CN113380184B - Correction method and device, LED display screen and computer equipment - Google Patents
Correction method and device, LED display screen and computer equipment Download PDFInfo
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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]
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
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Abstract
The invention relates to a correction method and a device, wherein the method comprises the following steps: receiving correction coefficients of the LED box body sent by an upper computer, wherein the correction coefficients are multiple, and each correction coefficient corresponds to one LED box body direction; respectively storing a plurality of correction coefficients into non-easy-vector storage media of the LED box body according to a preset storage strategy; receiving a display control instruction sent by an upper computer; acquiring the current direction of the LED box body, and determining a target correction coefficient according to the correction coefficient reading instruction and the current direction of the LED box body; the method and the device provided by the invention pre-store a plurality of correction coefficients representing different directions of the LED box body, and after receiving a display control instruction, determine a correction coefficient corresponding to the current direction according to the current direction of the LED box body to generate the display control signal, thereby effectively improving the correction effect and the display effect.
Description
Technical Field
The invention relates to the field of correction processing, in particular to a correction method and device, an LED display screen and computer equipment.
Background
At present, when the correction processes such as brightness correction or bright and dark line repair correction and the like are required to be performed on an LED display screen, a receiving card or an LED box body in the LED box body needs to store a corresponding correction coefficient in advance, wherein each correction coefficient is composed of a plurality of correction coefficients, each correction coefficient corresponds to one LED lamp point (brightness of each lamp point before leaving factory may be inconsistent, or bright and dark lines are generated at the boundary between the LED box body and the LED box body between the LED module group and the LED box body, a dark seam is generated when a physical seam is too large, a bright seam is generated when the physical seam is smaller than the distance between the lamp points, so that brightness uniformity of the LED box body or the LED screen body needs to be maintained or the bright and dark lines need to be eliminated through the correction coefficients), when the position of the LED box body or the LED screen body (composed of a plurality of LED box bodies) is changed, an image picture can be changed along with the LED box body or the LED screen body, in order to maintain the original display condition of the image picture (the image picture needs to be constantly controlled to be a forward display condition), the image picture needs to be rotated, the position of the LED lamp point is changed due to the rotation of the image picture, therefore, the correction coefficients are not corresponding to the correction coefficients stored in the LED box in advance, for example, if there are 4 LED light points, the correction coefficients stored in advance and corresponding to the LED light points are 0.8-0.7-0.6-0.5 (the correction coefficient corresponding to each light point is unique), if the LED box is changed in position (that is, the orientation of the LED box is changed, if the direction of the LED box is changed, and if the direction is changed from the right top of the LED box to the right bottom of the LED box after the LED box is rotated clockwise by 180 degrees around the top left corner, the image plane needs to be rotated to be suitable for the orientation of the LED box before), the correction coefficients corresponding to the 4 LED light points should be 0.5-0.6-0.7-0.8 (rotated by 180 degrees); in summary, if the pre-stored correction coefficient is used to correct the rotated LED lamp point, the pre-stored correction coefficient cannot meet the correction requirement of the rotated LED lamp point, so that the correction effect and the display effect of the LED box or the LED display screen are affected to some extent. Therefore, a new technical solution to solve the above problems needs to be found by those skilled in the art.
Disclosure of Invention
Aiming at the problems, the invention provides a correction method, which comprises the steps of receiving correction coefficients of an LED box body sent by an upper computer, wherein the correction coefficients are multiple, and each correction coefficient corresponds to one LED box body direction; respectively storing a plurality of correction coefficients into non-easy-vector storage media of the LED box body according to a preset storage strategy; receiving a display control instruction sent by an upper computer, wherein the display control instruction comprises a correction coefficient reading instruction and display data; acquiring the current direction of the LED box body, and reading a correction coefficient corresponding to the current direction from a non-easy-to-vector storage medium as a target correction coefficient according to a correction coefficient reading instruction and the current direction; and generating a display control signal according to the display data and the target correction coefficient, and sending the display control signal to an LED driving chip of the LED box body to control the LED box body to display the picture.
Further, respectively storing the multiple correction coefficients into a non-easy-to-vector storage medium of the LED box according to a preset storage strategy, including: a plurality of storage areas are defined in a non-volatile storage medium, and each storage area corresponds to one direction of an LED box body; and respectively storing each correction coefficient into a corresponding storage area according to the direction of the corresponding LED box body.
Furthermore, the LED box body comprises a plurality of LED modules and a receiving card connected with the LED modules, and the non-easy-vector storage medium is the receiving card or a storage chip in each LED module.
Further, if the non-volatile storage medium is a storage chip in each LED module, respectively storing the multiple correction coefficients into the non-volatile storage medium of the LED box according to a preset storage policy, the method further includes: and according to a preset correction coefficient splitting strategy, splitting each correction coefficient into a plurality of groups of sub-correction coefficients corresponding to the LED modules one by one, and respectively storing the plurality of groups of sub-correction coefficients corresponding to each correction coefficient into the storage chips of the corresponding LED modules.
Further, obtaining a current direction of the LED box, reading a correction coefficient corresponding to the current direction from the non-volatile storage medium as a target correction coefficient according to the correction coefficient reading instruction and the LED box direction corresponding to each correction coefficient, including: acquiring the current direction of the LED box body, and determining one correction coefficient from a plurality of correction coefficients stored in a non-volatile storage medium as a target correction coefficient according to the current direction; and reading the correction coefficient corresponding to each LED module in the LED box body line by line from the target correction coefficient according to the size of the LED module in the LED box body.
Further, the directions of the LED box body at least include 0 degree, 90 degrees, 180 degrees and 270 degrees.
The invention also provides a correcting device, which comprises a receiving module, a storage control module, a correction coefficient reading module and a display control signal generating module, wherein: the receiving module is connected with the storage control module, the correction coefficient reading module and the display control signal generating module and used for receiving the correction coefficients of the LED box body sent by the upper computer and sending the correction coefficients to the storage control module, wherein the correction coefficients are in multiple parts, each part of the correction coefficients corresponds to one direction of the LED box body, the receiving module is also used for receiving a display control instruction sent by the upper computer and sending the display control instruction to the correction coefficient reading module and the display control signal generating module, and the display control instruction comprises a correction coefficient reading instruction and display data; the storage control module is connected with the receiving module and respectively stores the multiple correction coefficients into non-volatile storage media of the LED box body according to a preset storage strategy; the correction coefficient reading module is connected with the receiving module and the display control signal generating module and used for acquiring the current direction of the LED box body, reading a correction coefficient corresponding to the current direction from the non-easily-oriented storage medium as a target correction coefficient according to a correction coefficient reading instruction and the current direction, and sending the target correction coefficient to the display control signal generating module; and the display control signal generation module is used for generating a display control signal according to the display data and the target correction coefficient and sending the display control signal to an LED driving chip of the LED box body so as to control the LED box body to display the picture.
Further, the storage control module further comprises an area dividing unit and a storage unit connected with the area dividing unit, wherein: the region dividing unit is used for dividing a plurality of storage regions in the non-volatile storage medium, and each storage region corresponds to one LED box body direction; the storage unit is used for storing each correction coefficient into the corresponding storage area according to the corresponding direction of the LED box body.
The invention also provides an LED display screen which comprises a plurality of LED boxes, wherein each LED box comprises a plurality of LED modules and a receiving card connected with the LED modules, and the correcting device is arranged on the receiving card.
The invention also provides computer equipment which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the correction method when executing the computer program.
The correction method, the correction device, the LED display screen and the computer equipment provided by the invention at least have the following beneficial effects: the method comprises the steps of pre-storing a plurality of correction coefficients corresponding to different LED box directions in a non-easy-to-vector storage medium of the LED box, reading one correction coefficient corresponding to the current direction as a target correction coefficient according to the current direction of the LED box after receiving a display control instruction, generating a display control signal according to the target correction coefficient and display data, correcting the LED box and enabling the LED box to display a picture, and solving the problem that when the LED box is spliced into an LED display screen, the pre-stored one correction coefficient cannot correspond to the LED box in the current direction due to the change of the direction of the LED box, so that the correction effect cannot reach the expected correction effect, further improving the display effect of the LED box, and further improving the overall display effect of the LED screen body consisting of a plurality of LED boxes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a calibration method according to an embodiment of the present invention;
FIG. 2 is a schematic view of an LED housing in a standard orientation in an embodiment of the invention;
FIG. 3 is a first schematic view of an LED housing in a current orientation according to an embodiment of the present invention;
FIG. 4 is a second schematic view of the LED box in the current direction according to the embodiment of the invention;
FIG. 5 is a schematic structural diagram of an LED box according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating another calibration method according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a calibration apparatus according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a memory control module according to an embodiment of the invention;
the system comprises a 1-LED box body, a 101-receiving card, a 102-LED module, a 701-receiving module, a 702-storage control module, a 703-correction coefficient reading module, a 704-display control signal generating module, a 7021-region dividing unit and a 7022-storage unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.
In one embodiment of the present invention, as shown in fig. 1, a calibration method is disclosed, and specifically, the main implementation of the method is a receiving card in an LED box. The method comprises the following steps:
step S101: and receiving correction coefficients of the LED box body sent by the upper computer, wherein the correction coefficients are multiple, and each correction coefficient corresponds to one LED box body direction.
In this embodiment, the upper computer refers to a computer capable of directly sending an operation command, the correction coefficient may be calculated in advance by the correction system according to the characteristics of the light points (the calculation method mainly includes calculating the brightness average value of each light point, and determining the brightness correction coefficient required to be adjusted to the brightness average value according to the brightness average value), the correction coefficient is sent to the receiving card of the LED box by the upper computer for storage, and the LED box may be corrected according to the pre-stored correction coefficient when the LED box is used to display a picture, so as to improve the display effect.
It should be noted that in this embodiment, the upper computer sends a plurality of correction coefficients, and each correction coefficient corresponds to one LED box direction.
Further, in this embodiment, the LED box directions corresponding to the multiple correction coefficients sent by the upper computer at least include 0 ° (360 °), 90 °, 180 ° and 270 °, and of course, the LED box directions may also include any other number of degrees, and the correction system may be controlled by a technician according to the actual splicing requirement of the LED boxes. The direction of the LED box can be understood as the direction of the box, and the direction shown directly above fig. 2 (the side AB is directly above the box) is the positive direction of the LED box (the direction shown in fig. 2 is the standard direction, and can be represented by 0 ° or 360 °), once the direction of the box is changed, that is, the side AB is not directly above the box, in order to ensure that the image displayed in the LED box is the positive direction, the general operation is to rotate the image displayed in the LED box which has undergone rotation.
Specifically, in this embodiment, the correction coefficient includes a correction coefficient obtained in a process of performing correction such as luminance correction and bright and dark line correction on the LED box or the LED display screen.
Taking brightness correction as an example, after each LED box is produced, in order to improve the uniformity of the display brightness, the brightness correction is performed on the LED box, and the specific correction method is as follows: the LED box body is lightened, the brightness of the LED lamp points is obtained one by one, the correction coefficient of each LED lamp point is calculated according to the actual brightness and the average brightness of each LED lamp point on the LED box body, the correction coefficient of each LED lamp point can be arranged according to the position of each LED lamp point in the LED box body, a correction coefficient matrix (namely the correction coefficient mentioned in the embodiment) consisting of a plurality of correction coefficients is formed, and then the LED lamp points at the corresponding positions in the LED box body are corrected according to the positions of the correction coefficients in the correction coefficients. However, when the LED boxes are spliced to form the LED display screen, the direction of the LED boxes may change relative to the direction of the LED boxes when the correction coefficients are generated, and the positions of the correction coefficients in the generated correction coefficients are no longer consistent with the positions of the LED light points corresponding to the correction coefficients.
In this embodiment, a correction coefficient of the LED box may be obtained by calculating by the correction system as a standard correction coefficient, and a direction of the LED box when the standard correction coefficient is calculated is taken as a standard direction, specifically, the standard direction may be recorded as 0 °, and then the standard correction coefficient is rotated by N ° in a clockwise or counterclockwise direction based on the standard correction coefficient and the standard direction, so as to obtain a corresponding correction coefficient after the rotation by N °. More specifically, the LED housing direction corresponding to the correction factor after rotating N ° may be denoted as N °. N is at least 0, 90, 180, 270, and may include other values within 0-360, as the present invention is not limited in this respect. Further, in order to distinguish whether the rotation direction is counterclockwise or clockwise, N may be a positive number if the rotation direction is clockwise, and a negative number if the rotation direction is counterclockwise.
Step S102: and respectively storing the multiple correction coefficients into non-easy-vector storage media of the LED box body according to a preset storage strategy.
In this embodiment, the non-volatile storage medium refers to a storage chip of a receiving card or an LED module, for example, the storage chip may be an SPI (serial peripheral interface) flash.
Specifically, in this embodiment, respectively storing multiple correction coefficients into a non-volatile storage medium of the LED box according to a preset storage policy includes: a plurality of storage areas are defined in a non-volatile storage medium, and each storage area corresponds to one direction of an LED box body; and respectively storing each correction coefficient into a corresponding storage area according to the direction of the corresponding LED box body.
That is, similarly, how many sets of correction coefficients with different LED box directions are received by the receiving card, how many storage regions are defined in the non-volatile storage medium, and each storage region corresponds to 1 LED box direction. For example, if the directions of the LED boxes corresponding to 4 correction coefficients received by the receiving card are 0 °, 90 °, 180 °, and 270 °, 4 storage areas are defined in the non-volatile storage medium, and the directions of the LED boxes corresponding to 0 °, 90 °, 180 °, and 270 °, respectively. And storing each correction coefficient into a corresponding storage region according to the direction of the LED box body corresponding to the correction coefficient, namely storing a 0-degree correction coefficient into a 0-degree storage region, storing a 90-degree correction coefficient into a 90-degree storage region, storing a 180-degree correction coefficient into a 180-degree storage region, and storing a 270-degree correction coefficient into a 270-degree storage region.
Step S103: and receiving a display control instruction sent by the upper computer, wherein the display control instruction comprises a correction coefficient reading instruction and display data.
The display control instruction is sent by a user through an upper computer controlled by the user, and the upper computer is in communication connection with a receiving card in the LED box body so as to realize information transmission. Specifically, the display control command includes a correction coefficient reading command and display data, and more specifically, the display data includes various display parameters such as image data, a size of a display area of the LED box, and brightness.
Step S104: and acquiring the current direction of the LED box body, and reading a correction coefficient corresponding to the current direction from the non-easy-to-vector storage medium as a target correction coefficient according to the correction coefficient reading instruction and the current direction.
Specifically, in this embodiment, the current direction of the LED box can be represented by an angle of the current direction of the LED box rotating compared with the standard direction of the LED box.
For example, if the four vertices of the LED box are A, B, C, D, where the standard correction factor is calculated, as shown in fig. 2, the direction of the LED box in fig. 2 is the standard direction, where the side AB is the side directly above the LED box. When the LED boxes are spliced, the direction of the LED boxes changes, as shown in fig. 3 and 4, which is the current direction of the LED boxes after the direction change. The LED housing of fig. 3 is oriented downward and the LED housing of fig. 4 is oriented leftward.
In fig. 3, the edge AB is the edge right below the LED box, and the current direction of the LED box is rotated by 180 ° clockwise compared to the standard direction, and the current direction of the LED box is recorded as 180 °; if the current direction of the LED box is rotated by 180 degrees in the counterclockwise direction compared to the standard direction with respect to the counterclockwise direction, the current direction of the LED box is marked as-180 °. In fig. 4, the side AB is the side on the left side of the LED box, and the LED box rotates clockwise 270 ° based on the clockwise direction, and the current direction of the LED box is 270 °. If the current direction of the LED box is rotated by 90 ° in the counterclockwise direction compared to the standard direction with respect to the counterclockwise direction, the current direction of the LED box is recorded as-90 °.
Step S105: and generating a display control signal according to the display data and the target correction coefficient, and sending the display control signal to an LED driving chip of the LED box body to control the LED box body to display the picture.
Specifically, in this embodiment, after the target correction coefficient is read in step S104, the target correction coefficient is loaded into the memory of the receiving card of the LED box, and then the display control signal is generated according to the display data and the target correction coefficient. Further, in this embodiment, the memory of the card received by the LED box may be an SDRAM (synchronous dynamic random access memory), a DDR2 memory (Double Data Rate 2), a DDR3 memory, or a DDR4 memory, which is not limited in this disclosure.
In the embodiment, a plurality of correction coefficients are stored in a nonvolatile storage medium of an LED box in advance, each correction coefficient corresponds to one LED box direction, when a display control instruction sent by an upper computer is received, the current direction of the LED box is obtained, an instruction is read according to the current direction of the LED box and the correction coefficients, one correction coefficient corresponding to the current direction of the LED box is determined from the plurality of pre-stored correction coefficients to be used as a target correction coefficient, a display control signal is generated by using the target correction coefficient and display data to control the display of the LED box, no matter whether the LED box is rotated when being spliced into an LED screen, one correction coefficient corresponding to the current direction of the LED box can be determined from the non-easy-oriented storage medium, so that the correction effect can reach the expected correction effect, the display effect of the LED box is improved, and the display effect of an LED display screen composed of the LED boxes is further improved, the viewing experience of the user is improved.
In another embodiment of the present invention, as shown in fig. 5, the LED box 1 includes a plurality of LED modules 102 and a receiving card 101 connected to the plurality of LED modules 102. The non-volatile storage medium is the receiving card 101 or the non-volatile storage medium is a storage chip in each LED module 102, and the specific storage chip may be a SPIflash or other storage chips.
In another embodiment of the present invention, if the non-easy-to-vector storage medium is a storage chip in each LED module, the method further includes the following steps: and according to a preset correction coefficient splitting strategy, splitting each correction coefficient into a plurality of groups of sub-correction coefficients corresponding to the LED modules one by one, and respectively storing the plurality of groups of sub-correction coefficients corresponding to each correction coefficient into the storage chips of the corresponding LED modules.
Specifically, the LED box 1 is composed of a plurality of LED modules 102, each LED module 102 further includes a plurality of LED light points, so if each correction coefficient is stored in a memory chip of the LED module 102, each correction coefficient needs to be split according to the LED module 102, and the correction coefficient value corresponding to the LED light point on each LED module 102 is used as a group of sub-correction coefficients, and the sub-correction coefficients are stored in the LED module 102 corresponding to the sub-correction coefficients.
Furthermore, as a plurality of correction coefficients need to be stored, that is, a plurality of groups of sub-correction coefficients need to be stored in the memory chip of each LED module, similarly, each group of sub-correction coefficients corresponds to one LED box direction, that is, a plurality of memory areas can be defined in the memory chip of the LED module, and each memory area corresponds to one LED box direction; and respectively storing each group of sub-correction coefficients into corresponding storage areas according to the corresponding direction of the LED box body.
It can be understood that if the non-volatile storage medium is a receiving card, the multiple correction coefficients may be stored in multiple storage areas in the receiving card according to the corresponding LED box directions.
In another embodiment of the present invention, if the LED box directions are four directions of 0 °, 90 °, 180 ° and 270 °, that is, 4 correction coefficients corresponding to the above 4 directions are stored in advance in the non-volatile storage medium of the LED box, 4 storage regions can be defined in the non-volatile storage medium, which are a 0 ° storage region, a 90 ° storage region, a 180 ° storage region and a 270 ° storage region, respectively, and further, for convenience of reading, the 0 ° storage region and the 180 ° storage region can be defined as a vertical storage region, and the 90 ° storage region and the 270 ° storage region can be defined as a horizontal storage region. If the direction of the LED box body is 0 degree, a corresponding 0-degree storage area is determined from the vertical storage area, a corresponding correction coefficient is read from the 0-degree storage area, if the direction of the LED box body is 90 degrees, a corresponding 90-degree storage area is determined from the horizontal storage area, a corresponding correction coefficient is read from the 90-degree storage area, and if the direction of the LED box body is 180 degrees or 270 degrees, the corresponding correction coefficient is read according to the same method, so that redundant description is omitted.
In another embodiment of the present invention, as shown in fig. 6, the method includes the steps of obtaining a current direction of the LED box, reading a correction coefficient corresponding to the current direction from the non-volatile storage medium as a target correction coefficient according to a correction coefficient reading instruction and the current direction, and further including:
step S1041: acquiring the current direction of the LED box body, and determining one correction coefficient from a plurality of correction coefficients stored in a non-easy-to-vector storage medium as a target correction coefficient according to the current direction and the direction of the LED box body corresponding to each correction coefficient;
specifically, if the non-volatile storage medium is a storage chip of the LED module, the sub-correction coefficient corresponding to the current direction stored in the storage chip of each LED module is used as the target correction coefficient according to the current direction of the LED box. And if the non-volatile storage medium is a receiving card, taking a correction coefficient corresponding to the current direction stored in the receiving card as a target correction coefficient.
Step S1042: and reading the correction coefficient corresponding to each LED module in the LED box body line by line from the target correction coefficient according to the size of the LED module in the LED box body.
The invention also provides a calibration device, which comprises a receiving module 701, a storage control module 702, a calibration coefficient reading module 703 and a display control signal generating module 704, wherein:
the receiving module 701 is connected with the storage control module 702, the correction coefficient reading module 703 and the display control signal generating module 704, and is configured to receive correction coefficients of the LED box sent by the upper computer and send the correction coefficients to the storage control module 702, where the correction coefficients are multiple, each correction coefficient corresponds to one LED box direction, the receiving module is further configured to receive a display control instruction sent by the upper computer and send the display control instruction to the correction coefficient reading module and the display control signal generating module, and the display control instruction includes a correction coefficient reading instruction and display data;
the storage control module 702 is connected with the receiving module 701, and respectively stores the multiple correction coefficients into the non-volatile storage medium of the LED box body according to a preset storage strategy;
the correction coefficient reading module 703 is connected to the receiving module 701 and the display control signal generating module 704, and is configured to obtain the current direction of the LED box, read a correction coefficient corresponding to the current direction from the non-volatile storage medium as a target correction coefficient according to a correction coefficient reading instruction, and send the target correction coefficient to the display control signal generating module 704;
and the display control signal generating module 704 is configured to generate a display control signal according to the display data and the target correction coefficient, and send the display control signal to an LED driving chip of the LED box to control a display image of the LED box.
In another embodiment of the present invention, as shown in fig. 8, the storage control module 702 further includes an area dividing unit 7021 and a storage unit 7022 connected to the area dividing unit, where:
the region dividing unit 7021 is configured to divide a plurality of storage regions in the non-volatile storage medium, where each storage region corresponds to one LED box direction;
the storage unit 7022 is configured to store each correction coefficient into a corresponding storage area according to a corresponding direction of the LED box.
The invention also provides an LED display screen which comprises a plurality of LED boxes, wherein each LED box comprises a plurality of LED modules and a receiving card connected with the LED modules, and the correcting device is arranged on the receiving card.
The invention also provides computer equipment which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the correction method when executing the computer program.
According to the correction method, the correction device, the LED display screen and the computer equipment, a plurality of correction coefficients are stored in a nonvolatile storage medium of the LED box body in advance, each correction coefficient corresponds to one LED box body direction, after a display control instruction is received, one correction coefficient corresponding to the current direction of the LED box body is determined from multiple sets of correction coefficients according to the obtained current direction of the LED box body and serves as a target correction coefficient, display control information is generated according to the target correction coefficient and display data to control the LED box body to display, the correction effect of the LED box body achieves the expected correction effect, the display effect of the LED box body is improved, and the display effect of the LED screen body consisting of the LED box body is improved.
The terms and expressions used in the specification of the present invention have been set forth for illustrative purposes only and are not meant to be limiting. It will be appreciated by those skilled in the art that changes could be made to the details of the above-described embodiments without departing from the underlying principles thereof. The scope of the invention is, therefore, indicated by the appended claims, in which all terms are intended to be interpreted in their broadest reasonable sense unless otherwise indicated.
Claims (10)
1. A method of calibration, the method comprising:
receiving correction coefficients of the LED box body sent by an upper computer, wherein the correction coefficients are multiple, and each correction coefficient corresponds to one LED box body direction;
respectively storing a plurality of correction coefficients into non-easy-to-vector storage media of the LED box body according to a preset storage strategy;
receiving a display control instruction sent by an upper computer, wherein the display control instruction comprises a correction coefficient reading instruction and display data;
acquiring the current direction of the LED box body, and reading a correction coefficient corresponding to the current direction from the non-easy-to-vector storage medium as a target correction coefficient according to the correction coefficient reading instruction and the current direction;
and generating a display control signal according to the display data and the target correction coefficient, and sending the display control signal to an LED driving chip of the LED box body to control the LED box body to display a picture.
2. The correction method according to claim 1, wherein the storing the plurality of correction coefficients into the non-volatile storage medium of the LED box according to a preset storage strategy respectively comprises:
a plurality of storage areas are defined in the non-volatile storage medium, and each storage area corresponds to one direction of the LED box body;
and respectively storing each correction coefficient into a corresponding storage area according to the direction of the corresponding LED box body.
3. The calibration method according to claim 2, wherein the LED box comprises a plurality of LED modules and a receiving card connected to the LED modules, and the non-volatile storage medium is a storage chip in the receiving card or each LED module.
4. The calibration method according to claim 3, wherein if the non-volatile storage medium is a storage chip in each LED module, the calibrating method further comprises the steps of respectively storing a plurality of calibration coefficients into the non-volatile storage medium of the LED box according to a preset storage strategy:
and splitting each correction coefficient into a plurality of groups of sub-correction coefficients corresponding to the LED modules one by one according to a preset correction coefficient splitting strategy, and respectively storing the plurality of groups of sub-correction coefficients corresponding to each correction coefficient into the storage chips of the corresponding LED modules.
5. The correction method according to claim 1, wherein the obtaining a current direction of the LED box, and reading a correction coefficient corresponding to the current direction from the non-vector-prone storage medium as a target correction coefficient according to the correction coefficient reading instruction and the current direction, comprises:
acquiring the current direction of the LED box body, and determining one correction coefficient from the multiple correction coefficients stored in the non-easy-to-vector storage medium as a target correction coefficient according to the current direction and the LED box body direction corresponding to each correction coefficient;
and reading the correction coefficient corresponding to each LED module in the LED box body line by line from the target correction coefficient according to the size of the LED module in the LED box body.
6. The calibration method of claim 1, wherein the LED housing directions comprise at least 0 °, 90 °, 180 °, and 270 °.
7. A correction device is characterized by comprising a receiving module, a storage control module, a correction coefficient reading module and a display control signal generating module, wherein:
the receiving module is connected with the storage control module, the correction coefficient reading module and the display control signal generating module and is used for receiving correction coefficients of the LED box body sent by an upper computer and sending the correction coefficients to the storage control module, wherein the correction coefficients are in multiple parts, each part of the correction coefficients corresponds to one direction of the LED box body, the receiving module is also used for receiving a display control instruction sent by the upper computer and sending the display control instruction to the correction coefficient reading module and the display control signal generating module, and the display control instruction comprises a correction coefficient reading instruction and display data;
the storage control module is connected with the receiving module and respectively stores a plurality of correction coefficients into non-volatile storage media of the LED box body according to a preset storage strategy;
the correction coefficient reading module is connected with the receiving module and the display control signal generating module and used for acquiring the current direction of the LED box body, reading a correction coefficient corresponding to the current direction from the non-easy-to-vector storage medium as a target correction coefficient according to the correction coefficient reading instruction and the current direction, and sending the target correction coefficient to the display control signal generating module;
and the display control signal generation module is used for generating a display control signal according to the display data and the target correction coefficient and sending the display control signal to an LED driving chip of the LED box body so as to control the LED box body to display pictures.
8. The calibration apparatus according to claim 7, wherein the storage control module further comprises an area dividing unit and a storage unit connected to the area dividing unit, wherein:
the region dividing unit is used for dividing a plurality of storage regions in the non-volatile storage medium, and each storage region corresponds to one LED box body direction;
the storage unit is used for storing each correction coefficient into the corresponding storage area according to the corresponding direction of the LED box body.
9. An LED display screen, characterized in that, includes a plurality of LED boxes, every including a plurality of LED modules and the receiving card that is connected with a plurality of LED modules in the LED box, be provided with the correcting unit as claimed in claim 7 or 8 on the receiving card.
10. A computer device, characterized in that it comprises a memory in which a computer program is stored and a processor which, when executing said computer program, carries out the correction method steps according to any one of claims 1 to 6.
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| CN114638728B (en) * | 2022-03-25 | 2022-11-22 | 国网河北省电力有限公司 | Big data-based real-time operation monitoring method for power service center |
| CN115019724B (en) * | 2022-07-20 | 2024-08-09 | 卡莱特云科技股份有限公司 | Creative display adjustment method and device for correction coefficient and correction system |
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