CN116056026A - Wireless communication Chinese character display LED desk screen wireless control driver - Google Patents

Wireless communication Chinese character display LED desk screen wireless control driver Download PDF

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Publication number
CN116056026A
CN116056026A CN202310022830.3A CN202310022830A CN116056026A CN 116056026 A CN116056026 A CN 116056026A CN 202310022830 A CN202310022830 A CN 202310022830A CN 116056026 A CN116056026 A CN 116056026A
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CN
China
Prior art keywords
chinese character
screen
module
name
led
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Pending
Application number
CN202310022830.3A
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Chinese (zh)
Inventor
郑喜凤
朱旭
曹慧
汪洋
邢繁洋
于晋桓
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Changchun Cedar Electronics Technology Co Ltd
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Changchun Cedar Electronics Technology Co Ltd
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Publication date
Application filed by Changchun Cedar Electronics Technology Co Ltd filed Critical Changchun Cedar Electronics Technology Co Ltd
Priority to CN202310022830.3A priority Critical patent/CN116056026A/en
Publication of CN116056026A publication Critical patent/CN116056026A/en
Pending legal-status Critical Current

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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]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention relates to a wireless communication Chinese character display LED desk screen wireless control driver; in the driver, a main control module receives a Chinese character display instruction sent by an upper computer through a WIFI module, calls a Chinese character display function, reads dot matrix data corresponding to Chinese characters to be displayed according to a word stock in a cache module, and controls the on-off of corresponding pixel points on an LED screen to display the Chinese characters. The invention has the advantages of simple operation, higher transmission efficiency, low cost and strong practicability.

Description

Wireless communication Chinese character display LED desk screen wireless control driver
Technical Field
The invention belongs to the technical field of display driving, and particularly relates to an LED desk screen wireless control driver for displaying Chinese characters in wireless communication.
Background
The LED desk screen is widely applied to various scenes such as business meetings, courts and banks, and achieves a leading level in the display effect. The traditional LED desk screen uses a receiving card to drive the LED desk screen, and the receiving card needs to be configured according to the drive IC, the row IC, the scanning mode, the dot spacing and the resolution parameters of the carried LED desk screen when in use. In addition, the traditional LED desk screen is high in operation complexity and high in transmission failure rate, and labor cost is greatly increased because a network cable or a Type-C data line is required to be connected to transmit a program to be displayed when the program is updated. In addition, when in transmission, a plurality of network cables or other data transmission cables are required to be prepared, so that the efficiency is low, the cost is high, and the display effect is affected. In practice, the scheme of controlling the LED desk screen by the receiving card is generally applied to video transmission. Only Chinese characters or pictures need to be displayed in the application scene of the desk screen, so that resources of the scheme are wasted.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the LED desk screen wireless control driver for displaying the wireless communication Chinese characters, which is simple and convenient to operate and high in transmission efficiency.
In order to solve the technical problems, in the LED desk screen wireless control driver for displaying the Chinese characters through wireless communication, a main control module receives a Chinese character display instruction sent by an upper computer through a WIFI module, invokes a word stock in a cache module (unified with claim 1), and controls the on-off of corresponding pixel points on an LED screen according to dot matrix data corresponding to the Chinese characters to be displayed so as to realize the display of the Chinese characters.
The character corresponding to the instruction for displaying Chinese characters is HZ+name; when the main control module receives an instruction for displaying Chinese characters, name Chinese character data in the HZ+name is stored in an internal receiving array, a Chinese character displaying function is called at the same time, and the on-off of corresponding pixel points on the LED screen is controlled according to dot matrix data corresponding to the name, so that the name is displayed.
And the main control module queries dot matrix data corresponding to the name in the word stock according to the GBK code.
The main control module also receives a Chinese character storage instruction sent by the upper computer through the WIFI module, calls a data writing function and sequentially writes the Chinese character data of each name in the character instruction into a sector at the tail end of the cache module.
The characters corresponding to the Chinese character storage instruction are ' CC+name+space+name+space ' & gt name ', and the Chinese character data of each name is stored in a sector at the tail end of the caching module in a GB2312 internal code mode.
The main control module also receives a color changing character instruction sent by the upper computer through the WIFI module, and adjusts the duty ratio of the pixel R, G, B luminous chip in the on-state on the LED screen according to the color information in the character instruction, so that the display of names with different colors is realized.
The main control module also receives a next name character display instruction sent by the upper computer through the WIFI module, controls the data pointers in the buffer module to be overlapped in sequence, calls a Chinese character display function at the same time, and controls the on-off of corresponding pixel points on the LED screen according to next Chinese character lattice data to realize the display of the next name.
When the word stock in the cache module needs to be changed, the main control module reads the word stock to be replaced stored in the SD card and stores the word stock to the cache module to replace the original word stock.
When the key signal is received by the main control module, the data pointers in the buffer memory module are controlled to be overlapped in sequence according to the key signal, and simultaneously, the function of displaying Chinese characters is called, and the on-off of corresponding pixel points on the LED screen is controlled according to the dot matrix data of the next Chinese character, so that the display of the next name is realized.
The WiFi module and the main control module are fixed in interlayers of the front LED screen and the rear LED screen of the LED table screen, the main control module is connected with module connectors carried on PCB boards in interlayers of the front LED screen and the rear LED screen through DDR2 interfaces, and the main control module is electrically connected with each display module of the front LED screen and each display module of the rear LED screen through the module connectors.
The invention has the following beneficial effects:
the invention can replace a receiving card part in the traditional LED desk screen driving circuit to finish driving the LED desk screen, can realize wireless communication with an upper computer and finish functions of downloading programs, switching programs, setting characters and the like. The process of configuring the LED screen by the wireless communication LED desk screen driver is completed when the self program is initialized, so that the process of manual configuration in the later period is omitted, and the labor cost is greatly reduced. The WIFI communication mode is used in character instruction transmission, wireless transmission is achieved, limitation of wired communication is removed, and convenience in use of the LED desk screen is greatly improved. The invention has the advantages of simple operation, higher transmission efficiency, low cost and strong practicability.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 is a schematic diagram of a conventional LED panel driving method.
Fig. 2 is a schematic diagram of a driving mode of an LED panel according to the present invention.
Fig. 3 is a schematic diagram of the overall structure of the LED desk screen.
Fig. 4 is a block diagram of a wireless communication Chinese character display LED desk screen wireless control driver structure of the present invention.
Fig. 5 is a schematic diagram of a hardware structure of an LED desk screen adopting the present invention.
Fig. 6 is a schematic diagram of system initialization contents.
Fig. 7 is a flowchart of a main routine of the present invention.
FIG. 8 is a diagram showing the relationship between the character commands and the corresponding functions of the upper computer.
Detailed Description
The present invention will now be described in further detail with reference to the drawings and examples, it being understood that the specific examples described herein are intended to illustrate the invention only and are not intended to be limiting. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements or interaction relationship between the two elements. The specific meaning of the above terms in the present invention can be understood in detail by those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below", "beneath" the second feature includes the first feature being "directly under" and obliquely below "the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, for convenience of description and simplicity of operation, and are not meant to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in FIG. 2, the wireless control driver for the LED desk screen for displaying Chinese characters in wireless communication is used for replacing a receiving card part in a traditional driving scheme of the LED desk screen to finish driving the LED desk screen.
As shown in fig. 3, the main body of the LED desk screen comprises an LED display screen 1 and a desk screen bracket 2; the LED display screen 1 is fixed on the desk screen support 2 and comprises a front-facing LED screen and a rear-facing LED screen.
As shown in FIG. 4, the wireless communication Chinese character display LED desk screen wireless control driver comprises a WiFi module, a main control module, a cache module, an SD card and keys.
As shown in fig. 5, the WiFi module 6 and the main control module 3 are fixed in the interlayer of the front and rear LED screens, and the power module and the module connector 4 are mounted on the PCB adapter board in the interlayer of the front and rear LED screens; the key 5 is fixed on the frame of the LED desk screen.
The WIFI module specifically adopts ESP8266 and is communicated with the main control module through a serial port (LVTTL); the WIFI module is internally provided with a TCP/IP protocol stack, so that conversion between a serial port and WIFI can be realized; through serial configuration, data may be transmitted over a network.
The main control module adopts MCU, MCU and WIFI module electric connection, communicates with the WIFI module through serial ports agreement, passes through DDR2 interface connection with the PCB keysets, and its connecting wire includes power cord, RGB signal transmission line.
The buffer memory module adopts SPIFLASH.
The method for sending the instruction data by the upper computer terminal comprises the following steps: configuring network protocol parameters as TCP Client, remote IP as corresponding WIFI module IP and network port as 8088; and the main control module is connected with the main control module and then sends corresponding instructions to control the main control module to realize corresponding display functions.
The upper computer controls the invention to execute corresponding functions in a mode of sending character instructions; the character instructions are four, namely: displaying Chinese characters, storing Chinese characters, changing colors, and displaying the next name. The characters transmitted by the corresponding host computer are "hz+name", "cc+name+space+name+space", +name "," ys+color (color_black, color_red, color_green, color_yellow, color_blue, color_pink, color_cyan, color_white) "," NEXT ".
When the character instruction sent by the upper computer is to display Chinese characters, the main control module stores name Chinese character data in the character HZ+name in the receiving array, and meanwhile, the main control module calls a display Chinese character function, and queries lattice data corresponding to the name in the word stock of the cache module according to GBK codes. And the main control module controls the on-off of the corresponding pixel points on the LED screen according to the dot matrix data, so that the name can be displayed.
When the character instruction sent by the upper computer is to store Chinese characters, the main control module stores all the name Chinese character data in the characters of CC+name+space+name+space. The Chinese character data are stored in a GB2312 internal code mode, when the Chinese character data are required to be displayed, the main control module retrieves dot matrix data corresponding to Chinese characters from the GBK word stock stored by the cache module, and the on-off of corresponding pixel points on the LED screen is controlled according to the dot matrix data, so that the Chinese character display is realized.
When the character instruction sent by the upper computer is color changing, the main control module judges the color to be displayed by the upper computer according to the character representing the color behind YS, and correspondingly adjusts the duty ratio of the luminous chip of the pixel R, G, B in the on state on the LED screen, so that the display of names with different colors can be realized.
When the character instruction sent by the upper computer is to display the next name, the main control module controls the data pointers in the buffer memory module to be overlapped in sequence, meanwhile, the main control module calls and displays the Chinese character function, and controls the on-off of the corresponding pixel points on the LED screen according to the dot matrix data of the next Chinese character, so that the display of the next name can be realized.
When the word stock in the cache module needs to be changed, the main control module reads the word stock to be replaced stored in the SD card and stores the word stock to the cache module to replace the original word stock.
The keys are fixed on the frame of the LED desk screen and are electrically connected with the main control module; when the main control module receives the key signals, the data pointers in the buffer memory module are controlled to be overlapped in sequence, meanwhile, the main control module calls and displays Chinese character functions, and the on-off of corresponding pixel points on the LED screen is controlled according to the dot matrix data of the next Chinese character, so that the display of the next name is realized.
The main control module is connected with a module connector carried on the PCB through a DDR2 interface, and the module connector is provided with sockets of the front LED screen and the rear LED screen so as to be electrically connected with each display module of the front LED screen and each display module of the rear LED screen in a socket mode according to a certain sequence.
The upper computer can communicate with the main control module through the WIFI module in a hot spot mode, and sends character instructions.
As shown in fig. 6, the system including the screen and the present invention can be initialized by the internal program of the main control module; the initialized content comprises system clock initialization, hardware peripheral initialization and storage initialization; the system clock initialization comprises delay initialization, timer initialization and interrupt initialization of a main control module; the hardware peripheral initialization comprises key initialization, WIFI module initialization and screen initialization; the WIFI module is initialized in the process that the main control module sends instructions to the WIFI module through the serial port to configure network parameters, network modes, hot spot names and hot spot passwords, and hot spots are started. The screen initialization process is as follows: transmitting screen setting parameters to the LED screen driving IC through the module connector socket, wherein the set parameters comprise: scanning line number, blanking level, constant current source current output. The storage initialization comprises buffer module initialization and SD card initialization.
After the system initialization is completed, the main control module circulates through a timer, and starts to monitor the data received by the WIFI module in real time, and if a character instruction is received, the Chinese character display, the Chinese character storage, the Chinese character color replacement or the next name display work is completed according to the corresponding character instruction. The character command and corresponding functions are shown in fig. 8.

Claims (10)

1. A wireless control driver for an LED desk screen for displaying Chinese characters in wireless communication is characterized in that in the driver, a main control module receives a Chinese character display instruction sent by an upper computer through a WIFI module, invokes a word stock in a cache module, and controls the on-off of corresponding pixel points on the LED screen according to dot matrix data corresponding to Chinese characters to be displayed so as to display the Chinese characters.
2. The LED desk screen wireless control driver for wireless communication chinese character display of claim 1, wherein the character corresponding to the display chinese character command is "hz+name"; when the main control module receives an instruction for displaying Chinese characters, name Chinese character data in the HZ+name is stored in an internal receiving array, a Chinese character displaying function is called at the same time, and the on-off of corresponding pixel points on the LED screen is controlled according to dot matrix data corresponding to the name, so that the name is displayed.
3. The wireless communication Chinese character display LED desk screen wireless control driver according to claim 2, wherein the main control module inquires dot matrix data corresponding to names in a character library according to GBK codes.
4. The wireless control driver for a wireless communication Chinese character display LED desk screen according to claim 1, wherein the main control module further receives a Chinese character storage command sent by the upper computer through the WIFI module, calls a data writing function, and writes the Chinese character data of each name in the command into a sector at the end of the cache module in sequence.
5. The LED desk screen wireless control driver for wireless communication chinese character display of claim 4, wherein said character corresponding to said stored chinese character command is "cc+name+space+name+space". The name+name ", and each name chinese character data is stored in a sector at the end of the buffer module in the form of GB2312 internal code.
6. The wireless control driver for the LED desk screen for displaying the Chinese characters in the wireless communication manner according to claim 1, wherein the main control module further receives a color changing character command sent by the upper computer through the WIFI module, and adjusts the duty ratio of the light emitting chips of the pixel R, G, B in the on state on the LED screen according to the color information in the character command, so as to display names in different colors.
7. The wireless control driver for the LED desk screen for displaying the Chinese characters in the wireless communication mode according to claim 1, wherein the main control module further receives a character instruction for displaying the next name sent by the upper computer through the WIFI module, controls the data pointers to be overlapped in sequence, calls a Chinese character displaying function at the same time, and controls the on-off of corresponding pixel points on the LED screen according to the dot matrix data of the next Chinese character to display the next name.
8. The wireless communication Chinese character display LED desk screen wireless control driver according to claim 1, wherein when the character library in the buffer memory module needs to be changed, the main control module reads the character library stored in the SD card to be replaced and stores the character library in the buffer memory module to replace the original character library.
9. The wireless control driver for the LED desk screen for displaying the Chinese characters in the wireless communication mode according to claim 1, wherein the main control module further receives key signals, controls the internal data pointers to be overlapped in sequence according to the key signals, calls a Chinese character function to be displayed at the same time, and controls the on-off of corresponding pixel points on the LED screen according to the dot matrix data of the next Chinese character to display the next name.
10. The wireless communication Chinese character display LED desk screen wireless control driver according to claim 1, wherein the WiFi module and the main control module are fixed in an interlayer of a front LED screen and a rear LED screen of the LED desk screen, the main control module is connected with a module connector carried on a PCB board in the interlayer of the front LED screen and the rear LED screen through DDR2 interfaces, and is electrically connected with each display module of the front LED screen and each display module of the rear LED screen through the module connector.
CN202310022830.3A 2023-01-08 2023-01-08 Wireless communication Chinese character display LED desk screen wireless control driver Pending CN116056026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310022830.3A CN116056026A (en) 2023-01-08 2023-01-08 Wireless communication Chinese character display LED desk screen wireless control driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310022830.3A CN116056026A (en) 2023-01-08 2023-01-08 Wireless communication Chinese character display LED desk screen wireless control driver

Publications (1)

Publication Number Publication Date
CN116056026A true CN116056026A (en) 2023-05-02

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Application Number Title Priority Date Filing Date
CN202310022830.3A Pending CN116056026A (en) 2023-01-08 2023-01-08 Wireless communication Chinese character display LED desk screen wireless control driver

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