TWI763074B - Method of dynamic adjustment to color of display screen - Google Patents

Abstract

A method of dynamic adjustment to color of display screen is provided. The method includes the following steps. Firstly, a current environmental color temperature is obtained. Then, a color temperature adjustment parameter of a display screen is determined according to a degree of difference between the current environmental color temperature and a current color temperature of the display screen. Next, a brightness adjustment parameter of the display screen is determined according to the color temperature adjustment parameter. Afterwards, the color temperature of the display screen is adjusted according to the color temperature adjustment parameter, and the brightness of the display screen is adjusted according to the brightness adjustment parameter.

Description

How to dynamically adjust the color of the display screen

The present invention relates to a method for dynamically adjusting a display screen, and more particularly, to a method for dynamically adjusting the color of a display screen.

At present, there are some electronic devices on the market that can simultaneously view the external environment while in use, such as optical transmissive head-mounted display devices, notebook computers, all-in-one computers, smart phones, and the like. When this type of electronic device displays an image, the color (color temperature or brightness) of the displayed image may not be exactly the same as the ambient light source. In addition, if the external environment is changed, the color of the display screen is often not automatically adjusted according to the change of the environment.

The present invention relates to a method for dynamically adjusting the color of a display screen, which can automatically adjust the color of the display screen according to changes in the environment.

According to an aspect of the present invention, a method for dynamically adjusting the color of a display screen is provided. The method includes the following steps. First, get the current ambient color temperature value. Next, according to the degree of difference between the current ambient color temperature value and the current color temperature value of the display screen, the color temperature control parameters of the display screen are determined. Next, according to the color temperature control parameters, the brightness control parameters of the display screen are determined. Then, the color temperature of the display screen is adjusted according to the color temperature adjustment parameter, and the brightness of the display screen is adjusted according to the brightness adjustment parameter.

In order to have a better understanding of the above-mentioned and other aspects of the present invention, the following specific examples are given and described in detail in conjunction with the accompanying drawings as follows:

100: Electronics

110: Image capture module

120: Processor

130: Display screen

140: storage unit

S100,S100': The method of dynamically adjusting the color of the display screen

S110, S111, S112, S120, S120’, S121, S122, S123, S124, S130, S131, S132, S133, S140, S140’, S141, S141’, S142, S142’: Steps

A, B: Contacts

Fig. 1 is a simplified functional block diagram of an electronic device according to an embodiment of the present invention; Fig. 2 is a flowchart of a method for dynamically adjusting the color of a display screen according to an embodiment of the present invention; Fig. 3 is a method of obtaining the current ambient color temperature value Figure 4 shows other steps of the method for dynamically adjusting display screen color according to the present invention; Figure 5 is a flow chart of the method for dynamically adjusting display screen color according to another embodiment of the present invention.

The various embodiments of the present invention will be described in detail below, with the accompanying drawings as examples. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, and any easy substitutions, modifications, and equivalent changes of any of the described embodiments are included within the scope of the present invention, and the subsequent patent scope prevail. In the description of the specification, in order to make the reader have a more complete understanding of the present invention, many specific details and implementation examples are provided; however, these specific details and implementation examples should not be regarded as limitations of the present invention. Also, well-known steps or elements have not been described in detail to avoid unnecessarily limiting the invention.

Please refer to FIG. 1, which is a simplified functional block diagram of an electronic device 100 according to an embodiment of the present invention. The electronic device 100 includes an image capture module 110 , a processor 120 and a display screen 130 . The image capturing module 110 and the display screen 130 are coupled to the processor 120 .

The processor 120 is, for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessors (Microprocessors), digital signal processors (DSPs), programmable A controller, an application specific integrated circuit (ASIC), a programmable logic device (PLD) or other similar devices or a combination of these devices, but the invention is not limited to this. The image capture module 110 is based on, for example, a Charge Coupled Device (CCD), a Complementary Metal-Oxide Semiconductor (CMOS) element parts or other types of photosensitive elements. The display screen 130 is, for example, but not limited to, a liquid crystal display, a light emitting diode display, and the like.

In one embodiment, the image capturing module 110 and the display screen 130 may be embedded in the electronic device 100 , so that the electronic device 100 is formed as an integrated machine, but the invention is not limited thereto. In other embodiments, the image capturing module 110 and the display screen 130 may be external.

In addition, in one embodiment, the electronic device 100 may further include a storage unit 140 coupled to the processor 120 . The storage unit 140 is, for example, any type of fixed or removable random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), flash memory (Flash memory), hard drive discs, other similar devices, or a combination of these devices, but the present invention is not limited thereto.

FIG. 2 is a flowchart of a method S100 for dynamically adjusting the color of a display screen according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 , the electronic device 100 recursively executes the process shown in the method S100 , so as to dynamically adjust the color of the display screen 130 .

In step S110, the processor 120 obtains the color temperature value of the current environment.

Please refer to FIG. 1 and FIG. 3 , wherein FIG. 3 is an embodiment of step S110 of obtaining the current ambient color temperature value. In step S111, the processor 120 obtains the white balance information of the image capturing module 110 for the current environment. In step S112, the processor 120 obtains the color temperature value corresponding to the white balance information as the current ambient color temperature value.

For example, a mapping table or a corresponding model can be stored in the storage unit 140 in advance, which records the corresponding relationship between the white balance value and the color temperature value, and the corresponding relationship is obtained through experiments, for example. For example, it is known from experiments that when the color temperature value is 6500K, the white balance value of the image capturing module 110 is 6300. If in step S111, the white balance value detected by the image capture module 110 for the current environment is 6300, then in step S112, the processor 120 can know the corresponding value according to the mapping table or the corresponding model of the storage unit 140. The obtained color temperature value is 6500K, and this color temperature value is used as the current ambient color temperature value.

Please refer to FIG. 1 and FIG. 2 , then step S120 is executed, and the processor 120 determines the control parameters of the display screen 130 . Here, the control parameters may include the color temperature control parameters in step S121 and the brightness control parameters in step S122.

Specifically, in step S121 , the processor 120 determines the color temperature control parameters of the display screen 130 according to the degree of difference between the current ambient color temperature value and the current color temperature value of the display screen 130 . If it is found that the current ambient color temperature value is lower than the current color temperature value of the display screen 130, the processor 120 sets the color temperature control parameter to lower, so as to lower the color temperature value of the display screen 130 to be close to the color temperature of the current environment. On the contrary, if it is found that the current ambient color temperature value is higher than the current color temperature value of the display screen 130, the processor 120 sets the color temperature adjustment parameter to increase to increase the color temperature value of the display screen 130 to be close to the color temperature of the current environment.

In addition, if it is found that the difference between the current ambient color temperature value and the current color temperature value of the display screen 130 is greater, the processor 120 will adjust the color temperature value of the display screen 130 by a greater range.

Next, in step S122, the processor 120 further determines the brightness adjustment parameter of the display screen 130 according to the color temperature adjustment parameter. If the color temperature control parameter is adjusted, the processor 120 will set the brightness control parameter to increase. That is to say, as long as the color temperature control parameters are adjusted in the previous step (step S121 ), the brightness of the display screen 130 needs to be increased to compensate for the brightness loss caused by the color temperature adjustment.

In addition, if the adjustment range of the color temperature control parameter in the previous step (step S121 ) is larger, the processor 120 will increase the brightness of the display screen 130 by a larger range.

In the process of determining the color temperature adjustment parameters of the display screen 130 in step S121 , the processor 120 may determine the color temperature adjustment parameters according to a mapping table or a corresponding model stored in the storage unit 140 . The mapping table or the corresponding model can obtain the corresponding relationship between the input (the degree of difference between the current ambient color temperature value and the current color temperature value of the display screen) and the output (color temperature control parameters) through prior experiments. Similarly, in the process of determining the brightness adjustment parameters of the display screen 130 in step S122 , the processor 120 can also determine the brightness adjustment parameters according to a mapping table or a corresponding model stored in the storage unit 140 .

After the setting of the control parameters of the display screen 130 is completed, step S140 is executed next, and the processor 120 adjusts the display screen 130 according to the control parameters. In step S141, the processor 120 adjusts the color temperature of the display screen 130 according to the color temperature control parameter determined in step S121. In step S142, the processor 120 root The brightness of the display screen 130 is adjusted according to the brightness adjustment parameters determined in step S122.

FIG. 4 shows other steps S130 of the method for dynamically adjusting the color of a display screen according to the present invention. Step S130 is an additional step performed based on the method S100 for dynamically adjusting the color of the display screen of the present invention, and is used to determine the adjustment object of the brightness adjustment parameter. It can be understood that step S130 is not a limitation of the present invention.

Please refer to FIG. 1 , FIG. 2 and FIG. 4 , the contact point A is connected after step S110 . After step S110 is completed, the processor 120 detects whether the power saving mode of the display screen 130 is turned on, as in step S131.

If it is not enabled, as shown in step S132 , the processor 120 determines that the adjustment object of the brightness adjustment parameter is mainly to adjust the backlight brightness of the display screen 130 . If the backlight brightness of the display screen 130 has been adjusted to the brightest, the digital gamma parameter will be adjusted next.

If it is detected that the power saving mode of the display screen 130 is turned on, as shown in step S133, the adjustment object of the brightness control parameter is mainly to adjust the digital gamma parameter of the display screen 130 instead of the backlight brightness; Adjust the brightness of the backlight slightly to save power.

After determining the adjustment object of the brightness adjustment parameter, the node B returns to step S142, and the processor 120 adjusts the brightness of the display screen 130 according to the brightness adjustment parameter and the adjustment object of the brightness adjustment parameter.

In Fig. 2, steps S141 and S142 can be adjusted simultaneously. In one embodiment, the color temperature and brightness of the display screen 130 are adjusted simultaneously and at the same speed.

For example, FIG. 5 is a flowchart of a method S100' for dynamically adjusting the color of a display screen according to another embodiment of the present invention. The differences between this embodiment and the embodiment in FIG. 2 will be replaced by different symbols, and the other similarities or similarities will not be repeated.

Referring to FIG. 1 and FIG. 5, as shown in step S120', in the process of determining the adjustment parameters of the display screen 130, the processor 120 further determines the adjustment speed. That is to say, in this embodiment, the control parameters include not only the color temperature control parameters and the brightness control parameters, but also the control speed.

In step S123, the processor 120 calculates the absolute difference between the current ambient color temperature value and the previous ambient color temperature value. Here, the current ambient color temperature value and the previous ambient color temperature value may be a value, and the processor 120 may read the color temperature value in minutes, seconds or other time intervals; or, the current ambient color temperature value and the previous ambient color temperature value may also be a value The average value of the sequence segment, but the present invention is not limited to this.

Next, in step S124, the processor 120 determines the control speed according to the magnitude of the absolute difference. Here, the regulation speed may be, but not limited to, a single speed, a gradually changing speed, and the like. If the difference between the current ambient color temperature value and the previous ambient color temperature value is large, a faster adjustment speed can be set; if the difference between the current ambient color temperature value and the previous ambient color temperature value is small, a slower adjustment speed can be set speed to adjust to the target value within a valid time. After the color temperature control parameters, brightness control parameters and control speed are determined, step S140' is executed, and the color temperature and brightness of the display screen 130 are determined according to the color temperature control parameters determined in step S121, the brightness control parameters determined in step S122, and step S124. As shown in step S141' and step S142', the adjustment speed of step S141' and step S142' can be adjusted at the same time and at the same speed.

Therefore, the speed of adjustment can be set according to the difference between the front and rear ambient color temperature values, so as to adjust the color temperature and brightness adjustment parameters in response to the changes of the ambient color temperature value in real time. In addition, by determining the adjustment speed of the color temperature and brightness adjustment parameters, it is possible to prevent the color temperature and brightness of the display screen 130 from changing abruptly, so that the user may feel flickering when viewing the display screen 130, which slows down the adjustment process. discomfort caused.

The present invention enables the color temperature of the display screen to be closer to the color temperature of the current environment through the above-mentioned embodiments, so that the displayed image is more integrated into the real environment, and in addition, a certain brightness can be maintained.

To sum up, although the present invention has been disclosed by the above embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

S100: A method of dynamically adjusting the color of the display screen

S110, S120, S121, S122, S140, S141, S142: Steps

A, B: Contacts

Claims (9)

A method for dynamically adjusting the color of a display screen, comprising: obtaining a current ambient color temperature value; determining a color temperature control parameter of the display screen according to a degree of difference between the current ambient color temperature value and the current color temperature value of a display screen; a color temperature adjustment parameter, which determines a brightness adjustment parameter of the display screen; adjusts the color temperature of the display screen according to the color temperature adjustment parameter; detects whether the power saving mode of the display screen is turned on, so as to determine an adjustment object of the brightness adjustment parameter; and Adjust the brightness of the display screen according to the brightness control parameter. The method for dynamically adjusting the color of a display screen according to claim 1, wherein the step of obtaining the current environment color temperature value comprises: obtaining a white balance information of an image capture module for the current environment; and obtaining the white balance information corresponding to the The color temperature value is used as the current ambient color temperature value. The method for dynamically adjusting a display screen color according to claim 1, further comprising: calculating an absolute difference between the current ambient color temperature value and a previous ambient color temperature value; and determining a control speed according to the absolute difference value ; The color temperature and brightness of the display screen are adjusted according to the control speed. The method for dynamically adjusting the color of a display screen as claimed in claim 1, wherein the color temperature and brightness of the display screen are adjusted synchronously. The method for dynamically adjusting the color of a display screen as claimed in claim 1, wherein the step of determining the adjustment object of the brightness control parameter includes: when the power saving mode of the display screen is turned off, the adjustment object is mainly to adjust the backlight brightness; And when the power saving mode of the display screen is turned on, the adjustment object is mainly to adjust the digital gamma parameter. The method for dynamically adjusting the color of a display screen according to claim 1, wherein the step of determining the color temperature control parameter of the display screen includes: when the current ambient color temperature value is lower than the current color temperature value of the display screen, the color temperature control parameter It is set to lower the current color temperature value of the display screen to the current ambient color temperature value; and when the current ambient color temperature value is higher than the current color temperature value of the display screen, the color temperature adjustment parameter is set to the current color temperature of the display screen The value is adjusted up to the current ambient color temperature value. The method for dynamically adjusting the color of a display screen according to claim 6, wherein: if the current ambient color temperature value is lower than the current color temperature value of the display screen by a greater degree of difference, the color temperature control parameter is set to a value in the display screen. The current color temperature value of the display screen is lowered to the current ambient color temperature value with a larger adjustment range within the color temperature adjustment interval; and if the current ambient color temperature value is higher than the current color temperature value of the display screen, the difference degree is greater, the The color temperature adjustment parameter is set to increase the current color temperature value of the display screen to the current ambient color temperature value with a larger adjustment range within the color temperature adjustment range of the display screen. The method for dynamically adjusting the color of a display screen as claimed in claim 7, wherein the step of determining the brightness adjustment parameter of the display screen includes: if the color temperature adjustment parameter is set to a larger adjustment range within the color temperature adjustment interval of the display screen The current color temperature value of the display screen is adjusted down or up to the current ambient color temperature value, and the brightness adjustment parameter is set to increase the brightness of the display screen with a larger adjustment range within the brightness adjustment range of the display screen. A method for dynamically adjusting the color of a display screen, comprising: obtaining a current ambient color temperature value; determining a color temperature control parameter of the display screen according to a degree of difference between the current ambient color temperature value and the current color temperature value of a display screen; According to the color temperature control parameter, a brightness control parameter of the display screen is determined; an absolute difference between the current ambient color temperature value and a previous ambient color temperature value is calculated; a control speed is determined according to the magnitude of the absolute difference; according to the The color temperature adjustment parameter adjusts the color temperature of the display screen, wherein the color temperature of the display screen is adjusted according to the adjustment speed; and the brightness of the display screen is adjusted according to the brightness adjustment parameter, wherein the brightness of the display screen is adjusted according to the adjustment speed .

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