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公开(公告)号：US20160277706A1
公开(公告)日：2016-09-22
申请号：US14659723
申请日：2015-03-17
Applicant: APPLE INC.
Inventor： Christopher P. Tann , Chaohao Wang , David S. Zalatimo , Marc Albrecht , Paolo Sacchetto , Sandro H. Pintz , Satish S. Iyengar
CPC classification number: H04N7/0127 , G06F1/3218 , G06F1/3265 , G09G5/001 , G09G2330/021 , H04N7/0115 , Y02D10/153
Abstract: Systems and methods for controlling operation of an electronic display are provided. One embodiment describes an electronic display, which includes a display driver that writes image frames to pixels of the electronic display with a first refresh rate or a second refresh rate; and a timing controller that receives a plurality of image frames from an image source, in which the plurality of image frames are displayed on the electronic display to play video content; detects a cadence with which the plurality of image frames are received from the image source; and, based at least in part on the cadence of the plurality of image frames, instructs the display driver to write each of the plurality of image frames either as a single image frame at the first refresh rate or an image frame at the first refresh rate followed by a repeat of the image frame at the second refresh rate.
Abstract translation: 提供了一种用于控制电子显示器操作的系统和方法。 一个实施例描述了一种电子显示器，其包括以第一刷新率或第二刷新率将图像帧写入电子显示器的像素的显示驱动器; 以及定时控制器，其从图像源接收多个图像帧，其中所述多个图像帧在所述电子显示器上显示以播放视频内容; 从图像源检测接收到多个图像帧的节奏; 并且至少部分地基于多个图像帧的节奏，指示显示驱动器将多个图像帧中的每一个作为第一刷新率的单个图像帧或以第一刷新率的图像帧进行写入 随后以第二刷新率重复图像帧。
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公开(公告)号：US20160246430A1
公开(公告)日：2016-08-25
申请号：US14630280
申请日：2015-02-24
Applicant: APPLE INC.
Inventor： Chaohao Wang , Paolo Sacchetto , Zhibing Ge , Cheng Chen , Shih-Chyuan Fan Jiang
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044 , G09G3/2011 , G09G3/3648 , G09G5/12 , G09G2310/027 , G09G2320/0266 , G09G2320/0271 , G09G2320/103 , G09G2340/16
Abstract: One embodiment describes an electronic display. The electronic display includes display driver circuitry that display an image frame on the electronic device using a first display pixel and a second display pixel, touch sensing circuitry that detect user interaction with the electronic display, and a timing controller. The timing controller receives image data, in which the image data describes a target grayscale value of the first pixel and the second pixel to display the image frame, instructs the display driver circuitry to display a first portion of the image frame by writing the image data to the first display pixel, instructs the touch sensing circuitry to determine whether a user touch is present on a surface of the electronic display after the first portion of the image frame is displayed, determines grayscale value displayed by the second display pixel to display a previous image frame, and instructs the display driver circuitry to display a second portion of the image frame by writing adjusted image data to the second display pixel when the displayed grayscale value differs from the target grayscale value of the second pixel by more than a threshold amount.
Abstract translation: 一个实施例描述了电子显示器。 电子显示器包括使用第一显示像素和第二显示像素在电子设备上显示图像帧的显示驱动器电路，检测用户与电子显示器的交互的触摸感测电路以及定时控制器。 定时控制器接收图像数据，其中图像数据描述第一像素的目标灰度值和用于显示图像帧的第二像素，指示显示驱动器电路通过写入图像数据来显示图像帧的第一部分 指示触摸感测电路在显示图像帧的第一部分之后确定用户触摸是否存在于电子显示器的表面上，确定由第二显示像素显示的灰度值以显示前一个 并且当显示的灰度值与第二像素的目标灰度值不同于阈值时，通过将调整后的图像数据写入第二显示像素来指示显示驱动器电路显示图像帧的第二部分。
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公开(公告)号：US20160125785A1
公开(公告)日：2016-05-05
申请号：US14527672
申请日：2014-10-29
Applicant: Apple Inc.
Inventor： Chaohao Wang , Cheng Chen , Shih-Chyuan Fan Jiang , Zhibing Ge
CPC classification number: G09G5/02 , G09G3/3648 , G09G5/001 , G09G5/391 , G09G2320/103 , G09G2340/0435
Abstract: A display may have an array of pixels. The display may be controlled using display driver circuitry. The display driver circuitry may analyze image data to be displayed on the array. When static content is detected, the rate at which the pixels are refreshed may be adjusted to conserve power. If a static image is detected, the gate lines may be asserted at a lower refresh rate than if moving content is detected. To avoid visible artifacts, the display driver circuitry may use temporal and spatial refresh rate buffers. Temporal buffers ensure that refresh rates are changed gradually as a function of time, thereby minimizing flicker. Spatial refresh rate buffers are used to provide a smooth transition between low refresh rate and high refresh rate regions in a display as a function of position.
Abstract translation: 显示器可以具有像素阵列。 可以使用显示驱动器电路来控制显示。 显示驱动器电路可以分析要在阵列上显示的图像数据。 当检测到静态内容时，可以调整像素刷新的速率以节省功率。 如果检测到静态图像，则可以以比检测到移动内容更低的刷新率来确定栅极线。 为了避免可见的伪影，显示驱动器电路可以使用时间和空间刷新率缓冲器。 时间缓冲器确保刷新率随着时间的推移而逐渐变化，从而使闪烁最小化。 空间刷新率缓冲器用于提供作为位置的函数的显示器中的低刷新率和高刷新频率区域之间的平滑过渡。
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公开(公告)号：US20160093239A1
公开(公告)日：2016-03-31
申请号：US14500646
申请日：2014-09-29
Applicant: APPLE INC.
Inventor： Chaohao Wang , Louis Luh , Jun Qi , Cheng Chen , Jun Jiang , Paolo Sacchetto , Marc Albrecht
CPC classification number: G06F1/32 , G09G5/003 , G09G2320/0247 , G09G2330/021 , G09G2340/0435 , G09G2360/16
Abstract: Systems and methods for operating a display by dynamically determining a refresh rate for the display. In certain implementations, a processor determines a number of pixels having medium grayscale levels from a histogram for the image. If the number does not exceed a threshold, the processor sets a refresh rate for the display to a first refresh rate. In certain implementations, if the number exceeds a threshold, the processor may set the refresh rate for the display to a second refresh rate. Moreover, the first refresh rate may be lower than the second threshold. In some implementations, the image may be analyzed by subdividing the image into blocks and determining a refresh rate based on grayscale levels or distributions in the blocks. Based on the analysis of the blocks, a corresponding refresh rate may be selected.
Abstract translation: 通过动态地确定显示器的刷新率来操作显示器的系统和方法。 在某些实现中，处理器根据图像的直方图确定具有中等灰度等级的像素数。 如果号码不超过阈值，则处理器将显示器的刷新率设置为第一刷新率。 在某些实现中，如果数量超过阈值，则处理器可以将显示器的刷新率设置为第二刷新率。 此外，第一刷新率可以低于第二阈值。 在一些实现中，可以通过将图像细分为块并且基于块中的灰度等级或分布来确定刷新率来分析图像。 基于块的分析，可以选择相应的刷新率。
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公开(公告)号：US12136394B2
公开(公告)日：2024-11-05
申请号：US16802354
申请日：2020-02-26
Applicant: Apple Inc.
Inventor： Hyunwoo Nho , Myungjoon Choi , Hyunsoo Kim , Mohammad Ali Jangda , Jie Won Ryu , Shiping Shen , Kingsuk Brahma , Chaohao Wang , Wei H. Yao , Alex H. Pai
IPC: G09G3/3258 , G09G3/3233
Abstract: An electronic device includes a display having multiple regions of pixels. Each pixel includes a diode that emits light based on an amount of current through the diode and a transistor that controls the amount of current flowing through the diode. The electronic device includes driver-integrated circuitry that reduces hysteresis in a first transistor of a first pixel of a region of pixels, settles a threshold voltage of the first transistor, applies a test voltage to the first transistor, and senses a current across the first transistor. The electronic device includes processing circuitry that determines a predetermined voltage based on the current and a predetermined current-voltage relationship determined at an initial temperature, determines a voltage difference between the test voltage and the predetermined voltage, and applies the predetermined voltage and the voltage difference to a second transistor of a second pixel of the region of pixels.
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Patent Agency Ranking
公开(公告)号：US12131719B2
公开(公告)日：2024-10-29
申请号：US17887222
申请日：2022-08-12
Applicant: Apple Inc.
Inventor： Wanqing Xin , Mehmet N Agaoglu , Gokhan Avkarogullari , Jenny Hu , Alexander K Kan , Yuhui Li , James R Montgomerie , Andrey Pokrovskiy , Yingying Tang , Chaohao Wang
IPC: G09G5/36
CPC classification number: G09G5/363 , G09G2340/0435 , G09G2370/04 , G09G2370/22
Abstract: An electronic device may include a display. Control circuitry may operate the display at different frame rates such as 60 Hz, 80 Hz, and 120 Hz. The control circuitry may determine which frame rate to use based on a speed of animation on the display and based on a type of animation on the display. To mitigate the appearance of judder as the display frame rate changes, the control circuitry may implement techniques such as hysteresis (e.g., windows of tolerance around speed thresholds to ensure that the display frame rate does not change too frequently as a result of noise), speed thresholds that are based on a user perception study, consistent latency between touch input detection and corresponding display output across different frame rates (e.g., using a fixed touch scan rate that is independent of frame duration), and animation-specific speed thresholds for triggering frame rate changes.
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公开(公告)号：US11978385B2
公开(公告)日：2024-05-07
申请号：US17889242
申请日：2022-08-16
Applicant: Apple Inc.
Inventor： Yao Shi , Wei H Yao , Hyunwoo Nho , Jie Won Ryu , Kingsuk Brahma , Li-Xuan Chuo , Hyunsoo Kim , Myungjoon Choi , Ce Zhang , Alex H Pai , Shengkui Gao , Rungrot Kitsomboonloha , Shatam Agarwal , Vehbi Calayir , Chaohao Wang , Steven N Hanna , Pei-En Chang
IPC: G09G3/20
CPC classification number: G09G3/2096 , G09G3/2007 , G09G2310/0291 , G09G2320/0223 , G09G2320/0233 , G09G2330/021 , G09G2360/16
Abstract: This disclosure provides various techniques for providing fine-grain digital and analog pixel compensation to account for voltage error across an electronic display. By employing a two-dimensional digital compensation and a local analog compensation, a fine-grain and robust pixel compensation scheme may be provided to the electronic display.
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公开(公告)号：US11955038B1
公开(公告)日：2024-04-09
申请号：US17346063
申请日：2021-06-11
Applicant: Apple Inc.
Inventor： Sheng Zhang , Chaohao Wang , Yi-Pai Huang , Yue Ma , Ping-Yen Chou , Fu-Chung Huang
CPC classification number: G09G3/001 , G02B30/29 , G09G2320/0693
Abstract: An electronic device may include a lenticular display. The lenticular display may have a lenticular lens film formed over an array of pixels. The display may have a number of independently controllable viewing zones. Each viewing zone displays a respective two-dimensional image. Each eye of the viewer may receive a different one of the two-dimensional images, resulting in a perceived three-dimensional image. The electronic device may include display pipeline circuitry that generates and processes content to be displayed on the lenticular display. Content generating circuitry may generate content that includes a plurality of two-dimensional images, each two-dimensional image corresponding to a respective viewing zone. Pixel mapping circuitry may be used to map the two-dimensional images to the array of pixels in the lenticular display. The array of pixels may have a diagonal layout. An offset map may be used by the pixel mapping circuitry to account for the diagonal layout.
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公开(公告)号：US11908846B1
公开(公告)日：2024-02-20
申请号：US17009158
申请日：2020-09-01
Applicant: Apple Inc.
Inventor： Yung-Yu Hsu , Chaohao Wang , Jonathan C. Moisant-Thompson , Kuan H. Lu , Mingjing Ha , Paul S. Drzaic , Yang Li , Yi-Pai Huang , Nathaniel T. Lawrence
IPC: H01L25/16
CPC classification number: H01L25/167
Abstract: A display may include light-emitting components such as light-emitting diodes on a transparent substrate. Conductive signal paths between the light-emitting components, driver integrated circuits for controlling the light-emitting components, and the light-emitting components themselves may be opaque. To mitigate diffraction artifacts caused by the opaque components, the opaque footprint of the display may be selected to include non-periodic portions. The non-periodic portions increase randomness and reduce periodicity within the opaque footprint, which mitigates perceptible diffraction artifacts when viewing the display. One or both of the component mounting portions and interconnect portions of the opaque footprint may be non-periodic. The component mounting portions may have random shapes. The interconnect portions may follow random paths between the component mounting portions.
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公开(公告)号：US20240038158A1
公开(公告)日：2024-02-01
申请号：US18481119
申请日：2023-10-04
Applicant: Apple Inc.
Inventor： Lingtao Wang , Yingying Tang , Scott R. Johnston , Chaohao Wang , Sheng Zhang , Woo Shik Jung
IPC: G09G3/3225
CPC classification number: G09G3/3225 , G09G2320/0233 , G09G2300/0443 , G09G2360/144 , G09G2320/0673
Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.
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