Display device and operating method thereof
By using the cursor position to determine the area of interest and controlling the local dimming function in the display device, the resource waste problem caused by the activation of the local dimming function on a large display screen is solved, and efficient dimming control for different positions is achieved.
Patent Information
- Application Number
- CN202311005238.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-10
- Publication Date
- 2025-02-18
AI Technical Summary
When existing monitors enable local dimming on large display screens, they consume a lot of computing resources. However, since users usually only focus on specific areas, local dimming function for non-focused areas is invalid, resulting in waste of resources.
By introducing a computing unit and a local dimming driving unit into the display device, the focus area is determined using the cursor position, and the local dimming function is enabled or turned off according to the focus area, thereby saving hardware computing resources.
It realizes the independent activation or disable of local dimming function for different locations in the image data, reducing the waste of hardware computing resources and improving display efficiency.
Smart Images
Figure CN119473073A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an electronic device, and more particularly to a display device supporting local dimming control and an operating method thereof. Background Art
[0002] Conventional displays utilize local dimming for the entire image on the display panel. Local dimming refers to local backlight adjustment. The backlighting elements can be adjusted differently in different areas of the display panel based on the brightness of the image. This allows the brightness of bright areas of the displayed image to be maximized, while dark areas can be dimmed (or even have the backlight turned off) to increase contrast. Furthermore, this reduced brightness in dark areas reduces backlight power consumption.
[0003] However, local dimming requires the computing resources of the Graphics Processing Unit (GPU). In the case of large display screens (a single display panel or a display wall composed of multiple display panels), users usually only focus on a specific area of the large display screen (the focus area). For other areas that are perceived by the user's peripheral vision (or even areas that are not seen by the eyes, collectively referred to as non-focus areas), users usually find it difficult to feel the display effect enhanced by local dimming on the non-focus areas. In other words, enabling the local dimming function for non-focus areas is a waste of computing resources. Summary of the Invention
[0004] The present invention provides a display device and an operating method thereof, which can independently enable or disable a local dimming function for different positions in image data.
[0005] The present invention provides a display device, comprising: a computing unit that generates at least one image data for display on at least one display panel, wherein the computing unit determines the position of a cursor in the at least one image data based on the operation of a user interface device, and defines a focus area corresponding to the cursor based on the position of the cursor; and a local dimming driving unit coupled to the computing unit, wherein the local dimming driving unit enables a local dimming function for the focus area corresponding to the position of the cursor, or disables the local dimming function for non-focus areas outside the focus area based on information from the computing unit.
[0006] Preferably, the display device includes a plurality of display panels, and the focus area is the entire display area of the display panel where the cursor is located among the plurality of display panels.
[0007] Preferably, the display panel of the display device displays a plurality of frames, and the focus area is the entire frame where the cursor is located among the plurality of frames.
[0008] Preferably, each of the plurality of frames is an application window.
[0009] Preferably, in response to the cursor being located on an object displayed on the display panel of the display device, the focus area is the entire object area corresponding to the object.
[0010] Preferably, the size of the focus area corresponding to the cursor position is adjusted via a user control interface.
[0011] Preferably, the computing unit includes: a central processing unit (CPU) for determining the position of the cursor based on an operation of the user interface device, and defining the region of interest corresponding to the cursor based on the position of the cursor; and a graphics processor (GPU) coupled to the CPU, wherein the graphics processor controls the local dimming driving unit via the scaling unit based on the region of interest defined by the CPU to selectively enable the local dimming function for the region of interest corresponding to the position of the cursor, or disable the local dimming function for the non-region of interest.
[0012] Preferably, the computing unit includes: a central processing unit (CPU) for determining the position of the cursor based on an operation of the user interface device; a graphics processor (GPU) coupled to the CPU, wherein the graphics processor defines a focus area corresponding to the cursor based on the position of the cursor; and a scaling unit (Scaling Unit) coupled to the graphics processor, wherein the scaling unit controls the local dimming driving unit based on the focus area defined by the graphics processor to selectively enable the local dimming function in the focus area corresponding to the cursor position, or disable the local dimming function in the non-focus area.
[0013] The local dimming driving unit preferably includes: multiple local dimming drivers coupled to the calculation unit, wherein the calculation unit selects at least one focus local dimming driver corresponding to the focus area or at least one non-focus local dimming driver corresponding to the non-focus area from the multiple local dimming drivers, and the calculation unit enables the local dimming function of the at least one focus local dimming driver, or the calculation unit turns off the local dimming function of the at least one non-focus local dimming driver.
[0014] The present invention also provides an operating method for a display device, comprising: generating, by a computing unit of the display device, at least one image data for display on at least one display panel; determining, by the computing unit, a position of a cursor in the at least one image data based on an operation of a user interface device; defining, by the computing unit, a focus area corresponding to the cursor based on the position of the cursor; and enabling, by a local dimming driving unit of the display device, a local dimming function for the focus area corresponding to the position of the cursor, or disabling the local dimming function for non-focus areas outside the focus area, based on the information from the computing unit.
[0015] Preferably, the method further includes: adjusting the size of the focus area corresponding to the cursor position via a user control interface.
[0016] Preferably, the system further includes: a central processing unit of the computing unit determining the position of the cursor based on the operation of the user interface device; the central processing unit defining the focus area corresponding to the cursor based on the position of the cursor; and a graphics processor of the computing unit controlling the local dimming driving unit through the scaling unit based on the focus area defined by the central processing unit to selectively enable the local dimming function for the focus area corresponding to the position of the cursor, or disable the local dimming function for the non-focus area.
[0017] Preferably, the system further includes: a central processing unit of the computing unit determining the position of the cursor based on the operation of the user interface device; a graphics processor of the computing unit defining the focus area corresponding to the cursor based on the position of the cursor; and a scaling unit of the computing unit controlling the local dimming driving unit based on the focus area defined by the graphics processor to selectively enable the local dimming function for the focus area corresponding to the position of the cursor, or disable the local dimming function for the non-focus area.
[0018] Preferably, it also includes: the computing unit selecting at least one focus local dimming driver corresponding to the focus area or at least one non-focus local dimming driver corresponding to the non-focus area from the multiple local dimming drivers of the local dimming driving unit; and the computing unit enabling the local dimming function of the at least one focus local dimming driver, or turning off the local dimming function of the at least one non-focus local dimming driver.
[0019] Based on the above, the computing unit described in the embodiments of the present invention can determine the position of the cursor in the image data based on the operation of the user interface device. In a general operating scenario, the position of the cursor is the specific area (focus area) that the user is looking at. The computing unit can define the focus area in the image data based on the position of the cursor in the image data. Using the cursor as a guide, the local dimming drive unit can enable the local dimming function for a specific area, and turn off the local dimming function for other areas outside the specific area (non-focus areas). Therefore, the display device can independently enable or disable the local dimming function for different positions in the image data to save hardware computing resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 FIG. 1 is a schematic diagram of a circuit block of a display device according to an embodiment of the present invention.
[0021] Figure 2 It is a flowchart of an operating method of a display device according to an embodiment of the present invention.
[0022] Figure 3 FIG. 1 is a schematic diagram of a “region of interest” according to an embodiment of the present invention.
[0023] Figure 4 FIG. 1 is a schematic diagram of a “region of interest” according to another embodiment of the present invention.
[0024] Figure 5 FIG. 1 is a schematic diagram of a “region of interest” according to another embodiment of the present invention.
[0025] Figure 6 FIG. 1 is a schematic diagram of a “region of interest” according to another embodiment of the present invention.
[0026] Figure 7 FIG. 1 is a circuit block diagram of a calculation unit and a local dimming driving unit according to an embodiment of the present invention. DETAILED DESCRIPTION
[0027] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.
[0028] The term "coupled (or connected)" used in the entire specification of this case (including the scope of the patent application) may refer to any direct or indirect means of connection. For example, if the text describes a first device coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be indirectly connected to the second device through other devices or some connection means. The terms "first", "second", etc. mentioned in the entire specification of this case (including the scope of the patent application) are used to name the elements (element) or to distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements, nor to limit the order of elements. In addition, wherever possible, elements / components / steps with the same numbers in the drawings and embodiments represent the same or similar parts. Elements / components / steps with the same numbers or the same terms in different embodiments can refer to the relevant descriptions of each other.
[0029] Figure 1 FIG1 is a circuit block diagram of a display device 100 according to an embodiment of the present invention. A user can operate the display device 100 through a user interface device 10. Based on actual design, the user interface device 10 may include a mouse, keyboard, touchpad, and / or other user interface devices. Figure 1 The display device 100 shown includes a computing unit 110, a display driver circuit 120, a display panel unit 130, a local dimming driver unit 140, and a backlight unit 150. Depending on the design, in some embodiments, the computing unit 110 may be implemented as a hardware circuit. In other embodiments, the computing unit 110 may be implemented as firmware, software, or a combination thereof. In still other embodiments, the computing unit 110 may be implemented as a combination of hardware, firmware, and software.
[0030] In hardware terms, the computing unit 110 may be implemented as a logic circuit in an integrated circuit. For example, the functions of the computing unit 110 may be implemented in various logic blocks, modules, and circuits in one or more controllers, microcontrollers, microprocessors, application-specific integrated circuits (ASICs), digital signal processors (DSPs), field programmable gate arrays (FPGAs), central processing units (CPUs), and / or other processing units. The functions of the computing unit 110 may be implemented as hardware circuits, such as various logic blocks, modules, and circuits in an integrated circuit, using hardware description languages (e.g., Verilog HDL or VHDL) or other suitable programming languages.
[0031] In terms of software and / or firmware, the relevant functions of the computing unit 110 can be implemented as programming codes. For example, the computing unit 110 can be implemented using general programming languages (such as C, C++ or combination languages) or other suitable programming languages. The programming codes can be recorded / stored in a "non-transitory machine-readable storage medium". In some embodiments, the non-transitory machine-readable storage medium includes, for example, a semiconductor memory and / or a storage device. An electronic device (such as a computer, CPU, controller, microcontroller or microprocessor) can read and execute the programming codes from the non-transitory machine-readable storage medium to implement the relevant functions of the computing unit 110.
[0032] Figure 2 This is a flow chart of an operating method of a display device according to an embodiment of the present invention. Figure 1 and Figure 2. The display driving circuit 120 is coupled to the computing unit 110 and the display panel unit 130. In step S210, the computing unit 110 may generate at least one image data for display on the display panel unit 130 to the display driving circuit 120. Based on the control of the computing unit 110, the display driving circuit 120 may drive the display panel unit 130 to display the image corresponding to the image data. Based on the actual design, the display panel unit 130 may include a liquid crystal display (LCD) panel or other display panels. Based on the actual design, the display panel unit 130 may be a single display panel, or the display panel unit 130 may include multiple display panels. For example, in some embodiments, two or more display panels (display panel unit 130) may jointly present the game screen. In other embodiments, multiple display panels (display panel unit 130) may form a display wall.
[0033] The computing unit 110 is also coupled to the user interface device 10. In step S220, based on the user's operation of the user interface device 10, the computing unit 110 can determine the position of the cursor in the image data (i.e., the position of the cursor in the image displayed by the display panel unit 130). In a general operation scenario, the position of the cursor is the specific area (focus area) that the user is looking at. In step S230, based on the position of the cursor, the computing unit 110 can define the focus area corresponding to the cursor. In different actual design examples and / or in different application scenarios, the focus area can have different appearances.
[0034] Figure 3 FIG. 1 is a schematic diagram of a “region of interest” according to an embodiment of the present invention. Figure 3 In the illustrated embodiment, the display panel unit 130 may include a plurality of display panels, for example Figure 3The display panel 131 and the display panel 132 are shown. The computing unit 110 can generate different image data so that the display panel 131 and the display panel 132 display different images. For example, the display panel 131 displays "A" and the display panel 132 displays "B". Based on the user's operation of the user interface device 10, the cursor 310 can move to any position of the display panel 131 and the display panel 132. The "focus area" can be the entire display area of the display panel 131 and 132 where the cursor 310 is located. As an example of an operating scenario, it is assumed that the user moves the cursor 310 to the image displayed on the display panel 131. Based on the position of the cursor 310, the computing unit 110 can define the entire display area of the display panel 131 as the focus area corresponding to the cursor 310, and the entire display area of the display panel 132 as the non-focus area. Similarly, when the cursor 310 moves into the image displayed on the display panel 132 , the computing unit 110 may define the entire display area of the display panel 132 as the focus area corresponding to the cursor 310 and the entire display area of the display panel 131 as the non-focus area.
[0035] Figure 4 FIG. 1 is a schematic diagram of a “region of interest” according to another embodiment of the present invention. Figure 4 In the embodiment shown, the display panel unit 130 may include a single display panel, but the entire display area of the display panel is divided into multiple sub-areas to display multiple images. The computing unit 110 may generate different image data to enable Figure 4 Sub-display areas 133_1, 133_2, and 133_3 are shown displaying different screens. For example, sub-display area 133_1 displays "#1," sub-display area 133_2 displays "#2," and sub-display area 133_3 displays "#3." Depending on the actual design, the sub-display areas 133_1, 133_2, and 133_3 can be divided into static or dynamic sub-areas based on the actual operating scenario. For example, in some actual operating scenarios, each screen displayed in sub-display areas 133_1, 133_2, and 133_3 can be an application window.
[0036] Based on the user's operation of the user interface device 10, the cursor 410 can be moved to any position in the sub-display areas 133_1, 133_2, and 133_3. The "focus area" can be the entire screen displayed by the cursor 410 in the different screens of the sub-display areas 133_1, 133_2, and 133_3. As an example operation scenario, assume that the user moves the cursor 410 to the sub-display area 133_2. Based on the location of the cursor 410, the computing unit 110 can define the entire screen of the sub-display area 133_2 as the focus area corresponding to the cursor 410, while the other sub-display areas 133_1 and 133_3 are non-focus areas. Similarly, when the cursor 410 moves to the sub-display area 133_1, the computing unit 110 can define the entire screen of the sub-display area 133_1 as the focus area corresponding to the cursor 410, while the other sub-display areas 133_2 and 133_3 are non-focus areas.
[0037] Figure 5 FIG2 is a schematic diagram of a “region of interest” according to another embodiment of the present invention. Based on the user's operation of the user interface device 10, the cursor 510 can be moved to any position of the display panel unit 130. In response to the cursor 510 being located at an object displayed on the display panel, the “region of interest” can be the entire “object area” corresponding to the object. For example, in Figure 5 In the illustrated embodiment, the display panel unit 130 can display multiple objects, such as object 521 and object 522. As an example operational scenario, assume that a user moves a cursor 510 to object 521. Based on the location of cursor 510, the computing unit 110 can define the entire object region 530 corresponding to object 521 as the focus region corresponding to cursor 510, while the remaining display region is defined as a non-focus region.
[0038] Figure 6 It is a schematic diagram of the "area of interest" according to another embodiment of the present invention. Based on the user's operation of the user interface device 10, the cursor 610 can move to any position of the display panel unit 130. In response to the position of the cursor 610 at the display panel unit 130, the computing unit 110 can define a "region of interest" 620 that includes the cursor 610. The geometric shape of the region of interest 620 can be determined according to the actual design and / or operation scenario. The range size of the region of interest 620 corresponding to the position of the cursor 610 can be adjusted through the user control interface. The range size of the region of interest 620 can be the range area of the region of interest, or the diameter of a circular or elliptical region of interest, the length or width of a rectangular region of interest, and so on. For example, based on the position of the cursor 610, the computing unit 110 can define Figure 6The area of interest 620 is shown, while the other displayed areas are non-areas of interest.
[0039] Please refer to Figure 1 and Figure 2 . The local dimming driving unit 140 is coupled to the computing unit 110. Based on the control of the computing unit 110, the local dimming driving unit 140 can drive the backlight unit 150 to provide backlight to the display panel unit 130. In step S240, the local dimming driving unit 140 can enable the local dimming function for the focus area corresponding to the cursor position based on the information provided by the computing unit 110, and / or turn off the local dimming function for the non-focus area outside the focus area. Therefore, the display device 100 can independently enable or disable the local dimming function for different positions in the image data to save hardware computing resources.
[0040] Figure 7 FIG. 1 is a circuit block diagram of the calculation unit 110 and the local dimming driving unit 140 according to an embodiment of the present invention. Figure 7 In the illustrated embodiment, the computing unit 110 includes a central processing unit (CPU) 111, a graphics processing unit (GPU) 112, and a scaling unit (scalar IC) 113, while the local dimming driver unit 140 includes a plurality of local dimming drivers 141. The CPU 111 can determine the position of a cursor based on the operation of the user interface device 10. The GPU 112 is coupled to the CPU 111. The scaling unit 113 is coupled to the GPU 112.
[0041] Based on actual design, in some embodiments, the CPU 111 may define a region of interest corresponding to the cursor based on the cursor's location. Based on the region of interest defined by the CPU 111, the graphics processor 112 controls the local dimming driver 140 via the scaling unit 113 to selectively enable the local dimming function for the region of interest corresponding to the cursor's location, or disable the local dimming function for non-regions of interest.
[0042] Based on actual design, in other embodiments, the graphics processor 112 may define a region of interest corresponding to the cursor based on the cursor's location. Based on the region of interest defined by the graphics processor 112, the scaling unit 113 controls the local dimming driver 140 to selectively enable the local dimming function for the region of interest corresponding to the cursor's location, or disable the local dimming function for non-regions of interest.
[0043] A plurality of local dimming drivers 141 are coupled to the computing unit 110. The computing unit 110 selects at least one local dimming driver of interest corresponding to the area of interest or at least one non-local dimming driver of non-area of interest from the local dimming drivers 141. The computing unit 110 enables the local dimming function of the at least one local dimming driver of interest or disables the local dimming function of the at least one non-local dimming driver of non-area of interest.
[0044] In summary, the computing unit 110 can determine the position of the cursor in the image data based on the operation of the user interface device 10. In a general operating scenario, the position of the cursor is the specific area (focus area) that the user is looking at. The computing unit 110 can define the focus area in the image data based on the position of the cursor in the image data. Using the cursor as a guide, the local dimming drive unit 140 can enable the local dimming function for a specific area, and turn off the local dimming function for other areas outside the specific area (non-focus areas). Therefore, the display device 100 can independently enable or disable the local dimming function for different positions in the image data to save hardware computing resources.
[0045] The present invention has been described with reference to the above embodiments. However, the above embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements that do not depart from the spirit and scope of the present invention are intended to be protected by the present invention.
Claims
1. A display device, characterized in that: include: A computing unit generating at least one image data for display on at least one display panel, wherein the computing unit determines a position of a cursor in the at least one image data based on an operation of a user interface device, and the computing unit defines a focus area corresponding to the cursor based on the position of the cursor; and The local dimming driving unit is coupled to the calculation unit, wherein the local dimming driving unit enables the local dimming function for the focus area corresponding to the cursor position, or turns off the local dimming function for the non-focus area outside the focus area based on the information of the calculation unit.
2. The display device according to claim 1, wherein: The display device comprises a plurality of display panels, and the focus area is the entire display area of the display panel where the cursor is located among the plurality of display panels.
3. The display device according to claim 1, wherein: The display panel of the display device displays a plurality of frames, and the focus area is the entire frame where the cursor is located in the plurality of frames.
4. The display device according to claim 3, characterized in that Each of the plurality of screens is an application window.
5. The display device according to claim 1, wherein: The size of the focus area corresponding to the cursor position is adjusted via a user control interface.
6. The display device according to claim 1, wherein: The computing unit includes: A central processing unit determines the position of the cursor based on the operation of the user interface device, and defines the focus area corresponding to the cursor based on the position of the cursor; and A graphics processor is coupled to the central processing unit, wherein the graphics processor controls the local dimming driving unit through the scaling unit based on the focus area defined by the central processing unit to selectively enable the local dimming function for the focus area corresponding to the cursor position, or disable the local dimming function for the non-focus area.
7. The display device according to claim 1, wherein: The local dimming driving unit comprises: A plurality of local dimming drivers are coupled to the computing unit, wherein the computing unit selects at least one focus local dimming driver corresponding to the focus area or at least one non-focus local dimming driver corresponding to the non-focus area from the plurality of local dimming drivers, and the computing unit enables the local dimming function of the at least one focus local dimming driver, or the computing unit turns off the local dimming function of the at least one non-focus local dimming driver.
8. A method for operating a display device, characterized in that: include: The computing unit of the display device generates at least one image data for display on at least one display panel; Determining, by the computing unit, a position of a cursor in the at least one image data based on an operation of the user interface device; The calculation unit defines a focus area corresponding to the cursor based on the position of the cursor; and The local dimming driving unit of the display device enables the local dimming function for the focus area corresponding to the cursor position based on the information of the calculation unit, or turns off the local dimming function for the non-focus area outside the focus area.
9. The operating method according to claim 8, characterized in that: Also includes: Determining the position of the cursor by a central processor of the computing unit based on the operation of the user interface device; The central processing unit defines the focus area corresponding to the cursor based on the position of the cursor; and The graphics processor of the computing unit controls the local dimming driving unit through the scaling unit based on the focus area defined by the central processor to selectively enable the local dimming function for the focus area corresponding to the cursor position, or disable the local dimming function for the non-focus area.
10. The operating method according to claim 8, characterized in that: Also includes: The calculation unit selects at least one local dimming driver of interest corresponding to the area of interest or at least one local dimming driver of no interest corresponding to the area of no interest from a plurality of local dimming drivers of the local dimming driving unit; and The calculation unit enables the local dimming function of the at least one concerned local dimming driver, or disables the local dimming function of the at least one non-concerned local dimming driver.