Digital video interactive (DVI) signal receiver of three-dimensional (3D) light-emitting diode (LED) display screen, and working method of DVI signal receiver

A signal receiver, 3D LED technology, applied in the direction of static indicators, instruments, image communication, etc., can solve the problems that ordinary control cards cannot receive high-definition 3D signals, cannot receive 1920*1080@120Hz signals, etc., and achieve good reliability , The effect of simple circuit structure

Inactive Publication Date: 2013-02-13
常州电子研究所有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the current LED display control card system can only receive signals up to 1920*1080@60Hz, but cannot receive signals of 1920*1080@120Hz, so ordinary control cards cannot receive high-definition 3D signals

Method used

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  • Digital video interactive (DVI) signal receiver of three-dimensional (3D) light-emitting diode (LED) display screen, and working method of DVI signal receiver
  • Digital video interactive (DVI) signal receiver of three-dimensional (3D) light-emitting diode (LED) display screen, and working method of DVI signal receiver
  • Digital video interactive (DVI) signal receiver of three-dimensional (3D) light-emitting diode (LED) display screen, and working method of DVI signal receiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] See Figures 1 to 4 , in the process of DVI digital video signal data transmission, its DVI bandwidth calculation formula:

[0023] Pixels / Second = #HorizontalPixel × #VerticalPixels × Rate × +

[0024] When the bandwidth exceeds the clock frequency of 165MHz, the DVI signal can enable dual TMDS (also denoted as T.M.D.S.) links to transmit data, and the bandwidth of each link is half of the total bandwidth. The two links share the same clock link, and the clock frequency is half of the clock frequency required by the total bandwidth. TMDS is also known as Transition Minimized Differential Signaling or Transition Modulated Differential Signaling.

[0025] Among them, the distribution of the DVI transmission line harness is shown in Table 1.

[0026] Pin Signal assignment Pin Signal assignment Pin Signal assignment 1 T.M.D.S. Data2- 9 T.M.D.S. Data1- 17 T.M.D.S. Data0- 2 T.M.D.S. Data2+ 10 T.M.D.S. Data1+ 18 T.M.D.S. Da...

Embodiment 2

[0047] The working method of the DVI signal receiver of a kind of 3D LED display screen realized on the basis of embodiment 1, comprising:

[0048] The DVI input interface is connected to the video digital data transmitted by the dual TMDS links, and the odd-column pixel data in the video digital data transmitted by the first MDS link is allocated to the first DVI output interface, and the second TMDS is allocated at the same time. The even-column pixel data in the transmitted video digital data is linked to the second DVI output interface.

[0049] In the specific implementation process, when the 3D graphics card is connected to the DVI input interface, the 3D graphics card outputs a high-definition digital 3D signal with a refresh rate of 120HZ. After the high-definition digital 3D signal enters the DVI input interface, it is distributed to the first and second Two DVI output interfaces, that is, the first and second DVI output interfaces simultaneously output the odd and ev...

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Abstract

The invention relates to a digital video interactive (DVI) signal receiver of a three-dimensional (3D) light-emitting diode (LED) display screen. The DVI signal receiver comprises a DVI input interface, a first DVI output interface and a second DVI output interface, wherein the DVI input interface is applied to access video digital data transmitted by a double transition minimized differential signaling (TMDS) link; the first DVI output interface is connected with an output end of a first TMDS link of the DVI input interface, that is to say, the first DVI output interface outputs odd arrays of pixel data of the video digital data transmitted by the first TMDS link; the second DVI output interface is connected with the output end of a second TMDS link of the DVI input interface, that is to say, the second DVI output interface outputs even arrays of pixel data of the video digital data transmitted by the second TMDS link; and the first TMDS link and the second TMDS link shares the same clock signal. According to the DVI signal receiver, the video digital data is transmitted by the double TMDS link, and therefore, high-definition digital signals with relatively high refresh rate can be transmitted.

Description

technical field [0001] The invention relates to a DVI signal receiver of a 3D LED display screen and a working method thereof. Background technique [0002] In the prior art, most of the active 3D display is sent by the 3D graphics card of the computer through the output interface to send high-definition 120Hz digital signals for the display device to receive. However, the current LED display control card system can only receive signals up to 1920*1080@60Hz, but cannot receive signals of 1920*1080@120Hz, so ordinary control cards cannot receive high-definition 3D signals. Therefore, how to make the 3D LED display screen receive the high-definition 3D signal of 1920*1080@120Hz through the common control card is a technical problem in this field. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a DVI signal receiver suitable for receiving high-definition digital signals on a 3D LED display screen and a working meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/32H04N13/04
Inventor 吴星华姜文斌陈莉萍王科涛朱迁虎
Owner 常州电子研究所有限公司
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