CN111292668A - Method and device for adjusting refresh frequency of display panel - Google Patents
Method and device for adjusting refresh frequency of display panel Download PDFInfo
- Publication number
- CN111292668A CN111292668A CN202010235368.1A CN202010235368A CN111292668A CN 111292668 A CN111292668 A CN 111292668A CN 202010235368 A CN202010235368 A CN 202010235368A CN 111292668 A CN111292668 A CN 111292668A
- Authority
- CN
- China
- Prior art keywords
- clock signal
- pixel clock
- frequency
- display panel
- video source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
Abstract
The application provides a method for adjusting the refresh frequency of a display panel, which comprises the following steps: the front-end video source judges whether the frame rate of a video source signal sent to the time sequence controller by the front-end video source is greater than a preset threshold value; if the frame rate is greater than the preset threshold, the front-end video source switches the current pixel clock signal from a first pixel clock signal to a second pixel clock signal so as to improve the refresh frequency of the display panel; wherein a frequency of the second pixel clock signal is greater than a frequency of the first pixel clock signal. According to the video source refresh method and device, the frequency of the pixel clock signal is improved through the front-end video source, so that the refresh frequency of the display panel is improved, the possibility that the refresh frequency of the display panel is smaller than the frame rate of the received video source signal is greatly reduced, and the problem that the display image of the display panel is abnormal is solved to a great extent. The application also provides a refresh frequency adjusting device of the display panel.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a method and an apparatus for adjusting a refresh frequency of a display panel.
Background
The frame rate refers to the number of frames rendered by a video per second, the refresh rate refers to the number of times that a display refreshes frames per second, and for a display, if the refresh rate of the display is lower than the frame rate of the video played by the display, it may cause an abnormal display frame.
With the development of video technology, more and more videos with high frame rates appear, and a display inevitably plays videos with frame rates higher than the refresh rate of the display, so that abnormal display images sometimes occur.
Disclosure of Invention
Therefore, it is necessary to provide a method and an apparatus for adjusting the refresh frequency of a display panel to solve the problem of abnormal display screen of a display.
In a first aspect, an embodiment of the present application provides a method for adjusting a refresh frequency of a display panel, where the method for adjusting the refresh frequency of the display panel includes the following steps:
the front-end video source judges whether the frame rate of a video source signal sent to the time sequence controller by the front-end video source is greater than a preset threshold value;
if the frame rate is greater than the preset threshold, the front-end video source switches the current pixel clock signal from a first pixel clock signal to a second pixel clock signal so as to improve the refresh frequency of the display panel; wherein a frequency of the second pixel clock signal is greater than a frequency of the first pixel clock signal.
In some embodiments, after the step "if the frame rate is greater than the preset threshold, the front-end video source switches the current pixel clock signal from the first pixel clock signal to the second pixel clock signal to increase the refresh frequency of the display panel", the method for adjusting the refresh frequency of the display panel further includes the following steps:
the front-end video source increases the total time the display panel scans in the vertical direction.
In some embodiments, after the step "the front-end video source increases the total time of scanning of the display panel in the vertical direction", the method for adjusting the refresh frequency of the display panel further includes the steps of:
the front-end video source sends the video source signal to the time sequence controller;
the time sequence controller decompresses the received video source signals to obtain the pixel clock signals;
the time schedule controller judges whether the pixel clock signal is the second pixel clock signal;
and if the pixel clock signal is the second pixel clock signal, the time schedule controller updates the value of a register in the time schedule controller.
In some embodiments, the step of determining whether the pixel clock signal is the second pixel clock signal by the timing controller includes the steps of:
the time schedule controller detects the frequency of the pixel clock signal;
the time schedule controller judges whether the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal;
and if the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal, the time schedule controller judges the pixel clock signal as the second pixel clock signal.
In some embodiments, the step of detecting the frequency of the pixel clock signal by the timing controller includes the steps of:
the time schedule controller generates a plurality of sampling clock signals which are phase-shifted in sequence and have the same frequency;
the time schedule controller collects the high level of the pixel clock signal through a plurality of sampling clock signals and acquires the number of the sampling clock signals collected to the high level;
the time schedule controller calculates the high-level time length of the pixel clock signal according to the number and a preset time length calculation formula;
and the time schedule controller calculates the frequency of the pixel clock signal according to the duration and a preset frequency calculation formula.
In some embodiments, the duration calculation formula is:
T＝t×n
wherein T is a duration of a high level of the pixel clock signal, T is a time interval between two adjacent sampling clock signals, and n is a number of the sampling clock signals which acquire the high level.
In some embodiments, the frequency calculation formula is:
Pixel_Clock_Frequency＝1/(2×T)
wherein, Pixel _ Clock _ Frequency is the Frequency of the Pixel Clock signal, and T is the duration of the high level of the Pixel Clock signal.
In a second aspect, an embodiment of the present application provides a refresh frequency adjustment apparatus for a display panel, including:
the first judging module and the switching module are arranged in the front-end video source; wherein the content of the first and second substances,
the first judging module is used for judging whether the frame rate of a video source signal sent by the front-end video source to the time sequence controller is greater than a preset threshold value or not;
if the refresh frequency of the display panel is greater than the preset threshold, the switching module switches the current pixel clock signal from a first pixel clock signal to a second pixel clock signal so as to improve the refresh frequency of the display panel; wherein a frequency of the second pixel clock signal is greater than a frequency of the first pixel clock signal.
In some embodiments, the refresh frequency adjusting apparatus of the display panel further includes:
the adjusting module is arranged in the front-end video source;
the adjusting module is used for increasing the total time of scanning the display panel along the vertical direction.
In some embodiments, the refresh frequency adjusting apparatus of the display panel further includes:
the system comprises a sending module arranged in the front-end video source, and a decompression module, a second judgment module and an updating module which are arranged in the time sequence controller; wherein the content of the first and second substances,
the sending module is used for sending the video source signal to the decompression module;
the decompression module is used for decompressing the received video source signal to obtain the pixel clock signal;
the second judging module is configured to judge whether the pixel clock signal is the second pixel clock signal;
and if the pixel clock signal is the second pixel clock signal, the updating module updates the value of the register in the time schedule controller.
According to the method and the device for adjusting the refresh frequency of the display panel, the frequency of the pixel clock signal is improved through the front-end video source, so that the refresh frequency of the display panel is improved, the possibility that the refresh frequency of the display panel is smaller than the frame rate of the received video source signal is greatly reduced, and the problem that the display picture of the display panel is abnormal is solved to a great extent.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an application scenario diagram of a refresh frequency adjustment method for a display panel according to an embodiment of the present application;
FIG. 2 is a flowchart illustrating a refresh frequency adjustment method of the display panel shown in FIG. 1;
FIG. 3 is a timing diagram of video transmission by the display panel shown in FIG. 1;
fig. 4 is a waveform diagram of a sampling clock signal provided by an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
To better explain the embodiments of the present application, an application scenario of the refresh frequency adjustment method for a display panel will be explained first. Fig. 1 is an application scenario diagram of a method for adjusting a refresh frequency of a display panel according to an embodiment of the present disclosure, as shown in fig. 1, the application scenario includes a display panel 10, a timing controller 20 electrically connected to the display panel 10, and a front-end video source 30 electrically connected to the timing controller 20.
The front-end video source 30 is configured to send video source signals to the timing controller 20, and the video source signals include three types of signals, namely RGB data signals, pixel clock signals, and control signals.
After receiving the video source signal, the timing controller 20 processes the video source signal, converts the video source signal into a Low-Voltage Differential Signaling (LVDS) capable of driving the display panel 10, and drives the display panel 10 to display an image through the LVDS.
Fig. 2 is a flowchart of a refresh frequency adjustment method of the display panel shown in fig. 1, as shown in fig. 2, the method includes the following steps:
in step 201, the front-end video source 30 determines whether the frame rate of the video source signal sent to the timing controller 20 is greater than a preset threshold.
In this embodiment, the front-end video source 30 detects the frame rate of the video source signal sent to the timing controller 20 in real time, compares the frame rate with a preset threshold, and if the frame rate obtained by the comparison is greater than the preset threshold, the front-end video source 30 switches the current pixel clock signal from the first pixel clock signal to the second pixel clock signal, where the frequency of the second pixel clock signal is greater than that of the first pixel clock signal, and the switching of the pixel clock signals can be implemented by adjusting the phase-locked loop.
It should be noted that the preset threshold may be set according to actual situations, for example, the preset threshold may be set as: in the case that the display screen of the display panel 10 is ensured to be normal and the pixel clock signal of the front-end video source 30 is the first pixel clock signal, the front-end video source 30 sends the maximum frame rate of the video source signal to the timing controller 20. Of course, the preset threshold may also be set to other values smaller than the maximum frame rate, and the value thereof is not specifically limited here.
It is understood that, in the case that the pixel clock signal of the front-end video source 30 is the first pixel clock signal, if the front-end video source 30 sends a video source signal with a frame rate greater than the preset threshold to the timing controller 20, the display panel 10 may display an abnormal picture, and the reason for this is that the refresh frequency of the display panel 10 is less than the frame rate of the video source signal received by the display panel 10.
The following formula is a calculation formula of the refresh frequency of the display panel 10:
Frame_Rate＝Pixel_Clock_Frequency/(H_total×V_total)；
wherein, Frame _ Rate is a refresh Frequency of the display panel 10, Pixel _ Clock _ Frequency is a Frequency of the Pixel Clock signal, H _ total is a total time of the display panel 10 scanning along the horizontal direction, and V _ total is a total time of the display panel 10 scanning along the vertical direction.
As can be seen from the above formula, under the condition that the total time of the display panel 10 scanning along the horizontal direction and the total time of the display panel 10 scanning along the vertical direction are not changed, since the front-end video source 30 increases the frequency of the pixel clock signal, the refresh frequency of the display panel 10 is increased, so that the possibility that the refresh frequency of the display panel 10 is less than the frame rate of the video source signal received by the display panel 10 is greatly reduced, and the problem of abnormal display picture of the display panel 10 is solved to a great extent.
Based on any of the above embodiments, after "if the frame rate is greater than the preset threshold, the front-end video source 30 switches the current pixel clock signal from the first pixel clock signal to the second pixel clock signal to increase the refresh frequency of the display panel 10", the method for adjusting the refresh frequency of the display panel 10 further includes the following steps:
the front-end video source 30 increases the total time the display panel 10 is scanned in the vertical direction.
Specifically, this embodiment will be described with reference to fig. 3. Fig. 3 is a timing chart of video transmission performed by the display panel shown in fig. 1, wherein during the display of the video picture on the display panel 10, the video picture is formed by displaying one frame by one frame of image on the display panel 10 in a switching manner. As shown in fig. 3, the frame period of the display panel 10 includes a Vertical active Video (Vertical Video) area and a Vertical Blanking (Vertical Blanking) area. The field video effective area is the scanning time from the beginning of scanning one frame of image by the electron gun to the end of scanning the frame of image, and the field blanking area is the preparation time from the end of scanning one frame of image by the electron gun to the beginning of scanning the next frame of image.
The Vertical Front Porch (VFP), the Vertical synchronization (VSync) area, and the Vertical Back Porch (VBP) area. The field synchronization area is the duration of a field synchronization signal, and the field synchronization signal is used for controlling the electronic gun to scan the next frame of image; the field front shoulder is the time from the scanning of the electron gun to the start of the field synchronizing signal of a frame of image; the field back shoulder is the time between the end of the field sync signal and the beginning of the electron gun scanning the next frame of image.
In the present embodiment, the total time of scanning of the display panel 10 in the vertical direction is the sum of the scanning times of the field video active area and the field blanking area. By increasing the total time that the display panel 10 scans in the vertical direction after the front-end video source 30 switches the current pixel clock signal from the first pixel clock signal to the second pixel clock signal, the detectability of the time interval between adjacent frame images of the video frame can be increased.
Based on any of the above embodiments, after the step "the front-end video source 30 increases the total time of scanning of the display panel 10 in the vertical direction", the method for adjusting the refresh frequency of the display panel 10 further includes the following steps:
the front-end video source 30 transmits the video source signal to the timing controller 20.
The timing controller 20 decompresses the pixel clock signal from the received video source signal.
The timing controller 20 determines whether the pixel clock signal is the second pixel clock signal.
If the pixel clock signal is the second pixel clock signal, the timing controller 20 updates the value of the register inside itself.
Specifically, after the front-end video source 30 switches the first pixel clock signal to the second pixel clock signal, the front-end video source 30 continues to transmit the video source signal to the timing controller 20. After the timing controller 20 receives the video source signal sent by the front-end video source 30, the video source signal is decompressed to obtain a pixel clock signal. After the timing controller 20 obtains the pixel clock signal, the frequency of the pixel clock signal is compared with the frequency of the second pixel clock signal to determine whether the pixel clock signal is the second pixel clock signal, and if so, the timing controller 20 updates the value of the register inside itself.
It should be noted that, when the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal, the pixel clock signal is determined to be the second pixel clock signal.
The registers updated by the timing controller 20 are registers corresponding to a Gate Driver on Array (GOA) circuit parameter, a charging parameter, an Over Drive (OD) parameter, a white balance parameter, and the like, and values in the registers are updated to reduce the occurrence of the flicker phenomenon of the display screen of the display panel 10. The value for updating the register is set according to actual conditions, and is not specifically limited here.
Based on any of the above embodiments, the step of determining whether the pixel clock signal is the second pixel clock signal by the timing controller 20 includes the following steps:
the timing controller 20 detects the frequency of the pixel clock signal.
The timing controller 20 determines whether the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal.
If the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal, the timing controller 20 determines that the pixel clock signal is the second pixel clock signal.
Based on any of the above embodiments, the step of detecting the frequency of the pixel clock signal by the timing controller 20 includes the following steps:
the timing controller 20 generates a plurality of sampling clock signals that are sequentially phase-shifted and have the same frequency.
The timing controller 20 collects the high level of the pixel clock signal through the plurality of sampling clock signals, and acquires the number of the sampling clock signals collected to the high level.
The timing controller 20 calculates the duration of the high level of the pixel clock signal according to the number and a preset duration calculation formula.
The timing controller 20 calculates the frequency of the pixel clock signal according to the duration and a preset frequency calculation formula.
Based on any of the above embodiments, the time length calculation formula is:
T＝t×n
wherein T is a duration of a high level of the pixel clock signal, T is a time interval between two adjacent sampling clock signals, and n is a number of the sampling clock signals which acquire the high level.
Based on any of the above embodiments, the frequency calculation formula is:
Pixel_Clock_Frequency＝1/(2×T)
wherein, Pixel _ Clock _ Frequency is the Frequency of the Pixel Clock signal, and T is the duration of the high level of the Pixel Clock signal.
Specifically, the process of detecting the frequency of the pixel clock signal by the timing controller 20 is described with reference to fig. 4. Fig. 4 is a waveform diagram of sampling clock signals provided by an embodiment of the present application, as shown in fig. 4, five sampling clock signals which are sequentially phase-shifted and have the same frequency are CCLK1, CCLK2, CCLK3, CCLK4, and CCLK5, respectively, where a time interval between two adjacent sampling clock signals is t, as can be seen from fig. 4, the sampling clock signals CCLK1, CCLK2, CCLK3, and CCLK4 collect the high level of the pixel clock signal PCLK, that is, the number of sampling clock signals which collect the high level of the pixel clock signal PCLK is four, so the duration of the high level of the pixel clock signal PCLK is 4t, and the duty ratios of the pixel clock signals PCLK in the display panel 10 are all 50%, so the frequency of the pixel clock signal PCLK is 1/(8 t). It is understood that, in order to reduce the error of the detected frequency of the pixel clock signal PCLK, more sampling clock signals should be provided and the time interval between adjacent sampling clock signals should be reduced as hardware allows.
Based on any one of the above embodiments, an embodiment of the present application further provides an apparatus for adjusting a refresh frequency of a display panel 10, including:
the first judging module and the switching module are arranged in the front-end video source 30; the first determining module is configured to determine whether a frame rate of a video source signal sent by the front-end video source 30 to the timing controller 20 is greater than a preset threshold; if the frame rate is greater than the preset threshold, the switching module switches the current pixel clock signal from a first pixel clock signal to a second pixel clock signal to increase the refresh frequency of the display panel 10; wherein a frequency of the second pixel clock signal is greater than a frequency of the first pixel clock signal.
It should be noted that, the refresh frequency adjustment apparatus of the display panel 10 in this embodiment specifically executes the steps in the above embodiment of the refresh frequency adjustment method of each display panel 10, and details thereof are not repeated here.
The refresh frequency adjusting device of the display panel 10 provided by the application improves the frequency of the pixel clock signal through the front-end video source 30, so that the refresh frequency of the display panel 10 is improved, thereby greatly reducing the possibility that the refresh frequency of the display panel 10 is less than the frame rate of the video source signal received by the display panel 10, and solving the problem of abnormal display picture of the display panel 10 to a great extent.
Based on any of the above embodiments, the refresh frequency adjusting apparatus of the display panel 10 further includes:
an adjustment module disposed in the front-end video source 30; the adjusting module is configured to increase the total time of scanning the display panel 10 in the vertical direction.
Based on any of the above embodiments, the refresh frequency adjusting apparatus of the display panel 10 further includes:
a sending module disposed in the front-end video source 30, and a decompressing module, a second judging module and an updating module disposed in the timing controller 20; the sending module is used for sending the video source signal to the decompression module; the decompression module is used for decompressing the received video source signal to obtain the pixel clock signal; the second judging module is configured to judge whether the pixel clock signal is the second pixel clock signal; if the pixel clock signal is the second pixel clock signal, the update module updates the value of the register inside the timing controller 20.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above embodiments are described in detail, and specific examples are applied herein to explain the principles and implementations of the present application, and the above description of the embodiments is only used to help understand the technical solutions and their core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A method for adjusting a refresh frequency of a display panel, the method comprising:
the front-end video source judges whether the frame rate of a video source signal sent to the time sequence controller by the front-end video source is greater than a preset threshold value;
if the frame rate is greater than the preset threshold, the front-end video source switches the current pixel clock signal from a first pixel clock signal to a second pixel clock signal so as to improve the refresh frequency of the display panel; wherein a frequency of the second pixel clock signal is greater than a frequency of the first pixel clock signal.
2. The method as claimed in claim 1, wherein after the step "if the frame rate is greater than the preset threshold, the front-end video source switches the current pixel clock signal from the first pixel clock signal to the second pixel clock signal to increase the refresh frequency of the display panel", the method further comprises the following steps:
the front-end video source increases the total time the display panel scans in the vertical direction.
3. The refresh frequency adjustment method for a display panel according to claim 2, wherein after the step of "the front-end video source increases the total time of scanning of the display panel in the vertical direction", the refresh frequency adjustment method for a display panel further comprises the steps of:
the front-end video source sends the video source signal to the time sequence controller;
the time sequence controller decompresses the received video source signals to obtain the pixel clock signals;
the time schedule controller judges whether the pixel clock signal is the second pixel clock signal;
and if the pixel clock signal is the second pixel clock signal, the time schedule controller updates the value of a register in the time schedule controller.
4. The method according to claim 3, wherein the step of determining whether the pixel clock signal is the second pixel clock signal by the timing controller comprises the steps of:
the time schedule controller detects the frequency of the pixel clock signal;
the time schedule controller judges whether the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal;
and if the frequency of the pixel clock signal is equal to the frequency of the second pixel clock signal, the time schedule controller judges the pixel clock signal as the second pixel clock signal.
5. The method as claimed in claim 4, wherein the step of detecting the frequency of the pixel clock signal by the timing controller comprises the steps of:
the time schedule controller generates a plurality of sampling clock signals which are phase-shifted in sequence and have the same frequency;
the time schedule controller collects the high level of the pixel clock signal through a plurality of sampling clock signals and acquires the number of the sampling clock signals collected to the high level;
the time schedule controller calculates the high-level time length of the pixel clock signal according to the number and a preset time length calculation formula;
and the time schedule controller calculates the frequency of the pixel clock signal according to the duration and a preset frequency calculation formula.
6. The method for adjusting the refresh frequency of a display panel according to claim 5, wherein the time duration calculation formula is:
T＝t×n
wherein T is a duration of a high level of the pixel clock signal, T is a time interval between two adjacent sampling clock signals, and n is a number of the sampling clock signals which acquire the high level.
7. The method for adjusting a refresh frequency of a display panel according to claim 5, wherein the frequency calculation formula is:
Pixel_Clock_Frequency＝1/(2×T)
wherein, Pixel _ Clock _ Frequency is the Frequency of the Pixel Clock signal, and T is the duration of the high level of the Pixel Clock signal.
8. A refresh frequency adjustment device of a display panel, the refresh frequency adjustment device of the display panel comprising:
the first judging module and the switching module are arranged in the front-end video source; wherein the content of the first and second substances,
the first judging module is used for judging whether the frame rate of a video source signal sent by the front-end video source to the time sequence controller is greater than a preset threshold value or not;
if the frame rate is greater than the preset threshold, the switching module switches the current pixel clock signal from a first pixel clock signal to a second pixel clock signal so as to improve the refresh frequency of the display panel; wherein a frequency of the second pixel clock signal is greater than a frequency of the first pixel clock signal.
9. The apparatus for adjusting refresh frequency of a display panel according to claim 8, wherein said apparatus for adjusting refresh frequency of a display panel further comprises:
the adjusting module is arranged in the front-end video source;
the adjusting module is used for increasing the total time of scanning the display panel along the vertical direction.
10. The apparatus for adjusting a refresh frequency of a display panel according to claim 9, wherein the apparatus for adjusting a refresh frequency of a display panel further comprises:
the system comprises a sending module arranged in the front-end video source, and a decompression module, a second judgment module and an updating module which are arranged in the time sequence controller; wherein the content of the first and second substances,
the sending module is used for sending the video source signal to the decompression module;
the decompression module is used for decompressing the received video source signal to obtain the pixel clock signal;
the second judging module is configured to judge whether the pixel clock signal is the second pixel clock signal;
and if the pixel clock signal is the second pixel clock signal, the updating module updates the value of the register in the time schedule controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235368.1A CN111292668B (en) | 2020-03-30 | 2020-03-30 | Method and device for adjusting refresh frequency of display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235368.1A CN111292668B (en) | 2020-03-30 | 2020-03-30 | Method and device for adjusting refresh frequency of display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111292668A true CN111292668A (en) | 2020-06-16 |
| CN111292668B CN111292668B (en) | 2022-09-27 |
Family
ID=71021100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010235368.1A Active CN111292668B (en) | 2020-03-30 | 2020-03-30 | Method and device for adjusting refresh frequency of display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111292668B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097879A1 (en) * | 2021-12-04 | 2023-06-08 | 深圳市奥拓电子股份有限公司 | Adaptive adjustment method and apparatus for refresh rate, and led display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487739A (en) * | 2002-03-04 | 2004-04-07 | �����ɷ� | Method and device for bridging different video formats |
| CN1960461A (en) * | 2005-10-31 | 2007-05-09 | 三星电子株式会社 | Video signal receiver including display synchronizing signal generation device and control method thereof |
| CN105007443A (en) * | 2015-07-08 | 2015-10-28 | 福州瑞芯微电子股份有限公司 | Video frequency conversion playing method and device |
| CN107358933A (en) * | 2017-09-15 | 2017-11-17 | 深圳市华星光电技术有限公司 | The white balance method and device of liquid crystal display panel |
| CN107734323A (en) * | 2017-09-13 | 2018-02-23 | 深圳市华星光电技术有限公司 | A kind of proof of algorithm platform and method |
| CN107945756A (en) * | 2017-11-21 | 2018-04-20 | 深圳市华星光电技术有限公司 | The white balance method and device of liquid crystal display panel |
| CN109640168A (en) * | 2018-11-27 | 2019-04-16 | Oppo广东移动通信有限公司 | Method for processing video frequency, device, electronic equipment and computer-readable medium |
-
2020
- 2020-03-30 CN CN202010235368.1A patent/CN111292668B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487739A (en) * | 2002-03-04 | 2004-04-07 | �����ɷ� | Method and device for bridging different video formats |
| CN1960461A (en) * | 2005-10-31 | 2007-05-09 | 三星电子株式会社 | Video signal receiver including display synchronizing signal generation device and control method thereof |
| CN105007443A (en) * | 2015-07-08 | 2015-10-28 | 福州瑞芯微电子股份有限公司 | Video frequency conversion playing method and device |
| CN107734323A (en) * | 2017-09-13 | 2018-02-23 | 深圳市华星光电技术有限公司 | A kind of proof of algorithm platform and method |
| CN107358933A (en) * | 2017-09-15 | 2017-11-17 | 深圳市华星光电技术有限公司 | The white balance method and device of liquid crystal display panel |
| CN107945756A (en) * | 2017-11-21 | 2018-04-20 | 深圳市华星光电技术有限公司 | The white balance method and device of liquid crystal display panel |
| CN109640168A (en) * | 2018-11-27 | 2019-04-16 | Oppo广东移动通信有限公司 | Method for processing video frequency, device, electronic equipment and computer-readable medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097879A1 (en) * | 2021-12-04 | 2023-06-08 | 深圳市奥拓电子股份有限公司 | Adaptive adjustment method and apparatus for refresh rate, and led display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111292668B (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7158186B2 (en) | Method and system for changing the frame rate to be optimal for the material being displayed while maintaining a stable image throughout | |
| KR100339898B1 (en) | Image display apparatus | |
| EP1763255A1 (en) | Projection type display device and method for controlling the same | |
| CN110999275B (en) | Video signal non-black screen switching processing method and device | |
| US7880713B2 (en) | Method of increasing efficiency of video display and related apparatus | |
| US7508449B1 (en) | Film mode judder elimination circuit and method | |
| CN113327535A (en) | Adjusting method and adjusting system for display picture of display panel | |
| JP3301803B2 (en) | Television receiver | |
| KR100746525B1 (en) | Display frame rate adaptation | |
| CN111292668B (en) | Method and device for adjusting refresh frequency of display panel | |
| JP2002351442A (en) | Persistence preventing device for image display device | |
| KR100468209B1 (en) | Electric bulletin board for processing image with variety characteristic and scaling | |
| EP1492335B1 (en) | Video signal processing apparatus | |
| KR100385975B1 (en) | Apparatus for converting video format and method thereof | |
| US6989870B2 (en) | Video signal processing apparatus and method capable of converting an interlace video signal into a non-interlace video signal | |
| JP2003323168A (en) | Projector | |
| CN1288329A (en) | Image signal pattern conversion and device therefor | |
| JP2000125230A (en) | Display device | |
| KR100640814B1 (en) | Deinterlace display apparatus of picture device and method thereof | |
| WO2013015177A1 (en) | Video signal control device, video signal control method, and display device | |
| JP4596299B2 (en) | Method for reducing streak in display screen and image display apparatus thereof | |
| KR100301516B1 (en) | Apparatus for optimum adjusting screen position of digital television | |
| KR200309953Y1 (en) | Electric bulletin board for processing image with variety characteristic and scaling | |
| CN100342731C (en) | Deinterlacing of mixed progressive and non-progressive sequences | |
| KR100277727B1 (en) | Horizontal line information detection device of composite video signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |