CN112562581A - Transmission system, method and device for automatic point screen - Google Patents
Transmission system, method and device for automatic point screen Download PDFInfo
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- CN112562581A CN112562581A CN202011613316.XA CN202011613316A CN112562581A CN 112562581 A CN112562581 A CN 112562581A CN 202011613316 A CN202011613316 A CN 202011613316A CN 112562581 A CN112562581 A CN 112562581A
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- 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 transmission system, a method and a device for an automatic point screen, wherein a controller is adopted to arrange a plurality of connected and spliced LED modules and transmission lines, wherein the transmission line is used for connecting the memory unit corresponding to the LED module and the controller and bidirectionally transmitting data, the LED module is connected with the controller through the transmission line, so that the controller can acquire/modify the module attribute information, wherein the memory unit is connected with the LED module and used for receiving and analyzing data signals and executing instructions of the data signals, so as to realize automatic lighting of the LED module, thus realizing communication between the controller and the LED module by only adopting the simple transmission line, the controller acquires the attribute information of the upper module of the memory unit, and the LED display screen can be automatically and intelligently managed after being processed by the controller.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to a transmission system, a transmission method and a transmission device for an automatic point screen.
Background
LED display screen uses more and more extensively in people's life, however large tracts of land LED display screen often is formed by little LED display screen concatenation, need carry out the unified debugging of all LED display screens before using, nevertheless often the debugging process is more complicated, technical staff at first need clearly understand information such as drive chip type, module width, module height and scanning mode, and whole processing operation process needs professional technical staff just can operate, and the operation is complicated and more loaded down with trivial details, it is very consuming time and loaded down with trivial details.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a transmission system, a method and a device for an automatic point screen, and aims to solve the problem that the operation of the existing LED point screen is complicated.
The technical scheme of the invention is as follows:
a transmission system for an automatic point screen comprises a controller, a plurality of LED modules and a plurality of LED modules, wherein the LED modules are connected and spliced; wherein the system further comprises:
the transmission line is used for connecting the memory unit corresponding to the LED module and the controller and bidirectionally transmitting data;
the LED module is connected with the controller through the transmission line, so that the controller can acquire/modify module attribute information;
the LED module is connected with:
and the memory unit is used for receiving and analyzing the data signal and executing the instruction of the data signal so as to realize the automatic lighting of the LED module.
The transmission system for the automatic point screen is characterized in that the controller and the LED modules are transmitted through a single wire and connected in a single bus mode.
The transmission system for an automated spot screen, wherein the controller comprises:
a setting unit for setting one period as a sum of a high level transmission time and a low level transmission time, a "0" code being a high level transmission time of 1/4 cycle times and a low level transmission time of 3/4 cycle times, a "1" code being a high level transmission time of 3/4 cycle times and a low level transmission time of 1/4 cycle times, a reset signal being a low level for N cycles, N being a preset natural number;
and the controller coding unit is used for coding the instruction executed by the LED module and sending the instruction to the memory unit.
The transmission system for the automatic dot screen, wherein the controller encoding unit comprises:
the controller checking unit is used for sending the checking module command to the memory unit, receiving feedback information from the memory unit and analyzing the state of the LED module;
the controller module reading unit is used for sending an instruction for acquiring the LED module codes to the memory unit and receiving the LED module codes fed back from the memory unit;
the controller writing module unit is used for sending an instruction of coding the LED module to the memory unit, coding the LED module and sending the code to the memory unit so as to realize the operation of a single module;
and the controller parameter unit is used for sending a module reading parameter instruction to the memory unit, reading the LED module parameter fed back from the memory unit, and/or modifying the parameter, and transmitting the modified parameter to the LED module.
The transmission system for an automated spot screen, wherein the memory unit comprises:
the module checking unit is used for receiving a checking module command of the controller checking unit, and when the LED module is in place normally, the module checking unit feeds back the 0 code to the controller checking unit;
the module feedback unit is used for receiving and analyzing the LED module code acquisition instruction and feeding back the LED module code to the memory unit;
the module coding unit is used for receiving a coded LED module command of the controller, analyzing the code sent by the controller writing module unit and executing the code on the LED module;
and the module parameter unit is used for receiving a module parameter reading instruction sent by the controller parameter unit, feeding back the parameter instruction of the LED module to the controller, and/or receiving the modified parameters.
The transmission system for the automatic point screen is characterized in that the controller and the LED module adopt a return-to-zero code protocol for transmission;
the LED module further comprises:
and one end of the signal receiving interface is coupled with the transmission line and receives the data signal on the transmission line, and the other end of the signal receiving interface is coupled with the memory unit.
A method of using the transmission system for automated point-screen as described above, wherein the method comprises:
s100, setting a period as the sum of high level transmission time and low level transmission time, setting a 0 code as high level transmission time 1/4 period time and low level transmission time 3/4 period time, setting a 1 code as high level transmission time 3/4 period time and low level transmission time 1/4 period time, setting a reset signal as low level of N periods, and setting N as a preset natural number;
s200, coding the instruction executed by the LED module and sending the instruction to the memory unit.
The method for the transmission system of the automatic dot screen, wherein the S200 further includes:
s210, the controller sends a checking module command to the memory unit, receives feedback information from the memory unit, analyzes the state of the LED module, receives the checking module command, and feeds back the 0 code to the controller when the LED module is in place normally;
s220, the controller sends the instruction for obtaining the LED module codes to the memory unit and receives the LED module codes fed back from the memory unit, and the LED module receives and analyzes the instruction for obtaining the LED module codes and feeds back the LED module codes to the memory unit;
s230, the controller sends an instruction for coding the LED module to the memory unit, codes the LED module and sends the codes to the memory unit so as to realize the operation of a single module, and the memory unit receives the instruction for coding the LED module of the controller, analyzes the codes sent by the controller and executes the codes on the LED module.
The method for the transmission system of the automatic dot screen, wherein the method further comprises the following steps:
s240, the controller sends a module reading parameter instruction to the memory unit, reads the LED module parameter fed back from the memory unit, and/or modifies the parameter, and transmits the modified parameter to the LED module, the memory unit receives the module reading parameter instruction sent by the controller, feeds back the parameter instruction of the LED module to the controller, and/or receives the modified parameter.
A transmission device for an automatic point screen comprises a controller, a plurality of LED modules and a controller, wherein the LED modules are connected and spliced; wherein the apparatus comprises:
the transmission line is used for connecting the memory unit corresponding to the LED module and the controller and transmitting data;
the LED module is connected with the controller through the transmission line, so that the controller can acquire/modify module attribute information;
the LED module includes:
the signal receiving interface is coupled with the transmission line and receives a receiving data signal on the transmission line;
and a memory unit, coupled to the signal receiving interface, for receiving and analyzing the received data signal and executing the command of the received data signal.
Has the advantages that: the invention provides a transmission system for an automatic point screen, which adopts a controller, a plurality of LED modules and transmission lines which are connected and spliced are arranged, wherein the transmission system is used for transmitting data output by the controller to a memory unit corresponding to the LED modules, the LED modules are connected with the controller through the transmission lines, the LED modules are connected with the memory unit, the memory unit is used for receiving and analyzing data signals and executing instructions of the data signals to realize the automatic lighting of the LED modules, so that the communication between the controller and the LED modules can be realized only by adopting simple transmission lines, the controller acquires the attribute information of the modules on the memory unit, and the automatic and intelligent management of the LED display screen can be realized after the attribute information is processed by the controller.
Drawings
Fig. 1 is a schematic diagram of the connection between the controller and the LED module according to the present invention.
Fig. 2 is a transmission format of return-to-zero write data according to the present invention.
Fig. 3 is a transmission format of return-to-zero code read data provided by the present invention.
FIG. 4 is a timing diagram of bus on-bit detection according to the present invention.
FIG. 5 illustrates bus in-place detection data transmission provided by the present invention.
FIG. 6 illustrates a write module address data transfer according to the present invention.
FIG. 7 is a process flow of the operation of the storage control unit analyzing the address of the write module according to the present invention.
FIG. 8 is a flowchart illustrating the operation process of the memory control unit analyzing the address of the read module according to the present invention.
FIG. 9 is a block diagram illustrating write module parameter data transmission according to the present invention.
Fig. 10 is a process flow of analyzing write module parameter operation by the storage control unit according to the present invention.
FIG. 11 is a diagram illustrating parameter data transmission of a read module according to the present invention.
Fig. 12 is a flow chart of a method of automating a transmission system of a point screen provided by the present invention.
Fig. 13 is a flow chart of a system for automating the transmission system of the point screen provided by the present invention.
FIG. 14 is a block diagram illustrating address data transmission of a read module according to the present invention.
Detailed Description
The invention provides a transmission system, a method and a device for an automatic point screen, and the invention is further described in detail below in order to make the purpose, the technical scheme and the effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the transmission system for an automatic dot screen according to the present invention includes a controller 10, wherein the controller 10 is configured to manage a plurality of LED modules 20 forming a matrix mosaic, and respectively connect a memory unit 30 corresponding to each LED module 20 through a transmission line 40, and the LED modules 20 respectively display corresponding local images in an overall image of a large screen to form the overall image of the large screen by mosaic. The controller 10 can acquire the module attributes from the LED display screen by adopting single-wire transmission, wherein the controller 10 and the LED module 20 can adopt a return-to-zero code protocol for transmission. According to the invention, the communication between the controller 10 and the LED module 20 can be realized by only using one transmission line 40, the controller 10 acquires the attribute information stored in the LED module 20 through single-line transmission, normal display of the LED display screen can be realized through processing by the controller 10, and automatic and intelligent management control of the display of the LED module 20 can be realized without human participation.
Wherein the controller 10 includes a setting unit and a controller encoding unit. As shown in fig. 2 and 3, the setting unit may set one period as a sum of a high level transmission time and a low level transmission time, a "0" code is a high level transmission time of 1/4 cycle times and a low level transmission time of 3/4 cycle times, a "1" code is a high level transmission time of 3/4 cycle times and a low level transmission time of 1/4 cycle times, a reset signal is set as a low level for N cycles, and N is a predetermined natural number.
The controller encoding unit may be configured to edit instructions executed by the LED module 20 and send the instructions to the memory unit 30. The controller encoding unit includes a controller checking unit 11, a controller reading module unit 12, a controller writing module unit 13 and a controller parameter unit 14, as shown in fig. 13.
The controller checking unit 11 is configured to send the checking module command to the memory unit 30, and receive feedback information from the memory unit 30 to analyze a state of the LED module 20. For example, as shown in fig. 4 and 5, the controller 10 first sends a reset signal, edits the checking module command value of 0XFF, and then sends the checking module command. Therefore, the LED modules 20 can be automatically checked, and the LED modules 20 can be normally used and cannot be normally used, so that reference is provided for the follow-up control of the LED modules 20, and the automation efficiency and the display effect of the LED display screen are greatly improved.
The controller module reading unit 12 can send an instruction to obtain the LED module code to the memory unit 30, and receive the LED module code fed back from the memory unit 30. As shown in fig. 14, when acquiring codes from the LED module 20, a reset signal may be sent first, then a module address code reading instruction (0XFD) is input, then a verification identifier is input, and finally the module address is added.
The controller writing module unit 13 is configured to send an instruction of the LED module code to the memory unit 30, encode the module and send the code to the memory unit 30, so as to implement an operation on a single module, for example, a single module needs to be debugged, and then the controller writing module unit 13 writes the code in the controller 10 according to reading the single module code information, for example, so as to encode the LED module 20, so that an operation of individually controlling the reading and writing of the module can be implemented. As shown in fig. 6, when encoding the LED module 20, a reset signal may be sent first, then a write module address encoding instruction (0XFE) is input, then a verification identifier is input, and finally the module address and the encoding are added.
As shown in fig. 13, the controller parameter unit 14 is configured to send a module parameter reading command to the memory unit 30, and read the parameters of the module, for example, as shown in fig. 11, sequentially send a reset signal command, an address code (0XFC), a verification identifier, a module address, a start address, a size of read data, and finally read data, so as to read the module parameters. The controller parameter unit 14 may also be configured to modify and/or modify the parameters and transmit the modified parameters to the LED module 20. For example, as shown in fig. 9, writing the module parameter can be implemented by first sending a reset signal, then writing down the address code (0XFC), verifying the identification, the module address, the write start read address value, and the write data size, and finally writing the data in sequence. The above instructions can be defined by the user according to the situation.
The transmission line 40 is used for transmitting data output by the controller 10, and can implement data transmission, and through the transmission line 40, for example, a return-to-zero code transmission signal line, signal transmission is performed in a return-to-zero protocol manner, and writing can be performed in a return-to-zero code write data transmission format provided in fig. 1, and reading can be performed in a return-to-zero code read data transmission format provided in fig. 2. As shown in fig. 1, the controller 10 is connected to each LED module 20 by a single bus, and a resistor is required for a communication data line on each module to ensure that the data line is kept in a high level state when the data line is in an idle state, so as to simplify operations and circuits. In addition, the present invention may also adopt other single bus modes to transmit data, for example, a single bus mode proposed by DALLAS corporation, a customized single-line transmission mode, or a bidirectional multi-line transmission mode, and the communication transmission between the controller 10 and the module is realized through an ic bus communication mode, a uart communication mode, a spi communication mode, a multi-path LVDS differential line, a CAN bus, or other bus modes. By adopting the transmission, the connection between the controller 10 and the LED module 20 can be simplified, the transmission can be carried out in time, and the LED screen can be effectively, automatically and intelligently controlled.
The system further includes the LED module 20, the LED module 20 is connected to the controller 10 through the transmission line 40, as shown in fig. 13, wherein the LED module 20 receives and analyzes a data signal and executes an instruction of the data signal, and the LED module 20 is connected to the controller 10 through the transmission line 40. The LED module 20 includes a memory unit 30 and a signal receiving interface. Wherein, one end of the signal receiving interface is coupled to the transmission line 40 and receives the data signal on the transmission line 40, and the other end is coupled to the memory unit 30.
The memory unit 30 may be a single chip microcomputer, a 245 chip, or other memory units 30 supporting a single-wire transmission function and having a storage function, or other memory units 30 supporting a storage function and having a protocol analysis function may be adopted. Such as a sensor chip with a memory function, a driver chip with a memory function, a flash memory unit, etc. The memory unit 30 includes a module checking unit 31, a module feedback unit 32, a module encoding unit 33, and a module parameter unit 34.
The module checking unit 31 is configured to receive a checking module command of the controller checking unit 11, and when the module is in place, the module checking unit 31 feeds back the "0" code to the controller checking unit 11.
As shown in fig. 8 and 13, the module feedback unit is configured to receive and analyze an instruction for obtaining an LED module code, and feed back the LED module code to the memory unit. For example, as shown in fig. 8, the memory unit 30 receives a reset instruction, then receives a write address instruction and a verification identification instruction in sequence, then verifies whether the instructions match, and when the verification matches yes, the read module succeeds, and then the process is ended, and if the verification matches no, the process is ended directly. The module feedback unit 32 is configured to receive and analyze the instruction for obtaining the LED module code, and feed back the LED module code to the memory unit 30.
The module encoding unit 33 is configured to receive and analyze the code sent by the module encoding unit 33, for example, as shown in fig. 7, the module encoding unit 33 receives a reset instruction, then sequentially receives a write address instruction and a verification identification instruction, then verifies whether the two instructions are matched, when the verification match is yes, the write address is successful, then the process is ended, and if the verification match is not, the process is directly ended. The module encoding unit 33 further performs the encoding on the LED module 20.
As shown in fig. 10, the module parameter unit 34 receives the reset instruction, the write parameter instruction and the verification identification instruction, and passes the verification matching, if yes, receives the write module address again, and determines whether the address matching is matched, if the address matching is matched, receives the write parameter start address value again, receives the write parameter data size, and finally ends the rewriting of the parameters, if the verification matching is no, the address matching is not ended. The module parameter unit 34 receives and receives the module parameter reading instruction sent by the controller parameter unit, and feeds back the parameter instruction of the LED module to the controller.
In the following, the present invention is described in an embodiment, the controller 10 is connected to the LED module 20 through a return-to-zero transmission line 40, wherein the return-to-zero transmission line 40 is connected to the LED module 20 through the signal receiving interface. As shown in fig. 1, the return-to-zero transmission line 40 can be connected to the memory units 30 in different LED modules 20 by a single bus. Firstly, the controller checking unit 11 in the controller 10 sends a reset signal, edits the checking module instruction value 0XFF, and then sends the checking module instruction, the module encoding unit 33 in the memory unit 30 receives the reset signal, then receives the write address instruction and the verification identification instruction in sequence, then verifies whether the two instructions are matched, and if the two instructions are matched, the write address is successful, and then the flow is ended. When the module is normally in place after the address is successfully written, the module checking unit 31 feeds back the "0" code to the controller checking unit 11. Therefore, the LED module 20 can be checked, and the LED screen which cannot be normally used can be screened out. Then, the controller module reading unit 12 sends an instruction for acquiring the LED module code to the memory unit 30, that is, sends a reset signal, an address instruction, a verification identifier, and a module address, and the module feedback unit 32 feeds back the LED module code to the memory unit 30. The controller writing module unit 13 of the controller 10 sends an instruction of coding the LED module 20 to the memory unit 30, for example, sends a reset signal, then inputs a writing module address coding instruction (0XFE), then inputs a verification identifier, and finally adds a code to the module, the module coding unit 33 of the LED module 20 receives the reset instruction, then receives the writing address instruction and receives the verification identifier instruction in sequence, and then verifies whether the matching is performed, when the matching is verified, the address writing is successful, and then the process is finished, thus realizing the coding of the module, realizing that the controller 10 controls a single LED module 20 alone, being capable of conveniently controlling the display of the LED display screen, intelligently controlling the LED display screen comprehensively, for example, controlling the odd numbered screen to flash, and the numbered plural screens to be long and bright, thereby intelligently controlling the LED display, after the codes of the LED modules 20 are read, the codes are manually or automatically modified, so that the LED screen can be intelligently controlled in time. The present invention can also read and modify the parameters of the module, first, the controller parameter unit 14 of the controller 10 reads the parameter data in the memory unit 30, the controller parameter unit 14 can sequentially send a reset signal command, an address code (0XFC), a verification identifier, a module address, a read start address, a read data size, and finally read data, and the module parameter unit 34 feeds back the parameters of the module to it. The controller parameter unit 14 may then also send a reset signal, then write down the address code (0XFC), verify the identification, the module address, write the initial read address value, and write the data size in sequence, and finally write the data. The module parameter unit 34 receives a reset instruction, a write parameter instruction and a verification identification instruction, and after verification matching, if yes, the address of the write module is received again, whether the address matching is matched is judged, if the address matching is carried out, the initial address value of the write parameter is received again, the size of the write parameter data is received, and the parameter rewriting is finally finished, so that the module parameters can be modified, intelligent management can be further optimized, and data reference is provided for the next use of the LED screen.
In summary, the transmission system for an automatic dot screen provided by the present invention adopts the controller 10, the transmission line 40 and the LED module 20, wherein the transmission line 40 is used for transmitting data output by the controller 10 to perform data transmission, the LED module 20 is connected to the controller 10 through the transmission line 40, wherein the LED module 20 includes the memory unit 30, the memory unit 30 receives and analyzes data signals, and executes instructions of the data signals, so that communication between the controller 10 and the LED module 20 can be realized only by using the simple transmission line 40, and the controller 10 obtains module attribute information on the memory unit 30, and after being processed by the controller 10, automatic and intelligent management of the LED display screen can be realized. The invention can check the condition of the LED module by self, can control the module individually and the whole control module, can directly acquire the information of the LED module, and can update and modify the information of the LED module in time, thereby simplifying the control of the whole LED display screen and achieving the effect of intelligent display.
As shown in fig. 12, the present invention further provides a method for automating the transmission system of the dot screen, wherein the method comprises:
s100, setting a period as the sum of high level transmission time and low level transmission time, setting a 0 code as high level transmission time 1/4 period time and low level transmission time 3/4 period time, setting a 1 code as high level transmission time 3/4 period time and low level transmission time 1/4 period time, setting a reset signal as low level of N periods, and setting N as a preset natural number;
s200, encoding the instruction executed by the LED module 20, and sending the instruction to the memory unit 30.
S210, the controller 10 sends an inspection module command to the memory unit 30, receives feedback information from the memory unit 30, and analyzes the status of the LED module 20, the memory unit 30 receives the inspection module command, and when the LED module 20 is in place, feeds back the "0" code to the controller 10;
s220, the controller 10 sends an instruction for obtaining the LED module code to the memory unit 30, and receives the LED module code fed back from the memory unit 30, and the LED module 20 receives and analyzes the LED module 20 code instruction, and feeds back the LED module 20 code to the memory unit 30;
s230, the controller 10 sends an instruction of encoding the LED module to the memory unit 30, encodes the LED module and sends the code to the memory unit 30 to implement the operation of a single module, the memory unit 30 receives the instruction of encoding the LED module of the controller 10 and analyzes the code sent by the controller 10, and executes the code on the LED module 20.
S240, the controller 10 sends a module reading parameter instruction to the memory unit 30, and reads the LED module parameter fed back from the memory unit 30, and/or modifies the parameter, and transmits the modified parameter to the LED module 20, the memory unit 30 receives the module reading parameter instruction sent by the controller 10, and feeds back the parameter instruction of the LED module to the controller 10, and/or receives the modified parameter.
The method corresponds to the system, and the technical solution and the technical effect are not redundant here.
The invention also provides a transmission device for the automatic point screen, which comprises a controller 10, a plurality of LED modules 20 which are connected and spliced, and a transmission line 40. The transmission line is used for transmitting data output by the controller to the memory unit corresponding to the LED module;
the LED module 20 is connected with the controller 10 through the transmission line 40;
the LED module 20 includes:
the signal receiving interface is coupled with the transmission line and receives a receiving data signal on the transmission line;
and a memory unit 30, coupled to the signal receiving interface, for receiving and analyzing the received data signal, and executing the command of the received data signal.
The device corresponds to the system, and the technical solution and the technical effect are not redundant here.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a transmission system for automizing some screens, the system includes the controller, sets up a plurality of LED modules of connection concatenation, its characterized in that, the system still includes:
the transmission line is used for connecting the memory unit corresponding to the LED module and the controller and bidirectionally transmitting data;
the LED module is connected with the controller through the transmission line, so that the controller can acquire/modify module attribute information;
the LED module is connected with:
the memory unit is used for receiving and analyzing the data signal and executing the instruction of the data signal so as to realize automatic lighting of the LED module.
2. The transmission system for the automatic spot screen according to claim 1, wherein the controller and each of the LED modules are connected by a single wire and a single bus.
3. The transmission system for an automated spot screen according to claim 2, wherein the controller comprises:
a setting unit for setting one period as a sum of a high level transmission time and a low level transmission time, a "0" code being a high level transmission time of 1/4 cycle times and a low level transmission time of 3/4 cycle times, a "1" code being a high level transmission time of 3/4 cycle times and a low level transmission time of 1/4 cycle times, a reset signal being a low level for N cycles, N being a preset natural number;
and the controller coding unit is used for coding the instruction executed by the LED module and sending the instruction to the memory unit.
4. The transmission system for an automated point screen according to claim 3, wherein the controller encoding unit comprises:
the controller checking unit is used for sending the checking module command to the memory unit, receiving feedback information from the memory unit and analyzing the state of the LED module;
the controller module reading unit is used for sending an instruction for acquiring the LED module codes to the memory unit and receiving the LED module codes fed back from the memory unit;
the controller writing module unit is used for sending an instruction of coding the LED module to the memory unit, coding the LED module and sending the code to the memory unit so as to realize the operation of a single module;
and the controller parameter unit is used for sending a module reading parameter instruction to the memory unit, reading the LED module parameter fed back from the memory unit, and/or modifying the parameter, and transmitting the modified parameter to the LED module.
5. The transmission system for an automated point screen according to claim 4, wherein the memory unit comprises:
the module checking unit is used for receiving a checking module command of the controller checking unit, and when the LED module is in place normally, the module checking unit feeds back the 0 code to the controller checking unit;
the module feedback unit is used for receiving and analyzing the LED module code acquisition instruction and feeding back the LED module code to the memory unit;
the module coding unit is used for receiving a coded LED module command of the controller, analyzing the code sent by the controller writing module unit and executing the code on the LED module;
and the module parameter unit is used for receiving a module parameter reading instruction sent by the controller parameter unit, feeding back the parameter instruction of the LED module to the controller, and/or receiving the modified parameters.
6. The transmission system for the automated point screen according to claim 2, wherein the controller and the LED module adopt a return-to-zero code protocol for transmission;
the LED module further comprises:
and one end of the signal receiving interface is coupled with the transmission line and receives the data signal on the transmission line, and the other end of the signal receiving interface is coupled with the memory unit.
7. A method of using the transmission system for automated point screens of any of claims 3 to 6, the method comprising:
s100, setting a period as the sum of high level transmission time and low level transmission time, setting a 0 code as high level transmission time 1/4 period time and low level transmission time 3/4 period time, setting a 1 code as high level transmission time 3/4 period time and low level transmission time 1/4 period time, setting a reset signal as low level of N periods, and setting N as a preset natural number;
s200, coding the instruction executed by the LED module and sending the instruction to the memory unit.
8. The method for an automated spot screen transmission system according to claim 7, wherein the S200 further comprises:
s210, the controller sends a checking module command to the memory unit, receives feedback information from the memory unit, analyzes the state of the LED module, receives the checking module command, and feeds back the 0 code to the controller when the LED module is in place normally;
s220, the controller sends the instruction for obtaining the LED module codes to the memory unit and receives the LED module codes fed back from the memory unit, and the LED module receives and analyzes the instruction for obtaining the LED module codes and feeds back the LED module codes to the memory unit;
s230, the controller sends an instruction for coding the LED module to the memory unit, codes the LED module and sends the codes to the memory unit so as to realize the operation of a single module, and the memory unit receives the instruction for coding the LED module of the controller, analyzes the codes sent by the controller and executes the codes on the LED module.
9. The method for an automated point-screen transmission system according to claim 8, further comprising:
s240, the controller sends a module reading parameter instruction to the memory unit, reads the LED module parameter fed back from the memory unit, and/or modifies the parameter, and transmits the modified parameter to the LED module, the memory unit receives the module reading parameter instruction sent by the controller, feeds back the parameter instruction of the LED module to the controller, and/or receives the modified parameter.
10. A transmission device for an automatic point screen comprises a controller, a plurality of LED modules and a controller, wherein the LED modules are connected and spliced; characterized in that the device comprises:
the transmission line is used for connecting the memory unit corresponding to the LED module and the controller and transmitting data;
the LED module is connected with the controller through the transmission line, so that the controller can acquire/modify module attribute information;
the LED module includes:
the signal receiving interface is coupled with the transmission line and receives a receiving data signal on the transmission line;
and a memory unit, coupled to the signal receiving interface, for receiving and analyzing the received data signal and executing the command of the received data signal.
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