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Method and device for dynamic bandwidth adaptation of display layers

A dynamic bandwidth and bandwidth technology, applied in the direction of digital output to display device, static indicator, data processing input/output process, etc., can solve the problem that the memory frequency cannot meet the display requirements of one frame of image data, and reduce power consumption. Effect

Active Publication Date: 2021-04-09
FUZHOU ROCKCHIP SEMICON
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Problems solved by technology

[0005] To this end, it is necessary to provide a technical solution for dynamic bandwidth adaptation of the display layer to solve the problem that the adjusted memory frequency cannot meet the display requirements of the next frame of image data during the blanking period

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  • Method and device for dynamic bandwidth adaptation of display layers

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Embodiment Construction

[0033] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0034] see figure 1 , is a flowchart of a method for dynamic bandwidth adaptation of a display layer according to an embodiment of the present invention. The method comprises the steps of:

[0035] First enter step S101 to count the layer information of the next frame of image data, and determine the corresponding maximum line data amount according to the layer information.

[0036] Then enter step S102 to calculate the maximum row bandwidth of the next frame of image data according to the maximum row data amount and the row refresh time, and determine the memory frequency corresponding to the maximum row bandwidth according to the correspondence between the data bandwidth and the memory frequency;

[0037] Then enter step S103 to d...

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Abstract

The present invention provides a method and device for dynamic bandwidth adaptation of a display layer. The method includes the following steps: counting the layer information of the next frame of image data, and determining the corresponding maximum row data according to the layer information amount; according to the maximum row data volume and row refresh time, calculate the maximum row bandwidth of the next frame of image data, and determine the memory frequency corresponding to the maximum row bandwidth according to the correspondence between the data bandwidth and the memory frequency; determine the current memory Whether the frequency is lower than the memory frequency corresponding to the maximum row bandwidth, if so, perform step S1: adjust the current memory frequency to the memory frequency corresponding to the maximum row bandwidth. Through the above solution, the bandwidth prediction required for displaying layers and the self-adaptation of memory frequency conversion can be realized, thereby reducing power consumption.

Description

technical field [0001] The invention relates to the field of memory frequency conversion, in particular to a method and device for dynamic bandwidth adaptation of a display layer. Background technique [0002] When the memory is running, the frequency has a great impact on the power consumption. In order to optimize the system power consumption, the memory frequency is often set according to the actual bandwidth requirements, that is, the memory frequency is converted. However, because the display principle of the LCD monitor needs to refresh the memory regularly, and because the resolution of the current LCD is relatively large, the bandwidth requirement of the memory is relatively high. Therefore, if the data is terminated due to the frequency conversion of the memory during the refresh process, the LCD will A display exception will occur. [0003] During memory frequency conversion, each controller is not allowed to access memory ports for data access. When memory data n...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G06F3/14
CPCG06F3/1407G09G3/36G09G2330/021
Inventor 肖锋谢修鑫
Owner FUZHOU ROCKCHIP SEMICON