CN220290437U - Display device - Google Patents
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- CN220290437U CN220290437U CN202321640381.0U CN202321640381U CN220290437U CN 220290437 U CN220290437 U CN 220290437U CN 202321640381 U CN202321640381 U CN 202321640381U CN 220290437 U CN220290437 U CN 220290437U
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- 238000001514 detection method Methods 0.000 claims description 51
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003708 edge detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a display device, comprising: n external interfaces, a channel switching circuit, a central processing unit and a display screen; the n external interfaces are respectively and electrically connected with n input ends of the channel switching circuit in a one-to-one correspondence manner, the output end of the channel switching circuit is electrically connected with the first input end of the central processing unit, and the output end of the central processing unit is electrically connected with the display screen; the channel switching circuit is used for electrically connecting the first external interface with the central processing unit, so that the central processing unit receives the display signal transmitted by the first external interface; wherein n is a positive integer greater than or equal to 2; the first external interface is an external interface with signal input in n external interfaces; the central processing unit is used for sending a first display control signal to the display screen according to the display signal, so that the display screen displays the content corresponding to the display signal. The utility model can realize the use of the display devices such as the integrated machine and the like as the expansion screen, and has simple structure.
Description
Technical Field
The utility model relates to the technical field of display, in particular to a display device.
Background
In general computer products, the computer itself is often used as a signal source, such as a personal notebook, an office or home desktop host, and the product is often used as a signal input source to provide display signals to a display screen. Today, there is an increasing variety of computer products, which are displayed products with computer modules, such as all-in-one machines and large-sized screens. The use scenes of the products are often provided with screens, but the screens can only be used for self use, and the application is relatively single.
In addition, fig. 1 is a schematic diagram of a conventional display product with a computer module, referring to fig. 1, most large-size screens with computer modules are provided with a main board with an android and ARM architecture besides the computer modules, and the large-size screens can receive signals input by external devices, so that the display screen displays signals externally accessed, but the complexity of the whole product is improved, so that the whole product contains the parts of a computer, an android main board, display, switching and the like, and a switching circuit is required to be added in the whole product, so that display signals are switched from the computer to the android main board, and the design difficulty is increased.
Disclosure of Invention
The utility model provides a display device, which is used as an expansion screen for a display device such as an all-in-one machine and has a simple structure.
According to an aspect of the present utility model, there is provided a display device including:
n external interfaces, a channel switching circuit, a central processing unit and a display screen;
the n external interfaces are respectively and electrically connected with n input ends of the channel switching circuit in a one-to-one correspondence manner, the output end of the channel switching circuit is electrically connected with a first input end of the central processing unit, and the first output end of the central processing unit is electrically connected with the display screen; wherein n is a positive integer greater than or equal to 2;
the channel switching circuit is used for electrically connecting the first external interface with the central processing unit, so that the central processing unit receives the display signal transmitted by the first external interface; the first external interfaces are external interfaces with signal input in the n external interfaces;
the central processing unit is used for sending a first display control signal to the display screen according to the display signal, so that the display screen displays the content corresponding to the display signal.
Optionally, the channel switching circuit includes a channel switching sub-circuit and n interface detection sub-circuits, the interface detection sub-circuits are in one-to-one correspondence with the external interfaces, the detection end of each interface detection sub-circuit is connected with the corresponding external interface, and the output end of each interface detection sub-circuit is electrically connected with a first input end of the central processing unit;
the n input ends of the channel switching sub-circuit are electrically connected with the n external interfaces in a one-to-one correspondence manner, the output end of the channel switching sub-circuit is electrically connected with the first input end of the central processing unit, and the control end of the channel switching sub-circuit is electrically connected with the second output end of the central processing unit;
the interface detection sub-circuit is used for sending a first signal to the central processing unit when detecting that the connected external interface is connected with the signal;
the central processing unit is used for sending a second signal to the channel switching sub-circuit after receiving the first signal;
the channel switching sub-circuit is used for connecting the first external interface with the central processing unit when receiving the second signal.
Optionally, the display device further includes:
a detection circuit and a controller;
the detection end of the detection circuit is electrically connected with each external interface, the output end of the detection circuit is electrically connected with the first end of the controller, and the second end of the controller is electrically connected with the central processing unit;
the detection circuit is used for detecting signals output by the external interface and sending a third signal to the controller when detecting the electric signals in the preset range;
the controller is used for detecting the state of the central processing unit after receiving the third signal, and sending a wake-up signal to the central processing unit when the central processing unit is in a sleep state or a standby state so as to enable the central processing unit to start running.
Optionally, the display device further includes:
a signal conversion circuit;
the input end of the signal conversion circuit is electrically connected with the output end of the channel switching circuit, and the output end of the signal conversion circuit is electrically connected with the first input end of the central processing unit;
the signal conversion circuit is used for carrying out format conversion on the display signal and transmitting the display signal after format conversion to the central processing unit.
Optionally, the display screen is further configured to display an interface switching interface, where the interface switching interface includes a control of each external interface;
the central processing unit is used for enabling the channel switching subcircuit to connect the second external interface with the central processing unit according to the selected control when the user selects the control in the interface switching interface; the second external interface is an external interface corresponding to the selected control.
Optionally, the channel switching subcircuit includes a multiplexing switch.
Optionally, the external interface includes at least one of an HDMI interface, a TYPE-C interface, and a DP interface.
Optionally, the second input terminal of the central processor includes a GPIO port or an I2C terminal.
The external interface is connected with the channel switching circuit, the channel switching circuit is connected with the central processing unit, when the external interface is provided with signal input, the channel switching circuit directly connects the external interface provided with signal input with the central processing unit, so that the central processing unit can receive display signals input by external equipment, and the central processing unit can control the display screen to display corresponding contents, namely the display device of the embodiment can be used as an expansion screen of other equipment, office convenience is realized, the utilization rate of the display device is improved, the embodiment can be realized on the same main board without adding a signal conversion board card of an ARM architecture and corresponding software, and the integral structure of the display device is simplified.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art display product with a computer module;
FIG. 2 is a schematic diagram of a display device according to the present utility model;
FIG. 3 is a schematic view of yet another display device provided by the present utility model;
FIG. 4 is a schematic view of yet another display device provided by the present utility model;
fig. 5 is a schematic view of still another display device provided by the present utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
An embodiment of the present utility model provides a display device, and fig. 2 is a schematic diagram of the display device provided by the present utility model, and referring to fig. 2, the display device includes:
the device comprises an n external interface 10, a channel switching circuit 20, a central processing unit 30 and a display screen 40;
the n external interfaces 10 are respectively and electrically connected with n input ends of the channel switching circuit 20 in a one-to-one correspondence manner, the output end of the channel switching circuit 20 is electrically connected with a first input end of the central processing unit 30, and a first output end of the central processing unit 30 is electrically connected with the display screen 40; wherein n is a positive integer greater than or equal to 2;
the channel switching circuit 20 is configured to electrically connect the first external interface to the central processing unit 30, so that the central processing unit 30 receives a display signal transmitted by the first external interface; the first external interfaces are external interfaces 10 with signal input in n external interfaces 10;
the central processor 30 is configured to send a first display control signal to the display screen 40 according to the display signal, so that the display screen 40 displays content corresponding to the display signal.
Specifically, the display device of this embodiment may be an all-in-one machine, or may be a large-size display product. The external interface 10 may be an HDMI interface, a TYPE-C interface, a DP interface, or the like, and the present embodiment is not particularly limited. The at least two external interfaces 10 may be the same type of interfaces, or may be different types of interfaces, and the embodiment is not limited in particular. The number of external interfaces 10 may be 2, 3 or more than 3. The external interface 10 is used for connecting with an external device and receiving a display signal input by the external device. The central processing unit 30, i.e. CPU, and the display screen 40 is used for displaying pictures. The channel switching circuit 20 can detect which external interface 10 has a signal input, and electrically connect the external interface 10 having the signal input with the central processing unit 30.
The external interface 10 is connected with the channel switching circuit 20, the channel switching circuit 20 is connected with the central processing unit 30, when the external interface 10 is provided with signal input, the channel switching circuit 20 directly connects the external interface 10 provided with signal input with the central processing unit 30, so that the central processing unit 30 can receive display signals input by external equipment, and the central processing unit 30 can control the display screen 40 to display corresponding contents, namely, the display device of the embodiment can be used as an expansion screen of other equipment, thereby realizing office convenience and improving the utilization rate of the display device, and the embodiment can be realized on the same main board without adding a signal conversion board card of ARM architecture and corresponding software, thereby simplifying the integral architecture of the display device.
It should be noted that, fig. 2 only illustrates two external interfaces by way of example, and the present utility model is not limited thereto.
Fig. 3 is a schematic diagram of another display device provided in the present utility model, referring to fig. 3, optionally, the channel switching circuit 20 includes a channel switching sub-circuit 22 and n interface detection sub-circuits 21, the interface detection sub-circuits 21 are in one-to-one correspondence with the external interfaces 10, the detection end of each interface detection sub-circuit 21 is connected with the corresponding external interface 10, and the output end of each interface detection sub-circuit 21 is electrically connected with a first input end of the central processor 30;
the n input ends of the channel switching sub-circuit 22 are electrically connected with the n external interfaces 10 in a one-to-one correspondence manner, the output end of the channel switching sub-circuit 22 is electrically connected with the first input end of the central processing unit 30, and the control end of the channel switching sub-circuit 22 is electrically connected with the second output end of the central processing unit 30;
the interface detection sub-circuit 21 is configured to send a first signal to the central processing unit 30 when detecting that a signal is received from the external interface 10 connected thereto;
the central processing unit 30 is configured to send a second signal to the channel switching sub-circuit 22 after receiving the first signal;
the channel switching sub-circuit 22 is configured to connect the first external interface to the central processing unit 30 when receiving the second signal.
Specifically, when the external interface 10 is connected to an external device, the voltage or current on the external interface 10 will change, and it can be determined whether the external device is connected by detecting the voltage or current on the external interface 10. The interface detection sub-circuit 21 may include a voltage detection circuit for determining whether the external interface 10 has a signal input by detecting the voltage of the external interface 10, for example. The different interface detection sub-circuits 21 may be electrically connected to different first input ends of the central processing unit 30, when signals are input to different external interfaces 10, the different interface detection sub-circuits 21 detect the signals, the different first input ends of the central processing unit 30 receive the first signals, the central processing unit 30 outputs different second signals to the channel switching sub-circuit 22, and the channel switching sub-circuit 22 connects the corresponding external interfaces 10 with the central processing unit 30 according to the second signals.
In this embodiment, by providing the interface detection sub-circuit 21 and the channel switching sub-circuit 22, the external interface 10 to which the external device is connected can be automatically detected, and the connection channel between the external interface 10 and the central processing unit 30 can be switched.
Fig. 4 is a schematic view of still another display device provided in the present utility model, and referring to fig. 4, optionally, the display device further includes:
a detection circuit 50 and a controller 60;
the detection end of the detection circuit 50 is electrically connected with each external interface 10, the output end of the detection circuit 50 is electrically connected with the first end of the controller 60, and the second end of the controller 60 is electrically connected with the central processing unit 30;
the detection circuit 50 is configured to detect a signal output by the external interface, and send a third signal to the controller 60 when detecting an electrical signal within a preset size range;
the controller 60 is configured to detect a state of the central processing unit 30 after receiving the third signal, and send a wake-up signal to the central processing unit 30 when the central processing unit 30 is in a sleep state or a standby state, so that the central processing unit 30 starts to operate.
Specifically, the standby state and the sleep state refer to a state in which the display device is turned on, but does not perform any substantial work (i.e., does not perform various operations on files and programs), at which time the cpu 30 stops executing instructions, and the contents of the memory remain in the memory as they are. The detection circuit 50 may include a detection end, where one detection end is electrically connected to all external interfaces 10, and when any external interface 10 is connected to an external device, the detection circuit 50 can detect an electrical signal with a preset size. The controller 60 may be electrically connected to the wake-up terminal of the cpu 30, and when the controller 60 receives the third signal, the controller detects the working state of the cpu 30 through triggering or edge detection, and if the cpu 30 is in the running state, the wake-up signal does not need to be sent. If the central processing unit 30 is in a sleep state or a standby state, a wake-up signal is sent to enable the central processing unit 30 to start operation, so that the whole display device starts operation, and the display screen 40 normally displays display contents input by external equipment.
In this embodiment, the detection circuit 50 is provided to detect the states of all external interfaces 10 at the same time, and when any external interface 10 is connected to an external device, the controller 60 detects the state of the central processor 30, wakes up the central processor 30 in a sleep or standby state, wakes up the whole display device, so that the display content of the external device is displayed normally, i.e., the embodiment can wake up the display device automatically, so as to realize the normal display of the display content input by the external device. In addition, in the display device of this embodiment, only the detection circuit 50 works when in a sleep or standby state, and the detection circuit 50 is connected with all external interfaces 10 at the same time, one detection circuit 50 can detect the device access states of all external interfaces 10, so as to wake up the central processing unit 30, and reduce power consumption.
Optionally, the detection circuit 50 includes a voltage detection circuit;
the electrical signal of the preset size range is a voltage signal of the preset size range.
For example, when the external interface 10 is an HDMI interface, the HDMI signal input by the external device connected to the external interface 10 has a voltage signal of 5V, and after the external device is connected, the detection circuit 50 may detect the voltage signal of 5V.
Fig. 5 is a schematic view of still another display device provided in the present utility model, and referring to fig. 5, optionally, the display device further includes:
a signal conversion circuit 70;
the input end of the signal conversion circuit 70 is electrically connected with the output end of the channel switching circuit 20, and the output end of the signal conversion circuit 70 is electrically connected with the first input end of the central processing unit 30;
the signal conversion circuit 70 is configured to perform format conversion on the display signal, and transmit the display signal after the format conversion to the central processing unit 30.
Specifically, when the signal format recognizable by the external interface 10 is different from the signal format recognizable by the central processing unit 30, the signal conversion circuit 70 may convert the display signal accessed by the external interface 10 into a signal having a format recognizable by the central processing unit 30. For example, when the external interface 10 is an HDMI interface, the signal transmitted by the external interface 10 is a TMDS format signal, and the signal identifiable by the central processor 30 is a CSI format signal, and the signal conversion circuit 70 may convert the TMDS format signal into the CSI format signal. The embodiment of the utility model improves the display compatibility and can more conveniently check the problem of the display device.
Optionally, the display screen 40 is further configured to display an interface switching interface, where the interface switching interface includes a control of each external interface;
when the central processing unit 30 is used for selecting a control in the interface switching interface by a user, the channel switching sub-circuit 32 is caused to connect the second external interface with the central processing unit 30 according to the selected control; the second external interface is the external interface 10 corresponding to the selected control.
Specifically, the display screen 40 may display an interface switching interface, and the user may select the external interface 10 to be connected in the interface switching interface. When the second external interface 10 is the external interface 10 to which the central processor 10 is currently connected, the central processor 30 does not need to send a signal to the channel switching sub-circuit 22. When the second external interface is not the external interface 10 currently connected to the central processor 30, the central processor 30 generates a corresponding second signal according to the selected control, and sends the second signal to the channel switching sub-circuit 22, and the channel switching sub-circuit 22 switches the external interface 10 connected to the central processor 30 according to the second signal, so that the second external interface is connected to the central processor 30. When the external interfaces 10 selected by the user are different, the second signals sent by the central processor 30 to the channel switching sub-circuit 22 are different, and the channel switching sub-circuit 22 electrically connects the corresponding external interfaces 10 with the central processor 30 according to the second signals.
Optionally, the channel switching sub-circuit 21 comprises a multiplexing switch. The multiple-way selector switch may include a plurality of input terminals, an output terminal and a control terminal, where the plurality of input terminals are electrically connected to the plurality of external interfaces 10, the output terminal is electrically connected to the signal conversion circuit 70, and the control terminal is electrically connected to the central processor 30. When the second signals received by the control end are different, the input end connected with the output end in the multi-path selection switch is different, namely, the external interface 10 connected with the output end is different.
Optionally, the external interface 10 includes at least one of an HDMI interface, a TYPE-C interface, and a DP interface.
Specifically, the type of the external interface 10 can be set according to the needs, so as to meet different use requirements.
Optionally, the second input of the central processor 30 comprises a GPIO port or an I2C terminal. The GPIO port or I2C port may be reserved in the central processing unit and connected to the interface detection subcircuit 21.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present utility model may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present utility model are achieved, and the present utility model is not limited herein.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. A display device, comprising:
n external interfaces, a channel switching circuit, a central processing unit and a display screen;
the n external interfaces are respectively and electrically connected with n input ends of the channel switching circuit in a one-to-one correspondence manner, the output end of the channel switching circuit is electrically connected with the first input end of the central processing unit, and the first output end of the central processing unit is electrically connected with the display screen; wherein n is a positive integer greater than or equal to 2;
the channel switching circuit is used for electrically connecting a first external interface with the central processing unit, so that the central processing unit receives display signals transmitted by the first external interface; the first external interfaces are external interfaces with signal input in the n external interfaces;
the central processing unit is used for sending a first display control signal to the display screen according to the display signal, so that the display screen displays the content corresponding to the display signal.
2. The display device of claim 1, wherein the display device comprises a display device,
the channel switching circuit comprises a channel switching sub-circuit and n interface detection sub-circuits, the interface detection sub-circuits are in one-to-one correspondence with the external interfaces, the detection end of each interface detection sub-circuit is connected with the corresponding external interface, and the output end of each interface detection sub-circuit is electrically connected with one first input end of the central processing unit;
the n input ends of the channel switching sub-circuit are electrically connected with the n external interfaces in a one-to-one correspondence manner, the output end of the channel switching sub-circuit is electrically connected with the first input end of the central processing unit, and the control end of the channel switching sub-circuit is electrically connected with the second output end of the central processing unit;
the interface detection sub-circuit is used for sending a first signal to the central processing unit when detecting that a signal is connected to an external interface connected with the interface detection sub-circuit;
the central processing unit is used for sending a second signal to the channel switching subcircuit after receiving the first signal;
the channel switching sub-circuit is used for connecting the first external interface with the central processing unit when the second signal is received.
3. The display device according to claim 1, further comprising:
a detection circuit and a controller;
the detection end of the detection circuit is electrically connected with each external interface, the output end of the detection circuit is electrically connected with the first end of the controller, and the second end of the controller is electrically connected with the central processing unit;
the detection circuit is used for detecting signals output by the external interface and sending a third signal to the controller when detecting an electric signal in a preset range;
the controller is used for detecting the state of the central processing unit after receiving the third signal, and sending a wake-up signal to the central processing unit when the central processing unit is in a sleep state or a standby state so as to enable the central processing unit to start running.
4. The display device according to claim 1, further comprising:
a signal conversion circuit;
the input end of the signal conversion circuit is electrically connected with the output end of the channel switching circuit, and the output end of the signal conversion circuit is electrically connected with the first input end of the central processing unit;
the signal conversion circuit is used for carrying out format conversion on the display signals and transmitting the display signals with the converted formats to the central processing unit.
5. The display device according to claim 2, wherein:
the display screen is also used for displaying an interface switching interface, and the interface switching interface comprises a control of each external interface;
the central processing unit is used for enabling the channel switching subcircuit to connect the second external interface with the central processing unit according to the selected control when the user selects the control in the interface switching interface; the second external interface is an external interface corresponding to the selected control.
6. The display device according to claim 2, wherein:
the channel switching sub-circuit includes a multiplexing switch.
7. The display device according to claim 1, wherein:
the external interface comprises at least one of an HDMI interface, a TYPE-C interface and a DP interface.
8. The display device according to claim 2, wherein:
the second input terminal of the central processing unit comprises a GPIO port or an I2C terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321640381.0U CN220290437U (en) | 2023-06-26 | 2023-06-26 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321640381.0U CN220290437U (en) | 2023-06-26 | 2023-06-26 | Display device |
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| Publication Number | Publication Date |
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| CN220290437U true CN220290437U (en) | 2024-01-02 |
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| CN202321640381.0U Active CN220290437U (en) | 2023-06-26 | 2023-06-26 | Display device |
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| CN (1) | CN220290437U (en) |
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2023
- 2023-06-26 CN CN202321640381.0U patent/CN220290437U/en active Active
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