Display controller capable of reducing using high speed buffer store and its frame regulating method

Abstract

A display controller capable of reducing cache usage and a frame adjustment method thereof. The display controller includes a memory controller, a first memory, a second memory and a frame management circuit. The memory controller reads the image data of the source frame to obtain the first image data, and reads the image data of the destination frame to obtain the second image data. The first memory is used for storing the first image data. The second memory is used for storing the second image data. The frame management circuit is used for processing the first image data to generate a processed first image data, so that the processed first image data is superimposed on the second image data in the second memory to obtain the processed second image data . If the processed second image data needs to be reprocessed, the display controller writes the processed second image data back to the external memory.

Description

technical field [0001] The invention relates to a display controller and a frame adjustment method thereof, in particular to a display controller capable of reducing cache usage and an adjustment method thereof. Background technique [0002] With the advancement of technology, various electronic products have gradually become the focus of human life, and the display effect of electronic products has become a major factor that attracts consumers to buy. The display screen of an electronic product is obtained by processing and superimposing multiple frames to obtain the final display screen. Its operation is such as superimposing the processed sub-frames on the main frame to obtain a display image. [0003] The above applications are used, for example, in function menus displayed by electronic devices. Various functions that can be used by electronic devices have increased significantly. In order to facilitate the selection of various function options in the electronic devi...

AI Technical Summary

Problems solved by technology

[0007] However, since the framebuffer needs to store the entire display frame, a cache capable of storing the entire display frame requires considerable memory capacity

This has a relatively large cache memory, although it can reduce the access time of the display controller, but it also increases the production cost of the traditional display controller, which reduces the competitiveness in the market

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