公开(公告)号：US10789877B2

公开(公告)日：2020-09-29

申请号：US16515952

申请日：2019-07-18

Applicant: APPLE INC.

Inventor： Peter F. Holland ,  Mahesh B. Chappalli ,  Hari Ganesh R. Thirunageswaram

IPC: G09G3/20 ,  G09G5/00 ,  G06T1/20 ,  G06F3/14

Abstract: Devices and methods for underrun compensation are provided. By way of example, a technique for underrun compensation includes determining a particular one of a plurality of pixel configurations for a display. When an underrun condition is detected during processing of first image data via an image processing pipeline, at least a portion of requested image data for downstream processing has not yet been provided by an upstream processing component. Accordingly, upon detecting an underrun condition, underrun pixel data for the at least portion of the requested image data is generated, based upon the particular one of the plurality of pixel configurations.

公开(公告)号：US20190027087A1

公开(公告)日：2019-01-24

申请号：US15654501

申请日：2017-07-19

Applicant: APPLE INC.

Inventor： Peter F. Holland ,  Mahesh B. Chappalli ,  Hari Ganesh R. Thirunageswaram

IPC: G09G3/20 ,  G09G5/00 ,  G06T1/20 ,  G06F3/14

CPC classification number: G09G3/2096 ,  G06F3/14 ,  G06T1/20 ,  G09G3/2092 ,  G09G5/003 ,  G09G5/005 ,  G09G2340/0435 ,  G09G2350/00 ,  G09G2370/08

Abstract: Devices and methods for underrun compensation are provided. By way of example, a technique for underrun compensation includes determining a particular one of a plurality of pixel configurations for a display. When an underrun condition is detected during processing of first image data via an image processing pipeline, at least a portion of requested image data for downstream processing has not yet been provided by an upstream processing component. Accordingly, upon detecting an underrun condition, underrun pixel data for the at least portion of the requested image data is generated, based upon the particular one of the plurality of pixel configurations.

公开(公告)号：US20160292814A1

公开(公告)日：2016-10-06

申请号：US14676565

申请日：2015-04-01

Applicant: Apple Inc.

Inventor： Peter F. Holland ,  Hari Ganesh R. Thirunageswaram ,  Eric Young

IPC: G06T1/60

CPC classification number: G09G5/00 ,  G09G5/393 ,  G09G5/395 ,  G09G2330/022 ,  G09G2340/02 ,  G09G2340/10 ,  G09G2350/00 ,  H04N19/136 ,  H04N19/172 ,  H04N21/44008

Abstract: A display pipe is configured to generate output frames for display. Additionally, the display pipe may be configured to compress an output frame and write the compressed frame back to memory responsive to detecting static content in successive output frames. The display pipe may also be configured to determine to selectively allow write-back logic to operate when doing so will not cause a pixel underrun to the display. If an underrun might occur, write-back logic is temporarily disabled. If write-back is successful, the display pipe may read the compressed frame from memory for display instead of reading the source frames for compositing and display.

Abstract translation: 显示管被配置为生成用于显示的输出帧。 此外，显示管可以被配置为压缩输出帧并且响应于检测连续输出帧中的静态内容而将压缩帧写回存储器。 显示管还可以被配置为确定选择性地允许回写逻辑操作，这样做将不会导致像素超出显示。 如果发生欠载，则暂时禁用回写逻辑。 如果回写成功，显示管道可以从存储器读取压缩帧以进行显示，而不是读取用于合成和显示的源帧。