Regulating circuit and regulating method capable of reducing power consumption of screen

Abstract

The invention provides a regulating circuit and a regulating method capable of reducing power consumption of a screen. The regulating method comprises the steps of reading pixel values of current frame and previous frame from a frame storage unit by a difference calculation unit, calculating frame difference information, and sending to a frame difference storage unit; storing M pieces of frame difference information and sending the stored frame difference information of the current frame and the previous (N-1)th frame to a display scene judgment unit by the frame difference storage unit, and judging current display scene according to the frame difference information of the current frame and the previous (N-1)th frame and the configuration information and sending a judgment result to a display frame rate control unit and a display control unit frequency controller by the display scene judgment unit; and regulating the display frame rate by the display frame rate control unit according to the configuration information and the judgment result to change the refreshing rate, and regulating the working frequency of the display control unit by the display control unit frequency controller. According to the invention, the refreshing rate of the display screen and the working frequency of a display control circuit can be dynamically regulated according to different display scenes.

Description

【Technical field】 [0001] The invention relates to an adjustment circuit capable of reducing screen power consumption and an adjustment method thereof. 【Background technique】 [0002] The current standby time of handheld devices has become a bottleneck of handheld devices, and in the composition of power consumption of handheld devices, the power consumption of the screen accounts for a considerable part. How to reduce the power consumption of the screen part is a very meaningful topic. . During the use of mobile handheld devices, document reading or the screen is turned on but the user does not operate the time accounts for a large proportion of the total time, especially for some users who like to read or do business, the screen content is still for a long time. If the power consumption of the screen and the power consumption of the control circuit can be greatly reduced during the use time when this part of the screen is turned on but the display content is static or basi...

AI Technical Summary

Problems solved by technology

During the use of mobile handheld devices, document reading or the screen is turned on but the user does not operate the time accounts for a large proportion of the total time, especially for some users who like to read or do business, the screen content is still for a long time

If this part of the screen can be turned on but the display content is still or basically unchanged, the power consumption of the screen and the power consumption of the control circuit will be greatly reduced during the use time, which will greatly increase the use time of the mobile handheld device.

[0003] The current liquid crystal display controller has the following disadvantages: the refresh rate of the display screen at any time is consistent with the internal operating frequency of the display control circuit, and will not be adaptively changed according to different display scenes to achieve the purpose of saving power consumption

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