CN213715912U - Circuit board and vehicle-mounted equipment - Google Patents
Circuit board and vehicle-mounted equipment Download PDFInfo
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- CN213715912U CN213715912U CN202023279299.9U CN202023279299U CN213715912U CN 213715912 U CN213715912 U CN 213715912U CN 202023279299 U CN202023279299 U CN 202023279299U CN 213715912 U CN213715912 U CN 213715912U
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Abstract
The application relates to a circuit board and vehicle-mounted equipment. Wherein, the circuit board includes: the device comprises a control circuit, a protocol conversion circuit, a first protocol display screen interface and a second protocol display screen interface; wherein: the control circuit comprises a first display controller and a second display controller, and the first display controller is electrically connected with the first protocol display screen interface; the protocol conversion circuit is electrically connected between the second display controller and the second protocol display screen interface and is used for converting the display control signal output by the second display controller into the display control signal of the second protocol display screen interface. By the scheme provided by the application, the purpose that one hardware mainboard is adaptive to different display screens and different application scenes can be achieved; meanwhile, the cost of hardware development and maintenance is reduced, and hardware management and maintenance are facilitated.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a circuit board and vehicle-mounted equipment.
Background
Two types of display screens of vehicle-mounted multimedia equipment (vehicle machine) are commonly used: a Mobile Industry Processor Interface (MIPI) Interface display screen with 30 pins and a Low-Voltage Differential Signaling (LVDS) Interface display screen with 40 pins; in the related art, two sets of motherboards are usually required to be designed for the vehicle-mounted multimedia device to respectively correspond to the MIPI interface display screen and the LVDS interface display screen, and because of different screen interfaces, hardware workers of companies need to design and maintain two hardware versions, so that not only is the cost high, but also corresponding troubles are brought to hardware management and designers.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art, the application provides a circuit board which can realize the purpose that one hardware mainboard is adaptive to different display screens and different application scenes; meanwhile, the cost of hardware development and maintenance is reduced, and hardware management and maintenance are facilitated.
A first aspect of the present application provides a circuit board, comprising: the device comprises a control circuit, a protocol conversion circuit, a first protocol display screen interface and a second protocol display screen interface; wherein: the control circuit comprises a first display controller and a second display controller, and the first display controller is electrically connected with the first protocol display screen interface; the protocol conversion circuit is electrically connected between the second display controller and the second protocol display screen interface and is used for converting the display control signal output by the second display controller into the display control signal of the second protocol display screen interface.
The circuit board provided by the first aspect of the application comprises a control circuit, a protocol conversion circuit, a first protocol display screen interface and a second display screen interface. The control circuit comprises a first display controller and a second display controller, the first display controller is electrically connected with the first protocol display screen interface, and a protocol conversion circuit is electrically connected between the second display controller and the second protocol display screen interface. Therefore, when the display screen is electrically connected with the first protocol display screen interface, the first display controller directly outputs the display control signal of the first protocol display screen interface; when the display screen is electrically connected with the second protocol display screen interface, the protocol conversion circuit can convert the display control signal output by the second display controller into the display control signal of the second protocol display screen interface, so that the purpose of simultaneously adapting to different display screens and different application scenes through one circuit board can be realized, the hardware development and maintenance cost is effectively reduced, and the hardware management and maintenance are convenient.
According to an embodiment of the application, the circuit board further comprises: and the screen is electrically connected between the second protocol display screen interface and the control circuit and is connected with a detection signal line.
In some embodiments, the output display circuit main board further comprises: the control circuit comprises an input end with a pull-up resistor, and the second protocol display screen interface is provided with an electric connection end used for connecting a grounding end of the display screen; one end of the screen connecting detection signal wire is electrically connected with the input end of the control chip, and the other end of the screen connecting detection signal wire is connected with the electrical connection end of the second protocol display screen interface.
In some embodiments, the control circuit includes a control chip, the first display controller and the second display controller being integrated within the control chip.
In some embodiments, the control chip includes an input pin and an output pin, the input pin has a pull-up resistor, the second protocol display screen interface has an electrical connection terminal for connecting to a ground terminal of a display screen, one end of the screen connection detection signal line is electrically connected to the input pin of the control chip, and the other end of the screen connection detection signal line is electrically connected to the electrical connection terminal of the second protocol display screen interface.
In some embodiments, the circuit board further comprises: and the protocol conversion circuit enables the signal wire which is electrically connected between the protocol conversion circuit and the control circuit.
In some embodiments, the protocol conversion circuit includes a protocol conversion chip, and the circuit board includes a protocol conversion circuit enable signal line electrically connected between an output pin of the control chip and an input pin of the protocol conversion chip.
In some embodiments, the first protocol display screen interface is a MIPI interface, the second protocol display screen interface is a LVDS interface, and the first display controller and the second display controller are MIPI controllers.
In some embodiments, the first display controller and the second display controller are configured to each output a display control signal of the first protocol display screen interface; or, configured to output display control signals of different protocols.
The second aspect of the present application provides an in-vehicle apparatus, comprising: a display screen; and the circuit board according to any one of the embodiments of the first aspect, wherein the display screen is electrically connected to the first protocol display screen interface or the second protocol display screen interface of the circuit board.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic structural diagram of a circuit board according to an embodiment of the present application;
fig. 2 is a block diagram schematically illustrating a structure of an in-vehicle device according to an embodiment of the present application.
Description of reference numerals:
1. an in-vehicle device; 10. a display screen; 20. a circuit board; 201. a control circuit; 2011. a first display controller; 2012. a second display controller; 30. a first protocol display screen interface; 40. a second protocol display screen interface; 50. a protocol conversion circuit; 60. the protocol conversion circuit enables the signal line; 70. the screen is connected with the detection signal line.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "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 application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The display screen of the vehicle-mounted multimedia equipment (vehicle machine) usually has two different display screen interface forms, so two sets of main boards need to be designed to respectively correspond to the two different display screen interface forms, the cost is higher, and the hardware management and maintenance efficiency is low.
The embodiment of the application provides a circuit board, which can achieve the purpose that one hardware mainboard is adaptive to different display screens and different application scenes; meanwhile, the cost of hardware development and maintenance can be reduced, and hardware management and maintenance are facilitated.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a circuit board 20 according to an embodiment of the present application.
Referring to fig. 1, the circuit board 20 of the present embodiment includes a control circuit 201, a protocol conversion circuit 50, a first protocol display screen interface 30, and a second protocol display screen interface 40; the control circuit 201 includes a first display controller 2011 and a second display controller 2012, the first display controller 2011 is electrically connected to the first protocol display screen interface 30; the protocol conversion circuit 50 is electrically connected between the second display controller 2012 and the second protocol display interface 40, and is configured to convert the display control signal output by the second display controller 2012 into the display control signal of the second protocol display interface 40.
The circuit board 20 of this embodiment is formed by integrally providing a first display controller 2011, a second display controller 2012, a first protocol display interface 30 and a second protocol display interface 40 on the circuit board 20, wherein the first display controller 2011 is electrically connected to the first protocol display interface 30, a protocol conversion circuit 50 is electrically connected between the second display controller 2012 and the second protocol display interface 40, and the protocol conversion circuit 50 can convert a display control signal output by the second display controller 2012 into a display control signal of the second protocol display interface 40. Thus, when the display screen 10 is electrically connected to the first protocol display screen interface 30, the first display controller 2011 directly outputs the display control signal of the first protocol display screen interface 30; when the display screen 10 is electrically connected to the second protocol display screen interface 40, the protocol conversion circuit 50 converts the display control signal output by the second display controller 2012 into the display control signal of the second protocol display screen interface 40, so that the purpose of simultaneously adapting to different display screens 10 and different application scenes through one circuit board 20 can be achieved, the cost of hardware development and maintenance is effectively reduced, and hardware management and maintenance are facilitated.
According to one embodiment of the present application, the circuit board 20 further includes: a protocol conversion circuit enable signal line 60 electrically connected between the protocol conversion circuit 50 and the control circuit 201, and a screen connection detection signal line 70 electrically connected between the second protocol display screen interface 40 and the control circuit 201. The first protocol display screen interface 30 is an MIPI interface, the second protocol display screen interface 40 is an LVDS interface, the first display controller 2011 and the second display controller 2012 are both MIPI display controllers, and both output display control signals of the MIPI protocol, and the protocol conversion circuit 50 can convert the display control signals of the MIPI protocol output by the second display controller 2012 into display control signals of the LVDS protocol.
The working principle of this particular embodiment is described as follows: the screen connection detection signal line 70 is electrically connected between the second protocol display screen interface 40 and the control circuit 201, and is used for providing a screen connection detection signal indicating whether the second protocol display screen interface 40 is connected with the display screen 10 to the control circuit 201. When the LVDS interface display screen 10 is connected to the second protocol display screen interface 40, the screen connection detection signal detected by the control circuit 201 is a preset first detection signal, at this time, the control circuit 201 enables the second display controller 2012 to output the display control signal of the MIPI protocol, and outputs the preset first enable control signal to the protocol conversion circuit 50 through the protocol conversion circuit enable signal line 60, so as to enable the protocol conversion circuit 50, and the protocol conversion circuit 50 converts the display control signal of the MIPI protocol output by the second display controller 2012 into the display control signal of the LVDS protocol, and outputs the display control signal to the second protocol display screen interface 40, so that the LVDS interface display screen 10 can display. When the display screen 10 without the LVDS interface is connected to the second protocol display screen interface 40, the screen connection detection signal detected by the control circuit 201 is a preset second detection signal, at this time, the control circuit 201 outputs a preset second enable control signal to the protocol conversion circuit 50, disables the protocol conversion circuit 50, and enables the first display controller 2011 to output a display control signal of the MIPI protocol to the first protocol display screen interface 30, so that the MIPI interface display screen 10 displays when the first protocol display screen interface 30 is connected to the MIPI display screen 10.
In one embodiment, the control circuit 201 includes an input terminal having a pull-up resistor, and the second protocol display screen interface 40 has an electrical connection terminal for connecting to the ground terminal of the LVDS interface display screen 10; one end of the screen connection detection signal line 70 is electrically connected to the input terminal of the control circuit 201, and the other end is electrically connected to the electrical connection terminal of the second protocol display screen interface 40.
When the second protocol display screen interface 40 is not connected to the LVDS interface display screen 10, the pull-up resistor of the input terminal of the control circuit 201 pulls up the level of the input terminal, that is, the second detection signal detected by the control circuit 201 is a high level signal, the control circuit 201 outputs a second enable control signal (for example, a low level signal) to the protocol conversion circuit 50, and disables the protocol conversion circuit 50; when the second protocol display screen interface 40 is connected to the LVDS interface display screen 10, the electrical connection terminal of the second protocol display screen interface 40 is electrically connected to the ground terminal of the display screen 10, so that the input terminal of the control circuit 201 can be set to be low, that is, the first detection signal detected by the control circuit 201 is a low level signal, and the control circuit 201 outputs a first enable control signal (for example, a high level signal) to the protocol conversion circuit 50, so as to enable the protocol conversion circuit 50, thereby implementing the desired function.
It is understood that in some embodiments, the control circuit 201 includes a control chip, and the first display controller 2011 and the second display controller 2012 are integrated within the control chip.
The first display controller 2011 and the second display controller 2012 are both MIPI controllers and are integrated in the control chip of the control circuit 201, so that the integration level of the product is improved.
In some embodiments, the input terminal of the pull-up resistor of the control circuit 201 may be an input pin of the control chip having a built-in pull-up resistor, and the control chip may output the enable control signal to the protocol conversion circuit 50 through an output pin.
In some embodiments, the protocol conversion circuit 50 includes a protocol conversion chip for converting the display control signal of the MIPI protocol into the display control signal of the LVDS protocol, and one end of the protocol conversion circuit enable signal line 60 is electrically connected to an output pin of the control chip and the other end is electrically connected to one input pin of the protocol conversion chip.
It should be understood that, in the present application, an input pin refers to a pin having an input function, and includes a pin having only an input function and also includes a pin having both an input function and an output function. The output pins refer to pins having an output function, and include pins having only an output function and pins having both input and output functions.
In the above-described embodiment, the first display controller 2011 and the second display controller 2012 are configured to both output display control signals of the same protocol; it will be appreciated that in some embodiments, both may also be configured to output display control signals of different protocols.
Fig. 2 is a block diagram schematically illustrating the structure of the in-vehicle apparatus 1 according to the embodiment of the present application.
Referring to fig. 2, a second aspect of the present application provides an in-vehicle apparatus 1 including: a display screen 10 and a circuit board 20 as described in any of the embodiments of the first aspect, the display screen 10 being electrically connected to the first protocol display screen interface 30 or the second protocol display screen interface 40 of the circuit board 20.
The vehicle-mounted device 1 provided by the second aspect of the present application includes the circuit board 20 described in any one of the embodiments of the first aspect, so that the technical effects described in any one of the embodiments are achieved, and details are not repeated here.
To sum up, the circuit board that this application provided can realize through the purpose of different display screens of a circuit board simultaneous adaptation and different application scenes, has effectively reduced the cost of hardware development and maintenance, and is convenient for the management and the maintenance of hardware.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A circuit board, comprising:
the device comprises a control circuit, a protocol conversion circuit, a first protocol display screen interface and a second protocol display screen interface; wherein:
the control circuit comprises a first display controller and a second display controller, and the first display controller is electrically connected with the first protocol display screen interface;
the protocol conversion circuit is electrically connected between the second display controller and the second protocol display screen interface and is used for converting the display control signal output by the second display controller into the display control signal of the second protocol display screen interface.
2. The circuit board of claim 1, further comprising:
and the screen is electrically connected between the second protocol display screen interface and the control circuit and is connected with a detection signal line.
3. The circuit board of claim 2,
the control circuit comprises an input end with a pull-up resistor, and the second protocol display screen interface is provided with an electric connection end used for connecting a grounding end of the display screen;
one end of the screen connecting detection signal wire is electrically connected with the input end of the control circuit, and the other end of the screen connecting detection signal wire is electrically connected with the electric connection end of the second protocol display screen interface.
4. The circuit board of claim 2,
the control circuit comprises a control chip, and the first display controller and the second display controller are integrated in the control chip.
5. The circuit board of claim 4,
the control chip comprises an input pin, the input pin is provided with a pull-up resistor, the second protocol display screen interface is provided with an electric connection end used for connecting a grounding end of the display screen, one end of the screen, which is connected with the detection signal line, is electrically connected with the input pin of the control chip, and the other end of the screen, which is connected with the detection signal line, is electrically connected with the electric connection end of the second protocol display screen interface.
6. The circuit board of claim 2, further comprising:
and the protocol conversion circuit enables the signal wire which is electrically connected between the protocol conversion circuit and the control circuit.
7. The circuit board of claim 5,
the protocol conversion circuit comprises a protocol conversion chip, and the circuit board comprises a protocol conversion circuit enabling signal wire which is electrically connected between an output pin of the control chip and an input pin of the protocol conversion chip.
8. Circuit board according to any of claims 1 to 7,
the first protocol display screen interface is an MIPI interface, the second protocol display screen interface is an LVDS interface, and the first display controller and the second display controller are MIPI controllers.
9. Circuit board according to any of claims 1 to 7,
the first display controller and the second display controller are configured to each output a display control signal of the first protocol display screen interface; or, configured to output display control signals of different protocols.
10. An in-vehicle apparatus, characterized by comprising:
a display screen; and
the circuit board of any one of claims 1 to 9, the display electrically connected with a first protocol display interface or a second protocol display interface of the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023279299.9U CN213715912U (en) | 2020-12-29 | 2020-12-29 | Circuit board and vehicle-mounted equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023279299.9U CN213715912U (en) | 2020-12-29 | 2020-12-29 | Circuit board and vehicle-mounted equipment |
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| CN213715912U true CN213715912U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023279299.9U Active CN213715912U (en) | 2020-12-29 | 2020-12-29 | Circuit board and vehicle-mounted equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682234A (en) * | 2021-08-23 | 2021-11-23 | 南京领行科技股份有限公司 | Vehicle host |
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- 2020-12-29 CN CN202023279299.9U patent/CN213715912U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682234A (en) * | 2021-08-23 | 2021-11-23 | 南京领行科技股份有限公司 | Vehicle host |
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