CN209250758U - A kind of display circuit for detecting - Google Patents
A kind of display circuit for detecting Download PDFInfo
- Publication number
- CN209250758U CN209250758U CN201822188685.3U CN201822188685U CN209250758U CN 209250758 U CN209250758 U CN 209250758U CN 201822188685 U CN201822188685 U CN 201822188685U CN 209250758 U CN209250758 U CN 209250758U
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- lvds
- signal adapter
- field
- effect tube
- resistance
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Abstract
The utility model relates to a kind of display circuit for detecting, including LVDS screen line interface and LVDS signal adapter and field-effect tube, 6 pins of LVDS screen line interface and the grid of field-effect tube connect, and the source electrode ground connection of field-effect tube, the drain electrode of field-effect tube is connect with the end PD# of LVDS signal adapter；6 pins of LVDS screen line interface are also connected with first resistor, and the other end of first resistor is connect with the end VDDIO1 of LVDS signal adapter, the end VDDIO2 respectively；Detecting LVDS interface by the field-effect tube connecting with LVDS screen line interface, whether there is or not slotting LVDS screen lines, then video output display interface (LVDS screen line interface or HDMI video interface) is automatically selected by hardware or BIOS, field-effect tube is also connected with LVDS signal adapter to convert to vision signal, it matches LVDS screen line interface and exports vision signal, circuit structure is simple, it is at low cost, it is small in size.
Description
Technical field
The utility model relates to computer technology fields, more specifically to a kind of display circuit for detecting.
Background technique
In AMD platform because of the limitation of Vbios, display can only be realized single aobvious before causing booting to enter system, if
It needs to connect display by HDMI screen line or LVDS video line, then needs that display interface is arranged by Setup.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of circuit knot
Structure is simple, at low cost, display circuit for detecting small in size.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
Construct a kind of display circuit for detecting, including LVDS screen line interface and LVDS signal adapter and field-effect tube；Its
It is characterized in that, 6 pins of the LVDS screen line interface are connect with the grid of the field-effect tube, and the source electrode of the field-effect tube connects
The drain electrode on ground, the field-effect tube is connect with the end PD# of the LVDS signal adapter；6 pins of the LVDS screen line interface
Be also connected with first resistor, the other end of the first resistor respectively with the end VDDIO1 of the LVDS signal adapter,
The connection of the end VDDIO2.
Display circuit for detecting described in the utility model, wherein the end DDC_SDA of the LVDS signal adapter is connected with
Second resistance, the end DDC_SCL of the LVDS signal adapter are connected with 3rd resistor, the other end of the second resistance and institute
State the other end connection of 3rd resistor, the end the VDDIO1 company of the other end of the 3rd resistor and the LVDS signal adapter
It connects.
Display circuit for detecting described in the utility model, wherein the end VDDIO1 of the LVDS signal adapter is connected with
The other end of 4th resistance and the 5th resistance, the 4th resistance is connect with the end RST# of the LVDS signal adapter, described
The other end of 5th resistance is connect with the end PD# of the LVDS signal adapter；The other end of 4th resistance is connected with
One capacitor, the other end of the 5th resistance are connected with the second capacitor, the other end of the first capacitor and second capacitor
It is grounded.
The utility model has the beneficial effects that: detecting LVDS interface by the field-effect tube connecting with LVDS screen line interface
Whether there is or not slotting LVDS screen lines, then by hardware or BIOS automatically select video export display interface (LVDS screen line interface or
HDMI video interface), field-effect tube is also connected with LVDS signal adapter to convert to vision signal, matches LVDS screen line
Interface exports vision signal, and circuit structure is simple, at low cost, small in size.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below in conjunction with attached drawing and reality
Applying example, the utility model is described in further detail, and the accompanying drawings in the following description is only section Example of the invention, for this
For the those of ordinary skill of field, without creative efforts, it is attached to can also be obtained according to these attached drawings other
Figure:
Fig. 1 is the circuit diagram of the LVDS screen line interface of the display circuit for detecting of the utility model preferred embodiment；
Fig. 2 is the circuit diagram of the LVDS signal adapter of the display circuit for detecting of the utility model preferred embodiment；
Fig. 3 is the circuit diagram of the 4th resistance and the 5th resistance of the display circuit for detecting of the utility model preferred embodiment.
Specific embodiment
It is practical below in conjunction with this in order to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Technical solution in new embodiment carries out clear, complete description, it is clear that described embodiment is the portion of the utility model
Point embodiment, rather than whole embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art are not paying creation
Property labour under the premise of every other embodiment obtained, belong to the protection scope of the utility model.
The display circuit for detecting of the utility model preferred embodiment is as shown in Figure 1, simultaneously refering to Fig. 2 and Fig. 3, including LVDS
Shield the 6 of line interface LVDS_CON1 and LVDS signal adapter U30 and field-effect tube Q54, LVDS screen line interface LVDS_CON1
Pin is connect with the grid of field-effect tube Q54, the source electrode ground connection of field-effect tube Q54, the drain electrode of field-effect tube Q54 and LVDS signal
The end PD# of converter U30 connects；6 pins of LVDS screen line interface LVDS_CON1 are also connected with first resistor R406, the first electricity
The other end of resistance R406 is connect with the end VDDIO1 of LVDS signal adapter U30, the end VDDIO2 respectively；By being connect with LVDS screen line
Whether there is or not slotting LVDS screen lines for the field-effect tube Q54 detecting LVDS interface of mouth LVDS_CON1 connection, then certainly by hardware or BIOS
Dynamic selection video exports display interface, and field-effect tube Q54 is also connected with LVDS signal adapter U30 to turn to vision signal
It changing, matching LVDS screen line interface LVDS_CON1 exports vision signal, and circuit structure is simple, and it is at low cost, it is small in size.
The display circuit for detecting of the utility model, wherein the end DDC_SDA of LVDS signal adapter U30 is connected with second
The end DDC_SCL of resistance R391, LVDS signal adapter U30 is connected with 3rd resistor R349, the other end of second resistance R391
It is connect with the other end of 3rd resistor R349, the other end of 3rd resistor R349 and the end VDDIO1 of LVDS signal adapter U30
Connection；Circuit is simple, at low cost, small in size.
The display circuit for detecting of the utility model, wherein the end VDDIO1 of LVDS signal adapter U30 is connected with the 4th electricity
Resistance R350 and the 5th resistance R34 6, the other end of the 4th resistance R350 are connect with the end RST# of LVDS signal adapter U30, and the 5th
The other end of resistance R34 6 is connect with the end PD# of LVDS signal adapter U30；The other end of 4th resistance R350 is connected with first
Capacitor C365, the other end of the 5th resistance R34 6 are connected with the second capacitor C364, first capacitor C365 and the second capacitor C364
The other end is grounded；Circuit is simple, at low cost, small in size.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (3)
1. a kind of display circuit for detecting, including LVDS screen line interface and LVDS signal adapter and field-effect tube；Its feature exists
In 6 pins of the LVDS screen line interface are connect with the grid of the field-effect tube, the source electrode ground connection of the field-effect tube, institute
The drain electrode for stating field-effect tube is connect with the end PD# of the LVDS signal adapter；6 pins of the LVDS screen line interface are also connected with
There is first resistor, the other end of the first resistor connects with the end VDDIO1 of the LVDS signal adapter, the end VDDIO2 respectively
It connects.
2. display circuit for detecting according to claim 1, which is characterized in that the DDC_SDA of the LVDS signal adapter
End is connected with second resistance, and the end DDC_SCL of the LVDS signal adapter is connected with 3rd resistor, the second resistance it is another
One end is connect with the other end of the 3rd resistor, the other end of the 3rd resistor and the LVDS signal adapter
The connection of the end VDDIO1.
3. display circuit for detecting according to claim 1, which is characterized in that the end VDDIO1 of the LVDS signal adapter
It is connected with the 4th resistance and the 5th resistance, the other end of the 4th resistance and the end RST# of the LVDS signal adapter connect
It connects, the other end of the 5th resistance is connect with the end PD# of the LVDS signal adapter；The other end of 4th resistance connects
It is connected to first capacitor, the other end of the 5th resistance is connected with the second capacitor, the first capacitor and second capacitor
The other end is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188685.3U CN209250758U (en) | 2018-12-25 | 2018-12-25 | A kind of display circuit for detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188685.3U CN209250758U (en) | 2018-12-25 | 2018-12-25 | A kind of display circuit for detecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209250758U true CN209250758U (en) | 2019-08-13 |
Family
ID=67534602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822188685.3U Active CN209250758U (en) | 2018-12-25 | 2018-12-25 | A kind of display circuit for detecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209250758U (en) |
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2018
- 2018-12-25 CN CN201822188685.3U patent/CN209250758U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Futian District Che Kung Temple Tairan nine road Haisong building B-1303 Patentee after: Shenzhen smart Micro Intelligent Technology Co., Ltd Address before: 518000 Guangdong city of Shenzhen province Futian District Che Kung Temple Tairan nine road Haisong building B-1303 Patentee before: JWIPC TECHNOLOGY DEVELOPMENT Ltd. |