TW202040558A - Activation method for automatic current limiting mechanism of display, display and information processing device using the same being realized by using a control circuit of an actuator - Google Patents

Abstract

An activation method for automatic current limiting mechanism of display is disclosed, which is realized by using a control circuit of an actuator, wherein the actuator is used for driving a display panel, while the control circuit is used for generating an enabling signal to enable or disable an automatic current limiting circuit in order to adjust the degree of brightness of a displayed screen. The disclosed method includes the following steps: calculating an weighted average value of RGB on every pixel for the number of N pixels in a frame picture; calculating a total average value on the number of N weighted average values of RGBs, wherein N is an integer greater than 1; multiplying the total average value by a brightness value of a display to produce a product, wherein the brightness value of the display is provided by an application processor; and determining whether the product is greater than a threshold or not, if yes, activating the enabling signal, if not, deactivating the enabling signal. Moreover, the present invention also discloses a display and an information processing device using the activation method for automatic current limiting mechanism of display.

Description

Automatic current limiting mechanism activation method of display and display and information processing device adopting the method

The present invention relates to a display, in particular to a method for starting an automatic current limiting mechanism of the display.

With the popularity and vigorous development of mobile devices, displays have become one of the indispensable components.

Among them, organic light-emitting diodes (Organic Light-Emitting Diode, OLED) displays can emit light by themselves and do not need a backlight module. The black performance is purer, the color saturation is higher, and the contrast is sharper. Compared with liquid crystal displays (Liquid-Crystal Display, LCD) The overall color performance is more vivid. Moreover, the organic light-emitting diode display has a higher viewing angle, lower power consumption, can be made thinner and can be folded and bent, which is conducive to saving space and becoming the most promising candidate for the next generation of displays.

However, because it emits light on its own , it has the same degradation problem as a light bulb, and the aging rate of blue in the three colors of RGB is very fast, which affects the service life of the product. In order to prolong the life of the organic light emitting diode display, users must watch less websites with white as the background or less blue pictures of the ocean and sunny days, which affects the user experience.

Therefore, there is an urgent need in the art for a novel automatic current limitation (ACL) mechanism activation method of the display.

One purpose of the present invention is to disclose a display automatic current limiting mechanism activation method, which uses the control circuit of the driver to generate a consistent energy signal to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen, thereby extending the display Service life.

Another object of the present invention is to disclose a display automatic current limiting mechanism activation method, which uses the control circuit of the driver to generate a consistent energy signal to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen, thereby reducing the display Power consumption.

Another object of the present invention is to disclose an automatic current limiting mechanism activation method for displays, which can disable an automatic current limiting circuit even if the average pixel value is a high value under the requirement of low display brightness value Make the display screen not too dim.

To achieve the foregoing objective, an automatic current limiting mechanism activation method for a display is proposed, which is implemented by a control circuit of a driver, the driver is used to drive a display panel, and the control circuit is used to generate a consistent energy signal In order to enable or disable an automatic current-limiting circuit to adjust the brightness of a display screen, the method includes the following steps: calculating one of the RGB weighted averages of each of the N pixels in the frame of the picture, and calculating N said A total average value of one of the RGB weighted averages, where N is an integer greater than 1; the total average value and a display brightness value are multiplied to generate a product, wherein the display brightness value is provided by an application processor; and judgment Whether the product is greater than a threshold value, if it is, the enabling signal is rendered into an active state, if not, the enabling signal is rendered into an inactive state.

In possible embodiments, the display panel may be an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a Mirco-LED display panel, or a Mini-LED display panel.

In addition, the present invention also provides a display that has a display panel and a driver for driving the display panel. The driver has a control circuit to perform an automatic current limiting mechanism activation method, which is used to generate a consistent energy signal In order to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen, the method includes the following steps: performing a pixel averaging operation, which includes calculating one of the RGB weights of each of the N pixels in the frame of the screen Average value, and calculate the total average value of one of the N RGB weighted averages, where N is an integer greater than 1, and perform a multiplication operation, which includes multiplying the total average value and a display brightness value to generate a product, Wherein, the brightness value of the display comes from an application processor; and performing a comparison operation, which includes determining whether the product is greater than a threshold value, if so, the enable signal is rendered into an active state, if not, the enable signal is enabled The signal assumes an inactive state.

In possible embodiments, the display panel may be an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a Mirco-LED display panel, or a Mini-LED display panel.

In one embodiment, the control circuit has: an average pixel value calculation unit for performing the pixel average operation; a multiplication unit for performing the multiplication operation; and a comparison unit for Perform the comparison operation described.

In an embodiment, the control circuit further has a storage unit to store the R, G, and B values of the N pixels, the total average value, the product, and the threshold value.

In one embodiment, the control circuit further has a microprocessor, and the microprocessor executes a program to implement the automatic current limiting mechanism activation method.

In addition, the present invention further provides an information processing device, which has the aforementioned display to provide an automatic brightness adjustment function.

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. 1, which shows a flowchart of an embodiment of the method for starting the automatic current limit mechanism of the display in this case. The method is realized by a control circuit of a driver, and the driver is used to drive a display panel. And the control circuit is used to generate a consistent energy signal to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen.

As shown in Figure 1, the method includes the following steps: calculating one of the RGB weighted averages of each pixel in N pixels of a frame of picture, and calculating the total average of one of the N said RGB weighted averages, where N is An integer greater than 1 (step a); multiply the total average value and a display brightness value to generate a product, where the display brightness value comes from an application processor (step b); and determine whether the product is greater than one The threshold, if yes, makes the enabling signal present an active state, if not, makes the enable signal present an inactive state (step c).

Wherein, the display panel (not shown in the figure) can be an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a Mirco-LED display panel or a Mini-LED display panel. Since the panels are all conventional technologies, they will not be repeated here.

In addition, according to the above description, the present invention further discloses a display.

Please refer to FIG. 2, which shows a block diagram of an embodiment of the display of the present invention.

As shown in FIG. 2, a display 100 includes a display panel 110, an automatic current limiting circuit 111, a driver 120 and an application processor 130.

The display panel 110 may be an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a Mirco-LED display panel, or a Mini-LED display panel.

The automatic current limiting circuit 111 is used to turn on or off according to the control of the energy signal EN, so as to reduce or not reduce the brightness of a display screen.

The driver 120 is used to drive the display panel 110 and has a control circuit. The control circuit includes a microprocessor 121, a storage unit 122, an average pixel calculation unit 123, a multiplication unit 124, and a comparison unit 125.

The microprocessor 121 implements an automatic current limiting mechanism activation method by executing a program. The method includes: executing a pixel averaging operation, which includes calculating one of the RGB weights of each of the N pixels in the frame of the picture Average value, and calculate the total average value (Y _AVG ) of one of the N weighted RGB averages, where N is an integer greater than 1, and the weighted RGB average is equal to C1*R+C2*G+C3*B , R, G, and B are respectively a red sub-pixel value, a green sub-pixel value and a blue sub-pixel value, C1, C2, and C3 are all real numbers between 0 and 1, and C1+C2+ C3=1; Perform a multiplication operation, which includes multiplying the total average value (Y _AVG ) and a display brightness value (DBV) to generate a product (Y _AVG1 ), where the display brightness value (DBV) is derived from Application processor 130; and performing a comparison operation, which includes determining whether the product (Y _AVG1 ) is greater than a threshold, and if so, making the enable signal EN present an _active state, if not, making the enable signal EN present One inactive state.

The storage unit 122 is used to store the R, G, and B values of N pixels, the average value, the product, and the threshold value.

The average pixel calculation unit 123 is used to perform the aforementioned pixel average calculation.

The multiplication unit 124 is used to perform the multiplication operation described above.

The comparison unit 125 is used to perform the aforementioned comparison operation.

The application processor 130 is coupled to the microprocessor 121 to communicate with the microprocessor 121 and provide the display brightness value (DBV).

Please refer to FIG. 3, which illustrates a schematic diagram of an ACL critical curve generated on the DBV-Y _AVG coordinate plane according to the embodiment of FIG. 2. As shown in Figure 3, the ACL critical curve is a hyperbola, which divides the DBV-Y _AVG coordinate plane into a zone A below the curve and a zone B above the curve. When (Y _AVG , DBV) falls in zone A When (Y _AVG , DBV) falls in Zone B, the automatic current limiting circuit 111 will be enabled.

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 includes a central processing unit 210 and a display 220. The central processing unit 210 is used to communicate with the display 220 to provide display screen data, and the display 220 is shown in FIG. The display 100 is implemented to provide an automatic brightness adjustment function.

In possible embodiments, the information processing device 200 may be a smart phone or a portable computer device.

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

1. The automatic current limiting mechanism activation method of the display of the present invention can generate a consistent energy signal by a novel control circuit to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen, thereby prolonging the service life of the display .

2. The automatic current limiting mechanism activation method of the display of the present invention can generate a consistent energy signal by a novel control circuit to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen, thereby reducing the power consumption of the display .

3. The activation method of the automatic current limiting mechanism of the display of the present invention can be used under the requirement of low display brightness value, even if the average pixel value is a high value, an automatic current limiting circuit is still disabled to prevent the display screen from being too dim .

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 familiar with the art will not deviate from the scope of the patent right of this case.

In summary, regardless of the purpose, means and effect of this case, it is shown that it is very different from the conventional technology, and its first creation is suitable for practicality, 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.

Step a: Calculate one of the RGB weighted averages of each pixel in the N pixels of the frame of picture, and calculate the total average of one of the N said RGB weighted averages, where N is an integer greater than 1. Step b: The total average value and a display brightness value are multiplied to generate a product, where the display brightness value comes from an application processor. Step c: Determine whether the product is greater than a threshold, and if so, make the enable signal present an active state If not, the enable signal is rendered in an inactive state 100: display 110: display panel 111: automatic current limiting circuit 120: driver 121: microprocessor 122: storage unit 123: average pixel calculation unit 124: multiplication Unit 125: comparison unit 130: application processor 200: information processing device 210: central processing unit 220: display

FIG. 1 shows a flowchart of an embodiment of the method for starting the automatic current limit mechanism of the display in this case. FIG. 2 is a block diagram of an embodiment of the display of the present invention. FIG. 3 shows a schematic diagram of an ACL critical curve generated on the DBV-Y _AVG coordinate plane according to the embodiment of FIG. 2. FIG. 4 shows a block diagram of an embodiment of the information processing device of the present invention.

Step a: Calculate one of the RGB weighted averages of each of the N pixels of a frame of picture, and calculate the total average of one of the N RGB weighted averages, where N is an integer greater than 1.

Step b: Multiply the total average value and a display brightness value to generate a product, where the display brightness value comes from an application processor

Step c: Determine whether the product is greater than a threshold, if yes, make the enable signal present an active state, if not, make the enable signal present an inactive state

Claims (9)

A method for starting an automatic current limit mechanism of a display is realized by a control circuit of a driver, the driver is used to drive a display panel, and the control circuit is used to generate a consistent energy signal to enable or disable an automatic limit A flow circuit is used to adjust the brightness of a display picture. The method includes the following steps: Calculating one RGB weighted average of each pixel in N pixels of the frame picture, and calculating the total average of one of the N RGB weighted averages Value, N is an integer greater than 1; multiply the total average value and a display brightness value to generate a product, where the display brightness value is provided by an application processor; and determine whether the product is greater than a threshold, if so , Make the enabling signal present an active state, if not, make the enable signal present an inactive state. As described in item 1 of the scope of patent application, the display panel is composed of organic light-emitting diode display panel, quantum dot light-emitting diode display panel, Mirco-LED display panel and Mini- A display panel selected by the group of LED display panels. A display has a display panel and a driver for driving the display panel, the driver has a control circuit to perform an automatic current limiting mechanism activation method, the method is used to generate a consistent energy signal to enable or disable a The automatic current limiting circuit adjusts the brightness of a display screen. The method includes the following steps: Perform a pixel averaging operation, which includes calculating one of the RGB weighted averages of each pixel in N pixels of the frame of the screen, and calculating N A total average of one of the RGB weighted averages, and N is an integer greater than 1. Performing a multiplication operation includes multiplying the total average and a display brightness value to generate a product, wherein the display brightness value Is from an application processor; and performs a comparison operation, which includes determining whether the product is greater than a threshold, if so, the enabling signal is rendered into an active state, if not, the enabling signal is rendered into an inactive state . The display described in item 3 of the scope of patent application, wherein the display panel is a group consisting of an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a Mirco-LED display panel and a Mini-LED display panel A display panel selected by the group. For the display described in item 3 of the scope of patent application, the control circuit has: an average pixel value calculation unit for performing the pixel average operation; a multiplication unit for performing the multiplication operation; And a comparison unit for performing the comparison operation. The display according to item 5 of the scope of patent application, wherein the control circuit further has a storage unit to store the R, G, B values of the N pixels, the total average value, the product, and the The stated threshold. For the display described in item 6 of the scope of patent application, the control circuit further has a microprocessor, and the microprocessor executes a program to realize the automatic current limiting mechanism activation method. An information processing device has a display as described in any one of items 3-7 in the scope of patent application to provide an automatic brightness adjustment function. For example, the information processing device described in item 8 of the scope of patent application is a smart phone or a portable computer device.

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