WO2024031212A1 - 一种显示过驱控制方法、装置、终端设备及存储介质 - Google Patents

一种显示过驱控制方法、装置、终端设备及存储介质 Download PDF

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Publication number
WO2024031212A1
WO2024031212A1 PCT/CN2022/110751 CN2022110751W WO2024031212A1 WO 2024031212 A1 WO2024031212 A1 WO 2024031212A1 CN 2022110751 W CN2022110751 W CN 2022110751W WO 2024031212 A1 WO2024031212 A1 WO 2024031212A1
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Prior art keywords
overdrive
partition
pixel signal
display screen
display
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PCT/CN2022/110751
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English (en)
French (fr)
Inventor
陈奕鑫
谢仁礼
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深圳Tcl新技术有限公司
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Priority to PCT/CN2022/110751 priority Critical patent/WO2024031212A1/zh
Publication of WO2024031212A1 publication Critical patent/WO2024031212A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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

Definitions

  • the present invention relates to the field of display technology, and in particular to a display overdrive control method, device, electronic equipment and storage medium.
  • Overdrive technology is a driving technology in the field of display technology that can improve the display effect of display devices without increasing hardware costs. It is understandable that heat is generated during the operation of the display device, and the use of overdrive technology can cause the heat in the display device to accumulate faster.
  • the main method used in applying overdrive technology is to use extreme detection images to test a set of overdrive parameters that the display device can load before the display device is put on the market. This is used when the user uses the display device.
  • Set overdrive parameters for overdrive control is used when the user uses the display device.
  • a set of extreme quantized parameters are used to control the entire display device. The accuracy of the overdrive control is low, which affects the overdrive effect of the display device.
  • Embodiments of the present invention provide a display overdrive control method, device, electronic device and storage medium, which can increase the overdrive duration and improve the overdrive effect of the display device without changing the hardware structure of the display device.
  • An embodiment of the present invention provides a display overdrive control method, which includes:
  • overdrive control reference parameters backlight control information and pixel signal statistical values, predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed;
  • pixel signal amplitude and overdrive coefficient predict the partition heat accumulation value of each display screen partition when displaying the image frame to be displayed
  • Overdrive control is performed on the display device through the target overdrive coefficient corresponding to each display screen partition.
  • an embodiment of the present invention provides a display overdrive control device, including:
  • a parameter acquisition unit used to acquire overdrive control reference parameters, backlight control information, and pixel signal statistical values of multiple virtual partitions of the image frame to be displayed for multiple display screen partitions of the display device;
  • An amplitude prediction unit configured to predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed based on the overdrive control reference parameters, backlight control information and pixel signal statistical values;
  • a coefficient determination unit configured to determine an overdrive coefficient corresponding to the pixel signal amplitude from the reference overdrive coefficient based on the preset mapping relationship between the pixel signal amplitude and the reference overdrive coefficient and the pixel signal amplitude;
  • a heat accumulation value prediction unit configured to predict the partition heat accumulation value of each display screen partition when the image frame to be displayed is displayed based on the overdrive control reference parameter, pixel signal amplitude and overdrive coefficient;
  • a coefficient correction unit configured to perform thermal control correction on the overdrive coefficient of each display screen partition according to the partition heat accumulation value and the overdrive control reference parameter, to obtain the target overdrive coefficient of each of the display screen partitions;
  • An overdrive control unit is configured to perform overdrive control on the display device through the target overdrive coefficient corresponding to each display screen partition.
  • the display overdrive control device provided by the embodiment of the present invention also includes a statistical unit for acquiring an image frame to be displayed, and performing partition processing on the image frame to be displayed to obtain multiple virtual frames corresponding to the image frame to be displayed. Partition;
  • the average pixel signal value and the maximum value of the pixel signal of each virtual partition are calculated as pixel signal statistical values.
  • the statistical unit is used to obtain image frames to be displayed
  • uneven partition processing is performed on the image frame to be displayed to obtain multiple virtual partitions corresponding to the image frame to be displayed.
  • the amplitude prediction unit is configured to determine each of the display screen partition positions according to the display screen partition position of each of the display screen partitions indicated by the overdrive control reference parameter and the virtual partition position corresponding to each of the virtual partitions.
  • the initial pixel signal amplitude is less than the preset amplitude threshold, according to the initial pixel signal amplitude, overdrive control reference parameters and backlight control information, predict the pixels of each display screen partition when displaying the image frame to be displayed. signal amplitude.
  • the display overdrive control device provided by the embodiment of the present invention also includes a mapping table acquisition unit for acquiring a preset pixel signal mapping table.
  • the pixel signal mapping table includes pixel signal statistical values and pixel signal mapping functions. the correspondence between them;
  • the amplitude prediction unit is configured to determine a target pixel signal mapping function corresponding to each pixel signal statistical value based on the pixel signal statistical value of each virtual partition in each virtual partition set and the pixel signal mapping table;
  • Each of the pixel signal statistical values is mapped through the target pixel signal mapping function to obtain the pixel signal mapping value of each of the virtual partitions;
  • the initial pixel signal amplitude corresponding to each of the display screen partitions is calculated based on each of the pixel signal mapping values.
  • the pixel signal statistical value includes a pixel signal average value
  • the amplitude prediction unit is used to map each pixel signal average value through the target pixel signal mapping function to obtain the average value of each virtual partition.
  • the overdrive control reference parameter includes the maximum overdrive current
  • the amplitude prediction unit is used to multiply the initial pixel signal amplitude and the backlight control information to calculate the backlight pixel signal of the display screen partition. amplitude;
  • the pixel signal statistical value includes the maximum value of the pixel signal.
  • the display overdrive control device provided by the embodiment of the present invention also includes a maximum amplitude prediction unit for controlling the reference parameter and the maximum value of the pixel signal according to the overdrive control reference parameter. Predicting the maximum amplitude of the pixel signal of each display screen partition when displaying the image frame to be displayed;
  • the coefficient determination unit is configured to establish an overdrive coefficient search index based on the maximum amplitude of the pixel signal and the amplitude of the pixel signal;
  • the overdrive coefficient is found from the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient.
  • the overdrive control reference parameters of each of the display screen partitions include the overdrive duration reference, the minimum average signal amplitude and the partition overdrive weight of each of the display screen partitions;
  • the coefficient correction unit is configured to calculate, for each of the display screen partitions, the product of the overdrive duration reference, the minimum average signal amplitude, and the partition overdrive weight of each of the display screen partitions to obtain each The upper limit of heat accumulation corresponding to the display screen partition;
  • the reduced overdrive coefficient of each overheated display screen partition is used as the target overdrive coefficient of each overheated display screen partition.
  • the display overdrive control device provided by the embodiment of the present invention also includes an adjacent coefficient correction unit, configured to at least reduce the positional adjacency relationship with the overheated display screen partition based on the position information of the overheated display screen partition.
  • an adjacent coefficient correction unit configured to at least reduce the positional adjacency relationship with the overheated display screen partition based on the position information of the overheated display screen partition.
  • the reduced overdrive coefficient of each adjacent display screen partition is used as the target overdrive coefficient of each adjacent display screen partition.
  • the overdrive control reference parameters of each display screen partition include the overheat protection time reference, the minimum average signal amplitude and the partition overdrive protection weight of each display screen partition.
  • the display overdrive provided by the embodiment of the present invention
  • the control device also includes an overheat protection unit, configured to calculate, for each of the display screen partitions, the product of the overheat protection time reference, the minimum average signal amplitude, and the partition overdrive protection weight for each of the display screen partitions, Obtain the thermal protection threshold corresponding to each of the display screen partitions;
  • the display screen partition For the display screen partition whose real partition heat accumulation value is not less than the heat protection threshold, the display screen partition is controlled not to perform overdrive display.
  • the overdrive control reference parameters include a maximum overdrive drive current
  • the heat accumulation value prediction unit is configured to based on the maximum overdrive drive current, pixel signal amplitude and overdrive in the overdrive control reference parameters. Coefficient, predicting the partition heat increment value of each display screen partition when displaying the image frame to be displayed;
  • the partition heat cumulative value of each display screen partition is calculated when the image frame to be displayed is displayed.
  • the display overdrive control device provided by the embodiment of the present invention also includes a heat accumulation value update unit, configured to detect the current real partition heat accumulation value of each display screen partition when displaying the image frame to be displayed;
  • the real partition heat accumulation value is used as the new historical heat accumulation value of each display screen partition.
  • the parameter acquisition unit is used to acquire overdrive control reference parameters of multiple display screen partitions of the display device and image frames to be displayed;
  • embodiments of the present invention also provide an electronic device, including a memory and a processor; the memory stores application programs, and the processor is used to run the application programs in the memory to execute the tasks provided by the embodiments of the present invention. Either shows the steps in the overdrive control method.
  • embodiments of the present invention also provide a computer-readable storage medium that stores a plurality of instructions, and the instructions are suitable for loading by the processor to execute any of the instructions provided by the embodiments of the present invention.
  • a step in an overdrive control method is shown.
  • embodiments of the present invention also provide a computer program product, including a computer program or instructions.
  • the steps in any of the display overdrive control methods provided by the embodiments of the present invention are implemented. .
  • the overdrive control reference parameters, backlight control information and pixel signal statistical values of multiple virtual partitions of the image frame to be displayed can be obtained for multiple display screen partitions of the display device.
  • Drive control reference parameters, backlight control information and pixel signal statistical values predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed, based on the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient As well as the pixel signal amplitude, the overdrive coefficient corresponding to the pixel signal amplitude is determined from the reference overdrive coefficient.
  • the overdrive coefficient of each display partition is corrected by heat control to obtain the target overdrive coefficient of each display partition.
  • the target overdrive coefficient corresponding to each display screen partition performs overdrive control on the display device; because in the embodiment of the present invention, the display screen of the display device is partitioned, and the heat accumulation of each display screen partition is dynamically monitored.
  • the overdrive duration can be increased and the overdrive effect of the display device can be improved without changing the hardware structure of the display device.
  • Figure 1 is a schematic diagram of a scene showing an overdrive control method provided by an embodiment of the present invention
  • Figure 2 is a flow chart of a display overdrive control method provided by an embodiment of the present invention.
  • Figure 3 is a schematic diagram of a display screen partition provided by an embodiment of the present invention.
  • Figure 4 is a schematic diagram of the correspondence between backlight control information and display screen partitions provided by an embodiment of the present invention.
  • Figure 5 is a schematic diagram of logical calculation provided by the embodiment of the present invention.
  • Figure 6 is a schematic flowchart showing an overdrive control process provided by an embodiment of the present invention.
  • Figure 7 is a schematic structural diagram of a display overdrive control device provided by an embodiment of the present invention.
  • Figure 8 is another structural schematic diagram of a display overdrive control device provided by an embodiment of the present invention.
  • Figure 9 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.
  • Embodiments of the present invention provide a display overdrive control method, device, electronic equipment and computer-readable storage medium. Specifically, embodiments of the present invention provide a display overdrive control method suitable for a display overdrive control device, and the display overdrive control device can be integrated in an electronic device.
  • the electronic device may be a terminal or other equipment, including but not limited to mobile terminals and fixed terminals.
  • mobile terminals include but are not limited to smartphones, smart watches, tablets, laptops, smart vehicles, etc.
  • fixed terminals include but are not limited to Desktop computers, smart TVs, etc.
  • the electronic device can also be a server or other equipment.
  • the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. It can also provide cloud services, cloud databases, cloud computing, and cloud functions. , cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network, content distribution network), and cloud servers for basic cloud computing services such as big data and artificial intelligence platforms, but not Limited to this.
  • the display overdrive control method in the embodiment of the present invention can be implemented by the server, or can be implemented by both the terminal and the server.
  • the display overdrive control system provided by the embodiment of the present invention includes a display device 10 and a server 20; the terminal 10 and the server 20 are connected through a network, such as a wired or wireless network connection, etc., where the server 20 may exist as an electronic device that sends data to be displayed to the terminal 10 .
  • the server 20 may be used to send image frames to be displayed to the terminal 10 .
  • the terminal 10 can be used to obtain the overdrive control reference parameters and backlight control information of multiple display screen partitions of the terminal 10 and the pixel signal statistical values of multiple virtual partitions of the image frame to be displayed.
  • the overdrive control reference parameters and backlight control Information and pixel signal statistical values predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed, based on the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient and the pixel signal amplitude, from the reference overdrive
  • the overdrive coefficient corresponding to the pixel signal amplitude is determined in the coefficient.
  • the cumulative heat value of each display screen partition is predicted when the image frame to be displayed is displayed.
  • the cumulative heat value of the partition Perform heat control correction on the overdrive coefficient of each display partition with the overdrive control reference parameters to obtain the target overdrive coefficient of each display partition.
  • the terminal 10 can perform overdrive control on the display device through the target overdrive coefficient corresponding to each display screen partition.
  • the data to be displayed provided by the server 20, such as the image frames to be displayed can also be directly stored in the terminal 10, which is not limited in the embodiment of the present invention.
  • the step of determining the target overdrive coefficient of each display screen partition performed by the terminal 10 may also be performed by the server 20 .
  • the server 20 can send the target overdrive coefficient to the terminal 10 so that the terminal 10 performs overdrive control of the display device through the target overdrive coefficient corresponding to each display screen partition.
  • the embodiment of the present invention will be described from the perspective of a display overdrive control device.
  • the display overdrive control device may be integrated in a server and/or terminal.
  • the specific process of the display overdrive control method in this embodiment can be as follows:
  • the display device is an electronic device with a display function, such as a TV, a tablet, a laptop, a smartphone, a smart watch, a smart car, etc.
  • the display screen partition is to divide the display screen area of the display device to obtain the display range.
  • a display screen area can be divided into 4 rows and 4 columns, a total of 16 display screen partitions.
  • OLED organic light-emitting diode, organic electroluminescence display
  • the corresponding pixel positions of the image frame to be displayed in the display area can be used as display screen partitions, and so on.
  • the embodiment of the present invention does not limit the partitioning method and the number of partitions of the display screen.
  • the overdrive control reference parameters are parameters set according to the display capability of the display device.
  • the overdrive control reference parameters may include, but are not limited to, sub-parameters such as minimum average pixel signal amplitude, minimum drive current, maximum drive current, maximum overdrive drive current, overdrive duration benchmark, overheat protection time benchmark, etc.
  • one overdrive control reference parameter corresponds to one display screen partition.
  • one overdrive control reference parameter can correspond to multiple or all display partitions.
  • the overdrive control reference parameters of each display partition can be the same, or there can be at least a different subparameter.
  • the overdrive control reference parameter can describe the location, number, etc. of its corresponding several display screen partitions.
  • the overdrive control reference parameter can include information about the display screen.
  • the number of horizontal division areas, the number of vertical division areas, etc. of the area, or the overdrive control reference parameters may include the position or number of the corresponding display screen partition, etc.
  • the backlight control information may be information calculated based on the image content corresponding to the image frame to be displayed in the display screen partition, and is used for backlight control when displaying the image frame to be displayed.
  • the backlight control information corresponding to different display partitions may be the same or different.
  • step 201 may specifically include:
  • the image frame to be displayed is divided into blocks to obtain image blocks that match the display screen partition;
  • the backlight control information is obtained based on the pixel signal processing of each image block
  • the display device has 16 display screen partitions.
  • the image frame to be displayed may be divided into 16 image blocks corresponding to the display screen partitions as shown in 401 in Figure 4 .
  • the backlight control information of each display screen partition as shown in 402 in Figure 4 can be obtained.
  • the image frame to be displayed may be an image composed of information to be displayed on the display screen.
  • the image frame to be displayed may be a video frame of a picture or video to be played through the display screen, or the image frame to be displayed may be an image frame composed of an application program interface and the default background of the display screen, and so on.
  • the virtual partition is an area obtained by dividing the image frame to be displayed. It can be understood that the division of virtual partitions does not involve actually cutting the image frame to be displayed into several sub-images, but only uses an area composed of certain pixels in the image frame to be displayed as a virtual partition.
  • the number of virtual partitions will be greater than the number of display partitions.
  • the virtual partitions can be divided evenly.
  • the virtual partitions can be divided evenly into m rows and n columns of the entire image frame to be displayed.
  • the specific values of m and n can be given by Technicians set it in advance, or automatically adjust m and n according to the contents of different image frames to be displayed when dividing virtual partitions.
  • the values of m and n can be set is larger, for image frames to be displayed with simple content (for example, if the proportion of continuous solid color areas in the image frame to be displayed is greater than the preset area threshold, the content can be considered simple), the values of m and n can be appropriately reduced.
  • the division of virtual partitions can be to divide the entire image frame to be displayed evenly into 108 rows and 192 columns.
  • the image frame to be displayed may also be divided into uneven virtual partitions.
  • the step "obtain the image frame to be displayed, and perform partition processing on the image frame to be displayed to obtain multiple virtual partitions corresponding to the image frame to be displayed" may include:
  • At least two virtual partitions have different numbers of corresponding pixels.
  • the number of virtual partitions for each area may be determined based on the image content of each display screen partition in the area corresponding to the image frame to be displayed. For example, the corresponding area of a certain display screen partition in the image frame to be displayed can be divided into h rows and t columns. For content-rich areas (for example, object detection can be performed on this area, and the number of detected objects is greater than the preset threshold The area can be considered to be rich in content) The values of h and t can be set larger. For areas with simple content (for example, the proportion of continuous solid color parts in the area is greater than the preset area threshold, the content can be considered simple). Adjust the values of h and t appropriately.
  • the pixel signal statistical value may be calculated in advance on the display device or a remote device such as a server connected to the display device before performing overdrive control based on the image frame to be displayed on the image frame to be displayed. That is to say, before the step "obtaining overdrive control reference parameters, backlight control information, and pixel signal statistical values of multiple virtual partitions of the image frame to be displayed for multiple display screen partitions of the display device", the display provided by the embodiment of the present invention Overdrive control methods can also include:
  • the average value of the pixel signal and the maximum value of the pixel signal of each virtual partition are calculated as the pixel signal statistical value.
  • the pixel signal statistical value is data obtained by statistical processing based on the pixel signal corresponding to each pixel in each virtual partition.
  • the pixel signal can be understood as the pixel color signal corresponding to each pixel point.
  • the pixel signal can be represented by RGB color space, YUV color space, YIQ color space and other modes.
  • Precalculating pixel signal statistical values can speed up the overdrive control of the display device based on the image frame to be displayed, and reduce the computing pressure of the display device. For example, when playing a video, the display device can pre-calculate and store the pixel signal statistical values of certain image frames to be displayed that have not yet been displayed, so that they can be quickly obtained when the pixel signal statistical values of the image frames to be displayed are needed.
  • the display device when it needs the pixel signal statistical value of the image frame to be displayed, it can send a request for obtaining the pixel signal statistical value to the remote device, triggering the remote device to send the pixel signal statistical value to the display device.
  • the pixel signal statistical value can also be calculated in real time by the display device during overdrive control based on the image frame to be displayed. This is not limited in the embodiment of the present invention.
  • the average pixel signal value in the pixel signal statistical value can be obtained by calculating the average value of the pixel signals of each pixel point in the virtual partition, and the maximum value of the pixel signal in the pixel signal statistical value can be obtained by calculating the average value of the pixel signal in each pixel point in the virtual partition.
  • the pixel signal is obtained by taking the maximum value.
  • the average pixel signal can be calculated as follows:
  • the maximum value of the pixel signal can be calculated as follows:
  • apl_i is the average value of the pixel signal of the i-th virtual partition
  • a_max_i is the maximum value of the pixel signal of the i-th virtual partition.
  • s1, s2,..., s400 respectively represent the pixel signals of the 1st to 400th pixels in the i-th virtual partition.
  • overdrive control reference parameters backlight control information and pixel signal statistical values, predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed.
  • the amplitude of the pixel signal in the display partition when displaying the image frame to be displayed will affect the overdrive effect.
  • step 202 may specifically include:
  • the pixel signal amplitude of each display screen partition is predicted when the image frame to be displayed is displayed.
  • the initial pixel signal amplitude is the amplitude that the display screen partition can reach when displaying the image frame to be displayed without over-driving the image frame to be displayed.
  • an amplified initial pixel signal amplitude can be calculated based on the backlight control information to be backlit for the display partition.
  • the overdrive control reference parameters include the maximum overdrive drive current, and the step is "based on the initial pixel signal amplitude, overdrive control reference parameters and backlight control information, predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed.” , which can include:
  • apl_k is the pixel signal amplitude of a display screen partition
  • apl_j is the initial pixel signal amplitude of the display screen partition
  • Bi_j is the backlight control information of the display screen partition
  • i_boost is the maximum overdrive current of this display partition.
  • the initial pixel signal amplitude of a display screen partition is not less than the amplitude threshold, it can be considered that the display screen partition does not have the conditions for further overdrive when displaying the image frame to be displayed. In this case, the initial pixel signal amplitude may not be used. Pixel signal amplitude is processed.
  • apl_j of a display partition is greater than apl_low (amplitude threshold). If it is greater, the display partition does not have the conditions for further overdrive and jumps directly to the next display partition; if it is less than, a new display partition is calculated. apl_k.
  • mapping relationship between the virtual partitions and the display partitions, and this mapping relationship mainly depends on how the virtual partitions are divided.
  • the mapping relationship can be based on the spatial position between the virtual partitions and the display screen partitions.
  • the division of virtual partitions can be to divide the entire image frame to be displayed evenly into 108 rows and 192 columns, and the display screen partitions are 16. At this time, one display screen partition can correspond to a total of 1296 virtual partitions of 27*48 .
  • the mapping relationship can also be that the virtual partitions and the display screen partitions are corresponding only by spatial position.
  • the display screen partition 1 corresponds to 4 virtual partitions
  • the display screen partition 1 corresponds to 4 virtual partitions
  • Partition 2 corresponds to 16 virtual partitions.
  • the pixel signal statistical values of multiple virtual partitions corresponding to the display partition can be converted by calling the corresponding calculation logic according to the different display partitions.
  • each display partition has a converted pixel signal statistical value.
  • the display overdrive control method provided by the embodiment of the present invention also includes:
  • Obtain a preset pixel signal mapping table which includes a correspondence between pixel signal statistical values and pixel signal mapping functions.
  • the pixel signal mapping table can be stored in the display device in advance.
  • the pixel signal mapping table may be in the form of a LUT (Look-Up-Table).
  • a LUT is essentially a RAM. After it writes the data into RAM in advance, every time a signal is input, it is equivalent to inputting an address to look up the table, find out the content corresponding to the address, and then output it.
  • the pixel signal mapping function can transform the pixel signal statistical value into another corresponding mapping value through certain transformations such as thresholding, inversion, binarization, contrast adjustment, linear transformation, etc.
  • the step "calculate the initial pixel signal amplitude corresponding to each display screen partition based on the pixel signal statistical value of each virtual partition in each virtual partition set" may specifically include:
  • the statistical value of each pixel signal is mapped through the target pixel signal mapping function to obtain the pixel signal mapping value of each virtual partition;
  • the initial pixel signal amplitude corresponding to each display screen partition is calculated based on the mapping value of each pixel signal.
  • FIG. 5 is a schematic diagram of a pixel signal mapping table.
  • Each number in the table can represent a mapping of a multiple of the number to the pixel signal statistical value of the corresponding virtual partition.
  • the pixel signal statistical value includes the average pixel signal
  • the step of "mapping each pixel signal statistical value through the target pixel signal mapping function to obtain the pixel signal mapping value of each virtual partition" may specifically include :
  • the average value of each pixel signal is mapped through the target pixel signal mapping function to obtain the average mapping value of the pixel signal of each virtual partition.
  • the step "calculate the initial pixel signal amplitude corresponding to each display screen partition based on the mapping value of each pixel signal” may include:
  • a display screen partition can correspond to a total of 1296 virtual partitions of 27*48.
  • the initial pixel signal amplitude of the display screen partition can be calculated through the following process:
  • apl_j is the initial pixel signal amplitude of the display partition
  • L_LUT is the pixel signal mapping table in Figure 5
  • L_LUT (1,1,1) represents the first virtual partition in the display partition
  • 48*27 is the display screen The number of virtual partitions corresponding to the partition.
  • the overdrive coefficient may be determined only based on the pixel signal amplitude. For example, the mapping relationship between the pixel signal amplitude and the reference overdrive coefficient only includes the reference overdrive coefficient corresponding to each pixel signal amplitude.
  • the overdrive coefficient may be determined based on the pixel signal amplitude and the maximum amplitude of the pixel signal.
  • the pixel signal statistical value includes the maximum value of the pixel signal.
  • the maximum amplitude of the pixel signal of each display screen partition is predicted when the image frame to be displayed is displayed.
  • the step "based on the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient and the pixel signal amplitude, determine the overdrive coefficient corresponding to the pixel signal amplitude from the reference overdrive coefficient" may specifically include:
  • the overdrive coefficient is found from the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient.
  • the pixel signal amplitude apl_k and the pixel signal maximum amplitude a_max_j can be used as index values, substituted into the preset mapping relationship between the pixel signal amplitude and the reference overdrive coefficient, and the overdrive coefficient can be found
  • A_k is the overdrive coefficient of the corresponding display partition.
  • the step "predict the maximum amplitude of the pixel signal of each display screen partition when displaying the image frame to be displayed based on the overdrive control reference parameters and the maximum value of the pixel signal” may specifically include:
  • the maximum amplitude of the pixel signal corresponding to each display partition is calculated.
  • the process of determining the virtual partition corresponding to the display screen partition is similar to the aforementioned process of calculating the initial pixel signal amplitude, and will not be described again in the embodiment of the present invention.
  • the step "based on the maximum value of the pixel signal of each virtual partition in each virtual partition set, calculate the maximum amplitude of the pixel signal corresponding to each display partition" includes:
  • the maximum value of each pixel signal is mapped through the target pixel signal mapping function to obtain the maximum mapping value of the pixel signal of each virtual partition;
  • the maximum amplitude of the pixel signal corresponding to each display screen partition is calculated based on the maximum mapping value of each pixel signal.
  • the pixel signal mapping table may include the correspondence between the pixel signal average value, the pixel signal maximum value, and the pixel signal mapping function.
  • the calculation process of the maximum mapping value of the pixel signal and the calculation process of the initial pixel signal amplitude may be performed simultaneously or non-simultaneously, and this is not limited in the embodiment of the present invention.
  • a display screen partition can correspond to a total of 1296 virtual partitions of 27*48.
  • the initial pixel signal amplitude of the display screen partition can be calculated through the following process:
  • a_max_j is the maximum amplitude of the pixel signal of the display partition
  • L_LUT is the pixel signal mapping table in Figure 5
  • L_LUT (1,1,1) represents the first virtual partition in the display partition
  • 48*27 is the display screen The number of virtual partitions corresponding to the partition.
  • pixel signal amplitude and overdrive coefficient predict the cumulative heat value of each display screen partition when displaying the image frame to be displayed.
  • the cumulative partition heat value can measure the accumulated heat generated by each display partition of the display device from the time it starts working to when the image frame to be displayed is displayed.
  • the partition heat accumulation value can be calculated by summing the heat accumulated in the historical work process and the heat generated in the process of displaying the image frame to be displayed. That is to say, the overdrive control reference parameter may include the maximum overdrive current, and step 204 may specifically include:
  • the partition heat accumulation value of each display screen partition is calculated when the image frame to be displayed is displayed.
  • partition heat increment value of each display partition can be calculated by the following formula:
  • P_k is the partition heat increment value of a display partition
  • apl_k is the pixel signal amplitude of the display partition
  • i_boost is the maximum overdrive current of the display partition
  • A_k is the overdrive coefficient of the display partition.
  • the historical heat accumulation value may be the heat accumulated during the historical working process of each display screen partition.
  • the current accumulated heat value of the display screen partition after each image frame to be displayed can be used as a new historical accumulated heat value. That is, the display overdrive control method provided by the embodiment of the present invention also includes:
  • the real partition heat accumulation value is used as the new historical heat accumulation value of each display partition.
  • the historical heat accumulation value may also be the current remaining undissipated heat in the display partition. That is, the step "obtaining the historical cumulative heat value of each display screen partition" may include:
  • the historical heat loss can be calculated by measuring the temperature sensor on the display screen, or can be estimated by the temperature of the environment around the display screen and the display screen temperature cultural data.
  • the embodiment of the present invention obtains the historical heat loss. The method is not limited.
  • the heat control correction of the overdrive coefficient may include amplifying or reducing the overdrive coefficient to control the heat generated during the overdrive display process.
  • the current overdrive coefficient is used for overdrive display, it may cause the display partition to overheat. At this time, the overdrive coefficient can be reduced to avoid overheating and protect the display.
  • the overdrive coefficient can be amplified to improve the effect of the overdrive display.
  • the overdrive state can be entered in advance. , increase the overdrive time, increase the overdrive voltage, etc.
  • the overdrive control reference parameters of each display screen partition include the overdrive duration reference of each display screen partition, the minimum average signal amplitude, and the partition overdrive weight.
  • Step 205 may specifically include:
  • each display partition calculate the product between the overdrive duration benchmark, the minimum average signal amplitude, and the partition overdrive weight of each display partition to obtain the upper limit of heat accumulation corresponding to each display partition;
  • the overheated display partition is reduced in overdrive coefficient, so that the overheated display partition is based on the reduced overdrive coefficient when overdriven display of the image frame to be displayed is obtained.
  • the cumulative heat value of the partition is not greater than the upper limit of cumulative heat;
  • the reduced overdrive coefficient of each overheated display partition is used as the target overdrive coefficient of each overheated display partition.
  • the overheated display screen partition is a display screen partition in which the cumulative heat value of the partition calculated when the image frame to be displayed is overdriven and displayed using the overdrive coefficient is greater than the upper limit of the cumulative heat.
  • the cumulative upper limit of heat is the upper limit of the heat that the display partition can withstand.
  • the upper limit of heat accumulation can be calculated by the following formula:
  • P1(k) is the upper limit of heat accumulation of the display partition
  • apl_low is the minimum average signal amplitude of the display partition
  • local_t0(k) is the partition overdrive weight of the display partition
  • t0 is the overdrive duration of the display partition. time base.
  • the overdrive coefficient A_k of the current display partition ie, the overheated display partition
  • the overdrive coefficient A_k of the current display partition is reduced to obtain the target overdrive coefficient.
  • the overdrive coefficient of the display partition adjacent to the overheated display partition can also be reduced.
  • the display overdrive control method provided by the embodiment of the present invention may also include:
  • the reduced overdrive coefficient of each adjacent display screen partition is used as the target overdrive coefficient of each adjacent display screen partition.
  • the specific processing of the overdrive coefficient of adjacent display screen partitions can be determined based on the predicted heat accumulation of the overheated display screen partition.
  • the overdrive coefficient of the adjacent display partition can be reduced to 0.95 times the original value. If the overdrive coefficient after reducing by 0.95 times is less than Bi_j/i_boost, set the reduced overdrive coefficient of the adjacent display partition to Bi_j /i_boost.
  • the over-driving coefficient may not be processed, and the over-driving coefficient may be directly used as the target process. coefficient.
  • the overdrive coefficient of the overdriven display partition can be amplified, so that the overdriven display partition treats the displayed image frame based on the amplified overdrive coefficient.
  • the new partition heat accumulation value obtained during overdrive display is not greater than the heat accumulation upper limit;
  • the amplified overdrive coefficient of each overheated display partition is used as the target overdrive coefficient of each overheated display partition.
  • the overdrive control reference parameters of each display screen partition include the overheat protection time reference of each display screen partition, the minimum average signal amplitude, and the partition overdrive protection weight.
  • the display overdrive control provided by embodiments of the present invention Drive control methods can also include:
  • each display partition calculate the product between the overheat protection time benchmark, the minimum average signal amplitude and the partition overdrive protection weight of each display partition to obtain the thermal protection threshold corresponding to each display partition;
  • the display partition is controlled not to perform overdrive display.
  • thermal protection threshold P2(k) can be calculated according to the following formula:
  • apl_low is the minimum average signal amplitude of the display partition
  • local_t1(k) is the partition overdrive protection weight of the display partition
  • t1 is the overheat protection time benchmark of the display partition.
  • the display device obtains overdrive control reference parameters (including the number of display screen partitions, index parameters of each display screen partition, etc.), backlight control information, and image frames to be displayed.
  • the overdrive precalculation module calculates a set of overdrive coefficients based on the overdrive control reference parameters, backlight control information, and signal amplitude statistics of the image frame to be displayed.
  • the heat pre-statistics module makes a pre-statistic of the heat accumulation of each display partition based on the overdrive coefficient calculated by the overdrive pre-calculation module and the overdrive control reference parameters, outputs a set of partition heat accumulation values, and outputs a set of partitions at the same time Heat gain value.
  • the overdrive decision module further corrects the overdrive coefficient of each display partition based on the accumulated heat value of the partition and the overdrive control reference parameters, and outputs the target overdrive coefficient of each display partition.
  • the partition backlight control module performs actual backlight control according to the target overdrive coefficient of each display partition.
  • the similarity between the current image frame to be displayed and the displayed image frame that has been overdriven can be compared. If the similarity between the image frame to be displayed and the displayed image frame is greater than the preset With a similar threshold, the target overdrive coefficient of each display screen partition when displaying the displayed image frame can be directly obtained, and the overdrive control of the image frame to be displayed can be performed based on the target overdrive coefficient.
  • the display overdrive control method provided by the embodiment of the present invention may also include:
  • the target overdrive coefficient of the displayed image frame corresponding to the maximum image similarity is used as the target overdrive coefficient of the image frame to be displayed;
  • the speed of overdrive control can be improved through similarity comparison between images.
  • embodiments of the present invention can obtain overdrive control reference parameters, backlight control information, and pixel signal statistical values of multiple virtual partitions of multiple display screen partitions of the display device.
  • the overdrive control reference parameters backlight control information and pixel signal statistical values, predict the pixel signal amplitude of each display partition when displaying the image frame to be displayed, based on the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient and the pixel signal amplitude, from Determine the overdrive coefficient corresponding to the pixel signal amplitude in the reference overdrive coefficient.
  • pixel signal amplitude and overdrive coefficient predict the partition heat accumulation value of each display partition when displaying the image frame to be displayed.
  • the heat accumulation value and the overdrive control reference parameters are used to perform heat control correction on the overdrive coefficient of each display partition, and the target overdrive coefficient of each display partition is obtained.
  • the display device is adjusted according to the target overdrive coefficient corresponding to each display partition.
  • Drive control since in the embodiment of the present invention, the display screen of the display device is partitioned, and the heat accumulation of each display screen partition is dynamically monitored to achieve dynamic control of the overdrive state of each display screen partition, therefore, It is possible to increase the overdrive duration and improve the overdrive effect of the display device without changing the hardware structure of the display device.
  • embodiments of the present invention also provide a display overdrive control device.
  • the device includes:
  • the parameter acquisition unit 701 may be used to acquire overdrive control reference parameters, backlight control information, and pixel signal statistical values of multiple virtual partitions of the image frame to be displayed for multiple display screen partitions of the display device;
  • the amplitude prediction unit 702 can be used to predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed based on the overdrive control reference parameters, backlight control information and pixel signal statistical values;
  • the coefficient determination unit 703 may be configured to determine the overdrive coefficient corresponding to the pixel signal amplitude from the reference overdrive coefficient based on the preset mapping relationship between the pixel signal amplitude and the reference overdrive coefficient and the pixel signal amplitude;
  • the heat accumulation value prediction unit 704 can be used to predict the partition heat accumulation value of each display screen partition when displaying the image frame to be displayed based on the overdrive control reference parameter, pixel signal amplitude and overdrive coefficient;
  • the coefficient correction unit 705 can be used to perform heat control correction on the overdrive coefficient of each display screen partition according to the partition heat accumulation value and the overdrive control reference parameter, so as to obtain the target overdrive coefficient of each display screen partition;
  • the overdrive control unit 706 may be used to perform overdrive control on the display device through the target overdrive coefficient corresponding to each display screen partition.
  • the display overdrive control device provided by the embodiment of the present invention can also include a statistics unit 707, which can be used to obtain the image frame to be displayed and perform partitioning processing on the image frame to be displayed. Obtain multiple virtual partitions corresponding to the image frame to be displayed;
  • the average value of the pixel signal and the maximum value of the pixel signal of each virtual partition are calculated as the pixel signal statistical value.
  • the statistics unit 707 can be used to obtain image frames to be displayed
  • the amplitude prediction unit 702 may be used to determine each display screen partition according to the display screen partition position of each display screen partition indicated by the overdrive control reference parameter and the virtual partition position corresponding to each virtual partition. The corresponding set of virtual partitions;
  • the pixel signal amplitude of each display screen partition is predicted when the image frame to be displayed is displayed.
  • the display overdrive control device may also include a mapping table acquisition unit, which may be used to acquire a preset pixel signal mapping table.
  • the pixel signal mapping table may include pixel signal statistics. The correspondence between the value and the pixel signal mapping function;
  • the amplitude prediction unit 702 may be configured to determine the target pixel signal mapping function corresponding to each pixel signal statistical value based on the pixel signal statistical value of each virtual partition in each virtual partition set and the pixel signal mapping table;
  • the statistical value of each pixel signal is mapped through the target pixel signal mapping function to obtain the pixel signal mapping value of each virtual partition;
  • the initial pixel signal amplitude corresponding to each display screen partition is calculated based on the mapping value of each pixel signal.
  • the pixel signal statistical value may include the average value of the pixel signal
  • the amplitude prediction unit 702 may be used to map the average value of each pixel signal through the target pixel signal mapping function to obtain the pixel signal of each virtual partition. average mapping value;
  • the overdrive control reference parameter may include the maximum overdrive current.
  • the amplitude prediction unit 702 may be used to multiply the initial pixel signal amplitude and the backlight control information to calculate the backlight pixel signal of the display screen partition. amplitude;
  • the pixel signal statistical value may include the maximum value of the pixel signal.
  • the display overdrive control device provided by the embodiment of the present invention may also include a maximum amplitude prediction unit 708, which may be used to control the reference parameters according to the overdrive and The maximum value of the pixel signal, predicting the maximum amplitude of the pixel signal of each display screen partition when displaying the image frame to be displayed;
  • the coefficient determination unit 703 can be used to establish an overdrive coefficient search index based on the maximum amplitude of the pixel signal and the amplitude of the pixel signal;
  • the overdrive coefficient is found from the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient.
  • the overdrive control reference parameters of each display screen partition may include the overdrive duration reference, the minimum average signal amplitude, and the partition overdrive weight of each display screen partition;
  • the coefficient correction unit 705 can be used to calculate the product of the overdrive duration reference, the minimum average signal amplitude, and the overdrive weight of each display partition for each display partition, and obtain the heat corresponding to each display partition. Accumulated upper limit;
  • the overheated display partition is reduced in overdrive coefficient, so that the overheated display partition is based on the reduced overdrive coefficient when overdriven display of the image frame to be displayed is obtained.
  • the cumulative heat value of the partition is not greater than the upper limit of cumulative heat;
  • the reduced overdrive coefficient of each overheated display partition is used as the target overdrive coefficient of each overheated display partition.
  • the display overdrive control device provided by the embodiment of the present invention can also include an adjacent coefficient correction unit 709, which can be used to at least reduce the presence of overheated display partitions based on the location information of the overheated display partition.
  • the reduced overdrive coefficient of each adjacent display screen partition is used as the target overdrive coefficient of each adjacent display screen partition.
  • the overdrive control reference parameters of each display screen partition may include the overheat protection time reference of each display screen partition, the minimum average signal amplitude, and the partition overdrive protection weight.
  • the display provided by the embodiment of the present invention may also include an overheat protection unit 710, which may be used to calculate the product of the overheat protection time reference of each display partition, the minimum average signal amplitude, and the partition overdrive protection weight for each display partition, to obtain The thermal protection threshold corresponding to each display partition;
  • the display partition is controlled not to perform overdrive display.
  • the overdrive control reference parameters may include the maximum overdrive drive current
  • the heat accumulation value prediction unit 704 may be configured to be based on the maximum overdrive drive current, pixel signal amplitude, and Overdrive coefficient, predicts the partition heat increment value of each display partition when displaying the image frame to be displayed;
  • the partition heat accumulation value of each display screen partition is calculated when the image frame to be displayed is displayed.
  • the display overdrive control device may also include a heat accumulation value update unit, which may be used to detect the current real partition heat of each display screen partition when displaying the image frame to be displayed. Cumulative value;
  • the real partition heat accumulation value is used as the new historical heat accumulation value of each display partition.
  • the parameter acquisition unit 701 may be used to acquire the overdrive control reference parameters of multiple display screen partitions of the display device and the image frames to be displayed;
  • the image frame to be displayed is divided into blocks to obtain image blocks that match the display screen partition;
  • the backlight control information is obtained based on the pixel signal processing of each image block
  • the overdrive control reference parameters of multiple display screen partitions of the display device, the backlight control information, and the pixel signal statistical values of multiple virtual partitions of the image frame to be displayed can be obtained.
  • the overdrive Control reference parameters, backlight control information and pixel signal statistical values predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed, based on the mapping relationship between the preset pixel signal amplitude and the reference overdrive coefficient and the pixel signal Amplitude, determine the overdrive coefficient corresponding to the pixel signal amplitude from the reference overdrive coefficient, and predict the partition heat accumulation value of each display partition when displaying the image frame to be displayed based on the overdrive control reference parameters, pixel signal amplitude and overdrive coefficient.
  • the device performs overdrive control; because in the embodiment of the present invention, the display screen of the display device is partitioned, and the heat accumulation of each display partition is dynamically monitored to achieve dynamic control of the overdrive state of each display partition. , therefore, the overdrive duration can be increased and the overdrive effect of the display device can be improved without changing the hardware structure of the display device.
  • an embodiment of the present invention also provides an electronic device, which can be a terminal or a server, etc., as shown in Figure 9, which shows a schematic structural diagram of the electronic device involved in the embodiment of the present invention. Specifically, :
  • the electronic device may include a radio frequency (RF) circuit 901, a memory 902 including one or more computer-readable storage media, an input unit 903, a display unit 904, a sensor 905, an audio circuit 906, a wireless fidelity (WiFi) ,Wireless Fidelity) module 907, a processor 908 including one or more processing cores, a power supply 909 and other components.
  • RF radio frequency
  • the RF circuit 901 can be used to receive and send information or signals during a call. In particular, after receiving the downlink information of the base station, it is handed over to one or more processors 908 for processing; in addition, the uplink data is sent to the base station. .
  • the RF circuit 901 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a low noise amplifier (LNA, Low Noise Amplifier), duplexer, etc.
  • SIM Subscriber Identity Module
  • RF circuit 901 can communicate with networks and other devices through wireless communications.
  • Wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM, Global System of Mobile communication), General Packet Radio Service (GPRS, General Packet Radio Service), Code Division Multiple Access (CDMA, Code Division Multiple Access), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), Long Term Evolution (LTE, Long Term Evolution), email, Short Messaging Service (SMS, Short Messaging Service), etc.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • SMS Short Messaging Service
  • the memory 902 can be used to store software programs and modules.
  • the processor 908 executes various functional applications and data processing by running the software programs and modules stored in the memory 902 .
  • the memory 902 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the storage data area may store a program based on Data created by the use of electronic devices (such as audio data, phone books, etc.), etc.
  • memory 902 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 902 may also include a memory controller to provide the processor 908 and the input unit 903 with access to the memory 902 .
  • the input unit 903 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.
  • the input unit 903 may include a touch-sensitive surface as well as other input devices.
  • a touch-sensitive surface also known as a touch display or trackpad, collects the user's touch operations on or near it (such as the user using a finger, stylus, or any suitable object or accessory on or near the touch-sensitive surface. operations near the surface) and drive the corresponding connection device according to the preset program.
  • the touch-sensitive surface may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact point coordinates, and then sends it to the touch controller. to the processor 908, and can receive commands sent by the processor 908 and execute them.
  • touch-sensitive surfaces can be implemented using a variety of types including resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 903 may also include other input devices. Specifically, other input devices may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), trackball, mouse, joystick, etc.
  • the display unit 904 may be used to display information input by the user or information provided to the user as well as various graphical user interfaces of the electronic device. These graphical user interfaces may be composed of graphics, text, icons, videos, and any combination thereof.
  • the display unit 904 may include a display panel.
  • a liquid crystal display (LCD, Liquid Crystal Display) may be used. Crystal Display), organic light-emitting diode (OLED, Organic Light-Emitting Diode) and other forms to configure the display panel.
  • the touch-sensitive surface can cover the display panel. When the touch-sensitive surface detects a touch operation on or near it, it is sent to the processor 908 to determine the type of the touch event. The processor 908 then displays the display panel according to the type of the touch event.
  • Corresponding visual output is provided on the panel.
  • the touch-sensitive surface and the display panel are used as two independent components to implement the input and input functions, in some embodiments, the touch-sensitive surface and the display panel can be integrated to implement the input and output functions.
  • the electronic device may also include at least one sensor 905, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor.
  • the ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light.
  • the proximity sensor may close the display panel and/or when the electronic device moves to the ear. Backlight.
  • the gravity acceleration sensor can detect the magnitude of acceleration in all directions (usually three axes). It can detect the magnitude and direction of gravity when stationary.
  • the audio circuit 906, speaker, and microphone can provide an audio interface between the user and the electronic device.
  • the audio circuit 906 can transmit the electrical signal converted from the received audio data to the speaker, which converts it into a sound signal and outputs it; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received and converted by the audio circuit 906
  • the audio data is processed by the audio data output processor 908 and then sent to, for example, another electronic device through the RF circuit 901, or the audio data is output to the memory 902 for further processing.
  • Audio circuitry 906 may also include an earphone jack to provide communication between peripheral earphones and electronic devices.
  • WiFi is a short-distance wireless transmission technology. Electronic devices can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 907. It provides users with wireless broadband Internet access.
  • FIG. 9 shows the WiFi module 907, it can be understood that it is not a necessary component of the electronic device and can be omitted as needed without changing the essence of the invention.
  • the processor 908 is the control center of the electronic device, using various interfaces and lines to connect various parts of the entire mobile phone, by running or executing software programs and/or modules stored in the memory 902, and calling data stored in the memory 902, Perform various functions of electronic devices and process data.
  • the processor 908 may include one or more processing cores; preferably, the processor 908 may integrate an application processor and a modem processor, where the application processor mainly processes operating systems, user interfaces, application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the above-mentioned modem processor may not be integrated into the processor 908.
  • the electronic device also includes a power supply 909 (such as a battery) that supplies power to various components.
  • a power supply 909 (such as a battery) that supplies power to various components.
  • the power supply can be logically connected to the processor 908 through a power management system, so that functions such as charging, discharging, and power consumption management can be implemented through the power management system.
  • Power supply 909 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.
  • the electronic device may also include a camera, a Bluetooth module, etc., which will not be described again here.
  • the processor 908 in the electronic device will load the executable files corresponding to the processes of one or more application programs into the memory 902 according to the following instructions, and the processor 908 will run the executable files stored in The application program in the memory 902 implements various functions, as follows:
  • overdrive control reference parameters backlight control information and pixel signal statistical values, predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed;
  • pixel signal amplitude and overdrive coefficient predict the cumulative heat value of each display screen partition when displaying the image frame to be displayed
  • the display device is overdriven through the target overdrive coefficient corresponding to each display partition.
  • embodiments of the present invention provide a computer-readable storage medium in which a plurality of instructions are stored, and the instructions can be loaded by a processor to execute any of the display overdrive control methods provided by embodiments of the present invention.
  • a step of. For example, this command can perform the following steps:
  • overdrive control reference parameters backlight control information and pixel signal statistical values, predict the pixel signal amplitude of each display screen partition when displaying the image frame to be displayed;
  • pixel signal amplitude and overdrive coefficient predict the cumulative heat value of each display screen partition when displaying the image frame to be displayed
  • the display device is overdriven through the target overdrive coefficient corresponding to each display partition.
  • the computer-readable storage medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.
  • a computer program product or computer program is also provided.
  • the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium.
  • the processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device performs the methods provided in various optional implementations in the above embodiments.

Abstract

一种显示过驱控制方法、装置、电子设备和存储介质;可以获取多个显示屏分区的过驱控制参考参数、背光控制信息和待显示图像帧的多个虚拟分区的像素信号统计值(201),根据过驱控制参考参数、背光控制信息以及像素信号统计值预测在显示待显示图像帧时的像素信号幅度(202),基于像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度确定过驱系数(203),基于过驱控制参考参数、像素信号幅度和过驱系数预测分区热量累计值(204),根据分区热量累计值和过驱控制参考参数对过驱系数进行热量控制修正得到目标过驱系数(205),通过目标过驱系数对显示设备进行过驱控制(206)。可以在不改变显示设备的硬件结构的基础上,提升过驱持续时间,改善显示设备的过驱效果。

Description

一种显示过驱控制方法、装置、终端设备及存储介质 技术领域
本发明涉及显示技术领域,具体涉及一种显示过驱控制方法、装置、电子设备和存储介质。
背景技术
过驱技术是显示技术领域中的一种可以在不增加硬件成本的前提下,提升显示设备的显示效果的驱动技术。可以理解的是,显示设备的工作过程中会产生热量,而过驱技术的使用能会让显示设备中的热量累计得更加快速。
目前,在应用过驱技术时采取的主要方法是,在显示设备上市之前,预先用极端的检测图像测试出一组显示设备可以负载的过驱参数,在用户使用该显示设备时即采用这一组过驱参数进行过驱控制。但是采用这种方案,用一组极端的量化参数对显示设备整体进行控制,过驱控制的精度较低,影响显示设备的过驱效果。
技术问题
现有技术中用一组极端的量化参数对显示设备整体进行控制,过驱控制的精度较低,影响显示设备的过驱效果的问题。
技术解决方案
本发明实施例提供一种显示过驱控制方法、装置、电子设备和存储介质,可以在不改变显示设备的硬件结构的基础上,提升过驱持续时间,改善显示设备的过驱效果。
本发明实施例提供一种显示过驱控制方法,包括:
获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
根据所述过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度;
基于预设的像素信号幅度与参考过驱系数之间的映射关系以及所述像素信号幅度,从所述参考过驱系数中确定所述像素信号幅度对应的过驱系数;
基于所述过驱控制参考参数、像素信号幅度和过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值;
根据分区热量累计值和所述过驱控制参考参数对各所述显示屏分区的过驱系数进行热量控制修正,得到各所述显示屏分区的目标过驱系数;
通过各所述显示屏分区对应的所述目标过驱系数对所述显示设备进行过驱控制。
相应的,本发明实施例提供一种显示过驱控制装置,包括:
参数获取单元,用于获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
幅度预测单元,用于根据所述过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度;
系数确定单元,用于基于预设的像素信号幅度与参考过驱系数之间的映射关系以及所述像素信号幅度,从所述参考过驱系数中确定所述像素信号幅度对应的过驱系数;
热量累计值预测单元,用于基于所述过驱控制参考参数、像素信号幅度和过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值;
系数修正单元,用于根据分区热量累计值和所述过驱控制参考参数对各所述显示屏分区的过驱系数进行热量控制修正,得到各所述显示屏分区的目标过驱系数;
过驱控制单元,用于通过各所述显示屏分区对应的所述目标过驱系数对所述显示设备进行过驱控制。
可选的,本发明实施例提供的显示过驱控制装置还包括统计单元,用于获取待显示图像帧,针对所述待显示图像帧进行分区处理得到所述待显示图像帧对应的多个虚拟分区;
根据各所述虚拟分区中各像素点对应的像素信号,计算各所述虚拟分区的像素信号平均值以及像素信号最大值作为像素信号统计值。
可选的,所述统计单元,用于获取待显示图像帧;
根据所述待显示图像帧中各像素点对应的像素信号,对所述待显示图像帧进行不均匀分区处理,得到所述待显示图像帧对应的多个虚拟分区。
可选的,所述幅度预测单元,用于根据所述过驱控制参考参数指示的各所述显示屏分区的显示屏分区位置,以及各所述虚拟分区对应的虚拟分区位置,确定各所述显示屏分区对应的虚拟分区集合;
基于各所述虚拟分区集合中各所述虚拟分区的像素信号统计值,计算各所述显示屏分区对应的初始像素信号幅度;
若所述初始像素信号幅度小于预设的幅度阈值,根据所述初始像素信号幅度、过驱控制参考参数和背光控制信息,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度。
可选的,本发明实施例提供的显示过驱控制装置还包括映射表获取单元,用于获取预设的像素信号映射表,所述像素信号映射表中包括像素信号统计值与像素信号映射函数之间的对应关系;
所述幅度预测单元,用于基于各所述虚拟分区集合中各所述虚拟分区的像素信号统计值以及所述像素信号映射表,确定各所述像素信号统计值对应的目标像素信号映射函数;
通过所述目标像素信号映射函数对各所述像素信号统计值进行映射,得到各所述虚拟分区的像素信号映射值;
基于各所述像素信号映射值计算各所述显示屏分区对应的初始像素信号幅度。
可选的,所述像素信号统计值包括像素信号平均值,所述幅度预测单元,用于通过所述目标像素信号映射函数对各所述像素信号平均值进行映射,得到各所述虚拟分区的像素信号平均映射值;
基于各所述像素信号平均映射值,计算各所述虚拟分区集合中各所述虚拟分区的所述像素信号平均映射值之和,得到各所述虚拟分区集合对应的像素信号幅度和;
确定各所述虚拟分区集合中所述虚拟分区的分区数量,分别计算各所述虚拟分区集合对应的所述像素信号幅度和与所述分区数量之商,得到各所述虚拟分区集合对应的所述显示屏分区的初始像素信号幅度。
可选的,所述过驱控制参考参数包括最大过驱驱动电流,所述幅度预测单元,用于将所述初始像素信号幅度和背光控制信息相乘,计算所述显示屏分区的背光像素信号幅度;
针对所述背光像素信号幅度与所述最大过驱驱动电流进行除法运算,得到在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度。
可选的,所述像素信号统计值包括像素信号最大值,本发明实施例提供的显示过驱控制装置还包括最大幅度预测单元,用于根据所述过驱控制参考参数以及像素信号最大值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号最大幅度;
所述系数确定单元,用于基于所述像素信号最大幅度和所述像素信号幅度建立过驱系数搜索索引;
根据所述过驱系数搜索索引,从预设的像素信号幅度与参考过驱系数之间的映射关系中查找得到过驱系数。
可选的,各所述显示屏分区的过驱控制参考参数包括各所述显示屏分区的过驱持续时间基准、平均信号幅度最小值以及分区过驱权重;
所述系数修正单元,用于分别针对各所述显示屏分区,计算各所述显示屏分区的所述过驱持续时间基准、平均信号幅度最小值以及分区过驱权重之间的乘积,得到各所述显示屏分区对应的热量累计上限;
比较各所述显示屏分区的所述分区热量累计值和所述热量累计上限;
针对所述分区热量累计值大于所述热量累计上限的过热显示屏分区,降低所述过热显示屏分区的过驱系数,以使得所述过热显示屏分区基于降低后的过驱系数对所述待显示图像帧进行过驱显示时得到的新的分区热量累计值不大于所述热量累计上限;
将各所述过热显示屏分区的降低后的过驱系数作为各所述过热显示屏分区的目标过驱系数。
可选的,本发明实施例提供的显示过驱控制装置还包括相邻系数修正单元,用于基于所述过热显示屏分区的位置信息,至少降低与所述过热显示屏分区存在位置相邻关系的相邻显示屏分区的过驱系数;
将各所述相邻显示屏分区的降低后的过驱系数作为各所述相邻显示屏分区的目标过驱系数。
可选的,各所述显示屏分区的过驱控制参考参数包括各所述显示屏分区的过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重,本发明实施例提供的显示过驱控制装置还包括过热保护单元,用于分别针对各所述显示屏分区,计算各所述显示屏分区的所述过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重之间的乘积,得到各所述显示屏分区对应的热量保护阈值;
检测各所述显示屏分区当前的真实分区热量累计值,比较各所述显示屏分区的所述真实分区热量累计值与所述热量保护阈值;
针对所述真实分区热量累计值不小于所述热量保护阈值的显示屏分区,控制所述显示屏分区不进行过驱显示。
可选的,所述过驱控制参考参数包括最大过驱驱动电流,所述热量累计值预测单元,用于基于所述过驱控制参考参数中的最大过驱驱动电流、像素信号幅度以及过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量增量值;
获取各所述显示屏分区的历史热量累计值;
根据各所述显示屏分区的所述历史热量累计值和所述分区热量增量值,计算在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值。
可选的,本发明实施例提供的显示过驱控制装置还包括热量累计值更新单元,用于在显示所述待显示图像帧时,检测各所述显示屏分区当前的真实分区热量累计值;
将所述真实分区热量累计值作为各所述显示屏分区的新的历史热量累计值。
可选的,所述参数获取单元,用于获取显示设备的多个显示屏分区的过驱控制参考参数以及待显示图像帧;
根据所述显示屏分区,对所述待显示图像帧进行分块,得到与所述显示屏分区匹配的图像块;
基于各所述图像块的像素信号处理得到背光控制信息;
获取所述待显示图像帧的多个虚拟分区的像素信号统计值。
相应的,本发明实施例还提供一种电子设备,包括存储器和处理器;所述存储器存储有应用程序,所述处理器用于运行所述存储器内的应用程序,以执行本发明实施例所提供的任一种显示过驱控制方法中的步骤。
相应的,本发明实施例还提供一种计算机可读存储介质,所述计算机可读存储介质存储有多条指令,所述指令适于处理器进行加载,以执行本发明实施例所提供的任一种显示过驱控制方法中的步骤。
此外,本发明实施例还提供一种计算机程序产品,包括计算机程序或指令,所述计算机程序或指令被处理器执行时实现本发明实施例所提供的任一种显示过驱控制方法中的步骤。
有益效果
有益效果:采用本发明实施例的方案,可以获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值,根据该过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示该待显示图像帧时各该显示屏分区的像素信号幅度,基于预设的像素信号幅度与参考过驱系数之间的映射关系以及该像素信号幅度,从该参考过驱系数中确定该像素信号幅度对应的过驱系数,基于该过驱控制参考参数、像素信号幅度和过驱系数,预测在显示该待显示图像帧时各该显示屏分区的分区热量累计值,根据分区热量累计值和该过驱控制参考参数对各该显示屏分区的过驱系数进行热量控制修正,得到各该显示屏分区的目标过驱系数,通过各该显示屏分区对应的该目标过驱系数对该显示设备进行过驱控制;由于在本发明实施例中,针对显示设备的显示屏进行了分区,并动态监测各个显示屏分区的热量积累情况以实现对各个显示屏分区的过驱状态进行动态的控制,因此,可以在不改变显示设备的硬件结构的基础上,提升过驱持续时间,改善显示设备的过驱效果。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的显示过驱控制方法的场景示意图;
图2是本发明实施例提供的显示过驱控制方法的流程图;
图3是本发明实施例提供的显示屏分区示意图;
图4是本发明实施例提供的背光控制信息与显示屏分区之间的对应关系示意图;
图5是本发明实施例提供的逻辑计算示意图;
图6是本发明实施例提供的显示过驱控制过程的流程示意图;
图7是本发明实施例提供的显示过驱控制装置的结构示意图;
图8是本发明实施例提供的显示过驱控制装置的另一结构示意图;
图9是本发明实施例提供的电子设备的结构示意图。
本发明的实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域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,都属于本发明保护的范围。
本发明实施例提供一种显示过驱控制方法、装置、电子设备和计算机可读存储介质。具体地,本发明实施例提供适用于显示过驱控制装置的显示过驱控制方法,该显示过驱控制装置可以集成在电子设备中。
该电子设备可以为终端等设备,包括但不限于移动终端和固定终端,例如移动终端包括但不限于智能手机、智能手表、平板电脑、笔记本电脑、智能车载等,其中,固定终端包括但不限于台式电脑、智能电视等。
该电子设备还可以为服务器等设备,该服务器可以是独立的物理服务器,也可以是多个物理服务器构成的服务器集群或者分布式系统,还可以是提供云服务、云数据库、云计算、云函数、云存储、网络服务、云通信、中间件服务、域名服务、安全服务、CDN(Content Delivery Network,内容分发网络)、以及大数据和人工智能平台等基础云计算服务的云服务器,但并不局限于此。
本发明实施例的显示过驱控制方法,可以由服务器实现,也可以由终端和服务器共同实现。
下面以终端和服务器共同实现该显示过驱控制方法为例,对该方法进行说明。
如图1所示,本发明实施例提供的显示过驱控制系统包括显示设备10和服务器20等;终端10与服务器20之间通过网络连接,比如,通过有线或无线网络连接等,其中,服务器20可以作为向终端10发送待显示的数据的电子设备存在。
其中,服务器20可以用于向终端10发送待显示图像帧。
终端10,可以用于获取终端10的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值,根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度,基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数,基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值,根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数。
终端10可以在显示待显示图像帧时,通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制。
可以理解的是,在一些实施例中,服务器20提供的待显示的数据例如待显示图像帧也可以直接存储在终端10中,本发明实施例对此不做限定。
在另一些实施例中,终端10执行的确定各显示屏分区的目标过驱系数的步骤也可以由服务器20执行。例如,服务器20在得到各显示屏分区的目标过驱系数后可以将目标过驱系数发送给终端10,以使得终端10通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制。
以下分别进行详细说明。需要说明的是,以下实施例的描述顺序不作为对实施例优选顺序的限定。
本发明实施例将从显示过驱控制装置的角度进行描述,该显示过驱控制装置具体可以集成在具有服务器和/或终端中。
如图2所示,本实施例的显示过驱控制方法的具体流程可以如下:
201、获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值。
其中,显示设备为具有显示功能的电子设备,例如电视、平板电脑、笔记本电脑、智能手机、智能手表、智能车载等。
具体的,显示屏分区为对显示设备的显示屏区域进行划分得到显示范围。例如,如图3所示,可以将一显示屏区域划分为4行4列共16个显示屏分区。或者,对于使用OLED(organic light-emitting diode,有机电致发光显示)技术制造的显示屏,可以将待显示图像帧在显示屏区域中对应的各像素点位置作为显示屏分区,等等。本发明实施例对显示屏分区的分区方式和分区数量不做限定。
其中,过驱控制参考参数为根据显示设备的显示能力设置的参数。例如,过驱控制参考参数可以包括但不限于平均像素信号幅度最小值、最小驱动电流、最大驱动电流、最大过驱驱动电流、过驱持续时间基准、过热保护时间基准等子参数。
可以理解的是,一个过驱控制参考参数与一个显示屏分区对应。或者,一个过驱控制参考参数可以对应多个或者全部的显示屏分区,在有多个过驱控制参考参数的情况下,每个显示屏分区的过驱控制参考参数可以相同,也可以存在至少一个不同的子参数。
若一个过驱控制参考参数对应多个显示屏分区,过驱控制参考参数可以对其对应的若干个显示屏分区的位置、数量等进行描述,例如,过驱控制参考参数中可以包括对于显示屏区域的横向划分区数、纵向划分区数等,或者,过驱控制参考参数中可以包括其对应的显示屏分区的位置或者编号等。
其中,背光控制信息可以是根据待显示图像帧在显示屏分区中对应的图像内容计算得到的信息,用于在显示待显示图像帧时进行背光控制。不同的显示屏分区对应的背光控制信息可能相同也可能不同。
在实际应用过程中,可以是根据待显示图像帧进行分块,对不同块使用不同的系数(图像块或LED块的亮度强度)去调节背光以达到高对比度,即亮的地方更亮、暗的地方更暗,背光控制信息即为调节背光时使用的相关参数信息。也就是说,步骤201具体可以包括:
获取显示设备的多个显示屏分区的过驱控制参考参数以及待显示图像帧;
根据显示屏分区,对待显示图像帧进行分块,得到与显示屏分区匹配的图像块;
基于各图像块的像素信号处理得到背光控制信息;
获取待显示图像帧的多个虚拟分区的像素信号统计值。
例如,显示设备具有16个显示屏分区,相应的,在对待显示图像帧进行分块时,可以是将待显示图像帧分成如图4的401所示的与显示屏分区对应的16个图像块。
具体的,对图4的401中的待显示图像帧在显示屏分区中对应的图像内容计算可以得到如图4的402所示的各显示屏分区的背光控制信息。
在本发明实施例中,待显示图像帧可以为要在显示屏中显示的信息组成的图像。例如,待显示图像帧可以是要通过显示屏进行播放的图片或者视频的视频帧,或者,待显示图像帧可以是由一应用程序界面和显示屏默认背景组成的图像帧,等等。
具体的,虚拟分区为对待显示图像帧进行划分得到的区域。可以理解的是,虚拟分区的划分可以并没有实际的对待显示图像帧进行切割成若干个子图像等操作,只是将待显示图像帧中某些像素点构成的区域作为一个虚拟分区。
一般的,虚拟分区的数量会大于显示屏分区的数量。
在一些可选的示例中,虚拟分区的划分可以是均匀划分的,例如,对虚拟分区的划分可以是将整个待显示图像帧平均划分为m行n列,具体的m和n的数值可以由技术人员预先进行设定,或者在进行虚拟分区的划分时根据不同待显示图像帧的内容自动对m和n进行调整。
比如,对于内容丰富的待显示图像帧(例如可以对待显示图像帧进行对象检测,检测得到的对象的数量大于预设阈值的待显示图像帧即可以认为内容丰富)可以将m和n的数值设置的较大,对于内容简单的待显示图像帧(例如连续的纯色区域在待显示图像帧中所占的比例大于预设区域阈值即可以认为内容简单)可以适当的调小m和n的数值。
再比如,对虚拟分区的划分可以是将整个待显示图像帧平均划分为108行192列,对于以4K(3840✖2160)的分辨率进行显示的待显示图像帧而言,即每个虚拟分区中包括20✖20共400个像素点。
在另一些可选的示例中,为了进一步发挥显示设备中部分硬件优势,也可以对待显示图像帧进行不均匀的虚拟分区的划分。具体的,步骤“获取待显示图像帧,针对待显示图像帧进行分区处理得到待显示图像帧对应的多个虚拟分区”,可以包括:
获取待显示图像帧;
根据待显示图像帧中各像素点对应的像素信号,对待显示图像帧进行不均匀分区处理,得到待显示图像帧对应的多个虚拟分区。
其中,不均匀分区处理得到的多个虚拟分区中,至少存在两个虚拟分区对应的像素点数量是不同的。
例如,进行不均匀分区处理时,可以是根据各显示屏分区在待显示图像帧对应区域的图像内容,确定针对各区域进行虚拟分区的数量。比如,可以将某个显示屏分区在待显示图像帧中对应的区域划分成h行t列,对于内容丰富的区域(例如可以对该区域进行对象检测,检测得到的对象的数量大于预设阈值的区域即可以认为内容丰富)可以将h和t的数值设置的较大,对于内容简单的区域(例如连续的纯色部分在区域中所占的比例大于预设区域阈值即可以认为内容简单)可以适当的调小h和t的数值。
在一些可选的实施例中,像素信号统计值可以是在显示设备或者与显示设备连接的服务器等远程设备,在基于待显示图像帧进行过驱控制之前预先对待显示图像帧进行计算得到的。也就是说,步骤“获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值”之前,本发明实施例提供的显示过驱控制方法还可以包括:
获取待显示图像帧,针对待显示图像帧进行分区处理得到待显示图像帧对应的多个虚拟分区;
根据各虚拟分区中各像素点对应的像素信号,计算各虚拟分区的像素信号平均值以及像素信号最大值作为像素信号统计值。
其中,像素信号统计值是基于各虚拟分区中各像素点对应的像素信号进行统计学处理得到的数据。
具体的,像素信号可以理解为各像素点对应的像素颜色信号。具体的,像素信号可以通过RGB彩色空间、YUV彩色空间、YIQ彩色空间等模式进行表示。
预先计算像素信号统计值可以加快显示设备基于待显示图像帧进行过驱控制的速度,减轻显示设备的计算压力。例如,在播放视频时,显示设备可以预先计算某些还没有进行显示的待显示图像帧的像素信号统计值并进行存储,以便在需要待显示图像帧的像素信号统计值时可以快速获取。
或者,显示设备可以在需要待显示图像帧的像素信号统计值时向远程设备发送像素信号统计值的获取请求,触发远程设备向显示设备发送像素信号统计值。
可以理解的是,在显示设备的计算资源允许时,像素信号统计值也可以是在基于待显示图像帧进行过驱控制时由显示设备实时计算得到的,本发明实施例对此不做限定。
具体的,像素信号统计值中的像素信号平均值可以是对虚拟分区中各像素点的像素信号计算平均值得到的,像素信号统计值中的像素信号最大值可以是对虚拟分区中各像素点的像素信号取最大值得到的。
以每个虚拟分区中包括400个像素点为例,像素信号平均值可以通过如下方式计算得到:
apl_i=average(s1,s2,……,s400)=(s1+s2+……+s400)/400
像素信号最大值可以通过如下方式计算得到:
a_max_i=max(s1,s2,……,s400)
其中,apl_i为第i个虚拟分区的像素信号平均值,a_max_i为第i个虚拟分区的像素信号最大值。s1、s2,……,s400分别表示第i个虚拟分区中第1个至第400个像素点的像素信号。
202、根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度。
在实际应用过程中,显示屏分区在显示待显示图像帧时的像素信号的幅度会影响到过驱效果。
在一些示例中,如果根据过驱控制参考参数、背光控制信息以及像素信号统计值预测得到的初始像素信号幅度超过显示屏分区的幅度阈值,可以对初始像素信号幅度进行放大,以实现进一步过驱。即,步骤202具体可以包括:
根据过驱控制参考参数指示的各显示屏分区的显示屏分区位置,以及各虚拟分区对应的虚拟分区位置,确定各显示屏分区对应的虚拟分区集合;
基于各虚拟分区集合中各虚拟分区的像素信号统计值,计算各显示屏分区对应的初始像素信号幅度;
若初始像素信号幅度小于预设的幅度阈值,根据初始像素信号幅度、过驱控制参考参数和背光控制信息,预测在显示待显示图像帧时各显示屏分区的像素信号幅度。
其中,初始像素信号幅度是未对待显示图像帧进行过驱处理的情况下显示屏分区在显示待显示图像帧时可以达到的幅度。
如果初始像素信号幅度较小,说明可以对该显示屏分区进行过驱处理,此时,可以根据要对该显示屏分区进行背光处理的背光控制信息,计算一个放大后的初始像素信号幅度。
具体的,过驱控制参考参数包括最大过驱驱动电流,步骤“根据初始像素信号幅度、过驱控制参考参数和背光控制信息,预测在显示待显示图像帧时各显示屏分区的像素信号幅度”,可以包括:
将初始像素信号幅度和背光控制信息相乘,计算显示屏分区的背光像素信号幅度;
针对背光像素信号幅度与最大过驱驱动电流进行除法运算,得到在显示待显示图像帧时各显示屏分区的像素信号幅度。
像素信号幅度的计算过程可以通过如下公式表示:
apl_k=apl_j * Bi_j / i_boost
其中,apl_k为一显示屏分区的像素信号幅度,apl_j为该显示屏分区的初始像素信号幅度,Bi_j为该显示屏分区的背光控制信息, i_boost为该显示屏分区的最大过驱驱动电流。
在另一些示例中,如果一显示屏分区的初始像素信号幅度不小于幅度阈值,则可以认为该显示屏分区在显示待显示图像帧时不具备进一步过驱的条件,此时,可以不对该初始像素信号幅度进行处理。
也就是说,可以判断一显示屏分区的apl_j是否大于apl_low(幅度阈值),若大于,该显示屏分区不具备进一步过驱的条件,直接跳至下一显示屏分区;若小于,则计算新的apl_k。
需要说明的是,由于虚拟分区的数量远大于显示屏分区的数量,虚拟分区与显示屏分区之间需要具有一定的映射关系,该映射关系主要取决于虚拟分区的划分方式。
比如,如果虚拟分区是采用均匀划分的方式得到的,该映射关系可以是虚拟分区与显示屏分区之间借助空间位置进行对应。例如,对虚拟分区的划分可以是将整个待显示图像帧平均划分为108行192列,而显示屏分区为16个,此时,一个显示屏分区可以与27*48共1296个虚拟分区相对应。
再比如,如果虚拟分区是采用不均匀划分的方式得到的,该映射关系也可以是虚拟分区与显示屏分区之间只借助空间位置进行对应,例如显示屏分区1对应4个虚拟分区,显示屏分区2对应16个虚拟分区。
进一步的,可以将显示屏分区对应的多个虚拟分区的像素信号统计值根据显示屏分区的不同,调用相应的计算逻辑进行转化,最终每个显示屏分区都有一个转化后的像素信号统计值与之对应。
即,步骤“基于各虚拟分区集合中各虚拟分区的像素信号统计值,计算各显示屏分区对应的初始像素信号幅度”之前,本发明实施例提供的显示过驱控制方法还包括:
获取预设的像素信号映射表,像素信号映射表中包括像素信号统计值与像素信号映射函数之间的对应关系。
其中,像素信号映射表可以预先存储在显示设备中。
在本发明实施例中,像素信号映射表可以是LUT(Look-Up-Table,显示查找表)的形式。LUT本质上就是一个RAM。它把数据事先写入RAM后,每当输入一个信号就等于输入一个地址进行查表,找出地址对应的内容,然后输出。
其中,像素信号映射函数可以将像素信号统计值经过一定的变换如阈值、反转、二值化、对比度调整、线性变换等,变成了另外一个与之对应的映射值。
相应的,步骤“基于各虚拟分区集合中各虚拟分区的像素信号统计值,计算各显示屏分区对应的初始像素信号幅度”,具体可以包括:
基于各虚拟分区集合中各虚拟分区的像素信号统计值以及像素信号映射表,确定各像素信号统计值对应的目标像素信号映射函数;
通过目标像素信号映射函数对各像素信号统计值进行映射,得到各虚拟分区的像素信号映射值;
基于各像素信号映射值计算各显示屏分区对应的初始像素信号幅度。
例如,图5是一个像素信号映射表的示意图,表中的每个数字可以表示对相应的虚拟分区的像素信号统计值进行该数字倍数的映射。
在一些可选的实施例中,像素信号统计值包括像素信号平均值,步骤“通过目标像素信号映射函数对各像素信号统计值进行映射,得到各虚拟分区的像素信号映射值”,具体可以包括:
通过目标像素信号映射函数对各像素信号平均值进行映射,得到各虚拟分区的像素信号平均映射值。
相应的,步骤“基于各像素信号映射值计算各显示屏分区对应的初始像素信号幅度”,可以包括:
基于各像素信号平均映射值,计算各虚拟分区集合中各虚拟分区的像素信号平均映射值之和,得到各虚拟分区集合对应的像素信号幅度和;
确定各虚拟分区集合中虚拟分区的分区数量,分别计算各虚拟分区集合对应的像素信号幅度和与分区数量之商,得到各虚拟分区集合对应的显示屏分区的初始像素信号幅度。
例如,以图5为像素信号映射表、一显示屏分区可以与27*48共1296个虚拟分区相对应为例,该显示屏分区的初始像素信号幅度可以通过如下过程计算得到:
apl_j=(apl_1*L_LUT(1,1,1)+ apl_2*L_LUT(1,2,1)+……+ apl_((a-1)*27+b)*L_LUT(a,b,1)+……+ apl_(48*27)*L_LUT(48,27,1))/(48*27);
其中,apl_j为该显示屏分区的初始像素信号幅度,L_LUT为图5的像素信号映射表,L_LUT(1,1,1)表示显示屏分区中的第一个虚拟分区,48*27为显示屏分区对应的虚拟分区的数量。
203、基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数。
在一些实施例中,可以仅根据像素信号幅度确定过驱系数,例如像素信号幅度与参考过驱系数之间的映射关系中仅包括每个像素信号幅度对应的参考过驱系数。
在另一些实施例中,为了提升过驱系数的准确性,可以根据像素信号幅度和像素信号最大幅度确定过驱系数。此时,像素信号统计值包括像素信号最大值,步骤203之前,本发明实施例提供的显示过驱控制方法还包括:
根据过驱控制参考参数以及像素信号最大值,预测在显示待显示图像帧时各显示屏分区的像素信号最大幅度。
对应的,步骤“基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数”,具体可以包括:
基于像素信号最大幅度和像素信号幅度建立过驱系数搜索索引;
根据过驱系数搜索索引,从预设的像素信号幅度与参考过驱系数之间的映射关系中查找得到过驱系数。
也就是说,在本发明实施例中,可以将像素信号幅度apl_k和像素信号最大幅度a_max_j作为索引值,代入预设的像素信号幅度与参考过驱系数之间的映射关系,查找得到过驱系数A_k,即为对应的显示屏分区的过驱系数。
其中,步骤“根据过驱控制参考参数以及像素信号最大值,预测在显示待显示图像帧时各显示屏分区的像素信号最大幅度”,具体可以包括:
根据过驱控制参考参数指示的各显示屏分区的显示屏分区位置,以及各虚拟分区对应的虚拟分区位置,确定各显示屏分区对应的虚拟分区集合;
基于各虚拟分区集合中各虚拟分区的像素信号最大值,计算各显示屏分区对应的像素信号最大幅度。
具体的,确定显示屏分区对应的虚拟分区的过程与前述计算初始像素信号幅度时的过程类似,本发明实施例在此不再赘述。
其中,步骤“基于各虚拟分区集合中各虚拟分区的像素信号最大值,计算各显示屏分区对应的像素信号最大幅度”,包括:
基于各虚拟分区集合中各虚拟分区的像素信号最大值以及像素信号映射表,确定各像素信号最大值对应的目标像素信号映射函数;
通过目标像素信号映射函数对各像素信号最大值进行映射,得到各虚拟分区的像素信号最大映射值;
基于各像素信号最大映射值计算各显示屏分区对应的像素信号最大幅度。
具体的,像素信号映射表中可以包括像素信号平均值、像素信号最大值与像素信号映射函数之间的对应关系。
在本发明实施例中,像素信号最大映射值的计算过程与初始像素信号幅度的计算过程可以同时进行,也可以非同时进行,本发明实施例对此不做限定。
例如,以图5为像素信号映射表、一显示屏分区可以与27*48共1296个虚拟分区相对应为例,该显示屏分区的初始像素信号幅度可以通过如下过程计算得到:
a_max_j= (a_max_1*L_LUT(1,1,1)+ a_max_2*L_LUT(1,2,1)+……+ a_max_((a-1)*27+b)*L_LUT(a,b,1)+……+ a_max_(48*27)*L_LUT(48,27,1))/(48*27);
其中,a_max_j为该显示屏分区的像素信号最大幅度,L_LUT为图5的像素信号映射表,L_LUT(1,1,1)表示显示屏分区中的第一个虚拟分区,48*27为显示屏分区对应的虚拟分区的数量。
204、基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值。
可以理解的是,显示设备在显示画面的过程中会产生一定的热量。分区热量累计值可以衡量显示设备的各显示屏分区从开始工作到显示待显示图像帧时累计产生的热量。
具体的,分区热量累计值可以通过将历史工作过程中累积的热量与显示待显示图像帧的过程中生成的热量进行求和计算得到。也就是说,过驱控制参考参数可以包括最大过驱驱动电流,步骤204具体可以包括:
基于过驱控制参考参数中的最大过驱驱动电流、像素信号幅度以及过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量增量值;
获取各显示屏分区的历史热量累计值;
根据各显示屏分区的历史热量累计值和分区热量增量值,计算在显示待显示图像帧时各显示屏分区的分区热量累计值。
具体的,每一个显示屏分区的分区热量增量值可以通过如下公式计算得到:
P_k=apl_k*i_boost*A_k
其中,P_k为一显示屏分区的分区热量增量值,apl_k为该显示屏分区的像素信号幅度,i_boost为该显示屏分区的最大过驱驱动电流,A_k为该显示屏分区的过驱系数。
其中,历史热量累计值可以是在各显示屏分区的历史工作过程中累积的热量。
在一些实施例中,可以将每次显示待显示图像帧后显示屏分区的当前热量累计值作为新的历史热量累计值,即,本发明实施例提供的显示过驱控制方法还包括:
在显示待显示图像帧时,检测各显示屏分区当前的真实分区热量累计值;
将真实分区热量累计值作为各显示屏分区的新的历史热量累计值。
通过对于历史热量累计值的更新,可以提升热量监控的准确度。
或者,历史热量累计值也可以是显示屏分区当前剩余未散失的热量。即,步骤“获取各显示屏分区的历史热量累计值”,可以包括:
获取各显示屏分区的历史热量产生值;
检测各显示屏分区的历史散失热量,根据历史热量产生值和历史散失热量计算各显示屏分区的历史热量累计值。
具体的,历史散失热量可以通过显示屏上的温度传感器进行测量的方式计算得到,或者,可以通过显示屏周围环境的温度以及显示屏温度文化数据估计得到,本发明实施例对历史散失热量的获取方式不做限定。
205、根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数。
在本发明实施例中,对过驱系数进行热量控制修正可以包括对于过驱系数的放大或者缩小,以实现对于过驱显示过程中产生的热量的控制。
如果采用当前的过驱系数进行过驱显示可能造成显示屏分区过热,此时可以对过驱系数进行缩小处理,以避免过热实现对显示屏的保护。
如果采用当前的过驱系数进行过驱显示并不会超出显示屏分区对热量的承受能力,此时可以对过驱系数进行放大处理,以提升过驱显示的效果,例如可以提前进入过驱状态、增长过驱时间、增大过驱电压等。
在一些可选的实施例中,各显示屏分区的过驱控制参考参数包括各显示屏分区的过驱持续时间基准、平均信号幅度最小值以及分区过驱权重,步骤205,具体可以包括:
分别针对各显示屏分区,计算各显示屏分区的过驱持续时间基准、平均信号幅度最小值以及分区过驱权重之间的乘积,得到各显示屏分区对应的热量累计上限;
比较各显示屏分区的分区热量累计值和热量累计上限;
针对分区热量累计值大于热量累计上限的过热显示屏分区,降低过热显示屏分区的过驱系数,以使得过热显示屏分区基于降低后的过驱系数对待显示图像帧进行过驱显示时得到的新的分区热量累计值不大于热量累计上限;
将各过热显示屏分区的降低后的过驱系数作为各过热显示屏分区的目标过驱系数。
其中,过热显示屏分区为以过驱系数对待显示图像帧进行过驱显示时计算得到的分区热量累计值大于热量累计上限的显示屏分区。
具体的,热量累计上限为显示屏分区可以承受的热量的上限值。热量累计上限可以通过如下公式计算得到:
P1(k)=apl_low*local_t0(k)*t0
其中,P1(k)为显示屏分区的热量累计上限,apl_low为显示屏分区的平均信号幅度最小值,local_t0(k)为显示屏分区的分区过驱权重,t0为显示屏分区的过驱持续时间基准。
例如,可以判断显示屏分区的PA_k是否超出热量累计上限P1(k),若PA_k超出P1(k),则降低当前显示屏分区(即过热显示屏分区)的过驱系数A_k得到目标过驱系数,以使得过热显示屏分区基于目标过驱系数对待显示图像帧进行过驱显示时实际的分区热量累计值不大于热量累计上限。
或者,可以直接将过热显示屏分区的过驱系数A_k设为Bi_j / i_boost,即停止过热显示屏分区的过驱。
在一些示例中,为了避免与过热显示屏分区相邻的显示屏分区产生的热量通过热传递等方式对过热显示屏分区造成影响,在对过热显示屏的过驱系数进行缩小处理的基础上,还可以对与过热显示屏分区相邻的显示屏分区的过驱系数进行缩小处理。
即,本发明实施例提供的显示过驱控制方法还可以包括:
基于过热显示屏分区的位置信息,至少降低与过热显示屏分区存在位置相邻关系的相邻显示屏分区的过驱系数;
将各相邻显示屏分区的降低后的过驱系数作为各相邻显示屏分区的目标过驱系数。
具体的对相邻显示屏分区的过驱系数的处理,可以根据预测的过热显示屏分区的热量累积情况决定。
例如,如果PA_k超出P1(k)但低于上限P1(k)的1.2倍,可以将相邻显示屏分区的过驱系数缩小为原本的0.95倍。如果缩小0.95倍后的过驱系数小于Bi_j / i_boost,则将相邻显示屏分区的降低后的过驱系数设为Bi_j / i_boost。
如果PA_k超出P1(k)的1.2倍,可以将相邻显示屏分区或者所有显示屏分区的过驱系数直接缩小为Bi_j / i_boost。
在另一些可选的实施例中,针对分区热量累计值不大于热量累计上限的可以进行过驱显示的过驱显示屏分区可以不对其过驱系数进行处理,直接将其过驱系数作为目标过系数。
或者,可以针对分区热量累计值不大于热量累计上限的的过驱显示屏分区,放大过驱显示屏分区的过驱系数,以使得过驱显示屏分区基于放大后的过驱系数对待显示图像帧进行过驱显示时得到的新的分区热量累计值不大于热量累计上限;
将各过热显示屏分区的放大后的过驱系数作为各过热显示屏分区的目标过驱系数。
206、通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制。
在实际应用过程中,为了避免显示屏过热对显示设备造成损害,当显示屏累计的热量达到一定阈值时,显示屏会进入过热保护状态。在一些可选的实施例中,各显示屏分区的过驱控制参考参数包括各显示屏分区的过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重,本发明实施例提供的显示过驱控制方法还可以包括:
分别针对各显示屏分区,计算各显示屏分区的过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重之间的乘积,得到各显示屏分区对应的热量保护阈值;
检测各显示屏分区当前的真实分区热量累计值,比较各显示屏分区的真实分区热量累计值与热量保护阈值;
针对真实分区热量累计值不小于热量保护阈值的显示屏分区,控制显示屏分区不进行过驱显示。
可以理解的是,在进入过热保护后,需要等待一定时间才能再次进入过驱状态。过热保护下,需要已经累计的热量与热量可以累积的上限之间的差值(即热量保护阈值)达到一定范围才能退出。
具体的,热量保护阈值P2(k)可以根据如下的公式计算得到:
P2(k)=apl_low*local_t1(k)*t1
其中,apl_low为显示屏分区的平均信号幅度最小值,local_t1(k)为显示屏分区的分区过驱保护权重,t1为显示屏分区的过热保护时间基准。
例如,如图6所示,显示设备获取过驱控制参考参数(包括显示屏分区数、各显示屏分区的指标参数等)、背光控制信息以及待显示图像帧。过驱预计算模块基于过驱控制参考参数、背光控制信息以及待显示图像帧的信号幅度统计值,计算一组过驱系数。
热量预统计模块根据过驱预计算模块计算的过驱系数,结合过驱控制参考参数,对各显示屏分区的热量累积情况做一个预统计,输出一组分区热量累计值,同时输出一组分区热量增量值。
过驱决策模块根据分区热量累计值,结合过驱控制参考参数,对各显示屏分区的过驱系数做进一步的修正,输出各显示屏分区的目标过驱系数。分区背光控制模块根据各显示屏分区的目标过驱系数进行实际的背光控制。
在一些可选的实施例中,可以将当前的待显示图像帧与已经进行过过驱显示的已显示图像帧进行相似度比较,若待显示图像帧与已显示图像帧的相似度大于预设的相似阈值,可以直接获取各显示屏分区在显示已显示图像帧时的目标过驱系数,并根据该目标过驱系数对待显示图像帧进行过驱控制。本发明实施例提供的显示过驱控制方法还可以包括:
获取待显示图像帧,以及显示设备的已显示图像帧;
将待显示图像帧与已显示图像帧进行相似度匹配,得到待显示图像帧与各已显示图像帧之间的图像相似度;
若存在图像相似度大于预设的相似度阈值,获取各显示屏分区在显示最大的图像相似度对应的已显示图像帧时的目标过驱系数;
将最大的图像相似度对应的已显示图像帧的目标过驱系数作为待显示图像帧的目标过驱系数;
执行通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制的步骤。
通过图像之间的相似度比较可以提升过驱控制的速度。
由上可知,本发明实施例可以获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值,根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度,基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数,基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值,根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数,通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制;由于在本发明实施例中,针对显示设备的显示屏进行了分区,并动态监测各个显示屏分区的热量积累情况以实现对各个显示屏分区的过驱状态进行动态的控制,因此,可以在不改变显示设备的硬件结构的基础上,提升过驱持续时间,改善显示设备的过驱效果。
为了更好地实施以上方法,相应的,本发明实施例还提供一种显示过驱控制装置。
参考图7,该装置包括:
参数获取单元701,可以用于获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
幅度预测单元702,可以用于根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度;
系数确定单元703,可以用于基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数;
热量累计值预测单元704,可以用于基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值;
系数修正单元705,可以用于根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数;
过驱控制单元706,可以用于通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制。
在一些可选的实施例中,如图8所示,本发明实施例提供的显示过驱控制装置还可以包括统计单元707,可以用于获取待显示图像帧,针对待显示图像帧进行分区处理得到待显示图像帧对应的多个虚拟分区;
根据各虚拟分区中各像素点对应的像素信号,计算各虚拟分区的像素信号平均值以及像素信号最大值作为像素信号统计值。
在一些可选的实施例中,统计单元707,可以用于获取待显示图像帧;
根据待显示图像帧中各像素点对应的像素信号,对待显示图像帧进行不均匀分区处理,得到待显示图像帧对应的多个虚拟分区。
在一些可选的实施例中,幅度预测单元702,可以用于根据过驱控制参考参数指示的各显示屏分区的显示屏分区位置,以及各虚拟分区对应的虚拟分区位置,确定各显示屏分区对应的虚拟分区集合;
基于各虚拟分区集合中各虚拟分区的像素信号统计值,计算各显示屏分区对应的初始像素信号幅度;
若初始像素信号幅度小于预设的幅度阈值,根据初始像素信号幅度、过驱控制参考参数和背光控制信息,预测在显示待显示图像帧时各显示屏分区的像素信号幅度。
在一些可选的实施例中,本发明实施例提供的显示过驱控制装置还可以包括映射表获取单元,可以用于获取预设的像素信号映射表,像素信号映射表中可以包括像素信号统计值与像素信号映射函数之间的对应关系;
幅度预测单元702,可以用于基于各虚拟分区集合中各虚拟分区的像素信号统计值以及像素信号映射表,确定各像素信号统计值对应的目标像素信号映射函数;
通过目标像素信号映射函数对各像素信号统计值进行映射,得到各虚拟分区的像素信号映射值;
基于各像素信号映射值计算各显示屏分区对应的初始像素信号幅度。
在一些可选的实施例中,像素信号统计值可以包括像素信号平均值,幅度预测单元702,可以用于通过目标像素信号映射函数对各像素信号平均值进行映射,得到各虚拟分区的像素信号平均映射值;
基于各像素信号平均映射值,计算各虚拟分区集合中各虚拟分区的像素信号平均映射值之和,得到各虚拟分区集合对应的像素信号幅度和;
确定各虚拟分区集合中虚拟分区的分区数量,分别计算各虚拟分区集合对应的像素信号幅度和与分区数量之商,得到各虚拟分区集合对应的显示屏分区的初始像素信号幅度。
在一些可选的实施例中,过驱控制参考参数可以包括最大过驱驱动电流,幅度预测单元702,可以用于将初始像素信号幅度和背光控制信息相乘,计算显示屏分区的背光像素信号幅度;
针对背光像素信号幅度与最大过驱驱动电流进行除法运算,得到在显示待显示图像帧时各显示屏分区的像素信号幅度。
在一些可选的实施例中,像素信号统计值可以包括像素信号最大值,本发明实施例提供的显示过驱控制装置还可以包括最大幅度预测单元708,可以用于根据过驱控制参考参数以及像素信号最大值,预测在显示待显示图像帧时各显示屏分区的像素信号最大幅度;
系数确定单元703,可以用于基于像素信号最大幅度和像素信号幅度建立过驱系数搜索索引;
根据过驱系数搜索索引,从预设的像素信号幅度与参考过驱系数之间的映射关系中查找得到过驱系数。
在一些可选的实施例中,各显示屏分区的过驱控制参考参数可以包括各显示屏分区的过驱持续时间基准、平均信号幅度最小值以及分区过驱权重;
系数修正单元705,可以用于分别针对各显示屏分区,计算各显示屏分区的过驱持续时间基准、平均信号幅度最小值以及分区过驱权重之间的乘积,得到各显示屏分区对应的热量累计上限;
比较各显示屏分区的分区热量累计值和热量累计上限;
针对分区热量累计值大于热量累计上限的过热显示屏分区,降低过热显示屏分区的过驱系数,以使得过热显示屏分区基于降低后的过驱系数对待显示图像帧进行过驱显示时得到的新的分区热量累计值不大于热量累计上限;
将各过热显示屏分区的降低后的过驱系数作为各过热显示屏分区的目标过驱系数。
在一些可选的实施例中,本发明实施例提供的显示过驱控制装置还可以包括相邻系数修正单元709,可以用于基于过热显示屏分区的位置信息,至少降低与过热显示屏分区存在位置相邻关系的相邻显示屏分区的过驱系数;
将各相邻显示屏分区的降低后的过驱系数作为各相邻显示屏分区的目标过驱系数。
在一些可选的实施例中,各显示屏分区的过驱控制参考参数可以包括各显示屏分区的过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重,本发明实施例提供的显示过驱控制装置还可以包括过热保护单元710,可以用于分别针对各显示屏分区,计算各显示屏分区的过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重之间的乘积,得到各显示屏分区对应的热量保护阈值;
检测各显示屏分区当前的真实分区热量累计值,比较各显示屏分区的真实分区热量累计值与热量保护阈值;
针对真实分区热量累计值不小于热量保护阈值的显示屏分区,控制显示屏分区不进行过驱显示。
在一些可选的实施例中,过驱控制参考参数可以包括最大过驱驱动电流,热量累计值预测单元704,可以用于基于过驱控制参考参数中的最大过驱驱动电流、像素信号幅度以及过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量增量值;
获取各显示屏分区的历史热量累计值;
根据各显示屏分区的历史热量累计值和分区热量增量值,计算在显示待显示图像帧时各显示屏分区的分区热量累计值。
在一些可选的实施例中,本发明实施例提供的显示过驱控制装置还可以包括热量累计值更新单元,可以用于在显示待显示图像帧时,检测各显示屏分区当前的真实分区热量累计值;
将真实分区热量累计值作为各显示屏分区的新的历史热量累计值。
在一些可选的实施例中,参数获取单元701,可以用于获取显示设备的多个显示屏分区的过驱控制参考参数以及待显示图像帧;
根据显示屏分区,对待显示图像帧进行分块,得到与显示屏分区匹配的图像块;
基于各图像块的像素信号处理得到背光控制信息;
获取待显示图像帧的多个虚拟分区的像素信号统计值。
由上可知,通过显示过驱控制装置,可以获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值,根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度,基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数,基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值,根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数,通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制;由于在本发明实施例中,针对显示设备的显示屏进行了分区,并动态监测各个显示屏分区的热量积累情况以实现对各个显示屏分区的过驱状态进行动态的控制,因此,可以在不改变显示设备的硬件结构的基础上,提升过驱持续时间,改善显示设备的过驱效果。
此外,本发明实施例还提供一种电子设备,该电子设备可以为终端或者服务器等等,如图9所示,其示出了本发明实施例所涉及的电子设备的结构示意图,具体来讲:
该电子设备可以包括射频(RF,Radio Frequency)电路901、包括有一个或一个以上计算机可读存储介质的存储器902、输入单元903、显示单元904、传感器905、音频电路906、无线保真(WiFi,Wireless Fidelity)模块907、包括有一个或者一个以上处理核心的处理器908、以及电源909等部件。本领域技术人员可以理解,图9中示出的电子设备结构并不构成对电子设备的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。其中:
RF电路901可用于收发信息或通话过程中,信号的接收和发送,特别地,将基站的下行信息接收后,交由一个或者一个以上处理器908处理;另外,将涉及上行的数据发送给基站。通常,RF电路901包括但不限于天线、至少一个放大器、调谐器、一个或多个振荡器、用户身份模块(SIM, Subscriber Identity Module)卡、收发信机、耦合器、低噪声放大器(LNA,Low Noise Amplifier)、双工器等。此外,RF电路901还可以通过无线通信与网络和其他设备通信。无线通信可以使用任一通信标准或协议,包括但不限于全球移动通讯系统(GSM,Global System of Mobile communication)、通用分组无线服务(GPRS ,General Packet Radio Service)、码分多址(CDMA,Code Division Multiple Access)、宽带码分多址(WCDMA,Wideband Code Division Multiple Access)、长期演进(LTE,Long Term Evolution)、电子邮件、短消息服务(SMS,Short Messaging Service)等。
存储器902可用于存储软件程序以及模块,处理器908通过运行存储在存储器902的软件程序以及模块,从而执行各种功能应用以及数据处理。存储器902可主要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、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据电子设备的使用所创建的数据(比如音频数据、电话本等)等。此外,存储器902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、或其他易失性固态存储器件。相应地,存储器902还可以包括存储器控制器,以提供处理器908和输入单元903对存储器902的访问。
输入单元903可用于接收输入的数字或字符信息,以及产生与用户设置以及功能控制有关的键盘、鼠标、操作杆、光学或者轨迹球信号输入。具体地,在一个具体的实施例中,输入单元903可包括触敏表面以及其他输入设备。触敏表面,也称为触摸显示屏或者触控板,可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触敏表面上或在触敏表面附近的操作),并根据预先设定的程式驱动相应的连接装置。可选的,触敏表面可包括触摸检测装置和触摸控制器两个部分。其中,触摸检测装置检测用户的触摸方位,并检测触摸操作带来的信号,将信号传送给触摸控制器;触摸控制器从触摸检测装置上接收触摸信息,并将它转换成触点坐标,再送给处理器908,并能接收处理器908发来的命令并加以执行。此外,可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触敏表面。除了触敏表面,输入单元903还可以包括其他输入设备。具体地,其他输入设备可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元904可用于显示由用户输入的信息或提供给用户的信息以及电子设备的各种图形用户接口,这些图形用户接口可以由图形、文本、图标、视频和其任意组合来构成。显示单元904可包括显示面板,可选的,可以采用液晶显示器(LCD,Liquid Crystal Display)、有机发光二极管(OLED,Organic Light-Emitting Diode)等形式来配置显示面板。进一步的,触敏表面可覆盖显示面板,当触敏表面检测到在其上或附近的触摸操作后,传送给处理器908以确定触摸事件的类型,随后处理器908根据触摸事件的类型在显示面板上提供相应的视觉输出。虽然在图9中,触敏表面与显示面板是作为两个独立的部件来实现输入和输入功能,但是在某些实施例中,可以将触敏表面与显示面板集成而实现输入和输出功能。
电子设备还可包括至少一种传感器905,比如光传感器、运动传感器以及其他传感器。具体地,光传感器可包括环境光传感器及接近传感器,其中,环境光传感器可根据环境光线的明暗来调节显示面板的亮度,接近传感器可在电子设备移动到耳边时,关闭显示面板和/或背光。作为运动传感器的一种,重力加速度传感器可检测各个方向上(一般为三轴)加速度的大小,静止时可检测出重力的大小及方向,可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等; 至于电子设备还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器,在此不再赘述。
音频电路906、扬声器,传声器可提供用户与电子设备之间的音频接口。音频电路906可将接收到的音频数据转换后的电信号,传输到扬声器,由扬声器转换为声音信号输出;另一方面,传声器将收集的声音信号转换为电信号,由音频电路906接收后转换为音频数据,再将音频数据输出处理器908处理后,经RF电路901以发送给比如另一电子设备,或者将音频数据输出至存储器902以便进一步处理。音频电路906还可能包括耳塞插孔,以提供外设耳机与电子设备的通信。
WiFi属于短距离无线传输技术,电子设备通过WiFi模块907可以帮助用户收发电子邮件、浏览网页和访问流式媒体等,它为用户提供了无线的宽带互联网访问。虽然图9示出了WiFi模块907,但是可以理解的是,其并不属于电子设备的必须构成,完全可以根据需要在不改变发明的本质的范围内而省略。
处理器908是电子设备的控制中心,利用各种接口和线路连接整个手机的各个部分,通过运行或执行存储在存储器902内的软件程序和/或模块,以及调用存储在存储器902内的数据,执行电子设备的各种功能和处理数据。可选的,处理器908可包括一个或多个处理核心;优选的,处理器908可集成应用处理器和调制解调处理器,其中,应用处理器主要处理操作系统、用户界面和应用程序等,调制解调处理器主要处理无线通信。可以理解的是,上述调制解调处理器也可以不集成到处理器908中。
电子设备还包括给各个部件供电的电源909(比如电池),优选的,电源可以通过电源管理系统与处理器908逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。电源909还可以包括一个或一个以上的直流或交流电源、再充电系统、电源故障检测电路、电源转换器或者逆变器、电源状态指示器等任意组件。
尽管未示出,电子设备还可以包括摄像头、蓝牙模块等,在此不再赘述。具体在本实施例中,电子设备中的处理器908会按照如下的指令,将一个或一个以上的应用程序的进程对应的可执行文件加载到存储器902中,并由处理器908来运行存储在存储器902中的应用程序,从而实现各种功能,如下:
获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度;
基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数;
基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值;
根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数;
通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制。
本领域普通技术人员可以理解,上述实施例的各种方法中的全部或部分步骤可以通过指令来完成,或通过指令控制相关的硬件来完成,该指令可以存储于一计算机可读存储介质中,并由处理器进行加载和执行。
为此,本发明实施例提供一种计算机可读存储介质,其中存储有多条指令,该指令能够被处理器进行加载,以执行本发明实施例所提供的任一种显示过驱控制方法中的步骤。例如,该指令可以执行如下步骤:
获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示待显示图像帧时各显示屏分区的像素信号幅度;
基于预设的像素信号幅度与参考过驱系数之间的映射关系以及像素信号幅度,从参考过驱系数中确定像素信号幅度对应的过驱系数;
基于过驱控制参考参数、像素信号幅度和过驱系数,预测在显示待显示图像帧时各显示屏分区的分区热量累计值;
根据分区热量累计值和过驱控制参考参数对各显示屏分区的过驱系数进行热量控制修正,得到各显示屏分区的目标过驱系数;
通过各显示屏分区对应的目标过驱系数对显示设备进行过驱控制。
以上各个操作的具体实施可参见前面的实施例,在此不再赘述。
其中,该计算机可读存储介质可以包括:只读存储器(ROM,Read Only Memory)、随机存取记忆体(RAM,Random Access Memory)、磁盘或光盘等。
由于该计算机可读存储介质中所存储的指令,可以执行本发明实施例所提供的任一种显示过驱控制方法中的步骤,因此,可以实现本发明实施例所提供的任一种显示过驱控制方法所能实现的有益效果,详见前面的实施例,在此不再赘述。
根据本申请的一个方面,还提供了一种计算机程序产品或计算机程序,该计算机程序产品或计算机程序包括计算机指令,该计算机指令存储在计算机可读存储介质中。电子设备的处理器从计算机可读存储介质读取该计算机指令,处理器执行该计算机指令,使得该电子设备执行上述实施例中的各种可选实现方式中提供的方法。
以上对本发明实施例所提供的一种显示过驱控制方法、装置、电子设备和存储介质进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (20)

  1. 一种显示过驱控制方法,其特征在于,包括:
    获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
    根据所述过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度;
    基于预设的像素信号幅度与参考过驱系数之间的映射关系以及所述像素信号幅度,从所述参考过驱系数中确定所述像素信号幅度对应的过驱系数;
    基于所述过驱控制参考参数、像素信号幅度和过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值;
    根据分区热量累计值和所述过驱控制参考参数对各所述显示屏分区的过驱系数进行热量控制修正,得到各所述显示屏分区的目标过驱系数;
    通过各所述显示屏分区对应的所述目标过驱系数对所述显示设备进行过驱控制。
  2. 根据权利要求1所述的显示过驱控制方法,其特征在于,所述获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值之前,所述方法还包括:
    获取待显示图像帧,针对所述待显示图像帧进行分区处理得到所述待显示图像帧对应的多个虚拟分区;
    根据各所述虚拟分区中各像素点对应的像素信号,计算各所述虚拟分区的像素信号平均值以及像素信号最大值作为像素信号统计值。
  3. 根据权利要求2所述的显示过驱控制方法,其特征在于,所述获取待显示图像帧,针对所述待显示图像帧进行分区处理得到所述待显示图像帧对应的多个虚拟分区,包括:
    获取待显示图像帧;
    根据所述待显示图像帧中各像素点对应的像素信号,对所述待显示图像帧进行不均匀分区处理,得到所述待显示图像帧对应的多个虚拟分区。
  4. 根据权利要求1所述的显示过驱控制方法,其特征在于,所述根据过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度,包括:
    根据所述过驱控制参考参数指示的各所述显示屏分区的显示屏分区位置,以及各所述虚拟分区对应的虚拟分区位置,确定各所述显示屏分区对应的虚拟分区集合;
    基于各所述虚拟分区集合中各所述虚拟分区的像素信号统计值,计算各所述显示屏分区对应的初始像素信号幅度;
    若所述初始像素信号幅度小于预设的幅度阈值,根据所述初始像素信号幅度、过驱控制参考参数和背光控制信息,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度。
  5. 根据权利要求4所述的显示过驱控制方法,其特征在于,所述基于各所述虚拟分区集合中各所述虚拟分区的像素信号统计值,计算各所述显示屏分区对应的初始像素信号幅度之前,所述方法还包括:
    获取预设的像素信号映射表,所述像素信号映射表中包括像素信号统计值与像素信号映射函数之间的对应关系;
    所述基于各所述虚拟分区集合中各所述虚拟分区的像素信号统计值,计算各所述显示屏分区对应的初始像素信号幅度,包括:
    基于各所述虚拟分区集合中各所述虚拟分区的像素信号统计值以及所述像素信号映射表,确定各所述像素信号统计值对应的目标像素信号映射函数;
    通过所述目标像素信号映射函数对各所述像素信号统计值进行映射,得到各所述虚拟分区的像素信号映射值;
    基于各所述像素信号映射值计算各所述显示屏分区对应的初始像素信号幅度。
  6. 根据权利要求5所述的显示过驱控制方法,其特征在于,所述像素信号统计值包括像素信号平均值;
    所述通过所述目标像素信号映射函数对各所述像素信号统计值进行映射,得到各所述虚拟分区的像素信号映射值,包括:
    通过所述目标像素信号映射函数对各所述像素信号平均值进行映射,得到各所述虚拟分区的像素信号平均映射值;
    所述基于各所述像素信号映射值计算各所述显示屏分区对应的初始像素信号幅度,包括:
    基于各所述像素信号平均映射值,计算各所述虚拟分区集合中各所述虚拟分区的所述像素信号平均映射值之和,得到各所述虚拟分区集合对应的像素信号幅度和;
    确定各所述虚拟分区集合中所述虚拟分区的分区数量,分别计算各所述虚拟分区集合对应的所述像素信号幅度和与所述分区数量之商,得到各所述虚拟分区集合对应的所述显示屏分区的初始像素信号幅度。
  7. 根据权利要求4所述的显示过驱控制方法,其特征在于,所述过驱控制参考参数包括最大过驱驱动电流;
    所述根据所述初始像素信号幅度、过驱控制参考参数和背光控制信息,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度,包括:
    将所述初始像素信号幅度和背光控制信息相乘,计算所述显示屏分区的背光像素信号幅度;
    针对所述背光像素信号幅度与所述最大过驱驱动电流进行除法运算,得到在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度。
  8. 根据权利要求1所述的显示过驱控制方法,其特征在于,所述像素信号统计值包括像素信号最大值;
    所述基于预设的像素信号幅度与参考过驱系数之间的映射关系以及所述像素信号幅度,从所述参考过驱系数中确定所述像素信号幅度对应的过驱系数之前,所述方法还包括:
    根据所述过驱控制参考参数以及像素信号最大值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号最大幅度;
    所述基于预设的像素信号幅度与参考过驱系数之间的映射关系以及所述像素信号幅度,从所述参考过驱系数中确定所述像素信号幅度对应的过驱系数,包括:
    基于所述像素信号最大幅度和所述像素信号幅度建立过驱系数搜索索引;
    根据所述过驱系数搜索索引,从预设的像素信号幅度与参考过驱系数之间的映射关系中查找得到过驱系数。
  9. 根据权利要求1所述的显示过驱控制方法,其特征在于,各所述显示屏分区的过驱控制参考参数包括各所述显示屏分区的过驱持续时间基准、平均信号幅度最小值以及分区过驱权重;
    所述根据分区热量累计值和所述过驱控制参考参数对各所述显示屏分区的过驱系数进行热量控制修正,得到各所述显示屏分区的目标过驱系数,包括:
    分别针对各所述显示屏分区,计算各所述显示屏分区的所述过驱持续时间基准、平均信号幅度最小值以及分区过驱权重之间的乘积,得到各所述显示屏分区对应的热量累计上限;
    比较各所述显示屏分区的所述分区热量累计值和所述热量累计上限;
    针对所述分区热量累计值大于所述热量累计上限的过热显示屏分区,降低所述过热显示屏分区的过驱系数,以使得所述过热显示屏分区基于降低后的过驱系数对所述待显示图像帧进行过驱显示时得到的新的分区热量累计值不大于所述热量累计上限;
    将各所述过热显示屏分区的降低后的过驱系数作为各所述过热显示屏分区的目标过驱系数。
  10. 根据权利要求9所述的显示过驱控制方法,其特征在于,所述方法还包括:
    基于所述过热显示屏分区的位置信息,至少降低与所述过热显示屏分区存在位置相邻关系的相邻显示屏分区的过驱系数;
    将各所述相邻显示屏分区的降低后的过驱系数作为各所述相邻显示屏分区的目标过驱系数。
  11. 根据权利要求9所述的显示过驱控制方法,其特征在于,所述方法还包括:
    针对分区热量累计值不大于热量累计上限的过驱显示屏分区,放大过驱显示屏分区的过驱系数,以使得过驱显示屏分区基于放大后的过驱系数对待显示图像帧进行过驱显示时得到的新的分区热量累计值不大于热量累计上限。
  12. 根据权利要求1所述的显示过驱控制方法,其特征在于,各所述显示屏分区的过驱控制参考参数包括各所述显示屏分区的过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重,所述方法还包括:
    分别针对各所述显示屏分区,计算各所述显示屏分区的所述过热保护时间基准、平均信号幅度最小值以及分区过驱保护权重之间的乘积,得到各所述显示屏分区对应的热量保护阈值;
    检测各所述显示屏分区当前的真实分区热量累计值,比较各所述显示屏分区的所述真实分区热量累计值与所述热量保护阈值;
    针对所述真实分区热量累计值不小于所述热量保护阈值的显示屏分区,控制所述显示屏分区不进行过驱显示。
  13. 根据权利要求1所述的显示过驱控制方法,其特征在于,所述过驱控制参考参数包括最大过驱驱动电流;
    所述基于所述过驱控制参考参数、像素信号幅度和过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值,包括:
    基于所述过驱控制参考参数中的最大过驱驱动电流、像素信号幅度以及过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量增量值;
    获取各所述显示屏分区的历史热量累计值;
    根据各所述显示屏分区的所述历史热量累计值和所述分区热量增量值,计算在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值。
  14. 根据权利要求13所述的显示过驱控制方法,其特征在于,所述方法还包括:
    在显示所述待显示图像帧时,检测各所述显示屏分区当前的真实分区热量累计值;
    将所述真实分区热量累计值作为各所述显示屏分区的新的历史热量累计值。
  15. 根据权利要求1所述的显示过驱控制方法,其特征在于,所述获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值,包括:
    获取显示设备的多个显示屏分区的过驱控制参考参数以及待显示图像帧;
    根据所述显示屏分区,对所述待显示图像帧进行分块,得到与所述显示屏分区匹配的图像块;
    基于各所述图像块的像素信号处理得到背光控制信息;
    获取所述待显示图像帧的多个虚拟分区的像素信号统计值。
  16. 根据权利要求1-15任一项所述的显示过驱控制方法,其特征在于,所述获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值之前,所述方法还包括:
    获取待显示图像帧,以及所述显示设备的已显示图像帧;
    将所述待显示图像帧与所述已显示图像帧进行相似度匹配,得到所述待显示图像帧与各所述已显示图像帧之间的图像相似度;
    若存在所述图像相似度大于预设的相似度阈值,获取各显示屏分区在显示最大的图像相似度对应的已显示图像帧时的目标过驱系数;
    将所述最大的图像相似度对应的已显示图像帧的目标过驱系数作为所述待显示图像帧的目标过驱系数;
    执行所述通过各所述显示屏分区对应的所述目标过驱系数对所述显示设备进行过驱控制的步骤。
  17. 一种显示过驱控制装置,其特征在于,包括:
    参数获取单元,用于获取显示设备的多个显示屏分区的过驱控制参考参数、背光控制信息以及待显示图像帧的多个虚拟分区的像素信号统计值;
    幅度预测单元,用于根据所述过驱控制参考参数、背光控制信息以及像素信号统计值,预测在显示所述待显示图像帧时各所述显示屏分区的像素信号幅度;
    系数确定单元,用于基于预设的像素信号幅度与参考过驱系数之间的映射关系以及所述像素信号幅度,从所述参考过驱系数中确定所述像素信号幅度对应的过驱系数;
    热量累计值预测单元,用于基于所述过驱控制参考参数、像素信号幅度和过驱系数,预测在显示所述待显示图像帧时各所述显示屏分区的分区热量累计值;
    系数修正单元,用于根据分区热量累计值和所述过驱控制参考参数对各所述显示屏分区的过驱系数进行热量控制修正,得到各所述显示屏分区的目标过驱系数;
    过驱控制单元,用于通过各所述显示屏分区对应的所述目标过驱系数对所述显示设备进行过驱控制。
  18. 一种电子设备,其特征在于,包括存储器和处理器;所述存储器存储有应用程序,所述处理器用于运行所述存储器内的应用程序,以执行权利要求1至16任一项所述的显示过驱控制方法中的步骤。
  19. 一种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多条指令,所述指令适于处理器进行加载,以执行权利要求1至16任一项所述的显示过驱控制方法中的步骤。
  20. 一种计算机程序产品,包括计算机程序或指令,其特征在于,所述计算机程序或指令被处理器执行时实现如权利要求1至16中任一项所述的显示过驱控制方法的步骤。
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