CN112017587A - Display system, display correction method and display correction device - Google Patents
Display system, display correction method and display correction device Download PDFInfo
- Publication number
- CN112017587A CN112017587A CN201910465381.3A CN201910465381A CN112017587A CN 112017587 A CN112017587 A CN 112017587A CN 201910465381 A CN201910465381 A CN 201910465381A CN 112017587 A CN112017587 A CN 112017587A
- Authority
- CN
- China
- Prior art keywords
- pixel
- image data
- correction
- display
- video signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012937 correction Methods 0.000 title claims abstract description 196
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012545 processing Methods 0.000 claims description 17
- 230000011218 segmentation Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000003702 image correction Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention discloses a display system, a display correction method and a display correction device. The display system includes, for example: the display correction device is used for receiving an input video signal, decoding the received input video signal to obtain input image data, correcting the input image data pixel by pixel based on a preset and stored pixel correction coefficient to obtain target image data, coding the target image data to obtain a target video signal and outputting the target video signal; the sending card equipment is connected with the display correction equipment and used for receiving the target video signal and converting the received target video signal into target protocol data; and the display screen body is provided with a receiving card, is connected with the sending card equipment, and is used for receiving the target protocol data and displaying images based on the received target protocol data. The embodiment of the invention solves the problem that hardware such as a receiving card, an LED lamp panel and the like are used as display correction equipment by providing the display correction equipment.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display system, a display correction method, and a display correction apparatus.
Background
With the development of science and technology, the LED display screen is widely applied to the fields of urban media, urban traffic electronic signboard and the like as a novel display technology.
The defects of the LED display screen are continuously exposed in the use process, the display of the LED display screen is uneven due to the fact that the brightness and the chromaticity of the LED lamp are greatly deviated when the LED display screen leaves a factory, and phenomena such as mosaic and screen splash and the like can be caused by the fact that the brightness and the chromaticity of the LED lamp are attenuated to different degrees and drift of the chromaticity of the LED lamp in the use process. Generally, an LED display screen manufacturer corrects a display screen by obtaining luminance and chromaticity coordinates of each pixel of the display screen based on a camera or an image colorimeter, and calculating the luminance and chromaticity coordinates by data processing software to obtain correction coefficient data. Common correction coefficient storage modes of the LED display screen include receiving card storage and lamp panel storage. The storage of the receiving card is to store, correct and display the correction coefficient data on the receiving card, and the storage of the lamp panel is to store the correction coefficient data on the lamp panel and then to correct and display the correction coefficient data on the receiving card.
The two common methods for storing and correcting the correction coefficient data both need to perform correction and display control on the correction coefficient data on the receiving card, which may cause problems of slow processing speed of the receiving card, reduced memory usage of the receiving card, and the like.
Disclosure of Invention
The embodiment of the invention provides a display system, a display correction method and a display correction device, which are used for realizing the uniformity of display and the accurate brightness or brightness correction processing effect.
In one aspect, a display system provided in an embodiment of the present invention includes: the display correction device is used for receiving an input video signal, decoding the received input video signal to obtain input image data, correcting the input image data on a pixel-by-pixel basis based on a preset and stored pixel correction coefficient to obtain target image data, encoding the target image data to obtain a target video signal and outputting the target video signal; the sending card equipment is connected with the display correction equipment and used for receiving the target video signal and converting the received target video signal into target protocol data; and the display screen body is provided with a receiving card, is connected with the sending card equipment, and is used for receiving the target protocol data and displaying images based on the received target protocol data.
In an embodiment of the present invention, the pixel-by-pixel correction is pixel-by-pixel luminance correction or pixel-by-pixel luminance and chrominance correction; the target protocol data is Ethernet protocol data.
In an embodiment of the present invention, the receiving card does not perform pixel-by-pixel luminance correction and pixel-by-pixel luminance and chrominance correction.
In one embodiment of the present invention, the display correction apparatus includes: a video input interface for receiving the input video signal; the video decoder is connected with the video interface and used for decoding the input video signal to obtain the input image data; the memory is used for presetting and storing the pixel correction coefficient; the processor is connected with the video decoder and the memory and used for correcting the input image data pixel by pixel based on the preset and stored pixel correction coefficient to obtain target image data; the video encoder is connected with the processor and used for encoding the target image data to obtain a target video signal; and the video output interface is connected with the video encoder and used for outputting the target video signal.
In one embodiment of the present invention, the video input interfaces are multiple paths, and the multiple paths of video input interfaces are respectively connected to the processor through the corresponding video decoders; the video output interfaces are in multiple paths, and the multiple paths of video output interfaces are respectively connected with the processor through the corresponding video encoders.
On the other hand, the display correction method provided by the embodiment of the invention is suitable for being applied to a display system comprising sending card equipment and a display screen body which is connected with the sending card equipment and is provided with a receiving card; the display correction method includes: receiving an input video signal; decoding the received input video signal to obtain input image data; performing pixel-by-pixel correction on the input image data based on a preset and stored pixel correction coefficient to obtain target image data; encoding the target image data to obtain a target video signal; and outputting the target video signal to the sending card equipment so as to control the display screen body configured with the receiving card to display images.
In an embodiment of the present invention, the pixel-by-pixel correction is pixel-by-pixel luminance correction or pixel-by-pixel luminance and chrominance correction.
In an embodiment of the present invention, the receiving card does not perform pixel-by-pixel luminance correction and pixel-by-pixel luminance and chrominance correction.
In an embodiment of the present invention, the performing pixel-by-pixel correction on the input image data based on a preset stored pixel correction coefficient to obtain target image data includes: splicing a plurality of input image data respectively corresponding to the plurality of paths of input video signals to obtain spliced image data; performing pixel-by-pixel correction on the spliced image data based on the preset and stored pixel correction coefficient to obtain the corrected spliced image data; and carrying out segmentation processing on the corrected spliced image data to obtain a plurality of target image data.
In an embodiment of the present invention, the performing pixel-by-pixel correction on the input image data based on a preset stored pixel correction coefficient to obtain target image data includes: performing pixel-by-pixel correction on the input image data based on the preset and stored pixel correction coefficient to obtain corrected image data; and carrying out segmentation processing on the corrected image data to obtain a plurality of copies of the target image data.
In another aspect, a display calibration apparatus provided in an embodiment of the present invention is suitable for being applied to a display system including a transmitting card device and a display screen body connected to the transmitting card device and configured with a receiving card; the display correction apparatus is configured to execute the display correction method according to any one of the above, and the display correction apparatus includes: a receiving module for receiving an input video signal; the decoding module is used for decoding the received input video signal to obtain input image data; the correction module is used for correcting the input image data pixel by pixel based on a preset and stored pixel correction coefficient to obtain target image data; the encoding module is used for encoding the target image data to obtain a target video signal; and the output module is used for outputting the target video signal to the sending card equipment so as to control the display screen body configured with the receiving card to display images.
According to the embodiment of the invention, the display correction equipment is configured at the front end of the card sending equipment, so that the problem that the receiving card and the LED lamp panel are used as the display correction equipment is solved. The display correction equipment is independent, correction coefficient data and even other conversion data can be independently stored, input images are corrected through the display correction equipment, display control is only carried out on the receiving card, the utilization rate of the memory of the receiving card is reduced, the LED lamp panel only needs to provide a display platform, and the LED lamp panel does not need to provide any hardware to store correction data, so that a series of problems caused by the fact that correction coefficients are stored on the hardware such as the receiving card and the LED lamp panel can be solved. It should be understood that, in the present application, the display correction apparatus outputs a target video signal, which the transmitting card apparatus receives, is a preferred embodiment of the present application. Based on the present application, the display correction apparatus may also be provided between the transmitting card apparatus and the receiving card apparatus.
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. 1A is a schematic structural diagram of a display system according to a first embodiment of the invention.
Fig. 1B is a schematic structural diagram of a display correction apparatus in a display system according to a first embodiment of the present invention.
Fig. 1C is a schematic structural diagram of a card sending device in a display system according to a first embodiment of the present invention.
Fig. 1D is a schematic structural diagram of a display screen body configured with a receiving card in a display system according to a first embodiment of the present invention.
Fig. 1E is another schematic structural diagram of a display system according to a first embodiment of the invention.
Fig. 2A is a flowchart illustrating a display calibration method according to a second embodiment of the invention.
Fig. 2B is a flowchart illustrating a process of image correction for video signal mimo according to a second embodiment of the present invention.
Fig. 2C is a schematic view of a video signal single-input multiple-output image correction processing flow in a display correction method according to a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a display correction apparatus according to a third 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
As shown in fig. 1A, 1B, 1C, 1D and 1E, a display system 10 according to a first embodiment of the present invention includes: a display correction device 11, a sending card device 12, and a display screen body 13 configured with a receiving card.
The display correction device 11 is configured to receive an input video signal, decode the received input video signal to obtain input image data, perform pixel-by-pixel correction on the input image data based on a preset stored pixel correction coefficient to obtain target image data, encode the target image data to obtain a target video signal, and output the target video signal;
specifically, there are two types of conventional display correction devices in the industry at present: one is to use the receiving card as the display correction device, and the other is to use the hardware of the LED lamp panel as the display correction device. On one hand, the mode of using the receiving card as the display correction device may result in the hardware cost of the receiving card being too high and the storage space being limited, and the receiving card may have the contradiction between storing the correction coefficient and implementing other functions due to the hardware memory itself, and the data conversion required for the correction data of the receiving card may cause the data processing speed of the receiving card to decrease. On the other hand, hardware of the LED lamp panel is used as display correction equipment, correction data is stored in the storage hardware of the LED lamp panel, and then the receiving card is used to operate the storage hardware of the lamp panel to achieve the purposes of correction and display control.
In order to solve the above-described existing problems, the first embodiment proposes a separate display correction apparatus 11, and as shown in fig. 1B, the display correction apparatus 11 includes a video input interface 111, a video encoder 112, a memory 113, a processor 114, a video decoder 115, and a video output interface 116.
The video input interface 111 is used for receiving an input video signal. Specifically, the video input interface 111 receives a video signal transmitted from a video source such as a PC, and the video signal may be a format video signal of DVI, HDMI, VGA, or the like. The video signal input by the video input interface 111 may be a multi-input video signal or a single-input video signal. For example, the video signal sent by the PC is 4K, and if the video input interface 111 is an HDMI2.0 interface, the video signal of 4K can be directly received; if the video input interface 111 is an HDMI1.4 interface, the 4K video signal needs to be divided into 4 channels and input to the video input interface 111, and each channel receives only a 1080P video signal (with a resolution of 1920 × 1080).
The video decoder 112 is configured to decode the input video signal to obtain input image data. Specifically, before correcting an input video signal, it is necessary to convert the input video signal into input image data and then perform correction processing on the input image data. Wherein the input video signal is converted into input image data, for example, using the video decoder 112, whereby the input video signal is decoded into the input image data by the video decoder 112. If the input video signals are multiple paths, decoding the video signals of each path respectively to obtain the input image data of the path. Here, when the video signal in the first embodiment is a DVI signal, the video decoder 112 is, for example, an HDMI decoder or a DVI decoder.
The memory 113 is used for presetting the stored pixel correction coefficients. Specifically, the memory 113 in the first embodiment is, for example, a storage medium which is equipped with a flash chip and is not susceptible to data loss when power is off. The memory 113 stores in advance a pixel correction coefficient corresponding to input image data, and is used to perform pixel-by-pixel luminance correction or pixel-by-pixel luminance and chrominance correction on an input image to output a high-quality corrected image. The pixel correction coefficient in the memory 113 may be a preset pixel correction coefficient, or a pixel correction coefficient imported from an upper computer to the memory 113 through a USB interface or a serial port.
The processor 114 is configured to perform pixel-by-pixel correction on the input image data based on a preset stored pixel correction coefficient to obtain target image data. Specifically, the processor 114 in the first embodiment is, for example, an ARM processor. The processor 114 acquires the input image data and the corresponding pixel correction data from the video decoder 112 and the memory 113, respectively, and then performs point-by-point correction on each pixel of the input image data. More specifically, the processor 114, for example, performs superimposition processing on each pixel of the input image data and a correction coefficient of the pixel, and outputs a corrected target image. For multiple video signal inputs, the processor 114 may receive and process only one video signal input, or may receive and process multiple video signal inputs simultaneously. It can be seen that, in the first embodiment, the pixel-by-pixel correction is performed in the processor 114, and the receiving card does not need to perform pixel-by-pixel luminance correction or pixel-by-pixel luminance correction. The input image data is corrected pixel by pixel to pixel brightness correction or pixel by pixel brightness correction.
The video encoder 115 is configured to encode target image data to obtain a target video signal. Specifically, the display correction apparatus 11 outputs a signal format such as a digital video signal or an analog video signal, which encodes target image data by passing the target image data through the video encoder 115 to convert the target image data into a target video signal before outputting the target image data. If the target images are in multiple paths, the target images of each path are respectively coded to obtain target video signals of the path. Here, when the video signal is a DVI signal in the first embodiment, the video encoder 115 is an HDMI encoder or a DVI encoder.
The video output interface 116 is used to output a target video signal. Specifically, the video output interface 116 outputs the target video signal obtained by the video encoder 115. The video signal output by the video output interface 116 may be a multi-output video signal or a single-output video signal.
The transmitting card device 12 is configured to receive a target video signal and convert the received target video signal into target protocol data. Specifically, the output signal format of the display correction device 11 in the first embodiment is, for example, a digital video signal or an analog video signal, and is different from the data protocol of the input signal of the receiving card, so that it is necessary to convert the video signal into the target protocol data by the transmitting card device 12, and then input the target protocol data to the receiving card for display control. Because the tape carrier capability of the transmitting card device 12 is limited, the transmitting card device 12 in the first embodiment may include one transmitting card or multiple transmitting cards, for example, when the target video signal output by the video output interface 116 is a 4K (resolution is 3840 × 2160 or 4096 × 2160) video signal, and when the tape carrier capability of one transmitting card is 1080P (resolution is 1920 × 1080 for example), 4 transmitting cards are required, the video output interface 116 outputs the target video signal to each transmitting card in the transmitting card device 12 in 4 channels, and the resolution of each channel of the video signal is 1080P.
As described above, each of the sending cards is configured as shown in fig. 1C, and includes: a video input interface 121, a video decoder 122, an FPGA unit 123, and an ethernet interface 124.
The video input interface 121 is configured to receive a target video signal output by the display correction apparatus 11. Specifically, the video input interface 121 receives the target video signal output by the video output interface 116.
The video decoder 122 is configured to decode an input target video signal to obtain target image data. Specifically, the video decoder 122 decodes a target video signal input to the transmitting card device 12 to generate target image data for the FPGA unit 123 to perform protocol conversion and data packing.
The FPGA unit 123 is configured to convert the target image data into target protocol data. Specifically, the programmable logic device, for example, the FPGA unit 123 in the transmitting card device 12 performs protocol conversion on the target image data to convert the target image data into target protocol data, such as ethernet protocol data, and then outputs the target protocol data through the network interface.
The ethernet interface 124 is used to output the target protocol data. Specifically, the target protocol data converted by the programmable logic device such as the FPGA unit 123 is output to the receiving card for display control. The target protocol data output by the ethernet interface 124 is ethernet protocol data.
As shown in fig. 1D, the display panel 13 provided with the receiving card includes: a receiving card 131 and an LED display screen 132.
Specifically, the receiving card 131 is configured to receive target protocol data and convert the target protocol data into image data. The receiving card 131 includes an ethernet interface 1311, an FPGA unit 1312, and an LED lamp panel interface 1313.
The ethernet interface 1311 is configured to receive the target protocol data output by the ethernet interface 124.
The FPGA unit 1312 is configured to parse the target protocol data to obtain image data, and perform image capturing to obtain image data belonging to the FPGA unit. Specifically, when the data amount of the target protocol data is large, the plurality of receiving cards need to perform image display control together.
The LED lamp panel interface 1313 is used to output the captured image data. Specifically, the LED lamp panel interface 1313 may be a flat cable interface to output image data and a display control signal to control on/off of the LED lamp on the LED display screen 132, so as to complete image display of the LED display screen 132.
In summary, the first embodiment solves the problem that hardware such as the receiving card or the LED lamp panel is used as the display correction device by configuring the display correction device 11 at the front end of the card sending device 12. The display correction device 11 in the first embodiment is independent, and can independently store correction data or even other conversion data, the input image data is corrected by the display correction device 11, only display control is performed on the receiving card, the utilization rate of the memory of the receiving card is reduced, the LED lamp panel only needs to provide a display platform, and no hardware is required to be provided for the LED lamp panel to store the correction data, so that a series of problems caused by the fact that correction coefficients are stored on hardware such as the receiving card and the LED lamp panel can be solved.
[ second embodiment ]
As shown in fig. 2A, 2B and 2C, a display calibration method 20 according to a second embodiment of the present invention is suitable for a display system including a transmitting card device and a display screen connected to the transmitting card device and configured with a receiving card. As shown in fig. 2A, the display correction method 20 includes:
step S21: receiving an input video signal;
step S23: decoding the received input video signal to obtain input image data;
step S25: performing pixel-by-pixel correction on input image data based on a preset and stored pixel correction coefficient to obtain target image data;
step S27: encoding target image data to obtain a target video signal; and
step S29: and outputting the target video signal to the sending card equipment so as to control the display screen body provided with the receiving card to display images.
Specifically, in the second embodiment, steps S21 to S29 correspond to data processing steps in the correction process of the video input interface 111, the video decoder 112, the processor 114, the video encoder 115, and the video output interface 116 of the display correction apparatus 11 in the first embodiment, respectively. Wherein the preset stored pixel correction coefficient is stored in the memory 113; in the correction process, the processor 114 acquires the corresponding correction coefficient from the memory 113 to perform correction processing on the input image data, so that the pixel-by-pixel brightness correction or pixel-by-pixel brightness correction on the receiving card is not required, and high-quality corrected image data can be obtained. In step S25, the pixel-by-pixel correction is performed by pixel-by-pixel luminance correction or pixel-by-pixel luminance correction.
Further, in step S25, the video signal may be divided into multiple-input multiple-output and single-input multiple-output cases.
For the case of multiple input and multiple output of the video signal, step S25 is shown in fig. 2B, and specifically includes:
step S251: splicing a plurality of input image data respectively corresponding to the plurality of paths of input video signals to obtain spliced image data;
step S253: performing pixel-by-pixel correction on the spliced image data based on a preset and stored pixel correction coefficient to obtain corrected spliced image data; and
step S255: and carrying out segmentation processing on the corrected spliced image data to obtain a plurality of target image data.
Specifically, in the second embodiment, steps S251 to S255 correspond to: when the video signal is a multi-input multi-output video signal, that is, the data amount of the video input signal is too large and the video input signal needs to be divided into multiple paths of video signals for input, the multiple paths of input video signals need to be decoded by the multiple paths of video decoders 112 respectively to obtain input image data of the multiple paths of video signals, the input image data are firstly spliced to obtain spliced image data, and then the spliced image data is corrected with the correction coefficients correspondingly stored in the memory 113 to obtain corrected spliced image data. Then, due to the problem of too large data amount, the corrected stitched image data needs to be divided into multiple paths of target image data and then output to the transmitting card device 12. For example, for the HDMI1.4 interface, only 1080P video signals (resolution 1920 x 1080) can be received all the way, for a video source such as a 4K video signal input by a PC, the 4K video signal needs to be divided into 4 channels of input video signals, each channel is a 1080P video signal, and then decoded by the video decoder 112 to obtain input image data corresponding to the 4 channels of video signals respectively, since the correction coefficient stored in the memory 113 is a correction coefficient corresponding to a 4K video signal, therefore, 4 paths of input image data need to be spliced firstly to obtain spliced input image data, the input image data thus stitched may be subjected to correction processing with a correction coefficient corresponding to a 4K video signal stored in advance in the memory 113 to obtain corrected stitched image data, the corrected stitched image data is divided into 4 target image data, and the 4 target image data is output to the transmitting card device 12.
For the case of single input and multiple output of the video signal, step S25 is shown in fig. 2C, and specifically includes:
step S252: performing pixel-by-pixel correction on input image data based on a preset stored pixel correction coefficient to obtain corrected image data; and
step S254: the corrected image data is subjected to segmentation processing to obtain a plurality of pieces of target image data.
Specifically, in the second embodiment, steps S252 to S254 correspond to: when the video signal is in a single-input multi-output state, that is, the input video signal is decoded by the video decoder 112 to obtain input image data, and the input image data is corrected with the correction coefficient stored in the memory 113 to obtain corrected image data; for the transmitting card device 12, the problem that the data amount of the corrected image data is too large is that one transmitting card in the transmitting card device 12 cannot receive the corrected image data, and the corrected image data needs to be divided into multiple paths of target image data, and the multiple paths of target image data are input to a plurality of transmitting cards in the transmitting card device 12 respectively. For example, for the HDMI2.0 interface, a 4K video signal can be directly received, for a 4K video signal input by a video source, such as a PC, the input image data is obtained by decoding through the video decoder 112, and the input image data is corrected with a correction coefficient corresponding to the 4K video signal preset and stored in the memory 113 to obtain corrected image data, because one sending card in the sending card device 12 cannot receive the input image data corresponding to the 4K video signal, and one sending card can only receive the input image data corresponding to a 1080P video signal, for example, it is necessary to divide the corrected image data into 4 paths of target image data, each path of target image data is the corrected image data corresponding to the 1080P video signal, and then the 4 paths of target image data are respectively output to 4 sending cards in the sending card device 12.
In summary, the display correction method in the second embodiment solves the problem that hardware such as the receiving card or the LED lamp panel is used as the display correction device. The display correction method 20 in the second embodiment stores correction data independently by the display correction device 11 in the first embodiment, performs correction processing on an input image or even performs other conversion data, performs only display control on the receiving card, reduces the utilization rate of the memory of the receiving card, and the LED lamp panel only needs to provide a display platform without providing any hardware for storing the correction data by the LED lamp panel, thereby solving a series of problems caused by storing correction coefficient data on hardware such as the receiving card and the LED lamp panel.
[ third embodiment ]
As shown in fig. 3, a display correction apparatus 30 according to a third embodiment of the present invention is suitable for use in, for example, the display system 10 of the first embodiment, which includes a transmitting card device and a display screen body connected to the transmitting card device and configured with a receiving card. Specifically, the display correction apparatus 30 is, for example, used to execute the display correction method 20 as in the second embodiment, and the display correction apparatus 30 includes:
a receiving module 31 for receiving an input video signal;
a decoding module 32, configured to decode the received input video signal to obtain input image data;
the correction module 33 is configured to perform pixel-by-pixel correction on the input image data based on a preset and stored pixel correction coefficient to obtain target image data;
the encoding module 34 is configured to encode target image data to obtain a target video signal; and
and the output module 35 is configured to output the target video signal to the card sending device, so as to control the display screen body configured with the receiving card to perform image display.
In summary, the display correction apparatus 30 in the third embodiment can solve the problem that hardware such as the receiving card and the LED lamp panel is used as the display correction device. The display correction device 30 in the third embodiment is independent, and can independently store correction data or even other conversion data, and the input image is corrected by the independent device, and only display control is performed on the receiving card, so that the utilization rate of the memory of the receiving card can be reduced, and the LED lamp panel only needs to provide a display platform, and does not need to provide any hardware for storing correction data, so that a series of problems caused by storing correction coefficient data on hardware such as the receiving card and the LED lamp panel can be solved.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of units/modules is merely a logical division, and an actual implementation may have another division, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not implemented. 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/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units/modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.
The integrated units/modules, which are implemented in the form of software functional units/modules, 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 one or more processors of 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 (11)
1. A display system, comprising:
the display correction device is used for receiving an input video signal, decoding the received input video signal to obtain input image data, correcting the input image data on a pixel-by-pixel basis based on a preset and stored pixel correction coefficient to obtain target image data, encoding the target image data to obtain a target video signal and outputting the target video signal;
the sending card equipment is connected with the display correction equipment and used for receiving the target video signal and converting the received target video signal into target protocol data; and
and the display screen body is provided with a receiving card, is connected with the sending card equipment, and is used for receiving the target protocol data and displaying images based on the received target protocol data.
2. The display system of claim 1, wherein the pixel-by-pixel correction is a pixel-by-pixel luminance correction or a pixel-by-pixel luminance correction; the target protocol data is Ethernet protocol data.
3. The display system of claim 1, wherein the receiving card does not perform pixel-by-pixel luminance correction and pixel-by-pixel luminance correction.
4. The display system of claim 1, wherein the display correction device comprises:
a video input interface for receiving the input video signal;
the video decoder is connected with the video interface and used for decoding the input video signal to obtain the input image data;
the memory is used for presetting and storing the pixel correction coefficient;
the processor is connected with the video decoder and the memory and used for correcting the input image data pixel by pixel based on the preset and stored pixel correction coefficient to obtain target image data;
the video encoder is connected with the processor and used for encoding the target image data to obtain a target video signal; and
and the video output interface is connected with the video encoder and used for outputting the target video signal.
5. The display system of claim 4, wherein the video input interfaces are multiplexed, and the multiplexed video input interfaces are respectively connected to the processor through the corresponding video decoders; the video output interfaces are in multiple paths, and the multiple paths of video output interfaces are respectively connected with the processor through the corresponding video encoders.
6. A display correction method is suitable for a display system comprising a sending card device and a display screen body which is connected with the sending card device and is provided with a receiving card; the display correction method is characterized by comprising the following steps:
receiving an input video signal;
decoding the received input video signal to obtain input image data;
performing pixel-by-pixel correction on the input image data based on a preset and stored pixel correction coefficient to obtain target image data;
encoding the target image data to obtain a target video signal; and
and outputting the target video signal to the sending card equipment so as to control the display screen body configured with the receiving card to display images.
7. The display correction method of claim 6, wherein the pixel-by-pixel correction is a pixel-by-pixel luminance correction or a pixel-by-pixel luminance correction.
8. The display correction method of claim 7, wherein the receiving card does not perform pixel-by-pixel luminance correction and pixel-by-pixel luminance-chrominance correction.
9. The display correction method of claim 6, wherein the performing pixel-by-pixel correction on the input image data based on preset stored pixel correction coefficients to obtain target image data comprises:
splicing a plurality of input image data respectively corresponding to the plurality of paths of input video signals to obtain spliced image data;
performing pixel-by-pixel correction on the spliced image data based on the preset and stored pixel correction coefficient to obtain the corrected spliced image data; and
and carrying out segmentation processing on the corrected spliced image data to obtain a plurality of target image data.
10. The display correction method of claim 6, wherein the performing pixel-by-pixel correction on the input image data based on preset stored pixel correction coefficients to obtain target image data comprises:
performing pixel-by-pixel correction on the input image data based on the preset and stored pixel correction coefficient to obtain corrected image data; and
and carrying out segmentation processing on the corrected image data to obtain a plurality of copies of the target image data.
11. A display correction device is characterized in that the device is suitable for being applied to a display system comprising a sending card device and a display screen body which is connected with the sending card device and is provided with a receiving card; characterized in that the display correction apparatus is configured to execute the display correction method according to any one of claims 6 to 10, and the display correction apparatus includes:
a receiving module for receiving an input video signal;
the decoding module is used for decoding the received input video signal to obtain input image data;
the correction module is used for correcting the input image data pixel by pixel based on a preset and stored pixel correction coefficient to obtain target image data;
the encoding module is used for encoding the target image data to obtain a target video signal; and
and the output module is used for outputting the target video signal to the sending card equipment so as to control the display screen body configured with the receiving card to display images.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465381.3A CN112017587B (en) | 2019-05-30 | 2019-05-30 | Display system, display correction method and display correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465381.3A CN112017587B (en) | 2019-05-30 | 2019-05-30 | Display system, display correction method and display correction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112017587A true CN112017587A (en) | 2020-12-01 |
| CN112017587B CN112017587B (en) | 2021-12-07 |
Family
ID=73501892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910465381.3A Active CN112017587B (en) | 2019-05-30 | 2019-05-30 | Display system, display correction method and display correction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112017587B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990246A (en) * | 2021-11-25 | 2022-01-28 | 西安诺瓦星云科技股份有限公司 | Correction method, device and system of display unit |
| CN115460443A (en) * | 2021-06-09 | 2022-12-09 | 海信视像科技股份有限公司 | Display device, image acquisition device, video data processing method and display method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668569A (en) * | 1996-04-05 | 1997-09-16 | Rainbow Displays Inc. | Tiled, flat-panel displays with luminance-correcting capability |
| CN101089945A (en) * | 2007-06-20 | 2007-12-19 | 中国科学院长春光学精密机械与物理研究所 | Optical color parameter correction method and device of plane display |
| CN101692326A (en) * | 2009-09-01 | 2010-04-07 | 惠州市德赛智能科技有限公司 | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen |
| CN103268752A (en) * | 2013-05-23 | 2013-08-28 | 无锡市崇安区科技创业服务中心 | LED display screen brightness and chrominance correction system |
| CN103680411A (en) * | 2013-12-30 | 2014-03-26 | 深圳市大族元亨光电股份有限公司 | Single-wire transmission circuit and method of LED (Light-Emitting Diode) display module single-point correction data |
| CN203733445U (en) * | 2014-03-06 | 2014-07-23 | 北京泽视科技有限公司 | Large screen detection and display device |
| CN105096815A (en) * | 2014-05-06 | 2015-11-25 | 西安诺瓦电子科技有限公司 | Method for correcting brightness and chrominance of LED display screen, and LED display screen system |
| CN105448236A (en) * | 2015-11-13 | 2016-03-30 | 西安诺瓦电子科技有限公司 | LED correction coefficient data segmentation method |
| CN208157015U (en) * | 2018-05-04 | 2018-11-27 | 上海程科电子科技有限公司 | LED point-to-point correction system based on HDMI |
| CN208706212U (en) * | 2018-09-10 | 2019-04-05 | 卡莱特（深圳）云科技有限公司 | A kind of LED display correction system |
-
2019
- 2019-05-30 CN CN201910465381.3A patent/CN112017587B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668569A (en) * | 1996-04-05 | 1997-09-16 | Rainbow Displays Inc. | Tiled, flat-panel displays with luminance-correcting capability |
| CN101089945A (en) * | 2007-06-20 | 2007-12-19 | 中国科学院长春光学精密机械与物理研究所 | Optical color parameter correction method and device of plane display |
| CN101692326A (en) * | 2009-09-01 | 2010-04-07 | 惠州市德赛智能科技有限公司 | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen |
| CN103268752A (en) * | 2013-05-23 | 2013-08-28 | 无锡市崇安区科技创业服务中心 | LED display screen brightness and chrominance correction system |
| CN103680411A (en) * | 2013-12-30 | 2014-03-26 | 深圳市大族元亨光电股份有限公司 | Single-wire transmission circuit and method of LED (Light-Emitting Diode) display module single-point correction data |
| CN203733445U (en) * | 2014-03-06 | 2014-07-23 | 北京泽视科技有限公司 | Large screen detection and display device |
| CN105096815A (en) * | 2014-05-06 | 2015-11-25 | 西安诺瓦电子科技有限公司 | Method for correcting brightness and chrominance of LED display screen, and LED display screen system |
| CN105448236A (en) * | 2015-11-13 | 2016-03-30 | 西安诺瓦电子科技有限公司 | LED correction coefficient data segmentation method |
| CN208157015U (en) * | 2018-05-04 | 2018-11-27 | 上海程科电子科技有限公司 | LED point-to-point correction system based on HDMI |
| CN208706212U (en) * | 2018-09-10 | 2019-04-05 | 卡莱特（深圳）云科技有限公司 | A kind of LED display correction system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115460443A (en) * | 2021-06-09 | 2022-12-09 | 海信视像科技股份有限公司 | Display device, image acquisition device, video data processing method and display method |
| CN113990246A (en) * | 2021-11-25 | 2022-01-28 | 西安诺瓦星云科技股份有限公司 | Correction method, device and system of display unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112017587B (en) | 2021-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11178412B2 (en) | Method and apparatus of encoding and decoding a color picture | |
| US10511803B2 (en) | Video signal transmission method and device | |
| KR102523233B1 (en) | Method and device for decoding a color picture | |
| JP6472429B2 (en) | Method, apparatus and system for determining LUMA values | |
| JP6947893B2 (en) | Coding and decryption methods and corresponding devices | |
| CA2990988A1 (en) | Methods and devices for encoding and decoding a hdr color picture | |
| WO2010006015A2 (en) | Color gamut scalability techniques | |
| KR20220020367A (en) | Image processing method and apparatus | |
| CN112068790B (en) | Tiled display system | |
| CN112017587B (en) | Display system, display correction method and display correction device | |
| EP3453175B1 (en) | Method and apparatus for encoding/decoding a high dynamic range picture into a coded bistream | |
| KR102280094B1 (en) | Method for generating a bitstream relative to image/video signal, bitstream carrying specific information data and method for obtaining such specific information | |
| US20180014024A1 (en) | Method and apparatus of encoding and decoding a color picture | |
| KR20170039069A (en) | independent multi-source display device and method for displaying content on independent multi-source display device | |
| CN113380181A (en) | Display screen correction system | |
| CN220798352U (en) | Display system | |
| CN112068789B (en) | Distribution plate, lamp plate and spliced display system | |
| CN114866779A (en) | Image coding method, image reconstruction method, image coding device, image reconstruction device, electronic equipment and storage medium | |
| CN118301358A (en) | Method for independently encoding and decoding RGB image data and transmitting RGB image data | |
| CN116916109A (en) | Data transmission method, device, equipment, system and medium of LED display screen | |
| CN113470563A (en) | Display screen correction system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |