CN105099844B - Media releasing method, media data acquisition methods and media issuing system - Google Patents
Media releasing method, media data acquisition methods and media issuing system Download PDFInfo
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- CN105099844B CN105099844B CN201510437552.3A CN201510437552A CN105099844B CN 105099844 B CN105099844 B CN 105099844B CN 201510437552 A CN201510437552 A CN 201510437552A CN 105099844 B CN105099844 B CN 105099844B
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Abstract
A kind of media releasing method, media data acquisition methods and media issuing system provided by the invention.The media releasing method includes: that (a) makes the RS232 interface of host computer establish connection via the second communication protocols converter of RS232/ with the RS232 interface of bus mode and multiple display control cards；And media data (b) is packaged into the data packet comprising target unique identifier and is exported from the RS232 interface of host computer, it is shown so that the display control card with the target unique identifier in the multiple display control card receives and processes the LED display that the media data is connected for drive control with the display control card with target unique identifier.Therefore, the invention enables users can be communicated by a host computer with for example single dual-colored LED display screen control card of multiple display control cards, and wiring is simple and convenient to operate, and display control card, which is articulated in bus, to carry out real time communication with PC machine.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of media releasing method, a kind of media data acquisition methods
And a kind of media issuing system.
Background technique
The mono- double-color display screen asynchronous control system block diagram of LED on LED display as shown in Figure 1, need in media to be shown
Appearance is to be configured according to self-demand by user by upper computer software, and host computer (PC machine) is by by media data
It is sent to display control card, then special effect processing is done to data by display control card, and is converted into aobvious with LED used by a user
The identical data format of display screen, data are exported to LED display.
At present on the market the common communication mode in relation to display control card be USB flash disk communication, serial communication, WIFI communicate, with
Too Network Communication.Wherein WIFI communicates display control card and ethernet communication display control card and communicates display control card relative to USB flash disk
Therefore just at present it can not replace USB flash disk communication display control card and serial ports with serial communication display control card higher cost
Communicate the market position of display control card.The advantage that USB flash disk communicates display control card is that program boot speed is fast, USB flash disk communication display
Control card, which does not need line with PC machine, to be communicated, it is disadvantageous that user every time need to be in computer with leading good program, then
It holds USB flash disk insertion USB flash disk communication display control card and imports program；Although serial communication display control card needs line, but hereafter use
Family need to only configure programme content before computer on software, click and send, and data will be automatically transferred to go here and there by RS232 serial ports
Port communications display control card is completed program and is sent.
The serial communication of display control card is using PC machine as main equipment, and serial communication display control card is used as from equipment.
That is, PC machine plays a leading role in entire serial ports transmission process, serial communication display control card is sent out according to PC machine always
The content sent makes corresponding response, and serial communication display control card actively will not send data to PC machine.Due to transmitting every time
Data volume be bigger, so PC machine will carry out subpackage processing by the data sent to serial communication display control card,
Data are sent to serial communication display control card in batches, until having sent last bag data, serial communication display control
Card obtains all data, then shows content according to data configuration, completes communication.
In the prior art, general serial communication display control card connects PC machine by RS232 serial ports transmission line, realizes a pair of
One communication, user prepare program by upper computer software, click send button, and data will pass through RS232 serial ports and be sent to serial ports
Communicate display control card.As shown in Fig. 2, being when PC machine sends data packet to serial communication display control card by RS232 serial ports
Guarantee that the data sent are correct, is typically necessary using means such as data checks, serial communication display control card receives
It to test to data after to data, and reply the whether correct response bag of data packet to PC machine, PC machine wraps determine according to response
It surely is to retransmit current data packet to be also to continue with the next data packet of transmission.
From the foregoing, it will be observed that the prior art uses one-to-one serial communication mode, that is to say, that a PC machine can only connect one
A serial communication display control card carries out point-to-point communication, if user possesses a lot of block LED displays, and needs multiple strings
Port communications display control card control, user constantly plug RS232 serial ports with an only PC machine during program and pass
Defeated line, process is fairly cumbersome, and the serial communication display control card that user uses is more, the RS232 serial ports transmission for needing to plug
Line is more, and is easy to produce mixed meat and fish dishes, brings very big inconvenience for user.
Summary of the invention
Therefore, to overcome defect and deficiency of the existing technology, the present invention provides a kind of media releasing method, a kind of matchmaker
Volume data acquisition methods and a kind of media issuing system.
Specifically, a kind of media releasing method proposed by the present invention, comprising steps of (a) meets a RS232 of host computer
Mouth establishes connection via the second communication protocols converter of RS232/ with the RS232 interface of bus mode and multiple display control cards；
And media data (b) is packaged into the data packet comprising target unique identifier and is connect from the RS232 of the host computer
Mouth output, so that the display control card in the multiple display control card with the target unique identifier receives and processes institute
State media data for drive control with have the LED display that is connected of display control card of the target unique identifier into
Row display.
In addition, a kind of media data acquisition methods that the embodiment of the present invention proposes, are applied to a RS232 of host computer
Interface connects multiple RS232 interfaces of multiple display control cards via RS232/ the second communication protocols converter with bus mode
Any one of display control card and comprising steps of uniquely marking comprising target from the host computer (i) is received in system
The data packet of knowledge number；(ii) it parses the target unique identifying number in the data packet and judges that the target is uniquely marked
Whether knowledge number matches with the unique identifying number of itself；(iii) if the unique identifying number of the target unique identifying number and itself
Matching carries out verification to the data packet and generates response bag after the completion of verification to export to the host computer；And (iv) is such as
Target unique identifying number described in fruit and the unique identifying number of itself mismatch, and abandon the data packet.
In addition, a kind of media issuing system that the embodiment of the present invention proposes, including a host computer, multiple display control cards
And the multiple LED displays being separately connected with the multiple display control card.One RS232 interface of the host computer via
The second communication protocols converter of RS232/ connects multiple RS232 interfaces of the multiple display control card with bus mode.
From the foregoing, it will be observed that the embodiment of the present invention allows user to pass through a host computer such as PC machine and multiple display controls
Card such as list dual-colored LED display screen control card is communicated, and wiring is simple and convenient to operate, and PC machine is once controlled with corresponding display
Matching relationship is established in fabrication, and display control card, which is articulated in bus, to carry out real time communication with PC machine.
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, this is because it should refer to
Appended claims.It should also be noted that unless otherwise noted, it is not necessary to which scale attached drawing, they only try hard to concept
Ground illustrates 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 a kind of mono- double-color display screen asynchronous control system block diagram of LED.
Serial communication transmission mode schematic diagram of the Fig. 2 between PC machine and display control card.
A kind of PC machine of Fig. 3 embodiment of the present invention connects the system architecture signal of multiple display control cards with bus mode
Figure.
Another PC machine of Fig. 4 embodiment of the present invention connects the system architecture signal of multiple display control cards with bus mode
Figure.
A kind of display control card of Fig. 5 embodiment of the present invention obtains the flow chart of media data.
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.
Present invention is primarily intended to realize by a RS232 serial ports of a PC machine (a kind of form of host computer) come with
Multiple serial communication display control cards are communicated, i.e., complete multiple serial communication display control cards by a RS232 serial ports
With the data interaction of PC machine, and guarantee that PC machine carries out in communication process with wherein any one serial communication display control card,
He will not be interfered at serial communication display control card.Certainly, the number of multiple serial communication display control cards and PC machine here
Refer to that multiple serial communication display control cards and PC machine tdm communication, i.e. synchronization or PC machine and a serial ports are logical according to interaction
Letter display control card is communicated.
Hold above-mentioned, since the RS232 serial communication protocol in PC machine is usually point-to-point communication, and transmission range is short,
In the following embodiments of the present invention, in order to improve the adaptability of serial communication, reduce environmental restrictions, PC machine and display control card it
Between can do data-signal conversion, i.e. RS232 turns RS485, and data transmission efficiency can be greatly improved.Specifically, in following implementations
In example, the RS232 serial ports of PC machine (generally includes RS232 interface and RS485 interface and connection through RS232/RS485 converter
Communication protocol conversion circuit therebetween) after formed and connect with bus mode and multiple 1~n of display control card, and with total
The implementation that line mode and multiple 1~n of display control card form connection will be carried out detailed with Fig. 3 and two examples shown in Fig. 4
It describes in detail bright.
Fig. 3 is referred to, the RS232 serial ports of PC machine 31 connects the RS232/RS485 on pinboard 33 by RS232 transmission line
Converter 330, then be extended to obtain multiple RS485 by RS485 interface of the pinboard 33 to RS232/RS485 converter 330
Then 1~n of each RS485 interface is passed through a plurality of RS485 transmission line and corresponding multiple RS232/ by 1~n of interface respectively
1~n of RS485 converter is connected to the RS232 interface on corresponding 1~n of display control card, to realize one in PC machine 31
A RS232 serial ports is formed with bus mode and multiple 1~n of display control card after communication Protocol Conversion and is connected.
Fig. 4 is referred to, the RS232 serial ports of PC machine 51 connects RS232/RS485 converter 53 by RS232 transmission line, then
Display control card 1 is connected to by the RS232/RS485 converter 550 on pinboard 1 by RS232/RS485 converter 53
RS232 interface, the RS485 interface 552 expanded on pinboard 1 connect the RS232/RS485 converter 550 on pinboard 1
RS485 interface；RS232/RS485 converter 550 on pinboard 2 connects the RS485 interface 552 expanded on pinboard 1 simultaneously
The RS485 interface 552 for being connected to the RS232 interface of display control card 2, and expanding on pinboard 2 connects on pinboard 2
The RS485 interface of RS232/RS485 converter 550；And so on, it is formed between each 1~n of adapter and cascades and be separately connected
To the RS232 interface of 1~n of display control card；To realize a RS232 serial ports in PC machine 51 after communication Protocol Conversion with
Bus mode and multiple 1~n of display control card, which are formed, to be connected.
Below in conjunction with Fig. 5 to a RS232 serial ports of the PC machine of the embodiment of the present invention after RS232/RS485 converter
The course of work for the media issuing system that multiple 1~n of display control card are constituted is connected with bus mode and principle carries out in detail
Explanation.
In the present embodiment, each 1~n of display control card is for example burned No. SN corresponding (or unique when leaving the factory
Identification code), and No. SN back side that 1~n of display control card can be also attached in a manner of labeling, every display control card, which has, to be belonged to
Oneself No. SN, No. SN does not repeat.PC machine carries out data communication in the multiple 1~n of display control card connecting with bus mode
When, which display control card exactly judge currently to communicate with PC machine by No. SN is.Therefore, PC machine is sending out number each
The display control card such as display control card n that the data packet to be sent to can all be added in the packet header of data packet when according to packet
No. SN, display control card n will similarly be added No. SN of display control card n to the response bag that PC machine is returned, so that PC machine can
It is the response bag which display control card n is returned with judgement.
Typically, each bag data (either data packet, order packet or response bag) of serial communication includes 3 portions
Point, it is respectively: packet header, data content, verification data.Wherein, the contents attribute in packet header comprising the bag data, data volume size
Etc. information, also include No. SN of target display control card, the essence that serial bus mode communicates is exactly to pass through to judge data packet packet
No. SN in head is sat in the right seat to data packet.It is described more fully below and how to implement serial bus mode and communicate, specifically
Ground:
Firstly, the upper computer software in PC machine obtains No. SN of each 1~n of display control card so that upper computer software with
Multiple 1~n of display control card establish matching relationship.In addition, to increase operation ease, it can be right on upper computer software interface
Each 1~n of display control card is named and associates with its No. SN, in this way, choosing some name can when user's operation
With so indirect that choose corresponding display control card, name herein can be serial number, installation site etc..It is worth mentioning
, the step of obtaining the SN of each 1~n of display control card can be by the RS232 serial ports in PC machine through communication protocol
It is carried out before or after forming connection with each 1~n of display control card with bus mode after conversion.
Next, when user chooses some display control card to send media data on upper computer software, then it is corresponding
That display control card will receive and process data transmitted by software to be used to drive control LED display connected to it
It is shown, and responds upper computer software.Such as user selects display control card n, after preparing media content, clicks to send and press
Button, media data can be sent by the RS232 interface in PC machine after communication Protocol Conversion with bus mode, due to all
1~n of display control card be all connected to bus, so every display control card can all receive host computer transmission this data
Packet, and every 1~n of display control card can parse the bag data, can analyze No. SN in packet header first,
Since the data packet that upper computer software is sent is directed to display control card n, SN affirmative and display in packet header are controlled
No. SN matching of fabrication n, therefore display control card n has received and processed the data packet, then can send response bag to PC machine,
His display control card receives data, by the parsing to packet header SN, finds the mismatch of SN and itself, then it is assumed that the packet
Data are not intended for oneself, thus abandon the data packet, and be not responding to host computer.Similarly, display control card n is sent out to PC machine
When sending response bag, due to other display control card shared bus, other display control cards equally will receive the response bag, but same
Sample is because No. SN mismatches and be not responding to.
When PC machine and display control card n carry out data communication, as shown in figure 5, belonging to certainly when display control card n is received
After oneself data packet (namely judge SN matching after), the data content in the data packet received verify and and data packet
In verification data be compared it is whether correct to judge data check, if data check is correct, to PC send response bag
To notify PC machine that can give a data packet；If check errors, equally response bag can be sent to PC machine, only response bag
It is that notice PC machine data packet is wrong, needs to retransmit current data packet.And for other display control cards, it receives at this time
No. SN in data packet and the SN mismatch of itself, therefore data are abandoned, and do not respond.Later, when the media number of PC machine
According to being sent, a tail bag data can be sent to display control card n, display control card n, media data is told to send
Finish.Hereafter, user can carry out serial communication by the upper computer software and other display control cards of PC machine.
In conclusion due to the embodiment of the present invention allow user by a PC machine and multiple display control cards for example
Single dual-colored LED display screen control card is communicated, and wiring is simple and convenient to operate, and PC machine is once built with corresponding display control card
Vertical matching relationship, display control card, which is articulated in bus, to carry out real time communication with PC machine.Theoretically, logical based on RS485
The extension of user can be greatly enriched, can satisfy user completely in the bus of agreement with 256 display control cards of carry by believing
The demand of more card applications.
Finally, it is noted that the above embodiment of the present invention is that the RS232 serial ports of PC machine is connected RS232/RS485
Connection is established with bus mode and multiple display control cards again after converter, but the present invention is not limited thereto, such as will herein
RS232/RS485 converter be substituted for RS232/ ether network switch, to realize that RS232 communication protocol and ethernet communication are assisted
Conversion between view；Correspondingly, subsequent in order to be connect with the RS232 interface of each display control card, it is also necessary to configure RS232/
Ether network switch carries out the conversion between ethernet communication protocol and RS232 again.It is understood that RS232 is converted to
The purpose of RS285 or ethernet communication protocol is the transmission range in order to increase data, so those skilled in the art can be with
RS232 is converted into other communication protocols, as long as these purposes can be reached.
So far, specific case used herein to media releasing method of the invention, media data acquisition methods and
The principle and embodiment of media issuing system is expounded, the present invention that the above embodiments are only used to help understand
Method and its core concept；At the same time, for those skilled in the art is being embodied according to the thought of the present invention
There will be changes in mode and application range, in conclusion the contents of this specification are not to be construed as limiting the invention,
Protection scope of the present invention should be subject to the attached claims.
Claims (4)
1. a kind of media releasing method, which is characterized in that comprising steps of
(a) make a RS232 interface of host computer via RS232/RS485 converter with bus mode and multiple display control cards
RS232 interface establish connection；Wherein, described to be built with bus mode and multiple RS232 interfaces of the multiple display control card
The implementation of vertical connection are as follows: the RS232 interface of the host computer connects the RS232/ by RS232 transmission line
RS485 converter, the RS232/RS485 converter connect first in cascade multiple pinboards by RS485 transmission line
RS232/RS485 converter on grade pinboard, is additionally provided with the RS232/ being connected thereto on each described pinboard
One of RS485 converter extension RS485 interface be used to cascade the RS232/RS485 converter on next stage pinboard with
Realize the cascade with the next stage pinboard, and the RS232/RS485 converter on the multiple pinboard connects respectively
Connect the multiple RS232 interface of the multiple display control card；And
(b) media data is packaged into the data packet comprising target unique identifier and is connect from the RS232 of the host computer
Mouth is sent after communication Protocol Conversion with bus mode, for being connected to have in the multiple display control card of bus
The target display control card of the target unique identifier receives the media data by the RS232 interface thereon and locates
It manages the media data and is used for the LED that drive control is connected with the target display control card with the target unique identifier
Display screen is shown, wherein the target unique identifier is the institute that user chooses on the upper computer software of the host computer
State the unique identifier of target display control card；
The media releasing method, which is further comprised the steps of:, obtains the unique of the multiple display control card by the upper computer software
Identification code, so that the upper computer software and the multiple display control card establish matching relationship.
2. a kind of media data acquisition methods, which is characterized in that the media data acquisition methods are applied to one of host computer
RS232 interface is with the multiple RS232 interfaces that bus mode connects multiple display control cards via RS232/RS485 converter
The RS232 interface of any one of display control card in system, the host computer passes through described in the connection of RS232 transmission line
RS232/RS485 converter, the RS232/RS485 converter are connected in cascade multiple pinboards by RS485 transmission line
First order pinboard on RS232/RS485 converter, be additionally provided on each described pinboard be connected thereto it is described
The RS232/RS485 that one extension RS485 interface of RS232/RS485 converter is used to cascade on next stage pinboard turns
Parallel operation is to realize the cascade with the next stage pinboard, and the RS232/RS485 converter on the multiple pinboard
Be separately connected the multiple RS232 interface of the multiple display control card, and the media data acquisition methods comprising steps of
(i) data packet comprising target unique identifying number from the host computer is received by itself upper RS232 interface,
Wherein the target unique identifier is the multiple display control that user chooses on the upper computer software of the host computer
The unique identifier of target display control card in card；The unique identifier of the multiple display control card passes through the host computer
Software obtains, so that the upper computer software and the multiple display control card establish matching relationship；
(ii) it parses the target unique identifying number in the data packet and judges the target unique identifying number and itself
Unique identifying number whether match；
(iii) if the target unique identifying number is matched with the unique identifying number of itself, the data packet is verified simultaneously
Response bag is generated after the completion of verification to export to the host computer；And
(iv) if the target unique identifying number and the unique identifying number of itself mismatch, the data packet is abandoned.
3. media data acquisition methods as claimed in claim 2, which is characterized in that in step (iii), if verification is just
Really, response bag is generated to notify the host computer to send next data packet；If check errors, response bag is generated to notify
It states host computer and retransmits current data packet.
4. a kind of media issuing system, including a host computer, multiple display control cards and with the multiple display control card
The multiple LED displays being separately connected；It is characterized in that, a RS232 interface of the host computer is connected by RS232 transmission line
RS232/RS485 converter is connect, the RS232/RS485 converter connects cascade multiple pinboards by RS485 transmission line
In first order pinboard on RS232/RS485 converter, be additionally provided with the institute being connected thereto on each described pinboard
An extension RS485 interface for stating RS232/RS485 converter is used to cascade the RS232/RS485 on next stage pinboard
Converter is to realize the cascade with the next stage pinboard, and the RS232/RS485 conversion on the multiple pinboard
Device is separately connected multiple RS232 interfaces of the multiple display control card, and final realize meets the RS232 of the host computer
Mouth establishes connection via the RS232/RS485 converter with the RS232 interface of bus mode and the multiple display control card；
Wherein, the media issuing system is for executing media releasing method as described in claim 1.
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| CN201510437552.3A CN105099844B (en) | 2015-07-23 | 2015-07-23 | Media releasing method, media data acquisition methods and media issuing system |
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| CN201510437552.3A CN105099844B (en) | 2015-07-23 | 2015-07-23 | Media releasing method, media data acquisition methods and media issuing system |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105426023A (en) * | 2015-12-31 | 2016-03-23 | 田雪松 | Information interaction method and system |
| CN105704206B (en) * | 2015-12-31 | 2019-01-18 | 西安诺瓦电子科技有限公司 | The implementation method of ethernet communication is carried out with LED display control card |
| CN107104865B (en) * | 2017-04-07 | 2020-08-18 | 惠州市天泽盈丰物联网科技股份有限公司 | RS485 bus-based background extension method and system |
| CN107171917B (en) * | 2017-04-07 | 2020-11-03 | 惠州市天泽盈丰物联网科技股份有限公司 | RS485 bus capacity expansion-based network |
| CN109256084B (en) * | 2018-10-29 | 2023-11-14 | 深圳市摩西尔电子有限公司 | Cascade LED display screen control card, control method for realizing cascade connection and HDMI signal processing method |
| CN111464325B (en) * | 2019-01-22 | 2022-12-09 | 西安诺瓦星云科技股份有限公司 | Configuration method, configuration device and configuration system for embedded control card |
| CN111694527A (en) * | 2019-03-13 | 2020-09-22 | 西安诺瓦电子科技有限公司 | Display control method and system, display control card and data updating card |
| WO2020198903A1 (en) * | 2019-03-29 | 2020-10-08 | 西安诺瓦电子科技有限公司 | Display control system and program updating system |
| CN114724495B (en) * | 2020-12-22 | 2024-10-18 | 西安诺瓦星云科技股份有限公司 | Image sending method, device, display controller and display control system |
| CN113377583B (en) * | 2021-06-30 | 2024-07-12 | 西安诺瓦星云科技股份有限公司 | Display screen controller backup method, device and system |
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