CN105099844A - Media release method, media data acquisition method and media release system - Google Patents
Media release method, media data acquisition method and media release system Download PDFInfo
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- CN105099844A CN105099844A CN201510437552.3A CN201510437552A CN105099844A CN 105099844 A CN105099844 A CN 105099844A CN 201510437552 A CN201510437552 A CN 201510437552A CN 105099844 A CN105099844 A CN 105099844A
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Abstract
The invention provides a media release method, a media data acquisition method and a media release system. The media release method comprises the following steps that (a) an RS232 interface of an upper computer establishes connection with RS232 interfaces of a plurality of display control cards via an RS232/second communication protocol converter as a bus mode; (b) media data is packed into a data packet containing a target unique identifier, and the data packet is output from the RS232 interface of the upper computer so that the display control card possessing the target unique identifier in the plurality of display control cards receives and processes, and the media data is used for driving a LED display screen to display and controlling the LED display screen display, wherein the LED display screen is connected to the display control card possessing the target unique identifier. By using the methods and the system of the invention, the user can communicates with the plurality of display control cards through one upper computer, such as a single and double color LED display screen control card; wiring is simple and operation is convenient; the display control cards are connected to a bus so that real-time communication with a PC can be performed.
Description
Technical field
The present invention relates to Display Technique field, particularly a kind of media releasing method, a kind of media data acquisition methods and a kind of media issuing system.
Background technology
LED mono-double-color display screen asynchronous control system block diagram as shown in Figure 1, LED display need the media content shown be pass through upper computer software by user, configure according to self-demand and to obtain, host computer (PC) is by sending to display control card by media data, by display control card, special effect processing is done to data again, and convert the data format identical with the LED display that user uses to, export data to LED display.
At present on the market about the conventional communication mode of display control card is USB flash disk communication, serial communication, WIFI communication, ethernet communication.Wherein WIFI communicate display control card and ethernet communication display control card relative to USB flash disk communicate display control card and serial communication display control card cost higher, therefore just at present, the market position of USB flash disk communication display control card and serial communication display control card can not be replaced.The advantage of USB flash disk communication display control card is that program boot speed is fast, USB flash disk communication display control card does not need line to communicate with PC, but unfortunately, user need lead program in front of computer at every turn, then hold USB flash disk and inserted USB flash disk communication display control card importing program; Although serial communication display control card needs line, after this user only before computer, software need configure programme content, and click and send, data will pass to serial communication display control card automatically by RS232 serial ports, complete program sending.
The serial communication of display control card is using PC as main equipment, and serial communication display control card is as from equipment.That is, in whole Serial Port Transmission process, PC plays a leading role, and the content that serial communication display control card sends according to PC all the time makes corresponding response, and serial communication display control card initiatively can not send data to PC.Because the data volume transmitted is larger at every turn, so PC will carry out subpackage process by the data sent to serial communication display control card, send to serial communication display control card by data in batches, until send last bag data, serial communication display control card obtains all data, then according to data configuration displaying contents, communication is completed.
In prior art, general serial communication display control card connects PC by RS232 Serial Port Transmission line, and realize One-to-one communication, user prepares program by upper computer software, click and send button, data are just sent to serial communication display control card by RS232 serial ports.As shown in Figure 2, when PC sends packet by RS232 serial ports to serial communication display control card, correct in order to ensure the data sent, generally all need to adopt the means such as such as data check, to test to data after serial communication display control card receives data, and reply the whether correct respond packet of packet to PC, PC determines to resend current data packet or continue to send next packet according to respond packet.
As from the foregoing, prior art adopts man-to-man serial communication mode, that is a PC can only connect a serial communication display control card, carry out point-to-point communication, if user has had polylith LED display, and need multiple serial communication display and control card control, user joins the words only having a PC in program process, constantly will plug RS232 Serial Port Transmission line, flow process quite bothers, and the serial communication display control card that user uses is more, need the RS232 Serial Port Transmission line of plug more, and easily produce mixed meat and fish dishes, for user brings very big inconvenience.
Summary of the invention
Therefore, for overcoming defect and the deficiency of prior art existence, the invention provides a kind of media releasing method, a kind of media data acquisition methods and a kind of media issuing system.
Particularly, a kind of media releasing method that the present invention proposes, comprises step: (a) makes host computer RS232 interface connect with the RS232 interface of bus mode and multiple display control card via RS232/ second communication protocol converter; And media data is packaged into the packet that comprises target unique identifier and exports from the described RS232 interface of described host computer by (b), receive for the display control card in described multiple display control card with described target unique identifier and process the LED display that described media data is connected with the display control card with described target unique identifier for drived control and show.
In addition, a kind of media data acquisition methods that the embodiment of the present invention proposes, its RS232 interface being applied to host computer connects display control card described in any one in the system of multiple RS232 interfaces of multiple display control card and comprises step with bus mode via RS232/ second communication protocol converter: (i) receives the packet comprising target unique identifying number from described host computer; (ii) parse the described target unique identifying number in described packet and judge whether described target unique identifying number mates with the unique identifying number of self; (iii) if described target unique identifying number mates with the unique identifying number of self, described packet is verified and after verification completes, generates respond packet and export to described host computer; And (iv) be not if described target unique identifying number mates with the unique identifying number of self, abandons described packet.
In addition, a kind of media issuing system that the embodiment of the present invention proposes, the multiple LED displays comprising a host computer, multiple display control card and be connected respectively with described multiple display control card.A RS232 interface of described host computer connects multiple RS232 interfaces of described multiple display control card with bus mode via RS232/ second communication protocol converter.
As from the foregoing, the embodiment of the present invention makes user can be communicated with multiple display control card such as single dual-colored LED display screen control card by a host computer such as PC, connect up simple, easy to operate, display control card, once set up matching relationship with corresponding display control card, is articulated in bus and can carries out real time communication with PC by PC.
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is a kind of LED mono-double-color display screen asynchronous control system block diagram.
Fig. 2 is the serial communication transmission means schematic diagram between PC and display control card.
A kind of PC of Fig. 3 embodiment of the present invention connects the system architecture schematic diagram of multiple display control card with bus mode.
The another kind of PC of Fig. 4 embodiment of the present invention connects the system architecture schematic diagram of multiple display control card with bus mode.
A kind of display control card of Fig. 5 embodiment of the present invention obtains the flow chart of media data.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Main purpose of the present invention realizes being communicated with multiple serial communication display control card by a RS232 serial ports of a PC (a kind of form of host computer), namely the data interaction of multiple serial communication display control card and PC is completed by a RS232 serial ports, and ensureing that PC and wherein any one serial communication display control card carry out in communication process, other serial communication display control cards can not be interfered.Certainly, multiple serial communication display control card here and the data interaction of PC refer to multiple serial communication display control card and PC tdm communication, i.e. synchronization or PC communicates with a serial communication display control card.
Hold above-mentioned, because the RS232 serial communication protocol on PC is generally point-to-point communication, and transmission range is short, state under the invention in embodiment, in order to improve the adaptability of serial communication, reducing environmental limitations, data-signal conversion can be done between PC and display control card, namely RS232 turns RS485, greatly can improve data transmission efficiency.Particularly, in the following embodiments, the RS232 serial ports of PC to be formed with multiple display control card 1 ~ n with bus mode and is connected after RS232/RS485 transducer (communication protocol conversion circuit generally including RS232 interface and RS485 interface and be connected between the two), and forms with multiple display control card 1 ~ n the implementation be connected with bus mode and be described in detail with the example of two shown in Fig. 3 and Fig. 4.
Refer to Fig. 3, the RS232 serial ports of PC 31 connects the RS232/RS485 transducer 330 on keyset 33 by RS232 transmission line, carry out expansion by the RS485 interface of keyset 33 pairs of RS232/RS485 transducers 330 again and obtain multiple RS485 interface 1 ~ n, then each RS485 interface 1 ~ n is connected to the RS232 interface on corresponding display control card 1 ~ n respectively by many RS485 transmission lines and corresponding multiple RS232/RS485 transducer 1 ~ n, thus the RS232 serial ports realized on PC 31 to be formed with multiple display control card 1 ~ n with bus mode and is connected after communication Protocol Conversion.
Refer to Fig. 4, the RS232 serial ports of PC 51 connects RS232/RS485 transducer 53 by RS232 transmission line, be connected to the RS232 interface of display control card 1 again by the RS232/RS485 transducer 550 on keyset 1 by RS232/RS485 transducer 53, the RS485 interface 552 that keyset 1 expands connects the RS485 interface of the RS232/RS485 transducer 550 on keyset 1; RS232/RS485 transducer 550 on keyset 2 connects RS485 interface 552 that keyset 1 expands and is connected to the RS232 interface of display control card 2, and the RS485 interface 552 that keyset 2 expands connects the RS485 interface of the RS232/RS485 transducer 550 on keyset 2; By that analogy, the RS232 interface that cascade is also connected to display control card 1 ~ n is respectively formed between each adapter 1 ~ n; Thus the RS232 serial ports realized on PC 51 to be formed with multiple display control card 1 ~ n with bus mode and is connected after communication Protocol Conversion.
Below in conjunction with Fig. 5 with bus mode, the course of work of the media issuing system that multiple display control card 1 ~ n is formed is connected to the PC of the embodiment of the present invention RS232 serial ports after RS232/RS485 transducer and principle is described in detail.
In the present embodiment, each display control card 1 ~ n is such as burned when dispatching from the factory corresponding No. SN (or claiming exclusive identification code), and No. SN back side that also can be attached to display control card 1 ~ n in the mode of labeling, often opening display control card has one's own No. SN, and No. SN is not repeated.By No. SN, PC, when the multiple display control card 1 ~ n be connected with bus mode carry out data communication, judges that current which display control card what communicate with PC be exactly.Therefore, PC is sending out when each packet No. SN that can add the display control card such as display control card n that this packet will be sent in the packet header at packet, display control card n will add No. SN of this display control card n too to the respond packet that PC returns, thus PC can judge the respond packet which display control card n returns.
Typically, each bag data (no matter be packet, order bag or respond packet) of serial communication comprise 3 parts, respectively: packet header, data content, checking data.Wherein, comprise the information such as the contents attribute of these bag data, data volume size in packet header, also comprise No. SN of target display control card, the essence that serial bus mode communicates is exactly by judging that No. SN in packet header is sat in the right seat to packet.To describe how specific implementation serial bus mode communicates below in detail, particularly:
First, the upper computer software on PC obtains No. SN of each display control card 1 ~ n, sets up matching relationship to make upper computer software and multiple display control card 1 ~ n.In addition, for increasing operation ease, can on upper computer software interface, carry out name to each display control card 1 ~ n and associate with its No. SN, like this, choose certain name just indirectly can must choose corresponding display control card during user operation, name herein can be serial number, installation site etc.It is worth mentioning that, the step obtaining No. SN of each display control card 1 ~ n can be the RS232 serial ports on PC is formed with bus mode and each display control card 1 ~ n after communication Protocol Conversion be connected before or after carry out.
Next, when user chooses certain display control card to send media data on upper computer software, that then corresponding display control card will receive and the data that send of process software show to be used for the connected LED display of drived control, and responds upper computer software.Such as user selects display control card n, after preparing media content, click and send button, media data can be sent with bus mode after communication Protocol Conversion by the RS232 interface on PC, because all display control card 1 ~ n are connected to bus, so often open this packet that display control card all can receive host computer transmission, and often open display control card 1 ~ n all to resolve these bag data, first No. SN in packet header can be analyzed, because the packet of upper computer software transmission is for display control card n, No. SN coupling of the SN affirmative in packet header and display control card n, therefore display control card n receives and processes this packet, then respond packet can be sent to PC, other display control card receives data, by the parsing to No. SN, packet header, discovery SN does not mate with self, then think that these bag data do not issue oneself, thus this packet is abandoned, and do not respond host computer.In like manner, when display control card n sends respond packet to PC, due to other display control card shared bus, other display control cards can receive this respond packet equally, but same because No. SN does not mate and do not respond.
When PC and display control card n carry out data communication, as shown in Figure 5, after display control card n receives one's own packet (after also namely judging SN coupling), carry out to the data content in the packet received the checking data verified also and in packet to compare to judge that whether data check is correct, if data check is correct, then send respond packet to notify that PC can give a packet to PC; If check errors, can send respond packet equally to PC, just respond packet is that notice PC packet is wrong, needs to resend current data packet.And for other display control cards, No. SN in the packet now received does not mate with the SN of self, therefore abandon data, and do not respond.Afterwards, when the media data of PC is sent, can send tail bag data to display control card n, tell display control card n, media data is sent.After this, user can carry out serial communication by the upper computer software of PC and other display control card.
In sum, because the embodiment of the present invention makes user can be communicated with multiple display control card such as single dual-colored LED display screen control card by a PC, connect up simple, easy to operate, display control card, once set up matching relationship with corresponding display control card, is articulated in bus and can carries out real time communication with PC by PC.In theory, based on can carry 256 display control cards in the bus of RS485 communication protocol, greatly enrich the expansion of user, the demand that user Duo Ka applies can have been met completely.
Finally, it is worth mentioning that, the above embodiment of the present invention connects with bus mode and multiple display control card after the RS232 serial ports of PC is connected RS232/RS485 transducer again, but the present invention is not as limit, such as RS232/RS485 transducer is herein replaced to RS232/ Ethernet transducer, to realize the conversion between RS232 communication protocol and ethernet communication protocol; Correspondingly, follow-up in order to be connected with the RS232 interface of each display control card, also need to configure the conversion that RS232/ Ethernet transducer carries out between ethernet communication protocol and RS232 again.Be understandable that, object RS232 being changed into RS285 or ethernet communication protocol is the transmission range in order to increase data, so those skilled in the art can also convert RS232 to other communication protocol, as long as can reach these objects.
So far, apply specific case herein to set forth the principle of media releasing method of the present invention, media data acquisition methods and media issuing system and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (9)
1. a media releasing method, is characterized in that, comprises step:
A () makes host computer RS232 interface connect with the RS232 interface of bus mode and multiple display control card via RS232/ second communication protocol converter; And
B media data is packaged into the packet that comprises target unique identifier and exports from the described RS232 interface of described host computer by (), receive and process the LED display that described media data is connected with the display control card with described target unique identifier for drived control to show for the display control card in described multiple display control card with described target unique identifier.
2. media releasing method as claimed in claim 1, it is characterized in that, described RS232/ second communication protocol converter is RS232/RS485 transducer.
3. a media data acquisition methods, it is characterized in that, the RS232 interface that described media data acquisition methods is applied to host computer connects display control card described in any one in the system of multiple RS232 interfaces of multiple display control card and comprises step with bus mode via RS232/ second communication protocol converter:
I () receives the packet comprising target unique identifying number from described host computer;
(ii) parse the described target unique identifying number in described packet and judge whether described target unique identifying number mates with the unique identifying number of self;
(iii) if described target unique identifying number mates with the unique identifying number of self, described packet is verified and after verification completes, generates respond packet and export to described host computer; And
(iv) if described target unique identifying number does not mate with the unique identifying number of self, described packet is abandoned.
4. media data acquisition methods as claimed in claim 3, is characterized in that, in step (iii), if verification is correct, generates respond packet to notify that described host computer sends next packet; If check errors, generate respond packet to notify that described host computer resends current data packet.
5. media data acquisition methods as claimed in claim 3, it is characterized in that, described RS232/ second communication protocol converter is RS232/RS485 transducer.
6. a media issuing system, the multiple LED displays comprising a host computer, multiple display control card and be connected respectively with described multiple display control card; It is characterized in that, a RS232 interface of described host computer connects multiple RS232 interfaces of described multiple display control card with bus mode via RS232/ second communication protocol converter.
7. media issuing system as claimed in claim 6, it is characterized in that, described RS232/ second communication protocol converter is RS232/RS485 transducer.
8. media issuing system as claimed in claim 7, it is characterized in that, the described implementation connecting multiple RS232 interfaces of described multiple display control card with bus mode is: the described RS232 interface of described host computer connects the described RS232/RS485 transducer be positioned on keyset by RS232 transmission line, described keyset is also provided with the multiple expansion RS485 interfaces connecting described RS232/RS485 transducer, and described multiple expansion RS485 interface is connected described multiple RS232 interfaces of described multiple display control card with multiple RS232/RS485 transducer respectively by many RS485 transmission lines.
9. media issuing system as claimed in claim 7, it is characterized in that, the described implementation connecting multiple RS232 interfaces of described multiple display control card with bus mode is: the described RS232 interface of described host computer connects described RS232/RS485 transducer by RS232 transmission line, described RS232/RS485 transducer connects the RS232/RS485 transducer on the first order keyset in multiple keysets of cascade by RS485 transmission line, keyset described in each is also provided with an expansion RS485 interface of the described RS232/RS485 transducer connected on it for cascade next stage adapter, and the described RS232/RS485 transducer on described multiple keyset connects described multiple RS232 interfaces of described multiple display control card respectively.
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| CN107104865A (en) * | 2017-04-07 | 2017-08-29 | 惠州市天泽盈丰物联网科技股份有限公司 | A kind of backstage extended method and its system based on RS485 buses |
| CN107171917A (en) * | 2017-04-07 | 2017-09-15 | 惠州市天泽盈丰物联网科技股份有限公司 | A kind of network based on RS485 bus dilatations |
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| 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 |
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| CN114724495A (en) * | 2020-12-22 | 2022-07-08 | 西安诺瓦星云科技股份有限公司 | Image sending method, image sending device, display controller and display control system |
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| 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 |
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| CN112020846B (en) * | 2019-03-29 | 2022-05-20 | 西安诺瓦星云科技股份有限公司 | Display control system and program update system |
| CN114724495A (en) * | 2020-12-22 | 2022-07-08 | 西安诺瓦星云科技股份有限公司 | Image sending method, image sending device, display controller and display control system |
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| CN105099844B (en) | 2019-07-16 |
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