Vehicle-mounted video source compatible system and method

Abstract

The application belongs to the technical field of vehicle-mounted communication, and discloses a vehicle-mounted video source compatible system and method; the system comprises a system bottom plate, a serial device sub-board, a connector and a vehicle-mounted screen assembly; the serial device sub-board detects a target serial device connected with the vehicle-mounted screen assembly, obtains a protocol signal corresponding to the target serial device according to a preset protocol signal and sends the protocol signal to the system bottom plate; the system bottom plate identifies the target serial device according to the protocol signal and sends a video signal to be sent to the target serial device; the serial device sub-board sends the video signal to be sent to the vehicle-mounted screen assembly through the target serial device; the serial device sub-board meets the connection requirements of vehicle-mounted connectors and vehicle-mounted screens of various models, the system bottom plate detects the serial device that needs to send the video signal according to the serial device sub-board, selects the corresponding serial device when facing different vehicle-mounted display screen models, and then realizes the conversion and transmission of the video signal, without frequently replacing the tool and wasting the funds and time.

Description

Technical Field

[0001] This invention relates to the field of vehicle communication technology, and in particular to a vehicle-mounted video source compatible system and method. Background Technology

[0002] Different car models have different human-machine interface screens for the central control screen. Before the video signal is sent to the car's central control screen for display, the car's head unit needs to be calibrated. This is very unfriendly to screen development companies because they cannot wait for the OEM to debug the head unit's entertainment module before trying to light up the screen. Therefore, a screen lighting fixture is needed during screen development.

[0003] Different car models have different requirements for screen size, resolution, screen type, etc. This requires us to design a jig for each type of screen to emit video signals. When there are only a few screen projects, it is simple to develop jigs for each one. However, as the number of projects increases, making jigs again each time will increase the cost of money and time.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a vehicle-mounted video source compatible system, which aims to solve the technical problem that existing technologies require different video signal transmission fixtures to light up different vehicle-mounted displays. When developing multiple screen projects at the same time, repeatedly making different fixtures results in a significant waste of capital and time costs.

[0006] To achieve the above objectives, the present invention provides a vehicle-mounted video source compatible system, the system comprising: a system baseboard, a serializer sub-board, a connector, and a vehicle-mounted screen assembly; the serializer sub-board includes multiple serializers, the system baseboard is vertically coupled to the serializer sub-board, and the vehicle-mounted screen assembly is connected to any one of the serializers in the serializer sub-board via a connector;

[0007] The serializer sub-board is used to detect the target serializer connected to the vehicle screen assembly in the serializer sub-board and send the protocol signal of the target serializer to the system baseboard.

[0008] The system baseboard is used to receive the protocol signal sent by the serializer sub-board, identify the target serializer according to the protocol signal, and send the video signal to be sent to the target serializer in the serializer sub-board.

[0009] The serializer board is used to send the video signal to be sent to the vehicle screen assembly when the target serializer receives the video signal to be sent.

[0010] Optionally, the serializer sub-board is used to detect the target serializer connected to the vehicle screen assembly in the serializer sub-board, and to send the protocol signal of the target serializer to the system baseboard, including:

[0011] The serializer sub-board is used to detect the voltage level of each serializer in the serializer sub-board when the vehicle screen assembly is connected to the serializer in the serializer sub-board via a connector.

[0012] The serializer board is also used to determine whether the level state of the serializer has changed. If the level state of the serializer has changed, the serializer with the changed level state is taken as the target serializer.

[0013] The serializer sub-board is also used to acquire the protocol signal of the target serializer and send the protocol signal of the target serializer to the system baseboard.

[0014] Optionally, the serializer board includes a first preset serializer;

[0015] Before determining whether the level state of the serializer has changed, the serializer sub-board also includes:

[0016] The serializer sub-board is also used to acquire the pin status of the first preset serializer, obtain the current signal output control mode of the first preset serializer based on the pin status, and obtain the current level status of the first preset serializer based on the output control mode, so that the serializer sub-board can determine whether the level status of the first preset serializer has changed based on the current level status.

[0017] Optionally, the vehicle screen assembly includes a vehicle deserializer;

[0018] The serializer board, after determining whether the level state of the serializer has changed, also includes:

[0019] The system baseboard is used to send an address acquisition signal to the serializer baseboard when the level state of the serializer does not change;

[0020] The serializer baseboard is used to read the network address of the vehicle-mounted deserializer through the target serializer when the address acquisition signal is received, and feed the network address back to the system baseboard.

[0021] The system baseboard is also used to identify the target serializer in the serializer sub-board based on the network address.

[0022] Optionally, the in-vehicle screen assembly further includes an in-vehicle display screen;

[0023] The system baseboard is used to receive protocol signals sent by the serializer sub-board, identify the target serializer according to the protocol signals, and send the video signal to be sent to the target serializer in the serializer sub-board. It also includes:

[0024] The system baseboard is also used to identify multiple target serializers based on multiple protocol signals when receiving multiple protocol signals sent by the serializer subboard, wherein the multiple target serializers correspond one-to-one with multiple vehicle-mounted displays.

[0025] The system base plate is also used to obtain the resolution and screen size of the plurality of vehicle-mounted displays when the first preset number of serializers is less than or equal to a preset number;

[0026] The system baseboard is also used to calculate the reference bandwidth frequency of multiple target serializers based on the computing power of the system baseboard and the resolution and screen size of the multiple vehicle-mounted displays.

[0027] The system baseboard is also used to send the video signal to be sent to multiple target serializers in the target serializer sub-board according to the reference bandwidth frequency.

[0028] Optionally, the serializer board is configured to transmit the video signal to be transmitted to the vehicle screen assembly when the target serializer receives the video signal to be transmitted, including:

[0029] The serializer board is used to convert the video signal to be transmitted into a low-voltage differential signal through the target serializer when the target serializer receives the video signal to be transmitted, and to send the low-voltage differential signal to the vehicle screen assembly through the connector.

[0030] Furthermore, to achieve the above objectives, the present invention also proposes a vehicle-mounted video source compatibility method, the vehicle-mounted video source compatibility method comprising:

[0031] The serializer sub-board detects the target serializer connected to the vehicle screen assembly in the serializer sub-board, obtains the protocol signal of the target serializer, and sends the protocol signal of the target serializer to the system baseboard;

[0032] The system baseboard receives the protocol signal sent by the serializer sub-board, identifies the target serializer according to the protocol signal, and sends the video signal to be sent to the target serializer in the serializer sub-board.

[0033] When the target serializer receives the video signal to be transmitted, the serializer board sends the video signal to be transmitted to the vehicle screen assembly.

[0034] Optionally, the serializer sub-board detects the target serializer connected to the vehicle screen assembly in the serializer sub-board, obtains the protocol signal of the target serializer, and sends the protocol signal of the target serializer to the system baseboard, including:

[0035] When the vehicle screen assembly is connected to the serializer in the serializer sub-board via a connector, the serializer sub-board detects the voltage status of each serializer in the serializer sub-board.

[0036] The serializer board determines whether the level state of the serializer has changed. If the level state of the serializer has changed, the serializer with the changed level state is taken as the target serializer.

[0037] The serializer sub-board acquires the protocol signal of the target serializer and sends the protocol signal of the target serializer to the system baseboard.

[0038] Optionally, after the serializer board determines whether the level state of the serializer has changed, it further includes:

[0039] When the level state of the serializer does not change, the system baseboard sends an address acquisition signal to the serializer baseboard.

[0040] When the serializer baseboard receives the address acquisition signal, it reads the network address of the vehicle-mounted deserializer through the target serializer and feeds back the network address to the system baseboard.

[0041] The system baseboard identifies the target serializer in the serializer sub-board based on the network address.

[0042] Optionally, the system baseboard receives the protocol signal sent by the serializer sub-board, identifies the target serializer according to the protocol signal, and sends the video signal to be sent to the target serializer in the serializer sub-board, including:

[0043] When the system baseboard receives multiple protocol signals sent by the serializer subboard, it identifies multiple target serializers based on the multiple protocol signals. Each of the multiple target serializers corresponds to one of the multiple vehicle-mounted displays.

[0044] When the number of the first preset serializers is less than or equal to the preset number, the system baseboard acquires the resolution and screen size of the multiple vehicle-mounted displays.

[0045] The system baseboard calculates the reference bandwidth frequency of multiple target serializers based on the computing power of the system baseboard and the resolution and screen size of the multiple vehicle-mounted displays.

[0046] The system baseboard transmits the video signal to be transmitted to multiple target serializers in the target serializer sub-board according to the reference bandwidth frequency.

[0047] This invention uses a serializer sub-board to meet the connection requirements of various types of vehicle connectors and vehicle screens. The system baseboard automatically detects which serializer needs to be sent the video signal based on the serializer sub-board, so as to automatically select the corresponding serializer when facing different vehicle display models, thereby realizing the conversion and transmission of video signals without frequently changing fixtures and wasting money and time. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of the first embodiment of the vehicle-mounted video source compatible system of the present invention;

[0049] Figure 2 This is a schematic diagram of the structure of the second embodiment of the vehicle-mounted video source compatible system of the present invention;

[0050] Figure 3 This is a schematic diagram of the structure of the third embodiment of the vehicle-mounted video source compatible system of the present invention;

[0051] Figure 4 This is a schematic diagram of structural extension in one embodiment of the vehicle-mounted video source compatibility system of the present invention;

[0052] Figure 5 This is a flowchart illustrating the first embodiment of the vehicle-mounted video source compatibility method of the present invention.

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0055] This invention provides a vehicle-mounted video source compatible system, referring to... Figure 1 , Figure 1 This is a schematic diagram of the structure of a first embodiment of an in-vehicle video source compatible system according to the present invention.

[0056] In this embodiment, the vehicle video source compatibility system includes: a system baseboard, a serializer sub-board, a connector, and a vehicle screen assembly; the serializer sub-board includes multiple serializers, the system baseboard and the serializer sub-board are coupled vertically, and the vehicle screen assembly is connected to any one of the serializers in the serializer sub-board through a connector;

[0057] Understandably, the system baseboard can be on a separate baseboard that integrates the circuitry of the relevant chips for video signal generation and transmission, and pulls out the connection for transmitting video signals separately, connecting it to the serializer sub-board via upper and lower card slot connectors.

[0058] It should be understood that the system baseboard and the serializer subboard can be connected by vertical coupling via pin headers.

[0059] Understandably, a serializer board can include multiple models of serializers. Simply put, it can be obtained by connecting multiple different models of serializers to the same baseboard via connecting cables.

[0060] It should be understood that the serializer board can integrate two types of serializers: Maxim serializers and Texas Instruments serializers. The Maxim serializer can multiplex the output signal and can connect to both high-speed data connectors and coaxial signal transmission connectors. The high-speed data connector can be an HSD connector, and the coaxial signal transmission connector can be a Faker connector.

[0061] It should be noted that different projects require different serializers. The appropriate serializer can be selected on the second sub-board as needed, without replacing the system baseboard. This significantly reduces component waste in the system and other functional modules during the manufacturing process. When different screens need to be lit, only the matching second sub-board needs to be replaced to quickly light up other screens, making efficient use of the fixture board, which can be either the system baseboard or the serializer sub-board.

[0062] The serializer sub-board is used to detect the target serializer connected to the vehicle screen assembly in the serializer sub-board, and send the protocol signal of the target serializer to the system baseboard.

[0063] Understandably, there are many types of serializers in the serializer board, and the number of serializers is very large. If the system backplane needs to send a video signal, it needs to know which serializer in the serializer board to send the video signal to.

[0064] It should be understood that the serializer connected to the screen assembly detected by the serializer sub-board is the target serializer for this video signal transmission in the serializer sub-board.

[0065] It should be noted that detecting the target serializer connected to the vehicle screen assembly in the serializer sub-board can be done by detecting whether the serializer in the serializer sub-board generates a corresponding protocol signal. This protocol signal can be preset. If the connection to the screen assembly is successful, the signal will be sent. For example, it can be preset that if serializer A is connected to the vehicle screen assembly, it will generate signal a. Then signal a is the protocol signal corresponding to serializer A.

[0066] If the serializer generates a protocol signal, it is considered that the serializer has been successfully connected to the vehicle screen assembly, and the serializer that generates the protocol signal is regarded as the target serializer.

[0067] It is important to emphasize that each serializer in the serializer sub-board communicates with the system backplane via the IIC communication channel, sending the corresponding protocol signal to the system backplane to tell it which serializer needs to transmit a video signal (this video signal can be DSI, which generally refers to digital voice interpolation. Digital voice interpolation is a technology that inserts digital voice information during the inter-talk time in multi-talk communication).

[0068] The system baseboard is used to receive the protocol signal sent by the serializer sub-board, identify the target serializer according to the protocol signal, and send the video signal to be sent to the target serializer in the serializer sub-board.

[0069] Understandably, the system backplane may know in advance which serializer sends each protocol signal.

[0070] In practice, the system baseboard knows that serializer A sends a protocol signal after connecting to the screen assembly, serializer B sends a protocol signal after connecting to the screen assembly, and serializer C sends a protocol signal after connecting to the screen assembly. When the system baseboard receives the protocol signal b, it knows that serializer B is the target serializer and will send the video signal to be sent to serializer B.

[0071] It should be understood that the video signal to be sent can be the video signal that lights up the vehicle screen assembly, generated by a chip in the system baseboard.

[0072] The serializer board is used to send the video signal to be sent to the vehicle screen assembly when the target serializer receives the video signal to be sent.

[0073] It should be noted that when the target serializer on the serializer board receives the video signal to be transmitted, it converts the video signal to be transmitted into a low-voltage differential signal (which can be an LVDS signal), and sends the low-voltage differential signal to the vehicle screen assembly through a connector. After receiving the low-voltage differential signal, the screen assembly can recognize and light up the screen.

[0074] In practical implementation, the common lighting link for most screens is SOC-serializer-deserializer-screen panel. The system baseboard itself calculates and generates video images, converts the video images into DSI signals for the serializer to receive, and the serializer converts the DSI signals into LVDS signals for long-distance transmission. The screen assembly end is deserializer-screen panel.

[0075] Regardless of the type of screen on the market, the amount of data transmitted, or the data frequency, is the key factor. For example, consider a 15.5-inch 2K screen and a 6.63-inch high-definition screen. The former not only has a larger screen size but also a higher resolution, which places higher demands on the bandwidth and frequency of the serializer.

[0076] For the system backplane, it is the video signal output source, and the output signal has a fixed protocol. The physical layer lines are also a fixed number of signal lines. Therefore, no matter how the screen changes, the physical layer line connection to the serializer remains unchanged. Thus, the traditional one-to-one connection between the system and the serializer can be transformed into a connection between one system and multiple serializers.

[0077] Deserializers and serializers exist in pairs, with specific model numbers for each. For Maxim, the connectors used for the wiring harness connection between deserializers and serializers can be either HSD connectors or Faker connectors. Normally, the former supports 1.5GHz per channel, while the latter supports 3GHz per channel. TI typically uses HSD connectors for the wiring harness connection between deserializers and serializers.

[0078] This embodiment uses a serializer sub-board to meet the connection requirements of various types of vehicle connectors and vehicle screens. The system baseboard automatically detects which serializer needs to be sent the video signal based on the serializer sub-board, so as to automatically select the corresponding serializer when facing different vehicle display models, thereby realizing the conversion and transmission of video signals without frequently changing fixtures and wasting money and time.

[0079] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a second embodiment of an in-vehicle video source compatible system according to the present invention.

[0080] Based on the first embodiment described above, in the vehicle-mounted video source compatible system of this embodiment, the serializer sub-board is used to detect the target serializer connected to the vehicle-mounted screen assembly in the serializer sub-board, and send the protocol signal of the target serializer to the system baseboard, including:

[0081] The serializer sub-board is used to detect the voltage level of each serializer in the serializer sub-board when the vehicle screen assembly is connected to the serializer in the serializer sub-board via a connector.

[0082] It should be noted that the signal lines output by the serializer are pulled up by a 10k resistor on the serializer divider board, while the signal lines at the deserializer input end of the screen assembly are pulled down by a 10k resistor.

[0083] It should be emphasized that when the serializer board and the screen assembly are connected by a wiring harness, the signal level of the serializer will change from high level to low level.

[0084] The serializer board is also used to determine whether the level state of the serializer has changed. If the level state of the serializer has changed, the serializer with the changed level state is taken as the target serializer.

[0085] Understandably, the serializer board will continuously detect this change during the power-on initialization process. By detecting whether the serializer's level changes from high to low, it can further determine whether a connection cable is connected to the vehicle screen assembly.

[0086] It should be noted that the serializer sub-board includes a first preset serializer; the first preset serializer may be a Maxim serializer. Before determining whether the voltage level of the serializer has changed, the serializer sub-board is also used to acquire the pin status of the first preset serializer (the pin status may be a pull-up or pull-down pin), obtain the current signal output control mode of the first preset serializer based on the pin status (the pull-up pin can be preset to an HSD connector, and the pull-down pin to a Faker connector), and obtain the current voltage level of the first preset serializer based on the output control mode (it can be further understood that when the pin is pulled up, it is currently at a high level, and if the screen assembly is successfully connected, it will change from a high level to a low level; when the pin is pulled down, it is currently at a low level, and if the screen assembly is successfully connected, it will change from a low level to a high level), so that the serializer sub-board can determine whether the voltage level of the first preset serializer has changed based on the current voltage level.

[0087] It should be further explained that for Maxim's HSD connector and Faker connector at the output end, if the HSD connector is inserted, the signal output mode control pin of the serializer needs to be pulled up, and if the Faker connector is inserted, the signal output mode control pin of the serializer needs to be pulled down. Pull-up and pull-down resistors are pre-installed on the second sub-board and separated by jumper caps. When connecting different connectors, the pull-up and pull-down of the pins are changed by using jumper caps.

[0088] It should be emphasized that the vehicle screen assembly includes a vehicle deserializer. After determining whether the voltage level of the serializer has changed, the system baseboard is used to send an address acquisition signal to the serializer baseboard when the voltage level of the serializer has not changed.

[0089] It should be noted that while performing level detection, the vehicle screen assembly may not have a pull-up or pull-down setting, meaning that even if the serializer and screen assembly are connected by a cable, the target serializer may still not be accurately detected. In this case, after the system baseboard, serializer sub-board, and screen assembly are powered on, the system baseboard will use IIC to tell all serializers to read the network address of the deserializer.

[0090] It should be further explained that the serializer baseboard is used to read the network address of the vehicle-mounted deserializer through the target serializer when the address acquisition signal is received, and to feed back the network address to the system baseboard. It is worth noting that the network address of the vehicle-mounted deserializer can be the IIC address of the vehicle-mounted deserializer. The network address of the vehicle-mounted deserializer in the following embodiments can also be the IIC address of the vehicle-mounted deserializer.

[0091] Although all serializers receive the signal to read the deserializer address, only the target serializer is connected to the screen deserializer. In this case, the target serializer can read the network address of the screen deserializer and send the screen deserializer's address to the system backplane.

[0092] It should be emphasized that the system baseboard is also used to receive the network address of the deserializer sent by the target serializer. Each serializer sends information carrying a corresponding protocol signal, so the system baseboard can identify the target serializer according to the protocol corresponding to the sent network address.

[0093] In practice, the system baseboard uses IIC (Inter-Integrated Circuit, or IICBus for short) to tell the serializer to read the deserializer address. The serializer reads the deserializer address through the LVDS channel of the wiring harness, and then tells the system baseboard the deserializer address through the IIC channel. In this way, the system baseboard knows that the corresponding serializer is connected to the deserializer. When a DSI video signal is input to the corresponding serializer, the serializer converts it into an LVDS signal and transmits it to the screen assembly through the wiring harness. Obtaining the deserializer address requires the system baseboard to read the deserializer address after the screen assembly is powered on. Initialization can only be completed after the system baseboard reads the deserializer address, and then the internal registers of the serializer are configured, allowing the serializer to output the corresponding LVDS signal to the deserializer. This may slightly slow down the boot-up display speed.

[0094] The serializer sub-board is also used to acquire the protocol signal of the target serializer and send the protocol signal of the target serializer to the system baseboard.

[0095] Understandably, when any serializer in the serializer baseboard successfully connects to the screen assembly, it will generate a pre-set protocol signal for that serializer. This protocol signal indicates that the screen assembly has been successfully connected. This protocol signal corresponds to that serializer and is sent to the system baseboard. The system baseboard can then determine which serializer has successfully connected to the screen assembly based on this protocol and can then send video signals to that serializer.

[0096] This embodiment determines which serializer is connected to the screen assembly by checking for changes in the voltage levels of each serializer on the serializer sub-board. When there is no voltage change, the serializer obtains the network address of the deserializer to determine which serializer is connected to the screen assembly. After the serializer is connected, it sends a protocol signal corresponding to that serializer to the system baseboard. The system baseboard can identify the target serializer based on this protocol signal and send a video signal to the target serializer. It can adaptively identify the target serializer and automatically select the corresponding serializer for different vehicle display models, thereby realizing the conversion and transmission of video signals without frequently changing fixtures, which wastes money and time.

[0097] refer to Figure 3 , Figure 3 This is a schematic diagram of the third embodiment of an in-vehicle video source compatible system of the present invention.

[0098] Based on the second embodiment described above, the vehicle screen assembly in this embodiment also includes a vehicle display screen;

[0099] The system baseboard is used to receive protocol signals sent by the serializer sub-board, identify the target serializer according to the protocol signals, and send the video signal to be sent to the target serializer in the serializer sub-board. It also includes:

[0100] The system baseboard is also used to identify multiple target serializers based on multiple protocol signals when receiving multiple protocol signals sent by the serializer subboard, wherein the multiple target serializers correspond one-to-one with multiple vehicle-mounted displays.

[0101] Understandably, multiple serializers on a serializer board can be connected to multiple screen assemblies simultaneously via connectors.

[0102] It should be understood that each serializer corresponds to a screen assembly, so the system backplane can recognize multiple target serializers.

[0103] It should be noted that the system baseboard can simultaneously receive protocol signals from multiple serializers, determine which serializers are connected to the screen assembly, and then further determine which serializer to send the video signal to based on the system baseboard.

[0104] The system base plate is also used to obtain the resolution and screen size of the plurality of vehicle-mounted displays when the first preset number of serializers is less than or equal to a preset number;

[0105] Understandably, the preset number can be 1.

[0106] It should be understood that when the first preset number of serializers is less than or equal to the preset number, the serializer connected to the screen assembly on the serializer board can consist of one Maxim serializer and multiple Ti serializers; or it can consist entirely of Ti serializers. The resolution and screen size of the multiple vehicle-mounted displays connected to the serializers are obtained. For details, please refer to [reference needed]. Figure 4 .

[0107] In practical implementation, if multiple signals are inserted, and they are all Maxim serializers but different connectors, the LVDS signal of the corresponding connector is output according to the pull-up and pull-down of the jumper cap, and only one screen can be lit. If one is a TI serializer connector and the other is a Maxim serializer connector, it is necessary to read and process the video resolution and screen size information corresponding to the relevant address in the system baseboard according to the model and computing power of the system baseboard and the deserializer address fed back from the screen end, and adaptively adjust the resolution of the output to the two screen assemblies to optimize the allocation of computing power inside the system baseboard.

[0108] The system baseboard is also used to calculate the reference bandwidth frequency of multiple target serializers based on the computing power of the system baseboard and the resolution and screen size of the multiple vehicle-mounted displays.

[0109] Understandably, the computing power of the system baseboard can be understood as the amount of data that the system baseboard can output.

[0110] It should be understood that the reference bandwidth frequency can be calculated based on the resolution and screen size of each in-vehicle display, representing the bandwidth frequency of the video signal that should be sent to the display assembly to illuminate the in-vehicle display.

[0111] It should be noted that the bandwidth frequency required by each screen assembly connected to the target serializer is not the same. Video signals will only be sent to the target serializer if the bandwidth frequency of the screen assembly is met.

[0112] The system baseboard is also used to send the video signal to be sent to multiple target serializers in the target serializer sub-board according to the reference bandwidth frequency.

[0113] Understandably, after calculation, if the system baseboard meets the bandwidth frequency of the screen assemblies corresponding to multiple target serializers, then video signals can be sent to those multiple target serializers.

[0114] It should be noted that if multiple target serializers exist simultaneously, but cannot be satisfied at the same time, the order in which the protocol signals are received will determine which target serializer to send the video signal to.

[0115] This embodiment, when multiple screen assemblies are connected, reads and adaptively adjusts the corresponding bandwidth frequency output to multiple screen assemblies based on the model and computing power of the system baseboard and the deserializer address fed back from the screen end. This optimizes the allocation of computing power within the system, enabling the simultaneous lighting of multiple screen assemblies based on its own computing power while adaptively selecting the corresponding serializer, thus quickly realizing the research and development testing of multiple screens.

[0116] Reference Figure 5 , Figure 5 This is a flowchart illustrating the first embodiment of the vehicle-mounted video source compatibility method of the present invention.

[0117] like Figure 5 As shown, the vehicle-mounted video source compatibility method proposed in this embodiment of the invention includes:

[0118] The serializer sub-board detects the target serializer connected to the vehicle screen assembly in the serializer sub-board, obtains the protocol signal of the target serializer, and sends the protocol signal of the target serializer to the system baseboard;

[0119] The system baseboard receives the protocol signal sent by the serializer sub-board, identifies the target serializer according to the protocol signal, and sends the video signal to be sent to the target serializer in the serializer sub-board.

[0120] When the target serializer receives the video signal to be transmitted, the serializer board sends the video signal to be transmitted to the vehicle screen assembly.

[0121] This embodiment uses a serializer sub-board to meet the connection requirements of various types of vehicle connectors and vehicle screens. The system baseboard automatically detects which serializer needs to be sent the video signal based on the serializer sub-board, so as to automatically select the corresponding serializer when facing different vehicle display models, thereby realizing the conversion and transmission of video signals without frequently changing fixtures and wasting money and time.

[0122] In one embodiment, in the vehicle-mounted video source compatibility method, the serializer sub-board detects a target serializer connected to the vehicle-mounted screen assembly in the serializer sub-board, obtains the protocol signal of the target serializer, and sends the protocol signal of the target serializer to the system baseboard, including:

[0123] When the vehicle screen assembly is connected to the serializer in the serializer sub-board via a connector, the serializer sub-board detects the voltage status of each serializer in the serializer sub-board.

[0124] The serializer board determines whether the level state of the serializer has changed. If the level state of the serializer has changed, the serializer with the changed level state is taken as the target serializer.

[0125] The serializer sub-board acquires the protocol signal of the target serializer and sends the protocol signal of the target serializer to the system baseboard.

[0126] In one embodiment, in the vehicle-mounted video source compatibility method, after the serializer board determines whether the level state of the serializer has changed, the method further includes:

[0127] When the level state of the serializer does not change, the system baseboard sends an address acquisition signal to the serializer baseboard.

[0128] When the serializer baseboard receives the address acquisition signal, it reads the network address of the vehicle-mounted deserializer through the target serializer and feeds back the network address to the system baseboard.

[0129] The system baseboard identifies the target serializer in the serializer sub-board based on the network address.

[0130] In one embodiment, in the vehicle-mounted video source compatibility method, the system baseboard receives a protocol signal sent by the serializer sub-board, identifies the target serializer according to the protocol signal, and sends the video signal to be sent to the target serializer in the serializer sub-board, including:

[0131] When the system baseboard receives multiple protocol signals sent by the serializer subboard, it identifies multiple target serializers based on the multiple protocol signals. Each of the multiple target serializers corresponds to one of the multiple vehicle-mounted displays.

[0132] When the number of the first preset serializers is less than or equal to the preset number, the system baseboard acquires the resolution and screen size of the multiple vehicle-mounted displays.

[0133] The system baseboard calculates the reference bandwidth frequency of multiple target serializers based on the computing power of the system baseboard and the resolution and screen size of the multiple vehicle-mounted displays.

[0134] The system baseboard transmits the video signal to be transmitted to multiple target serializers in the target serializer sub-board according to the reference bandwidth frequency.

[0135] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0136] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0137] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0138] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0139] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0140] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A vehicle-mounted video source compatible system, characterized in that, The vehicle-mounted video source compatible system includes: a system baseboard, a serializer sub-board, a connector, and a vehicle-mounted screen assembly; the serializer sub-board includes multiple serializers, the system baseboard and the serializer sub-board are coupled vertically, and the vehicle-mounted screen assembly is connected to any one of the serializers in the serializer sub-board through a connector; The serializer sub-board is used to detect the target serializer connected to the vehicle screen assembly in the serializer sub-board and send the protocol signal of the target serializer to the system baseboard. The system baseboard is used to receive the protocol signal sent by the serializer sub-board, identify the target serializer according to the protocol signal, and send the video signal to be sent to the target serializer in the serializer sub-board. The serializer board is used to send the video signal to be sent to the vehicle screen assembly when the target serializer receives the video signal to be sent. The serializer sub-board is used to detect the target serializer connected to the vehicle screen assembly in the serializer sub-board, and to send the protocol signal of the target serializer to the system baseboard, including: The serializer sub-board is used to detect the voltage level of each serializer in the serializer sub-board when the vehicle screen assembly is connected to the serializer in the serializer sub-board via a connector. The serializer board is also used to determine whether the level state of the serializer has changed. If the level state of the serializer has changed, the serializer with the changed level state is taken as the target serializer. The serializer sub-board is also used to acquire the protocol signal of the target serializer and send the protocol signal of the target serializer to the system baseboard.

2. The vehicle-mounted video source compatible system as described in claim 1, characterized in that, The serializer board includes a first preset serializer; Before determining whether the level state of the serializer has changed, the serializer sub-board also includes: The serializer sub-board is also used to acquire the pin status of the first preset serializer, obtain the current signal output control mode of the first preset serializer based on the pin status, and obtain the current level status of the first preset serializer based on the output control mode, so that the serializer sub-board can determine whether the level status of the first preset serializer has changed based on the current level status.

3. The vehicle-mounted video source compatible system as described in claim 1, characterized in that, The vehicle screen assembly includes a vehicle deserializer; The serializer board, after determining whether the level state of the serializer has changed, also includes: The system baseboard is used to send an address acquisition signal to the serializer sub-board when the level state of the serializer does not change; The serializer board is used to read the network address of the vehicle-mounted deserializer through the target serializer when the address acquisition signal is received, and feed the network address back to the system baseboard. The system baseboard is also used to identify the target serializer in the serializer sub-board based on the network address.

4. The vehicle-mounted video source compatible system as described in claim 3, characterized in that, The in-vehicle screen assembly also includes an in-vehicle display screen; The system baseboard is used to receive protocol signals sent by the serializer sub-board, identify the target serializer according to the protocol signals, and send the video signal to be sent to the target serializer in the serializer sub-board. It also includes: The system baseboard is also used to identify multiple target serializers based on multiple protocol signals when receiving multiple protocol signals sent by the serializer subboard, wherein the multiple target serializers correspond one-to-one with multiple vehicle-mounted displays. The system base plate is also used to obtain the resolution and screen size of the plurality of vehicle-mounted displays when the first preset number of serializers is less than or equal to a preset number; The system baseboard is also used to calculate the reference bandwidth frequency of multiple target serializers based on the computing power of the system baseboard and the resolution and screen size of the multiple vehicle-mounted displays. The system baseboard is also used to send the video signal to be sent to multiple target serializers in the target serializer sub-board according to the reference bandwidth frequency.

5. The vehicle-mounted video source compatible system as described in claim 1, characterized in that, The serializer board is used to transmit the video signal to be transmitted to the vehicle screen assembly when the target serializer receives the video signal to be transmitted, including: The serializer board is used to convert the video signal to be transmitted into a low-voltage differential signal through the target serializer when the target serializer receives the video signal to be transmitted, and to send the low-voltage differential signal to the vehicle screen assembly through the connector.

6. A method for ensuring compatibility with vehicle-mounted video sources, characterized in that, The vehicle-mounted video source compatibility method is applied to the vehicle-mounted video source compatibility system according to any one of claims 1 to 5. The vehicle-mounted video source compatibility system includes: a system baseboard, a serializer sub-board, a connector, and a vehicle-mounted screen assembly. The serializer sub-board includes multiple serializers. The system baseboard is vertically coupled to the serializer sub-board. The vehicle-mounted screen assembly is connected to any one of the serializers in the serializer sub-board through a connector. The in-vehicle video source compatibility method includes: The serializer sub-board detects the target serializer connected to the vehicle screen assembly in the serializer sub-board, obtains the protocol signal of the target serializer, and sends the protocol signal of the target serializer to the system baseboard; The system baseboard receives the protocol signal sent by the serializer sub-board, identifies the target serializer according to the protocol signal, and sends the video signal to be sent to the target serializer in the serializer sub-board. When the target serializer receives the video signal to be transmitted, the serializer board sends the video signal to be transmitted to the vehicle screen assembly. The serializer sub-board detects the target serializer connected to the vehicle screen assembly in the serializer sub-board, obtains the protocol signal of the target serializer, and sends the protocol signal of the target serializer to the system baseboard, including: When the vehicle screen assembly is connected to the serializer in the serializer sub-board via a connector, the serializer sub-board detects the voltage status of each serializer in the serializer sub-board. The serializer board determines whether the level state of the serializer has changed. If the level state of the serializer has changed, the serializer with the changed level state is taken as the target serializer. The serializer sub-board acquires the protocol signal of the target serializer and sends the protocol signal of the target serializer to the system baseboard.

7. The in-vehicle video source compatibility method as described in claim 6, characterized in that, The vehicle screen assembly includes a vehicle deserializer; After the serializer board determines whether the level state of the serializer has changed, it also includes: When the level state of the serializer does not change, the system baseboard sends an address acquisition signal to the serializer sub-board. When the serializer board receives the address acquisition signal, it reads the network address of the vehicle-mounted deserializer through the target serializer and feeds back the network address to the system baseboard. The system baseboard identifies the target serializer in the serializer sub-board based on the network address.

8. The in-vehicle video source compatibility method as described in claim 6, characterized in that, The system baseboard receives the protocol signal sent by the serializer sub-board, identifies the target serializer according to the protocol signal, and sends the video signal to be sent to the target serializer in the serializer sub-board, including: When the system baseboard receives multiple protocol signals sent by the serializer subboard, it identifies multiple target serializers based on the multiple protocol signals. Each of the multiple target serializers corresponds to one of the multiple vehicle-mounted displays. When the number of the first preset serializers is less than or equal to the preset number, the system baseboard acquires the resolution and screen size of the multiple vehicle-mounted displays. The system baseboard calculates the reference bandwidth frequency of multiple target serializers based on the computing power of the system baseboard and the resolution and screen size of the multiple vehicle-mounted displays. The system baseboard transmits the video signal to be transmitted to multiple target serializers in the target serializer sub-board according to the reference bandwidth frequency.

Images