CN207867393U - The adaptive switching device of display interface and computer main board - Google Patents

Abstract

The utility model relates to a display interface self-adaptive switching device and a computer mainboard, wherein the display interface self-adaptive switching device is used for a computer mainboard, and includes a video switching module, and the video switching module is connected with an integrated display display interface and an independent display display interface It is connected with the CPU, and is used for switching the integrated display interface and the independent display interface under the control of the CPU. The utility model can realize the automatic detection and switching of the independent graphics card and the integrated graphics card, and can choose to install or not install the independent graphics card according to the user's needs, without replacing the main board; at the same time, in some occasions with independent graphics cards, such as battery power supply occasions, it can be turned off Independent graphics card, using integrated display to reduce power consumption and prolong battery life.

Description

Display interface adaptive switching device and computer motherboard

technical field

The utility model belongs to the technical field of computers, in particular to a display interface self-adaptive switching device and a computer mainboard.

Background technique

At present, most notebook computers in the prior art use integrated display. For the Loongson notebook shown in Figure 1, the CPU uses Loongson’s 3A3000 or 3A2000. The CPU is connected to the North Bridge through the HT bus. The display interface is drawn from the North Bridge. Connected through the PCIE bus, SATA, USB, audio, PCI and other signals are drawn from the south bridge, and the display interface drawn from the north bridge can use VGA, DVI, HDMI, LVDS, etc. In addition, some high-end notebooks have independent display, such as the Loongson notebook shown in Figure 2, which expands the independent graphics card through the PCIE bus, and the display interface is led from the independent graphics card chip.

In the above two display methods, when the integrated display is used, the display interface is drawn from the north bridge chip, and when the independent display is used, the display interface is drawn from the independent graphics chip. The display performance requirements are not high, and the individual needs of users who want to save costs by removing the independent display.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a display interface adaptive switching device and a computer motherboard, so as to realize the automatic detection and switching of the independent graphics card and the integrated graphics card.

The utility model provides a display interface self-adaptive switching device, which is used for a computer main board, and includes a video switching module, which is connected with an integrated display display interface, an independent display display interface and a CPU, and is used for controlling the CPU, Switch between integrated display interface and independent display interface.

Further, the integrated display display interface and the independent display display interface are any one of DVI, LVDS and HDMI interfaces.

Further, the computer main board is a notebook computer main board.

Further, the mainboard of the computer is a Godson notebook computer mainboard

The utility model also provides a computer mainboard, comprising the above-mentioned display interface self-adaptive switching device.

Further, the computer motherboard is a Godson notebook computer motherboard.

By means of the above scheme, through the display interface self-adaptive switching device and the computer motherboard, the automatic detection and switching of the independent graphics card and the integrated graphics card can be realized, and the independent graphics card can be installed or not installed according to the user's needs, without replacing the main board; In some occasions, such as battery-powered occasions, you can turn off the independent graphics card and use the integrated display to reduce power consumption and extend the battery life.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with accompanying drawings. back.

Description of drawings

Fig. 1 is the connection diagram of the motherboard of the Loongson notebook computer displayed by the integrated display in the prior art;

Fig. 2 is the motherboard connection diagram of the Loongson notebook computer with independent graphics card in the prior art;

Fig. 3 is a schematic diagram of the connection between the display interface adaptive switching device of the present invention and the main board;

Fig. 4 is a schematic diagram of the connection between the display interface adaptive switching device of the present invention and the main board of the Loongson notebook computer.

Fig. 5 is a circuit diagram of the video switching module of the display interface adaptive switching device of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

Referring to Fig. 3 and Fig. 5, the present embodiment provides a display interface self-adaptive switching device for a computer motherboard, including a video switching module, the video switching module is connected to the integrated display display interface, the independent display display interface and the CPU, It is used to switch between the integrated display interface and the independent display interface under the control of the CPU.

Through the self-adaptive switching device of the display interface, it is possible to realize the automatic detection and switching between the independent graphics card and the integrated graphics card. You can choose to install or not install the independent graphics card according to the user's needs, and there is no need to replace the main board; at the same time, in some occasions with independent graphics cards, such as battery power Occasionally, you can turn off the independent graphics card and use the integrated display to reduce power consumption and prolong battery life.

In this embodiment, the integrated display interface and the individual display interface may be any one of DVI, LVDS, and HDMI interfaces.

As shown in Figure 4, the video switching module is applied to the Loongson notebook computer as a high-speed video switching switch. The LVDS interface led by the independent graphics card and the integrated graphics card first passes through the high-speed video switching switch, and then connects to the LCD screen. The default state is switched to A Channel, that is, integrated display. The control signal of the high-speed video switching switch is connected to the CPU, and is controlled by the CPU. When the CPU starts up, it detects that there is no independent graphics card inserted, and the high-speed video switching switch is switched to the integrated display end, and the signal is output by the integrated display. , so as to realize intelligent switching. When the user has high display requirements, plug in the MXM discrete graphics card. When the user does not have high display requirements, the discrete graphics card can be directly unplugged and the integrated display can be used without further modification.

Since this embodiment is a notebook system, the display interface adopted is an LCD liquid crystal screen, and what uses is an LVDS interface. When a DVI or HDMI interface is used, the high-speed video switching switch is also applicable. The high-speed video switching switch of this embodiment adopts TI's TS3DV642A0RUAR chip, which can switch for DVI, LVDS and HDMI interfaces. influences.

Through the high-speed video switching switch, it can automatically and intelligently detect whether the independent graphics card is inserted, and use it to control the high-speed video switching switch, so that both the independent display and the integrated display can be displayed on the same LCD screen, so that it can be installed according to user requirements. Discrete graphics card. At the same time, due to the high power consumption of Loongson CPU and independent graphics card, when the battery power is used, the power consumption is very fast. When the battery power is low, you can turn off the power supply of the independent graphics card by controlling the video high-speed switching switch, and switch to the integrated graphics card. , to extend battery life.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. It should be pointed out that for those of ordinary skill in the art, they can also do Several improvements and modifications are made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (6)

1. A display interface self-adaptive switching device is used for computer main board, it is characterized in that, comprises video switching module, and described video switching module is connected with integrated display display interface, independent display display interface and CPU, for the control of CPU Next, switch the integrated display display interface and the independent display display interface; the video switching module adopts TS3DV642A0RUAR chip. 2. The display interface adaptive switching device according to claim 1, characterized in that, the integrated display display interface and the individual display display interface are any one of DVI, LVDS and HDMI interfaces. 3. The display interface adaptive switching device according to claim 1 or 2, characterized in that, the computer motherboard is a notebook computer motherboard. 4. The display interface adaptive switching device according to claim 3, characterized in that, the computer motherboard is a Godson notebook computer motherboard. 5. A computer motherboard, characterized in that it comprises the display interface adaptive switching device according to claim 1. 6. The computer mainboard according to claim 5, wherein the computer mainboard is a Loongson notebook computer mainboard.