CN111554218A - Display parameter determination method and device and display equipment - Google Patents
Display parameter determination method and device and display equipment Download PDFInfo
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Abstract
The invention discloses a display parameter determination method, a display parameter determination device and display equipment. When the display parameter determination method is applied, firstly, gamma adjustment is carried out on the display device based on an intermediate refresh rate between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to the intermediate refresh rate. And secondly, driving the display device through the gamma voltage to display based on the first refresh rate and the second refresh rate respectively to obtain a first display image and a second display image. Then, a display parameter difference between the first display image and the second display image corresponding to each gamma voltage is determined. And finally, determining the reference gamma voltage of the display equipment according to the display parameter difference. The reference gamma voltage is used when the display device works at the first refresh rate and the second refresh rate, so that the brightness of the display device can not be obviously different when the display device is switched between the first refresh rate and the second refresh rate.
Description
Technical Field
The invention belongs to the technical field of display parameter adjustment, and particularly relates to a display parameter determination method and device and display equipment.
Background
The refresh rate is an important parameter for characterizing the stability of the displayed image of the display device. The higher the refresh rate, the more stable the image displayed by the display device. As user demands have increased, high refresh rate (e.g., 90Hz) display devices have become increasingly used. Current display devices can now switch between different refresh rates. For example, when a user views text through a display device, the display device may operate at a relatively low refresh rate (e.g., 60 Hz). As another example, when a user is watching an animation or playing a game versus combat through the display device, the display device may operate at a relatively high refresh rate (e.g., 90 Hz). However, when switching between different refresh rates, there may be a significant difference in the display brightness of the display device.
Disclosure of Invention
The invention provides a display parameter determination method, a display parameter determination device and display equipment, and aims to solve the problem that display brightness is obviously different when the display equipment is switched among different refresh rates.
The technical scheme adopted is as follows.
A display parameter determination method for performing a determination of display parameters for a display device having a first refresh rate and a second refresh rate, the method comprising:
performing gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to each intermediate refresh rate;
driving the display device to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to each intermediate refresh rate to obtain a first display image and a second display image;
calculating a display parameter difference value between the first display image and the second display image corresponding to each gamma voltage; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
determining a reference gamma voltage of the display equipment according to the display parameter difference; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
Further, determining a reference gamma voltage of the display device according to the display parameter difference includes:
and determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage.
Further, the method further comprises:
driving at least one other display device to display based on the first refresh rate and the second refresh rate respectively by using the reference gamma voltage to obtain a third display image and a fourth display image;
calculating a display parameter difference between the third display image and the fourth display image;
judging whether the error between the display parameter difference value between the third display image and the fourth display image and the minimum display parameter difference value is within a preset range or not;
and if the error is within the preset range, determining the reference gamma voltage as the reference gamma voltage of other display equipment.
Furthermore, the at least two intermediate refresh rates are more than two, and the frequency intervals between any two adjacent intermediate refresh rates are the same; determining a reference gamma voltage of the display device according to the display parameter difference, including:
judging whether the minimum display parameter difference is less than or equal to a set threshold value or not;
if so, determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage;
if not, reducing the frequency interval between adjacent intermediate refresh rates to increase the number of the intermediate refresh rates, and returning to the step of performing gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to each intermediate refresh rate.
A display parameter determination apparatus for performing a determination of display parameters for a display device having a first refresh rate and a second refresh rate, the apparatus comprising:
the gamma adjusting module is used for carrying out gamma adjustment on the display equipment based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain gamma voltage corresponding to each intermediate refresh rate;
the image display module is used for driving the display equipment to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to each intermediate refresh rate to obtain a first display image and a second display image;
the parameter calculation module is used for calculating a display parameter difference value between the first display image and the second display image corresponding to each gamma voltage; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
the gamma determining module is used for determining a reference gamma voltage of the display equipment according to the display parameter difference; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
Further, the gamma determination module is specifically configured to:
and determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage.
Further, the apparatus further comprises a gamma verification module configured to:
driving at least one other display device to display based on the first refresh rate and the second refresh rate respectively by using the reference gamma voltage to obtain a third display image and a fourth display image;
calculating a display parameter difference between the third display image and the fourth display image;
judging whether the error between the display parameter difference value between the third display image and the fourth display image and the minimum display parameter difference value is within a preset range or not;
and if the error is within the preset range, determining the reference gamma voltage as the reference gamma voltage of other display equipment.
Furthermore, the at least two intermediate refresh rates are multiple, and the frequency intervals between any two adjacent intermediate refresh rates are the same; determining a reference gamma voltage of the display device according to the display parameter difference, including:
judging whether the minimum display parameter difference is less than or equal to a set threshold value or not;
if so, determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage;
if not, reducing the frequency interval between adjacent intermediate refresh rates to increase the number of the intermediate refresh rates, and returning to the step of performing gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to each intermediate refresh rate.
A display parameter determination method for performing a determination of display parameters for a display device having a first refresh rate and a second refresh rate, the method comprising:
performing gamma adjustment on the display device based on an intermediate refresh rate between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to the intermediate refresh rate;
driving the display device to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to the intermediate refresh rate to obtain a first display image and a second display image;
calculating a display parameter difference between the first display image and the second display image; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
when the display parameter difference is smaller than or equal to a set threshold value, determining the gamma voltage corresponding to the intermediate refresh rate as a reference gamma voltage of the display equipment; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
Further, the method further comprises:
when the display parameter difference is larger than the set threshold, changing the intermediate refresh rate;
and returning to the step of performing gamma adjustment on the display device based on the intermediate refresh rate between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to the intermediate refresh rate.
Further, changing the intermediate refresh rate includes:
and increasing or decreasing the intermediate refresh rate according to the set step size.
A display parameter determination apparatus for performing a determination of display parameters for a display device having a first refresh rate and a second refresh rate, the apparatus comprising:
the gamma adjusting module is used for carrying out gamma adjustment on the display equipment based on an intermediate refresh rate between the first refresh rate and the second refresh rate to obtain gamma voltage corresponding to the intermediate refresh rate;
the image display module is used for driving the display equipment to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to the intermediate refresh rate to obtain a first display image and a second display image;
a parameter calculation module for calculating a display parameter difference between the first display image and the second display image; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
the gamma determining module is used for determining the gamma voltage corresponding to the intermediate refresh rate as the reference gamma voltage of the display equipment when the display parameter difference is smaller than or equal to a set threshold value; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
Further, the gamma determination module is further configured to:
when the display parameter difference is larger than the set threshold, changing the intermediate refresh rate;
and returning to the step of performing gamma adjustment on the display device based on the intermediate refresh rate between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to the intermediate refresh rate.
Further, the gamma determination module is specifically configured to:
and increasing or decreasing the intermediate refresh rate according to a set step size.
A computer device comprising a processor and a memory and bus connected to the processor; wherein, the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory so as to execute the display parameter determination method.
A computer-readable storage medium on which a program is stored, which when executed by a processor, implements the above-described display parameter determination method.
A display device having a first refresh rate and a second refresh rate, the display device operating at either the first refresh rate or the second refresh rate using a reference gamma voltage determined by the method described above.
When the technical scheme is applied, firstly, the gamma adjustment is carried out on the display device based on the intermediate refresh rate between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to the intermediate refresh rate. And secondly, driving the display device through the gamma voltage to display based on the first refresh rate and the second refresh rate respectively to obtain a first display image and a second display image. Then, a display parameter difference between the first display image and the second display image corresponding to each gamma voltage is determined. And finally, determining the reference gamma voltage of the display equipment according to the display parameter difference. The reference gamma voltage is used when the display device works at the first refresh rate or the second refresh rate, so that the brightness of the display device can not be obviously different when the display device is switched between the first refresh rate and the second refresh rate.
Drawings
Fig. 1 is a flowchart of a display parameter determining method according to an embodiment of the present invention.
Fig. 2 is another flowchart of a display parameter determining method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a determination of a display parameter difference according to an embodiment of the present invention.
Fig. 4 is a block diagram of a display parameter determining apparatus according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a hardware structure of a computer device according to an embodiment of the present invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
When the display device is switched between different refresh rates, if the display device is driven by a gamma voltage corresponding to one of the refresh rates of the display device to display at the different refresh rates, the display device may have a significant brightness difference at the different refresh rates.
If the display device is driven to display at each refresh rate by using the gamma voltage corresponding to the refresh rate, the display brightness difference when the display device is switched between different refresh rates can be improved, but a plurality of groups of gamma voltages corresponding to each display device need to be determined. In the case where the display device has a plurality of refresh rates, the production efficiency of the display device is certainly lowered.
Therefore, the embodiment of the present application provides a method for determining display parameters, which can determine a reference gamma voltage that can be commonly used when a display device operates at different refresh rates, so as to ensure that the brightness of the display device does not significantly differ when the display device switches between a first refresh rate and a second refresh rate, and avoid setting multiple groups of gamma voltages for the same display device, thereby ensuring the production efficiency of the display device. The above display parameter determination method will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for determining display parameters according to an embodiment of the present application, for determining a reference gamma voltage of a display device having two refresh rates (e.g., a first refresh rate and a second refresh rate), so that the reference gamma voltage is used when the display device operates at the first refresh rate or the second refresh rate, which is described in detail below.
Step S21, performing gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to each intermediate refresh rate.
Step S22, driving the display device to display according to the first refresh rate and the second refresh rate by the gamma voltage corresponding to each intermediate refresh rate, respectively, to obtain a first display image and a second display image.
In step S23, a display parameter difference between the first display image and the second display image corresponding to each gamma voltage is calculated.
In step S24, a reference gamma voltage of the display device is determined according to the display parameter difference.
In this embodiment, the display device may be an electronic device with a display function, such as a mobile phone, a tablet, a notebook computer, or a television. The display device can display at a plurality of refresh rates, and the present embodiment is described by taking as an example that the display device has a first refresh rate and a second refresh rate. Wherein the first refresh rate may be 60Hz and the second refresh rate may be 90 Hz.
In step S21, the gamma voltage may be a set of gamma voltage values or a set of gamma voltages for driving the display device to display an image.
In step S22, the first display image may be an image that the display device displays based on the first refresh rate driven by the gamma voltage corresponding to each intermediate refresh rate. The second display image may be an image that is displayed by the display device based on the second refresh rate driven by the gamma voltage corresponding to each intermediate refresh rate.
In this embodiment, the parent images of the first display image and the second display image are the same image. For example, the first display image is an image obtained by the display device displaying the parent image based on a first refresh rate, and the second display image is an image obtained by the display device displaying the parent image based on a second refresh rate.
In step S23, the display parameter difference value may include at least one of a luminance difference value and a color coordinate difference value. The display parameter difference is used to describe a difference between the first display image and the second display image, and may be used to describe a display brightness difference when the display device displays the same image based on different refresh rates under the same gamma voltage.
When the method described in the above-mentioned steps S21-S24 is applied, the display brightness difference of the display device when displaying at different refresh rates can be improved by determining a gamma voltage corresponding to an intermediate refresh rate between the first refresh rate and the second refresh rate as a reference gamma voltage (common gamma voltage) when the display device operates at the first refresh rate or the second refresh rate. In this way, when the display device is switched under different refresh rates, no obvious brightness difference occurs in the displayed image or picture.
In an alternative embodiment, in step 24, the gamma voltage corresponding to the minimum display parameter difference may be determined as the reference gamma voltage. In this way, it is possible to ensure that the display luminance difference when the display device is driven by the reference gamma voltage to perform display at different refresh rates is minimized.
After the reference gamma voltages are determined through the above-described steps S21 to S24, the reference gamma voltages may be verified. For example, the reference gamma voltage may be verified by other display devices. In the present embodiment, the other display devices are the same batch and the same model of display devices as those in the above-mentioned steps S21 to S24.
Further, verifying the reference gamma voltage may specifically include what is described in the following steps:
firstly, driving at least one other display device by using a reference gamma voltage to display based on a first refresh rate and a second refresh rate respectively to obtain a third display image and a fourth display image;
secondly, calculating a display parameter difference value between the third display image and the fourth display image;
and finally, judging whether the error between the display parameter difference value between the third display image and the fourth display image and the minimum display parameter difference value is within a preset range.
It is understood that, if the error is within the preset range, the reference gamma voltage is determined as the reference gamma voltage of the other display device, and the reference gamma voltage may be applied to the other devices of the same batch as the display device. In the present embodiment, the intermediate refresh rate corresponding to the reference gamma voltage may be understood as a reference refresh rate of the display device.
For example, if the XXX-type mobile phone M has refresh rates of 60Hz and 90Hz, and the reference gamma voltage value of the mobile phone M is determined as U by the above method, and the intermediate refresh rate corresponding to the reference gamma voltage value U is 76Hz, 76Hz may be determined as the reference refresh rate of the mobile phone M. By determining the reference refresh rate of the display device, the reference gamma voltage of the display device in batch can be directly determined according to the gamma adjustment result under the reference refresh rate when the display device is produced in batch at a later stage. It should be understood that the reference refresh rate of 76Hz is only illustrated as an example, and in practical applications, the reference refresh rate may be an intermediate refresh rate between 60Hz and 90Hz, other than 76Hz, and is not limited herein.
In an alternative embodiment, the at least two intermediate refresh rates may be two or more, and the frequency interval between any two adjacent intermediate refresh rates is the same. For example, the frequency interval may be 5Hz, and the intermediate refresh rate may be 65Hz, 70Hz, 75Hz, 80Hz, 85Hz, and so on. Hereinafter, the method of the embodiment of the present application is schematically described by taking an example in which the intermediate refresh rate includes five frequencies of 65Hz, 70Hz, 75Hz, 80Hz, and 85 Hz. Of course, in the implementation, the frequency interval may be adjusted according to the processing efficiency of the computer device, and is not limited herein.
Gamma voltage U corresponding to 65Hz refresh rate of display device65Is driven to display on the basis of 60Hz and 90Hz, and the difference value of the display parameters between the first display image and the second display image is D65；
Gamma voltage U corresponding to 70Hz refresh rate of display device70Is driven to display on the basis of 60Hz and 90Hz, and the difference value of the display parameters between the first display image and the second display image is D70；
Gamma voltage U corresponding to 75Hz refresh rate of display device75Is driven to display on the basis of 60Hz and 90Hz, and the difference value of the display parameters between the first display image and the second display image is D75；
Gamma voltage U corresponding to refresh rate of 80Hz of display equipment80Is driven to display on the basis of 60Hz and 90Hz, and the difference value of the display parameters between the first display image and the second display image is D80；
Gamma voltage U corresponding to 85Hz refresh rate of display device85Is driven to display on the basis of 60Hz and 90Hz, and the difference value of the display parameters between the first display image and the second display image is D85。
Suppose passing pair D65、D70、D75、D80And D85Comparing to determine D80At the minimum value, the gamma voltage U can be set80Is determined as a reference gamma voltage of the display device. Thus, the display device is switched between 60Hz and 90Hz refresh rates by the gamma voltage U80The display device is driven to display, the display brightness difference of the display device can be effectively improved, and the display brightness difference is avoided when the display device is switched from a 60Hz refresh rate to a 90Hz refresh rate or from the 90Hz refresh rate to the 60Hz refresh rate.
In addition, assuming that the display parameter difference includes a luminance difference and a color coordinate difference, the method of the embodiment of the present application is also schematically illustrated by taking an example in which the intermediate refresh rate includes five intermediate refresh rates of 65Hz, 70Hz, 75Hz, 80Hz, and 85 Hz.
For example, D65、D70、D75、D80And D85Are respectively (L)65，Y65)、(L70，Y70)、(L75， Y75)、(L80，Y80) And (L)85，Y85). Wherein L is65、L70、L75、L80And L85Representing the brightness difference between a first display image and a second display image which are obtained by driving the display device to display at the refresh rate of 60Hz and 90Hz by gamma voltages respectively corresponding to 60Hz, 70Hz, 75Hz, 80Hz and 85 Hz; y is65、 Y70、Y75、Y80And Y85Respectively represent 60Hz, 70Hz, 75Hz, 80HzThe gamma voltages corresponding to Hz and 85Hz drive the display device to display the difference in color coordinates between the resulting first display image and the second display image at refresh rates of 60Hz and 90Hz, respectively. If the minimum brightness difference and the minimum color coordinate difference are L respectively70And Y70Then the gamma voltage corresponding to 70Hz is used as the reference gamma voltage.
Since the luminance difference and color coordinate difference between the displayed images are substantially uniform, for example, if the minimum luminance difference is L70Then the corresponding minimum color coordinate difference is Y70. Therefore, in the embodiment of the present application, the display parameter difference value may be one of a luminance difference and a color coordinate difference. If the display parameter difference includes only a luminance difference or a color coordinate difference, the display frequency corresponding to the minimum luminance difference or the minimum color coordinate difference may be used as the reference refresh rate, and the gamma voltage corresponding to the reference refresh rate may be used as the reference gamma voltage.
In specific implementation, the gamma adjustment is performed on the display device in step S21, so that the display effect of the display device can be ensured, the "step" effect is avoided, and the non-linear brightness correction of the display device is further implemented. In this way, a linear output of the image by the display device can be ensured.
Taking the display as an example, the preset gamma value of the display may be 2.2. When the display device is switched to a certain intermediate refresh rate f, the gamma value of the display device at the refresh rate f may be different from the preset gamma value, and the gamma curve of the display device at the refresh rate f may be different from the preset gamma curve. In this case, the input voltage of the display device may be adjusted to adjust the gamma curve of the display device at the intermediate refresh rate f such that the gamma curve of the display device at the intermediate refresh rate f coincides or substantially coincides with the preset gamma curve.
For example, assuming that when the input voltage U1 of the display device is adjusted to U2, the gamma curve of the display device at the intermediate refresh rate f coincides or approximately coincides with the preset gamma curve, U2 may be determined as the gamma voltage of the display device at the intermediate refresh rate f. Therefore, the gamma adjustment can be respectively carried out when the display equipment is at different intermediate refresh rates, and then the gamma voltage of the display equipment at each intermediate refresh rate can be accurately determined.
In an alternative embodiment, the determining the reference gamma voltage of the display device according to the display parameter difference described in step S24 may specifically include the following steps S241 to S243.
Step S241, judging whether the minimum display parameter difference is less than or equal to a set threshold value; if yes, go to step S242; if not, the process proceeds to step S243.
In step S242, the gamma voltage corresponding to the minimum display parameter difference is determined as the reference gamma voltage.
In step S243, the frequency interval between adjacent intermediate refresh rates is narrowed to increase the number of intermediate refresh rates, and the process returns to step S21.
In this embodiment, the set threshold may be obtained from a limited number of experiments and tests, and is not limited herein.
For convenience of explanation, the above steps S241 to S243 will be described below with a specific example.
Suppose five intermediate refresh rates 65Hz, 70Hz, 75Hz, 80Hz, and 85Hz between the first refresh rate 60Hz and the second refresh rate 90Hz are determined at a frequency interval of 5 Hz. If the intermediate refresh rate is 80Hz, the corresponding display parameter difference D80Is the minimum display parameter difference, and the display parameter difference D80Above the set threshold M, the frequency interval may be narrowed by 5Hz to increase the number of intermediate refresh rates.
Assuming that the frequency interval is narrowed from 5Hz to 4Hz, the intermediate refresh rate between the first refresh rate of 60Hz and the second refresh rate of 90Hz may be 64Hz, 68Hz, 72Hz, 76Hz, 80Hz, 84Hz, and 88Hz, and then the execution returns to step S21. Suppose that the intermediate refresh rate is 76Hz corresponding to the display parameter difference D76Is the minimum display parameter difference, and the display parameter difference D76Less than or equal to the set threshold M, the minimum display parameter difference D may be determined76Corresponding gamma voltage U76Is determined as the reference gamma voltage. In this way, a more accurate intermediate refresh rate can be determined, thereby determiningAnd a reference gamma voltage satisfying a set threshold determination condition.
In an alternative embodiment, if it is determined that the minimum display parameter difference is greater than the set threshold value through step S241, a plurality of intermediate refresh rates may be further determined by:
(1) narrowing the frequency interval;
(2) determining a plurality of target intermediate refresh rates from between two intermediate refresh rates adjacent to the intermediate refresh rate corresponding to the minimum display parameter difference at the reduced frequency interval, and then determining the reference gamma voltage according to the steps of step S21-step S24 based on the plurality of target intermediate refresh rates.
Assuming that five intermediate refresh rates of 65Hz, 70Hz, 75Hz, 80Hz and 85Hz between the first refresh rate of 60Hz and the second refresh rate of 90Hz are determined at a frequency interval of 5Hz, then the minimum display parameter difference is determined as the display parameter difference D75And displaying the parameter difference D75Greater than a set threshold M.
Under the above premise, the frequency interval of 5Hz can be reduced to 2Hz, and then the difference D between the display parameter and the frequency interval can be obtained75And determining a plurality of target intermediate refresh rates 72Hz, 74Hz, 76Hz and 78Hz between the intermediate refresh rate 70Hz and the intermediate refresh rate 80Hz which are adjacent to the corresponding intermediate refresh rate 75Hz, and then determining the reference gamma voltage according to the steps from step S21 to step S24 based on the plurality of target intermediate refresh rates 72Hz, 74Hz, 76Hz and 78 Hz. Suppose that the display parameter difference D is determined76Less than or equal to the set threshold M, the minimum display parameter difference D may be determined76Corresponding gamma voltage U76Is determined as the reference gamma voltage.
In this way, the intermediate refresh rate can be further selected and determined according to the display parameter difference value closest to the set threshold value M, and the reference gamma voltage can be determined at a more accurate intermediate refresh rate.
In specific implementation, another method for continuously fitting the intermediate refresh rate according to the set step length to determine the reference gamma voltage meeting the preset determination condition is provided in the embodiments of the present application. To this end, referring to fig. 2, an embodiment of the present invention further provides a method for determining display parameters, which may specifically include the following steps.
Step S31, performing gamma adjustment on the display device based on the intermediate refresh rate between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to the intermediate refresh rate.
Step S32, driving the display device to display according to the first refresh rate and the second refresh rate by the gamma voltage corresponding to the intermediate refresh rate, respectively, to obtain a first display image and a second display image.
In step S33, a display parameter difference between the first display image and the second display image is calculated.
In step S34, it is determined whether the display parameter difference is less than or equal to the set threshold. If the value is less than or equal to the set threshold, go to step S35; if the threshold value is larger than the set threshold value, the process proceeds to step S36.
In step S35, when the display parameter difference is less than or equal to the set threshold, the gamma voltage corresponding to the intermediate refresh rate is determined as the reference gamma voltage of the display device.
And step S36, when the display parameter difference is larger than the set threshold, changing the intermediate refresh rate, and then returning to the step S31.
The description about the above steps S31-S33 can refer to the description about the steps S21-S23, and will not be further explained here.
In step S35, the set threshold may be understood as a threshold of brightness difference, and if the display parameter difference is smaller than the set threshold, the display brightness difference is not obvious when the display device is driven by the gamma voltage corresponding to the display parameter difference to perform refresh rate switching. In this case, a gamma voltage of the display device corresponding to the display parameter difference may be determined as a reference gamma voltage value of the display device.
In step S36, changing the intermediate refresh rate may be understood as incrementing or decrementing the intermediate refresh rate by a set step size. Thus, whether the display parameter difference corresponding to the new intermediate refresh rate meets the judgment condition that the display parameter difference is less than or equal to the set threshold value can be continuously judged. And if the judgment condition is not met, continuously adjusting the intermediate refresh rate according to the set step length until the display parameter difference value corresponding to the latest intermediate refresh rate meets the judgment condition that the difference value is less than or equal to the set threshold value.
For the sake of understanding, the description will be made by taking as an example the step size set to 5Hz and the initial intermediate refresh rate set to 65 Hz. Determining that the difference value of the display parameters corresponding to the intermediate refresh rate of 65Hz is D through the method described in the above step S31-step S3365If the parameter difference D is displayed65If the intermediate refresh rate is less than or equal to the set threshold value M, the gamma voltage U corresponding to the intermediate refresh rate of 65Hz is used65Is determined as a reference gamma voltage of the display device.
If the difference D of the display parameters65If the intermediate refresh rate is larger than the set threshold value M, the intermediate refresh rate is changed from 65Hz to 70Hz according to the set step length of 5Hz, and then the difference value of the display parameters corresponding to the intermediate refresh rate of 70Hz is determined to be D70. It will be appreciated that if the parameter difference D is displayed70If the intermediate refresh rate is less than or equal to the set threshold value M, the gamma voltage U corresponding to the intermediate refresh rate of 70Hz70And determining the reference gamma voltage of the display device, and otherwise, continuously changing the intermediate refresh rate from 70Hz to 75Hz according to the set step size of 5Hz and repeatedly executing the steps.
In specific implementation, if the difference value of the display parameter corresponding to the intermediate refresh rate of 85Hz is D85If the determination condition is not satisfied, the set step size may be reduced, and the above steps may be continued. For example, the set step size may be reduced to 2Hz, and then the contents of the above-described steps S31-S35 may be performed at 62Hz as the initial intermediate refresh rate.
It is understood that the reference gamma voltages of the display device can be determined as well through the descriptions of the above steps S31-S36. Further, by reducing the set step size and fitting the intermediate refresh rate based on the set step size after reduction, the display device parameter less than or equal to the set threshold can be determined, and thus the reference gamma voltage of the display device can be determined.
FIG. 3 is a schematic diagram showing a display parameter difference determination, wherein the abscissa in FIG. 3 represents the refresh rate and the ordinate represents the refresh rateThe coordinates represent the corresponding display parameter difference at each refresh rate. It can be understood that if the intermediate refresh rate and the corresponding display parameter difference are fitted with the set step length of 5Hz, each determined display parameter difference is greater than the set threshold M. In this case, if the set step is reduced from 5Hz to 2.5Hz, the display parameter difference D corresponding to the intermediate refresh rate 67.5Hz can be determined67.5If the refresh rate is less than the set threshold M, the gamma voltage U corresponding to the intermediate refresh rate of 67.5Hz can be obtained67.5Is determined as a reference gamma voltage of the display device.
It can be understood that the fitting accuracy of the intermediate refresh rate can be improved by reducing the set step length, so that the display parameter difference value smaller than or equal to the set threshold value is determined, and the reference gamma voltage of the display device is determined.
On the basis of the above, the embodiment of the present invention further provides a block diagram of a display parameter determination apparatus 200. As shown in fig. 4, the display parameter determination apparatus 200 includes a gamma adjustment module 210, an image display module 220, a parameter calculation module 230, and a gamma determination module 240.
The gamma adjusting module 210 performs gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to each intermediate refresh rate.
The image display module 220 drives the display device to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to each intermediate refresh rate, so as to obtain a first display image and a second display image.
The parameter calculating module 230 calculates a display parameter difference between the first display image and the second display image corresponding to each gamma voltage; wherein the display parameter difference comprises at least one of a luminance difference value and a color coordinate difference value.
The gamma determining module 240 determines a reference gamma voltage of the display device according to the display parameter difference; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
For detailed implementation of the gamma adjustment module 210, the image display module 220, the parameter calculation module 230 and the gamma determination module 240, reference may be made to the description of steps S21-S24 shown in fig. 1, and therefore, no further description is made here.
In an alternative embodiment, the gamma determining module 240 is specifically configured to:
and determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage.
In an alternative embodiment, the apparatus further comprises a gamma verification module 250 for:
driving at least one other display device to display based on the first refresh rate and the second refresh rate respectively by using the reference gamma voltage to obtain a third display image and a fourth display image;
calculating a display parameter difference between the third display image and the fourth display image;
judging whether the error between the display parameter difference value between the third display image and the fourth display image and the minimum display parameter difference value is within a preset range or not;
and if the error is within the preset range, determining the reference gamma voltage as the reference gamma voltage of other display equipment.
In an alternative embodiment, the at least two intermediate refresh rates are two or more, and the frequency interval between any two adjacent intermediate refresh rates is the same, and the gamma determining module 240 is specifically configured to:
judging whether the minimum display parameter difference is less than or equal to a set threshold value or not;
if so, determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage;
if not, the frequency interval between adjacent intermediate refresh rates is narrowed to increase the number of intermediate refresh rates, and then the gamma adjustment module 210, the image display module 220, and the parameter calculation module 230 respectively execute corresponding actions until the reference gamma voltage is obtained.
In another possible implementation, the gamma adjustment module 210, the image display module 220, the parameter calculation module 230, and the gamma determination module 240 may also implement the following functions.
The gamma adjusting module 210 performs gamma adjustment on the display device based on an intermediate refresh rate between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to the intermediate refresh rate.
The image display module 220 drives the display device to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to the intermediate refresh rate, so as to obtain a first display image and a second display image.
The parameter calculation module 230 calculates a display parameter difference between the first display image and the second display image; wherein the display parameter difference comprises at least one of a luminance difference value and a color coordinate difference value.
When the display parameter difference is less than or equal to a set threshold, the gamma determining module 240 determines a gamma voltage corresponding to the intermediate refresh rate as a reference gamma voltage of the display device; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
When the display parameter difference is greater than the set threshold, the gamma determining module 240 changes the intermediate refresh rate, and then the gamma adjusting module 210, the image display module 220, and the parameter calculating module 230 respectively execute corresponding actions until the reference gamma voltage is obtained.
In an alternative embodiment, the gamma determining module 240 is specifically configured to:
and increasing or decreasing the intermediate refresh rate according to the set step size.
For detailed implementation of the gamma adjustment module 210, the image display module 220, the parameter calculation module 230 and the gamma determination module 240, reference may be made to the description of steps S31-S36 shown in fig. 2, and therefore, no further description is made here.
On the basis, please refer to fig. 5 in combination, which is a schematic diagram of a hardware structure of the computer device 300 where the display parameter determining apparatus 200 is located, wherein the computer device 300 includes a processor 310, and a memory 320 and a bus 330 connected to the processor 310. The processor 310 and the memory 320 communicate with each other via a bus 330. The gamma adjustment module 210, the image display module 220, the parameter calculation module 230, and the gamma determination module 240 may be stored in the memory 320 as program units, and the processor 310 executes the program units stored in the memory 320 to implement corresponding functions, thereby implementing the display parameter determination method.
Further, the processor 310 includes a kernel, and the kernel fetches the corresponding program unit from the memory 320. The kernel can be set to be one or more than one, and the kernel parameters are adjusted to ensure that the brightness of the display equipment does not have obvious difference when the display equipment is switched between the first refresh rate and the second refresh rate.
On the basis of the above, the embodiment of the present invention further provides a computer-readable storage medium, on which a program is stored, and the program, when executed by the processor 310, implements the above-described display parameter determination method.
In addition, the embodiment of the invention also provides a display device, and the display device has a first refresh rate and a second refresh rate. The display device operates at both the first refresh rate and the second refresh rate using the reference gamma voltage described above. In this way, it is ensured that no significant difference in brightness of the display device occurs when the display device is switched between the first refresh rate and the second refresh rate.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A display parameter determination method for determining display parameters for a display device having a first refresh rate and a second refresh rate, the method comprising:
performing gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to each intermediate refresh rate;
driving the display device to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to each intermediate refresh rate to obtain a first display image and a second display image;
calculating a display parameter difference value between the first display image and the second display image corresponding to each gamma voltage; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
determining a reference gamma voltage of the display equipment according to the display parameter difference; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
2. The method of claim 1, wherein determining the reference gamma voltage of the display device according to the display parameter difference comprises:
and determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage.
3. The method of claim 2, further comprising:
driving at least one other display device to display based on the first refresh rate and the second refresh rate respectively by using the reference gamma voltage to obtain a third display image and a fourth display image;
calculating a display parameter difference between the third display image and the fourth display image;
judging whether the error between the display parameter difference value between the third display image and the fourth display image and the minimum display parameter difference value is within a preset range or not;
and if the error is within the preset range, determining the reference gamma voltage as the reference gamma voltage of other display equipment.
4. The method according to claim 1, wherein the at least two intermediate refresh rates are two or more, and the frequency intervals between any two adjacent intermediate refresh rates are the same;
determining a reference gamma voltage of the display device according to the display parameter difference, including:
judging whether the minimum display parameter difference is less than or equal to a set threshold value or not;
if so, determining the gamma voltage corresponding to the minimum display parameter difference value as the reference gamma voltage;
if not, reducing the frequency interval between adjacent intermediate refresh rates to increase the number of the intermediate refresh rates, and returning to the step of performing gamma adjustment on the display device based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to each intermediate refresh rate.
5. A display parameter determination apparatus for determining display parameters for a display device having a first refresh rate and a second refresh rate, the apparatus comprising:
the gamma adjusting module is used for carrying out gamma adjustment on the display equipment based on at least two intermediate refresh rates between the first refresh rate and the second refresh rate to obtain gamma voltage corresponding to each intermediate refresh rate;
the image display module is used for driving the display equipment to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to each intermediate refresh rate to obtain a first display image and a second display image;
the parameter calculation module is used for calculating a display parameter difference value between the first display image and the second display image corresponding to each gamma voltage; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
the gamma determining module is used for determining a reference gamma voltage of the display equipment according to the display parameter difference; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
6. A display parameter determination method for determining display parameters for a display device having a first refresh rate and a second refresh rate, the method comprising:
performing gamma adjustment on the display device based on an intermediate refresh rate between the first refresh rate and the second refresh rate to obtain a gamma voltage corresponding to the intermediate refresh rate;
driving the display device to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to the intermediate refresh rate to obtain a first display image and a second display image;
calculating a display parameter difference between the first display image and the second display image; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
when the display parameter difference is smaller than or equal to a set threshold value, determining the gamma voltage corresponding to the intermediate refresh rate as a reference gamma voltage of the display equipment; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
7. The method of claim 6, further comprising:
when the display parameter difference is larger than the set threshold, changing the intermediate refresh rate;
and returning to the step of performing gamma adjustment on the display device based on the intermediate refresh rate between the first refresh rate and the second refresh rate to obtain the gamma voltage corresponding to the intermediate refresh rate.
8. The method of claim 7, wherein changing the intermediate refresh rate comprises:
and increasing or decreasing the intermediate refresh rate according to a set step size.
9. A display parameter determination apparatus for determining display parameters for a display device having a first refresh rate and a second refresh rate, the apparatus comprising:
the gamma adjusting module is used for carrying out gamma adjustment on the display equipment based on an intermediate refresh rate between the first refresh rate and the second refresh rate to obtain gamma voltage corresponding to the intermediate refresh rate;
the image display module is used for driving the display equipment to display based on the first refresh rate and the second refresh rate respectively through the gamma voltage corresponding to the intermediate refresh rate to obtain a first display image and a second display image;
a parameter calculation module for calculating a display parameter difference between the first display image and the second display image; wherein the display parameter difference comprises at least one of a luminance difference and a color coordinate difference;
the gamma determining module is used for determining the gamma voltage corresponding to the intermediate refresh rate as the reference gamma voltage of the display equipment when the display parameter difference is smaller than or equal to a set threshold value; wherein the reference gamma voltage is used by the display device when operating at either the first refresh rate or the second refresh rate.
10. A display device having a first refresh rate and a second refresh rate, wherein the display device operates at either the first refresh rate or the second refresh rate using a reference gamma voltage determined by the method of any of claims 1-4 and 6-9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112365839A (en) * | 2020-11-24 | 2021-02-12 | 昆山国显光电有限公司 | Gamma curve adjusting method and device and display device |
| CN112382246A (en) * | 2020-11-04 | 2021-02-19 | 深圳市华星光电半导体显示技术有限公司 | Driving method, time sequence controller and liquid crystal display |
| CN113504992A (en) * | 2021-07-21 | 2021-10-15 | 昆山国显光电有限公司 | Compensation data compression method, compensation device and compensation equipment of display panel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180122327A1 (en) * | 2016-10-31 | 2018-05-03 | Samsung Display Co., Ltd. | Display device capable of changing frame frequency and driving method thereof |
| CN109903725A (en) * | 2017-12-11 | 2019-06-18 | 三星显示有限公司 | The display equipment of brightness can be changed according to operating frequency |
| CN110310600A (en) * | 2019-08-16 | 2019-10-08 | 上海天马有机发光显示技术有限公司 | Driving method, display drive apparatus and the electronic equipment of display panel |
| CN110491351A (en) * | 2019-09-27 | 2019-11-22 | 京东方科技集团股份有限公司 | A kind of driving method of display panel, its driving device and display device |
| CN110660348A (en) * | 2018-06-28 | 2020-01-07 | 三星显示有限公司 | Display device capable of changing frame rate and driving method thereof |
| CN110751933A (en) * | 2019-12-04 | 2020-02-04 | 京东方科技集团股份有限公司 | Display method and device for refresh rate switching, computer equipment and medium |
-
2020
- 2020-04-24 CN CN202010334985.7A patent/CN111554218B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180122327A1 (en) * | 2016-10-31 | 2018-05-03 | Samsung Display Co., Ltd. | Display device capable of changing frame frequency and driving method thereof |
| CN109903725A (en) * | 2017-12-11 | 2019-06-18 | 三星显示有限公司 | The display equipment of brightness can be changed according to operating frequency |
| CN110660348A (en) * | 2018-06-28 | 2020-01-07 | 三星显示有限公司 | Display device capable of changing frame rate and driving method thereof |
| CN110310600A (en) * | 2019-08-16 | 2019-10-08 | 上海天马有机发光显示技术有限公司 | Driving method, display drive apparatus and the electronic equipment of display panel |
| CN110491351A (en) * | 2019-09-27 | 2019-11-22 | 京东方科技集团股份有限公司 | A kind of driving method of display panel, its driving device and display device |
| CN110751933A (en) * | 2019-12-04 | 2020-02-04 | 京东方科技集团股份有限公司 | Display method and device for refresh rate switching, computer equipment and medium |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382246A (en) * | 2020-11-04 | 2021-02-19 | 深圳市华星光电半导体显示技术有限公司 | Driving method, time sequence controller and liquid crystal display |
| CN112365839A (en) * | 2020-11-24 | 2021-02-12 | 昆山国显光电有限公司 | Gamma curve adjusting method and device and display device |
| CN112365839B (en) * | 2020-11-24 | 2022-04-12 | 昆山国显光电有限公司 | Gamma curve adjusting method and device and display device |
| WO2022110908A1 (en) * | 2020-11-24 | 2022-06-02 | 昆山国显光电有限公司 | Gamma curve adjustment method and adjustment device, and display device |
| US11935466B2 (en) * | 2020-11-24 | 2024-03-19 | Kunshan Go-Visionox Opto-Electronics Co., Ltd | Method for adjusting gamma curve, device for adjusting gamma curve, and display device |
| CN113504992A (en) * | 2021-07-21 | 2021-10-15 | 昆山国显光电有限公司 | Compensation data compression method, compensation device and compensation equipment of display panel |
| CN113504992B (en) * | 2021-07-21 | 2023-09-05 | 昆山国显光电有限公司 | Compensation data compression method, compensation method, device and equipment of display panel |
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|---|---|
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