Display driving module with multi-path display output, mainboard, and method multi-path display output

Abstract

It is a kind of display drive module and method that with multiple display output. It can solve the problem that single display drive module cannot drive multiple displays. The display drive module can process and convert multiple image signals that in image memory to multiple digital video signals and output them by image processing controller. The output of image processing controller connects to multiple analog-digital converter, which can convert the digital video signal to analog R, G, B signal and output them. The output of each analog-digital converter connects to display, and enables the displays to display the image data according to the received signal. So this single display drive module drives multiple displays and updates image of them simultaneously.

Description

technical field [0001] The invention relates to a display drive module with multiple display outputs, a main board and a method for multiple display outputs, in particular to a drive module for driving a display. Background technique [0002] Currently used operating systems such as Windows 98 / ME / 20000 / XP all support the multi-screen display function, and multiple monitors can be connected through the host computer to display different image frames. The places where this technology is generally used, such as the train schedule displayed at the train station or airport, or the video wall displayed real-time information in the financial securities industry. [0003] figure 1 The drawing is a schematic diagram of a host computer connected with multiple monitors. Generally, on the motherboard of the computer mainframe 1, several slots for expanding functions (such as slots supporting PCI or ISA specifications) are provided. In addition to related support, several slots must b...

AI Technical Summary

Problems solved by technology

[0009] by figure 1 The method described is limited by the number of slots on the motherboard and cannot drive multiple monitors

while in figure 2 Although the number of driving displays in the drive method is compared to figure 1 More can be added, but also due to the addition of several bus bridges 13, the cost is doubled, and the main board is limited by size and cannot expand the number of bus bridges 13 without limit

In addition, the method of driving two displays 2 with a single display driver module 14 as described in FIG. 4 has a more complicated circuit structure than the structure described in FIG. 3 , and its cost is also higher than that of the structure described in FIG. 3

Furthermore, in the above-mentioned mode of driving multiple monitors 2, the screen updates of all monitors 2 cannot be synchronized. Instead, the mode of updating one by one is adopted, and the monitor driver module 14 to be updated is designated each time, so that the application software can correctly open the monitors. The path of the drive module 14 is used for image updating, and if there are a large number of displays 2, a lot of time will be wasted when the image updates of all displays 2 are completed

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