Refresh rate test method and related device

Abstract

The invention discloses a refresh rate test method and a related device. The method comprises the steps that a first signal obtained after brightness collection and processing are carried out when a display device plays a first image and a second signal obtained after brightness collection and processing are carried out when a second image is played are obtained, the first signal and the second signal both comprise a high-level signal and a low-level signal, the first image is an image displaying at least one transverse line, and the second image is an image displaying at least one transverse line; the second image is an image displaying at least one vertical line; determining a target signal from the first signal and the second signal, wherein the target signal is a signal with relatively long accumulated duration of the low-level signal; and determining the refresh rate of the display device according to the number of the high-level signals in the target signals. In this way, the refresh rate of the screen of the display device can be rapidly and reliably detected.

Description

Technical Field

[0001] The present application relates to the field of screen testing, and in particular to a refresh rate testing method and related devices. Background Art

[0002] PWM (Pulse Width Modulation) is a common technique for controlling LED brightness. The modulation period is expressed as the refresh rate of the display screen. A higher refresh rate improves image quality and video smoothness, reduces flicker and alleviates visual fatigue, and also facilitates applications such as camera capture.

[0003] Currently, the most common method for measuring the refresh rate of display screens is to use a photoelectric sensor or oscilloscope to evaluate the highest brightness level. However, these methods ultimately rely on human observation to determine the detection signal period and thus determine the screen refresh rate. Furthermore, due to the two refresh modes of display screens, these screen testing methods may also suffer from high measurement equipment costs, complex hardware design, and cumbersome testing procedures, making it difficult to quickly and conveniently measure the refresh rate of display screens. Summary of the Invention

[0004] The main purpose of this application is to provide a refresh rate testing method and related devices, which can quickly and reliably detect the refresh rate of the display device screen.

[0005] In a first aspect, the present application provides a refresh rate testing method. The method includes acquiring a first signal obtained by performing brightness acquisition and processing when a display device plays a first image, and acquiring a second signal obtained by performing brightness acquisition and processing when a second image plays, wherein the first signal and the second signal both include a high-level signal and a low-level signal, the first image is an image displaying at least one horizontal line, and the second image is an image displaying at least one vertical line; determining a target signal from the first signal and the second signal, wherein the target signal is a signal having a relatively long cumulative duration of a low-level signal; and determining the refresh rate of the display device based on the number of high-level signals in the target signal.

[0006] Among them, the refresh rate of the display device is determined according to the number of high-level signals in the target signal, including: determining the single-frame time of the display device playing the image when the target signal is obtained; determining the target number of high-level signals of the target signal within the single-frame time; and determining the refresh rate of the display device according to the target number and the single-frame time.

[0007] Among them, the refresh rate of the display device is determined according to the target number and the single frame time, including: obtaining the target frame rate by dividing one second by the duration value corresponding to the single frame time; and determining the refresh rate of the display device according to the target number, the number of lines in the image played by the display device when obtaining the target signal, and the target frame rate.

[0008] The refresh rate of the display device is determined based on the target number, the number of lines in the image played by the display device when the target signal is obtained, and the target frame rate, including: dividing the target number by the number of lines to obtain the number of refreshes of the display device within a single frame time; multiplying the number of refreshes of the display device within a single frame time by the target frame rate to obtain the refresh rate of the display device.

[0009] Determining the single frame time of the display device playing the image when acquiring the target signal includes: performing period detection on the target signal to determine the fundamental wave period of the target signal; and determining the time corresponding to the fundamental wave period as the single frame time.

[0010] The process of performing period detection on the target signal to determine a single period of the target signal includes: determining an inter-frame time interval of the high-level signal in the target signal; and determining a fundamental wave period of the target signal according to adjacent inter-frame time intervals.

[0011] Among them, determining the fundamental wave period of the target signal according to the adjacent inter-frame time intervals includes: determining the start time of the first inter-frame time interval in front as the target start time of the single frame time, and the start time of the second inter-frame time interval in the back as the target end time of the single frame time, or determining the end time of the first inter-frame time interval in front as the target start time of the single frame time, and the end time of the second inter-frame time interval in the back as the target end time of the single frame time; determining the fundamental wave period of the target signal according to the target start time and the target end time.

[0012] Before playing the first image and the second image through the display device to obtain the first signal and the second signal, the method includes: performing a preheating process on the display device.

[0013] In a second aspect, the present application provides an electronic device comprising a memory and a processor, wherein the memory is used to store program data, and the program data can be executed by the processor to implement the method described in the first technical solution.

[0014] In a third aspect, the present application provides a refresh rate detection device. The refresh rate detection device includes a display device to be detected, configured to display a first image and a second image; a brightness acquisition device, configured to acquire brightness when the display device to be detected displays the first image and the second image; and an electronic device such as the electronic device in the second aspect, the electronic device being communicatively connected to the display device to be detected and the brightness acquisition device to implement the refresh rate testing method in the first aspect.

[0015] The beneficial effects of the present application are: in this embodiment, the present application obtains the first and second signals of the display device playing two images, and according to the form of the signal, from the two signals, the signal with the longer cumulative duration of the low-level signal is determined as the target signal for obtaining the refresh rate of the display device. By making a preliminary judgment on the two signals, a signal for detecting the actual refresh rate of the display device is obtained, and then the accurate refresh rate of the display device is determined according to the signal, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a flow chart of the first embodiment of the refresh rate testing method of the present application;

[0018] Figure 2 2 is a schematic diagram of cumulative distribution of brightness signals of a first image and a second image acquired in a horizontal scanning mode;

[0019] Figure 3 It is a schematic diagram showing a horizontal line with a single pixel width;

[0020] Figure 4 It is a schematic diagram showing a vertical line with a single pixel width;

[0021] Figure 5 is a schematic diagram showing multiple horizontal lines;

[0022] Figure 6 is a schematic diagram showing multiple vertical lines;

[0023] Figure 7 This is a flow chart of the second embodiment of the refresh rate testing method of the present application;

[0024] Figure 8 This is a flow chart of the third embodiment of the refresh rate testing method of the present application;

[0025] Figure 9 This is a flow chart of the fourth embodiment of the refresh rate testing method of the present application;

[0026] Figure 10 This is a flow chart of the fifth embodiment of the refresh rate testing method of the present application;

[0027] Figure 11 This is a schematic diagram for determining the single frame time;

[0028] Figure 12This is a schematic structural diagram of an embodiment of an electronic device of the present application;

[0029] Figure 13 It is a structural diagram of an embodiment of the refresh rate detection device of the present application. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0034] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0035] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0036] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0037] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0038] There are two ways to refresh a display screen: horizontal scanning and vertical scanning. Horizontal scanning involves scanning the electron beam or pixels from left to right, i.e., horizontal scanning. In horizontal scanning, the electron beam scans the screen from left to right, then moves downward row by row to complete the entire screen scan. Vertical scanning involves scanning the electron beam or pixels from top to bottom, i.e., vertical scanning. In vertical scanning, the electron beam scans the screen from top to bottom, then moves rightward column by column to complete the entire screen scan.

[0039] Taking into account two different refresh modes, this application proposes a refresh rate testing method and related devices.

[0040] Reference Figure 1 , Figure 1 FIG1 is a flow chart of a first embodiment of a refresh rate test method of the present application. The method is applied to a display device and includes the following steps.

[0041] S11: Acquire a first signal obtained by collecting and processing brightness when the display device plays a first image, and acquire a second signal obtained by collecting and processing brightness when the display device plays a second image.

[0042] When a display device plays an image, a brightness acquisition device collects brightness signals. The brightness signals are then binarized to obtain level signals. The first signal is obtained by binarizing the brightness signal obtained by the brightness acquisition device after the brightness acquisition device acquires the brightness of the display device playing the first image. The second signal is obtained by binarizing the brightness signal obtained by the brightness acquisition device after the brightness acquisition device acquires the brightness of the display device playing the second image. The binarization process can be completed by the brightness acquisition device or by the controller of another device. The first signal and the second signal both include high-level signals and low-level signals. The first image is an image showing at least one horizontal line, and the second image is an image showing at least one vertical line. A horizontal line in the first image refers to a line whose horizontal width is greater than its vertical width. A vertical line in the second image refers to a line whose vertical width is greater than its horizontal width.

[0043] There are no restrictions on the grayscale and color properties of the horizontal line in the first image and the vertical line in the second image. The only restriction is that when the display device plays, the brightness of the position or pixel where the horizontal or vertical line is located is greater than the brightness of other positions or pixels on the screen.

[0044] S12: Determine a target signal from the first brightness signal and the second brightness signal, where the target signal is a signal with a relatively long cumulative duration of a low-level signal.

[0045] If the refresh mode of the display device is horizontal scanning, then when the display device plays the first image, each time the screen is refreshed, when scanning to the position of the horizontal line, the brightness of the display device will increase, and during the time of scanning the horizontal line, the brightness acquisition device will collect the high brightness information at this time to generate a high brightness signal. When scanning other positions of the screen, no high brightness signal will be generated. When the display device plays the second image, when scanning to the position of the vertical line in each row scan, it will collect and generate a high brightness signal. Since the brightness value in the brightness signal changes gradually, when collecting the brightness signal, the high brightness signal generated by the high brightness pixel will have a certain impact on the brightness collection of the low brightness pixels next to it. And each time the screen is refreshed, the number of highlight signals generated by playing the second image is greater than the number of highlight signals generated by playing the first image, so when playing the second image, the low brightness pixels are more affected. Therefore, in the collected brightness signals, the number of zero brightness signals in the brightness signal collected by playing the first image is greater than the number of zero brightness signals in the brightness signal collected by playing the second image. Figure 2 As shown, Figure 2Figure 2 shows the cumulative distribution of luminance signals for the first and second images captured in horizontal scanning mode. The horizontal axis represents signal duration, and the vertical axis represents signal luminance. It can be seen that, given the same acquisition time, the duration of the low-luminance signal corresponding to the first image is longer. Therefore, after binarization, the cumulative duration of the low-level signal corresponding to the first image is longer in horizontal scanning mode.

[0046] Similarly, if the refresh mode of the display device is vertical scanning, then in the vertical scanning mode, the cumulative duration of the low-level signal corresponding to the second image is longer.

[0047] After acquiring the first and second signals, a corresponding target signal for calculating the refresh rate of the display device is determined based on the duration of the low-level signals. If the low-level duration of the first signal is longer, the display device is determined to be in horizontal scanning mode, and the first signal is used as the target signal. If the low-level duration of the second signal is longer, the display device is determined to be in vertical scanning mode, and the second signal is used as the target signal.

[0048] S13: Determine a refresh rate of the display device according to the number of high brightness signals in the target brightness signal.

[0049] After the target signal is determined, each screen refresh corresponds to at least one high-level signal, and the refresh rate of the display device can be determined based on the number of high-brightness signals in the target signal.

[0050] In this embodiment, the present application obtains the first and second signals of the display device playing two images. According to the form of the signal, from the two signals, the signal with the longer cumulative duration of the low-level signal is determined as the target signal for obtaining the refresh rate of the display device. By making a preliminary judgment on the two signals, a signal for detecting the actual refresh rate of the display device is obtained, and then the accurate refresh rate of the display device is determined based on the signal, which is convenient and quick.

[0051] In one embodiment, the first image is an image showing a horizontal line with a single pixel width, and the pixel value of the horizontal line in the column direction is one, and the second image is an image showing a vertical line with a single pixel width, and the pixel value of the vertical line in the horizontal direction is one. Figure 3 and Figure 4 As shown, each grid in the figure corresponds to a pixel, and the gray part is the pixel with higher brightness. Figure 3 A schematic diagram showing a single-pixel width horizontal line. Figure 4 A schematic diagram showing a vertical line with a single pixel width.

[0052] In one embodiment, the first image may display multiple horizontal lines, and the second image may display multiple vertical lines. Figure 5 and Figure 6 , Figure 5To show a schematic diagram of multiple horizontal lines, Figure 6 This is a diagram showing multiple vertical lines. The number of pixels between each horizontal line can be the same or different. The number of pixels between each vertical line can be the same or different.

[0053] In one embodiment, the width of a horizontal line may be multiple pixels.

[0054] In one embodiment, the width of a vertical line may be multiple pixels.

[0055] In one embodiment, when the first image displays a horizontal line with a width of one pixel, the number of pixels in the length of the horizontal line may be less than the number of pixels arranged in the horizontal direction of the display device. For example, if the first image displays a horizontal line with a width of one pixel and the number of pixels in the horizontal direction of the display device is 40, the number of pixels in the length of the horizontal line may be 30, so as not to occupy all pixels in the horizontal direction of the display device.

[0056] In one embodiment, when the second image displays a vertical line with a width of one pixel, the number of pixels for the length of the vertical line may be less than the number of pixels arranged in the vertical direction of the display device. For example, if the second image displays a vertical line with a width of one pixel and the number of pixels in the vertical direction of the display device is 30, the number of pixels for the length of the vertical line may be 20, so as not to occupy all pixels of the display device in the vertical direction.

[0057] Setting the width of the horizontal or vertical line to a single pixel or the number of lines to a single line is to reduce the impact of the pixel where the horizontal or vertical line is located on the brightness detection of the adjacent area when emitting light, thereby avoiding the impact on the brightness signal collected by the brightness acquisition device, ensuring the accuracy of the subsequent judgment process and the accuracy of the refresh rate obtained, and also helping to simplify the subsequent calculation steps and improve calculation efficiency.

[0058] In one embodiment, the pixel value of the horizontal line in the horizontal direction is not less than sixteen.

[0059] In one embodiment, the pixel value of the vertical line in the column direction is not less than sixteen.

[0060] In one embodiment, the number of lines in the first image is the same as the number of lines in the second image.

[0061] Reference Figure 7 , Figure 7 This is a flow chart of the second embodiment of the refresh rate test method of this application. This method is a further extension of step S13 and includes the following steps.

[0062] S21: Determine a single frame time of an image played by a display device when acquiring a target signal.

[0063] A single frame time is the time it takes for a display device to display one frame. Since the brightness signal collected when the display device displays each frame is similar, the change in the target signal within one frame can be used to determine the change in the target signal within one second.

[0064] S22: Determine the target number of high-level signals of the target signal within a single frame time.

[0065] When the display device scans the screen once, a high-level signal is generated each time a horizontal line or a vertical line is scanned. Therefore, by determining the number of high-level signals within a single frame time, the number of times the display device is refreshed within the single frame time can be further determined.

[0066] S23: Determine a refresh rate of the display device according to the target number and the single frame time.

[0067] After obtaining the number of screen refreshes within a single frame time, combined with the target single frame time, the refresh rate of the display device can be obtained.

[0068] Reference Figure 8 , Figure 8 This is a flow chart of the third embodiment of the refresh rate test method of this application. This method is a further extension of step S23 and includes the following steps.

[0069] S31: Calculate the target frame rate by dividing one second by the duration corresponding to the single frame time.

[0070] After determining the single frame time, if the time period from T1 to T2 is the single frame time of the display device image, the duration value corresponding to the single frame time is T = T2 - T1. Then, divide the time value T by one second to obtain the target frame rate of the display device playback image.

[0071] S32: Determine a refresh rate of the display device according to the target number, the number of lines in the image played by the display device when the target signal is acquired, and the target frame rate.

[0072] After obtaining the target frame rate, the refresh rate of the display device can be calculated. Specifically, this includes dividing the target number by the number of lines to obtain the number of refreshes of the display device within a single frame time, and multiplying the number of refreshes of the display device within a single frame time by the target frame rate to obtain the refresh rate of the display device.

[0073] For example, when the display device plays a first image with a single horizontal line, if the target number of high-brightness signals acquired within a single frame time is A, and the target frame rate is B, then the refresh rate of the display device is A × B. If the display device plays a first image with two horizontal lines, if the target number of high-brightness signals within a single frame time is A, and the target frame rate is B, then the number of refreshes of the display device within a single frame time is A / 2. The refresh rate of the display device is A / 2 × B.

[0074] If the target frame rate of the playback image has been determined in advance, there is no need to determine the specific duration value of the single frame time. After determining the position of the single frame time, the target number can be obtained directly, and the refresh rate of the display device can be obtained based on the target number and frame rate.

[0075] Reference Figure 9 , Figure 9 This is a flow chart of the fourth embodiment of the refresh rate test method of this application. This method is a further extension of the above embodiment and includes the following steps.

[0076] S41: Perform period detection on the target signal to determine the fundamental wave period of the target signal.

[0077] The smallest period in a periodic signal is called the fundamental period.

[0078] S42: Determine that the time corresponding to the fundamental wave period is a single frame time.

[0079] Because a high-brightness signal is generated each time the screen refreshes past a horizontal or vertical line, and the position of the horizontal or vertical line remains unchanged, the high-brightness signal changes periodically. Furthermore, when the display device switches between frames while playing an image, the low brightness is maintained for a longer period than during each screen refresh. Therefore, the resulting fundamental wave period corresponds to the switching between frames, and therefore can be considered to correspond to the duration of a single frame when the display device plays an image.

[0080] Reference Figure 10 , Figure 10 This is a flow chart of the fifth embodiment of the refresh rate test method of the present application. This method is a further extension of the above embodiment and includes the following steps.

[0081] S51: Determine the inter-frame time interval of the high-level signal in the target signal.

[0082] Since each time the screen refreshes past a horizontal or vertical line, a high-brightness signal is generated, corresponding to a high-level signal in the target signal, and the position of the horizontal or vertical line remains unchanged, the time intervals between the high-level signals are the same. However, since there is frame switching during image playback, the switching between frames results in a larger time interval between high-level signals corresponding to different frames. Therefore, in the resulting target signal, there are two types of time intervals between high-level signals: inter-frame time interval and intra-frame time interval, where the inter-frame time interval is greater than the intra-frame time interval. The inter-frame time interval corresponds to the time interval between two adjacent high-level signals belonging to different frames, and the intra-frame time interval corresponds to the time interval between two adjacent high-level signals belonging to the same frame.

[0083] S52: Determine the fundamental wave period of the target signal according to the time interval between adjacent frames.

[0084] Because the inter-frame time interval corresponds to the time interval between high-level signals when switching between different image frames, the fundamental wave period of the target signal, that is, the single-frame time required for the display device to play a single image frame, can be determined based on the adjacent inter-frame time intervals. Furthermore, the target number of high-level signals within this fundamental wave period or single-frame time can be determined.

[0085] In one embodiment, determining the fundamental wave period of the target signal based on adjacent inter-frame time intervals includes: determining the start time of a first inter-frame time interval that is in front as the target start time of the single frame time and the start time of a second inter-frame time interval that is in the back as the target end time of the single frame time, or determining the end time of the first inter-frame time interval that is in front as the target start time of the single frame time and the end time of the second inter-frame time interval that is in the back as the target end time of the single frame time; determining the single frame time of the target video based on the target start time and the target end time.

[0086] Reference Figure 11 , Figure 11 This is a schematic diagram for determining the fundamental wave period. In the figure, T3 is the inter-frame time interval, and T4 is the intra-frame time interval. Within adjacent inter-frame time intervals T3, the start time of the preceding inter-frame time interval T3 is used as the target start time for the single frame time, and the start time of the succeeding inter-frame time interval T3 is used as the target end time for the single frame time. This ultimately yields the fundamental wave period, or single frame time T. The number of high-brightness signals within time T is determined to be N.

[0087] The process of determining the fundamental period by the end time of the inter-frame time interval is similar to that by the start time. Figure 11 The description of determining the single frame time by the start time will not be repeated here.

[0088] In one embodiment, before playing the first image and the second image through the display device to obtain the first signal and the second signal, the method includes: performing a preheating process on the display device.

[0089] Before using the display device to play the first image and the second image, the display device needs to be preheated to ensure the accuracy of the signal obtained in the subsequent detection process.

[0090] Specifically, the preheating process may include lighting up all light-emitting diodes at 30% of the maximum brightness, and the preheating time is not less than 15 minutes.

[0091] When using the display device to play the first image and the second image, it should also be noted that it is necessary to ensure that the surrounding environment or test conditions will not have a significant impact on the detection process.

[0092] For example, it's necessary to ensure that the test environment is free of mechanical vibration, electromagnetic interference, photoelectric interference, or other damaging factors that could affect test accuracy. The basic functions of the display device must be debugged to normal operation, and the display's configuration parameters and operating status must not be altered during testing. It's also necessary to ensure that ambient lighting fluctuations are less than 10%, and that no noticeable colored light sources are present. For weather factors, for example, the temperature must be maintained between 15°C and 30°C.

[0093] When using a brightness acquisition device to test a display device, it is necessary to ensure that no significant ambient light leaks into the test scene during testing. The brightness acquisition device must be aligned with the display screen to prevent side light leakage. The sampling frequency of the brightness acquisition device used must be high, at least twice the actual refresh rate of the display device, to complete the refresh rate test of the display device.

[0094] like Figure 12 As shown, Figure 12 This is a structural diagram of an embodiment of an electronic device of the present application.

[0095] The electronic device includes a processor 110 and a memory 120 .

[0096] The processor 110 controls the operation of the electronic device and may also be referred to as a CPU (Central Processing Unit). The processor 110 may be an integrated circuit chip with the ability to process signal sequences. The processor 110 may also be a general-purpose processor, a digital signal sequence processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The general-purpose processor may be a microprocessor or any conventional processor.

[0097] The memory 120 stores instructions and program data required for the processor 110 to operate.

[0098] The processor 110 is configured to execute instructions to implement the method provided by any embodiment and possible combination of the refresh rate detection method described above in this application.

[0099] like Figure 13 As shown, Figure 13 This is a structural diagram of an embodiment of the refresh rate detection device of the present application.

[0100] The refresh rate detection device includes a display device 210 to be detected, a brightness collection device 220, and an electronic device 230 described in the electronic device embodiment of the present application. The display device 210 to be detected is used to display and play a first image and a second image. The brightness collection device 220 is used to collect brightness when the display device to be detected displays and plays the first image and the second image. The electronic device 230 is communicatively connected with the display device 210 to be detected and the brightness collection device 220 to implement the method provided by any embodiment and possible combination of the refresh rate detection method of the present application.

[0101] In this embodiment, the present application obtains the first and second signals of the display device playing two images. According to the form of the signal, from the two signals, the signal with the longer cumulative duration of the low-level signal is determined as the target signal for obtaining the refresh rate of the display device. By making a preliminary judgment on the two signals, a signal for detecting the actual refresh rate of the display device is obtained, and then the accurate refresh rate of the display device is determined based on the signal, which is convenient and quick.

[0102] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical functional division. In actual implementation, other division methods may be used, such as combining or integrating multiple units or components into another system, or ignoring or not implementing certain features.

[0103] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of this embodiment.

[0104] In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0105] If the integrated units in the above other embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0106] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A refresh rate testing method, characterized in that: The method comprises: Acquiring a first signal obtained by performing brightness acquisition and processing when the display device plays a first image, and a second signal obtained by performing brightness acquisition and processing when the display device plays a second image, wherein the first signal and the second signal both include a high-level signal and a low-level signal, the first image is an image displaying at least one horizontal line, and the second image is an image displaying at least one vertical line; Determine a target signal from the first signal and the second signal, wherein the target signal is a signal having a long cumulative duration of a low-level signal; The refresh rate of the display device is determined according to the number of the high-level signals in the target signal.

2. The method according to claim 1, characterized in that Determining the refresh rate of the display device according to the number of the high-level signals in the target signal includes: determining a single frame time of an image played by the display device when acquiring the target signal; Determine a target number of high-level signals of the target signal within the single frame time; The refresh rate of the display device is determined according to the target number and the single frame time.

3. The method according to claim 2, characterized in that Determining the refresh rate of the display device according to the target number and the single frame time includes: Calculate the target frame rate by dividing one second by the duration corresponding to the single frame time. The refresh rate of the display device is determined according to the target number, the number of lines in the image played by the display device when the target signal is acquired, and the target frame rate.

4. The method according to claim 3, characterized in that The determining the refresh rate of the display device according to the target number, the number of lines in the image played by the display device when the target signal is obtained, and the target frame rate includes: Dividing the target number by the number of lines to obtain the number of refreshes of the display device within the single frame time; The refresh rate of the display device is obtained by multiplying the number of refreshes of the display device within the single frame time by the target frame rate.

5. The method according to claim 2, characterized in that The determining of a single frame time of an image played by the display device when acquiring the target signal includes: Performing period detection on the target signal to determine the fundamental wave period of the target signal; The time corresponding to the fundamental wave period is determined as the single frame time.

6. The method according to claim 5, characterized in that The performing period detection on the target signal to determine a single period of the target signal includes: determining an inter-frame time interval of the high-level signal in the target signal; The fundamental wave period of the target signal is determined according to the time intervals between adjacent frames.

7. The method according to claim 6, characterized in that The determining of the fundamental wave period of the target signal according to the adjacent inter-frame time intervals includes: determining a start time of a first inter-frame time interval that precedes the target start time of the single-frame time and a start time of a second inter-frame time interval that follows the target end time of the single-frame time, or determining an end time of the first inter-frame time interval that precedes the target start time of the single-frame time and an end time of the second inter-frame time interval that follows the target end time of the single-frame time; The fundamental wave period of the target signal is determined according to the target start time and the target end time.

8. The method according to claim 1, characterized in that Before playing the first image and the second image through the display device to obtain the first signal and the second signal, the method includes: The display device is preheated.

9. An electronic device, characterized in that: The system comprises a memory and a processor, wherein the memory is used to store program data, and the program data can be executed by the processor to implement the method according to any one of claims 1 to 8.

10. A refresh rate detection system, characterized in that: include: a display device to be detected, configured to display a first image and a second image; a brightness acquisition device, configured to acquire brightness when the display device to be detected displays the first image and the second image; The electronic device according to claim 9, wherein the electronic device is communicatively connected to the display device to be detected and the brightness acquisition device to implement the method according to any one of claims 1 to 8.

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