WO2023097879A1 - 一种刷新率自适应的调节方法、装置及led显示设备 - Google Patents

一种刷新率自适应的调节方法、装置及led显示设备 Download PDF

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Publication number
WO2023097879A1
WO2023097879A1 PCT/CN2022/073012 CN2022073012W WO2023097879A1 WO 2023097879 A1 WO2023097879 A1 WO 2023097879A1 CN 2022073012 W CN2022073012 W CN 2022073012W WO 2023097879 A1 WO2023097879 A1 WO 2023097879A1
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Prior art keywords
time interval
subframe
vertical synchronization
signal
refresh
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PCT/CN2022/073012
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English (en)
French (fr)
Inventor
吴涵渠
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深圳市奥拓电子股份有限公司
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Publication of WO2023097879A1 publication Critical patent/WO2023097879A1/zh

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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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes

Definitions

  • the present application relates to the field of LED display equipment, in particular to a refresh rate self-adaptive adjustment method, device and LED display equipment.
  • LED display screen displays a frame of graphics
  • N groups of subframes are sent, and each group of subframes includes M scan numbers.
  • M scan numbers When the LED display completes M scans, it means that all the rows of the LED display are lit to form a graphic.
  • each group of sub-frames will control the LED display to be fully lit once.
  • the refresh rate of the LED display is related to the frame rate of the video source and the number of refresh groups.
  • the number of refresh groups does not change with the frame rate of the video source, which leads to a mismatch between the number of refresh groups of the LED display and the frame rate of the video source, which leads to flickering or bright lines on the LED screen.
  • the embodiment of the present application provides a refresh rate self-adaptive adjustment method for an LED display device, the method comprising:
  • the display image is refreshed according to the number of refresh groups.
  • the calculating the time interval of the vertical synchronization signal includes:
  • a time interval of a vertical synchronization signal is determined according to the first count value and the first preset frequency.
  • the calculating the time interval of the subframe change signal includes:
  • a time interval for changing subframe signals is determined according to the second count value and the second preset frequency.
  • the calculation formula for determining the time interval of the vertical synchronization signal according to the first count value and the first preset frequency is:
  • the time interval of the vertical synchronization signal the first preset frequency/the first count value.
  • the calculation formula for determining the time interval for changing the subframe signal according to the second count value and the second preset frequency is:
  • the time interval for changing the subframe signal the second preset frequency/the second count value.
  • the calculation formula for determining the number of refresh groups based on the time interval of the vertical synchronization signal and the time interval of the subframe signal is:
  • Number of refresh groups [time interval of changing subframe signal/time interval of vertical synchronization signal]
  • the embodiment of the present application also provides an adaptive refresh rate adjustment device for an LED display device, including:
  • An acquisition module configured to acquire at least one vertical synchronization signal and at least one subframe changing signal
  • a first calculation module configured to calculate the time intervals of the subframe change signal and the vertical synchronization signal respectively
  • the second calculation module is used to determine the number of refresh groups based on the time interval of the vertical synchronization signal and the time interval of the subframe change signal;
  • a refresh module configured to refresh the display image according to the number of refresh groups.
  • the first calculation module is specifically used for:
  • a time interval for changing subframe signals is determined according to the second count value and the second preset frequency.
  • the embodiment of the present application also provides an LED display device, including:
  • the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can perform the above method.
  • the embodiment of the present application also provides a non-volatile computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor , causing the processor to execute the above method.
  • a refresh rate self-adaptive adjustment method, device and LED display device obtain at least one vertical synchronous signal and at least one subframe change signal, then calculate the time interval of the subframe change signal and the vertical synchronization signal respectively, then based on the time interval of the vertical synchronization signal and the time interval of the subframe change signal Determine the number of refresh groups, and finally refresh the display image based on the number of refresh groups, so that the number of refresh groups obtained through the above method will change with the frame rate of the video source, so that the number of refresh groups can be adjusted according to the frame rate of the video source
  • the frequency is automatically adjusted, which can eliminate the problems of flickering and bright lines on the LED screen.
  • FIG. 1 is a schematic flowchart of an adaptive adjustment method for a refresh rate in an embodiment of the present application
  • FIG. 2 is a schematic flow chart of refresh rate adaptation in an embodiment of the present application
  • FIG. 3 is a schematic diagram of a black screen time greater than a group of subframe times in an embodiment of the present application
  • FIG. 4 is a schematic diagram of a black screen time less than or equal to a group of subframe times in an embodiment of the present application
  • FIG. 5 is a schematic structural diagram of an adjusting device for adaptive refresh rate in an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a hardware structure of an LED display device in an embodiment of the present application.
  • the embodiment of the present application provides an adaptive adjustment method of refresh rate, the method is executed by an LED display device, and the method includes:
  • Step 101 acquire at least one vertical synchronization signal and at least one subframe change signal.
  • the vertical synchronous signal is used to indicate the driving waveform required for converting the video data into the LED driving chip. Specifically, after the vertical synchronization signal input from the outside is obtained, the video data is converted into the driving waveform required by the LED driving chip.
  • the subframe change signal is a signal for switching one subframe to the next subframe, that is, the first subframe change signal of the second frame is switched to the second subframe change signal of the second frame. It should be noted that the first subframe change signal and the second subframe change signal in the embodiment of the present application are only defined for the convenience of describing the present application, and are relative concepts.
  • Step 102 calculating the time intervals of the subframe change signal and the vertical synchronization signal respectively.
  • Step 103 Determine the number of refresh groups based on the time interval of the vertical synchronization signal and the time interval of the subframe change signal.
  • the number of refresh groups of the LED display screen is fixed, it will not change with the change of the frame rate of the video source, resulting in problems of flickering and bright lines. Therefore, in the embodiment of the present application, the number of refresh groups is calculated by changing the time interval of the subframe signal and the time interval of the vertical synchronization signal, so that the number of refresh groups can be automatically adjusted to follow the frame rate of the video source, so that the subframe time can fill the LED When the display shows one frame, the screen flickering will be eliminated, and each sub-frame is complete, so the screen will not have the problem of bright lines.
  • the calculation of the time interval of the vertical synchronization signal includes: counting two consecutive frames of vertical synchronization signals according to a first preset frequency to obtain a first count value; according to the first preset frequency A count value and the first preset frequency determine the time interval of the vertical synchronization signal.
  • the first preset frequency can be set according to the actual situation, for example, the first preset frequency can be 125MHZ.
  • the calculation of the time interval of the subframe change signal includes: counting two consecutive frames of subframe change signals according to a second preset frequency to obtain a second count value; The second count value and the second preset frequency determine a time interval for changing subframe signals.
  • the second preset frequency may be consistent with the first preset frequency, for example, the second preset frequency may be 125 MHz. It should be noted that the counting of two consecutive frames of subframe-changing signals according to the second preset frequency starts from the first subframe-changing signal of the second frame.
  • nnew may be used to represent the number of refresh packets.
  • the number of refresh groups is determined by changing the time interval of the sub-frame signal and the time interval of the vertical synchronization signal, so that the number of refresh groups can follow the change of the frame rate of the video source.
  • Step 104 refresh the displayed image according to the number of refresh groups.
  • the displayed image after calculating the number of refresh groups based on the time interval of the vertical synchronization signal and the time interval of the subframe change signal, the displayed image can be refreshed according to the number of refresh groups.
  • the number of refresh groups is determined according to the time interval of the sub-frame signal, and finally the displayed image is refreshed according to the number of refresh groups, so that the number of refresh groups can be automatically adjusted according to the frame frequency of the video source, thereby eliminating the flickering and brightening of the LED screen. line problem.
  • both the first preset frequency and the second preset frequency are 125MHZ, and the first counter starts counting after receiving the first vertical synchronization signal.
  • the number of refresh groups of the LED display screen will not match the frame rate of the video source: when 1/f is much greater than T n , that is, when the time for one frame of the video source is much longer than that of sending n groups The time required to refresh the number of groups will cause the LED display to no longer light up any lamp beads after sending n groups to refresh the number of groups, and the screen is displayed as a black screen, which makes the screen flicker seriously when viewing the LED display with human eyes.
  • T n the last set of refresh packets cannot be completely sent, resulting in bright lines on the screen.
  • the embodiment of the present application also provides an adaptive refresh rate adjustment device.
  • the device 500 includes:
  • An acquisition module 501 configured to acquire at least one vertical synchronization signal and at least one subframe change signal
  • a first calculation module 502 configured to calculate the time intervals of the subframe change signal and the vertical synchronization signal respectively;
  • the second calculation module 503 is used to determine the number of refresh groups based on the time interval of the vertical synchronization signal and the time interval of the subframe signal;
  • a refresh module 504, configured to refresh the display image according to the number of refresh groups.
  • An adaptive refresh rate adjustment device obtained in an embodiment of the present application obtains at least one vertical synchronization signal and at least one subframe signal through an acquisition module; and then calculates the subframe signal and the subframe signal respectively through a first calculation module The time interval of the vertical synchronization signal; then determine the number of refresh groups based on the time interval of the vertical synchronization signal and the time interval of the subframe signal by the second calculation module; finally use the refresh module to refresh the display image according to the number of refresh groups , so that the number of refresh groups can be automatically adjusted according to the frame rate of the video source, thereby eliminating the problems of flickering and bright lines on the LED screen.
  • the first calculation module 502 specifically uses:
  • a time interval for changing subframe signals is determined according to the second count value and the second preset frequency.
  • the calculation formula for determining the time interval of the vertical synchronization signal according to the first count value and the first preset frequency is:
  • the time interval of the vertical synchronization signal the first preset frequency/the first count value.
  • the calculation formula for determining the time interval for changing subframe signals according to the second count value and the second preset frequency is:
  • the time interval for changing the subframe signal the second preset frequency/the second count value.
  • the calculation formula for determining the number of refresh packets based on the time interval of the vertical synchronization signal and the time interval of the subframe signal is:
  • Number of refresh groups [time interval of changing subframe signal/time interval of vertical synchronization signal]
  • the above-mentioned device for adjusting an adaptive refresh rate can execute the corresponding functional modules and beneficial effects of the method for adjusting an adaptive refresh rate provided in the embodiment of the present application.
  • the adaptive refresh rate adjustment method provided in the embodiment of the present application.
  • FIG. 6 is a schematic diagram of the hardware structure of the LED display device provided by the embodiment of the present application. As shown in FIG. 6, the LED display device 600 includes:
  • the processor 601 and the memory 602 may be connected through a bus or in other ways, and connection through a bus is taken as an example in FIG. 6 .
  • the memory 602 as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, such as the refresh rate adaptive adjustment method in the embodiment of the present application corresponds to program instructions/modules.
  • the processor 601 executes various functional applications and data processing of the LED display device by running the non-volatile software programs, instructions and modules stored in the memory 602, that is, realizes the self-adaptive adjustment method of the refresh rate in the above method embodiment .
  • the memory 602 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the refresh rate adaptive adjustment device wait.
  • the memory 602 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • the memory 602 may optionally include a memory set remotely relative to the processor 601, and these remote memories may be connected to the refresh rate adaptive adjustment device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the embodiment of the present application also provides a non-volatile computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by one or more processors, the above-mentioned One or more processors may execute the refresh rate adaptive adjustment method in any of the foregoing method embodiments.
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each embodiment can be implemented by means of software plus a general hardware platform, and of course also by hardware.
  • all or part of the processes in the methods of the above embodiments can be completed by instructing related hardware through computer programs, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods.
  • the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (RandomAccessMemory, RAM), etc.

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Abstract

一种刷新率自适应的调节方法、装置及LED显示设备。方法包括：获取至少一个垂直同步信号和至少一个换子帧信号（101）；分别计算换子帧信号和垂直同步信号的时间间隔（102）；基于垂直同步信号的时间间隔和换子帧信号的时间间隔确定刷新分组数（103）；根据刷新分组数刷新显示图像（104），通过上述方式对显示设备进行刷新率自适应调节，使得刷新分组数能够根据视频源的帧频自动进行调节，从而能够消除LED屏幕出现的闪烁和亮线问题。

Description

一种刷新率自适应的调节方法、装置及LED显示设备
本申请要求于2021年12月04日在中国专利局提交的、申请号为202111475219.3的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及LED显示设备领域，特别是涉及一种刷新率自适应的调节方法、装置及LED显示设备。
 背景技术
随着科技的不断发展，LED显示屏的应用越来越广泛。LED显示屏显示一帧图形时，一般是发送了N组子帧，且每一组子帧都包含了M个扫描数。当LED显示屏完成M个扫描数后，也就意味着将LED显示屏的所有行点亮，从而形成一幅图形。
在传统技术中，每一组子帧都会控制LED显示屏完全点亮一次。LED显示屏的刷新率与视频源的帧频以及刷新分组数相关。但是传统技术中，刷新分组数不会随视频源的帧频变化而变化，从而导致LED显示屏的刷新分组数和视频源帧频不匹配，进而导致LED屏幕出现闪烁或者亮线问题。
 技术问题
基于此，有必要针对上述技术问题，提供一种刷新率自适应的调节方法、装置以及LED显示设备，能够解决LED屏幕出现闪烁和亮线的问题。
 技术解决方案
第一方面，本申请施例提供了一种刷新率自适应的调节方法，用于LED显示设备，所述方法包括：
获取至少一个垂直同步信号和至少一个换子帧信号；
分别计算所述换子帧信号和所述垂直同步信号的时间间隔；
基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数；
根据所述刷新分组数刷新显示图像。
在一些实施例中，所述计算所述垂直同步信号的时间间隔，包括：
按照第一预设频率对连续的两帧垂直同步信号进行计数，获得第一计数值；
根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔。
在一些实施例中，所述计算所述换子帧信号的时间间隔，包括：
按照第二预设频率对连续的两帧换子帧信号进行计数，获得第二计数值；
根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔。
在一些实施例中，所述根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔的计算公式为：
垂直同步信号的时间间隔=第一预设频率/第一计数值。
在一些实施例中，所述根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔的计算公式为：
换子帧信号的时间间隔=第二预设频率/第二计数值。
在一些实施例中，所述基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数的计算公式为：
刷新分组数=【换子帧信号的时间间隔/垂直同步信号的时间间隔】
其中，【】表示取整。
第二方面，本申请实施例还提供了一种刷新率自适应的调节装置，用于LED显示设备，包括：
获取模块，用于获取至少一个垂直同步信号和至少一个换子帧信号；
第一计算模块，用于分别计算所述换子帧信号和所述垂直同步信号的时间间隔；
第二计算模块，用于基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数；
刷新模块，用于根据所述刷新分组数刷新显示图像。
在一些实施例中，所述第一计算模块具体用于：
按照第一预设频率对连续的两帧垂直同步信号进行计数，获得第一计数值；
根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔；
按照第二预设频率对连续的两帧换子帧信号进行计数，获得第二计数值；
根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔。
第三方面，本申请实施例还提供了一种LED显示设备，包括：
至少一个处理器；以及，
与所述至少一个处理器通信连接的存储器；其中，
所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行上述方法。
第四方面，本申请实施例还提供了一种非易失性计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，当所述计算机可执行指令被处理器所执行时，使所述处理器执行上述方法。
 有益效果
与现有技术相比，本申请的有益效果是：区别于现有技术的情况，本申请实施例中一种刷新率自适应的调节方法、装置及LED显示设备，通过获取至少一个垂直同步信号和至少一个换子帧信号，然后分别计算所述换子帧信号的时间间隔和所述垂直同步信号的时间间隔，接着基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数，最后基于所述刷新分组数刷新显示图像，由此，通过上述方式获得的刷新分组数会随着视频源帧频的变化而变化，从而使得刷新分组数能够根据视频源的帧频自动进行调节，从而能够消除LED屏幕出现的闪烁和亮线的问题。
 附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本申请一个实施例中刷新率自适应的调节方法的流程示意图；
图2是本申请一个实施例中刷新率自适应的流程示意图；
图3是本申请一个实施例中黑屏时间大于一组子帧时间的示意图；
图4是本申请一个实施例中黑屏时间小于等于一组子帧时间的示意图；
图5是本申请一个实施例中刷新率自适应的调节装置的结构示意图；
图6是本申请一个实施例中LED显示设备的硬件结构示意图。
 本发明的实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，如果不冲突，本申请实施例中的各个特征可以相互结合，均在本申请的保护范围之内。另外，虽然在装置示意图中进行了功能模块划分，在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于装置中的模块划分，或流程图中的顺序执行所示出或描述的步骤。再者，本申请所采用的“第一”、“第二”、“第三”等字样并不对数据和执行次序进行限定，仅是对功能和作用基本相同的相同项或相似项进行区分。
如图1所示，本申请实施例提供了一种刷新率自适应的调节方法，所述方法由LED显示设备执行，所述方法包括：
步骤101，获取至少一个垂直同步信号和至少一个换子帧信号。
在本申请实施例中，垂直同步信号用于指示将视频数据转换为LED驱动芯片所需的驱动波形。具体地，当获取到外部输入的垂直同步信号后，则将视频数据转换为LED驱动芯片所需的驱动波形。换子帧信号为将一幅子帧切换到下一幅子帧的信号，即将第二帧的第一换子帧信号切换到第二帧的第二换子帧信号。需要说明的是，本申请实施例中的第一换子帧信号和第二换子帧信号只是为了便于说明本申请而定义的，是相对概念。
步骤102，分别计算所述换子帧信号和所述垂直同步信号的时间间隔。
步骤103，基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数。
在传统技术中，由于LED显示屏的刷新分组数是固定的，不会随着视频源帧频的改变而发生变化，从而出现闪烁感和亮线问题。因此，在本申请实施例中，通过换子帧信号的时间间隔和垂直同步信号的时间间隔来计算刷新分组数，让刷新分组数跟随视频源帧频自动进行调节，让子帧时间填满LED显示屏显示一帧的时间，屏幕闪烁感就会被消除，同时每一个子帧都是完整的，因此，屏幕不会产生亮线的问题。
作为步骤102的一种实现方式，所述计算所述垂直同步信号的时间间隔，包括：按照第一预设频率对连续的两帧垂直同步信号进行计数，获得第一计数值；根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔。
在本申请实施例中，第一预设频率可以根据实际情况自行设置，例如第一预设频率可以为125MHZ。垂直同步信号的时间间隔可以为帧频频率。具体地，当接收到第一帧垂直同步信号时，以第一预设频率125MHZ开始计数，到第二帧垂直同步信号来临时停止计数，从而得到第一计数值。接着根据第一计数值和第一预设频率125MHZ计算垂直同步信号的时间间隔，从而得到帧频频率f。进一步地，垂直同步信号的时间间隔，即帧频频率f=1/（1/第一预设频率*第一计数值）=第一预设频率/第一计数值。
作为步骤102的一种实现方式，所述计算所述换子帧信号的时间间隔，包括：按照第二预设频率对连续的两帧换子帧信号进行计数，获得第二计数值；根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔。
在本申请实施例中，第二预设频率可以和第一预设频率一致，例如第二预设频率可以为125MHZ。需要说明的是，按照第二预设频率对连续的两帧换子帧信号进行计数是从第二帧的第一个换子帧信号开始。换子帧信号的时间间隔可以为子帧频率。具体地，当获取到第二帧的第一个换子帧信号时，以第二预设频率开始计数，当第二帧的第二个换子帧信号来临时停止计数，从而得到第二计数值。接着根据所述第二计数值和第二预设频率125MHZ计算换子帧信号的时间间隔，即子帧频率f 子=1/（1/第二预设频率*第二计数值）=第二预设频率/第二计数值。
在其中一些实施例中，作为步骤103的一种实现方式， 所述基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数的计算公式为：刷新分组数=【换子帧信号的时间间隔/垂直同步信号的时间间隔】，其中，【】表示取整。
在本申请实施例中，可以用n 新来表示刷新分组数。刷新分组数是通过换子帧信号的时间间隔和垂直同步信号的时间间隔确定的，从而使得刷新分组数能够跟随视频源的帧频的改变而改变。具体地，刷新分组数==【换子帧信号的时间间隔/垂直同步信号的时间间隔】，其中，【】表示取整。另外，由于换子帧信号的时间间隔为子帧频率f 子，垂直同步信号的时间间隔为帧频频率f，因此，刷新分组数N 新也可以表示为：n 新=【f 子/f】，【】表示取整，通过上述方式计算可得到刷新分组数。
步骤104，根据所述刷新分组数刷新显示图像。
在本申请实施例中，基于垂直同步信号的时间间隔和换子帧信号的时间间隔计算得到刷新分组数后，即可根据刷新分组数刷新显示图像。
在本申请实施例中，通过获取至少一个垂直同步信号和至少一个换子帧信号，然后分别计算垂直同步信号的时间间隔和换子帧信号的时间间隔，接着基于所述垂直同步信号的时间间隔和换子帧信号的时间间隔确定刷新分组数，最后根据刷新分组数刷新显示图像，由此，使得刷新分组数能够根据视频源的帧频自动进行调节，从而能够消除LED屏幕出现的闪烁和亮线问题。
便于理解本申请，下面将结合图2对本申请的一种刷新率自适应的调节方法进行说明。
如图2所示，第一预设频率和第二预设频率皆为125MHZ,当接收到第一个垂直同步信号后，第一计数器开始计数。当接收到第二个同步信号后，第一计数器停止计数，并从第一计数器中获得第一计数值vsync_timer,并可计算出一帧画面的频率为f=125M/vsync_timer。进一步地，当接收到垂直同步信号后，第二计数器清零并准备计数。等待第二帧的第一个换子帧信号到来时，开始计数，直至第二帧的第二个换子帧到来时，停止计数，并获得第二计数器中的第二计数值frame_timer，并可计算出一幅子帧的频率为f 子 = 125M/frame_timer。当获得f和f 子后，根据刷新分组数计算公式n 新=【f 子/f】，得出n 新，并将下一帧的刷新分组数n改为n 新，LED显示屏根据新的刷新分组数n 新进行刷新。
在传统技术中，LED显示屏的刷新分组数会出现和视频源帧频不匹配的情况：当当1/f远远大于T n时，即当视频源一帧的时间远远大于送完n组刷新分组数所需的时间时，会导致送完n组刷新分组数后，LED显示屏不再点亮任何灯珠，屏幕显示为黑屏，使得人眼观看LED显示屏时，屏幕闪烁感严重。当1/f略小于T n时，最后一组刷新分组不能完全送完，导致屏幕存在亮线。通过本申请的刷新率自适应的调节方法，如图3所示，当视频源一帧的时间T远远大于所有子帧时间+黑屏时间时，即当黑屏时间1大于一组子帧时间时，可以将黑屏时间缩短，并补上更多组子帧，从而能够解决屏幕闪烁的问题。另外，如图4所示，当视频源一帧的时间T小于等于所有子帧时间之和时，即当黑屏时间1≤一组子帧时间时，根据上述刷新率自适应的调节方法，最后一组刷新分组不再发送，从而能够有效解决亮线的问题。
相应地，本申请实施例还提供了一种刷新率自适应的调节装置，如图5所示，装置500包括：
获取模块501，用于获取至少一个垂直同步信号和至少一个换子帧信号；
第一计算模块502，用于分别计算所述换子帧信号和所述垂直同步信号的时间间隔；
第二计算模块503，用于基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数；
刷新模块504，用于根据所述刷新分组数刷新显示图像。
本申请实施例提供的一种刷新率自适应的调节装置，通过获取模块获取至少一个垂直同步信号和至少一个换子帧信号；然后通过第一计算模块分别计算所述换子帧信号和所述垂直同步信号的时间间隔；接着通过第二计算模块基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数；最后使用刷新模块根据所述刷新分组数刷新显示图像，使得刷新分组数能够根据视频源的帧频自动进行调节，从而能够消除LED屏幕出现的闪烁和亮线问题。
可选地，在装置的其他实施例中，第一计算模块502具体用：
按照第一预设频率对连续的两帧垂直同步信号进行计数，获得第一计数值；
根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔；
按照第二预设频率对连续的两帧换子帧信号进行计数，获得第二计数值；
根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔。
可选地，在装置的其他实施例中，所述根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔的计算公式为：
垂直同步信号的时间间隔=第一预设频率/第一计数值。
可选地，在装置的其他实施例中，所述根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔的计算公式为：
换子帧信号的时间间隔=第二预设频率/第二计数值。
可选地，在装置的其他实施例中，所述基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数的计算公式为：
刷新分组数=【换子帧信号的时间间隔/垂直同步信号的时间间隔】
其中，【】表示取整。
需要说明的是，上述一种刷新率自适应的调节装置可执行本申请实施例所提供的一种刷新率自适应的调节方法相应的功能模块和有益效果。未在一种刷新率自适应的调节装置实施例中详尽描述的技术细节，可参见本申请实施例提供的一种刷新率自适应的调节方法。
图6是本申请实施例提供的LED显示设备的硬件结构示意图，如图6所示，LED显示设备600包括：
一个或者多个处理器601以及存储器602，图6中以一个处理器为例。
处理器601和存储器602可以通过总线或者其他方式连接，图6中以通过总线连接为例。
存储器602作为一种非易失性计算机可读存储介质，可用于存储非易失性软件程序、非易失性计算机可执行程序以及模块，如本申请实施例中刷新率自适应的调节方法对应的程序指令/模块。处理器601通过运行存储在存储器602中的非失易性软件程序、指令以及模块，从而执行LED显示设备的各种功能应用以及数据处理，即实现上述方法实施例的刷新率自适应的调节方法。
存储器602可以包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需要的应用程序；存储数据区可存储根据刷新率自适应的调节装置的使用所创建的数据等。此外，存储器602可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实施例中，存储器602可选包括相对于处理器601远程设置的存储器，这些远程存储器可以通过网络连接至刷新率自适应的调节装置。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供了一种非易失性计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，该计算机可执行指令被一个或者多处理器执行时，可使得上述一个或者多个处理器可执行上述任意方法实施例中的刷新率自适应的调节方法。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
通过以上的实施方式的描述，本领域普通技术人员可以清楚地了解到各实施方式可借助软件加通用硬件平台的方式来实现，当然也可以通过硬件。本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory, ROM)或随机存储记忆体(RandomAccessMemory, RAM)等。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；在本申请的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，步骤可以以任意顺序实现，并存在如上所述的本申请的不同方面的许多其它变化，为了简明，它们没有在细节中提供；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (10)

  1. 一种刷新率自适应的调节方法，用于LED显示设备，其特征在于，所述方法包括：
    获取至少一个垂直同步信号和至少一个换子帧信号；
    分别计算所述换子帧信号和所述垂直同步信号的时间间隔；
    基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数；
    根据所述刷新分组数刷新显示图像。
  2. 根据权利要求1所述的方法，其特征在于，所述计算所述垂直同步信号的时间间隔，包括：
    按照第一预设频率对连续的两帧垂直同步信号进行计数，获得第一计数值；
    根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔。
  3. 根据权利要求2所述的方法，其特征在于，所述计算所述换子帧信号的时间间隔，包括：
    按照第二预设频率对连续的两帧换子帧信号进行计数，获得第二计数值；
    根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔。
  4. 根据权利要求2所述的方法，其特征在于，所述根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔的计算公式为：
    垂直同步信号的时间间隔=第一预设频率/第一计数值。
  5. 根据权利要求3所述的方法，其特征在于，所述根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔的计算公式为：
    换子帧信号的时间间隔=第二预设频率/第二计数值。
  6. 根据权利要求1所述的方法，其特征在于，所述基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数的计算公式为：
    刷新分组数=【换子帧信号的时间间隔/垂直同步信号的时间间隔】
    其中，【】表示取整。
  7. 一种刷新率自适应的调节装置，用于LED显示设备，其特征在于，包括：
    获取模块，用于获取至少一个垂直同步信号和至少一个换子帧信号；
    第一计算模块，用于分别计算所述换子帧信号和所述垂直同步信号的时间间隔；
    第二计算模块，用于基于所述垂直同步信号的时间间隔和所述换子帧信号的时间间隔确定刷新分组数；
    刷新模块，用于根据所述刷新分组数刷新显示图像。
  8. 根据权利要求7所述的装置，其特征在于，所述第一计算模块具体用于：
    按照第一预设频率对连续的两帧垂直同步信号进行计数，获得第一计数值；
    根据所述第一计数值和所述第一预设频率确定垂直同步信号的时间间隔；
    按照第二预设频率对连续的两帧换子帧信号进行计数，获得第二计数值；
    根据所述第二计数值和所述第二预设频率确定换子帧信号的时间间隔。
  9. 一种LED显示设备，其特征在于，包括：
    至少一个处理器；以及，
    与所述至少一个处理器通信连接的存储器；其中，
    所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行权利要求1-6任一项所述的方法。
  10. 一种非易失性计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，当所述计算机可执行指令被处理器所执行时，使所述处理器执行如权利要求1-6任一项所述的方法。
PCT/CN2022/073012 2021-12-04 2022-01-20 一种刷新率自适应的调节方法、装置及led显示设备 WO2023097879A1 (zh)

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