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Display controller and method of operation thereof, data processing system, storage medium

A technology of data processing system and display controller, applied in the direction of electrical digital data processing, input/output process of data processing, static indicator, etc.

Inactive Publication Date: 2021-09-24
ARM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In data processing systems in low-power and portable devices, the bandwidth cost of the conversion operations for writing data to external memory and / or for reading data from external memory is a significant problem

Method used

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  • Display controller and method of operation thereof, data processing system, storage medium
  • Display controller and method of operation thereof, data processing system, storage medium
  • Display controller and method of operation thereof, data processing system, storage medium

Examples

Experimental program
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Embodiment Construction

[0319] Below, refer to image 3 , to describe preferred embodiments of the present invention.

[0320] image 3 A display controller 12 according to an embodiment of the present invention is schematically shown. exist image 3 In , the boxes represent the functional units of the display controller, while the arrowed lines represent the connections between the different units.

[0321] In this embodiment, the display controller 12 includes a main display core 20 and a secondary display core 40, that is, the display controller is a dual-core display controller. The main display core 20 and the sub display core 40 are configured as the same chip (monolithic integrated circuit), that is, integrated and substantially identical. Such as image 3 As shown, primary display core 20 controls local display 6 of the overall data processing system (e.g., mobile phone, smartphone, tablet, etc.), while secondary display core 40 controls external display 8, e.g., via HDMI, MHL, DisplayPo...

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PUM

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Abstract

A controller and method of operation thereof, a data processing system, and a storage medium are shown. The display controller includes a first display processing core including a first input stage operable to read at least one input plane, operable to process the one or more input planes to generate an output plane a first processing stage, and a first output stage operable to provide an output surface for display to a first display; and a second display processing core comprising a display operable to read at least one input surface A second input stage, a second processing stage operable to process the one or more input surfaces to generate an output surface, and a second output stage operable to provide the output surface to a second display for display. The display controller also includes an internal data path for passing pixel data of the output surface from the second display core to the first display core.

Description

technical field [0001] This invention relates to display controllers for use in data processing systems. Background technique [0002] In a data processing system, images to be displayed to a user are processed by the data processing system for display. This image for display is typically processed through multiple processing stages before it is displayed to the user. For example, the image will be processed by the monitor's so-called "display controller" for display. [0003] Typically, the display controller will read the output image to be displayed from a so-called "frame buffer" in memory, which stores the image as an array of data (e.g., via an internal Direct Memory Access (DMA: Direct Memory Access) ), and provide the image data appropriately to a display (eg, via a pixel pipeline) (the display may be a screen or a printer, for example). When the output image is ready for display and the display controller then reads the frame buffer and provides the output image ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14
CPCG06F3/1438G06F3/1423G06F3/1454G09G5/14G09G2340/04G09G2340/12G09G2350/00G09G2360/02G09G2360/04G09G2360/08G09G2360/06G09G5/363G06T1/20G09G3/20G09G5/00G06T1/60G09G5/393G09G5/395G09G2360/18G06F3/1431G09G5/377
Inventor D·P·摩多尔兹克P·T·赫罗博克D·克罗克斯福德
Owner ARM LTD