Channel switching device and transmission system
By designing a channel switching device connected by switchable channel group, the problem of different interface standards for different electronic devices is solved, and the interface of a single display device is compatible with multiple devices is realized, reducing the user's use complexity and cost.
Patent Information
- Application Number
- CN202420642828.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Electronic devices produced by different manufacturers adopt different interface standards, which leads to the need to be equipped with multiple interface types, which increases cost and complexity, and makes users inconvenient to use, so they need to frequently replace adapters or adapters.
A channel switching device is designed, including a first interface, a second interface and a third interface. It is connected to the display device through a switchable first channel group and a second channel group, and can switch between the first and second states to adapt to the interface standards of different electronic devices.
The interface standard for a single display device to be compatible with multiple electronic devices is realized, reducing the need for users to replace adapters, reducing costs and complexity, and improving the system's response speed and real-time processing capabilities.
Smart Images
Figure CN222784890U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electronic equipment, and in particular to a channel switching device and a transmission system. Background Art
[0002] Since electronic devices produced by different manufacturers may adopt different interface standards, display devices have to be equipped with multiple interface types in order to be compatible with the connection requirements of various devices. This phenomenon not only increases the cost and complexity of display devices, but may also cause inconvenience to users, such as the need to frequently replace adapters or converters. Utility Model Content
[0003] The embodiments of the present application provide the following technical solutions:
[0004] In a first aspect, the present application provides a channel switching device comprising: a first interface for connecting a first electronic device; a second interface for connecting a second electronic device; a third interface connected to the first interface through a first channel group and connected to the second interface through a second channel group, the third interface being used to connect a display device; wherein, in a first state, the first interface and the third interface can transmit data through the first channel group; in a second state, the second interface and the third interface can transmit data through the second channel group; the first state and the second state can be switched.
[0005] In some embodiments of the present application, the channel switching device also includes: a third channel group, the third channel group is respectively connected to the first interface, the second interface and the third interface; the third channel group can switch the first state or the second state according to an access request signal from the first electronic device or the second electronic device.
[0006] In some embodiments of the present application, the third channel group includes a switch module, which is arranged close to the third interface; the switch module is used to conduct the electrical connection between the first interface and the third interface in the first state, and to conduct the electrical connection between the second interface and the third interface in the second state.
[0007] In some embodiments of the present application, the third channel group further includes a control signal line; the control signal line is respectively connected to the third interface and the switch module, and the display device can control the level of the switch module through the control signal line.
[0008] In some embodiments of the present application, the first channel group includes a first identification transmission signal line, which is respectively connected to the first interface and the third interface, and is used to receive an access request signal of the first electronic device; the second channel group includes a second identification transmission signal line, which is respectively connected to the second interface and the third interface, and is used to receive an access request signal of the second electronic device; the switch module switches the first state or the second state through the access request signals of the first identification transmission signal line and the second identification transmission signal line.
[0009] In some embodiments of the present application, the first channel group includes a first data transmission signal line, and the second channel group includes a second data transmission signal line; the first data transmission signal line and the second data transmission signal line can converge at one point and be connected to the third interface; wherein the first data transmission signal line and the second data transmission signal line transmit the same type of data.
[0010] In some embodiments of the present application, the channel switching device further includes: a signal amplifying unit, which is respectively connected to the first data transmission signal line and the second data transmission signal line, and the signal amplifying unit is arranged close to the third interface.
[0011] In some embodiments of the present application, the channel switching device also includes: a shell and a carrier; wherein the carrier is arranged in the shell, and the first channel group, the second channel group and the third channel group are arranged on the carrier; the first interface, the second interface and the third interface are arranged on the shell.
[0012] In some embodiments of the present application, the shell includes a first end and a second end opposite to each other, the third interface is arranged at the first end, and the first interface and the second interface are arranged at intervals at the second end.
[0013] The second aspect of the present application provides a transmission system, including a channel switching device, a display device, a first electronic device, and a second electronic device; the channel switching device includes: a first interface for connecting the first electronic device; a second interface for connecting the second electronic device; a third interface connected to the first interface through a first channel group, and connected to the second interface through a second channel group, and the third interface is used to connect the display device; wherein, in a first state, the first interface and the third interface can transmit data through the first channel group; in a second state, the second interface and the third interface can transmit data through a second channel; the first state and the second state can be switched; the third interface of the channel switching device is connected to the display device, the first interface is connected to the first electronic device, and the second interface is connected to the second electronic device. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0015] Figure 1 The internal principle diagram of the OPS adapter board in the prior art is schematically shown;
[0016] Figure 2 The internal principle diagram of the channel switching device of the present application is schematically shown;
[0017] Figure 3 A top view of the channel switching device of the present application is schematically shown;
[0018] Figure 4 for Figure 3 Side view of.
[0019] Description of Figure Numbers:
[0020] 100, OPS interface; 200, power interface; 300, input interface;
[0021] 1. First interface; 2. Second interface; 3. Third interface; 4. First channel group; 401. First identification transmission signal line; 402. First data transmission signal line; 403. Third data transmission signal line; 5. Second channel group; 501. Second identification transmission signal line; 502. Second data transmission signal line; 503. Fourth data transmission signal line; 6. Third channel group; 601. Switch module; 602. Control signal line; 603. First power transmission signal line; 604. Second power transmission signal line; 605. Third power transmission signal line; 7. Signal amplification unit; 8. Shell. DETAILED DESCRIPTION
[0022] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.
[0024] With the development of digital display technology, high-resolution smart large screens are becoming popular in various fields. Existing technology has introduced OPS (Open Pluggable Specification), which is a modular interface that can embed modules with complete computing capabilities directly into large-screen displays to achieve integration and convenient upgrades. The schematic diagram of a common OPS adapter board, such as Figure 1 As shown, it includes an OPS interface 100 adapted to the OPS, a power interface 200 connected to the power supply, and an input interface 300 connected to the display device, wherein data transmission can be achieved through related circuits such as HDMI, USB, etc. between the OPS interface and the input interface.
[0025] However, in actual applications, in addition to OPS modules, there are also low-cost, compact devices such as Tiny PC (Tiny Personal Computer) on the market, which can also achieve integration and convenient upgrades. However, due to its non-standard design, Tiny PC is not compatible with large-screen display devices that are only equipped with OPS interfaces. As a result, Tiny PC cannot achieve plug-and-play with large-screen display devices that only support OPS interfaces, which in turn means that users must follow the limitations of OPS interfaces or Tiny interfaces when choosing hardware platforms. Even if the Tiny module has special functions that the OPS module does not support, these advantageous functions will not be available, which limits the terminal product in terms of functional richness and technological advancement, affecting the competitiveness of the final product.
[0026] Example 1
[0027] In order to solve the problems existing in the prior art, the embodiments of the present application provide a channel switching device, such as Figure 2 As shown, it includes: a first interface 1, used to connect a first electronic device; a second interface 2, used to connect a second electronic device; a third interface 3, connected to the first interface 1 through a first channel group 4, connected to the second interface 2 through a second channel group 5, and the third interface 3 is used to connect a display device; wherein, in a first state, the first interface 1 and the third interface 3 can transmit data through the first channel group 4; in a second state, the second interface 2 and the third interface 3 can transmit data through the second channel group 5; the first state and the second state can be switched.
[0028] Through the first interface 1, the second interface 2 and the third interface 3, and equipped with a switchable first channel group 4 and a second channel group 5, a single third interface 3 can flexibly establish a separate channel with the first electronic device or the second electronic device for communication. The first electronic device and the second electronic device are different, which solves the problem that multiple devices need to use the same external interface simultaneously or alternately. For different types of electronic devices or in different application scenarios, the channel switching device can switch the channel group in a two-choice manner to adapt to different communication protocols or standards, which enhances the compatibility and flexibility of the channel switching device. When it is necessary to urgently switch the data transmission object, there is no need to replace the interface, only the channel state needs to be switched, which greatly improves the response speed and real-time processing capability of the system.
[0029] The display device can be a variety of existing video output devices, such as liquid crystal displays, LED displays, projectors, televisions, etc. The first electronic device and the second electronic device can cover a wide range of electronic device types, such as desktops, laptops, tablet computers, smart phones, game consoles, etc. The first electronic device and the second electronic device involved in the embodiment of the present application are OPS and Tiny PC, respectively. Through the channel switching device provided in the embodiment of the present application, a commercial large display screen can support OPS and Tiny PC at the same time without the need for additional conversion.
[0030] In some embodiments, Figure 2 As shown, the channel switching device also includes: a third channel group 6, which is connected to the first interface 1, the second interface 2 and the third interface 3 respectively; the third channel group 6 can switch to the first state or the second state according to the access request signal from the first electronic device or the second electronic device.
[0031] The function of the third channel group 6 is to control the operation of the two-to-one switching state. When the first electronic device or the second electronic device sends an access request signal, the third channel group 6 can dynamically switch the current working state according to the received request signal through internal logic judgment and control mechanism.
[0032] For example, if the first electronic device issues a request, the channel switching device enters the first state through the regulation of the third channel group 6, at which time the first channel group 4 between the first interface 1 and the third interface 3 is activated, allowing the data stream of the first electronic device to pass and be transmitted to the display device. On the contrary, if the second electronic device initiates an access request, the channel switching device automatically switches to the second state, at which time the second channel group 5 is enabled to ensure smooth communication between the second interface 2 and the third interface 3, so that the content of the second electronic device can be presented on the display device in a timely and accurate manner.
[0033] This control method enhances the automation and responsiveness of the channel switching device. It no longer relies on manual operation to switch the connection status of different devices. It realizes intelligent and real-time data transmission switching between electronic devices and display devices, greatly improving work efficiency and user experience.
[0034] In some embodiments, the third channel group 6 includes a switch module 601, which is arranged close to the third interface 3; the switch module 601 is used to conduct the electrical connection between the first interface 1 and the third interface 3 in the first state, and to conduct the electrical connection between the second interface 2 and the third interface 3 in the second state.
[0035] The switch module 601 may include one or more groups of physical switch elements, or logic switch units in an integrated circuit. These switch elements or units can change their conduction states according to received command signals.
[0036] Specifically, when in the first state, the switch module 601 ensures that the circuit between the first interface 1 and the third interface 3 is connected, thereby establishing an effective electrical connection, so that the data of the first electronic device can be transmitted to the display device through the first channel group 4 without obstacles. When switched to the second state, the switch module 601 closes the connection between the first interface 1 and the third interface 3, and simultaneously conducts the circuit between the second interface 2 and the third interface 3, so that the second electronic device can transmit data to the display device via the second channel group 5.
[0037] In some embodiments, the switch module 601 includes a pair of semiconductor field effect transistors.
[0038] The switch module 601 uses two semiconductor field effect transistors, each of which (such as MOSFET or JFET, etc.) can be regarded as an electronic switch, and they respectively control whether the signal path from the first interface 1 to the third interface 3, and from the second interface 2 to the third interface 3 is turned on. Generally, the gate of the transistor receives an electrical signal from the controller, and when a specific control signal is received, the on-resistance between the source and the drain becomes smaller, forming an effective current path; otherwise, the current is blocked.
[0039] In some embodiments, the third channel group 6 further includes a control signal line 602 ; the control signal line 602 is connected to the third interface 3 and the switch module 601 respectively, and the display device can control the level of the switch module 601 through the control signal line 602 .
[0040] One end of the control signal line 602 is connected to the third interface 3, and the other end is connected to the switch module 601. In this way, the display device can directly control the working state of the switch module 601 through this control signal line 602. The control signal line 602 is equivalent to a two-way communication channel, which can be a GPIO circuit, which allows the display device to send a control signal to the switch module 601 to decide whether to open the connection with the first interface 1 or the second interface 2. By introducing the control signal line 602, the active control capability of the display device over channel switching is realized. When the display device needs to switch from the first electronic device to the second electronic device, it only needs to send a corresponding level signal through the control signal line 602 to drive the switch module 601 to switch the conduction state, and the channel conversion can be completed without external human intervention or additional control equipment. Thereby greatly improving the flexibility and real-time performance of data transmission channel management.
[0041] In some embodiments, a pair of semiconductor field effect transistors are respectively connected to the first interface 1 and the second interface 2 through the first power transmission signal line 603 and the second power transmission signal line 604 , and are connected to the third interface 3 through the third power transmission signal line 605 .
[0042] The gate of each semiconductor field effect transistor receives the control signal of the display device through the control signal line 602, wherein the source of the first semiconductor field effect transistor is connected to the power supply part of the first interface 1 through the first power transmission signal line 603, the source of the second semiconductor field effect transistor is connected to the power supply part of the second interface 2 through the second power transmission signal line 604, and their drains are connected to the power supply part of the third interface 3 through another third power transmission signal line 605. With this design, when the signal on the control signal line 602 changes, the on or off state of the transistor also changes accordingly, thereby realizing the switching of the electrical connection between the first interface 1 and the third interface 3 or between the second interface 2 and the third interface 3.
[0043] In some embodiments, the channel switching device provided in the embodiments of the present application eliminates the independent external power connection interface. In the conventional technology, for example Figure 1 As shown, the adapter board may require an additional power interface 200 to obtain power from an external power supply, but in the embodiment of the present application, the built-in power module of the mainboard in the display device connected thereto is directly utilized to meet the power supply requirements of the device.
[0044] Specifically, the channel switching device expands or transforms the third interface 3 connected to the display device, and adds pins or contacts connected to the display device mainboard power module, so that the channel switching device can directly obtain the necessary working voltage and current from the display device mainboard power supply without the need for power supply through an external power cable. This reduces additional power cables, simplifies the overall connection layout, saves space resources, realizes an integrated design, and improves user experience.
[0045] In some embodiments, the first channel group 4 includes a first identification transmission signal line 401, which is respectively connected to the first interface 1 and the third interface 3, and is used to receive an access request signal from the first electronic device; the second channel group 5 includes a second identification transmission signal line 501, which is respectively connected to the second interface 2 and the third interface 3, and is used to receive an access request signal from the second electronic device; the switch module 601 switches the first state or the second state through the access request signals of the first identification transmission signal line 401 and the second identification transmission signal line 501.
[0046] One end of the first identification transmission signal line 401 is connected to the first interface 1, and the other end is connected to the third interface 3. Its function is to receive and transmit the access request signal from the first electronic device. Similarly, the two ends of the second identification transmission signal line 501 are respectively connected to the second interface 2 and the third interface 3 to receive and process the access request signal of the second electronic device. These two identification transmission signal lines play a key role in information interaction. They are like "bridges" to accurately transmit the access request signal of the electronic device to the switch module 601.
[0047] When the first electronic device is connected, it is transmitted to the mainboard end of the display device through the first identification transmission signal line 401, and the mainboard end transmits the access signal to the switch module 601 through the control signal line 602. The switch module 601 can immediately sense it and switch to the first state accordingly, opening the data transmission channel between the first interface 1 and the third interface 3; similarly, when the second electronic device is connected, it is transmitted to the mainboard end of the display device through the second identification transmission signal line 501, and the mainboard end transmits the access signal to the switch module 601 through the control signal line 602, and the switch module 601 switches to the second state, ensuring that the data transmission between the second interface 2 and the third interface 3 can proceed smoothly. This design makes channel switching more intuitive and automatic, not only simplifies the user operation steps, but also optimizes the system response speed, and significantly improves the flexibility and efficiency of data exchange between devices.
[0048] In some embodiments, the first channel group 4 includes a first data transmission signal line 402, and the second channel group 5 includes a second data transmission signal line 502; the first data transmission signal line 402 and the second data transmission signal line 502 can converge at one point and be connected to the third interface 3; wherein the first data transmission signal line 402 and the second data transmission signal line 502 transmit the same type of data.
[0049] The first data transmission signal line 402 is used to transmit the data of the first electronic device to the third interface 3 in the first state, and the second data transmission signal line 502 is responsible for transmitting the data of the second electronic device to the same third interface 3 in the second state. The two may realize the convergence of signal lines through some form of collection point, so that the data of the first interface 1 and the second interface 2 can be transmitted to the same third interface 3 through their respective channel groups at different time periods, and then connected to the display device. The two signal lines transmit the same type of data, for example, both are video signals, audio signals or composite audio and video signals.
[0050] Transmitting data from different devices through the same type of signal line reduces the number and types of signal lines, making the system design simpler and saving costs. When it is necessary to switch between the first electronic device and the second electronic device, it is only necessary to switch the corresponding data transmission signal line through internal circuit control, without changing the signal format or reconfiguring the signal line, which improves the switching speed and efficiency.
[0051] In some embodiments, the channel switching device further includes: a signal amplifying unit 7 , which is connected to the first data transmission signal line 402 and the second data transmission signal line 502 respectively, and is disposed close to the third interface 3 .
[0052] The first data transmission signal line 402 and the second data transmission signal line 502 transmit the same type of data, such as HDMI. HDMI is a standard interface for high-definition video and audio data transmission. With the increase in bandwidth requirements and the growth of transmission distances, signals may experience amplitude attenuation, rise / fall time degradation, timing offset and other problems after long-distance transmission, which will affect the quality of the signal at the final receiving end and cause image distortion or inability to correctly identify the image.
[0053] Therefore, the channel switching device of the embodiment of the present application is designed with a signal amplifying unit 7 for this purpose. The signal amplifying unit 7 may be a circuit board or chip with an integrated signal amplifying part. It may include multiple signal amplifiers. The signal amplifier is arranged on a main line formed by the first data transmission signal line 402 and the second data transmission signal line 502 to ensure that the data signal from the first electronic device or the second electronic device is enhanced and amplified during the transmission to the third interface 3.
[0054] In some embodiments, Figure 2 As shown, the first channel group 4 also includes a third data transmission signal line 403, and the second channel group 5 includes a fourth data transmission signal line 503; the third data transmission signal line 403 and the fourth data transmission signal line 503 can meet at one point and be connected to the third interface 3. The third data transmission signal line 403 and the fourth data transmission signal line 503 can be designed as the same USB transmission circuit, so as to support the data transmission requirements of the USB device. The function of the channel switching device is further expanded, and the user's needs for data transmission types when switching between multiple devices are better met.
[0055] In the implementation process, the display device is connected to the third interface 3 of the channel switching device through the HDMI interface. After being processed by the internal signal amplification unit 7, the signal can be enhanced and converted into a signal format suitable for the OPS module or Tiny PC. If it is an OPS module, the HDMI signal may be converted into a display signal under the OPS standard by switching or adapting; and for Tiny PC, if it supports DisplayPort (DP) display circuit, the HDMI signal can be converted and multiplexed into a differential pair signal for Tiny PC to use as a DP interface, thereby realizing the transmission of high-definition video signals. The USB circuit can be directly divided into two after processing and given to OPS and Tiny PC respectively.
[0056] The channel switching device can be designed and configured in a targeted manner according to factors such as signal transmission quality and speed, device compatibility, system scalability, etc. required for actual applications, and the number and function of transmission signal lines in the first channel group 4 and the second channel group 5 are not limited here.
[0057] In some embodiments, Figure 3 and Figure 4 As shown, the channel switching device also includes: a shell 8 and a carrier; wherein the carrier is arranged in the shell 8, and the first channel group 4, the second channel group 5 and the third channel group 6 are arranged on the carrier; the first interface 1, the second interface 2 and the third interface 3 are arranged on the shell 8.
[0058] The carrier is located inside the housing 8 and carries all signal transmission channels, namely the first channel group 4, the second channel group 5 and the third channel group 6. The function of the carrier is similar to that of a mainboard or substrate, on which various signal lines and possible control elements are arranged, so that each channel group can be arranged and connected in a reasonable and orderly manner. The first interface 1, the second interface 2 and the third interface 3 are all fixedly arranged at appropriate positions of the housing 8 to facilitate the access of external devices. These three types of interfaces are all exposed on the surface of the housing 8, and the user can directly physically connect the first electronic device, the second electronic device and the display device to the channel switching device through these interfaces.
[0059] All important components are integrated into a compact housing 8, which is not only easy to install and carry, but also helps to protect the internal precision circuits from the external environment and extend the service life.
[0060] In some embodiments, the housing 8 includes a first end and a second end opposite to each other, the third interface 3 is disposed at the first end, and the first interface 1 and the second interface 2 are disposed at intervals at the second end.
[0061] The shell 8 has two opposite end faces, namely the first end and the second end. The third interface 3 is arranged at the first end of the shell 8, which helps to optimize the docking with the display device, and the first interface 1 and the second interface 2 are arranged at the second end of the shell 8 at intervals. The first electronic device and the second electronic device can be conveniently connected separately, and the spatial isolation between them is also conducive to preventing the cable from being entangled, thereby improving the stability of the connection and the convenience of using the device. Since the interfaces are distributed on different end faces of the shell 8, in actual applications, users can easily distinguish and connect different electronic devices, reducing the possibility of misoperation.
[0062] The use principle of the channel switching device provided in the embodiment of the present application is as follows:
[0063] For example, the first electronic device is an OPS and the second electronic device is a Tiny PC.
[0064] When OPS is connected to the first interface 1, the first identification transmission signal line 401 will feed back a high level to the mainboard end of the display device. The mainboard recognizes that OPS is in place, and then gives a high level to the first semiconductor field effect transistor connected to the first interface 1 through the control signal line 602. At this time, the first semiconductor field effect transistor is turned on and the second semiconductor field effect transistor is turned off. The mainboard end of the display device provides the operating voltage and current of OPS through the first power transmission signal line 603, and OPS transmits data to the display device through the first data transmission signal line 402 and the third interface 3; when Tiny PC is connected to the second interface 2, the second identification transmission signal line 501 will have a pull-down action on the mainboard end. At this time, it is recognized that Tiny PC is in place, and the mainboard end gives a low level to the second semiconductor field effect transistor connected to the second interface 2 through the control signal line 602. At this time, the second semiconductor field effect transistor is turned on and the first semiconductor field effect transistor is turned off. The mainboard end of the display device provides the operating voltage and current of Tiny PC through the second power transmission signal line 604, and Tiny PC transmits data to the display device through the second data transmission signal line 502 and the third interface 3.
[0065] The channel switching device provided in the embodiment of the present application can adapt to different communication protocols or standards by switching channel groups in a two-choice manner, thereby enhancing the compatibility and flexibility of the channel switching device. When it is necessary to urgently switch the data transmission object, there is no need to replace the interface, only to switch the channel status, which greatly improves the response speed and real-time processing capability of the system.
[0066] Example 2
[0067] The embodiment of the present application provides a transmission system, including the channel switching device provided in embodiment 1 of the present application. The transmission system also includes a display device; a first electronic device; and a second electronic device; the third interface 3 of the channel switching device is connected to the display device, the first interface 1 is connected to the first electronic device, and the second interface 2 is connected to the second electronic device.
[0068] The transmission system allows the first electronic device and the second electronic device to be connected through the first interface 1 and the second interface 2 of the channel switching device, respectively, and share the same display device. This means that users can freely switch or simultaneously display video outputs from two different electronic devices on a single display, greatly improving the utilization efficiency of hardware resources. Such a transmission system has good compatibility and is suitable for electronic devices of various types and specifications, which is conducive to future equipment upgrades and expansions, without the need to purchase additional complex converters or adapters, reducing the user's usage costs and technical barriers.
[0069] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A channel switching device, characterized in that: include: A first interface, used to connect to a first electronic device; A second interface, used to connect to a second electronic device; A third interface, connected to the first interface through a first channel group, and connected to the second interface through a second channel group, the third interface being used to connect to a display device; Wherein, in the first state, the first interface and the third interface can transmit data through the first channel group; In the second state, the second interface and the third interface can transmit data through the second channel group; The first state and the second state are switchable.
2. The channel switching device according to claim 1, characterized in that: Also includes: a third channel group, the third channel group being connected to the first interface, the second interface and the third interface respectively; The third channel group can switch the first state or the second state according to an access request signal from the first electronic device or the second electronic device.
3. The channel switching device according to claim 2, characterized in that: The third channel group includes a switch module, and the switch module is arranged close to the third interface; The switch module is used to conduct the electrical connection between the first interface and the third interface in the first state, and to conduct the electrical connection between the second interface and the third interface in the second state.
4. The channel switching device according to claim 3, characterized in that: The third channel group also includes a control signal line; The control signal line is connected to the third interface and the switch module respectively, and the display device can control the level of the switch module through the control signal line.
5. The channel switching device according to claim 3, characterized in that: The first channel group includes a first identification transmission signal line, the first identification transmission signal line is connected to the first interface and the third interface respectively, and is used to receive an access request signal of the first electronic device; The second channel group includes a second identification transmission signal line, the second identification transmission signal line is connected to the second interface and the third interface respectively, and is used to receive an access request signal of the second electronic device; The switch module switches the first state or the second state through access request signals of the first identification transmission signal line and the second identification transmission signal line.
6. The channel switching device according to claim 1, characterized in that: The first channel group includes a first data transmission signal line, and the second channel group includes a second data transmission signal line; The first data transmission signal line and the second data transmission signal line can meet at one point and be connected to the third interface; Wherein, the first data transmission signal line and the second data transmission signal line transmit the same data.
7. The channel switching device according to claim 6, characterized in that: Also includes: A signal amplifying unit, wherein the signal amplifying unit is connected to the first data transmission signal line and the second data transmission signal line respectively, and the signal amplifying unit is arranged close to the third interface.
8. The channel switching device according to claim 2, characterized in that: Also includes: Shell and carrier; Wherein, the carrier is disposed in the shell, and the first channel group, the second channel group and the third channel group are arranged on the carrier; The first interface, the second interface and the third interface are arranged on the housing.
9. The channel switching device according to claim 8, characterized in that: The housing includes a first end and a second end that are opposite to each other. The third interface is disposed at the first end. The first interface and the second interface are disposed at intervals at the second end.
10. A transmission system, characterized in that: include: A channel switching device, a display device, a first electronic device, and a second electronic device; The channel switching device comprises: A first interface, used to connect to a first electronic device; A second interface, used to connect to a second electronic device; A third interface, connected to the first interface through a first channel group, and connected to the second interface through a second channel group, the third interface being used to connect to a display device; Wherein, in the first state, the first interface and the third interface can transmit data through the first channel group; in the second state, the second interface and the third interface can transmit data through the second channel; the first state and the second state can be switched; The third interface of the channel switching device is connected to the display device, the first interface is connected to the first electronic device, and the second interface is connected to the second electronic device.