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Multimedia playing method and device, display control card and system and display system

A technology for multimedia playback and display control cards, applied in static indicators, instruments, etc., can solve the problem of inability to prevent video sources, and achieve the effect of avoiding illegal content playback and improving security and reliability.

Inactive Publication Date: 2020-09-22
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional playback control method cannot prevent the video source from being output from the operating system to the programmable logic device of the multimedia playback device such as FPGA, then output to the receiving card and displayed on the LED display

Method used

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  • Multimedia playing method and device, display control card and system and display system
  • Multimedia playing method and device, display control card and system and display system
  • Multimedia playing method and device, display control card and system and display system

Examples

Experimental program
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Effect test

no. 1 example

[0024] see figure 1 , which is a schematic structural diagram of a display system such as an LED display system provided by the second embodiment of the present invention. The display system 1 includes, for example, a display control system 10 and an LED light panel 20 connected to the display control system 10 .

[0025] Specifically, the display control system 10 here can be, for example, an LED display control system. The display control system 10 includes: a multimedia playback device (or a sending card, a multimedia player) 110 and a display control card (or a receiving card) 120 connected to the multimedia playback device 110 . The multimedia playback device 110 analyzes and processes the input video data and sends it to the display control card 120 .

[0026] like figure 2 As shown, the multimedia playback device 110 includes, for example, an embedded processor 111 and a programmable logic device 113 connected to the embedded processor 111 . Embedded processor 111 ...

no. 2 example

[0034] see Figure 5 , which is a schematic flowchart of a multimedia playback method provided by the second embodiment of the present invention. The multimedia playback method according to the embodiment of the present invention mainly includes the steps:

[0035] S11: Parse the specified position pixel data in the input image frame as the first key;

[0036] S13: Verify the first key with a preset key to determine the validity of the input image frame; and

[0037] S15: After the verification is passed, output the pixel data of the input image frame in association with the preset key.

[0038] For the specific implementation process and technical effects of the multimedia playback method in this embodiment, reference may be made to the description of the foregoing first embodiment, which will not be repeated here.

no. 3 example

[0040] see Image 6 , which is a schematic structural diagram of a multimedia playback device 300 according to the third embodiment of the present invention. The multimedia playback device 300 includes a parsing module 310 , a verification module 330 and an output module 350 .

[0041] The parsing module 310 is used for parsing the specified position pixel data in the input image frame as the first key;

[0042] a verification module 330, configured to verify the first key with a preset key to determine the validity of the input image frame; and

[0043] The output module 350 is configured to associate and output the pixel data of the input image frame and the preset key after the verification is passed.

[0044] Further, the parsing module 310, the verification module 330 and the output module 350 are integrated into the programmable logic device of the multimedia playback device.

[0045] For the specific working process and technical effect of the multimedia playback dev...

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Abstract

The embodiment of the invention discloses a multimedia playing method, a multimedia playing device, a display control card, a display control system and a display system. The multimedia playing methodcomprises the following steps: analyzing pixel data at a specified position in an input image frame to serve as a first secret key; verifying the first secret key by utilizing a preset secret key soas to determine the legality of the input image frame; after the verification is passed, outputting the pixel data of the input image frame and the preset key in an associated manner. According to theembodiment of the invention, the situation that illegal content is played after a network hacker invades the multimedia playing device can be effectively avoided, and the safety and reliability of data transmission and display are improved.

Description

technical field [0001] The invention relates to the technical field of multimedia playback and display, in particular to a multimedia playback method, a multimedia playback device, a display control card, a display control system and a display system. Background technique [0002] The operating system installed on the multimedia playback device is typically the Android operating system. The Android operating system is a free and open source operating system based on Linux, which is widely used because of its low development cost. Although the high degree of openness of the Android operating system brings a high degree of development freedom to the research and development work, it also makes it easier for hackers to invade the Android operating system and control the Android operating system to play illegal content. The traditional playback control method of the multimedia playback device is to deliver the playlist encrypted by MD5 through the cloud server. Verify the MD5 ...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 韩丹蔡柳
Owner XIAN NOVASTAR TECH
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