CN112614459A - OSD display method based on LED display screen, device and display control card thereof - Google Patents
OSD display method based on LED display screen, device and display control card thereof Download PDFInfo
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- CN112614459A CN112614459A CN202011189550.4A CN202011189550A CN112614459A CN 112614459 A CN112614459 A CN 112614459A CN 202011189550 A CN202011189550 A CN 202011189550A CN 112614459 A CN112614459 A CN 112614459A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The embodiment of the invention discloses an OSD display method and device based on an LED display screen and a display control card. The OSD display method based on the LED display screen comprises the following steps: obtaining an OSD display instruction; analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof; processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture; acquiring an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and converting the target output picture into display data and a control signal and outputting the display data and the control signal to an LED display screen for display. The embodiment of the invention can enrich the diversity of the OSD display content and the OSD display effect on the LED display screen and also improve the user experience.
Description
Technical Field
The invention relates to the technical field of display control, in particular to an OSD display method based on an LED display screen, an OSD display device based on the LED display screen and a display control card.
Background
With the rapid development of display screen technologies, such as LED (Light-Emitting Diode) display technologies, LED display screens are currently applied to various fields due to their advantages of high brightness, wide viewing angle, long service life, freedom in assembly, and the like. Meanwhile, an OSD (On-Screen Display) picture such as Display characters appears On the Display Screen, which is mainly used for displaying the number of the network port of the Display controller connected to the current LED box during the configuration and the Screen connection operation of the Display Screen. The current OSD has a single content, such as only the network port number and the connection serial number, and has a single display effect, which is not flexible enough, such as white characters on black background, and cannot achieve the effects of translucency, and when the display controller is not connected, the OSD content cannot be displayed.
Disclosure of Invention
Therefore, in view of at least some of the defects and shortcomings in the prior art, embodiments of the present invention provide an OSD display method based on an LED display screen, an OSD display apparatus based on an LED display screen, and a display control card.
Specifically, an embodiment of the present invention provides an OSD display method based on an LED display screen, including: obtaining an OSD display instruction; analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof; processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture; acquiring an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and converting the target output picture into display data and a control signal and outputting the display data and the control signal to an LED display screen for display.
According to the technical scheme, the OSD picture is obtained by processing the target display parameter and the OSD content to be displayed, and the target output picture is obtained by overlapping the target display parameter and the OSD content to be displayed and is output, namely, the image processing process and logic are added to the OSD content to be displayed, so that the display of various OSD contents such as characters, icons, pictures and the like can be realized, different background colors, brightness, transparency and the like can be set through the target display parameter, the diversity of the display content and the display effect of the OSD picture is enriched, and the user experience degree is also improved.
In an embodiment of the present invention, the OSD content to be displayed includes at least one of a character, a graphic, and an icon.
In an embodiment of the present invention, the obtaining the OSD display instruction specifically includes: the method comprises the steps of obtaining an OSD display instruction triggered by operation of a user on a control component, wherein the OSD display instruction corresponds to a control mode of the user on the control component.
In an embodiment of the present invention, the analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof includes: analyzing the OSD display instruction to obtain an OSD content identifier, and acquiring preset OSD content and preset display parameters thereof according to the OSD content identifier; and taking the preset OSD content as the OSD content to be displayed and taking the preset display parameter as the target display parameter.
In an embodiment of the present invention, the analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof includes: analyzing the OSD display instruction to obtain the OSD content to be displayed; and acquiring preset display parameters according to the OSD content to be displayed and using the preset display parameters as the target display parameters.
In one embodiment of the present invention, the target display parameters include a display range, a background color and a display color of the OSD content to be displayed; the processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture comprises: generating an OSD background picture according to the display range and the background color; and mapping the OSD content to be displayed to the OSD background according to the display color to obtain the OSD picture.
In one embodiment of the present invention, the target display parameter further includes a target transparency coefficient of the OSD picture; the processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture further comprises: and adjusting the transparency of the OSD picture according to the target transparency coefficient.
On the other hand, an OSD display apparatus based on an LED display screen provided in an embodiment of the present invention is used for implementing the aforementioned OSD display method and includes: the OSD display instruction receiving module is used for acquiring an OSD display instruction; the OSD display instruction analysis module is used for analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameters thereof; the OSD picture generating module is used for processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture; the target output picture obtaining module is used for obtaining an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and the target output picture display module is used for converting the target output picture into display data and a control signal and outputting the display data and the control signal to the LED display screen for display.
On the other hand, an embodiment of the present invention provides a display control card, including: a display data and control signal output interface; a programmable logic device electrically connected to the image output interface and including: the system comprises a soft core processing unit, a data cache unit, an OSD data processing unit, an image superposition unit and a data conversion unit; the soft core processing unit is used for acquiring an OSD display instruction, analyzing the OSD display instruction and determining OSD content to be displayed and target display parameters thereof; the OSD data processing unit is used for processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture; the image superposition unit is used for acquiring an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and the data conversion unit is used for converting the target output picture into display data and a control signal and outputting the display data and the control signal to the LED display screen.
In an embodiment of the present invention, the display control card further includes a key, where the key is connected to the programmable logic device and is configured to send the OSD display instruction triggered by the operation of the manipulation component by the user to the programmable logic device, where the OSD display instruction corresponds to a manipulation mode of the manipulation component by the user.
The above technical solution may have one or more of the following advantages: according to the embodiment of the invention, the OSD picture is obtained by processing the target display parameter and the OSD content to be displayed, and the target output picture is obtained by overlapping the target display parameter and the OSD content to be displayed and is output, namely, the image processing process and logic are added to the OSD content to be displayed, so that the display of various OSD contents such as characters, icons, pictures and the like can be realized, different background colors, character colors, transparency coefficients and the like can be set through the target display parameter, the diversity and flexibility of the display content and the display effect of the OSD picture are improved, and the user experience degree is also improved. In addition, the OSD display instruction is obtained by triggering the key, OSD display can be realized under the condition that a display controller is not required to be connected, and the application scene of the OSD display is expanded; meanwhile, different OSD display instructions are generated for different control modes of the control component, so that different OSD contents can be displayed on the display screen, the OSD display page turning function is realized, and the display contents can be enriched.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of an OSD display method based on an LED display screen according to an embodiment of the present invention.
Fig. 2a is a detailed flowchart of step S12 in fig. 1.
Fig. 2b is another detailed flowchart of step S12 in fig. 1.
Fig. 3a is a detailed flowchart of step S13 in fig. 1.
Fig. 3b is a detailed flowchart of step S13 in fig. 1.
Fig. 4 is a schematic structural diagram of a display system according to the present invention.
Fig. 5 is a schematic structural diagram of the display control card in fig. 4.
Fig. 6 is a schematic diagram illustrating a process of implementing OSD display by the programmable logic device in fig. 5.
FIG. 7 is a schematic diagram of another display control card shown in FIG. 4.
Fig. 8 is a schematic diagram of a module of an OSD display based on an LED display panel according to a second embodiment of the present invention.
Fig. 9 is a schematic structural diagram of an OSD display system based on an LED display panel according to a third embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a computer-readable storage medium according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, an OSD display method based on an LED display screen according to an embodiment of the present invention includes, for example, the steps of:
s11: obtaining an OSD display instruction;
s12: analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof;
s13: processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture;
s14: acquiring an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and
s15: and converting the target output picture into display data and a control signal and outputting the display data and the control signal to an LED display screen for display.
Therefore, the embodiment of the invention processes the target display parameters and the OSD contents to be displayed to obtain the OSD picture, and superposes the OSD picture and the image to be output to obtain the target output picture for outputting, namely, the image processing process and logic are added to the OSD contents to be displayed, so that the display of various OSD contents such as characters, icons, pictures and the like can be realized, different background colors, transparency coefficients and the like can be set through the target display parameters, the diversity of the display contents and the display effect of the OSD picture is improved, and the user experience degree is also improved.
The OSD content to be displayed comprises at least one of characters, graphs and icons.
Specifically, step S11 is, for example: the method comprises the steps of obtaining an OSD display instruction triggered by operation of a user on a control component, wherein the OSD display instruction corresponds to a control mode of the user on the control component.
Specifically, as shown in fig. 2a, step S12 includes, for example:
s121 a: analyzing the OSD display instruction to obtain an OSD content identifier, and acquiring preset OSD content and preset display parameters thereof according to the OSD content identifier; and
s123 a: and taking the preset OSD content as the OSD content to be displayed and taking the preset display parameter as the target display parameter.
In another embodiment of the present invention, as shown in fig. 2b, step S12 may also include:
s121 b: analyzing the OSD display instruction to obtain the OSD content to be displayed; and
s123 b: and acquiring preset display parameters according to the OSD content to be displayed and using the preset display parameters as the target display parameters.
Specifically, the target display parameters include a display range, a background color, and a display color of the OSD content to be displayed. As shown in fig. 3a, step S13 includes, for example:
s131: generating an OSD background picture according to the display range and the background color; and
s132: and mapping the OSD content to be displayed to the OSD background according to the display color to obtain the OSD picture.
Specifically, the target display parameter further includes a target transparency coefficient of the OSD picture. As shown in fig. 3b, step S13 may further include:
s133: and adjusting the transparency of the OSD picture according to the target transparency coefficient.
For better understanding of the present embodiment, the following takes the display screen as an LED display screen as an example, and the specific process and principle of the OSD display method based on the LED display screen of the present embodiment are described with reference to fig. 4 to fig. 7.
As shown in fig. 4, the OSD displaying method based on the LED display screen provided in this embodiment is suitable for the display control card 100 in the display system 10, and displays characters, pictures, icons, and the like to be displayed on the display screen 200 connected to the display control card 100. The display system 10 may, for example, include an upper computer 400, a display controller 300, a display control card 100, and a display screen 200, which are connected in sequence. The upper computer 400 may be, for example, a PC, and is configured to configure the display screen 200 through the display controller 300 and the display control card 100, or send control instructions and data to the display controller 300 and the display control card 100. The display controller 300, also called a transmitting card, has a function of performing image processing on received image data and packing the processed image data into a corresponding format, for example, a network packet format, and outputting the packed image data to the display control card 100, which may also typically implement its function by using a programmable logic device.
As mentioned above, as shown in fig. 5, the display control card 100 may include, for example, an image data input circuit 120, a programmable logic device 110, and a display data and control signal interface 130. The programmable logic device 110 is connected between the image data input circuit 120 and the display data and control signal interface 130. The image data input circuit 120 is used for receiving a video source or an image input by the display controller, wherein the image data input circuit 120 may be an ethernet interface circuit, for example. The ethernet interface circuit includes, for example, an ethernet interface, and an ethernet physical layer transceiver connected between the ethernet interface and the programmable logic device 110, and may further include a network transformer connected between the ethernet interface and the ethernet physical layer transceiver. The ethernet interface is, for example, an RJ45 interface. In addition, the image data input circuit 130 may also be an optical interface circuit, which may for example include an optical fiber interface and a photoelectric conversion module connected between the optical fiber interface and the programmable logic device 110, for receiving and processing image data transmitted through the optical fiber. The Programmable logic device 110 may be, for example, an FPGA (Field Programmable Gate Array) for performing image processing on image data acquired from the image data input circuit 120, converting the processed image data into display data and control signals in a specific format, such as TTL format, and outputting the display data and control signals to the display screen 200 connected thereto through the display data and control signal interface 130. The display data and control signal interface 130 may be, for example, a pin header, a box header, etc. connector. More specifically, as shown in fig. 6, the programmable logic device 110 further includes, for example, a soft core processing unit 111, a data buffer unit 112, an OSD data processing unit 113, an image superimposing unit 114, and a data conversion unit 115. The soft core processing unit 111 is, for example, MicroBlaze, which is a microprocessor IP core based on the Xilinx company FPGA. The system can respond to software and hardware interrupts to perform exception handling, and can expand external interrupts and the like by adding control logic. The data buffer unit 112 may be, for example, a RAM inside the programmable logic device 110, and is used for buffering data during operation. The OSD data processing unit 113 is, for example, a unit or a module that processes OSD data. The image superimposing unit 114 is used, for example, to perform superimposition processing on at least two images or layer data. The data conversion unit 115 is configured to convert the image data after the superimposition processing into display data and a control signal.
The display screen 200 may be, for example, an LED display screen, which may include at least one LED lamp panel, and each of the LED lamp panels includes a plurality of LED lamp points. Typically, the display screen 200 is used to transmit display data and control signals input by the display control card 100 to the LED lamp panel connected thereto to display corresponding images.
The OSD display method based on the LED display screen provided in the embodiments of the present invention mainly obtains an OSD picture by processing according to a target display parameter and OSD contents to be displayed, and obtains and outputs a target output picture by superimposing the target output picture with an image to be output, that is, by adding an image processing process and logic to the OSD contents to be displayed, various OSD contents such as characters, icons, pictures, and the like can be displayed, different background colors, transparency coefficients, and the like can be set by the target display parameter, so that the diversity of the display contents and the display effects of the OSD picture is improved, and the user experience is also improved, which is specifically as follows:
first, the soft core processing unit 111 of the programmable logic device 110 of the display control card 100 acquires an OSD display instruction. The OSD display instruction may be transmitted by the display controller 300 after being received by the image data input circuit 120 from the upper computer 400, so that the user can display the interface between the LED display screen and the upper computer in a linkage manner when using the OSD display function, thereby enhancing the man-machine interaction function. The OSD display instruction may include two items of OSD content and display parameters of the OSD content, or only one item may be identified by the OSD content. Specifically, the OSD content identifier may be, for example, a preset identifier representing the OSD content, for example, a four-bit binary representation is adopted, 0001 represents the OSD content as "current temperature of display screen", 0010 represents the OSD content as "current serial number of LED box", and the like. The OSD content may include at least one of characters, graphics, and icons, for example. Furthermore, the characters can adopt TTF (true Type font) fonts, which can support not only conventional character display, but also special characters, graphics and the like, and can support the equal-scale amplification of the fonts and the graphics, and meanwhile, the support of various colors is increased, the display flexibility is greatly increased, and the requirements of various display interfaces can be met. The display parameters may include, for example, a display range (including position and size), a background color, a display color, a transparency coefficient, etc. of the OSD content. These data may be, for example, pre-stored in a memory, such as a non-volatile memory, within display control card 100 for access by programmable logic device 110.
Of course, as shown in fig. 7, the display control card 100 may further include a manipulation unit 140, and the manipulation unit 140 is connected to the programmable logic device 110. The soft core processing unit 111 may further obtain the OSD display instruction triggered by the operation of the manipulating component by the user, where the OSD display instruction corresponds to the manipulating mode of the manipulating component by the user. The manipulation part 140 may include, for example, but not limited to, a key, a joystick, a knob, a touch screen, and the like. The manipulation modes of the manipulation member 140 by the user include, for example and without limitation: the number of times of pressing the key, the duration of pressing, the direction, speed and distance of shaking the rocker, the direction and angle of rotation of the knob, and the touch operation on the touch screen. The OSD display instruction is obtained through the keys, instead of the upper computer 400 and the display controller 300, so that the OSD display can be realized without connecting the display controller 300, and the application scene of the OSD display is expanded; meanwhile, different OSD display instructions are generated through different control modes of the control component, for example, when a user triggers different key-press times, different OSD contents can be displayed on a display screen, so that the function of OSD display page turning is realized, the display contents can be enriched, and monitoring information, box parameter information, video source information, running time and the like can be displayed.
Next, the soft core processing unit 111 then determines whether the OSD display switch is turned on. When the OSD display switch is turned on, the soft core processing unit 111 parses the OSD display instruction to determine the OSD content to be displayed and the target display parameters thereof. Specifically, when the OSD display instruction is sent by the upper computer and includes the OSD content and the display parameters of the OSD content, the soft core processing unit 111 analyzes the OSD display instruction to directly obtain the OSD content and the OSD content, uses the OSD content as the OSD content to be displayed, and uses the display parameters of the OSD content as the target display parameters of the OSD content to be displayed. When the OSD display instruction is sent by the upper computer and only includes the OSD content identifier, the soft core processing unit 111 parses the OSD display instruction to obtain the OSD content identifier, then locally obtains the preset OSD content and the preset display parameter corresponding to the OSD content identifier according to the OSD content identifier, finally takes the preset OSD content as the OSD content to be displayed, and takes the preset display parameter of the OSD content as the target display parameter of the OSD content to be displayed. Here, the OSD content identifier, the OSD content, and the display parameter mapping relationship in the form of a table, a list, a linked list, an array, or the like are stored locally on the display control card 100, for example, in the nonvolatile memory. And finding the corresponding preset OSD content and the preset display parameter in the mapping relation of the OSD content identification, the OSD content and the display parameter according to the OSD content identification.
When the OSD display instruction is triggered by the operation of the user on the control component 140, for example, the number of times of pressing the key is determined, the soft core processing unit 111 determines the OSD content identifier of the OSD display instruction according to the number of times of pressing the key, then locally obtains the preset OSD content and the preset display parameter corresponding to the OSD content identifier according to the OSD content identifier, finally, takes the preset OSD content as the OSD content to be displayed, and takes the preset display parameter of the OSD content as the target display parameter of the OSD content to be displayed.
Then, since the processing speed of the soft core processing unit 111 is lower than the data processing speed of the programmable logic device 110, the soft core processing unit 111 writes the analyzed OSD content to be displayed and the target display parameter into the data buffer unit 112. When all the required data are stored, the soft core processing unit 111 sends a data storage complete signal. After the OSD data processing unit 113 of the programmable logic device 110 obtains the data storage completion signal, the OSD data processing unit 113 reads the OSD content to be displayed and the target display parameter from the data cache unit. Of course, when the processing speed of the soft core processing unit 111 is not lower than the data processing speed of the programmable logic device 110, the OSD content to be displayed and the target display parameter do not need to be written into the data buffer unit 112, but are directly transmitted to the OSD data processing unit 113.
Then, the OSD data processing unit 113 processes the OSD content to be displayed according to the target display parameter to obtain an OSD picture. Specifically, the target display parameters include, for example, a display range, a background color, and a display color of the OSD content to be displayed. The OSD data processing unit 113 generates an OSD background picture according to the display range and the background color, and then maps the OSD content to be displayed onto the OSD background according to the display color to obtain the OSD picture. The display range here can be, for example, the size (or width × height) of the OSD content to be displayed. The background color is a color of a background of the OSD picture, and the display color may be, for example, a color of the OSD content to be displayed, such as "run time: 1 hour "a string of characters, the displayed color then indicates the color displayed by the string of characters. The colors here are represented in RGB format, for example, and are not described here again. Therefore, the OSD content to be displayed is mapped into the OSD picture according to the target display parameter, so that the OSD picture can have various display effects and display contents, the display effect is improved, the display contents are enriched, and the user experience is also improved.
Further, the target display parameter further includes a target transparency coefficient of the OSD picture. The OSD data processing unit 113 adjusts the transparency of the OSD picture according to the target transparency coefficient. The value range of the target transparency coefficient may be, for example, [0,1], where 0 indicates that the OSD image is opaque, and where 1 indicates that the OSD image is fully transparent.
Then, the image superimposing unit 114 obtains the image to be output, which is input through the image data input circuit 120, and adds the OSD picture to the image to be output to obtain a target output picture. Specifically, when the OSD picture is not set with the transparency coefficient, then the OSD picture is opaque by default, and therefore, the OSD picture is superimposed on the image to be output, covering the portion of the image to be output therebelow, making it invisible. When the OSD picture is provided with a transparency coefficient, for example, if the target transparency coefficient is a, the transparency coefficient of a pixel point on the image to be output at the position corresponding to the target transparency coefficient is: 1-A. And then, superposing the OSD picture on the image to be output to obtain a target output picture.
Finally, the data conversion unit 115 converts the target output image into display data and a control signal and outputs the display data and the control signal to the LED display screen for display. The method can be realized by a common conversion method in the prior art, and is not described in detail.
In summary, in the embodiments of the present invention, the OSD picture is obtained by processing the target display parameter and the OSD content to be displayed, and the target output picture is obtained by superimposing the target display parameter and the OSD content to be displayed, and is output, that is, by adding an image processing process and logic to the OSD content to be displayed, display of various OSD contents such as characters, icons, pictures, and even special graphics can be realized, different background colors, character colors, transparency coefficients, and the like can be set by the target display parameter, and can be synchronously superimposed on the image or video source to be output for display, various OSD interfaces can be displayed without affecting display, diversity and flexibility of the display content and display effect of the OSD picture are improved, and user experience is also improved. In addition, different OSD display instructions are generated for different control modes of the control component, OSD display can be realized under the condition that the display controller 300 is not required to be connected, namely the OSD display can be separated from the upper computer and the display controller for use, and the application scene of the OSD display is expanded; meanwhile, different OSD contents can be displayed on the display screen by triggering the keys for different times, so that the function of OSD display page turning is realized, and the display contents can be enriched.
[ second embodiment ]
Referring to fig. 8, an embodiment of the present invention provides an OSD display apparatus 400 based on an LED display screen, which is used to implement the OSD display method based on the LED display screen in the foregoing first embodiment. The OSD display device 400 may, for example, include: an OSD display instruction receiving module 410, an OSD display instruction parsing module 420, an OSD picture generating module 430, a target output picture obtaining module 440, and a target output picture displaying module 450.
The OSD display instruction receiving module 410 is configured to obtain an OSD display instruction; the OSD display instruction parsing module 420 is configured to parse the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof; the OSD picture generating module 430 is configured to process the OSD content to be displayed according to the target display parameter to obtain an OSD picture; the target output picture obtaining module 440 is configured to obtain an image to be output and superimpose the OSD picture on the image to be output to obtain a target output picture; and the target output picture display module 450 is configured to convert the target output picture into display data and a control signal and output the display data and the control signal to the LED display screen for display.
For specific functional details of each module of the LED-based OSD displaying apparatus 400 provided in this embodiment, reference may be made to the related description of each step of the LED-based OSD displaying method in the first embodiment, and no further description is given here. Furthermore, it should be noted that each module, unit and sub-unit of the LED-based OSD displaying apparatus 400 may be a software module or unit, for example, a programmable logic device integrated in the display control card in the first embodiment.
[ third embodiment ]
As shown in fig. 9, a third embodiment of the present invention provides an image brightness control system 500. Image brightness control system 500 includes, for example, a memory 510 and a processor 530 coupled to memory 510. The memory 510 may be, for example, a non-volatile memory having stored thereon a computer program 511. Processor 530 may be, for example, an embedded processor. The processor 530 executes the computer program 511 to execute the LED display screen based OSD display method in the first embodiment.
The specific operation and technical effects of the image brightness control system 500 in the present embodiment are described in the foregoing first embodiment.
[ fourth example ] A
As shown in fig. 10, an embodiment of the present invention provides a computer-readable storage medium 600. The computer-readable storage medium 600 is, for example, a nonvolatile memory, which is, for example: magnetic media (e.g., hard disks, floppy disks, and magnetic tape), optical media (e.g., CDROM disks and DVDs), magneto-optical media (e.g., optical disks), and hardware devices specially constructed for storing and executing computer-executable instructions (e.g., Read Only Memories (ROMs), Random Access Memories (RAMs), flash memories, etc.). Computer-readable storage medium 600 has stored thereon computer-executable instructions 610. The computer-readable storage medium 600 may execute the computer-executable instructions 610 by one or more processors or processing devices to implement the LED display screen based OSD display method in the foregoing first embodiment.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and technical solutions of the embodiments can be arbitrarily combined and used without conflict between technical features and structures, and without departing from the purpose of the present invention.
Furthermore, it should be appreciated that in the embodiments provided by the present invention, the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and an actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An OSD display method based on an LED display screen is characterized by comprising the following steps:
obtaining an OSD display instruction;
analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameter thereof;
processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture;
acquiring an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and
and converting the target output picture into display data and a control signal and outputting the display data and the control signal to an LED display screen for display.
2. The method as claimed in claim 1, wherein the OSD contents to be displayed include at least one of characters, graphics, and icons.
3. The method for displaying on-screen display (OSD) based on LED display screen according to claim 1, wherein the obtaining of the OSD display command specifically comprises:
the method comprises the steps of obtaining an OSD display instruction triggered by operation of a user on a control component, wherein the OSD display instruction corresponds to a control mode of the user on the control component.
4. The method as claimed in claim 1, wherein the parsing the OSD display command to determine the OSD contents to be displayed and the target display parameters thereof comprises:
analyzing the OSD display instruction to obtain an OSD content identifier, and acquiring preset OSD content and preset display parameters thereof according to the OSD content identifier;
and taking the preset OSD content as the OSD content to be displayed and taking the preset display parameter as the target display parameter.
5. The method as claimed in claim 1, wherein the parsing the OSD display command to determine the OSD contents to be displayed and the target display parameters thereof comprises:
analyzing the OSD display instruction to obtain the OSD content to be displayed; and
and acquiring preset display parameters according to the OSD content to be displayed and using the preset display parameters as the target display parameters.
6. The LED display screen-based OSD display method of claim 1, wherein the target display parameters include a display range, a background color, and a display color of the OSD content to be displayed; the processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture comprises:
generating an OSD background picture according to the display range and the background color; and
and mapping the OSD content to be displayed to the OSD background according to the display color to obtain the OSD picture.
7. The LED display screen-based OSD display method of claim 6, wherein the target display parameter further includes a target transparency coefficient of the OSD picture; the processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture further comprises:
and adjusting the transparency of the OSD picture according to the target transparency coefficient.
8. An OSD display apparatus based on an LED display screen, for implementing the OSD display method of any one of claims 1 to 7 and comprising:
the OSD display instruction receiving module is used for acquiring an OSD display instruction;
the OSD display instruction analysis module is used for analyzing the OSD display instruction to determine the OSD content to be displayed and the target display parameters thereof;
the OSD picture generating module is used for processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture;
the target output picture obtaining module is used for obtaining an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and
and the target output picture display module is used for converting the target output picture into display data and a control signal and outputting the display data and the control signal to the LED display screen for display.
9. A display control card, comprising:
a display data and control signal output interface;
a programmable logic device electrically connected to the display data and control signal output interface and including: the system comprises a soft core processing unit, a data cache unit, an OSD data processing unit, an image superposition unit and a data conversion unit;
the soft core processing unit is used for acquiring an OSD display instruction, analyzing the OSD display instruction and determining OSD content to be displayed and target display parameters thereof;
the OSD data processing unit is used for processing the OSD content to be displayed according to the target display parameter to obtain an OSD picture;
the image superposition unit is used for acquiring an image to be output and superposing the OSD picture on the image to be output to obtain a target output picture; and
and the data conversion unit is used for converting the target output picture into display data and a control signal and outputting the display data and the control signal to the LED display screen.
10. The display control card of claim 9, further comprising a key, connected to the programmable logic device, for sending the OSD display command triggered by the operation of the manipulation component by the user to the programmable logic device, wherein the OSD display command corresponds to the manipulation mode of the manipulation component by the user.
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| CN202011189550.4A CN112614459A (en) | 2020-10-30 | 2020-10-30 | OSD display method based on LED display screen, device and display control card thereof |
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Application publication date: 20210406 |