre V Gauthier

Alan M Dunn

Han Ming Ong

Adam J Machalek

To reduce overall power consumption for an electronic display power management integrated circuit (PMIC), one of multiple electric power converters and/or electric power regulators may be selected based on an electrical load (e.g., due to the total brightness of the content displayed) on the electronic display at a given moment. In some embodiments, the PMIC may include a less efficient heavy load converter designed with high-current handling capability and a more efficient light load (e.g., low current) converter with lower current handling capability. A controller may dynamically select between the converters depending on a present load or an expected load on the electronic display.

Content-aware dynamic power converter switching for power optimization

Systems and methods are described herein to control brightness based on image content or other inputs to a display system. A dual-control system may integrate both slow control operations and fast control operations into a cohesive brightness management system. By using both shorter-term (e.g., fast control) and longer-term (e.g., slow control) brightness adjustment operations, the electronic device may quickly respond to high luminance and high brightness situations that may cause burn-in into the display, image artifacts, or other damage. Responding quickly to these high consumption situations may prevent damage or perceivable upset to an ongoing process, among other benefits.

Content dependent brightness management system

Direct access to device functionality from a low power state of the device is provided. The direct access can be provided without an initial user input to wake the device or the display of the device before activating the desired functionality. The low power state of the device may include a low power state of the display in which the time is persistently displayed, and may include a low power state or an inactive state of a main processor of the device. The direct access can be provided by detecting a type, location, or other aspects of a user input received while the device is in the low power state.

Direct access to wake state device functionality from a low power state

An electronic device may include processing circuitry configured to generate a first frame of image content and a second frame of image content. The second frame of image content is different from the first frame of image content. The electronic device may also include a display configured to display the first frame of image content at a first refresh rate. In response to receiving the second frame of image content, the electronic device may initially increase the refresh rate before tapering back to the first refresh rate while displaying the second frame of image content.

Frame insertion and frame rate sequencing for panel glitch prevention

An electronic device includes a display panel and image processing circuitry. The image processing circuitry receives input image data corresponding to an image to display on the display panel, modifies the input image data by executing a first context task (e.g., lower priority task), and receives a context switch request. The image processing circuitry also pauses modification of the input image data by pausing execution of the first context task and then switches to modifying the input image data by executing a second context task (e.g., higher priority task).

Low-latency context switch systems and methods

A device implementing a system for displaying an image includes a processor configured to, generate, during a first power state of a device, a data structure specifying image frames and a respective display time for each of the image frames, and retrieve, during a second power state of the device and from the data structure, an image frame based on the respective display time for the image frame. The at least one processor is further configured to display, during a third power state of the device, the retrieved image frame on a display of the device.

Power management for image display

In an embodiment, an electronic device includes an electronic display. The electronic display provides a programmable latency period in response to receiving a first image frame corresponding to first image frame data. The electronic display also displays the first image frame after the programmable latency period and during display of the first image frame, receives a second image frame corresponding to second image frame data. The electronic display also repeats display of the first image frame in response to receiving the second image frame.

Preemptive refresh for reduced display judder

One embodiment provides for a display system to generate and display data on a display device, the display system comprising one or more graphics processors to generate one or more frames of data for display on the display device; a window manager to submit a request to display the one or more frames of data; a display engine to present the one or more frames of data to the display device for display; and display logic to receive the request to display the one or more frames of data and generate one or more display events for the display engine based on the request to display the one or more frames of data, wherein the display logic is to manage a set of statistics associated with the request.

Controlling display performance using display statistics and feedback

Systems, apparatuses, and methods for implementing a timestamp based display update mechanism. A display control unit includes a timestamp queue for storing timestamps, wherein each timestamp indicates when a corresponding frame configuration set should be fetched from memory. At pre-defined intervals, the display control unit may compare the timestamp of the topmost entry of the timestamp queue to a global timer value. If the timestamp is earlier than the global timer value, the display control unit may pop the timestamp entry and fetch the frame next configuration set from memory. The display control unit may then apply the updates of the frame configuration set to its pixel processing elements. After applying the updates, the display control unit may fetch and process the source pixel data and then drive the pixels of the next frame to the display.

Timestamp based display update mechanism

Circuits, methods, and apparatus that may estimate the power being consumed by an OLED display screen of an electronic device, may provide further information about that power usage, may modify or change functions performed by the electronic device based on that power usage, and may inform an application's developer about the amount of power being used by the electronic device while the electronic device is running the application. One example may estimate the power being used by an OLED display screen of an electronic device by determining the content of images being displayed during a duration. The estimated power may then be presented to a user. The estimated power may be used in decisions to modify or change parameters of the screen or other device components.

Graphically providing OLED display power modeling

In situations with reduced image changes, display panels, such as the ones disclosed herein, may reduce their power consumption by performing self-refresh cycles, in which they may display locally stored data in the display panel instead of retrieving it from an image buffer. Methods and circuitry for management of the self-refresh cycle may reduce jitter, luminance errors, and/or flickers that may be caused by untimely self-refresh cycles that may occur as a result of latency in the image buffer. In some implementations, the display panel may have a dedicated low latency input that notifies an arrival of an incoming image. In some implementations, the self-refresh cycles of the panel may be managed by a host or a buffer that is responsible for sending the images.

Collision avoidance schemes for displays

Aspects of the subject technology relate to electronic devices with displays and ambient light sensors. An electronic device modifies the color of images to be displayed based on measured ambient light color. The modification is performed in a perceptually uniform color space and includes a determination of a bleaching effect of reflected ambient light, and a determination of a color correction factor to be applied within the perceptually uniform color space, based on the determined bleaching effect. The modification may also include an application of a strength factor that mitigates out-of-gamut colors in color compensated images.

Ambient light color compensation systems and methods for electronic device displays

Embodiments provide for a display system to generate and display data on a display device, the display system comprising one or more graphics processors to generate one or more frames of data for display on the display device; a display engine to present the one or more frames of data to the display device for display; display logic to receive a request to display the one or more frames of data and generate one or more display events for the display engine based on the request, wherein the request includes a first hint to indicate a complexity of the one or more frames of data and the one or more display events includes a second hint derived from the first hint; and a performance controller to adjust one or more performance related parameters for the display system based on the second hint.

Controlling display performance using display system hints

Growing community of inventors

San Jose, CA, United States of America

Arthur L Spence