CN110751933B - Display method and device for refresh rate switching, computer equipment and medium - Google Patents
Display method and device for refresh rate switching, computer equipment and medium Download PDFInfo
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The invention discloses a display method and a display device for refresh rate switching, computer equipment and a medium. One embodiment of the method comprises: acquiring a gray scale reference voltage of each gray scale; calculating the gray scale voltage variable quantity of each gray scale corresponding to different refresh rates; compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates; and when the refresh rate in the same gray scale is switched, the gray scale compensation voltage corresponding to the current refresh rate of the gray scale is used for display driving. The embodiment can accurately and efficiently control the display drive, can effectively eliminate the picture flicker phenomenon when the refresh rate in the same gray scale is switched, and further can improve the display effect and the user experience.
Description
Technical Field
The invention relates to the technical field of display. And more particularly, to a display method and apparatus for refresh rate switching, a computer device, and a medium.
Background
Currently, many display devices have a display frequency conversion function. For example, as TFT-LCD display devices have been developed toward games, many TFT-LCD display devices have supported a Freesync (display frequency conversion technology) function in order to solve the problem of katton tearing under a high refresh rate screen. However, in a state where the Freesyn function is turned on, for the same gray level (e.g., L128), the fast switching of the refresh rate may cause a gray level brightness change, and a picture flicker phenomenon occurs, and the flicker degree may seriously affect the display effect or the quality of the display device, thereby reducing the user experience. The main reasons for the flicker phenomenon of the picture when switching the refresh rate in the same gray scale are as follows: in order to synchronize the display refresh rate with the display card frame rate when the fresyn function is turned on, for a frame of picture, the charging time of each row of pixel capacitors corresponding to the low refresh rate needs to be consistent with the charging time of each row of pixel capacitors corresponding to the high refresh rate, for example, from any refresh rate of 48Hz to 144Hz, the Clock (CLK) period is consistent with the 144Hz refresh rate, so the charging time of each row of pixel capacitors is the same, and the remaining time is the vertical blank row (V-blanking zone) time. Because the charging time of the pixel capacitor of each row corresponding to the low refresh rate is the same as the charging time of the pixel capacitor of each row corresponding to the high refresh rate, the holding time of the pixel capacitor voltage is longer than the holding time of the pixel capacitor voltage in the vertical blank row time period in order to maintain the gray scale brightness, and the longer the holding time is, the more the electric leakage is, the gray scale voltage changes, thereby causing the gray scale brightness change.
Therefore, it is desirable to provide a new display method and apparatus, computer device, and medium for refresh rate switching.
Disclosure of Invention
The present invention is directed to a display method and apparatus for switching refresh rate, a computer device and a medium, so as to solve at least one of the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a display method for switching refresh rate in a first aspect, which comprises the following steps:
acquiring a gray scale reference voltage of each gray scale;
calculating the gray scale voltage variable quantity of each gray scale corresponding to different refresh rates;
compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates;
and when the refresh rate in the same gray scale is switched, the gray scale compensation voltage corresponding to the current refresh rate of the gray scale is used for display driving.
The display method for switching the refresh rate provided by the first aspect of the invention can accurately and efficiently control the display drive, can effectively eliminate the image flicker phenomenon when the refresh rate in the same gray scale is switched, and can further improve the display effect and the user experience. In addition, the display method for switching the refresh rate provided by the first aspect of the present invention has strong applicability, is applicable to various types of display devices, and is not limited by the lowest refresh rate and the highest refresh rate.
Optionally, the formula for calculating the gray scale voltage variation corresponding to each gray scale with different refresh rates is as follows:
wherein the content of the first and second substances,
indicating the refresh rate F corresponding to the nth gray scalexC represents a pixel capacitance value, k represents a leakage rate per unit time of the pixel capacitance, t represents a charging time of the pixel capacitance per row,
indicating the maximum refresh rate F corresponding to the nth gray levelMaxAnd a refresh rate FxVertical blank line difference between.
The selectable mode can accurately and efficiently calculate the gray scale voltage variable quantity corresponding to each gray scale and different refresh rates.
Alternatively, for the nth gray level,
wherein the content of the first and second substances,
and
respectively representing the maximum refresh rates F corresponding to the nth gray scaleMaxGray scale voltage measurement and minimum refresh rate FMinThe measured value of the gray-scale voltage of (b),
indicating the maximum refresh rate F corresponding to the nth gray levelMaxWith a minimum refresh rate FMinVertical blank line difference between.
The optional mode skillfully solves the problem that the pixel capacitance value and the unit time leakage rate of the pixel capacitance are difficult to measure through an equivalent conversion mode, and ensures the high efficiency of calculation on the basis of ensuring the calculation accuracy.
Optionally, the maximum refresh rate F corresponding to the nth gray scaleMaxAnd a refresh rate FxVertical blank line difference value between
The calculation formula of (2) is as follows:
wherein the content of the first and second substances,
indicating the maximum refresh rate F corresponding to the nth gray levelMaxThe number of rows of (c).
This alternative may further increase the efficiency of the computation.
Optionally, the obtaining the gray scale reference voltage corresponding to each gray scale further includes: and obtaining the gray scale voltage of the maximum refresh rate corresponding to each gray scale according to the binding voltage of the gamma curve, and using the gray scale voltage as the gray scale reference voltage corresponding to each gray scale.
The selectable mode can accurately obtain the gray scale reference voltage corresponding to each gray scale, thereby ensuring that the display driving can be accurately and efficiently controlled finally.
Optionally, after the gray scale reference voltage corresponding to the gray scale is compensated according to the gray scale voltage variation corresponding to each gray scale with different refresh rates to obtain the gray scale compensation voltage corresponding to each gray scale with different refresh rates, the method further includes: establishing and storing an LUT table containing gray scale compensation voltages of different refresh rates corresponding to each gray scale;
the driving of the display by using the gray scale compensation voltage of the current refresh rate corresponding to the gray scale further comprises: and looking up the LUT table according to the current refresh rate in the gray scale, and performing display driving by using the gray scale compensation voltage of the gray scale corresponding to the current refresh rate obtained by looking up the table.
The optional mode can quickly and accurately search the gray scale compensation voltage corresponding to the current refresh rate of the gray scale when the refresh rate in the same gray scale is switched through the pre-established LUT table, thereby improving the efficiency of display driving.
Optionally, the refresh rate switching further comprises: refresh rate switching is performed with freessync.
A second aspect of the invention provides a display device for performing refresh rate switching of the method provided by the first aspect of the invention, comprising:
the acquisition module is used for acquiring the gray scale reference voltage of each gray scale;
the calculation module is used for calculating gray scale voltage variable quantity of each gray scale corresponding to different refresh rates;
the compensation module is used for compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates;
and the driving module is used for performing display driving by utilizing the gray scale compensation voltage of the gray scale corresponding to the current refresh rate when the refresh rate in the same gray scale is switched.
A third aspect of the invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method provided by the first aspect of the invention when executing the program.
A fourth aspect of the invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the method provided by the first aspect of the invention.
The invention has the following beneficial effects:
the technical scheme of the invention can accurately and efficiently control the display drive, can effectively eliminate the picture flicker phenomenon when the refresh rate in the same gray scale is switched, and further can improve the display effect and the user experience. In addition, the technical scheme of the invention has strong applicability, can be suitable for various types of display equipment and is not limited by the lowest refresh rate and the highest refresh rate.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings;
fig. 1 is a flowchart illustrating a display method for switching a refresh rate according to an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a gamma curve.
Fig. 3 is a schematic diagram of a display device with a switchable refresh rate according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a display device with a switchable refresh rate according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, an embodiment of the present invention provides a display method for switching a refresh rate, including the following steps:
s1, obtaining the gray scale reference voltage of each gray scale, wherein,
in some optional implementations of this embodiment, step S1 further includes: a gray scale voltage corresponding to a maximum refresh rate of each gray scale is obtained according to a binding voltage of a Gamma (Gamma) curve as a gray scale reference voltage corresponding to each gray scale, wherein the Gamma curve is shown in fig. 2. The implementation method can accurately obtain the gray scale reference voltage corresponding to each gray scale. It should be noted that, in theory, the gray scale voltages of the same gray scale at different refresh rates are the same.
In a specific example, after obtaining the gray scale reference voltage corresponding to each gray scale, a gray scale voltage reference table is established according to the gray scale reference voltage corresponding to each gray scale, so that the subsequent process calls the gray scale reference voltage corresponding to each gray scale, taking the maximum refresh rate as 144Hz, and the gray scales include G0 to G255 as an example, the gray scale voltage reference table is shown in table 1:
TABLE 1
| V+ | V- | Luminance (Light) | |
| G0 | V0+ | V0- | L0 |
| G1 | V1+ | V1- | L1 |
| …… | ...… | ...… | ...… |
| G255 | V255+ | V255- | L255 |
S2, calculating gray scale voltage variation of each gray scale corresponding to different refresh rates,
in some optional implementations of this embodiment, the formula for calculating the gray scale voltage variation corresponding to each gray scale with different refresh rates is as follows:
wherein the content of the first and second substances,
indicating the refresh rate F corresponding to the nth gray scalexC represents a pixel capacitance value, k represents a leakage rate per unit time of the pixel capacitance, t represents a charging time of the pixel capacitance per row,
indicating the maximum refresh rate F corresponding to the nth gray levelMaxAnd a refresh rate FxThe vertical blank line (V-blanking zone) difference between them.
The implementation method can accurately and efficiently calculate the gray scale voltage variable quantity of each gray scale corresponding to different refresh rates.
In some alternative implementations of this embodiment, for the nth gray level,
wherein the content of the first and second substances,
and
respectively representing the maximum refresh rates F corresponding to the nth gray scaleMaxThe gray scale voltage measurement (which is understood to be measured after the voltage change of the pixel capacitor due to leakage at the hold time) and the minimum refresh rate FMinThe gray scale voltage measurement (as can be understood, the gray scale voltage measurement is measured after the voltage change occurs due to the leakage of the pixel capacitor during the hold time), wherein,
and
respectively at a maximum refresh rate FMaxAnd a minimum refresh rate FMinThe actual brightness value of the lower measurement is obtained by referring to a reference gamma curve;
indicating the maximum refresh rate F corresponding to the nth gray levelMaxWith a minimum refresh rate FMinVertical blank line difference between.
The realization mode skillfully solves the problem that the pixel capacitance value and the unit time leakage rate of the pixel capacitance are difficult to measure through an equivalent conversion mode, and ensures the high efficiency of calculation on the basis of ensuring the calculation accuracy.
In some optional implementations of this embodiment, the maximum refresh rate F corresponding to the nth gray scaleMaxAnd a refresh rate FxVertical blank line difference value between
The calculation formula of (2) is as follows:
wherein the content of the first and second substances,
indicating the maximum refresh rate F corresponding to the nth gray levelMaxThe number of rows of (c).
The implementation method can further improve the efficiency of calculating the gray scale voltage variation of each gray scale corresponding to different refresh rates.
In one specific example, the process of calculating the nth gray level is as follows:
taking the maximum refresh rate of 144Hz and the minimum refresh rate of 48Hz as an example, on the basis that the charging time of each row of pixel capacitors in a frame of picture is the same, i.e. the effective charge quantity Q of each pixel capacitor is the same, and the leakage rate k per unit time is the same, the minimum refresh rate of 48Hz maintains the longest retention time of the gray scale voltage, the leakage quantity is the largest, and the gray scale voltage variation Δ U is the largest, under the condition that the same gray scale is at different refresh rates. Therefore, the nth gray scale can be determined at each refresh rate F based on the minimum refresh rate of 48HzxVoltage variation of
Where Δ Q identifies the amount of charge change.
Further, in the present invention,
wherein, for the nth gray scale,
Anthe voltage change rate of the pixel capacitance per line in the vertical blanking line (V-blanking region) time representing the nth gray scale, it can be understood that the vertical blanking line (V-blanking region) time, i.e., the hold time,
and
respectively representing the maximum refresh rates F corresponding to the nth gray scaleMax(144Hz) Gray scale voltage measurement and minimum refresh rate FMin(48Hz), wherein,
is determined by referring to the maximum refresh rate F with its corresponding brightnessMaxA gamma curve of (144 Hz). Since the charging time of the pixel capacitors of each row in a frame of 48Hz and 144Hz is the same, namely the charging time sequence is the same, only the charging time sequence exists
And the brightness variation is the largest, so A calculated by this formulanAnd is more accurate.
Referring to the example of calculating the nth gray level described above, A for calculating other gray levels can be calculatednFurther, the other gray scales can be calculated and obtained at each refresh rate FxVoltage variation of
(it should be noted that, since the gray scale reference voltages of different gray scales are different, the effective charge amount Q of the pixel capacitor of different gray scales is different), the finally obtained gray scale voltage variation corresponding to different refresh rates for each gray scale is shown in table 2:
TABLE 2
In summary, in step S2, based on the characteristics that the effective charge amount of each pixel capacitor in a frame is the same and the leakage rate per unit time is the same under different refresh rates with the same gray scale, the gray scale voltage variation corresponding to different refresh rates with each gray scale can be accurately and efficiently calculated.
S3, compensating the gray scale reference voltage corresponding to the gray scale according to the gray scale voltage variation corresponding to different refresh rate of each gray scale to obtain the gray scale compensation voltage corresponding to different refresh rate of each gray scale, wherein,
in some optional implementation manners of this embodiment, after compensating the gray scale reference voltage corresponding to the gray scale according to the gray scale voltage variation corresponding to each gray scale with different refresh rates to obtain the gray scale compensation voltage corresponding to each gray scale with different refresh rates, the method further includes: and establishing and storing an LUT table containing gray scale compensation voltages corresponding to different refresh rates for each gray scale. The implementation mode can improve the efficiency of subsequent display driving, and in addition, the implementation mode can realize the establishment of corresponding LUT tables for different display devices, so that the applicability of the method provided by the embodiment can be further improved.
In one specific example, the LUT table is shown in table 3:
TABLE 3
S4, when the refresh rate in the same gray scale is switched, the gray scale compensation voltage corresponding to the current refresh rate is used to drive the display, wherein,
in some optional implementations of this embodiment, the performing display driving by using the gray scale compensation voltage corresponding to the current refresh rate further includes: and looking up the LUT table according to the current refresh rate in the gray scale, and performing display driving by using the gray scale compensation voltage of the gray scale corresponding to the current refresh rate obtained by looking up the table. For example, the refresh rate F is performed at gray level G1MaxTo a refresh rate FMinWhen switching, look up the LUT table shown in Table 3 to obtain the refresh rate FMinGray scale compensation voltage of
By using
Display driving is performed.
In this implementation manner, the LUT table pre-established in step S3 may be used to quickly and accurately find the gray scale compensation voltage corresponding to the current refresh rate when switching the refresh rate within the same gray scale, so as to improve the efficiency of display driving. It is understood that the steps S1-S3 can be divided into LUT table establishing stages, the LUT table established in the LUT table establishing stage can be stored in the display device executing the step S4, and the display device can directly perform table lookup on the stored LUT table to obtain the corresponding gray-scale compensation voltage for display driving when the refresh rate in the same gray scale is switched.
In some optional implementations of this embodiment, the refresh rate switching further includes: refresh rate switching is performed with freessync. That is, step S4 is: when the refresh rate is switched by using FreeSesync in the same gray scale, the display driving is performed by using the gray scale compensation voltage of the gray scale corresponding to the current refresh rate. In this alternative, steps S1-S4 are all executed in the state that the freessync mode is turned on, for example, step S1 further includes: acquiring a gray scale reference voltage of each gray scale in a FreeSesync mode; step S2 further includes: calculating gray scale voltage variable quantity of each gray scale corresponding to different refresh rates in a FreeSesync mode; in step S2
And
respectively representing the maximum refresh rate F corresponding to the nth gray scale in FreeSesync modeMaxThe gray scale voltage measurement (which is understood to be measured after the voltage change of the pixel capacitor due to leakage at the hold time) and the minimum refresh rate FMinThe gray scale voltage measurements of (a).
To sum up, the display method for switching refresh rates provided by this embodiment can accurately and efficiently calculate the gray scale voltage variation corresponding to different refresh rates of each gray scale based on the characteristics that the effective charge amount of each pixel capacitor in a frame is the same and the leakage rate per unit time is the same at different refresh rates for the same gray scale, so as to accurately and efficiently control the display driving, effectively eliminate the image flicker phenomenon occurring when the refresh rates in the same gray scale are switched, and further improve the display effect and the user experience. In addition, the display method for switching the refresh rate provided by the embodiment has strong applicability, can be applied to various types of display devices, and is not limited by the lowest refresh rate and the highest refresh rate.
As shown in fig. 3, another embodiment of the present invention provides a display device performing refresh rate switching of the above method, including:
the acquisition module is used for acquiring the gray scale reference voltage of each gray scale;
the calculation module is used for calculating gray scale voltage variable quantity of each gray scale corresponding to different refresh rates;
the compensation module is used for compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates;
and the driving module is used for performing display driving by utilizing the gray scale compensation voltage of the gray scale corresponding to the current refresh rate when the refresh rate in the same gray scale is switched.
The obtaining module, the calculating module, the compensating module, and the driving module may be implemented by a processor or a chip, that is, each module is a functional module executed by the processor or the chip, and may be described as: a processor includes an acquisition module, a calculation module, a compensation module, and a drive module. Wherein the names of the modules do not in some cases constitute a limitation of the module itself. For example, the compensation module may also be described as a "gray scale voltage adjustment module".
It should be noted that the principle and the working flow of the apparatus provided in this embodiment are similar to those of the above method, and reference may be made to the above description for relevant points, which are not described herein again.
As shown in fig. 4, a computer system suitable for a display device used to implement refresh rate switching provided by the present embodiment includes a central processing module (CPU) that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) or a program loaded from a storage section into a Random Access Memory (RAM). In the RAM, various programs and data necessary for the operation of the computer system are also stored. The CPU, ROM, and RAM are connected thereto via a bus. An input/output (I/O) interface is also connected to the bus.
An input section including a keyboard, a mouse, and the like; an output section including a speaker and the like such as a Liquid Crystal Display (LCD); a storage section including a hard disk and the like; and a communication section including a network interface card such as a LAN card, a modem, or the like. The communication section performs communication processing via a network such as the internet. The drive is also connected to the I/O interface as needed. A removable medium such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive as necessary, so that a computer program read out therefrom is mounted into the storage section as necessary.
In particular, the processes described in the above flowcharts may be implemented as computer software programs according to the present embodiment. For example, the present embodiments include a computer program product comprising a computer program tangibly embodied on a computer-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication section, and/or installed from a removable medium.
The flowchart and schematic diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to the present embodiments. In this regard, each block in the flowchart or schematic diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the schematic and/or flowchart illustration, and combinations of blocks in the schematic and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The modules described in the present embodiment may be implemented by software or hardware. The described modules may also be provided in a processor, which may be described as: a processor includes an acquisition module, a calculation module, a compensation module, and a drive module. Wherein the names of the modules do not in some cases constitute a limitation of the module itself. For example, the compensation module may also be described as a "gray scale voltage adjustment module".
On the other hand, the present embodiment also provides a nonvolatile computer storage medium, which may be the nonvolatile computer storage medium included in the apparatus in the foregoing embodiment, or may be a nonvolatile computer storage medium that exists separately and is not assembled into a terminal. The non-volatile computer storage medium stores one or more programs that, when executed by a device, cause the device to: calculating the gray scale voltage variable quantity of each gray scale corresponding to different refresh rates; compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates; and when the refresh rate in the same gray scale is switched, the gray scale compensation voltage corresponding to the current refresh rate of the gray scale is used for display driving.
It should be noted that in the description of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations and modifications can be made on the basis of the above description, and all embodiments cannot be exhaustive, and all obvious variations and modifications belonging to the technical scheme of the present invention are within the protection scope of the present invention.
Claims (9)
1. A display method for refresh rate switching, comprising:
acquiring a gray scale reference voltage of each gray scale;
calculating the gray scale voltage variable quantity of each gray scale corresponding to different refresh rates;
compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates;
when the refresh rate in the same gray scale is switched, the gray scale compensation voltage corresponding to the current refresh rate of the gray scale is used for display driving;
the formula for calculating the gray scale voltage variation of each gray scale corresponding to different refresh rates is as follows:
wherein the content of the first and second substances,
indicating the refresh rate F corresponding to the nth gray scalexC represents a pixel capacitance value, k represents a leakage rate per unit time of the pixel capacitance, t represents a charging time of the pixel capacitance per row,
representing the nth gray scaleCorresponding maximum refresh rate FMaxAnd a refresh rate FxVertical blank line difference between.
2. The method of claim 1, wherein for the nth gray level,
wherein the content of the first and second substances,
and
respectively representing the maximum refresh rates F corresponding to the nth gray scaleMaxGray scale voltage measurement and minimum refresh rate FMinThe measured value of the gray-scale voltage of (b),
indicating the maximum refresh rate F corresponding to the nth gray levelMaxWith a minimum refresh rate FMinVertical blank line difference between.
3. The method of claim 1, wherein the nth gray level corresponds to a maximum refresh rate FMaxAnd a refresh rate FxVertical blank line difference value between
The calculation formula of (2) is as follows:
wherein the content of the first and second substances,
indicating the maximum refresh rate F corresponding to the nth gray levelMaxThe number of rows of (c).
4. The method of claim 1, wherein obtaining the gray level reference voltage for each gray level further comprises: and obtaining the gray scale voltage of the maximum refresh rate corresponding to each gray scale according to the binding voltage of the gamma curve, and using the gray scale voltage as the gray scale reference voltage corresponding to each gray scale.
5. The method of claim 1, wherein after the gray scale reference voltage corresponding to the gray scale is compensated according to the gray scale voltage variation corresponding to each gray scale with different refresh rate to obtain the gray scale compensation voltage corresponding to each gray scale with different refresh rate, the method further comprises: establishing and storing an LUT table containing gray scale compensation voltages of different refresh rates corresponding to each gray scale;
the driving of the display by using the gray scale compensation voltage of the current refresh rate corresponding to the gray scale further comprises: and looking up the LUT table according to the current refresh rate in the gray scale, and performing display driving by using the gray scale compensation voltage of the gray scale corresponding to the current refresh rate obtained by looking up the table.
6. The method of claim 1, wherein the refresh rate switching further comprises: refresh rate switching is performed with freessync.
7. A display device that performs refresh rate switching according to the method of any of claims 1-6, comprising:
the acquisition module is used for acquiring the gray scale reference voltage of each gray scale;
the calculation module is used for calculating gray scale voltage variable quantity of each gray scale corresponding to different refresh rates;
the compensation module is used for compensating the gray scale reference voltage of the corresponding gray scale according to the gray scale voltage variation of each gray scale corresponding to different refresh rates to obtain the gray scale compensation voltage of each gray scale corresponding to different refresh rates;
and the driving module is used for performing display driving by utilizing the gray scale compensation voltage of the gray scale corresponding to the current refresh rate when the refresh rate in the same gray scale is switched.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1-6 when executing the program.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-6.
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| CN111445839B (en) * | 2020-04-17 | 2021-12-14 | 广州视源电子科技股份有限公司 | Driving method, device, system, equipment and storage medium of LED display screen |
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