CN112162880B - Method and device for acquiring module correction coefficient applied to LED screen - Google Patents
Method and device for acquiring module correction coefficient applied to LED screen Download PDFInfo
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1068—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices in sector programmable memories, e.g. flash disk
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1048—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using arrangements adapted for a specific error detection or correction feature
- G06F11/1056—Updating check bits on partial write, i.e. read/modify/write
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1438—Restarting or rejuvenating
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1441—Resetting or repowering
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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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Abstract
The invention discloses a method and a device for acquiring module correction coefficients applied to an LED screen, wherein the method comprises the following steps: encoding the module to be used, respectively associating the encoding with the correction coefficients corresponding to each module, and storing the encoding into the storage chip corresponding to the module; performing a first power-on operation on the module, reading the module codes corresponding to the current display positions, and storing the codes and the correction coefficients corresponding to the modules into the receiving cards corresponding to the modules according to the relation of the display positions; performing a second power-on operation on the module, enabling the receiving card to send a detection frame to the storage chip according to a preset time interval, and enabling the storage chip to return a feedback frame aiming at the detection frame; and reading the module codes corresponding to the current display positions, and judging whether the codes are consistent with the previous codes or not so as to determine the target correction coefficients to be used. According to the method and the device, whether the module is detached and replaced or not is determined by reading the codes with smaller data content, so that the screen body is ensured not to influence the correction result when working normally, and the correction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of LED screen playing, in particular to a method for acquiring module correction coefficients applied to an LED screen.
Background
At present, with the development of technology, a combined LED screen is widely applied to various occasions, but before a program is actually played through a lED screen, the LED screen needs to be corrected through a correction coefficient.
The correction is implemented by storing correction coefficients of all modules in FLASH in a receiving card corresponding to a single screen body assembled by a plurality of modules, and when one module is disassembled and replaced due to other problems such as hardware damage, the correction coefficients stored in the FLASH in the receiving card cannot be changed, so that the problem that the correction coefficients stored in the FLASH in the receiving card are not matched with the replaced new module is possibly caused, and the problem of inaccurate correction is possibly caused in the correction process. In addition, at present, whether the module is dismounted and replaced can only be judged by manual work under the uncharged condition, and for the condition of the dismounting and replacing of the module, the replaced correction coefficient can only be obtained by manual operation and the correction coefficient of the receiving card FLASH can be updated, so that the problem of low correction efficiency can occur.
Disclosure of Invention
The invention provides a method for acquiring a module correction coefficient applied to an LED screen, which can overcome the defects and automatically acquire the correction coefficient of a new module after disassembly and replacement.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a method for acquiring module correction coefficients applied to an LED screen comprises the following steps:
step S1: encoding each module to be used, respectively associating the encoding with the correction coefficient corresponding to each module, and storing the encoding into a storage chip corresponding to the module;
step S2: when the module is powered on for the first time, reading codes of the modules corresponding to the current display positions, and storing the codes and correction coefficients corresponding to the modules into receiving cards corresponding to all the modules according to the relation of the display positions;
step S3: performing a second power-on operation on the module, enabling the receiving card to send a detection frame to a memory chip in the module according to a preset time interval, and enabling the memory chip to return a feedback frame for the detection frame;
step S4: reading codes of modules corresponding to the current display positions, and judging whether the codes are consistent with the codes in the step S2; if the two types of the data are consistent, executing the step S5, and if the two types of the data are inconsistent, executing the step S6;
step S5: taking the correction coefficient corresponding to the module in the step S2 as a target correction coefficient for correcting the module;
step S6: judging whether the inconsistent modules only change in display positions, if not, taking the correction coefficient corresponding to the module in the step S1 as a target correction coefficient for correcting the module; if the display position is changed, the correction coefficient corresponding to the display position in the step S2 is used as a target correction coefficient for correcting the module.
Preferably, in step S1, when each module to be used is encoded, the encoding is performed according to a preset encoding table, and the encoding of each module is a unique encoding. In addition, the preset encoding table is encoded in a binary form.
Preferably, in step S2, the codes are stored in the record tables of the receiving cards corresponding to all the modules according to the relation of the display positions, the correction coefficients stored in the memory chip are directly obtained according to the codes, and the correction coefficients are stored in the record tables of the receiving cards corresponding to all the modules according to the relation of the correction coefficients and the codes; and the record list stores the codes and correction coefficients corresponding to each module according to the display position of the module in the screen body in an associated mode.
Preferably, in step S6, if it is determined that the display position is not changed, the correction coefficient of the memory chip corresponding to the module in step S1 is read, the correction coefficient is used as a target correction coefficient for correction of the module, and the code and the correction coefficient of the module are stored in the record table in an associated manner; if the display position is judged to be changed, the correction coefficient corresponding to the display position in the record table is used as a target correction coefficient for correcting the module.
Preferably, in step S3, the receiving card sends a detection frame to a memory chip in the module according to a preset time interval, and in the first time interval, the memory chip returns a feedback frame to the detection frame, and step S5 is executed.
In addition, if the receiving card sends a detection frame to the memory chip in the module according to the preset time interval, the memory chip returns a feedback frame to the detection frame in the second time interval, and step S4 is executed.
Preferably, in step S3: and the receiving card sends detection frames to the memory chips in the modules according to preset time intervals, and if the detection frames returned by the memory chips are not received continuously for preset times, the positions of the modules which cannot be detected are marked.
The receiving card sends a detection frame to a storage chip in the module according to a preset time interval, and reads the currently detected code of the new module when a new module is detected at the marked module position, and judges whether the code is consistent with the unique code recorded at each display position in the record table;
if the two values are consistent, executing a step S5;
if not, step S6 is performed.
Preferably, the memory chip is replaced with a transmitting card corresponding to the module.
The invention also provides a device for acquiring the module correction coefficient applied to the LED screen, which comprises a processor and a memory, wherein a computer program capable of running on the processor is stored in the memory, and the computer program is executed by the processor to realize the method for acquiring the module correction coefficient applied to the LED screen.
After the technical scheme is implemented, the codes of the modules, the corresponding correction coefficients and the corresponding display positions are associated, and whether the modules are detached and replaced or not is determined by reading the codes with smaller data content; and in the restarting and powering on reading mode and the live working reading mode, adopt different modes to confirm the dismantlement replacement of module to acquire the correction factor of the new module after dismantling the replacement voluntarily, when confirming that the screen body work is normal, do not lead to the fact the influence to the correction result, and then improve correction efficiency.
Drawings
Fig. 1 is a flowchart of a first embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the present invention further provides a method for obtaining a module correction coefficient applied to an LED screen, including:
step S1: encoding each module to be used, respectively associating the encoding with the correction coefficient corresponding to each module, and storing the encoding into FLASH of the memory chip corresponding to the module;
in specific implementation, when each module to be used is coded, the codes are coded according to a preset coding table, and the codes of each module are unique codes. In addition, the preset encoding table is encoded in a binary form.
In the step, the module codes are in one-to-one correspondence with the correction coefficients, and the space is not occupied because the coded data content is smaller. Is more convenient to implement. And the unique coding mode is adopted, so that the operation is more single.
The operating mode at restart power up is as follows:
step S2: when the module is powered on for the first time, reading codes of the modules corresponding to the current display positions, and storing correction coefficients corresponding to the modules into FLASH of receiving cards corresponding to all the modules according to the relation of the display positions;
in the specific implementation, codes are stored in the record list of the receiving card corresponding to the module according to the relation of the display positions, correction coefficients stored in the memory chip are directly obtained according to the codes, and the correction coefficients are stored in the record list of the receiving card corresponding to all the modules according to the relation between the correction coefficients and the codes; the record list can store the codes and correction coefficients corresponding to each module according to the display position of the module in the screen body in an associated mode. In this step, the codes, correction coefficients and display positions of the modules are associated one by one and stored in the record list of the corresponding receiving card. It should be noted that, in general, the plurality of modules in the present embodiment correspond to only one receiving card, where the plurality of modules are combined into one box, and one box corresponds to one receiving card.
The correction coefficient and the display position of the module can be inquired through the codes, or the codes and the correction coefficient of the module can be known through the display position, so that the method is very simple and convenient.
Step S3: performing a second power-on operation on the module, enabling the receiving card to send a detection frame to a memory chip in the module according to a preset time interval, and enabling the memory chip to return a feedback frame for the detection frame;
in practice, the preset time interval may be 6S, and if,
(1) And the receiving card sends a detection frame to a memory chip in the module according to a preset time interval 6S, and the memory chip returns a feedback frame to the detection frame in the first time interval, so that the module is proved to be not detached and replaced, and at the moment, the step S5 can be executed.
(2) If the receiving card sends the detection frame to the memory chip in the module according to the preset time interval, the memory chip returns the feedback frame to the detection frame in the second time interval, and the second time interval is larger than the first time interval, the module is proved to be disassembled, namely the module is reassembled, and at the moment, the step S4 can be executed.
Step S4: reading codes of modules corresponding to the current display positions, and judging whether the codes are consistent with the codes in the step S2; if the two types of the data are consistent, executing the step S5, and if the two types of the data are inconsistent, executing the step S6;
in the step S2, the codes, correction coefficients and display positions of the modules are associated in a one-to-one correspondence manner in a record table of the corresponding receiving card; thus, by reading the code corresponding to the current presentation position, it is compared with the code in the record table:
if the correction coefficients are consistent, the step S5 is considered to be executable, namely, the correction coefficient corresponding to the module in the step S2 is used as a target correction coefficient for correcting the module; namely, taking a correction coefficient in FLASH of a memory chip corresponding to the module as a target correction coefficient;
if not, step S6 can be executed, namely, whether the inconsistent modules are only due to the variation of the display positions or not is further judged; if the display position is not changed, the correction coefficient corresponding to the module in the step S1 is used as a target correction coefficient for correcting the module; namely, taking a correction coefficient in FLASH of a memory chip corresponding to the module as a target correction coefficient; if the display position is changed, the correction coefficient corresponding to the display position in the record table in step S2 is used as the target correction coefficient for the module correction.
In the scheme, when the method is implemented, the codes of the modules are associated with the corresponding correction coefficients and the corresponding display positions, and whether the modules are detached and replaced or not is determined by reading the codes with smaller data content; and in the restarting and powering on reading mode and the live working reading mode, adopt different modes to confirm the dismantlement replacement of module to acquire the correction factor of the new module after dismantling the replacement voluntarily, when confirming that the screen body work is normal, do not lead to the fact the influence to the correction result, and then improve correction efficiency.
Compared with the method that correction coefficients of all modules are directly stored in a memory chip, the method and the device avoid the problem that the correction coefficients of the memory chip need to be read back to a receiving card every time, so that the performance of the memory chip is affected; on one hand, the content of the code is smaller, and the code does not occupy too much storage space; on the other hand, through storing the code, correction coefficient and the display position of each module in the receiving card, the influence on the performance of the memory chip is avoided, the correction coefficient of the replaced module can be automatically obtained, and the efficiency is higher.
The read mode when the electrification is working normally is as follows:
when the screen body works normally, the receiving card is enabled to send detection frames to the storage chips in the modules according to preset time intervals (such as intervals of 6 seconds), and if the detection frames cannot be detected continuously for preset times, namely the detection frames returned by the storage chips are not received, the positions of the modules which cannot be detected are marked. Subsequently, the receiving card continuously sends detection frames to the memory chips in the modules according to preset time intervals, if a new module is detected at the marked module position, the codes of the new module detected currently are read, and whether the codes are consistent with the unique codes recorded at each display position in the record table is judged; in practice, the number of consecutive presets may be set to 3 or more.
If the correction coefficients are consistent, executing a step S5, namely taking the correction coefficient corresponding to the module in the step S2 as a target correction coefficient for correcting the module; namely, taking a correction coefficient in FLASH of a memory chip corresponding to the module as a target correction coefficient;
if not, executing step S6, namely further judging whether the inconsistent modules are only due to the variation of the display positions; if the display position is not changed, the correction coefficient corresponding to the module in the step S1 is used as a target correction coefficient for correcting the module; taking a correction coefficient in FLASH of a memory chip corresponding to the module as a target correction coefficient, and storing the codes of the module and the correction coefficient in a record table in an associated manner;
if the display position is changed, the correction coefficient corresponding to the display position in the record table in step S2 is used as the target correction coefficient for the module correction.
In the invention, the memory chip can be replaced by a transmitting card corresponding to the module; the corresponding codes, correction coefficients and display positions are obtained from the sending card, so that on one hand, the modules can be guaranteed to have the required codes, correction coefficients and display positions in the normal operation process, and the problem that the codes, correction coefficients and display positions are inapplicable to influence the normal display of the screen body is avoided; on the one hand, the different versions of the receiving card can be updated, so that the problem of inconsistent versions of the receiving card in the same screen body is avoided, and the display effect of the screen body is prevented from being influenced.
Example 2:
the invention also provides a device for acquiring the module correction coefficient applied to the LED screen, which comprises a processor and a memory, wherein a computer program which can run on the processor is stored in the memory, and the method for acquiring the module correction coefficient applied to the LED screen is realized when the computer program is executed by the processor.
In an implementation of the apparatus of this embodiment, the memory and the processor are electrically connected directly or indirectly to enable transmission or interaction of data. For example, the elements may be electrically connected to each other via one or more communication buses or signal lines, such as through a bus. The memory stores computer-executable instructions for implementing the data access control method, including at least one software functional module that may be stored in the memory in the form of software or firmware, and the processor executes the software programs and modules stored in the memory to perform various functional applications and data processing. The memory may be, but is not limited to, random Access Memory (RAM), read Only Memory (ROM), programmable Read Only Memory (PROM), erasable read only memory (EPROM), electrically erasable read only memory (EEPROM), etc. The memory is used for storing a program, and the processor executes the program after receiving the execution instruction. Further, the software programs and modules within the memory may also include an operating system, which may include various software components and/or drivers for managing system tasks (e.g., memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components. The processor may be an integrated circuit chip with signal processing capabilities. The processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like. The methods, steps and logic flow diagrams disclosed in the present embodiments may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
By using the device of the embodiment, the current correction of the LED screen at the playing section can be realized, whether the module is detached or replaced or not can be automatically judged, and if yes, the replaced correction coefficient can be automatically obtained and the correction coefficient of the receiving card FLASH can be updated.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (9)
1. The method for acquiring the module correction coefficient applied to the LED screen is characterized by comprising the following steps of:
step S1: encoding each module to be used, respectively associating the encoding with the correction coefficient corresponding to each module, and storing the encoding into a storage chip corresponding to the module;
step S2: when the module is powered on for the first time, reading codes of the modules corresponding to the current display positions, and storing the codes and correction coefficients corresponding to the modules into receiving cards corresponding to all the modules according to the relation of the display positions;
step S3: performing a second power-on operation on the module, and enabling the receiving card to send a detection frame to a memory chip in the module according to a preset time interval to obtain a feedback frame returned by the memory chip for the detection frame; in step S3, the receiving card sends a detection frame to a memory chip in the module according to a preset time interval, and in the first time interval, the memory chip returns a feedback frame to the detection frame, and then step S5 is executed;
step S4: reading codes of modules corresponding to the current display positions, and judging whether the codes are consistent with the codes in the step S2; if the two types of the data are consistent, executing the step S5, and if the two types of the data are inconsistent, executing the step S6;
step S5: taking the correction coefficient corresponding to the module in the step S2 as a target correction coefficient for correcting the module;
step S6: judging whether the inconsistent modules only change in display positions, if not, taking the correction coefficient corresponding to the module in the step S1 as a target correction coefficient for correcting the module; if the display position is changed, the correction coefficient corresponding to the display position in the step S2 is used as a target correction coefficient for correcting the module.
2. The method for obtaining the module correction coefficient applied to the LED screen as claimed in claim 1, wherein the method comprises the following steps: in step S1, when each module to be used is encoded, encoding is performed according to a preset encoding table, and the encoding of each module is a unique encoding; the preset encoding table is encoded in a binary form.
3. The method for obtaining the module correction coefficient applied to the LED screen according to claim 1 or 2, wherein the method comprises the following steps: in step S2, the codes are stored in the record tables of the receiving cards corresponding to all the modules according to the relation of the display positions, the correction coefficients stored in the memory chip are directly obtained according to the codes, and the correction coefficients are stored in the record tables of the receiving cards corresponding to all the modules according to the relation of the correction coefficients and the codes; and the record list stores codes and correction coefficients corresponding to each module according to the association of the display positions of the modules in the screen body.
4. The method for obtaining the module correction coefficient applied to the LED screen as claimed in claim 3, wherein: in step S6, if it is determined that the display position is not changed, the correction coefficient of the memory chip corresponding to the module in step S1 is read, the correction coefficient is used as a target correction coefficient for correcting the module, and the code and the correction coefficient of the module are stored in the record table in an associated manner; if the display position is judged to be changed, the correction coefficient corresponding to the display position in the record table is used as a target correction coefficient for correcting the module.
5. The method for obtaining the module correction coefficient applied to the LED screen as claimed in claim 3, wherein: in step S3: and the receiving card sends a detection frame to a storage chip in the module according to a preset time interval, and the storage chip returns a feedback frame to the detection frame in a second time interval, so that the step S4 is executed.
6. The method for obtaining the module correction coefficient applied to the LED screen as claimed in claim 3, wherein: in step S3: and the receiving card sends detection frames to the memory chips in the modules according to preset time intervals, and if the detection frames returned by the memory chips are not received continuously for preset times, the positions of the modules which cannot be detected are marked.
7. The method for obtaining the module correction coefficient applied to the LED screen as claimed in claim 6, wherein the method comprises the following steps: the receiving card sends a detection frame to a storage chip in the module according to a preset time interval, and reads the currently detected code of the new module when a new module is detected at the marked module position, and judges whether the code is consistent with the unique code recorded at each display position in the record table;
if the two values are consistent, executing a step S5;
if not, step S6 is performed.
8. The method for obtaining the module correction coefficient applied to the LED screen as claimed in claim 1, wherein the method comprises the following steps: and the memory chip is replaced by a transmitting card corresponding to the module.
9. An acquisition device of module correction coefficients applied to an LED screen, comprising a processor and a memory, wherein the memory stores a computer program executable on the processor, and the acquisition method of module correction coefficients applied to an LED screen according to any one of claims 1 to 8 is implemented when the computer program is executed by the processor.
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