CN210431690U - Computer video signal control circuit - Google Patents
Computer video signal control circuit Download PDFInfo
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- CN210431690U CN210431690U CN201921629305.3U CN201921629305U CN210431690U CN 210431690 U CN210431690 U CN 210431690U CN 201921629305 U CN201921629305 U CN 201921629305U CN 210431690 U CN210431690 U CN 210431690U
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Abstract
A computer video signal control circuit comprises a chip, a signal conversion device, a control unit, a first transmission interface and a second transmission interface; the signal conversion device is electrically connected between the chip and the control unit, and the first transmission interface and the second transmission interface are both electrically connected with the control unit; the signal conversion device is used for converting the digital signals output by the chip, the control unit is used for switching and controlling the digital signals of the first transmission interface and the second transmission interface, and the first transmission interface and the second transmission interface are both used for being electrically connected with external equipment. The utility model provides a pair of computer video signal control circuit, the interface of adoption have the function that supports hot plug, and convenient to use can satisfy user's user demand.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a signal processing circuit technical field especially relates to a computer video signal control circuit.
[ background of the invention ]
The video signal processing circuit of the computer needs to be connected with external equipment through a special audio and video interface, but most of the existing video signal processing circuits of the computer only support an HDMI (high definition multimedia interface) interface and a VGA (video Graphics array) interface. When the VGA interface of the computer video signal processing circuit is connected with the external device, the VGA interface has incomplete functions (does not support hot plug function, and displays are not clear), which causes inconvenience in use and cannot meet the user's use requirements.
In view of the above, it is desirable to provide a novel computer video signal control circuit to overcome the above drawbacks.
[ Utility model ] content
The utility model aims at providing a computer video signal control circuit, convenient to use can satisfy user's user demand.
In order to achieve the above object, the present invention provides a computer video signal control circuit, which comprises a chip, a signal conversion device, a control unit, a first transmission interface and a second transmission interface; the signal conversion device is electrically connected between the chip and the control unit, and the first transmission interface and the second transmission interface are both electrically connected with the control unit; the signal conversion device is used for converting the digital signals output by the chip, the control unit is used for switching and controlling the digital signals of the first transmission interface and the second transmission interface, and the first transmission interface and the second transmission interface are both used for being electrically connected with external equipment.
In a preferred embodiment, the first transmission interface is a Type-C interface; the second transmission interface is an HDMI interface.
In a preferred embodiment, the first transmission interface is a DP interface.
In a preferred embodiment, the control unit further comprises a first switch and a second switch; the first end of the signal conversion device is electrically connected with the chip, the second end of the signal conversion device is electrically connected with the first end of the first switch and the first end of the second switch of the control unit, the first transmission interface is electrically connected with the second end of the first switch, and the second transmission interface is electrically connected with the second end of the second switch.
In a preferred embodiment, the computer video signal control circuit further comprises a display electrically connected to the chip; the display is capable of receiving and displaying digital signals.
In a preferred embodiment, the display is a liquid crystal display.
Compared with the prior art, beneficial effect lies in: the utility model provides a pair of computer video signal control circuit can transmit high definition video signal, and the interface of adoption has the function that supports hot plug, and convenient to use can satisfy user's user demand.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic block diagram of a computer video signal control circuit provided by the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.
It will be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1, the present invention provides a computer video signal control circuit 100, which includes a chip 10, a signal conversion device 20, a control unit 30, a first transmission interface 40 and a second transmission interface 50; the signal conversion device 20 is electrically connected between the chip 10 and the control unit 30, and both the first transmission interface 40 and the second transmission interface 50 are electrically connected with the control unit 30; the signal conversion device 20 is configured to convert a digital signal output by the chip 10 and an analog-digital signal output by an external device, the control unit 30 is configured to switch and control the digital signals of the first transmission interface 40 and the second transmission interface 50, both the first transmission interface 40 and the second transmission interface 50 are configured to be electrically connected to the external device, and the second transmission interface 50 is configured to transmit a high-definition video signal.
When the chip 10 outputs a digital signal, the signal conversion device 20 receives the digital signal output by the chip 10 and converts the digital signal into a first signal and a second signal, and the first signal and the second signal are transmitted to the first transmission interface 40 and the second transmission interface 50 via the control unit 30, respectively; when the external device is connected to the first transmission interface 40, the external device receives the first signal, and the control unit 30 cuts off the second signal to make the second transmission interface 50 in the non-operating state; when an external device (such as a touch screen) is connected to the second transmission interface 50, the external device can output an analog-digital signal to the signal conversion apparatus 20 through the second transmission interface 50, and the control unit 30 cuts off the first signal to make the first transmission interface 40 in an inoperative state.
In this embodiment, the first transmission interface 40 is a Type-C interface, which has the characteristics of plug and play, and has the function of supporting hot plug, and because the Type-C interface has a small volume, the internal space of the computer can be reduced to a certain extent, and meanwhile, the requirement of two-sided (front and back) plugging can be met, thereby avoiding the situation that the user mistakenly plugs and unplugs; the second transmission interface 50 is an HDMI (high definition multimedia interface) interface, which has a function of supporting hot plug, and the HDMI interface can be used as a connection interface between devices, can simultaneously transmit audio signals, video signals and additional information, and can also be used as an interface arranged inside a computer to realize connection between the computer and an external device; because the HDMI interface is small, can reduce to a certain extent and occupy the inside space of computer.
In other embodiments, the first transmission interface 40 may be a DP (display port) interface, which has a function of supporting hot plug, and the DP interface may be used as a connection interface between devices, may transmit audio and video signals simultaneously, may transmit audio signals or video signals separately, and may also be used as an interface disposed inside a computer to connect the computer with an external device; because the DP interface is the interface with the function of locking, can prevent that the user from pulling out and inserting by mistake, and then avoid the maloperation to lead to the computer hardware to damage.
Because the adopted interfaces have the function of supporting hot plug, the computer video signal control circuit 100 is very convenient to use when being connected with external equipment, and can meet the use requirements of users.
In one embodiment, the control unit 30 further comprises a first switch 31 and a second switch 32; the first terminal of the signal conversion device 20 is electrically connected to the chip 10, the second terminal of the signal conversion device 20 is electrically connected to the first terminal of the first switch 31 and the first terminal of the second switch 32 of the control unit 30, the first transmission interface 40 is electrically connected to the second terminal of the first switch 31, and the second transmission interface 50 is electrically connected to the second terminal of the second switch 32. When the external device is connected to the first transmission interface 40, the external device receives the first signal, and the second switch 32 of the control unit 30 cuts off the second signal to make the second transmission interface 50 in the non-operating state; when the external device is connected to the second transmission interface 50, the first switch 31 of the control unit 30 simultaneously cuts off the first signal to put the first transmission interface 40 in the non-operating state. In this manner, the transmission lines for controlling the first signal and the second signal can be switched in time by the first switch 31 and the second switch 32 of the control unit 30.
In one embodiment, the computer video signal control circuit 100 further comprises a display 60 electrically connected to the chip; the display 60 is capable of receiving the digital signal output by the chip 10 and displaying the digital signal output by the chip 10. In the present embodiment, the display 60 is a liquid crystal display.
In conclusion, the beneficial effects are that: the utility model provides a computer video signal control circuit can transmit high definition video signal, and the interface of adoption has the function that supports hot plug, and convenient to use can satisfy user's user demand.
The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.
Claims (6)
1. A computer video signal control circuit is characterized by comprising a chip, a signal conversion device, a control unit, a first transmission interface and a second transmission interface; the signal conversion device is electrically connected between the chip and the control unit, and the first transmission interface and the second transmission interface are both electrically connected with the control unit; the signal conversion device is used for converting the digital signals output by the chip, the control unit is used for switching and controlling the digital signals of the first transmission interface and the second transmission interface, and the first transmission interface and the second transmission interface are both used for being electrically connected with external equipment.
2. The computer video signal control circuit according to claim 1, wherein the first transmission interface is a Type-C interface; the second transmission interface is an HDMI interface.
3. The computer video signal control circuit of claim 2, wherein the first transmission interface is a DP interface.
4. The computer video signal control circuit of claim 1, wherein the control unit further comprises a first switch and a second switch; the first end of the signal conversion device is electrically connected with the chip, the second end of the signal conversion device is electrically connected with the first end of the first switch and the first end of the second switch of the control unit, the first transmission interface is electrically connected with the second end of the first switch, and the second transmission interface is electrically connected with the second end of the second switch.
5. The computer video signal control circuit of claim 1, further comprising a display electrically connected to the chip; the display is capable of receiving and displaying digital signals.
6. The computer video signal control circuit of claim 5, wherein the display is a liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921629305.3U CN210431690U (en) | 2019-09-27 | 2019-09-27 | Computer video signal control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921629305.3U CN210431690U (en) | 2019-09-27 | 2019-09-27 | Computer video signal control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210431690U true CN210431690U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921629305.3U Active CN210431690U (en) | 2019-09-27 | 2019-09-27 | Computer video signal control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210431690U (en) |
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2019
- 2019-09-27 CN CN201921629305.3U patent/CN210431690U/en active Active
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