CN113436572B - Correction method and device irrelevant to direction of LED box body and LED display screen - Google Patents
Correction method and device irrelevant to direction of LED box body and LED display screen Download PDFInfo
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- CN113436572B CN113436572B CN202110534210.9A CN202110534210A CN113436572B CN 113436572 B CN113436572 B CN 113436572B CN 202110534210 A CN202110534210 A CN 202110534210A CN 113436572 B CN113436572 B CN 113436572B
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- 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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Abstract
The invention relates to a correction method and a device irrelevant to the direction of an LED box body, wherein the method comprises the steps of receiving a correction coefficient and a routing table of the LED box body, storing the routing table and the correction coefficient into a nonvolatile storage medium of the LED box body, and sending the correction coefficient after an upper computer rearranges a plurality of correction coefficient values in the correction coefficient according to the routing table; receiving a display control instruction, and sending the routing table to an upper computer according to the display control instruction; receiving a reading sequence instruction, reading a correction coefficient according to the reading sequence in the reading sequence instruction, wherein the reading sequence is set by a user according to a route table and the position sequence of each LED lamp point in the LED box body at the current moment; and according to a preset correction processing strategy, sequentially using correction coefficients to correct the display data of the corresponding LED lamp points according to the reading sequence. The correction method and the correction device provided by the invention simplify the correction process and reduce the complexity of correction processing.
Description
Technical Field
The invention relates to the field of correction processing, in particular to a correction method and device irrelevant to the direction of an LED box body and an LED display screen.
Background
When the correction processes such as brightness correction or bright and dark line repair correction and the like need to be carried out on the LED display screen at present, it is necessary to store the correction coefficient in the receiving card or on a non-volatile storage medium such as flash on the smart module (LED module) in advance, each correction coefficient is composed of a plurality of correction coefficient values, each correction coefficient value corresponds to one LED lamp point (the brightness of each lamp point before leaving the factory may be inconsistent, or between the LED module and the LED module, bright and dark lines can be generated at the edge junction of the LED box body and the LED box body, a dark seam can be generated if the physical seam is too large, and a bright seam can be generated if the physical seam is smaller than the distance between the lamp points, so that the brightness uniformity of the LED box body or the LED screen body needs to be kept or the bright and dark lines need to be eliminated through the correction coefficients), and the storage mode of the correction coefficients and the direction of the LED box body are in a binding relationship.
In the LED display industry, particularly the LED display screen rental industry, when an LED box body is assembled to form an LED display screen, the LED box body rotates after being assembled (4 directions; 90 degrees, 180 degrees, 270 degrees and 360 degrees) often, and due to the fact that the storage mode and the direction of the LED box body are in a binding relationship, when the LED box body rotates excessively, a pre-stored correction coefficient forms an incorrect relationship with a lamp point on the LED box body, the correction coefficient generally needs to be sent again, and the method can cause the time cost of field maintenance to be increased and the processing complexity to be improved. Therefore, in view of the above problems, a need exists in the art to find a new solution to solve the above problems.
Disclosure of Invention
In order to solve the above problems, the present invention provides a calibration method independent of the direction of an LED box, including: receiving a correction coefficient and a routing table of the LED box body, and storing the routing table and the correction coefficient into a nonvolatile storage medium of the LED box body according to a preset storage format, wherein the correction coefficient is sent after an upper computer rearranges a plurality of correction coefficient values in the correction coefficient according to the routing table; receiving a display control instruction, and sending the routing table to an upper computer according to the display control instruction; and receiving a reading sequence instruction, reading the correction coefficients from the nonvolatile storage medium according to the reading sequence in the reading sequence instruction, setting the reading sequence for a user according to the route table and the position sequence of each LED lamp point in the LED box body at the current time, and sequentially using the correction coefficients to correct the display data of the corresponding LED lamp point according to the reading sequence according to a preset correction processing strategy.
Furthermore, the route table is a transmission sequence table for displaying data on the LED lamp points of the LED box body.
Further, according to a preset correction processing strategy, correction processing is performed on the display data of the corresponding LED lamp points by using the correction coefficients according to the reading sequence, and the correction processing method comprises the following steps: arranging the display data of each LED lamp point according to the routing table to obtain rearranged display data; determining the corresponding relation between the display data of each LED lamp point and each correction coefficient value according to the arrangement sequence of the display data of each LED lamp point in the rearranged display data and the arrangement sequence of each correction coefficient value in the correction coefficient; and according to the reading sequence, sequentially using one correction coefficient value in the correction coefficients to correct the display data of the corresponding LED lamp points until the correction of the display data of all the LED lamp points is completed.
Further, the preset storage format is a form in which a header data portion storing the routing table and a correction coefficient data portion storing the correction coefficient are combined.
Further, after reading the correction coefficients in the non-volatile storage medium according to the reading order, the method further comprises: and sequentially loading the read correction coefficients into a random dynamic memory of the receiving card, and correcting the display data by using the correction coefficients in the random dynamic memory.
Furthermore, the LED box body comprises a plurality of LED modules and a receiving card connected with the LED modules, and the nonvolatile storage medium is the receiving card or a storage chip in each LED module.
Further, if the nonvolatile storage medium is a storage chip in each LED module, the correction coefficients include a plurality of sub-correction coefficients corresponding to the LED modules one to one, and the plurality of sub-correction coefficients are obtained by splitting the correction coefficients according to a preset correction coefficient splitting strategy by the upper computer; storing the correction factor into a non-volatile storage medium of the LED box comprises: and respectively storing the multiple groups of sub-correction coefficients in the correction coefficients into the storage chips of the corresponding LED modules.
The invention also provides a correcting device irrelevant to the direction of the LED box body, which comprises a receiving module, a sending module and a correcting processing module, wherein: the receiving module is connected with the sending module and the correction processing module and used for receiving the correction coefficient and the wiring table of the LED box body and storing the wiring table and the correction coefficient into a nonvolatile storage medium of the LED box body according to a preset storage format, wherein the correction coefficient is sent after the upper computer rearranges a plurality of correction coefficient values in the correction coefficient according to the wiring table; the receiving module is also used for receiving the display control instruction and transmitting the display control instruction to the sending module and the correction processing module; the receiving module is also used for receiving the reading sequence instruction and transmitting the reading sequence instruction to the correction processing module; the sending module is used for sending the routing table to the upper computer according to the display control instruction; the correction processing module is used for reading correction coefficients from the nonvolatile storage medium according to a reading sequence in the reading sequence instruction after receiving the display control instruction and the reading sequence instruction, wherein the reading sequence is set by a user according to a route table and the position sequence of each LED lamp point in the LED box at the current time; and according to a preset correction processing strategy, sequentially using correction coefficients to correct the display data of the corresponding LED lamp points according to the reading sequence.
Further, the correction processing module includes a display data rearranging unit, a correction coefficient value-sub display data relationship determining unit, and a correcting unit, wherein: the display data rearrangement unit is connected with the correction coefficient value-sub display data relation determination unit and used for arranging the display data of each LED lamp point according to the route table to obtain rearranged display data; a correction coefficient value-sub display data relation determining unit connected with the correcting unit and used for determining the corresponding relation between the display data of each LED lamp point and each correction coefficient value according to the arrangement sequence of the display data of each LED lamp point in the rearranged display data and the arrangement sequence of each correction coefficient value in the correction coefficient; and the correction unit is used for correcting the display data of the corresponding LED lamp points by sequentially using one correction coefficient value in the correction coefficients according to the reading sequence until the correction of the display data of all the LED lamp points is completed.
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 correction method and device irrelevant to the direction of the LED box body and the LED display screen at least have the following beneficial effects: the receiving card stores the correction coefficients and the routing table into a nonvolatile storage medium of the LED box body, and each correction coefficient value in the stored correction coefficients is arranged according to the routing sequence of the LED lamp points corresponding to each correction coefficient value and is bound with the LED lamp points one by one.
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 flow chart of a calibration method independent of LED housing orientation in one embodiment of the present invention;
FIG. 2 is a flowchart illustrating a calibration process according to a predetermined calibration process strategy according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an LED case structure according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a calibration apparatus independent of the direction of the LED housing according to an embodiment of the present invention;
FIG. 5 is a block diagram of a calibration processing module according to an embodiment of the present invention;
the device comprises a 1-LED box body, a 101-LED module, a 102-receiving card, a 401-receiving module, a 402-sending module, a 403-correction processing module, a 4031-display data rearrangement unit, a 4032-correction coefficient value-sub-display data relation determination unit and a 4033-correction 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 independent of the direction of the LED box is disclosed, and specifically, the method is executed by a receiving card in the LED box. The method comprises the following steps:
step S101: and receiving the correction coefficient and the routing table of the LED box body, and storing the routing table and the correction coefficient into a nonvolatile storage medium of the LED box body according to a preset storage format.
In this embodiment, the correction coefficient received by the receiving card is a correction coefficient sent by the upper computer after rearranging a plurality of correction coefficient values in the correction coefficient according to the routing table of the LED box.
Specifically, at least one row decoding chip and one column driving chip are arranged in one LED box body, row and column cross points formed by the row decoding chip and the column driving chip are connected with LED lamp points, and the connection relation (namely the wiring relation) between each LED lamp point in the LED box body and the row and column cross points is set when the LED box body is manufactured. The routing table is a transmission sequence table (including the corresponding relation between the display data and the positions of the LED lamp points) for displaying data on the LED lamp points of the LED box body, and represents the routing sequence of each LED lamp point in the LED box body. The mentioned display data includes image picture data, and the receiving card controls the corresponding LED lamp to light up according to the display data, so that the image picture to be displayed can be displayed on the LED box.
The routing mode of the routing table can be a row scanning mode or a column scanning mode. In order to make the skilled person more clear the line scanning method mentioned in the present invention, the following is exemplified: assuming that the position sequence of the LED lamp points in the LED box body is a first row: l1, L2, L3, L4, L5, second lines L6, L7, L8, L9, L10, third lines L11, L12, L13, L14, L15, the line scanning mode is that according to the line sequence, first lines L1, L2, L3, L4, L5 are scanned, then lines L6, L7, L8, L9, L10 are scanned, and finally lines L11, L12, L13, L14, L15 are scanned; similarly, the column scanning method is to scan the first column L1, L6, and L11, and then scan the second column and the third column in turn. It should be noted that the foregoing is illustrative only and is not limiting of the invention.
The upper computer means a computer capable of directly sending out control commands, and the correction coefficient can be calculated by a correction system in advance according to the characteristics of the lamp points. Specifically, the correction coefficient may be a luminance correction coefficient, a seam correction coefficient, or a chrominance correction coefficient. Taking the brightness correction coefficient as an example, the brightness correction coefficient is calculated by calculating the average brightness value of each lamp point and determining the brightness correction coefficient value to be adjusted to the average brightness value according to the average brightness value. After the correction coefficient is calculated by the correction system, the calculated correction coefficient is sent to a receiving card of the LED box body through the upper computer to be stored, and then when the LED box body is used for displaying a picture, the display data of each LED lamp point in the LED box body can be corrected according to the pre-stored correction coefficient, so that the display effect is improved. It should be understood that a plurality of correction coefficient values in the correction coefficients calculated by the correction system are arranged in a matrix form according to the position sequence of the corresponding LED lamp points in the LED box body during calculation.
In this embodiment, since each correction coefficient value has an LED light point corresponding to it, the correction coefficient values are rearranged according to the routing table, that is, the arrangement order of the correction coefficient values is arranged according to the routing order of the LED light points corresponding to each correction coefficient value, that is, the arrangement order of the correction coefficient values in the correction coefficients received by the receiving card is consistent with the routing order of the LED light points in the routing table. Specifically, the correction coefficients calculated by the correction system may be straightened, and the correction coefficient values in the correction coefficients are read one by one according to the routing sequence of the LED lamp points corresponding to the correction coefficient values in the routing table, and the correction coefficient values corresponding to the LED lamp points are arranged according to the routing sequence (the sequence of routing the LED lamp points).
Further, the preset storage format is a form in which a header data portion storing the routing table and a correction coefficient data portion storing the correction coefficient are combined.
Further, when the correction coefficient is stored in the nonvolatile storage medium of the LED box, a plurality of correction coefficient values in the correction coefficient are stored in the nonvolatile storage medium in batches in the order of the number of sweeps of the LED box. Specifically, when the LED box is scanned, scanning is generally performed in a line scanning order, each scan corresponds to a line of LED lamp points or a column of LED lamp points, so that the corresponding number of correction coefficient values can be stored in batch to the non-volatile storage medium of the LED box in the order of the 1 st scan and the 2 nd scan.
Step S102: and receiving a display control instruction, and sending the routing table to the upper computer according to the display control instruction.
Specifically, the display control instruction is sent by a user control upper computer, and the upper computer controls the receiving card to carry out correction operation through the display control instruction. Wherein the first step of the correction operation is: and the receiving card sends the routing table to the upper computer according to the display control instruction, namely the upper computer reads back the routing table stored in the nonvolatile storage medium. Furthermore, after the upper computer reads back the wiring meter stored in the nonvolatile storage medium, the wiring meter can be displayed on a display interface of the upper computer, so that a user can directly view the wiring meter of the LED box body through the upper computer, a reading sequence of the correction coefficients is set in the upper computer, a reading sequence instruction containing the reading sequence is sent through the upper computer, and the receiving card is controlled to carry out the next correction operation.
More specifically, the display control command includes the above-mentioned display data in addition to the control signal for controlling the receiving card to start the correction operation.
Step S103: and receiving a reading sequence instruction, and reading the correction coefficient from the nonvolatile storage medium according to the reading sequence in the reading sequence instruction.
Specifically, in this embodiment, the reading sequence instruction is sent by the user controlling the upper computer, and the reading sequence in the reading sequence instruction is set by the user according to the route table of the LED box and the position sequence of each LED lamp point in the LED box at the current time. When the receiving card receives the reading sequence command, the dotting is performed again according to the reading sequence (equivalent to a new route table) in the reading sequence command. That is, after receiving the reading sequence instruction, the dotting sequence is performed according to the new routing table. And after the receiving card performs dotting again, sequentially reading the correction coefficients according to the reading sequence.
More specifically, the current time refers to a time at which the user sets a reading order on the host computer. Setting a reading sequence according to the routing list and the position sequence of each LED lamp point in the LED box body at the current time, wherein if the routing sequence of the LED lamp points in the routing list is inconsistent with the position sequence of each LED lamp point in the LED box body at the current time, the reading sequence set by a user in the upper computer is as follows: reading the correction coefficients corresponding to the LED lamp points in sequence according to the position sequence of the LED lamp points, wherein if the wiring sequence of the LED lamp points in the wiring table is consistent with the position sequence of the LED lamp points in the LED box body at the current moment, the reading sequence set in the upper computer by a user is as follows: and reading the correction coefficients according to the wiring sequence of the LED lamp points, namely according to the arrangement sequence of the correction coefficient values stored in the current LED box body.
Further, in this embodiment, after reading the correction coefficients according to the reading order, the correction method further includes sequentially loading the read correction coefficients into a random dynamic memory of the receiving card, so as to perform correction processing on the display data using the correction coefficients in the random dynamic memory. The random access memory may be a synchronous dynamic random-access memory (SDRAM), a DDR2 memory (Double Data Rate 2), a DDR3 memory, or a DDR4 memory, which is not limited in the present invention.
Step S104: and according to a preset correction processing strategy, sequentially using correction coefficients to correct the display data of the corresponding LED lamp points according to the reading sequence.
Specifically, each LED lamp point has corresponding display data, and each correction coefficient value in the correction coefficients is in one-to-one correspondence with the LED lamp point, so that the display data of the corresponding LED lamp point can be corrected by sequentially using the correction coefficient values in the correction coefficients according to the reading sequence.
In this embodiment, because the correction coefficient values of the correction coefficients stored in the LED box are arranged according to the routing sequence of the LED light points in the routing table, and the stored correction coefficient values are bound to the LED light points one by one, when the LED box is assembled to form the LED display screen, even if the direction of the LED box is rotated (compared with the case direction when the correction coefficient is calculated by the correction system), the corresponding relationship between the stored correction coefficient and each LED light point is still unchanged, so that during the correction, the host computer does not need to resend the correction coefficient, the receiving card is controlled to read the correction coefficient values according to the reading sequence by directly setting the reading sequence according to the position sequence of the LED light points and the routing table during the correction, and the display data corresponding to the correction coefficient values is corrected, thereby simplifying the correction process and reducing the processing complexity, the field maintenance time is greatly shortened.
In another embodiment of the present invention, as shown in fig. 2, the method for performing correction processing on the display data of the corresponding LED lamp points by using the correction coefficients according to the preset correction processing strategy and in the reading order includes the following steps:
step S1041: and rearranging the display data of each LED lamp point according to the routing table to obtain rearranged display data.
Specifically, each LED lamp has display data corresponding to the LED lamp, and the display data of each LED lamp is rearranged according to the routing table, that is, the arrangement order of the display data corresponding to each LED lamp is adjusted according to the routing order of the LED lamps in the routing table, so that the arrangement order of the display data of each LED lamp is consistent with the routing order of the LED lamps corresponding to the display data.
Step S1042: and determining the corresponding relation between the display data of each LED lamp point and each correction coefficient value according to the arrangement sequence of the display data of each LED lamp point in the rearranged display data and the arrangement sequence of each correction coefficient value in the correction coefficient.
Because the arrangement sequence of each correction coefficient value in the correction coefficients is consistent with the routing sequence of the LED lamp points corresponding to each correction coefficient value, the display data of each LED lamp point in the rearranged display data is in one-to-one correspondence with each correction coefficient value in the correction coefficients according to the arrangement sequence, so that the corresponding relation between the display data of each LED lamp point and each correction coefficient value can be determined according to the arrangement sequence of the display data of each LED lamp point in the rearranged display data and the arrangement sequence of each correction coefficient value in the correction coefficients.
Step S1043: and according to the reading sequence, sequentially using one correction coefficient value in the correction coefficients to correct the display data of the LED lamp points corresponding to the correction coefficient value until the correction of the display data of all the LED lamp points is completed.
In order to make the correction method provided by the present invention better understood by those skilled in the art, the following examples are given:
when the correction system calculates the correction coefficients, the positional order of the LED light points is L1, L2, L3, L4, and L5 from left to right, the correction coefficient value of L1 is calculated to be 0.1, the correction coefficient value of L2 is calculated to be 0.2, the correction coefficient value of L3 is calculated to be 0.3, the correction coefficient value of L4 is calculated to be 0.4, and the correction coefficient value of L5 is calculated to be 0.5, and the correction coefficients calculated by the correction system are arranged in the order of 0.1, 0.2, 0.3, 0.4, and 0.5 from left to right. If the routing sequence of the LED light points in the routing table is L5, L4, L3, L2, and L1 (dot sequence), the upper level will arrange the correction coefficients from left to right according to the routing sequence: after 0.5, 0.4, 0.3, 0.2 and 0.1, the upper computer sends the arranged correction coefficient and the routing table to the receiving card, and the receiving card stores the correction coefficient and the routing table into a nonvolatile storage medium in a storage format of combining header data with the correction coefficient. Further, the routing sequence of the LED light points in the routing table may be L5, L4, L3, L2, and L1, which are used as the position sequence of each LED light point when the LED box is in the positive direction, that is, when the position sequence of each LED light point in the LED box is L5, L4, L3, L2, and L1 from left to right, the direction of the LED box is in the positive direction.
After receiving the display control instruction of host computer, the receiving card sends the head data to the host computer, show the table of walking in the head data by the host computer, the user can be according to the table of walking and the current time position order of each LED lamp point in the LED box sets for the reading order of correction coefficient, if walk the line order in the table of walking and the position order of LED lamp point inconsistent (the position order of each LED lamp point in the LED box is L1 from left to right in proper order under the current time, L2, L3, L4, L5, also the direction of current LED box is compared in the positive direction and has rotated 180 degrees), then the user is according to the position order of each LED lamp point in the LED box under the current time: l1, L2, L3, L4 and L5 set the reading order of the correction coefficients to be from right to left, that is, 0.1, 0.2, 0.3, 0.4 and 0.5, and when performing the correction, the corresponding display data are corrected in order according to the reading order. And after the correction is finished, generating a driving signal according to the corrected display data to drive each LED lamp point in the LED box body to display.
In another embodiment of the present invention, as shown in fig. 3, the LED box 1 includes a plurality of LED modules 101 and a receiving card 102 connected to the plurality of LED modules 101, and the non-volatile storage medium is the receiving card 102 or a memory chip in each LED module 101. The specific memory chip may be an SPI flash or other memory chips, which is not limited in the present invention, and an SPI (serial peripheral interface) flash, that is, a flash memory device that operates through a serial interface.
Further, in another embodiment of the present invention, if the nonvolatile storage medium is a storage chip in each LED module, the correction coefficients include a plurality of sub-correction coefficients corresponding to the LED modules one to one, and the sub-correction coefficients are obtained by splitting the correction coefficients according to a preset correction coefficient splitting policy by the upper computer; storing the correction factor into a non-volatile storage medium of the LED box comprises: and respectively storing the multiple groups of sub-correction coefficients in the correction coefficients into the storage chips of the corresponding LED modules.
Specifically, the LED box body is composed of a plurality of LED modules, each LED module further includes a plurality of LED light points, so if the correction coefficient is stored in the memory chip of the LED module, the correction coefficient needs to be split according to the LED module, the correction coefficient value corresponding to the LED light point on each LED module is used as a group of sub-correction coefficients, and the sub-correction coefficients are stored in the LED module corresponding to the sub-correction coefficients.
In an embodiment of the present invention, as shown in fig. 4, there is further provided a correction device independent of the direction of the LED box, the device includes a receiving module 401, a sending module 402, and a correction processing module 403, wherein:
the receiving module 401 is connected to the sending module 402 and the correction processing module 403, and is configured to receive a correction coefficient and a routing table of the LED box, and store the routing table and the correction coefficient into a nonvolatile storage medium of the LED box according to a preset storage format, where the correction coefficient is a correction coefficient sent by an upper computer after rearranging a plurality of correction coefficient values in the correction coefficient according to the routing table;
the receiving module 401 is further configured to receive a display control instruction and transmit the display control instruction to the sending module 402 and the correction processing module 403;
the receiving module 401 is further configured to receive a reading sequence instruction, and transmit the reading sequence instruction to the correction processing module 403;
a sending module 402, configured to send the routing table to the upper computer according to the display control instruction;
and the correction processing module 403 is configured to, after receiving the display control instruction and the reading sequence instruction, read the correction coefficients from the nonvolatile storage medium according to the reading sequence in the reading sequence instruction, where the reading sequence is set by the user according to the route table and the position sequence of each LED light point in the LED box at the current time, and perform correction processing on the display data corresponding to the LED light point according to the reading sequence and by using the correction coefficients in sequence according to a preset correction processing policy.
In the correcting device irrelevant to the direction of the LED box body in the embodiment, after a receiving module receives a routing table and a correction coefficient of the LED box body, the routing table and the correction coefficient are stored in a nonvolatile storage medium of the LED box body together, after the receiving module receives a display control instruction, a sending module sends the routing table to an upper computer for display, a user can set a reading sequence of the correction coefficient according to the routing table displayed in the upper computer and the position sequence of each LED lamp point of the LED box body, and then a correction processing module sequentially uses the correction coefficient value to correct corresponding display data according to the reading sequence of the correction coefficient, because the arrangement sequence of each correction coefficient value in the correction coefficient received by the receiving module is consistent with the routing sequence of the LED lamp point in the routing table, each correction coefficient value is bound with the LED lamp point, even if the direction is changed when the LED box body is assembled, the corresponding relation between each correction coefficient value and the LED lamp point is also unchanged, so that the upper computer does not need to send the correction coefficient again when the correction is carried out, the correction processing module directly utilizes the correction coefficient stored in the receiving card and sequentially processes the display data corresponding to each correction coefficient value according to the reading sequence, the correction process is simplified, the processing complexity is reduced, and the field maintenance time is greatly shortened.
In still another embodiment of the present invention, as shown in fig. 5, the correction processing module 403 includes a display data rearranging unit 4031, a correction coefficient value-sub display data relationship determining unit 4032, and a correcting unit 4033, wherein:
a display data rearrangement unit 4031 connected to the correction coefficient value-sub display data relationship determination unit 4032 and configured to rearrange the display data of each LED light spot according to the routing table to obtain rearranged display data;
a correction coefficient value-sub display data relation determining unit 4032 connected to the correcting unit 4033, and configured to determine a corresponding relation between the display data of each LED lamp and each correction coefficient value according to the arrangement order of the display data of each LED lamp in the rearranged display data and the arrangement order of each correction coefficient value in the correction coefficients;
a correcting unit 4033, configured to sequentially use one correction coefficient value of the correction coefficients according to the reading order to correct the display data of the corresponding LED lamp until the correction of the display data of all the LED lamp is completed.
In another embodiment of the present invention, the present invention further provides an LED display screen, which includes a plurality of LED boxes, each LED box includes a plurality of LED modules and a receiving card connected to the plurality of LED modules, and the receiving card is provided with the above-mentioned calibration device.
According to the correction method, the correction device and the LED display screen which are irrelevant to the direction of the LED box body, in the correction process, the correction coefficient and the direction of the LED box body do not have a binding relation, and the correction coefficient values in the correction coefficient are arranged according to the wiring sequence of the wiring table, so that the correction coefficient and the LED lamp points are in one-to-one binding correspondence.
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 correction method independent of LED box direction is characterized in that the method comprises the following steps:
receiving a correction coefficient and a routing table of an LED box body, and storing the routing table and the correction coefficient into a nonvolatile storage medium of the LED box body according to a preset storage format, wherein the correction coefficient is sent after an upper computer rearranges a plurality of correction coefficient values in the correction coefficient according to the routing table;
receiving a display control instruction, and sending the routing table to the upper computer according to the display control instruction;
receiving a reading sequence instruction, and reading the correction coefficient from the nonvolatile storage medium according to a reading sequence in the reading sequence instruction, wherein the reading sequence is set by a user according to the route table and the position sequence of each LED lamp point in the LED box at the current moment;
and according to a preset correction processing strategy, sequentially using the correction coefficients to correct the display data of the corresponding LED lamp points according to the reading sequence.
2. The LED box direction-independent correction method according to claim 1, wherein the routing table is a transmission sequence table of the display data on the LED lamp points of the LED box.
3. The correction method independent of the direction of the LED box body as claimed in claim 2, wherein the correction processing of the display data of the corresponding LED lamp points by using the correction coefficients according to the preset correction processing strategy and the reading sequence comprises the following steps:
arranging the display data of each LED lamp point according to the routing table to obtain rearranged display data;
determining the corresponding relation between the display data of each LED lamp point and each correction coefficient value according to the arrangement sequence of the display data of each LED lamp point in the rearranged display data and the arrangement sequence of each correction coefficient value in the correction coefficient;
and according to the reading sequence, sequentially using one correction coefficient value in the correction coefficients to correct the display data of the corresponding LED lamp points until the correction of the display data of all the LED lamp points is completed.
4. The LED box direction-independent correction method according to claim 1, wherein the preset storage format is in the form of a header data part storing a routing table in combination with a correction coefficient data part storing the correction coefficient.
5. The calibration method of claim 1, wherein the LED box comprises a plurality of LED modules and a receiving card connected to the LED modules, and after the calibration coefficients are read from the non-volatile storage medium according to the reading sequence, the method further comprises:
and sequentially loading the read correction coefficients into a random dynamic memory of the receiving card, and correcting the display data in the random dynamic memory by using the correction coefficients.
6. The LED box direction-independent correction method according to claim 1, wherein the LED box comprises a plurality of LED modules and a receiving card connected with the LED modules, and the non-volatile storage medium is a storage chip in the receiving card or each LED module.
7. The correction method irrelevant to the direction of the LED box body as claimed in claim 6, wherein if the nonvolatile storage medium is a storage chip in each LED module, the correction coefficients comprise a plurality of groups of sub-correction coefficients in one-to-one correspondence with the LED modules, and the plurality of groups of sub-correction coefficients are obtained by splitting the correction coefficients by the upper computer according to a preset correction coefficient splitting strategy;
storing the correction coefficient to a non-volatile storage medium of the LED box comprises: and respectively storing the plurality of groups of sub-correction coefficients in the correction coefficients into the storage chips of the corresponding LED modules.
8. The utility model provides a correcting unit irrelevant with LED box direction which characterized in that, the device includes receiving module, sending module, correction processing module, wherein:
the receiving module is connected with the sending module and the correction processing module, and is used for receiving a correction coefficient and a routing table of the LED box body, and storing the routing table and the correction coefficient into a nonvolatile storage medium of the LED box body according to a preset storage format, wherein the correction coefficient is sent by an upper computer after rearranging a plurality of correction coefficient values in the correction coefficient according to the routing table;
the receiving module is also used for receiving a display control instruction and transmitting the display control instruction to the sending module and the correction processing module;
the receiving module is also used for receiving a reading sequence instruction and transmitting the reading sequence instruction to the correction processing module;
the sending module is used for sending the routing table to the upper computer according to the display control instruction;
the correction processing module is used for reading the correction coefficients from the nonvolatile storage medium according to a reading sequence in the reading sequence instruction after receiving the display control instruction and the reading sequence instruction, wherein the reading sequence is set by a user according to the route table and the position sequence of each LED lamp point in the LED box at the current time; and according to a preset correction processing strategy, sequentially using the correction coefficients to correct the display data of the corresponding LED lamp points according to the reading sequence.
9. The LED box direction-independent correction device according to claim 8, wherein the correction processing module comprises a display data rearrangement unit, a correction coefficient value-sub display data relation determination unit and a correction unit, wherein:
the display data rearrangement unit is connected with the correction coefficient value-sub display data relation determination unit and used for arranging the display data of each LED lamp point according to the route table to obtain rearranged display data;
the correction coefficient value-sub-display data relation determining unit is connected with the correction unit and used for determining the corresponding relation between the display data of each LED lamp point and each correction coefficient value according to the arrangement sequence of the display data of each LED lamp point in the rearranged display data and the arrangement sequence of each correction coefficient value in the correction coefficient;
and the correction unit is used for correcting the display data of the corresponding LED lamp points by sequentially using one correction coefficient value in the correction coefficients according to the reading sequence until the correction of the display data of all the LED lamp points is completed.
10. 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 8 or 9 on the receiving card.
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| CN114241964B (en) * | 2021-12-29 | 2023-06-30 | 卡莱特云科技股份有限公司 | Simulation lighting method, device and system for special-shaped LED display screen |
| CN114783366B (en) * | 2022-04-29 | 2023-11-28 | 卡莱特云科技股份有限公司 | Display method and device based on special-shaped module and LED display screen |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5838396A (en) * | 1994-12-14 | 1998-11-17 | Matsushita Electric Industrial Co., Ltd. | Projection type image display apparatus with circuit for correcting luminance nonuniformity |
| CN101183510A (en) * | 2007-12-21 | 2008-05-21 | 深圳市奥拓电子有限公司 | LED color display control method and system |
| CN101877207A (en) * | 2009-11-18 | 2010-11-03 | 北京巨数数字技术开发有限公司 | LED display screen system and control method |
| CN104064147A (en) * | 2014-06-25 | 2014-09-24 | 西安诺瓦电子科技有限公司 | LED display screen brightness and chrominance correction method and LED box brightness and chrominance correction method |
| CN104485059A (en) * | 2014-12-31 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Routing testing method and image-text system |
| CN104485068A (en) * | 2014-12-02 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Luminance-chrominance correction method and system of LED (Light Emitting Diode) display screen |
| CN111899686A (en) * | 2020-07-31 | 2020-11-06 | 卡莱特（深圳）云科技有限公司 | LED box body order marking method and system and electronic equipment |
| CN112601031A (en) * | 2020-11-26 | 2021-04-02 | 西安诺瓦星云科技股份有限公司 | Method and device for uploading correction coefficient of LED pixel, storage medium and processor |
-
2021
- 2021-05-17 CN CN202110534210.9A patent/CN113436572B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5838396A (en) * | 1994-12-14 | 1998-11-17 | Matsushita Electric Industrial Co., Ltd. | Projection type image display apparatus with circuit for correcting luminance nonuniformity |
| CN101183510A (en) * | 2007-12-21 | 2008-05-21 | 深圳市奥拓电子有限公司 | LED color display control method and system |
| CN101877207A (en) * | 2009-11-18 | 2010-11-03 | 北京巨数数字技术开发有限公司 | LED display screen system and control method |
| CN104064147A (en) * | 2014-06-25 | 2014-09-24 | 西安诺瓦电子科技有限公司 | LED display screen brightness and chrominance correction method and LED box brightness and chrominance correction method |
| CN104485068A (en) * | 2014-12-02 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Luminance-chrominance correction method and system of LED (Light Emitting Diode) display screen |
| CN104485059A (en) * | 2014-12-31 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Routing testing method and image-text system |
| CN111899686A (en) * | 2020-07-31 | 2020-11-06 | 卡莱特（深圳）云科技有限公司 | LED box body order marking method and system and electronic equipment |
| CN112601031A (en) * | 2020-11-26 | 2021-04-02 | 西安诺瓦星云科技股份有限公司 | Method and device for uploading correction coefficient of LED pixel, storage medium and processor |
Non-Patent Citations (1)
| Title |
|---|
| 具有模组识别及数据存储功能的智能模组控制***;王占明等;《电子科学技术》;20141110(第03期);第410-414页 * |
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