Method for connecting multiple displayers in series by using daisy chain

A technology that uses daisy-chaining, displays, applied in the direction of static indicators, cathode ray tube indicators, digital output to display devices, etc.

Inactive Publication Date: 2016-10-05
TOP VICTORY INVESTMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the bandwidth limitation of the existing DP video interface, for example, the bandwidth of DP 1.2 is up to 21.6 Gbit / s, and its DP daisy chain can only connect up to 4 Full High Definition (FHD) displays in series

Method used

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  • Method for connecting multiple displayers in series by using daisy chain
  • Method for connecting multiple displayers in series by using daisy chain

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Embodiment Construction

[0033] See figure 1 , figure 1 It is a flowchart of a method for daisy-chaining multiple displays according to an embodiment of the present invention. In step S1, the computer and the first to Nth displays are provided, where N is an integer greater than 1, wherein the computer has a video terminal and a command terminal, and the first to Nth displays all have a first video terminal, a second video terminal, and a first video terminal. A command terminal and a second command terminal, wherein the video terminal of the computer is coupled to the first video terminal of the first display, the second video terminal of the i display is coupled to the first video terminal of the (i+1) display, and the computer The command terminal of the i display is coupled to the first command terminal of the first display, the second command terminal of the i display is coupled to the first command terminal of the (i+1) display, and i is any integer from 1 to (N-1) .

[0034] In one embodimen...

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PUM

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Abstract

The invention discloses a method for connecting multiple displayers by using a daisy chain. The method comprises the following steps: a user provides a computer and N displayers which are connected in series in a daisy chain manner; the computer sends a detection command from a command end thereof, obtains the number of N according to the response of the displayers, and then calculates a resolution conforming to a current video interface bandwidth; the computer sends a setting command from the command end thereof, wherein the setting command is used for setting EDID (Extended Display Identification Data) of each displayer to only support the calculated resolution; when receiving the setting command, a first command end of each displayer resets the EDID of each displayer, then sends the setting command from a second command end of each displayer and sends a hot plug detection signal from a first video end of each displayer; the computer sequentially receives the hot plug detection signal of each displayer from a video end of the computer, rereads the EDID of each displayer, generates a video according to the unique resolution in the EDID and then sends the video from the video end of the computer; after receiving the video, the first video end of each displayer displays a picture and then sends the video from a second video end of each displayer.

Description

technical field [0001] The invention relates to a method for cascading multiple displays, in particular to a method for cascading multiple displays using a daisy chain. Background technique [0002] The existing video interface (video interface), such as DisplayPort (DP), provides a daisy-chain connection function, so that multiple monitors can be connected in series through a DP cable, and each monitor can display a different display. picture. In the existing DP daisy chain connection function, the total transmission data volume is obtained by summing up the data volume of the highest resolution supported by the Extended Display Identification Data (Extended Display Identification Data, EDID) of the DP of each display. However, limited by the bandwidth limitation of the existing DP video interface, for example, the bandwidth of DP 1.2 is up to 21.6 Gbit / s, and its DP daisy chain can only connect up to 4 Full High Definition (FHD) displays in series. Even if the computer s...

Claims

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Application Information

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IPC IPC(8): G06F3/14G09G5/00
Inventor 张家豪
Owner TOP VICTORY INVESTMENTS
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