CN105955120B - Data transmission method and system applied to display screen system - Google Patents
Data transmission method and system applied to display screen system Download PDFInfo
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- CN105955120B CN105955120B CN201610339261.5A CN201610339261A CN105955120B CN 105955120 B CN105955120 B CN 105955120B CN 201610339261 A CN201610339261 A CN 201610339261A CN 105955120 B CN105955120 B CN 105955120B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2801—Broadband local area networks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21106—If specific I-O not updated in memory, priority access of I-O, data directly to microprocessor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The present invention relates to a kind of data transmission methods and system applied to display screen system.The method includes the steps: control systems in (i) display screen system to establish that first network channel is connect and the second network channel is connected with host computer；(ii) microprocessor module in control system obtains the control instruction data from host computer by first network channel and send the serial ports of control instruction data forwarding to microprocessor module to the display control module into control system as serial data；And (iii) microprocessor module obtains the display data from host computer by the second network channel, wherein the display data are the picture data for playing display for the display screen system.Therefore, by the parsing and regrouping process for reducing data real-time of the display screen system when user's control operates can be improved with the efficiency of transmission of data needed for Lifting Control System and by improving data transmission efficiency in the present invention.
Description
Technical field
The present invention relates to embedded system control technology fields, more particularly to applied to the transmission side data of display screen system
Method and system.
Background technique
In LED display industry, LED display screen system is briefly made of LED screen body and control system, and LED is shown
Screen system is the control for completing to show LED screen body picture by control system；And user usually requires through host computer example
If PC machine carries out control instruction and display data transmission to control system, so in field of LED display, network data, serial ports
Data become critically important.Communication is serial ports or network between host computer in LED display synchronous control system, but is worked as
After embedded system enters LED display industry, there is pair of network and serial ports in the communication between control system and host computer
To communication, this data transmission scheme across transport protocol is just derivative and goes out.
Referring to Fig. 1, for the configuration diagram of the LED display asynchronous control system of connection host computer in the prior art.
Wherein, LED screen body receives the control of Asynchronism Card control system, and Asynchronism Card control system contains microprocessor module and display
Control module.It is run in microprocessor module embedded OS (such as android system) and logical with display control module
Cross serial ports and DVI interface connection.Host computer is connected by network with Asynchronism Card control system, and PC control software operates in
Position generator terminal, such user can be completed by the PC control software on operation host computer to the asynchronous control of LED display
The control of system processed.Herein, the flow direction for controlling data is that network is transmitted to serial ports and serial ports to network bi-directional.It is aobvious for LED
For display screen asynchronous control system, host computer does not need for good and all to connect with Asynchronism Card control system, only is needing to control
It is attached when LED display asynchronous control system；Control can disconnect host computer and asynchronous card control after completing
Connection between system；The display picture of LED screen body is exported by video interface such as DVI by microprocessor module and is controlled to display
Molding block.
Referring to fig. 2, show for the data transmission stream journey shown in Fig. 1 between host computer and LED display asynchronous control system
It is intended to.Since the broadcasting pictures of Asynchronism Card control system are determined by microprocessor module, so the picture that LED screen body is shown
It is not the picture that upper computer end plays, but the picture that oneself is played inside microprocessor module.Host computer is aobvious in control LED
When display screen asynchronous control system, need to send a large amount of control instruction to Asynchronism Card control system, it is also necessary to what transmission to be shown
Image content (or display data) carries out storage and off line broadcasting to Asynchronism Card control system and by microprocessor module；And it shows
Registration evidence needs not move through serial ports and is transferred to display control module.For data facilitating control instruction in transmission and show
For registration according to being transmitted according to same way, it is laggard that Asynchronism Card control system receives complete data packet (network packet)
Row unpacks the action type that data are distinguished with data analysis judgment, and microprocessor module can repack control instruction data
And display control module is sent to by serial ports.
From the foregoing, it will be observed that control instruction in the prior art and display data uniformly carry out send cannot achieve control instruction and
Show the concurrent of data；Furthermore each bag data requires to carry out parsing, and to will lead to data transmission efficiency very low.
Summary of the invention
Therefore, to overcome, the transmission of LED display asynchronous control system data in the prior art is slow, technology of low efficiency is asked
Topic, the present invention propose a kind of data transmission method applied to display screen system and a kind of data applied to display screen system
Transmission system.
Specifically, a kind of data transmission method applied to display screen system that the embodiment of the present invention proposes, wherein described
Display screen system includes control system and the display screen body for connecting the control system, and the control system includes microprocessor mould
Block connects the display control module of the microprocessor module with by serial ports.Furthermore the number applied to display screen system
According to transmission method comprising steps of (i) control system and host computer are established first network channel and connect and the second network channel
Connection；(ii) microprocessor module obtains the control instruction data from the host computer by the first network channel
And give using the control instruction data forwarding to the serial ports as serial data to the display control module, wherein the control
Director data processed is the order data for controlling the display screen system；And (iii) described microprocessor module passes through institute
It states the second network channel and obtains the display data from the host computer, wherein the display data are to supply the display screen system
Play the picture data of display.
In one embodiment of the invention, in step (i), the first network channel and second network channel
Share the same cable of the connection display screen system.
In one embodiment of the invention, step (ii) includes: that the microprocessor module passes through the first network
Detect whether the serial ports is opened after obtaining the control instruction data in channel；It is first beaten if detecting that the serial ports is not switched on
Open string mouth；And the control instruction data that will acquire after the serial ports opening are forwarded directly to the string without parsing
Mouthful.
In one embodiment of the invention, step (ii) and step (iii) can be carried out concurrently.
In one embodiment of the invention, the data transmission method applied to display screen system step (i) it
Before further comprise the steps of: the IP of the control system that host computer search is in same local area network with the host computer
Location；Correspondingly, step (i) be specially by the host computer using described search to IP address establish the control system and institute
The first network channel connection stated between host computer is connected with second network channel.
In one embodiment of the invention, the data transmission method applied to display screen system further comprises the steps of:
The microprocessor module is using the response data from the display control module obtained by the serial ports as network number
The host computer is sent to according to from the first network channel；And the microprocessor module is by the correspondence display data
Response data is sent to the host computer from second network channel as network data.
In addition, a kind of data transmission system applied to display screen system that the embodiment of the present invention proposes, including host computer
With the display screen system by being connected to the network the host computer, the display screen system includes control system and the connection control
The display screen body of system, the control system, which includes microprocessor module, connects the aobvious of the microprocessor module with by serial ports
Show control module.Furthermore the host computer is configured with control system search module, control instruction data generation module, display number
According to generation module and network data sending module, wherein the control system search module is in for searching for the host computer
The IP address of the control system in same local area network simultaneously establishes the using the IP address and target display screen system that search
The connection of one network channel is connected with the second network channel, and the control instruction data generation module will be for that will control target display screen
The control instruction of system is organized into the control instruction data that the control system can identify, the display data generation module is used for
Display picture is generated into corresponding display data, the network data sending module is used to the control instruction data passing through institute
It states first network channel and is sent to the target display screen system and for the display data to be passed through second network
Channel is sent to the target display screen system；And the microprocessor module is used to obtain institute from the first network channel
State control instruction data and after the serial ports opening control instruction data forwarding that will acquire to the serial ports as serial ports number
It send to the display control module, and for obtaining the display data from second network channel.
In one embodiment of the invention, the control system is Asynchronism Card control system, and the display screen body is
LED screen body.
In one embodiment of the invention, the display control module further passes through video interface and connects micro- place
Manage device module.
In one embodiment of the invention, the microprocessor module obtains described in the control instruction data and acquisition
Display data can be carried out concurrently.
From the foregoing, it will be observed that the embodiment of the present invention can be reached following one or more the utility model has the advantages that a) passing through reduction data
The efficiency of transmission of data needed for parsing and regrouping process Lifting Control System；And b) by improving data transmission efficiency, thus
Improve real-time of the display screen system in user's control operation.
Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become obvious.But it should know
Road, which is only the purpose design explained, not as the restriction of the scope of the present invention.It should also be noted that unless another
It points out outside, it is not necessary to which scale attached drawing, they only try hard to conceptually illustrate structure and process described herein.
Detailed description of the invention
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in detail.
Fig. 1 is the configuration diagram for connecting the LED display asynchronous control system of host computer in the prior art.
Fig. 2 is the data transmission stream journey figure shown in Fig. 1 between host computer and LED display asynchronous control system.
Fig. 3 is the control instruction data transmission stream journey schematic diagram in the embodiment of the present invention.
Fig. 4 is the display data transmissions flow diagram in the embodiment of the present invention.
Fig. 5 is operational flow diagram when host computer and Asynchronism Card control system carry out data transmission in the embodiment of the present invention.
Fig. 6 is the functional block diagram of PC control software in the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Specifically, the embodiment of the present invention uses the mode of Network Serial Port data penetration transmission, as shown in figure 3, for display screen control
Control instruction needed for system processed such as LED display asynchronous control system (such as shown in Fig. 1), the host computer in data transmission
Such as after PC machine sends Asynchronism Card control system by network channel A in the form of network data for control instruction, asynchronous control
System processed is received received network data after network data by microprocessor module by network channel A without data solution
It analyses and is forwarded directly to serial ports as serial data and is used for display control module, and the response data from display control module
It is transmitted after being sent by serial ports to microprocessor module as serial data as network data by network channel A to transmit
To host computer, such transmission mode reduces the parsing and judgement to control instruction data, accelerates the efficiency of transmission, still
This transparent transmission mode is mainly used for transmitting control instruction, for display data is passed by establishing network channel B
It is defeated, as shown in Figure 4.
Hold it is above-mentioned, in fig. 4, the upper position machine will show data in the form of network data (such as network packet) pass through network channel
B be transmitted to the microprocessor module in Asynchronism Card control system carry out storage and off line play, and microprocessor module feedback
The response data of corresponding display data also can be transmitted to upper computer end by network channel B in the form of network data.As for micro- place
When managing device module offline broadcasting display data, video interface such as DVI interface will be passed through and export corresponding data and control
Signal is to display control module.
By the transmission mode of Fig. 3 and control instruction data shown in Fig. 4 and display data it is known that the embodiment of the present invention
This transmission mode proposed compares with existing scheme: 1) original network transmission channels are divided into two by；2) is transmitted across
Journey reduces the parsing to data packet, greatly improves the efficiency of transmission；And 3) realize control instruction data and display data
Concurrent transmission, and do not interfere with each other.
In addition, referring to Fig. 5, the data transmission method of present invention is by host computer and Asynchronism Card control system
Cooperation is completed.Specifically:
A) PC control software of upper computer end searches in network the asynchronous control of (such as in same local area network) first
System processed initiates the network connection with Asynchronism Card control system after searching Asynchronism Card control system；Herein, upper computer end
It can be formed and be connected to the network with interchanger and one or more Asynchronism Card control systems, be also possible to different by a cable and one
It is direct-connected to walk card control system, naturally it is also possible to be to connect between Asynchronism Card control system and host computer or interchanger for wireless network
It connects；
B) network channel is established by the IP address and target Asynchronism Card control system of the Asynchronism Card control system searched
The connection of A, while also establishing the connection of network channel B；Herein, in the case of cable network connects, network channel A and network
Channel B is preferably the same cable for sharing connection Asynchronism Card control system；
It c), will by PC control software when the PC control software of user's operation upper computer end sends control instruction
Control instruction is organized into the data that Asynchronism Card control system can identify, and is sent using network channel A；Control herein refers to
Order is the order data for controlling display screen system；
D) after Asynchronism Card control system receives the data that network channel A is transmitted, Asynchronism Card is detected by microprocessor module
Whether the serial ports of control system is opened；
E) serial ports is first opened if detecting that software serial ports is not switched on, after serial ports is opened, the control that will directly receive
Serial ports is written in director data；
F) control instruction data enter display control module by serial ports, make to Asynchronism Card control system corresponding dynamic
Make；
If g) user's operation sends display data while step c), PC control software will show image content
Corresponding display data are generated, and carry out data transmission using network channel B；
H) the display data that network channel B is sent be can receive simultaneously in the Asynchronism Card control system of step d), and
And the display data received are subjected to storage and off line broadcasting by microprocessor module.
In addition, it is noted that PC control software above-mentioned can be divided into multiple functional modules, such as Fig. 6,
Comprising: which control system search module, control instruction data generation module, display data generation module and network data are sent
Module.Wherein, control system search module is used for the Asynchronism Card control system searched in network；Control instruction data generation module
For control instruction to be organized into the data that Asynchronism Card control system can identify；Display data generation module will be for that will show picture
Content generates corresponding display data；And network data sending module is for passing control instruction data by network channel A
It send to Asynchronism Card control system and for that will show that data are sent to Asynchronism Card control system by network channel B.
From the foregoing, it will be observed that the embodiment of the present invention can be reached following the utility model has the advantages that i) passing through the parsing and recombination for reducing data
The efficiency of transmission of data needed for process promotes Asynchronism Card control system；And ii) by improving data transmission efficiency, to improve
The real-time of display screen asynchronous control system when user's control operates.
Finally, it is noted that the data transmission method of present invention be not limited to apply it is aobvious in LED
Display screen asynchronous control system is also possible to other display screen systems such as LCD display system.Furthermore the transmission side of network data
Formula can be TCP/IP, be also possible to the network transmissions mode such as UDP.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of data transmission method applied to display screen system, wherein the display screen system includes control system and connection
The display screen body of the control system, the control system include that microprocessor module with by serial ports connects the microprocessor
The display control module of module；It is characterized in that, the data transmission method applied to display screen system comprising steps of
(i) control system and host computer establish that first network channel is connect and the second network channel connects；
(ii) microprocessor module obtains the control instruction data from the host computer by the first network channel
And it parses without data and directly send the control instruction data forwarding to the serial ports as serial data to described aobvious
Show control module, the control instruction data are transmitted in a manner of Network Serial Port data penetration transmission, wherein the control instruction data
For the order data for controlling the display screen system；And
(iii) microprocessor module obtains the display data from the host computer by second network channel,
Described in show data be for the display screen system play display picture data.
2. being applied to the data transmission method of display screen system as described in claim 1, which is characterized in that in step (i),
The first network channel and second network channel share the same cable of the connection display screen system.
3. being applied to the data transmission method of display screen system as described in claim 1, which is characterized in that step (ii) packet
Include: whether the microprocessor module detects the serial ports after obtaining the control instruction data by the first network channel
It opens；Serial ports is first opened if detecting that the serial ports is not switched on；And the control that will acquire after the serial ports opening
Director data is forwarded directly to the serial ports without parsing.
4. being applied to the data transmission method of display screen system as described in claim 1, which is characterized in that step (ii) and step
Suddenly (iii) can be carried out concurrently.
5. as described in claim 1 be applied to display screen system data transmission method, which is characterized in that step (i) it
Before further comprise the steps of: the IP of the control system that host computer search is in same local area network with the host computer
Location；Correspondingly, step (i) be specially by the host computer using described search to IP address establish the control system and institute
The first network channel connection stated between host computer is connected with second network channel.
6. being applied to the data transmission method of display screen system as described in claim 1, which is characterized in that further comprise the steps of:
The microprocessor module is using the response data from the display control module obtained by the serial ports as net
Network data are sent to the host computer from the first network channel；And
The microprocessor module leads to the response data of the correspondence display data as network data from second network
Road is sent to the host computer.
7. a kind of data transmission system applied to display screen system, including host computer and by being connected to the network the host computer
Display screen system, the display screen system include control system and the display screen body for connecting the control system, the control system
System includes the display control module that microprocessor module connects the microprocessor module with by serial ports；It is characterized in that,
The host computer configured with control system search module, control instruction data generation module, display data generation module and
Network data sending module, wherein the control system search module is in same local area network for searching for the host computer
The control system IP address and establish first network channel company using the IP address that searches and target display screen system
It connects and is connected with the second network channel, the control instruction data generation module is used to refer to the control for controlling target display screen system
Order is organized into the control instruction data that the control system can identify, the display data generation module will be for that will show that picture is raw
At corresponding display data, the network data sending module is for leading to the control instruction data by the first network
Road is sent to the target display screen system and for the display data to be sent to institute by second network channel
State target display screen system；And
The microprocessor module is used to obtain the control instruction data from the first network channel and beat in the serial ports
The control instruction data forwarding that parses after opening without data and directly will acquire is sent as serial data to institute to the serial ports
Display control module is stated, transmits the control instruction data in a manner of Network Serial Port data penetration transmission, and for from described the
Two network channels obtain the display data.
8. the use as claimed in claim 7 in the data transmission system of display screen system, which is characterized in that the control system
For Asynchronism Card control system, and the display screen body is LED screen body.
9. being applied to the data transmission system of display screen system as claimed in claim 8, which is characterized in that the display control
Module further passes through video interface and connects the microprocessor module.
10. the use as claimed in claim 7 in the data transmission system of display screen system, which is characterized in that the micro process
Device module obtains the control instruction data and obtains the display data and can concurrently carry out.
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| CN109686300A (en) * | 2019-01-23 | 2019-04-26 | 深圳市奥拓电子股份有限公司 | Command parameter transmission method, system and storage medium based on display data channel |
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Address after: 710075 DEF101, Zero One Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Nova Nebula Technology Co., Ltd. Address before: 710075 Qinfengge D District 401, Xi'an Software Park, 68 Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xian Novastar Electronic Technology Co., Ltd. |
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