A method and system for displaying linkage uniform timing of a vehicle, and a vehicle

Abstract

The application discloses a kind of vehicle display linkage unified timing method, it is characterized in that: using information field controller to carry out coordination control to multiple vehicle display terminals, when display effect switches, according to the communication distance between each vehicle display terminal and information field controller, communication mode, the timing of control signal sent to each vehicle display terminal is adjusted by information field controller, then control signal is sent to each vehicle display terminal in turn according to timing.The application has the advantages that: using information field controller to carry out unified control to the change of the display effect of vehicle, can achieve the unity of switching, improve the unity of display screen switching in intelligent cockpit, overall coordinated display effect, solve the problem that single display terminal and overall display effect switching time are not unified.

Description

Technical Field

[0001] This invention relates to the field of intelligent cockpits for automobiles, and in particular to a method for unified timing of in-vehicle display linkage. Background Technology

[0002] With the increasing adoption of smart cockpits, the number of display areas used within cockpits is growing. When multiple display areas work together in unison, inconsistencies in system timing have become a new display problem. Current solutions rely on individual controllers managing the display. This results in users experiencing different display areas switching at different times depending on the order in which signals are received. Therefore, achieving coordinated multi-area display and standardizing display switching times has become a problem that needs to be solved.

[0003] Currently, the display area in smart cockpits has expanded from a simple display screen to multiple control terminals. Traditional display linkage only involves displays controlled by the same controller, eliminating the problem of large time differences in display effect switching. New in-vehicle display areas have expanded from single controllers to multiple controllers. Switching a display effect involves the coordination of multiple controllers. Furthermore, differences in communication protocols, methods, and cable materials between controllers lead to variations in communication times, causing the switching signal to reach each controller at different times. This results in inconsistent switching execution by each controller, leading to inconsistent effect switching, a technical problem that current technology cannot yet solve. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for unified timing of vehicle display linkage, which solves the defect of inconsistent switching of display effects among multiple vehicle displays.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a method for unified timing of vehicle display linkage, which uses an information domain controller to coordinate and control multiple vehicle display terminals. When switching display effects, the information domain controller adjusts the timing of the control signals sent to each vehicle display terminal according to the communication distance and communication method between each vehicle display terminal and the information domain controller, and then sends the control signals to each vehicle display terminal in sequence according to the timing.

[0006] The information domain controller and the vehicle display terminal transmit and interact control signals via Ethernet, CAN, LIN, hardwire, or any combination thereof.

[0007] After receiving the input signal for switching display effects, the information domain controller calculates the time from the sending of the control signal to the delivery of the control signal to each vehicle display terminal. Then, based on the requirement that the control signal is executed by each vehicle display terminal at the same time, it calculates the delay time corresponding to sending the switching control signal to each vehicle display terminal, and sends the effect switching control signal to each vehicle display terminal in sequence according to the timing corresponding to the delay time.

[0008] When calculating latency, the information domain controller takes into account the communication protocol, transmission line material, and transmission method.

[0009] The information domain controller includes a control chip (MCU) and a system chip (SOC). Through coordinated control of the MCU and SOC, control signals for switching display effects are sequentially issued in a timing manner. The MCU and SOC are communicatively connected. The MCU receives input switching adjustment signals or issues corresponding control signals for switching via CAN communication or hardwired communication. The SOC receives input switching adjustment signals or issues corresponding control signals for switching via Ethernet communication.

[0010] When the adjustment signal is sent to the MCU via hardwire, the MCU delays the hardwire signal and waits. After receiving the CAN signal that needs to be changed, it sends the change command as a CAN signal within 100ms of the next message cycle. At the same time as the CAN command is sent, the change command is sent to the SOC, and the SOC sends out the Ethernet signal. The SOC sends the hardwire signal 50ms after the MCU command is sent.

[0011] When the adjustment signal is sent to the MCU via CAN, the MCU receives the CAN signal that needs to be changed and sends the change command as a CAN signal in the next message cycle. At the same time as the CAN command is sent, the change command is sent to the SOC, which sends out an Ethernet signal. 50ms after the command is sent, the hardwire signal is sent.

[0012] When the adjustment signal is sent to the SOC via Ethernet, the SOC will receive the information that needs to be changed and send it to the MCU. After the MCU receives the CAN signal that needs to be changed, it will send the change command as a CAN signal in the next message cycle. After the CAN command is sent, the change command is sent to the SOC, and the SOC sends out the Ethernet signal. 50ms after the command is sent, the hardwire signal is sent.

[0013] A system for unified timing of vehicle-mounted display linkage is provided. The system includes an information domain controller, which is connected to each vehicle-mounted display terminal. The information domain controller controls the switching of vehicle-mounted displays using the aforementioned unified timing method for vehicle-mounted display linkage.

[0014] A car, the car including the method for unifying the timing of the in-vehicle display linkage.

[0015] The advantages of this invention are: by using an information domain controller to uniformly control changes in the vehicle's display effect, the switching can be unified, improving the uniformity of display screen switching in the smart cockpit, coordinating the overall display effect, and solving the problem of inconsistent switching times between individual display terminals and the overall display effect. Attached Figure Description

[0016] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0017] Figure 1 This is a schematic diagram illustrating the connection relationship between the information domain controller and the vehicle-mounted display terminal of the present invention;

[0018] Figure 2 This is a schematic diagram of the information domain controller of the present invention.

[0019] Figure 3 This is a schematic diagram of the workflow of the present invention. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0021] This method for unified timing of vehicle-mounted display linkage coordinates various controllers that require changes, based on their communication methods, through a single controller. According to the unified coordination result, each controller receives a unified time command, achieving a unified switching effect for the vehicle-mounted display linkage.

[0022] like Figure 1-3 As shown, a method for unified timing of vehicle display linkage is to use an information domain controller to coordinate and control multiple vehicle display terminals. When switching display effects, the information domain controller adjusts the timing of the control signals sent to each vehicle display terminal according to the communication distance and communication method between each vehicle display terminal and the information domain controller, and then sends the control signals to each vehicle display terminal in sequence according to the timing.

[0023] The information domain controller and the vehicle display terminal communicate and interact via Ethernet, CAN, LIN, or hardwired connections, or a combination thereof. Upon receiving an input signal for display effect switching, the information domain controller calculates the time it takes for the control signal to travel from its origin to each vehicle display terminal. Then, based on the requirement that the control signal be executed at the same time by each vehicle display terminal, it calculates the delay time corresponding to sending the switching control signal to each vehicle display terminal, and sends the effect switching control signal to each vehicle display terminal sequentially according to the timing of the delay time.

[0024] When calculating latency, the information domain controller incorporates communication protocols, transmission line materials, and transmission methods. Since the time required for the information domain controller to send the corresponding control signal to the controllers of each in-vehicle display terminal varies, to achieve a synchronized and unified switching effect, it is necessary to calculate the transmission time from the information domain controller to each in-vehicle display terminal, as well as the time affected by each in-vehicle display terminal. Based on the transmission and response times, the time required from the information domain controller issuing the control signal to each in-vehicle display device completing the switching can be calculated. Then, the longest time between the information domain controller issuing the switching control command and the in-vehicle display terminal completing the switching is used as the base, and a latency is added to each of the shorter times to match the longest time. This time is then recorded. The delay time of each vehicle-mounted display terminal is determined. Then, the information domain controller first sends the switching control command to the vehicle-mounted display terminal with the longest switching time. After sending the command to the vehicle-mounted display terminal with the longest switching time, a delay begins immediately. Then, when the delay reaches the corresponding time of the vehicle-mounted display terminal, a switching control signal is sent to that corresponding vehicle-mounted display terminal. This completes the sending of the switching control signal for each vehicle-mounted display terminal. After receiving the switching control signal, each vehicle-mounted display terminal device begins to execute, thereby achieving the purpose of consistent display effect switching. Since the delay time takes into account the transmission time and the controller response time, the uniformity of display effect switching can be achieved by controlling according to this method.

[0025] The information domain controller includes a control chip (MCU) and a system chip (SOC) (the MCU performs low-level logic operations and receives communication signals, while the SOC supports display information and interface processing, and supports system operations). Through coordinated control of the MCU and SOC, control signals for switching display effects are sequentially issued in a timing manner. The MCU and SOC are communicatively connected. The MCU receives input switching adjustment signals or issues corresponding control signals for switching via CAN communication or hardwired communication. The SOC receives input switching adjustment signals or issues corresponding control signals for switching via Ethernet communication.

[0026] When the adjustment signal is sent to the MCU via hardwire, the MCU delays the hardwire signal and waits. Upon receiving the CAN signal that needs to be changed (a hardwire signal refers to a signal directly connected to the MCU via copper wire, such as some ambient light signals; or CAN signals received from other controllers, such as the starry sky roof signal sent by the vehicle's domain controller), the MCU sends the change command as a CAN signal within 100ms of the next message cycle. Simultaneously with the CAN command, the change command is sent to the SOC, which then sends an Ethernet signal. The SOC sends the hardwire signal 50ms after the MCU command.

[0027] When the adjustment signal is sent to the MCU via CAN, the MCU receives the CAN signal that needs to be changed and sends the change command as a CAN signal in the next message cycle. At the same time as the CAN command is sent, the change command is sent to the SOC, which sends out an Ethernet signal. 50ms after the command is sent, the hardwire signal is sent.

[0028] When the adjustment signal is sent to the SOC via Ethernet, the SOC will receive the information that needs to be changed and send it to the MCU. After the MCU receives the CAN signal that needs to be changed, it will send the change command as a CAN signal in the next message cycle. After the CAN command is sent, the change command is sent to the SOC, and the SOC sends out the Ethernet signal. 50ms after the command is sent, the hardwire signal is sent.

[0029] This embodiment also provides a system for unified timing of vehicle display linkage. The system includes an information domain controller, which is connected to each vehicle display terminal. The information domain controller uses the unified timing method for vehicle display linkage in this embodiment to control the switching of vehicle displays.

[0030] This embodiment also provides a car that includes the above-described method for controlling the switching of display effects.

[0031] Because of the presence of multiple onboard devices, switching a display effect involves the coordination of multiple controllers. This solution unifies the timing of multiple display area controllers (such as ambient lighting, fragrance systems, backlighting, starry sky projection, and smart surfaces) that use different communication protocols and methods within the vehicle. Then, based on the different communication protocols and methods, the controller issues switching time points, thereby achieving the goal of switching display effects simultaneously.

[0032] Due to differences in communication protocols and transmission line materials, signal transmission times vary. High-speed CAN communication uses 500kbps, LIN communication uses 19.2kbps, CANFD communication uses 2Mbps, and Ethernet offers 1Gbps and 100Mbps. Different communication protocols correspond to different signal transmission rates. Using different materials, such as coaxial cable, LVDS cable, CAN cable, and network cable, also affects the transmission rate. When using Ethernet communication, a single Ethernet signal transmission takes approximately 2ms. When using hard-wired communication, a single hard-wired signal transmission within the vehicle takes approximately 0.2ms, typically using 20 cycles for hard-wired signal detection, resulting in a delay of about 4ms. When using CAN signals, a 100ms cycle signal is used. Due to the need to wait for the complete signal transmission, there may be a 99ms delay. If transmission occurs across controllers via a gateway, the delay time will increase depending on controller priority and network load, potentially reaching around 104ms.

[0033] Within the information domain controller, the coordinated control of the MCU and SOC achieves the goal of unified control of timing signals.

[0034] When the adjustment signal is sent to the MCU via hardwired connection, the MCU delays the hardwired signal and waits. Upon receiving the CAN signal requiring modification, it sends the modification command as a CAN signal within 100ms of the next message cycle. Simultaneously with the CAN command, the modification command is sent to the SOC, which then sends an Ethernet signal. The hardwired signal is sent 50ms after the command is sent.

[0035] When the adjustment signal is sent to the MCU via CAN, the MCU, upon receiving the CAN signal requiring change, will send the change command as a CAN signal in the next message cycle. Simultaneously with the CAN command, the change command is sent to the SOC, which then sends an Ethernet signal. The hardwired signal is sent 50ms after the command is sent.

[0036] When the adjustment signal is sent to the SOC via Ethernet, the SOC receives the information requiring change and sends it to the MCU. Upon receiving the CAN signal requiring change, the MCU sends the change command as a CAN signal in the next message cycle. After the CAN command is sent, the change command is sent to the SOC, which then sends the Ethernet signal. The hardwired signal is sent 50ms after the command is sent.

[0037] like Figure 3 The diagram shown illustrates the system's working principle, which is as follows:

[0038] (1) The vehicle is powered on and each controller has started.

[0039] (2) The whole vehicle network starts up and can perform data interaction.

[0040] (3) Adjustment of display mode triggered by a single terminal

[0041] (4) The information domain controller receives the adjustment command.

[0042] (5) Adjust the command sending time according to the communication protocol used by the controller.

[0043] (6) Record the time point received by the hardwired controller in the next Info CAN message cycle;

[0044] (7) Record the time point of the received CAN signal and send it in the next Info CAN message cycle;

[0045] (8) Record the time point of the received Ethernet signal and send it in the next Info CAN message cycle;

[0046] (9) After adjusting the display mode switching command, send the next Info CAN time point to each controller.

[0047] (10) Different controllers switch display effects simultaneously according to the instructions of the information domain controller.

[0048] The new method for unified timing of in-vehicle display linkage addresses the issue where individual controllers switch independently when given a command to change display effects, resulting in inconsistent display timing. This is achieved by adjusting the timing of control signals based on the different communication protocols used by each controller. By time-division sequencing according to the time periods of different communication protocols and the processing progress of each controller, the cockpit display effects can switch simultaneously.

[0049] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A method for unified timing of in-vehicle display linkage, characterized in that: An information domain controller is used to coordinate and control multiple vehicle display terminals. When switching display effects, the information domain controller adjusts the timing of the control signals sent to each vehicle display terminal according to the communication distance and communication method between each vehicle display terminal and the information domain controller, and then sends the control signals to each vehicle display terminal in sequence according to the timing. The information domain controller and the vehicle display terminal transmit and interact control signals through Ethernet, CAN, LIN, hardwire, or any combination thereof. The information domain controller includes a control chip (MCU) and a system chip (SOC). Through coordinated control of the MCU and SOC, control signals for switching display effects are sequentially issued in a timing manner. The MCU and SOC are communicatively connected. The MCU receives input switching adjustment signals or issues corresponding control signals for switching via CAN communication or hardwired communication. The SOC receives input switching adjustment signals or issues corresponding control signals for switching via Ethernet communication.

2. The method for unified timing of vehicle-mounted display linkage as described in claim 1, characterized in that: After receiving the input signal for switching display effects, the information domain controller calculates the time from the sending of the control signal to the delivery of the control signal to each vehicle display terminal. Then, based on the requirement that the control signal is executed by each vehicle display terminal at the same time, it calculates the delay time corresponding to sending the switching control signal to each vehicle display terminal, and sends the effect switching control signal to each vehicle display terminal in sequence according to the timing corresponding to the delay time.

3. The method for unified timing of vehicle-mounted display linkage as described in claim 2, characterized in that: When calculating latency, the information domain controller takes into account the communication protocol, transmission line material, and transmission method.

4. The method for unified timing of vehicle-mounted display linkage as described in claim 1, characterized in that: When the adjustment signal is sent to the MCU via hardwire, the MCU delays the hardwire signal and waits. After receiving the CAN signal that needs to be changed, it sends the change command as a CAN signal within 100ms of the next message cycle. At the same time as the CAN command is sent, the change command is sent to the SOC, and the SOC sends out the Ethernet signal. The SOC sends the hardwire signal 50ms after the MCU command is sent.

5. The method for unified timing of vehicle-mounted display linkage as described in claim 1, characterized in that: When the adjustment signal is sent to the MCU via CAN, the MCU receives the CAN signal that needs to be changed and sends the change command as a CAN signal in the next message cycle. At the same time as the CAN command is sent, the change command is sent to the SOC, which sends out an Ethernet signal. 50ms after the command is sent, the hardwire signal is sent.

6. The method for unified timing of vehicle-mounted display linkage as described in claim 1, characterized in that: When the adjustment signal is sent to the SOC via Ethernet, the SOC will receive the information that needs to be changed and send it to the MCU. After the MCU receives the CAN signal that needs to be changed, it will send the change command as a CAN signal in the next message cycle. After the CAN command is sent, the change command is sent to the SOC, and the SOC sends out the Ethernet signal. 50ms after the command is sent, the hardwire signal is sent.

7. A system for unified timing of vehicle-mounted display linkage, characterized in that: The system includes an information domain controller, which is connected to each vehicle display terminal. The information domain controller controls the switching of vehicle displays using the unified timing method for vehicle display linkage as described in any one of claims 1-6.

8. A car, characterized in that: The vehicle includes the in-vehicle display linkage and unified timing system as described in claim 7.

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