A system and method for accessing a vehicle center screen with a rear-mounted device

Abstract

A system and method for accessing a vehicle central control screen by a rear-mounted device, the central control host is configured to output a video signal of the vehicle central control and configure each functional unit of the central control display screen; the central control display screen is configured to parse the video signal in the signal sent by the central control host; the access end and the central control host establish a connection for parsing the video signal and control signal sent by the central control host; the output end and the central control display screen establish communication for receiving the video signal generated by the rear-mounted device and transmitting the communication signal between the central control host and the central control display screen; the rear-mounted device can parse the video signal content in the signal sent by the central control host transmitted by the access end, and generate a new video signal together with its own display content; the rear-mounted device decides whether to display the video content of the central control host according to the requirement, and the synthesized video signal is displayed on the central control display screen through the output end.

Description

Technical Field

[0001] This invention discloses an access method, specifically a system and method for accessing a vehicle's central control screen using an aftermarket device. Background Technology

[0002] Currently, most car infotainment screens and central control units transmit video signals via serializers and deserializers. Aftermarket devices (such as modified reversing cameras and 360-degree panoramic dashcams) require displaying their operating status on the car's infotainment screen. Currently, for cars using serializers and deserializers, aftermarket devices achieve this by adding a control switch to the serializer / deserializer connection lines. This control adjusts the source of the video signal received by the infotainment screen, thus enabling the display of the aftermarket device's video on the car's infotainment screen.

[0003] The existing method of determining the source of the video signal received by the car's central control screen through a control switch has certain problems. First, the control switch will produce obvious abnormalities when switching displays, and may trigger abnormal states of the central control screen in some vehicles. Second, when the car's central control screen displays content from aftermarket devices, it will completely cut off the communication with the central control unit, which may trigger abnormal processing states of the central control unit in some vehicles. Summary of the Invention

[0004] To address the aforementioned issue in existing technologies where aftermarket devices are connected to vehicle central control screens via control switches, which are prone to malfunctions, this invention provides a method and system for connecting aftermarket devices to vehicle central control screens. This system uses an input end and an output end as a converter, resolving screen anomalies during display switching in existing technologies and achieving a better switching effect. It also resolves the issue of triggering abnormal states on the central control screen in some vehicles and the issue of triggering abnormal processing states on the central control unit in some vehicles.

[0005] The technical solution adopted by this invention to solve its technical problem is: a system for connecting aftermarket equipment to a vehicle's central control screen, the system comprising a central control host, a central control display screen, an access terminal, an output terminal, and aftermarket equipment, wherein,

[0006] The central control unit is used to output video signals from the vehicle's central control system, configure the various functional units of the central control display screen, and make corresponding controls according to the status of the central control display screen.

[0007] The central control display screen is used to extract the video signal from the signal sent by the central control host and report its own status information to the central control host.

[0008] The access terminal establishes a connection with the central control host to parse the video and control signals sent by the central control host, and to transmit the signals sent by the central control display screen transmitted by the output terminal.

[0009] The output end establishes communication with the central control display screen to receive video signals generated by the aftermarket equipment and to transmit communication signals between the central control host and the central control display screen.

[0010] The aftermarket device can analyze the video signal content in the signal sent by the central control host from the access end, and generate a new video signal together with its own display content. The aftermarket device decides whether to display the video content of the central control host according to the needs. The combined video signal is displayed on the central control display screen through the output end.

[0011] A method for connecting aftermarket devices to a vehicle's central control screen using a system as described above, the method comprising:

[0012] Step S1: After the access terminal and the central control host establish a communication connection, the central control host sends its control signals to the central control display screen to the access terminal, and at the same time sends the video signal at startup.

[0013] Step S2: When the connection between the access end and the central control host is established, the output end is also connected to the central control display screen. At this time, the output end transmits various status control signals of the central control display screen to the central control host through the access end, and at the same time receives various signals transmitted from the central control host through the access end, and then sends them to the central control display screen.

[0014] Step S3: After the initial control signal transmission is completed, the central control host starts to transmit video signals. The access end transfers the video signals to the aftermarket equipment. The aftermarket equipment parses the video signal content of the central control host, adds its own display content, and then reassembles a video signal, which is then displayed on the central control display screen via the output end.

[0015] Step S4: After the initial configuration of the central control unit and the central control display screen, the central control unit queries data information based on the status of the central control display screen.

[0016] The technical solution adopted by the present invention to solve its technical problem further includes:

[0017] The central control unit is also used to query the touch data of the central control display screen when needed.

[0018] The access point uses the serializer of the central control host.

[0019] The output terminal uses a serializer for the central control display screen.

[0020] The output terminal establishes a connection with the central control display screen and transmits signals other than video signals received by the access terminal from the central control host to the central control display screen.

[0021] The central control display screen transmits control signals to the central control host. In addition to relaying control signals between the central control host and the central control display screen, the access end and the output end also transmit these control signals emitted by the central control display screen to the aftermarket equipment.

[0022] Once the central control host determines that the initial connection is successful, all functional modules of the central control display screen will be activated; otherwise, only some modules of the central control display screen will be working.

[0023] The retrofitted equipment determines when to display the content of the central control host and when to display its own content based on its needs.

[0024] The access and output terminals can also control the communication between the central control host and the central control display screen during the relay communication.

[0025] The beneficial effects of this invention are as follows: The central control display screen continuously receives the same video signal, eliminating the various display problems caused by switching the connection lines of the central control display screen using a control switch. The central control host maintains continuous communication with the central control display screen for signals other than the video signal, preventing the abnormal status problems of the central control host caused by completely cutting off communication in existing technologies. The aftermarket device in this invention has the function of parsing the video signal from the central control host; the input and output ends can act as relays to transmit control signals between the central control host and the central control screen, and the transmitted signals can be changed as needed.

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the method for connecting aftermarket equipment to the vehicle's central control screen in this invention.

[0028] Figure 2 This is a system block diagram of the aftermarket equipment connected to the vehicle's central control screen in this invention.

[0029] Figure 3 This is a block diagram of the central control display screen in this invention.

[0030] Figure 4 This is a block diagram of the central control unit in this invention.

[0031] Figure 5 This is a block diagram of the output portion of the present invention.

[0032] Figure 6 This is a block diagram of the access terminal portion of the present invention.

[0033] Figure 7 This is a block diagram of the aftermarket equipment in this invention. Detailed Implementation

[0034] This embodiment is a preferred embodiment of the present invention. All other embodiments that are the same as or similar to this embodiment in principle and basic structure are within the protection scope of the present invention.

[0035] Please refer to the appendix for details. Figure 1 To be continued Figure 7 This invention primarily protects a method for connecting aftermarket equipment to a vehicle's central control screen, the method mainly comprising:

[0036] This invention uses a serializer and a deserializer that are matched with the central control host and the central control display screen as the access end and output end, respectively.

[0037] The serializer at the access end establishes a connection with the central control host and receives various communication signals from the central control host; the deserializer at the output end establishes a connection with the central control display screen and transmits signals other than video signals received by the access end from the central control host to the central control display screen.

[0038] The access terminal transmits the video signal from the central control host to the aftermarket device. The aftermarket device parses the video signal content of the central control host and combines it with its own display content to form a single video signal. The combined video signal is then output to the central control display screen for display.

[0039] Since the video content of the central control unit and the video content of the aftermarket equipment are on the same video signal, the aftermarket equipment can decide whether to display the video content of the central control unit according to its needs.

[0040] The central control display screen transmits control signals to the central control unit, such as touch signals. In addition to relaying these control signals between the central control unit and the central control display screen, the input and output terminals can also transmit these control signals from the central control display screen to aftermarket devices without affecting the status of the central control unit.

[0041] Please refer to the appendix carefully. Figure 1 , attached Figure 1 This is a schematic flowchart illustrating an embodiment of a method for connecting an aftermarket device to a vehicle's central control screen provided by the present invention. In this embodiment, the method for securely connecting the aftermarket device to the vehicle's electronic system includes the following steps:

[0042] Step S1: After the access terminal and the central control unit establish a communication connection, the central control unit will send its control signals to the central control display screen to the access terminal, and simultaneously send the startup video signal. The central control unit is actually the controller for most of the functional units within the central control display screen, hence the presence of control signals. Only after the central control unit determines that the initial connection is successful will all functional modules of the central control display screen be activated; otherwise, only some modules of the central control display screen will operate.

[0043] Step S2: While the access terminal establishes a connection with the central control host, the output terminal also establishes a connection with the central control display screen. At this time, the output terminal mainly transmits various status control signals from the central control display screen to the central control host via the access terminal, and simultaneously receives various signals from the central control host via the access terminal, and then sends them to the display screen.

[0044] Step S3: After the initial control signal transmission is completed, the central control unit begins transmitting video signals. The access end forwards the video signal to the aftermarket device. The aftermarket device parses the video signal content from the central control unit, adds its own display content, and then reassembles it into a single video signal, which is then output to the central control display screen. Since the final displayed video signal is regenerated by the aftermarket device, the aftermarket device can decide when to display the central control unit's content and when to display its own content based on its needs.

[0045] In step S4, besides video signals, there is also other signal exchange between the central control host and the central control display screen. After the initial configuration of the central control host and the central control display screen, the central control host mainly queries information such as touch data based on the status of the display screen. When the access end and the output end relay the communication between the central control host and the central control display screen, they can also control the communication between them, such as allowing aftermarket devices to use the touch information of the central control display screen without affecting the central control host.

[0046] Please refer to the appendix for details. Figure 2 To be continued Figure 7 , attached Figure 2 A schematic diagram of an embodiment of the system for providing a method for connecting aftermarket devices to a vehicle's central control screen according to the present invention is provided, in conjunction with... Figures 3 to 7 As shown, the embodiment includes:

[0047] The vehicle has a central control unit (CCU) and a central control display system. The CCU outputs video signals to the vehicle's central control system and is responsible for configuring the various functional units of the central control display. It also needs to make corresponding controls based on the status of the central control display and query touch data when necessary. The central control display needs to interpret the video signals. Some functional modules on the vehicle are configured by the CCU, but the display also needs to report its own status information to the CCU.

[0048] The access terminal, output terminal, and aftermarket equipment are the main modules of this invention.

[0049] The access point needs to establish a connection with the central control unit. It must be able to parse the video and control signals sent by the host, and simultaneously transmit the signals emitted by the central control display screen from the output end. The access point is also the main component controlling the communication between the central control unit and the central control display screen.

[0050] The aftermarket device can analyze the video signal content from the signal transmitted from the central control unit at the access point and generate a new video signal together with its own display content. It can also use the communication signals between the central control unit and the central control display screen to achieve functions such as touch control.

[0051] The output terminal establishes communication with the central control display screen. It receives video signals generated by the aftermarket equipment and transmits communication signals between the central control host and the central control display screen.

[0052] In this invention, the central control display screen continuously receives the same video signal, eliminating the display problems caused by switching the connection lines of the central control display screen using a control switch. In this invention, the central control host maintains continuous communication with the central control display screen for signals other than the video signal, preventing the abnormal status problems of the central control host caused by completely cutting off communication in existing technologies. The aftermarket device in this invention has the function of parsing the video signal from the central control host; the input and output ends can act as relays to transmit control signals between the central control host and the central control screen, and the transmitted signals can be changed as needed.

Claims

1. A system for connecting aftermarket equipment to a vehicle's central control screen, characterized in that: The system includes a central control host, a central control display screen, an access terminal, an output terminal, and aftermarket equipment, wherein, The central control unit is used to output video signals from the vehicle's central control system, configure the various functional units of the central control display screen, and make corresponding controls according to the status of the central control display screen. The central control display screen is used to extract the video signal from the signal sent by the central control host and report its own status information to the central control host. The access terminal establishes a connection with the central control host to parse the video and control signals sent by the central control host, and to transmit the signals sent by the central control display screen transmitted by the output terminal. The output terminal establishes communication with the central control display screen to receive video signals generated by the aftermarket equipment and transmit communication signals between the central control host and the central control display screen. The output terminal establishes a connection with the central control display screen and transmits signals other than video signals received by the access terminal from the central control host to the central control display screen. The central control display screen transmits control signals to the central control host. In addition to relaying control signals between the central control host and the central control display screen, the access terminal and the output terminal also transmit these control signals from the central control display screen to the aftermarket equipment. The aftermarket device can analyze the video signal content in the signal sent by the central control host from the access end, and generate a new video signal together with its own display content. The aftermarket device decides whether to display the video content of the central control host according to the needs. The combined video signal is displayed on the central control display screen through the output end.

2. The system for connecting aftermarket equipment to the vehicle's central control screen according to claim 1, characterized in that: The central control unit is also used to query the touch data of the central control display screen when needed.

3. The system for connecting aftermarket equipment to the vehicle's central control screen according to claim 1, characterized in that: The access point uses the serializer of the central control host.

4. The system for connecting aftermarket equipment to the vehicle's central control screen according to claim 1, characterized in that: The output terminal uses a serializer for the central control display screen.

5. A method for connecting an aftermarket device to a vehicle's central control screen using a system as described in any one of claims 1 to 4, characterized in that: The method includes: Step S1: After the access terminal and the central control host establish a communication connection, the central control host sends its control signals to the central control display screen to the access terminal, and at the same time sends the video signal at startup. Step S2: When the connection between the access end and the central control host is established, the output end is also connected to the central control display screen. At this time, the output end transmits various status control signals of the central control display screen to the central control host through the access end, and at the same time receives various signals transmitted from the central control host through the access end, and then sends them to the central control display screen. Step S3: After the initial control signal transmission is completed, the central control host starts to transmit video signals. The access end transfers the video signals to the aftermarket equipment. The aftermarket equipment parses the video signal content of the central control host, adds its own display content, and then reassembles a video signal, which is then displayed on the central control display screen via the output end. Step S4: After the initial configuration of the central control unit and the central control display screen, the central control unit queries data information based on the status of the central control display screen.

6. The method for connecting aftermarket equipment to a vehicle's central control screen according to claim 5, characterized in that: Once the central control host determines that the initial connection is successful, all functional modules of the central control display screen will be activated; otherwise, only some modules of the central control display screen will be working.

7. The method for connecting aftermarket equipment to a vehicle's central control screen according to claim 5, characterized in that: The retrofitted equipment determines when to display the content of the central control host and when to display its own content based on its needs.

8. The method for connecting aftermarket equipment to a vehicle's central control screen according to claim 5, characterized in that: The access and output terminals can also control the communication between the central control host and the central control display screen during the relay communication.

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