CN103413518B - A kind of method of LED display screen system and control signal source safety thereof - Google Patents
A kind of method of LED display screen system and control signal source safety thereof Download PDFInfo
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- CN103413518B CN103413518B CN201310277326.4A CN201310277326A CN103413518B CN 103413518 B CN103413518 B CN 103413518B CN 201310277326 A CN201310277326 A CN 201310277326A CN 103413518 B CN103413518 B CN 103413518B
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Abstract
The invention discloses a kind of method of LED display screen system and control signal source safety thereof.This system comprises the control computer, LED display controller and the LED display that are linked in sequence; LED display controller has: the signal source whether signal source for Real-Time Monitoring input there occurs interruption interrupts monitoring modular; When interruption occurs the signal source inputted, the screen lock module of screen locking is carried out for interrupting monitoring module monitors in signal source; And control computer has the solution panel module can removing screen lock state.Have employed a kind of LED display screen system of technical solution of the present invention control signal source safety method, when lawless person's switching signal source, signal source interrupts monitoring modular must detect that signal source there occurs interruption, thus trigger screen lock module action, by the last frame of the shown picture before signal source is interrupted of the video freezing shown by LED display, guarantee that the image in illegal signals source can not show in LED display, thus guarantee LED display release news and the safety of picture.
Description
Technical field
The present invention relates to technical field of LED display, be specifically related to a kind of method of LED display screen system and control signal source safety thereof.
Background technology
Rapidly, various LED large-size screen monitors have more and more entered the visual field of people in LED display technique development in recent years.Current LED display screen system is general as shown in Figure 1, control computer and be connected with LED display controller by RS232/485 serial ports and DVI interface, and LED display controller is connected with LED display again.Control computer is provided with LED display control software design, be responsible for providing programme signal source.LED display controller is also known as LED display control card, and it is the core component of composition LED display screen system, and primary responsibility receives from the control control command of computer serial port and the signal source of DVI interface.And LED display accepts the control of LED display controller, and the picture that display source signal provides.
In above-mentioned LED display screen system, control computer and send control command by RS232/485 serial ports, control the screen such as ON/OFF screen, brightness regulation, the colour temperature body parameter of LED display.By DVI interface, signal source is sent to LED display controller simultaneously.Problems existing is, in LED display screen system just operationally, allows user to change signal source.Such as: disconnect the signal source controlling computer display card and sent by DVI interface, use the signal source that DVD player exports instead.After signal source switches, LED display controller can continue to receive new signal source, and controls the program pictures of LED display display new signal source.In technique scheme, because do not limited the switching of signal source, may bring serious safety problem thus, such as invading equipment can carry out illegal contents publicity by attacking LED display signal source.Lawless person need not break through the rights of using controlling computer, only needs DVI cable to pull up from control computer, is connected to oneself invasion equipment and can arrives object.As shown in Figure 2, Falun Gong or terroristic lawless person cut off the legal signal source of LED display screen system, re-use an invasion equipment (PC or DVD player) and illegal signal source is exported to LED display controller, the illegal contents that invasion equipment will be caused to provide is play in LED display, thus likely upset social order, and the serious consequences such as riot may be caused.
In sum, the safety of the uncontrollable signal source of existing LED display screen system, easily gives lawless person's opportunity, there are major safety risks, thus needs to improve.
Summary of the invention
One of technical matters to be solved by this invention is to provide a kind of LED display screen system, and it can the safety in control signal source, overcomes existing LED display screen system easily invades LED display screen system opportunity potential safety hazard to lawless person.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of LED display screen system, comprises the control computer, LED display controller and the LED display that are linked in sequence; Described LED display controller has: the signal source whether signal source for Real-Time Monitoring input there occurs interruption interrupts monitoring modular; When interruption occurs the signal source inputted, the screen lock module of screen locking is carried out for interrupting monitoring module monitors in signal source; And described control computer has the solution panel module can removing screen lock state, for removing the screen locking of screen lock module to recover normal play after the possibility of illegal invasion is excluded.
In preferred technical scheme, described control computer also has and can be used for controlling described signal source and interrupt the open/close signal source of monitoring modular and interrupt monitoring switch.
In preferred technical scheme, described screen locking refers to the last frame of video freezing before interruption shown by LED display.
Two of technical matters to be solved by this invention is corresponding methods providing a kind of LED display screen system control signal source safety, it can the safety in control signal source, overcomes existing LED display screen system easily invades LED display screen system opportunity potential safety hazard to lawless person.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A method for LED display screen system control signal source safety, it carrys out the safety in control signal source based on aforesaid a kind of LED display screen system, and the method comprises the steps:
S1), monitoring: after system electrification is run, whether the signal source that signal source interruption monitoring modular Real-Time Monitoring inputs into LED display controller there occurs interruption;
S2), screen locking: signal source interrupts monitoring modular once monitor signal source and interrupt, then triggering screen lock module is by the last frame of the video freezing shown by LED display before interruption;
S3), Xie Ping: after the possibility of illegal invasion is excluded, described solution panel module removes the screen locking of screen lock module, thus recovers the normal play of LED display screen system.
In preferred technical scheme, described control computer also has and can be used for controlling described signal source and interrupt the open/close signal source of monitoring modular and interrupt monitoring switch; The step that the method comprises " temporary transient shielding protection ": before the legal interruption of signal source; interrupt monitoring switch temporary close signal source by this signal source and interrupt monitoring modular, the legal switching signal source that the legal interruption of described signal source includes but not limited to and legal maintained LED display screen system.
In preferred technical scheme, described screen locking refers to the last frame of video freezing before interruption shown by LED display.
The invention has the beneficial effects as follows: a kind of LED display screen system that have employed the method for technical solution of the present invention a kind of LED display screen system control signal source safety, when lawless person's switching signal source, signal source interrupts monitoring modular must detect that signal source there occurs interruption, thus trigger screen lock module action, by the last frame of the shown picture before signal source is interrupted of the video freezing shown by LED display, guarantee that the image in illegal signals source can not show in LED display, thus guarantee LED display release news and the safety of picture.Invasion can use solution panel module after getting rid of, and removes the lock-out state of LED display, recovers normal play.
Accompanying drawing explanation
Fig. 1 is the theory diagram of existing LED display screen system;
Fig. 2 is the schematic diagram that lawless person invades existing LED display screen system;
Fig. 3 is the theory diagram of specific embodiment of the invention LED display screen system.
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment
In order to avoid lawless person utilizes invasion equipment illegally to switch the signal source of LED display screen system, thus avoid LED display screen system to play illegal information, a kind of LED display screen system that this embodiment provides as shown in Figure 3, the same with existing LED display screen system, also comprise: control computer, LED display controller and LED display.Be with the difference of prior art, control also to comprise in computer: separate panel module; Then set up signal source in LED display controller and interrupt monitoring modular and screen lock module.
Wherein: whether the signal source that signal source interruption monitoring modular is come in for Real-Time Monitoring input there occurs interruption; Screen lock module, for interrupting monitoring module monitors in signal source to when inputting the signal source generation interruption of coming in, by the last frame before interruption of the video freezing shown by LED display, be locked in last frame and LED display can be made to be unlikely to blank screen or show other inappropriate picture; Separate panel module for removing the screen locking action of screen lock module.Like this, when lawless person's switching signal source time, signal source interrupts monitoring modular must detect that signal source there occurs interruption, thus trigger screen lock module action, by the last frame of the shown picture before signal source is interrupted of the video freezing shown by LED display, guarantee that the image in illegal signals source can not show in LED display, thus guarantee LED display release news and the safety of picture.Invasion can use solution panel module after getting rid of, and removes the lock-out state of LED display, recovers normal play.
LED display is wide as a kind of audient, affect large public media, and the security of its play content can not be ignored.The specific embodiment of the invention can carry out illegal contents publicity by attacking LED display signal source by Intrusion prevention equipment, strengthens the health of LED display, actively the effect of publicity, has larger practical value.
But, easily misoperation is there is in aforesaid technical scheme, such as at legal switching signal source or when carrying out legal maintenance to LED display, also screen lock module action may be triggered, at this moment may need to travel frequently over and separate panel module and carry out solution screen system is normally worked again, thus may there is inconvenience.In preferred technical scheme, also on control computer, set up signal source and interrupted monitoring switch, this signal source interrupts monitoring switch interrupts monitoring modular switch for controlling described signal source.When carrying out legal switching and conventional maintenance needs, detector switch can be interrupted by this signal source and close described signal source interruption monitoring modular, when LED display screen system normally works, then interrupt detector switch by this signal source and open described signal source interruption monitoring modular.
It should be stressed, one skilled in the art can understand the above: signal source interrupts monitoring switch, solution panel module, signal source interrupts monitoring modular and screen lock module can go to realize by hardware, also can go to realize by software on certain hardware foundation, also can go to realize by software and hardware combining.But under current technical conditions, signal source is interrupted monitoring switch reconciliation panel module and is got on to realize at the control software design controlling computer more simple and convenient.And signal source interrupts monitoring modular and screen lock module can pass through software simulating, can also pass through hardware implementing, the mode preferably by software and hardware combining realizes, and is not described in detail in this herein, but these implementations all should within protection scope of the present invention.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a LED display screen system, comprise and being linked in sequence: control computer, LED display controller and LED display, it is characterized in that, described LED display controller has: the signal source whether signal source for Real-Time Monitoring input there occurs interruption interrupts monitoring modular; When interruption occurs the signal source inputted, the screen lock module of screen locking is carried out for interrupting monitoring module monitors in signal source; And described control computer has the solution panel module can removing screen lock state, for removing the screen locking of screen lock module to recover normal play after the possibility of illegal invasion is excluded.
2. a kind of LED display screen system as claimed in claim 1, is characterized in that, described control computer also has and can be used for controlling described signal source and interrupt the open/close signal source of monitoring modular and interrupt monitoring switch.
3. a kind of LED display screen system as claimed in claim 1 or 2, is characterized in that, described screen locking refers to the last frame of video freezing before interruption shown by LED display.
4. a method for LED display screen system control signal source safety, it carrys out the safety in control signal source based on a kind of LED display screen system according to claim 1, and the method comprises the steps:
S1), monitoring: after system electrification is run, whether the signal source that signal source interruption monitoring modular Real-Time Monitoring inputs into LED display controller there occurs interruption;
S2), screen locking: signal source interrupts monitoring modular once monitor signal source and interrupt, then triggering screen lock module is by the last frame of the video freezing shown by LED display before interruption;
S3), Xie Ping: after the possibility of illegal invasion is excluded, described solution panel module removes the screen locking of screen lock module, thus recovers the normal play of LED display screen system.
5. the method for a kind of LED display screen system control signal source as claimed in claim 4 safety, is characterized in that, described control computer also has and can be used for controlling described signal source and interrupt the open/close signal source of monitoring modular and interrupt monitoring switch; The step that the method comprises " temporary transient shielding protection ": before the legal interruption of signal source; interrupt monitoring switch temporary close signal source by this signal source and interrupt monitoring modular, the legal interruption of described signal source comprises legal switching signal source and legal maintained LED display screen system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310277326.4A CN103413518B (en) | 2013-07-03 | 2013-07-03 | A kind of method of LED display screen system and control signal source safety thereof |
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| CN201310277326.4A CN103413518B (en) | 2013-07-03 | 2013-07-03 | A kind of method of LED display screen system and control signal source safety thereof |
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| CN103413518B true CN103413518B (en) | 2016-04-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103680405A (en) * | 2013-11-29 | 2014-03-26 | 深圳市奥拓电子股份有限公司 | LED display system and safe signal switching method thereof |
| CN106648491A (en) * | 2016-10-12 | 2017-05-10 | 深圳市优景观复光电有限公司 | Interactive LED display apparatus and display method |
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| CN101662596A (en) * | 2008-08-29 | 2010-03-03 | 深圳中电数码显示有限公司 | Large screen display system |
| CN202102690U (en) * | 2011-06-13 | 2012-01-04 | 南京德普达电子技术有限公司 | All-color big screen display controller |
| CN102522065A (en) * | 2011-12-23 | 2012-06-27 | 深圳市奥拓电子股份有限公司 | LED display system and communication control method thereof |
| KR20130065757A (en) * | 2011-11-28 | 2013-06-20 | 오금동 | Multi-function display system and display method using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050015188A (en) * | 2003-08-04 | 2005-02-21 | 삼성전자주식회사 | Apparatus and method for display having lock function about external input |
| KR20050022406A (en) * | 2003-08-30 | 2005-03-08 | 삼성전자주식회사 | Multi screen display device and control method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662596A (en) * | 2008-08-29 | 2010-03-03 | 深圳中电数码显示有限公司 | Large screen display system |
| CN202102690U (en) * | 2011-06-13 | 2012-01-04 | 南京德普达电子技术有限公司 | All-color big screen display controller |
| KR20130065757A (en) * | 2011-11-28 | 2013-06-20 | 오금동 | Multi-function display system and display method using the same |
| CN102522065A (en) * | 2011-12-23 | 2012-06-27 | 深圳市奥拓电子股份有限公司 | LED display system and communication control method thereof |
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Address after: 518000 1805, tower 2, Shenye Jinyuan Building, No.112, Qingshuihe 1st Road, Qingshuihe community, Luohu District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN AOTO ELECTRONICS Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District high tech Industrial Park building T2 A6-B Patentee before: SHENZHEN AOTO ELECTRONICS Co.,Ltd. |
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