LED (light-emitting diode) display screen safe playing method and video controller

A technology of LED display and video controller, applied in static indicators, digital output to display devices, instruments, etc., can solve problems such as hidden dangers of playback safety, and achieve the effect of improving safety performance and solving playback security.

Active Publication Date: 2013-11-13
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical defect of the LED display screen in the prior art that there are potential safety h

Method used

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  • LED (light-emitting diode) display screen safe playing method and video controller
  • LED (light-emitting diode) display screen safe playing method and video controller
  • LED (light-emitting diode) display screen safe playing method and video controller

Examples

Experimental program
Comparison scheme
Effect test

Example

[0020] 【The first embodiment】

[0021] Combine below figure 1 , figure 2 and image 3 A method for safely playing an LED display screen provided by the first embodiment of the present invention is described in detail. in, image 3 It is a flow chart of steps for a method for safely playing an LED display screen. like image 3 As shown, the LED display screen safe playback method of this embodiment is suitable for application in figure 1 The shown LED display screen control system 10 includes the following steps 300 to 380 .

[0022] Step 300: Send the feature code uniquely identifying the playback device 11 to the communication interface 134 of the video controller 13 . Here, the transmission of the feature code to the communication interface 134 of the video controller 13 can be performed by the playback device 11, and can also be performed by other equipment; the unique identification of the feature code of the playback device 11 is used as the first verification cod...

Example

[0027] 【Second Embodiment】

[0028] Combine below figure 1 , figure 2 and Figure 4 A method for safely playing an LED display screen provided by the second embodiment of the present invention will be described in detail. in, Figure 4 It is a flow chart of steps for another LED display safe playback method. like Figure 4 As shown, the LED display screen safe playback method of this embodiment is suitable for application in figure 1 The shown LED display screen control system 10 includes the following steps 400 to 480 .

[0029] Step 400: Send the feature code and random code uniquely identifying the playback device 11 to the communication interface 134 of the video controller 13 . The random code here is generated by the playback device 11, which changes with time, for example, different random codes are generated every certain period of time; the characteristic code and random code here are used as the first verification code; and the characteristic The code and th...

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Abstract

The invention relates to an LED (light-emitting diode) display screen safe playing method and a video controller. The method comprises the steps: transmitting a first verification code to a communication interface of the video controller, wherein the first verification code comprises information of feature codes which uniquely identify a playing device; transmitting an image data stream which carries a second verification code to a video interface of the video controller by using the playing device, wherein the second verification code comprises the information of the feature codes which uniquely identify the playing device; analyzing the second verification code carried by the image data stream by using the video controller, and judging whether the second verification code is matched with the first verification code which is obtained from the communication interface, wherein if the second verification code is matched with the first verification code, image data in the image data stream is transmitted to an LED display screen for being displayed by using the video controller. With the adoption of the safe playing method and the video controller disclosed by the invention, image data which are played with an unbound playing device which is used by an illegal user can be correctly recognized and can be intercepted and treated, illegal video images cannot be displayed on the LED display screen, and the safe playing performance of the LED display screen is enhanced.

Description

technical field [0001] The invention relates to the technical field of display control, in particular to a method for safely playing an LED display screen and a video controller. Background technique [0002] The existing LED (Light Emitting Diode, light-emitting diode) display media playback control system can be divided into LED display synchronous control system and LED display asynchronous control system according to different control methods. Among them, the synchronous control system usually mainly includes a playback computer, a video controller (also known as a sending card) and an LED display. Consistently, once the computer is turned off, the LED display will not be able to play media. The LED display asynchronous control system mainly includes an asynchronous control card (an embedded control card with an ARM processor) and an LED display. The asynchronous control card integrates the necessary functions of the playback computer in the synchronous control system a...

Claims

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Application Information

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IPC IPC(8): G06F3/14G09G3/32
Inventor 周晶晶李艳妮
Owner XIAN NOVASTAR TECH
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