公开(公告)号：US20230078235A1

公开(公告)日：2023-03-16

申请号：US17588114

申请日：2022-01-28

Applicant: Apple Inc.

Inventor： Sorin Constantin Cismas ,  Ali Sazegari ,  Christian Thomas Martelock ,  Guy Cote

IPC: G06T9/00 ,  G06T7/11

Abstract: Compression techniques are described. In an embodiment, a first plane of sensor data is accessed, the first plane of sensor data is divided into a plurality of slices, each sample is encoded in each slice from the plurality of slices, where encoding a sample include computing a median based prediction for the sample, computing an error for the sample comprising a difference between the sample and the computed median based prediction, determining a context for the sample, selecting a model for the sample by using the determined context, and encoding the computed error by using the selected model.

公开(公告)号：US11043018B2

公开(公告)日：2021-06-22

申请号：US16662952

申请日：2019-10-24

Applicant: Apple Inc.

Inventor： Arthur Y Zhang ,  Ray L. Chang ,  Timothy R. Oriol ,  Ling Su ,  Gurjeet S. Saund ,  Guy Cote ,  Jim C. Chou ,  Hao Pan ,  Tobias Eble ,  Avi Bar-Zeev ,  Sheng Zhang ,  Justin A. Hensley ,  Geoffrey Stahl

IPC: G06F3/01 ,  G06T15/00 ,  H04W76/10 ,  G06T3/00 ,  G06T9/00 ,  H04W88/08

Abstract: A mixed reality system that includes a device and a base station that communicate via a wireless connection The device may include sensors that collect information about the user's environment and about the user. The information collected by the sensors may be transmitted to the base station via the wireless connection. The base station renders frames or slices based at least in part on the sensor information received from the device, encodes the frames or slices, and transmits the compressed frames or slices to the device for decoding and display. The base station may provide more computing power than conventional stand-alone systems, and the wireless connection does not tether the device to the base station as in conventional tethered systems. The system may implement methods and apparatus to maintain a target frame rate through the wireless link and to minimize latency in frame rendering, transmittal, and display.

公开(公告)号：US11024243B2

公开(公告)日：2021-06-01

申请号：US17034894

申请日：2020-09-28

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Brijesh Tripathi ,  Christopher Philip Alan Tann ,  David S. Zalatimo ,  Guy Cote ,  Hao Nan ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz

IPC: G09G3/36

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.

公开(公告)号：US20210012733A1

公开(公告)日：2021-01-14

申请号：US17034894

申请日：2020-09-28

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Brijesh Tripathi ,  Christopher Philip Alan Tann ,  David S. Zalatimo ,  Guy Cote ,  Hao Nan ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz

IPC: G09G3/36

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.

公开(公告)号：US10694129B2

公开(公告)日：2020-06-23

申请号：US14679126

申请日：2015-04-06

Applicant: Apple Inc.

Inventor： Guy Cote ,  Simon Wolfenden Butler ,  Joseph Anthony Petolino, Jr. ,  Joseph P. Bratt

IPC: G06K9/00 ,  H04N5/367 ,  H04N9/04 ,  H04N9/64 ,  H04N5/232 ,  H04N5/365 ,  H04N1/60 ,  G06T5/00 ,  H04N9/77

Abstract: Systems and methods for down-scaling are provided. In one example, a method for processing image data includes determining a plurality of output pixel locations using a position value stored by a position register, using the current position value to select a center input pixel from the image data and selecting an index value, selecting a set of input pixels adjacent to the center input pixel, selecting a set of filtering coefficients from a filter coefficient lookup table using the index value, filtering the set of source input pixels to apply a respective one of the set of filtering coefficients to each of the set of source input pixels to determine an output value for the current output pixel at the current position value, and correcting chromatic aberrations in the set of source input pixels.

公开(公告)号：US20200099942A1

公开(公告)日：2020-03-26

申请号：US16583153

申请日：2019-09-25

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  Yeping Su ,  Khaled Mammou ,  Jungsun Kim ,  David W. Singer ,  Fabrice A. Robinet ,  Guy Cote ,  Jim C. Chou ,  Hsi-Jung Wu

IPC: H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/159

Abstract: Support for additional components may be specified in a coding scheme for image data. A layer of a coding scheme that specifies color components may also specify additional components. Characteristics of the components may be specified in the same layer or a different layer of the coding scheme. An encoder or decoder may identify the specified components and determine the respective characteristics to perform encoding and decoding of image data.

公开(公告)号：US20200058152A1

公开(公告)日：2020-02-20

申请号：US16662952

申请日：2019-10-24

Applicant: Apple Inc.

Inventor： Arthur Y. Zhang ,  Ray L. Chang ,  Timothy R. Oriol ,  Ling Su ,  Gurjeet S. Saund ,  Guy Cote ,  Jim C. Chou ,  Hao Pan ,  Tobias Eble ,  Avi Bar-Zeev ,  Sheng Zhang ,  Justin A. Hensley ,  Geoffrey Stahl

IPC: G06T15/00 ,  G06T3/00 ,  G06T9/00 ,  G06F3/01 ,  H04W76/10

Abstract: A mixed reality system that includes a device and a base station that communicate via a wireless connection The device may include sensors that collect information about the user's environment and about the user. The information collected by the sensors may be transmitted to the base station via the wireless connection. The base station renders frames or slices based at least in part on the sensor information received from the device, encodes the frames or slices, and transmits the compressed frames or slices to the device for decoding and display. The base station may provide more computing power than conventional stand-alone systems, and the wireless connection does not tether the device to the base station as in conventional tethered systems. The system may implement methods and apparatus to maintain a target frame rate through the wireless link and to minimize latency in frame rendering, transmittal, and display.

公开(公告)号：US10438564B2

公开(公告)日：2019-10-08

申请号：US16005320

申请日：2018-06-11

Applicant: Apple Inc.

Inventor： Guy Cote ,  Mahesh B. Chappalli ,  Venu M. Duggineni

IPC: G09G5/10 ,  G09G3/3225 ,  G09G5/30 ,  G09G3/20 ,  G09G3/34

Abstract: An electronic display includes a display side and an ambient light sensor configured to measure received light received through the display side. The electronic display also includes multiple pixels located between the display side and the ambient light sensor. The multiple pixels are configured to emit display light through the display side.

公开(公告)号：US10410569B2

公开(公告)日：2019-09-10

申请号：US15874821

申请日：2018-01-18

Applicant: Apple Inc.

Inventor： Paul S. Drzaic ,  Ross Thompson ,  Guy Cote ,  Christopher P. Tann ,  Jerrold V. Hauck ,  Yifan Zhang ,  Jean-Pierre Guillou ,  Ian C. Hendry ,  Vanessa C. Heppolette ,  Tae-Wook Koh ,  Arthur L. Spence

IPC: G09G3/20 ,  G09G3/00 ,  G06F3/06 ,  G09G3/3208 ,  G06F9/4401 ,  G09G3/32 ,  G06F9/451

Abstract: A data processing system can store a long-term history of pixel luminance values in a secure memory and use those values to create burn-in compensation values that are used to mitigate burn-in effect on a display. The long-term history can be updated over time with new, accumulated pixel luminance values.

公开(公告)号：US10403192B2

公开(公告)日：2019-09-03

申请号：US15655591

申请日：2017-07-20

Applicant: APPLE INC.

Inventor： Marc Albrecht ,  Mahesh B. Chappalli ,  Christopher P. Tann ,  Jim C. Chou ,  Guy Cote

IPC: G09G3/20 ,  G09G3/32 ,  G09G3/36 ,  G09G3/3208

Abstract: Devices and methods for error diffusion and spatiotemporal dithering are provided. By way of example, a method of operating a display includes receiving a pixel input, a set of pixel coordinates, and a current frame number. A kernel and a particular kernel bit of the kernel is selected from a set of kernels, based upon the pixel input, the pixel coordinates, the frame number, or any combination thereof. A dithered output is determined based at least in part upon the kernel bit. When the display is in a diamond pixel configuration, the dithered output is applied in accordance with a diamond pattern formed by red, blue, or red and blue pixel channels.