TW202032531A - Anti-flicker driving method for visible images under strong light, display device and information processing device capable of preventing flickers on images by adjusting a final brightness adjustment curve - Google Patents

Abstract

An anti-flicker driving method for visible images under strong light includes: determining a code according to an ambient light intensity value and storing the code in a memory unit, wherein the code is provided for selecting one of N different brightness adjustment curves, where N is a positive integer, and the memory unit stores the N different brightness adjustment curves and a plurality of codes that include a current code and a plurality of previous codes; performing an anti-flicker brightness adjustment procedure to determine whether to update a final brightness adjustment curve, which includes: determining whether the current code conforms to a predicted value of a fixed trend formed by the plurality of previous codes and, if yes, selecting a corresponding brightness adjustment curve according to the current code to update the final brightness adjustment curve, otherwise not updating the final brightness adjustment curve; and performing a pixel conversion procedure on the brightness value of each input pixel according to the final brightness adjustment curve so as to generate a display pixel brightness value.

Description

Anti-flicker driving method for visible images under strong light, display device and information processing device

The present invention relates to a driving method for a visible image under strong light, in particular to an anti-flicker driving method for a visible image under strong light.

When a general monitor is used in the sun, it is often impossible to read or watch the picture due to strong direct light.

In order to solve this problem, a conventional solar readable (SLR) technical solution has been proposed, which is characterized by: real-time monitoring of the ambient light intensity by a photosensitive element arranged on the screen, and according to the ambient light intensity Adjust the brightness value of each pixel in a non-linear manner to achieve the purpose of being readable or watchable on the screen under strong outdoor light.

Please refer to FIGS. 1a-b together, in which, FIG. 1a shows a schematic diagram of a nonlinear brightness adjustment curve selected by a conventional visible technology solution under strong light in a low light environment; and FIG. 1b shows the conventional A schematic diagram of another non-linear brightness adjustment curve selected by the known technical solution for visibility under strong light in a strong light environment.

However, when the intensity of the ambient light changes repeatedly between strong and weak, the conventional visible technical solution under strong light will change the brightness adjustment curve repeatedly, resulting in flickering of the screen. As a result, it not only makes the screen unfavorable for reading or viewing, but also may cause damage to the user's eyes.

Therefore, there is an urgent need in the art for a novel driving method for visible images under strong light.

One purpose of the present invention is to disclose a flicker-proof driving method for visible images under strong light, which can adaptively update the brightness adjustment curve to provide a visible display image under strong light when the intensity of the ambient light changes in a fixed trend. It can also prevent the screen from flickering by not updating the brightness adjustment curve when the intensity of the ambient light changes repeatedly between strong and weak.

Another object of the present invention is to disclose a display device, which not only can adaptively update the brightness adjustment curve to provide a display screen visible under strong light when the intensity of the ambient light changes in a fixed trend, but also can be used under the intensity of ambient light. When it changes repeatedly between strong and weak, the brightness adjustment curve is not updated to prevent the screen from flickering.

Another object of the present invention is to disclose an information processing device with a display device that can adaptively update the brightness adjustment curve to provide a display screen visible under strong light when the intensity of the ambient light changes in a fixed trend. When the intensity of the ambient light changes repeatedly between strong and weak, the brightness adjustment curve is not updated to prevent the screen from flickering.

In order to achieve the foregoing objective, an anti-flicker driving method for visible images under strong light is proposed, which is implemented by a control circuit and includes the following steps:

Use a photosensitive element to detect an ambient light intensity value;

A processor is used to determine a code of a brightness adjustment curve according to the ambient light intensity value, and store it in a memory unit, where the code is used to select one of N different brightness adjustment curves, and N is positive An integer, and the memory unit stores the N different brightness adjustment curves and a plurality of the codes, and the plurality of the codes include a current code and a plurality of previous codes;

Use the processor to execute an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: determining whether the current code conforms to a predicted value of a fixed trend formed by the plurality of previous codes, and if so, According to the current code, select a corresponding brightness adjustment curve to update the final brightness adjustment curve, if not, do not update the final brightness adjustment curve; and

The processor is used to execute a pixel conversion process on the brightness value of each input pixel according to the final brightness adjustment curve to generate a display pixel brightness value.

In one embodiment, the memory unit includes a register, a cache memory, or a random access memory.

In one embodiment, the fixed trend is that the plurality of previous codes are all the same.

In one embodiment, the fixed trend is that the plurality of previous codes change ascending or descending.

To achieve the foregoing objective, the present invention provides a display device having a display screen and a control circuit for driving the display screen. The control circuit includes a photosensitive element and a processor. The photosensitive element is used to detect a Ambient light intensity value, and the processor is used to implement an anti-flicker driving method for a visible image under strong light. The method includes the following steps:

Determine the code of a brightness adjustment curve according to the ambient light intensity value, and store it in a memory unit, where the code is used to select one of N different brightness adjustment curves, N is a positive integer, and the The memory unit stores the N different brightness adjustment curves and a plurality of the codes, and the plurality of the codes include a current code and a plurality of previous codes;

Perform an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: determining whether the current code matches a predicted value of a fixed trend formed by the plurality of previous codes, and if so, according to the current code Select a corresponding brightness adjustment curve to update the final brightness adjustment curve, if not, do not update the final brightness adjustment curve; and

According to the final brightness adjustment curve, a pixel conversion process is performed on the brightness value of each input pixel to generate a display pixel brightness value.

In one embodiment, the memory unit includes a register, a cache memory, or a random access memory.

In one embodiment, the fixed trend is that the plurality of previous codes are all the same.

In one embodiment, the fixed trend is that the plurality of previous codes change ascending or descending.

In addition, the present invention further provides an information processing device, which has the aforementioned display device.

In possible embodiments, the information processing device can be a smart phone or a portable computer device.

In order to enable your reviewer to further understand the structure, features and purpose of the present invention, drawings and detailed descriptions of preferred specific embodiments are attached as follows.

Please refer to FIG. 2, which shows a flow chart of an embodiment of an anti-flicker driving method for a visible image under strong light of the present invention, which is implemented by a control circuit. As shown in FIG. 2, the method includes the following steps: using a photosensitive element to detect an ambient light intensity value (step a); using a processor to determine a brightness adjustment curve code according to the ambient light intensity value, and storing it In a memory unit, the code is used to select one of N different brightness adjustment curves, where N is a positive integer, and the memory unit stores the N different brightness adjustment curves and a plurality of the Code, and the plurality of codes include a current code and a plurality of previous codes (step b); using the processor to execute an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: judging the Whether the current code meets a predicted value of a fixed trend formed by the plurality of previous codes, if so, select a corresponding brightness adjustment curve according to the current code to update the final brightness adjustment curve, if not, then Do not update the final brightness adjustment curve (step c); and use the processor to execute a pixel conversion process on the brightness value of each input pixel according to the final brightness adjustment curve to generate a display pixel brightness value (step d).

In step b, the memory unit may include a register, a cache memory or a random access memory.

In step c, the fixed trend may be that the plurality of previous codes are all the same, or the plurality of previous codes change in increasing or decreasing order.

That is to say, during operation, if the ambient light intensity changes repeatedly between strong and weak, the plurality of previous codes will not be the same, nor will it show a fixed trend of increasing or decreasing changes. At this time, The present invention does not update the final brightness adjustment curve to prevent the screen from flickering.

Based on the above description, the present invention further provides a display device. Please refer to FIG. 3, which shows a block diagram of an embodiment of the display device of the present invention. 3, a display device 100 having a display screen 110, a photosensitive member 120, a processor 130 and a memory unit 140, wherein the photosensitive member 120 a system for detecting ambient light intensity value L _A, and The processor 130 is used to execute an anti-flicker driving method for visible images under strong light to convert each input pixel brightness value P _IN into a display pixel brightness value P _OUT to drive the display screen 110. The method includes the following steps:

The intensity value according to the ambient light L _A luminance adjustment curve determines a code, and stored in the memory unit 140, the code system is used in a selective N different luminance adjustment curve, N is a positive integer, the memory unit 140 stores the N different brightness adjustment curves and a plurality of the codes, and the plurality of the codes include a current code and a plurality of previous codes;

Perform an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: determining whether the current code matches a predicted value of a fixed trend formed by the plurality of previous codes, and if so, according to the current code Select a corresponding brightness adjustment curve to update the final brightness adjustment curve, if not, do not update the final brightness adjustment curve; and

According to the final brightness adjustment curve, a pixel conversion process is performed on each input pixel brightness value P _IN to generate a display pixel brightness value P _OUT .

In addition, the memory unit 140 may include a register, a cache memory, or a random access memory.

In addition, the fixed trend may be that the plurality of previous codes are all the same, or the plurality of previous codes change in increasing or decreasing order. Accordingly, the display device shown in FIG. 3 can not update the final brightness adjustment curve when the ambient light intensity changes repeatedly between strong and weak, thereby preventing the screen from flickering.

In addition, according to the above description, the present invention further discloses an information processing device. Please refer to FIG. 4, which shows a block diagram of an embodiment of the information processing device of the present invention. As shown in FIG. 4, an information processing device 200, which can be a smart phone or a portable computer device, has a central processing unit 210 and a display device 220.

The display device 220 having a display screen 221, a photosensitive member 222, a processor 223 and a memory unit 224, wherein the photosensitive member 222 a system for detecting ambient light intensity value L _A, and the processor 223 to perform line The anti-flicker driving method for visible images under strong light shown in FIG. 2 converts each input pixel brightness value P _IN into a display pixel brightness value P _OUT to drive the display screen 221, and the central processing unit 210 is used to provide input pixels The brightness value P _{IN reaches the} display device 220. In addition, the memory unit 224 may include a register, a cache memory, or a random access memory.

With the design disclosed above, the present invention has the following advantages:

1. The picture display technology of the present invention can not only adaptively update the brightness adjustment curve to provide a visible display picture under strong light when the intensity of the ambient light changes in a fixed trend, but also when the intensity of the ambient light is between strong and weak When changing repeatedly, the brightness adjustment curve is not updated to prevent the screen from flickering, thereby providing eye protection.

2. The picture display technology of the present invention can adaptively update the brightness adjustment curve to provide a visible display picture under strong light without increasing the hardware cost too much when the intensity of the ambient light changes in a fixed trend. And when the intensity of the ambient light changes repeatedly between strong and weak, the brightness adjustment curve is not updated to prevent the screen from flickering, thereby providing the effect of eye protection.

The disclosure in this case is a preferred embodiment, and any partial changes or modifications that are derived from the technical ideas of the case and can be easily inferred by those who are familiar with the art do not deviate from the scope of the patent right of the case.

To sum up, regardless of the purpose, means and effects of this case, it is shown that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. Please check it out and grant the patent as soon as possible Society is for the best prayer.

100: display device 110: Display 120: photosensitive element 130: processor 140: memory unit 200: Information processing device 210: Central Processing Unit 220: display device 221: Display 222: photosensitive element 223: processor 224: Memory Unit Step a--Using a photosensitive element to detect an ambient light intensity value Step b--Using a processor to determine a code for a brightness adjustment curve according to the ambient light intensity value, and storing it in a memory unit , Wherein the code is used to select one of N different brightness adjustment curves, N is a positive integer, and the memory unit stores the N different brightness adjustment curves and a plurality of the codes, and the The plurality of said codes include a current code and a plurality of previous codes. Step c-use the processor to execute an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: determining whether the current code conforms to the A prediction value of a fixed trend formed by a plurality of previous codes. If so, a corresponding brightness adjustment curve is selected according to the current code to update the final brightness adjustment curve. If not, the final brightness adjustment is not updated Curve step d--Using the processor to perform a pixel conversion process on the brightness value of each input pixel according to the final brightness adjustment curve to generate a display pixel brightness value

FIG. 1a shows a schematic diagram of a non-linear brightness adjustment curve selected by a conventional visible under strong light technology in a low light environment. Fig. 1b shows a schematic diagram of another nonlinear brightness adjustment curve selected under a strong light environment in the conventional visible under strong light technical solution. FIG. 2 shows a flow chart of an embodiment of an anti-flicker driving method for a visible image under strong light of the present invention. FIG. 3 shows a block diagram of an embodiment of the display device of the present invention. FIG. 4 shows a block diagram of an embodiment of the information processing device of the present invention.

Step a: Use a photosensitive element to detect an ambient light intensity value

Step b: Utilize a processor to determine a code of a brightness adjustment curve according to the ambient light intensity value, and store it in a memory unit, where the code is used to select one of N different brightness adjustment curves, N is a positive integer, and the memory unit stores the N different brightness adjustment curves and a plurality of the codes, and the plurality of the codes include a current code and a plurality of previous codes

Step c: Use the processor to execute an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: determining whether the current code conforms to a predicted value of a fixed trend formed by the plurality of previous codes, If yes, select a corresponding brightness adjustment curve according to the current code to update the final brightness adjustment curve, if not, do not update the final brightness adjustment curve

Step d: Use the processor to perform a pixel conversion process on the brightness value of each input pixel according to the final brightness adjustment curve to generate a display pixel brightness value

Claims (10)

An anti-flicker driving method for visible images under strong light is implemented by a control circuit, which includes the following steps: using a photosensitive element to detect an ambient light intensity value; using a processor to determine a brightness adjustment according to the ambient light intensity value The code of the curve is stored in a memory unit, where the code is used to select one of N different brightness adjustment curves, where N is a positive integer, and the memory unit stores the N different Brightness adjustment curve and a plurality of the codes, and the plurality of the codes include a current code and a plurality of previous codes; using the processor to execute an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which Including: judging whether the current code conforms to a predicted value of a fixed trend formed by the plurality of previous codes; if so, selecting a corresponding brightness adjustment curve according to the current code to update the final brightness adjustment curve; If not, the final brightness adjustment curve is not updated; and the processor is used to execute a pixel conversion process on the brightness value of each input pixel according to the final brightness adjustment curve to generate a display pixel brightness value. The anti-flicker driving method for visible images under strong light as described in the first item of the patent application, wherein the memory unit includes a register, a cache memory or a random access memory. For the anti-flicker driving method for visible images under strong light as described in item 1 of the scope of patent application, the fixed trend is that the plurality of previous codes are the same. The anti-flicker driving method for a visible image under strong light as described in item 1 of the scope of the patent application, wherein the fixed trend is that the plurality of previous codes change gradually or gradually. A display device has a display screen and a control circuit for driving the display screen. The control circuit includes a photosensitive element and a processor. The photosensitive element is used to detect an ambient light intensity value, and the processing The device is used to implement an anti-flicker driving method for visible images under strong light. The method includes the following steps: Determine a brightness adjustment curve code according to the ambient light intensity value, and store it in a memory unit, wherein the The code is used to select one of N different brightness adjustment curves, N is a positive integer, and the memory unit stores the N different brightness adjustment curves and a plurality of the codes, and the plurality of the The code includes a current code and a plurality of previous codes; executing an anti-flicker brightness adjustment program to determine whether to update a final brightness adjustment curve, which includes: judging whether the current code conforms to a fixed trend formed by the plurality of previous codes A predicted value, if yes, select a corresponding brightness adjustment curve according to the current code to update the final brightness adjustment curve, if not, do not update the final brightness adjustment curve; and according to the final brightness adjustment curve The input pixel brightness value performs a pixel conversion process to generate a display pixel brightness value. As for the display device described in item 5 of the scope of patent application, the memory unit includes a register, a cache memory or a random access memory. In the display device described in item 5 of the scope of patent application, the fixed trend is that the plural previous codes are all the same. As for the display device described in item 5 of the scope of the patent application, the fixed trend is that the plurality of previous codes change ascending or descending. An information processing device, which has a display device as described in any one of items 5-8 in the scope of patent application. For example, the information processing device described in item 9 of the scope of patent application is a smart phone or a portable computer device.

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