CN103389889B - The safe player method of LED display and Video Controller - Google Patents
The safe player method of LED display and Video Controller Download PDFInfo
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Abstract
The present invention relates to the safe player method of LED display and Video Controller, described method comprises step: the communication interface to Video Controller transmits the first identifying code, and the first identifying code comprises the information of the condition code of unique identification playing device; Playing device carries the image data stream of the second identifying code to the video interface transmission of Video Controller, and the second identifying code comprises the information of the condition code of unique identification playing device; And Video Controller parses the second identifying code carried in image data stream, and judge whether the second identifying code mates with the first identifying code obtained from communication interface, if coupling, the view data in image data stream is sent to LED display and shows by Video Controller.The playing device broadcasting of not binding of view data the present invention changes to(for) illegal user correctly can identify and can make intercept process, can not be shown in LED display by illegal video image, improve the security performance that LED display is play.
Description
Technical field
The present invention relates to display control technology field, particularly the safe player method of a kind of LED display and Video Controller.
Background technology
Existing LED (LightEmittingDiode, light emitting diode) display screen controlling media play system can be distinguished into LED display synchronous control system and LED display asynchronous control system according to the difference of control mode.Wherein, synchronous control system mainly comprises usually plays computing machine, Video Controller (also claiming sending card) and LED display, play computing machine to be connected with LED display by sending card, therefore the image content of LED display broadcasting is consistent with the content that computing machine is play, and computing machine is once shut down, and LED display cannot play media.LED display asynchronous control system then mainly comprises asynchronous control-card (a kind of embedded Control card with arm processor) and LED display, asynchronous control-card incorporates the necessary function of broadcasting computing machine in synchronous control system and the function of sending card, therefore LED display when playing media without the need to being connected to computing machine.At present, LED display synchronous control system is mainly used to real-time display video, picture and text, notice etc., is used for indoor or outdoor full color big screen display screen; LED display asynchronous control system is mainly used to show various word, symbol and figure or animation is main; Therefore, the application demand of LED display synchronous control system is relatively many.
For LED display synchronous control system, the broadcasting video output interface of computing machine is connected by connecting line with the video input interface of sending card, and on broadcasting computing machine, playout software is installed, film source to be played is decoded into the receptible image data stream of sending card such as rgb video image data stream by playout software, and rgb video view data is sent in LED display and shows by sending card more in real time.
But, particularly existing LED display synchronous control system is play in security in LED display and be there is very large hidden danger, lawless person only need change with illegal video source broadcasting computing machine, playout software be installed, connect the video output of broadcasting computing machine after changing by connecting line and the video input interface of sending card just directly can play illegal video in LED display.
Summary of the invention
There is for solving LED display in prior art the technological deficiency playing potential safety hazard, the invention provides the safe player method of a kind of LED display and a kind of Video Controller.
Particularly, the safe player method of a kind of LED display provided by the invention, is applied between playing device, the Video Controller be connected with playing device and the LED display that is connected with Video Controller.The safe player method of LED display comprises step: playing device transmits the first identifying code to the communication interface of Video Controller, and the first identifying code comprises the information of the condition code of unique identification playing device; Playing device carries the image data stream of the second identifying code to the video interface transmission of Video Controller, and the second identifying code comprises the information of the condition code of unique identification playing device; And Video Controller parses the second identifying code carried in image data stream, and judge whether the second identifying code parsed mates with the first identifying code obtained from communication interface, if coupling, the view data in image data stream is sent to LED display and shows by Video Controller.
In addition, a kind of Video Controller that the embodiment of the present invention provides, is suitable for connecting playing device and LED display.Video Controller comprises communication interface, video interface, authentication module and display control module.Wherein, communication interface is for receiving the first identifying code of playing device, and the first identifying code comprises the information of the condition code of unique identification playing device.The image data stream carrying the second identifying code that video interface transmits for receiving playing device, and the second identifying code comprises the information of the condition code of unique identification playing device.Authentication module for parsing the second identifying code carried in image data stream, and judges whether the second identifying code parsed mates with the first identifying code obtained from communication interface.Display control module be used for judge the second identifying code with the first identifying code as mating time, the view data in image data stream is sent to LED display and shows.
The present invention realizes binding Video Controller and playing device by the first identifying code comprising the information of the condition code of unique identification playing device, and add in vedio data stream and comprise the second identifying code of the information of the condition code of unique identification playing device, Video Controller can judge whether the second identifying code of receiving and the first identifying code mate.So, then illegal user is changed to the view data of the playing device broadcasting of not binding, Video Controller end correctly can identify and make the process of interception, can not illegal video image be shown in LED display, improve the security performance that LED display is play, solve the problem that current LED display control field plays security well.
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.
The configuration diagram of a kind of LED display control system that the safe player method of the LED display that Fig. 1 is the embodiment of the present invention adopts.
A kind of high-level schematic functional block diagram that Fig. 2 is Video Controller shown in Fig. 1.
Fig. 3 is the flow chart of steps of the safe player method of LED display of first embodiment of the invention.
Fig. 4 is the flow chart of steps of the safe player method of LED display of second embodiment of the invention.
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.
The configuration diagram of a kind of LED display control system that the safe player method of the LED display that Fig. 1 is the embodiment of the present invention adopts.As shown in Figure 1, the applicable LED display control system 10 of the safe player method of LED display of the present invention comprises playing device 11, Video Controller 13 and LED display 15.
Particularly, playing device 11 is connected to video interface 132 and the communication interface 134 of Video Controller 13.At this, playing device 11 is such as computing machine, or other can carry out the electronic installation that media play can realizing controls Video Controller 13 by mounting software, and the citing using computing machine as playing device 11 is described by following examples.Playing device 11 is provided with multiple Peripheral Interface so that and Video Controller 11 carry out the mutual of data and instruction.
The video interface 132 of Video Controller 134 is such as VGA (VideoGraphicsArray, Video Graphics Array) interface, DVI interface (DigitalVisualInterface, digital visual interface), HDMI (HighDefinitionMultimediaInterface, high-definition media interface), SDI interface (SerialDigitalInterface, digital serial interface) or DP (DisplayPort) interface etc. can the interfaces of transmit image data.Communication interface 134 is such as USB interface, RS232 or RS485 serial ports or network interface.See also Fig. 2, it is the high-level schematic functional block diagram of the Video Controller 13 of the embodiment of the present invention.In fig. 2, Video Controller 13 is except comprising above-mentioned video interface 132 and communication interface 134, also comprise authentication module 136 and display control module 138, the safe player method of LED display in the follow-up cooperation embodiment of the present invention is described in detail by its concrete function.
LED display 15 is connected to the output interface (not showing in Fig. 1 and Fig. 2) of Video Controller 13, and the output interface of Video Controller 13 is such as optical fiber interface or network interface (such as RJ45 interface).When this output interface adopts optical fiber interface to be used as the transmission of long range image data stream, usually the photoelectric commutator that an optical fiber interface turns network interface can be added between Video Controller 13 and LED display 15.LED display 15 generally includes multiple LED box be stitched together, and each LED box is configured with receiving card and is electrically connected to multiple LED lamp panel of receiving card, and even the plurality of LED lamp panel to be formed with receiving card by adapter to be electrically connected; Receiving card in LED box also claims LED display control panel, and it obtains the view data of the LED lamp panel to one's name controlled from Video Controller 13 and delivers to LED lamp panel and show.
[the first embodiment]
The safe player method of a kind of LED display that first embodiment of the invention provides is described in detail below in conjunction with Fig. 1, Fig. 2 and Fig. 3.Wherein, Fig. 3 is the flow chart of steps of the safe player method of a kind of LED display.As shown in Figure 3, the safe player method of LED display of the present embodiment is suitable for the LED display control system 10 be applied in shown in Fig. 1, and it comprises the following steps 300 to step 380.
Step 300: the communication interface 134 to Video Controller 13 transmits the condition code of unique identification playing device 11.Herein, the communication interface 134 to Video Controller 13 transmits condition code and can be performed by playing device 11, also can be that other equipment perform; The condition code of unique identification playing device 11 is as the first identifying code; And condition code is sent to communication interface 134 in the mode of steering order, such as, using the parameter of condition code as steering order.In addition, the condition code of unique identification playing device 11 is such as the physical network card MAC Address of playing device 11, physical hard disk sequence number, CPU sequence number, mainboard BOIS sequence number or its combination, and these condition codes can the identity of unique identification playing device 11.Be understandable that, the condition code of unique identification playing device 11 also can be the condition code that the validated user of playing device 11 is artificially arranged, as long as can unique identification playing device 11.In addition, Video Controller 13 carries out the use of storage in order to subsequent authentication after its communication interface 134 obtains the first identifying code.
Step 320: playing device 11 transmits to the video interface 132 of Video Controller 13 image data stream carrying the condition code of unique identification playing device 11.At this, condition code entrained in image data stream is as the second identifying code.Be understandable that, before the image data stream of the second identifying code is carried in transmission, also the second identifying code should be added in the image data stream that tendency to develop send.[interpolation] herein can adopt various ways to realize: mode one, second identifying code is packed into the image data stream that tendency to develop is sent, such as the second identifying code is placed on data sequence head or data group head or other assigned addresses, as long as Video Controller 13 can parse; Mode two, engineering noise view data in the image data stream sent with the second identifying code replacement tendency to develop, the resolution that the image data stream that such as playing device 11 transmits is corresponding is 1024*768, and the display resolution of LED display 15 such as only has 700*600, data then outside 700*600 are then engineering noise view data described herein, even if these engineering noise view data also shown by LED display 15, also can not can not affect final display screen display quality even if therefore replaced by the second identifying code when not being replaced.
Step 340: Video Controller 13 obtains the image data stream carrying condition code from video interface 132 after, parsed the condition code of carrying in image data stream by authentication module 136, and judge that the condition code parsed obtains with from communication interface 134 and whether the condition code stored mates.
Step 360: if the judged result of authentication module 136 is coupling, then by display control module 138, the view data in image data stream is sent to LED display 15 and shows.
Step 380: if the judged result of authentication module 136 is not for mate, then display control module 138 pairs of image data streams carry out intercept process, also namely do not deliver to LED display 15 and show.So far, the safety that can realize LED display 15 is play.
[the second embodiment]
The safe player method of a kind of LED display that second embodiment of the invention provides is described in detail below in conjunction with Fig. 1, Fig. 2 and Fig. 4.Wherein, Fig. 4 is the flow chart of steps of the safe player method of another kind of LED display.As shown in Figure 4, the safe player method of LED display of the present embodiment is suitable for the LED display control system 10 be applied in shown in Fig. 1, and it comprises the following steps 400 to step 480.
Step 400: the communication interface 134 to Video Controller 13 transmits condition code and the random code of unique identification playing device 11.Random code is herein generated by playing device 11, and it is time dependent, such as, be then generate different random codes at interval of certain hour section; Condition code herein and random code are as the first identifying code; And condition code and random code can be sent to communication interface 134 in steering order mode respectively, such as, using condition code and random code as the parameter of steering order.In addition, the condition code of unique identification playing device 11 is such as the physical network card MAC Address of playing device 11, physical hard disk sequence number, CPU sequence number, mainboard BOIS sequence number or its combination, or even the feature that validated user is artificially arranged; These condition codes can the identity of unique identification playing device 11.In addition, Video Controller 13 carries out the use of storage in order to subsequent authentication after its communication interface 134 obtains the first identifying code (comprising condition code and random code).
Step 420: playing device 11 transmits to the video interface 132 of Video Controller 13 image data stream carrying the condition code of unique identification playing device 11 and the information of random code.At this, playing device 11, after acquisition condition code and random code, first can carry out cryptographic calculation to generate the second identifying code, and therefore the second identifying code herein comprises the information of above-mentioned condition code and random code.In addition, be understandable that, before the image data stream of the second identifying code is carried in transmission, also the second identifying code should be added in the image data stream that tendency to develop send.[interpolation] herein can adopt various ways to realize: mode one, second identifying code is packed into the image data stream that tendency to develop is sent, such as the second identifying code is placed on data sequence head or data group head or other assigned addresses, as long as Video Controller 13 can parse; Mode two, engineering noise view data in the image data stream sent with the second identifying code replacement tendency to develop, the resolution that the image data stream that such as playing device 11 transmits is corresponding is 1024*768, and the display resolution of LED display 15 such as only has 700*600, data then outside 700*600 are then engineering noise view data described herein, even if these engineering noise view data also shown by LED display 15, also can not can not affect final display quality even if therefore replaced by the second identifying code when not being replaced.
Step 440: Video Controller 13 obtains the image data stream of the information carrying condition code and random code from video interface 132 after, is parsed the information of condition code and the random code of carrying in image data stream, also namely parses the second identifying code by authentication module 136; In addition, also can carry out the cryptographic calculation identical with playing device 11 to the condition code that the first identifying code of above-mentioned storage comprises with random code, whether the result after judging cryptographic calculation more afterwards mates with the second identifying code parsed.
Step 460: if the judged result of authentication module 136 is coupling, then by display control module 138, the view data in image data stream is sent to LED display 15 and shows.
Step 480: if the judged result of authentication module 136 is not for mate, then display control module 138 pairs of image data streams carry out intercept process, also namely do not deliver to LED display 15 and show.So far, the safety that can realize LED display 15 is play.
In addition, be understandable that, the random code in second embodiment of the invention also can replace to fixed code, and be such as the sequence be made up of the symbol such as digital, alphabetical, it can reach the object of safety broadcasting equally.
In summary, the above embodiment of the present invention realizes binding Video Controller and playing device by the first identifying code comprising the information of the condition code of unique identification playing device, and add in vedio data stream and comprise the second identifying code of the information of the condition code of unique identification playing device, Video Controller can judge whether the second identifying code of receiving and the first identifying code mate.As can be seen here, owing to carrying out in the streamed process of view data between playing device and Video Controller, add proof procedure, illegal user is changed to the view data of the playing device broadcasting of not binding, Video Controller end cannot complete checking and thus can correctly identify and the process making interception, can not illegal video image be shown in LED display, improve the security performance that LED display is play, solve the problem that current LED display control field plays security well.
Apply specific case herein to set forth the principle of the safe player method of LED display of the present invention and Video Controller and embodiment, 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 (7)
1. the safe player method of LED display, be applied between playing device, the Video Controller be connected with described playing device and the LED display that is connected with described Video Controller, it is characterized in that, the safe player method of described LED display comprises step:
Communication interface to described Video Controller transmits the first identifying code, and described first identifying code comprises the information of the condition code of playing device described in unique identification;
Engineering noise view data in the image data stream sent with the second identifying code replacement tendency to develop is to obtain carrying the image data stream of described second identifying code, and described engineering noise image definition data is the view data that also can not be shown by described LED display when not being replaced;
Described playing device carries the image data stream of described second identifying code to the video interface transmission of described Video Controller, and described second identifying code comprises the information of the condition code of playing device described in unique identification; And
Described Video Controller parses described second identifying code carried in described image data stream, and judge whether described second identifying code parsed mates with described first identifying code obtained from described communication interface, if coupling, the view data in described image data stream is sent to described LED display and shows by described Video Controller.
2. the safe player method of LED display as claimed in claim 1, it is characterized in that, the condition code of playing device described in described unique identification is the physical network card MAC Address of described playing device, physical hard disk sequence number, CPU sequence number, mainboard BOIS sequence number or its combination.
3. the safe player method of LED display as claimed in claim 1, it is characterized in that, described video interface is USB interface, DVI interface, HDMI, SDI interface or DP interface.
4. the safe player method of LED display as claimed in claim 1, it is characterized in that, described first identifying code more comprises the fixed code or random code that are provided by described playing device, correspondingly described second identifying code is generated by cryptographic calculation by described condition code and described fixed code or random code, and the step whether described judgement described second identifying code parsed and described first identifying code obtained from described communication interface mate comprises:
After described Video Controller gets described first identifying code from described communication interface, with fixed code or random code, the cryptographic calculation identical with described playing device is carried out to the condition code that the first identifying code comprises; And
Whether the result after described cryptographic calculation and described the second identifying code parsed are compared described second identifying code realizing judging to parse and mate with described first identifying code obtained from described communication interface by described Video Controller.
5. the safe player method of LED display as claimed in claim 4, is characterized in that, the condition code that described first identifying code comprises and fixed code or random code are sent to the communication interface of described Video Controller respectively with the parametric form of steering order.
6. a Video Controller, be suitable for connecting playing device and LED display, it is characterized in that, described Video Controller comprises:
Communication interface, for receiving the first identifying code of described playing device, described first identifying code comprises the information of the condition code of playing device described in unique identification;
Video interface, for receiving the image data stream carrying the second identifying code that described playing device transmits, described second identifying code comprises the information of the condition code of playing device described in unique identification;
Authentication module, for parsing described second identifying code carried in described image data stream, and judge whether described second identifying code parsed mates with described first identifying code obtained from described communication interface, wherein, described image data stream replaces the engineering noise view data in the image data stream that send of tendency to develop by described second identifying code and obtains, and described engineering noise image definition data is the view data that also can not be shown by described LED display when not being replaced; And
Display control module, for judge described second identifying code with described first identifying code as mating time, the view data in described image data stream is sent to described LED display and shows.
7. Video Controller as claimed in claim 6, it is characterized in that, described first identifying code also comprises the fixed code or random code that described playing device provides, correspondingly described second identifying code by described playing device, described condition code and described fixed code or random code was encrypted to computing and generated before being sent to described video interface, thus described authentication module is judging that the process whether described second identifying code parsed and described first identifying code obtained from described communication interface mate comprises:
The described condition code comprised by described first identifying code is carried out the cryptographic calculation identical with described playing device with described fixed code or random code and is obtained cryptographic calculation result; And
Described cryptographic calculation result and described second identifying code parsed are compared and realizes judging whether described second identifying code mates with described first identifying code.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721508A (en) * | 2016-04-25 | 2016-06-29 | 南京大学 | Information security protection monitoring method of LED asynchronous control card |
| CN107171801B (en) * | 2017-04-27 | 2020-06-23 | 西安诺瓦星云科技股份有限公司 | Method and device for encrypted binding and encrypted display control and display screen system |
| CN109427288A (en) * | 2017-08-31 | 2019-03-05 | 西安诺瓦电子科技有限公司 | Displaying screen controller, display control program and method |
| CN108495187B (en) * | 2018-04-13 | 2023-09-08 | 杭州芯讯科技有限公司 | Play control device, play control method and play system |
| CN111696474A (en) * | 2019-03-12 | 2020-09-22 | 西安诺瓦电子科技有限公司 | Multimedia playing method and device, display control card and system and display system |
| CN112995751A (en) * | 2019-12-18 | 2021-06-18 | 西安诺瓦星云科技股份有限公司 | Data transmission method and system |
| CN113099268A (en) * | 2019-12-23 | 2021-07-09 | 浙江宇视科技有限公司 | LED display screen video playing method, device, equipment and storage medium |
| CN111131780A (en) * | 2019-12-26 | 2020-05-08 | 深圳市华智有为科技有限公司 | Video playing system and management method thereof, and intelligent pole management system |
| CN113407025A (en) * | 2021-05-27 | 2021-09-17 | 广东职业技术学院 | Information display method and system |
| CN118509624A (en) * | 2024-07-09 | 2024-08-16 | 深圳铸泰科技有限公司 | Public display screen play content security auditing system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1954608A (en) * | 2003-12-05 | 2007-04-25 | 美国电影协会 | System and method for controlling display of copy-never content |
| CN102411691A (en) * | 2010-09-21 | 2012-04-11 | 富泰华工业（深圳）有限公司 | Electronic device and display control method thereof |
| CN102693391A (en) * | 2011-03-22 | 2012-09-26 | 联想(北京)有限公司 | Display method and electronic equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100565327C (en) * | 2000-05-31 | 2009-12-02 | 精工爱普生株式会社 | Projector and control method thereof |
-
2013
- 2013-07-19 CN CN201310306736.7A patent/CN103389889B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1954608A (en) * | 2003-12-05 | 2007-04-25 | 美国电影协会 | System and method for controlling display of copy-never content |
| CN102411691A (en) * | 2010-09-21 | 2012-04-11 | 富泰华工业（深圳）有限公司 | Electronic device and display control method thereof |
| CN102693391A (en) * | 2011-03-22 | 2012-09-26 | 联想(北京)有限公司 | Display method and electronic equipment |
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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 NOVASTAR TECH 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: Xi'an NovaStar Tech Co.,Ltd. |