TWI694438B - Method for starting automatic current limiting mechanism of display, display and information processing device adopting the method - Google Patents

Abstract

A method for starting an automatic current limit mechanism of a display, which 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 uniform energy signal to enable or disable an automatic limit A stream circuit to adjust the brightness of a display screen, the method includes the following steps: calculating an RGB weighted average of each pixel of the N pixels of the frame image, and calculating a total average of N of the RGB weighted average Value, N is an integer greater than 1; multiply the total average value and a display brightness value to produce a product, wherein the display brightness value is provided by an application processor; and determine whether the product is greater than a threshold, if so , The enable signal is rendered in an active state, if not, the enable signal is rendered in an inactive state. In addition, the invention also discloses a display and an information processing device adopting the automatic current limiting mechanism activation method of the display.

Description

Method for starting automatic current limiting mechanism of display, display and information processing device adopting the method

The 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, the display has become one of the indispensable components.

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

However, because it is self-luminous , it will have the same problem as the light bulb, and the aging speed 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 organic light-emitting diode displays, users must look at websites that use white as the base color or look at blue pictures such as the ocean and sunny days, thereby affecting the user experience.

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

An object of the present invention is to disclose a method for starting an automatic current limiting mechanism of a display, which uses a control circuit of a driver to generate a uniform 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 method for starting an automatic current limiting mechanism of a display, which uses a control circuit of a driver to generate a uniform 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 a method for starting an automatic current limiting mechanism of a display, 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, a method for starting an automatic current limiting mechanism of 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 uniform energy signal To enable or disable an automatic current-limiting circuit to adjust the brightness of a display screen, the method includes the following steps: calculating the RGB weighted average of each of the N pixels of the frame image, and calculating the N One of the RGB weighted averages, the total average, N is an integer greater than 1; multiplying the total average and a display brightness value to produce a product, where the display brightness value is provided by an application processor; and judgment Whether the product is greater than a threshold, if so, the enable signal is rendered in an active state, and if not, the enable signal is rendered in an inactive state.

In a possible embodiment, 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 proposes a display having a display panel and a driver for driving the display panel, the driver having a control circuit to perform an automatic current limiting mechanism activation method, which is used to generate a uniform energy signal 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 average operation, which includes calculating the RGB weighting of each of the N pixels of the frame image An average value, and calculating a total average value of N of the RGB weighted average values, N is an integer greater than 1; performing a multiplication operation, which includes multiplying the total average value and a display brightness value to produce a product, Wherein, the display brightness value comes from an application processor; and performing a comparison operation, which includes determining whether the product is greater than a threshold, if so, enabling the enable signal to assume an active state, if not, enabling the enable The signal is rendered inactive.

In a possible embodiment, 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 an 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 described comparison operation.

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.

In one embodiment, the control circuit further has a microprocessor that implements the automatic current limiting mechanism activation method by executing a program.

In addition, the present invention further provides an information processing device having a display as described above to provide an automatic brightness adjustment function.

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

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

Please refer to FIG. 1, which illustrates a flowchart of an embodiment of the method for starting the automatic current limit mechanism of the display in this case, wherein the method is implemented by a control circuit of a driver, which is used to drive a display panel, And the control circuit is used to generate a uniform energy signal to enable or disable an automatic current limiting circuit to adjust the brightness of a display screen.

As shown in FIG. 1, the method includes the following steps: calculating an RGB weighted average value of each pixel in the N pixels of the frame image, and calculating a total average value of N RGB weighted average values, where N is An integer greater than 1 (step a); multiplying the total average value and a display brightness value to produce a product, wherein the display brightness value comes from an application processor (step b); and determining whether the product is greater than one The threshold, if yes, makes the enable signal assume an active state, if not, makes the enable signal assume an inactive state (step c).

The display panel (not shown in the figure) 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. 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 illustrates 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 coincidence 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 limit mechanism activation method by executing a program, the method includes: performing a pixel average operation, which includes calculating RGB weights of each of the N pixels of the frame image An average value, and calculating a total average value (Y _AVG ) of N of the RGB weighted average values, where N is an integer greater than 1, and the RGB weighted average value is equal to C1*R+C2*G+C3*B , R, G, B are a red sub-pixel value, a green sub-pixel value and a blue sub-pixel value, C1, C2, C3 are 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 produce 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, if so, enabling the enable signal EN to assume an _active state, if not, enabling the enable signal EN to present One is inactive.

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.

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

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

The comparison unit 125 is used to perform the 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 FIG. 3, the ACL critical curve is a hyperbola, which divides the DBV-Y _AVG coordinate plane into an area A below the curve and an area B above the curve, where (Y _AVG , DBV) falls in the area A At this time, the automatic current limiting circuit 111 will be disabled, and 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 illustrates 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, wherein 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 a possible embodiment, 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 method for starting the automatic current limiting mechanism 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 method of starting the automatic current limiting mechanism 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 method for starting the automatic current limiting mechanism of the display of the present invention can enable an automatic current limiting circuit to prevent the display screen from being too bleak even if the average pixel value is a high value under the requirement of low display brightness value .

The case disclosed in this case is a preferred embodiment, and any part of the modification or modification that originates from the technical idea of this case and can be easily inferred by those skilled in the art, does not deviate from the scope of patent rights in this case.

In summary, regardless of the purpose, means and efficacy of this case, it shows that it is very different from the conventional technology, and its first creation is practical and practical, and it really meets the patent requirements of the invention. I urge your reviewing committee to make a clear inspection and give the patent as soon as possible. Society is for supreme prayer.

Step a: Calculate the RGB weighted average value of each pixel in the N pixels of the frame image, and calculate the total average value of one of the N weighted average RGB values, N is an integer greater than 1

Step b: Multiply the total average value and a display brightness value to generate a product, wherein 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 show an active state, if not, make the enable signal show an inactive state

100: display

110: display panel

111: Automatic current limiting circuit

120: drive

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

Step a: Calculate one RGB weighted average value of each pixel in the N pixels of a frame, and calculate a total average value of N of the RGB weighted average values, N is an integer greater than 1

Step b: Multiply the total average value and a display brightness value to generate a product, wherein 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 show an active state, if not, make the enable signal show an inactive state

Claims (9)

A method for starting an automatic current limit mechanism of a display, which 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 uniform energy signal to enable or disable an automatic limit The flow circuit adjusts the brightness of a display screen. The method includes the following steps: calculating the RGB weighted average value of one of the N pixels in a frame of the picture, the RGB weighted average value being equal to C1*R+C2*G +C3*B, R, G, B are a red sub-pixel value, a green sub-pixel value and a blue sub-pixel value, C1, C2, C3 are real numbers between 0 and 1, and C1+C2+C3=1, and calculate a total average value of the N weighted average of RGB, N is an integer greater than 1; multiply the total average value and a display brightness value to produce a product, wherein, The display brightness value is provided by an application processor; and it is determined whether the product is greater than a threshold, if so, the enable signal is rendered in an active state, and if not, the enable signal is rendered in an inactive state. The method of starting the automatic current limiting mechanism of the display as described in item 1 of the patent application scope, wherein the display panel is composed of an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a Mirco-LED display panel and a Mini- A display panel selected by a group composed of LED display panels. A display having a display panel and a driver for driving the display panel, the driver having a control circuit to perform an automatic current limiting mechanism activation method, the method is used to generate a uniform energy signal to enable or disable a An automatic current limiting circuit to adjust the brightness of a display screen. The method includes the following steps: performing a pixel average operation, which includes calculating an RGB weighted average value of each of the N pixels in a frame of the picture, the RGB The weighted average is equal to C1*R+C2*G+C3*B, R, G, B are a red sub-pixel value, a green sub-pixel value and a blue sub-pixel value, C1, C2, C3 All are real numbers between 0 and 1, and C1+C2+C3=1, and calculate the total average of one of the N weighted average of RGB, N is an integer greater than 1; Performing a multiplication operation, which includes multiplying the total average value and a display brightness value to produce a product, wherein the display brightness value comes from an application processor; and performing a comparison operation, which includes determining whether the product is greater than A threshold, if yes, makes the enable signal assume an active state, if not, makes the enable signal assume an inactive state. The display as described in item 3 of the patent application scope, wherein the display panel is composed 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. The display according to item 3 of the patent application scope, wherein the control circuit has: an average pixel value calculation unit to perform the pixel average operation; a multiplication unit to perform the multiplication operation; And a comparison unit for performing the comparison operation. The display according to item 5 of the patent application scope, wherein 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 all The threshold mentioned. The display as described in item 6 of the patent application scope, wherein the control circuit further has a microprocessor which implements the automatic current limiting mechanism activation method by executing a program. An information processing device having a display as described in any one of patent application items 3-7 to provide an automatic brightness adjustment function. The information processing device described in item 8 of the patent application scope is a smart phone or a portable computer device.

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