Vehicle-mounted display equipment and backlight brightness adjusting method of vehicle-mounted display equipment

Abstract

The embodiment of the invention belongs to the display equipment technology, and provides vehicle-mounted display equipment and a backlight brightness adjusting method of the vehicle-mounted display equipment. The vehicle-mounted display equipment comprises a display screen, the display screen is divided into a plurality of backlight partitions, and the display screen is used for displaying images of different display sizes. The display screen further comprises a backlight module, the backlight module is connected with the display screen and used for emitting backlight, and the backlight is used for adjusting the backlight brightness of a display image in the display screen. The processor is connected with the backlight module and the display screen and used for obtaining the full-screen size of the display screen and the display size of a current image of the display screen, determining regional light control adjustment parameters of the current image of the display screen according to the full-screen size and the display size, and adjusting the current image of the display screen according to the regional light control adjustment parameters. And adjusting the backlight brightness of the current image in the display screen. According to the method and the device, the determined regional light control adjustment parameter is more suitable for backlight adjustment of the current display image, and the display effect of the image is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to display device technology, and more specifically, to a vehicle-mounted display device and a backlight brightness adjustment method of the vehicle-mounted display device. Background Art

[0002] With the development of technology, the application of vehicle-mounted display screens is becoming more and more extensive. In order to improve the display effect of vehicle-mounted display screen images, more and more vehicle-mounted display screens adjust the backlight brightness of the displayed image by using the local dimming function.

[0003] In the prior art, when adjusting the backlight brightness of an image, no matter what the display size of the image is, the adjustment is performed using the same regional light control adjustment parameters.

[0004] However, the existing technology for adjusting the image backlight brightness makes the image displayed on the vehicle display screen unclear, affecting the user experience. Summary of the invention

[0005] The embodiments of the present application provide a vehicle-mounted display device and a method for adjusting the backlight brightness of the vehicle-mounted display device, which are used to solve the problem that the method of adjusting the image backlight brightness in the prior art makes the image displayed on the vehicle-mounted display screen not clear enough, affecting the user experience.

[0006] In a first aspect, an embodiment of the present application provides a vehicle-mounted display device, the vehicle-mounted display device comprising:

[0007] A display screen, the display screen being divided into a plurality of backlight partitions, the display screen being configured to: display images of different display sizes;

[0008] A backlight module, the backlight module is connected to the display screen, and the backlight module is configured to: emit backlight, and the backlight is used to adjust the backlight brightness of the image displayed on the display screen;

[0009] A processor, the processor is connected to the backlight module and the display screen respectively, and the processor is configured as follows:

[0010] Obtaining the full screen size of the display screen and the display size of the current image on the display screen;

[0011] Determine the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size;

[0012] The backlight brightness of the current image in the display screen is adjusted according to the regional light control adjustment parameter.

[0013] In the present application, the regional light control adjustment parameters of the current image are determined more accurately based on the full-screen size of the display screen and the display size of the currently displayed image. The backlight brightness of the image is adjusted according to the accurate regional light control adjustment parameters, thereby improving the display clarity of the image and enhancing the user experience.

[0014] In some embodiments of the present application, when the processor is configured to determine the regional light control adjustment parameters of the current image of the display screen according to the full screen size and the display size, the processor is specifically configured as follows:

[0015] Obtaining the arrangement data of the backlight partitions;

[0016] Determining a first area of ​​at least one backlight partition according to the arrangement data, wherein the areas of the plurality of backlight partitions are the same;

[0017] Determine, according to the display size of the current image, a target backlight partition where at least one corner edge of the display size is located;

[0018] Acquire a second area occupied by the display size of the current image in the target backlight partition;

[0019] Determine a regional light control adjustment parameter of the current image according to the first area and the second area.

[0020] In the present application, by determining the first area of ​​the target backlight partition and determining the second area occupied by the current image in the target backlight partition, it is convenient to subsequently determine the regional light control adjustment parameters of the current image according to the first area and the second area.

[0021] In some embodiments of the present application, when the processor is configured to determine the first area of ​​at least one backlight partition according to the arrangement mode data, the processor is specifically configured to:

[0022] Determining the number of the backlight partitions according to the arrangement;

[0023] A first area of ​​at least one backlight partition is determined according to the full screen size of the display screen and the number of the backlight partitions.

[0024] In the present application, by determining the area of ​​the backlight partition according to the number of the backlight partitions, the determined first area of ​​the target backlight partition is made more accurate.

[0025] In some embodiments of the present application, when the processor is configured to determine the regional light control adjustment parameter of the current image according to the first area and the second area, the processor is specifically configured as follows:

[0026] Calculating a ratio of the second area to the first area according to the first area and the second area to obtain an area ratio;

[0027] According to the area ratio, the regional light control adjustment parameter of the current image is determined from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter.

[0028] In the present application, the area ratio is obtained by calculating the ratio of the second area to the first area, and then the regional light control adjustment parameters corresponding to the area ratio are determined from a pre-stored mapping relationship based on the area ratio, so that the determined regional light control adjustment parameters are more suitable for backlight adjustment of the currently displayed image, thereby improving the display effect of the current image.

[0029] In some embodiments of the present application, different area ratio intervals and corresponding regional light control adjustment parameters are stored in the mapping relationship.

[0030] In the present application, by presetting the mapping relationship, it is convenient to determine the regional light control adjustment parameters suitable for the current image display size according to the mapping relationship.

[0031] In some embodiments of the present application, when the processor is configured to determine the regional light control adjustment parameter of the current image from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter according to the area ratio, the processor is specifically configured as follows:

[0032] According to the area ratio, determining the target area ratio interval to which the area ratio belongs from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter;

[0033] According to the target area ratio interval, a regional light control adjustment parameter of the current image corresponding to the target area ratio interval is determined.

[0034] In the present application, a target area ratio interval is determined from a mapping relationship according to the area ratio, and then a regional light control adjustment parameter is determined according to the target area ratio interval, so that the obtained regional light control adjustment parameter is more accurate.

[0035] In some embodiments of the present application, the processor is further configured to:

[0036] In response to a user operation, obtaining an image display size control instruction;

[0037] According to the control instruction, the display size of the image on the display screen is adjusted.

[0038] In the present application, flexible control of the image display size is achieved by controlling the image display size instruction to meet the user's usage needs.

[0039] In a second aspect, an embodiment of the present application provides a method for adjusting the backlight brightness of a vehicle-mounted display device, the method comprising:

[0040] The processor obtains the full screen size of the display screen and the display size of the current image on the display screen;

[0041] The processor determines the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size;

[0042] The processor adjusts the backlight brightness of the current image in the display screen according to the regional light control adjustment parameter.

[0043] In the present application, the regional light control adjustment parameters of the current image are determined more accurately based on the full-screen size of the display screen and the display size of the currently displayed image. The backlight brightness of the image is adjusted according to the accurate regional light control adjustment parameters, thereby improving the display clarity of the image and enhancing the user experience.

[0044] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer execution instructions are stored. When the computer execution instructions are executed by a processor, the backlight brightness adjustment method of the vehicle-mounted display device described in the second aspect is implemented.

[0045] The present application provides a computer-readable storage medium to provide storage conditions for executing a backlight brightness adjustment method for a vehicle-mounted display device.

[0046] In a fourth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the backlight brightness adjustment method of the vehicle-mounted display device described in the second aspect.

[0047] The computer program product provided in this application provides an operating program for executing a backlight brightness adjustment method for a vehicle-mounted display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0049] Figure 1 An application scenario diagram of a vehicle-mounted display device provided in this application;

[0050] Figure 2 A schematic diagram of the structure of a vehicle-mounted display device provided in an embodiment of the present application;

[0051] Figure 3A A schematic diagram of a backlight partition provided in an embodiment of the present application;

[0052] Figure 3B A schematic diagram of another backlight partition provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of an image display size provided in an embodiment of the present application;

[0054] Figure 5 A schematic flow chart of a method for determining regional light control adjustment parameters of a current image on a display screen provided in an embodiment of the present application;

[0055] Figure 6 A schematic diagram of the image display size in a display screen provided in an embodiment of the present application;

[0056] Figure 7 A schematic diagram of a first area and a second area in a display screen provided in an embodiment of the present application;

[0057] Figure 8 A schematic diagram of a flow chart of a backlight brightness adjustment method for a vehicle-mounted display device provided in an embodiment of the present application;

[0058] Fig. 9 A schematic diagram of backlight brightness adjustment of a vehicle-mounted display device provided in an embodiment of the present application;

[0059] Fig.10 A backlight brightness adjustment device for a vehicle-mounted display device is provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0061] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0062] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0063] The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise indicated. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, for example, they can be implemented in an order other than those given in the diagrams or descriptions of the embodiments of this application.

[0064] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0065] The term "module" as used in this application refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functions associated with that element.

[0066] With the rapid development of display technology, display devices are being used more and more widely in many fields, such as in the automotive field. By installing display devices on vehicles, it provides an interactive medium for drivers to set vehicle information and entertain themselves on the in-vehicle display screen.

[0067] In recent years, more and more in-vehicle display devices have begun to be equipped with local dimming functions to adjust the backlight brightness of the display image, thereby improving the display quality of the image.

[0068] The display size of the image in the display screen can be the full screen size of the display screen, or a partial size of the full screen size after scaling. In the prior art, when adjusting the backlight brightness of images of different display sizes, the same regional light control adjustment parameters are used for adjustment.

[0069] However, the existing technology for adjusting the image backlight brightness makes it easy for the displayed image to have large image halos, black fields not being dark enough, etc., which makes the image display unclear and affects the user experience.

[0070] Therefore, in response to the above-mentioned technical problems in the prior art, the present application proposes a vehicle-mounted display device and a backlight brightness adjustment method for the vehicle-mounted display device, which determines the local dimming adjustment parameters of the regional light control corresponding to the area size of the image on the display screen according to the area size of the display size, so that the determined local dimming adjustment parameters of the regional light control are more accurate, thereby improving the display effect of the displayed image.

[0071] In order to facilitate understanding of the method of the present application, an application scenario diagram of the present application is exemplified below: Figure 1 This is an application scenario diagram of a vehicle-mounted display device provided in this application, such as Figure 1 As shown:

[0072] exist Figure 1 In the embodiment, the full screen size 101 of the display screen of the vehicle-mounted display device 10 is 43 inches. The user can adjust the display size 102 of the image on the display screen to any size smaller than the full screen size, such as 32 inches or 37 inches, according to his / her own use requirements. When the user adjusts the display size of different images, since the backlight partition of the full screen cannot match the display size of the image at this time, it is necessary to adjust the regional light control adjustment parameters of the current image to improve the display effect of the image.

[0073] It is understandable that the type, size, etc. of the vehicle-mounted display device is not limited in this application. The above scenarios are only used for illustration and are not intended to limit this application.

[0074] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0075] Figure 2 A schematic diagram of the structure of a vehicle-mounted display device provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the vehicle-mounted display device includes: a display screen 201 , a backlight module 202 and a processor 203 .

[0076] The connection relationship can be:

[0077] The display screen 201 is connected to the backlight module 202 , and the processor 203 is connected to the display screen 201 and the backlight module 202 respectively.

[0078] Its functions are:

[0079] The display screen 201 is configured to display images of different display sizes.

[0080] In this embodiment, the display screen 201 can be divided into a plurality of backlight subareas 02. Figure 3A A schematic diagram of a backlight partition provided in an embodiment of the present application, such as Figure 3A As shown, the display screen 201 can be divided into 4 rows and 6 columns, with a total of 24 backlight sub-areas 02, and the area size of each backlight sub-area is the same. Figure 3B A schematic diagram of another backlight partition provided in an embodiment of the present application, such as Figure 3BAs shown, the display screen 201 can be divided into 10 rows and 7 columns, with a total of 70 backlight partitions. Correspondingly, the area size of each backlight partition is the same.

[0081] It can be understood that the number of the above-mentioned backlight partitions is only used for illustration and can be determined according to the model of the actual display device, etc.

[0082] For example, assuming that the full screen size of the display screen 201 is 32 inches, the display size of the image can be 32 inches, 27 inches, or 24 inches.

[0083] The backlight module 202 is configured to emit backlight, and the backlight is used to adjust the backlight brightness of the image displayed on the display screen 201.

[0084] In the vehicle-mounted display device, the display screen 201 itself does not emit light, but is illuminated by the backlight module 202 behind it, and the backlight module 202 and the display screen 201 together constitute a display module. The backlight module 202 is used to provide sufficient brightness and uniformly distributed backlight light source, so that the display screen 201 displays a clear image.

[0085] The processor 203 is configured as follows:

[0086] The full screen size of the display screen 201 and the display size of the current image of the display screen 201 are obtained.

[0087] In this embodiment, the processor 203 may also be a controller, a main control chip, or an operating system, etc., and this application does not limit its type.

[0088] The processor 203 obtains the full screen size of the display device, for example, 32 inches, and obtains the display size of the current image of the display screen 201, for example, 24 inches.

[0089] It can be seen that at this time, the image in the display screen 201 only occupies a part of the full screen size, such as Figure 4 As shown, Figure 4 A schematic diagram of an image display size provided in an embodiment of the present application.

[0090] The processor 203 is further configured to determine the regional light control adjustment parameters of the current image of the display screen 201 according to the full screen size and the display size.

[0091] The specific method of determining the regional light control adjustment parameters of the current image of the display screen 201 according to the full screen size and the display size will be described in detail in the following embodiments. Please refer to the following embodiments.

[0092] The processor 203 is further configured to adjust the backlight brightness of the current image in the display screen 201 according to the regional light control adjustment parameter.

[0093] The local dimming adjustment parameters include but are not limited to the following: aperture parameters, response speed, local dimming intensity, etc.

[0094] After the processor 203 determines the local dimming adjustment parameters corresponding to the image display size, it adjusts the aperture parameters, response speed, and local dimming intensity according to the specific values.

[0095] It is understandable that the type of the vehicle-mounted display device is not limited in this application, and it may be a liquid crystal display device (LCD) or a light emitting diode display device (LED), etc. In this application, the area size of the full screen size of the display device is also not limited.

[0096] In addition, the display device in the present application can be used in other fields besides the vehicle field, such as household field, education field, etc. The present application does not limit the specific application scenarios.

[0097] In the above embodiment of the present application, the vehicle-mounted display device includes a display screen 201, a backlight module 202 and a processor 203. Among them, the display screen 201 is configured to display images of different display sizes, the backlight module 202 is configured to emit backlight to adjust the backlight brightness of the image displayed on the display screen 201, and the processor 203 is configured to obtain the full screen size of the display screen 201 and the display size of the current image of the display screen 201, and determine the regional light control adjustment parameters of the current image of the display screen 201 according to the full screen size and the display size, and then adjust the backlight brightness of the current image in the display screen 201 according to the regional light control adjustment parameters. The method of this embodiment is more accurate in determining the regional light control adjustment parameters of the current image of the display screen 201 according to the full screen size of the display screen 201 and the display size of the current image of the display screen 201.

[0098] Furthermore, based on the above embodiment, the following embodiment describes in detail the process of the processor determining the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size.

[0099] Figure 5 A flow chart of a method for determining a regional light control adjustment parameter of a current image on a display screen provided in an embodiment of the present application is shown as follows: Figure 5 As shown, the processor is configured to perform the following steps:

[0100] S501, obtaining arrangement data of backlight partitions.

[0101] The arrangement of backlight partitions of display devices of different models may be different. For example, it may be 6 rows and 3 columns, or 8 rows and 4 columns, etc. It is understandable that the above arrangement is only for illustration and does not limit the present application.

[0102] S502: Determine a first area of ​​at least one backlight partition according to the arrangement data.

[0103] One possible implementation is:

[0104] Determine the number of backlight partitions based on the arrangement.

[0105] A first area of ​​at least one backlight partition is determined according to the full screen size of the display screen and the number of backlight partitions.

[0106] For example,

[0107] Assuming that the arrangement data of the backlight partitions is 8 rows and 4 columns, the number of backlight partitions can be determined to be 32 according to the arrangement data. Assuming that the full screen size of the display screen is 32 inches, the area of ​​each backlight partition can be determined according to 32 inches and the number of 32 backlight partitions, wherein the area of ​​each backlight partition is the same.

[0108] In this embodiment, the processor may also directly obtain the area of ​​the backlight partition from the attribute data according to the pre-stored attribute data of the backlight partition.

[0109] S503: Determine, according to the display size of the current image, a target backlight partition where at least one corner edge of the display size is located.

[0110] Figure 6 A schematic diagram of an image display size in a display screen provided in an embodiment of the present application, such as Figure 6 As shown, the display size of the image is usually a rectangle, and the four corners on the diagonal of the rectangle are corner edges. According to the position of the corner edge, at least one target backlight partition where the corner edge is located can be determined. Figure 6 In the example, the target backlight partitions can be a1, a2, a3, and a4.

[0111] S504: Obtain a second area occupied by the display size of the current image in the target backlight subarea.

[0112] In this embodiment, the processor can only obtain the area occupied by the display size of the current image in one target partition because when the image in the display screen is generated, it will be centered with the center point of the display screen as the reference. Therefore, the second area occupied by the display size of the current image in different target partitions is the same.

[0113] S505: Determine regional light control adjustment parameters of the current image according to the first area and the second area.

[0114] Specifically,

[0115] According to the first area and the second area, the ratio of the second area to the first area is calculated to obtain the area ratio.

[0116] According to the area ratio, the regional light control adjustment parameter of the current image is determined from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter.

[0117] In the above embodiment of the present application, the processor obtains the arrangement data of the backlight partitions, and determines the first area of ​​at least one backlight partition according to the arrangement data, and determines the target backlight partition where at least one corner edge of the display size is located according to the display size of the current image. Then, the second area occupied by the display size of the current image in the target backlight partition is obtained, and the regional light control adjustment parameters of the current image are determined according to the first area and the second area. The method of this embodiment improves the display effect of the current image and enhances the user experience by making the regional light control adjustment parameters of the current image determined according to the first area and the second area more accurate.

[0118] Furthermore, this embodiment uses a specific example to illustrate a process in which the processor determines the regional light control adjustment parameters of the current image according to the first area and the second area.

[0119] As shown in the above embodiments, the mapping relationship between the area ratio and the regional light control adjustment parameter is pre-stored in the present application, and different area ratio intervals and their corresponding regional light control adjustment parameters are stored in the mapping relationship.

[0120] Exemplarily, the mapping relationship table may be shown in Table 1:

[0121] Table 1

[0122] Area ratio range Local dimming adjustment parameters [0,c1) Adjustment parameter d1 [c1,c2) Adjustment parameter d2 [c2,c3) Adjustment parameter d3 [c3,c4) Adjustment parameter d4 [c4,c5) Adjustment parameter d5 ...... ......

[0123] Among them, 0 <c1<c2<c3<c4<c5。

[0124] After determining the area ratio, if the area ratio is in the interval [0, c1), the regional light control adjustment parameter of the current image is determined to be the adjustment parameter d1; if the area ratio is in the interval [c1, c2), the regional light control adjustment parameter of the current image is the adjustment parameter d2, and so on.

[0125] It can be understood that the range division of the area ratio intervals in Table 1 can be determined according to the backlight effects of different models of display devices, and this application does not limit it.

[0126] Figure 7Schematic diagram of the first area and the second area in a display screen provided by an embodiment of the present application. As Figure 7 shown, in Figure 7 , the first area is a1 and the second area is b1. The calculated ratio of the second area to the first area is b1 / a1, assumed to be 9%. Assume c1 is 10%. Thus, b1 / a1 = 9% < c1 = 10%, and the determined regional dimming adjustment parameter for the current image is adjustment parameter d1.

[0127] Assume that the calculated ratio of the second area to the first area b1 / a1 is 95%. Assume c4 is 90% and c5 is 98%. Thus, c4 = 90% < b1 / a1 = 95% < c5 = 98%, and the determined regional dimming adjustment parameter for the current image is adjustment parameter d5.

[0128] In the present application, the regional dimming adjustment parameters include but are not limited to the following: aperture parameters, response speed, regional dimming (Local dimming) intensity, etc.

[0129] Specifically, the setting methods of the regional dimming (local dimming) adjustment parameters corresponding to different area ratio intervals can be:

[0130] When the area ratio is in the interval [0, c1), the adjustment parameter d1 corresponds to the aperture parameter being the first preset number of aperture turns opened, the response speed being the preset threshold response speed multiplied by the first preset speed coefficient, and the regional dimming (Local dimming) intensity being the preset threshold dimming intensity multiplied by the first preset intensity coefficient.

[0131] When the area ratio is in the interval [c1, c2), the adjustment parameter d2 corresponds to the aperture parameter being the second preset number of aperture turns opened, the response speed being the preset threshold response speed multiplied by the second preset speed coefficient, and the regional dimming (Local dimming) intensity being the preset threshold dimming intensity multiplied by the second preset intensity coefficient.

[0132] When the area ratio is in the interval [c2, c3), the adjustment parameter d3 corresponds to the aperture parameter being the third preset number of aperture turns opened, the response speed being the preset threshold response speed multiplied by the third preset speed coefficient, and the regional dimming (Local dimming) intensity being the preset threshold dimming intensity multiplied by the third preset intensity coefficient. ......

[0134] Among them, the first preset number of aperture turns is less than the second preset number of aperture turns which is less than the third preset number of aperture turns, the first preset speed coefficient is greater than the second preset speed coefficient which is greater than the third preset speed coefficient, and the first preset intensity coefficient is greater than the second preset intensity coefficient which is greater than the first preset intensity coefficient.

[0135] In summary, the larger the area ratio, the more the second area occupies in the first area, almost covering it. In order to make the image display color not too bright or plain, as the area ratio increases, the aperture can be opened more, the response speed can be reduced, and the local dimming intensity can be reduced.

[0136] It is understandable that the preset number of laps, preset speed coefficient and preset intensity coefficient are not limited in the present application, and they can be set according to the model of the actual display device, the timing image color display effect, etc.

[0137] The method in which the processor determines the regional light control adjustment parameters of the current image in this embodiment can be applied to display devices of multiple models. Table 2 is the area ratio of display devices of multiple models provided in the embodiment of the present application, as shown in Table 2:

[0138] Table 2

[0139]

[0140] As shown in Table 2, it is assumed that the area (first area) of the backlight partition in model 1 is a1, the area (first area) of the backlight partition in model 2 is a2, ..., and the area (first area) of the backlight partition in model 4 is a4, and it is assumed that the area (second area) occupied by the display size of the image in the backlight partition in the display devices of different models is the same as b1. It can be seen from Table 2 that even if the full screen sizes of display devices of different models are different, and the backlight partition areas of display devices of different models are different, it is still possible to determine the regional light control adjustment parameters of the image based on the area ratios of different models. Therefore, the present application can be applied to vehicle-mounted display devices of various models.

[0141] In the present application, a backlight brightness adjustment method for a vehicle-mounted display device is also provided, and the method can be implemented by software, hardware, or a combination of software and hardware. Figure 8 A flow chart of a backlight brightness adjustment method for a vehicle-mounted display device provided in an embodiment of the present application is shown in FIG. Figure 8 As shown, the method comprises the following steps:

[0142] S801. The processor obtains the full screen size of the display screen and the display size of the current image of the display screen.

[0143] S802: The processor determines the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size.

[0144] S803: The processor adjusts the backlight brightness of the current image on the display screen according to the regional light control adjustment parameter.

[0145] In the above embodiments of the present application, the specific implementation steps and technical effects please refer to the above embodiments, and this embodiment will not be repeated.

[0146] In order to facilitate understanding of the method of the present application, Fig. 9 The embodiment shown illustrates an application scenario of the backlight brightness adjustment method of the vehicle-mounted display device in the present application.

[0147] Fig. 9 A schematic diagram of backlight brightness adjustment of a vehicle-mounted display device provided in an embodiment of the present application is shown in FIG. Fig. 9 As shown:

[0148] S901. When the vehicle-mounted display device is started, the processor obtains the full-screen size of the display screen of the vehicle-mounted display device and the display size of the current image on the display screen according to a startup input signal.

[0149] S902. Determine, based on the display size of the image, a target backlight partition where at least one corner edge of the display size is located, and obtain a first area of ​​the target backlight partition, and obtain a second area occupied by the display size of the image in the target backlight partition, and then calculate a ratio of the second area to the first area to obtain an area ratio.

[0150] S903 . According to the area ratio, determine the target area ratio interval to which the area ratio belongs from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter.

[0151] S904: Determine, according to the target area ratio interval, a regional light control adjustment parameter of the current image corresponding to the target area ratio interval.

[0152] S905: After a period of time, if the processor obtains the image display size control instruction in response to the user's operation and adjusts the display size of the image on the display screen according to the control instruction, the processor needs to re-acquire the full screen size of the display screen of the vehicle-mounted display device and the display size of the current image on the display screen.

[0153] S906: According to the display size of the image, determine the target backlight partition where at least one corner edge of the display size is located, obtain a first area of ​​the target backlight partition, and obtain a second area occupied by the display size of the image in the target backlight partition. Then calculate the ratio of the second area to the first area to obtain an area ratio.

[0154] S907: Determine, based on the area ratio, whether the previously determined target area ratio interval has changed.

[0155] S908. If a change occurs, determine the new target area ratio interval to which the new area ratio belongs from the pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter, and determine the new regional light control adjustment parameter of the current image corresponding to the new target area ratio interval based on the new target area ratio interval.

[0156] S909: If there is no change, maintain the previous regional light control adjustment parameters.

[0157] The method of this embodiment determines the regional light control adjustment parameters of the current image more accurately according to the full-screen size of the display screen and the display size of the currently displayed image, and adjusts the backlight brightness of the image according to the accurate regional light control adjustment parameters, thereby improving the display clarity of the image and enhancing the user experience.

[0158] Fig.10 A backlight brightness adjustment device for a vehicle-mounted display device provided in an embodiment of the present application includes an acquisition module 1001 , a determination module 1002 , and a processing module 1003 .

[0159] The acquisition module 1001 is used to acquire the full screen size of the display screen and the display size of the current image on the display screen.

[0160] The determination module 1002 is used to determine the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size.

[0161] The processing module 1003 is used to adjust the backlight brightness of the current image in the display screen according to the regional light control adjustment parameters.

[0162] In a possible implementation manner, the determining module 1002 is specifically configured to:

[0163] Get the backlight partition arrangement data.

[0164] A first area of ​​at least one backlight partition is determined according to the arrangement data, and the areas of the plurality of backlight partitions are the same.

[0165] According to the display size of the current image, a target backlight partition where at least one corner edge of the display size is located is determined.

[0166] A second area occupied by the display size of the current image in the target backlight partition is obtained.

[0167] Determine a regional light control adjustment parameter of the current image according to the first area and the second area.

[0168] In a possible implementation manner, the determining module 1002 is specifically configured to:

[0169] Determine the number of backlight partitions based on the arrangement.

[0170] A first area of ​​at least one backlight partition is determined according to the full screen size of the display screen and the number of backlight partitions.

[0171] In a possible implementation manner, the determining module 1002 is specifically configured to:

[0172] According to the first area and the second area, the ratio of the second area to the first area is calculated to obtain the area ratio.

[0173] According to the area ratio, the regional light control adjustment parameter of the current image is determined from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter.

[0174] One possible implementation manner is that different area ratio intervals and corresponding regional light control adjustment parameters are stored in the mapping relationship.

[0175] In a possible implementation manner, the determining module 1002 is specifically configured to:

[0176] According to the area ratio, the target area ratio interval to which the area ratio belongs is determined from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter.

[0177] According to the target area ratio interval, a regional light control adjustment parameter of the current image corresponding to the target area ratio interval is determined.

[0178] In a possible implementation manner, the determining module 1002 is further configured to:

[0179] In response to a user's operation, an image display size control instruction is acquired.

[0180] According to the control command, the display size of the image on the display screen is adjusted.

[0181] The backlight brightness adjustment device for a vehicle display device provided in the embodiment of the present application can implement the backlight brightness adjustment method for a vehicle display device in the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here. Fig.10 The division of the modules shown is only a schematic diagram, and the present application does not limit the division of the modules and the naming of the modules.

[0182] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores computer execution instructions, and the computer execution instructions are used for the backlight brightness adjustment method of the vehicle-mounted display device in the above-mentioned embodiment.

[0183] The present application also provides a computer program product, which includes a computer program stored in a readable storage medium. At least one module of the display device can read the program from the readable storage medium, and at least one module executes the program so that the display device implements the backlight brightness adjustment method of the vehicle-mounted display device provided by the various embodiments described above.

[0184] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0185] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A vehicle-mounted display device, characterized in that: The vehicle-mounted display device comprises: A display screen, the display screen being divided into a plurality of backlight partitions, the display screen being configured to: display images of different display sizes; A backlight module, the backlight module is connected to the display screen, and the backlight module is configured to: emit backlight, and the backlight is used to adjust the backlight brightness of the image displayed on the display screen; A processor, the processor is connected to the backlight module and the display screen respectively, and the processor is configured as follows: Obtaining the full screen size of the display screen and the display size of the current image on the display screen; Determine the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size; The backlight brightness of the current image in the display screen is adjusted according to the regional light control adjustment parameter.

2. The vehicle-mounted display device according to claim 1, characterized in that: When the processor is configured to determine the regional light control adjustment parameters of the current image of the display screen according to the full screen size and the display size, the processor is specifically configured as follows: Obtaining the arrangement data of the backlight partitions; Determining a first area of ​​at least one backlight partition according to the arrangement data, wherein the areas of the plurality of backlight partitions are the same; Determine, according to the display size of the current image, a target backlight partition where at least one corner edge of the display size is located; Acquire a second area occupied by the display size of the current image in the target backlight partition; Determine a regional light control adjustment parameter of the current image according to the first area and the second area.

3. The vehicle-mounted display device according to claim 2, characterized in that: When the processor is configured to determine a first area of ​​at least one backlight partition according to the arrangement mode data, the processor is specifically configured to: Determining the number of the backlight partitions according to the arrangement; A first area of ​​at least one backlight partition is determined according to the full screen size of the display screen and the number of the backlight partitions.

4. The vehicle-mounted display device according to claim 3, characterized in that: When the processor is configured to determine the regional light control adjustment parameter of the current image according to the first area and the second area, the processor is specifically configured as follows: Calculating a ratio of the second area to the first area according to the first area and the second area to obtain an area ratio; According to the area ratio, the regional light control adjustment parameter of the current image is determined from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter.

5. The vehicle-mounted display device according to claim 4, characterized in that: The mapping relationship stores different area ratio intervals and corresponding regional light control adjustment parameters.

6. The vehicle-mounted display device according to claim 5, characterized in that: When the processor is configured to determine the regional light control adjustment parameter of the current image from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter according to the area ratio, the processor is specifically configured as follows: According to the area ratio, determining the target area ratio interval to which the area ratio belongs from a pre-stored mapping relationship between the area ratio and the regional light control adjustment parameter; According to the target area ratio interval, a regional light control adjustment parameter of the current image corresponding to the target area ratio interval is determined.

7. The vehicle-mounted display device according to any one of claims 1 to 6, characterized in that: The processor is further configured to: In response to a user operation, obtaining an image display size control instruction; According to the control instruction, the display size of the image on the display screen is adjusted.

8. A method for adjusting the backlight brightness of a vehicle-mounted display device, characterized in that: The method comprises: The processor obtains the full screen size of the display screen and the display size of the current image on the display screen; The processor determines the regional light control adjustment parameters of the current image on the display screen according to the full screen size and the display size; The processor adjusts the backlight brightness of the current image in the display screen according to the regional light control adjustment parameter.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by the processor, the backlight brightness adjustment method of the vehicle-mounted display device according to claim 8 is implemented.

10. A computer program product, characterized in that It includes a computer program, which, when executed by a processor, implements the backlight brightness adjustment method of the vehicle-mounted display device as claimed in claim 8.

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