Rear row display device based on front row interaction, control method thereof, and display equipment

Abstract

This invention belongs to the field of vehicle display technology, and discloses a rear-seat display device based on front-seat interaction, its control method, and display equipment. The device includes a connected display module and an interaction module. The interaction module includes a connected microcontroller and a video deserializer. When the microcontroller receives a touch interrupt signal from the display module, it reads and parses the touch data. When interaction with the front-seat display is required, it generates a front-seat interaction control signal. The video deserializer transmits the front-seat interaction control signal to the control unit via a video serializer. The control unit outputs a response video signal to the video serializer. The video deserializer parses the response video signal sent by the video serializer and sends the parsed video signal to the microcontroller. The microcontroller converts the received parsed video signal and outputs it to the display module for display. Through this method, this invention enables multi-screen interaction between the rear-seat display and the front-seat display via touch, and the implementation cost is relatively low.

Description

Technical Field

[0001] This invention relates to the field of vehicle display technology, and in particular to a rear-seat display device based on front-seat interaction, its control method, and display equipment. Background Technology

[0002] With the advancement of automotive intelligence, in-vehicle displays are becoming increasingly popular, especially rear-seat displays. Rear-seat displays mainly include air conditioning screens and armrest screens. They typically employ a CPU (Central Processing Unit) + MCU (Microcontroller Unit) control scheme. However, this scheme is costly in the current scenario where the main screen and display are designed separately, failing to meet market demands. Furthermore, it does not allow for multi-screen control and interaction between the rear-seat display and the front display.

[0003] 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

[0004] The main objective of this invention is to provide a rear-row display device and its control method and display equipment based on front-row interaction, aiming to solve the technical problems of high cost and inability to interact with the front-row display screen through touch in the traditional rear-row display screen control scheme in the prior art.

[0005] To achieve the above objectives, the present invention provides a rear-row display device based on front-row interaction. The rear-row display device based on front-row interaction includes a display module and an interaction module connected together. The interaction module is connected to a host computer and includes a microcontroller and a video deserializer connected together. The microcontroller is connected to the display module. The host computer is provided with a video serializer and a control unit for the front-row display screen. The video serializer is connected to the control unit, and the video deserializer is connected to the video serializer.

[0006] The display module is used to send a touch interrupt signal to the microcontroller when it receives a user's touch operation, and to generate touch data based on the touch operation;

[0007] The microcontroller is used to read the touch data and parse the touch data when it receives the touch interruption signal, and to determine whether it needs to interact with the front display screen.

[0008] The microcontroller is also used to generate a front-row interaction control signal based on the touch data when interaction with the front-row display is required. The front-row interaction control signal includes a front-row interaction signal and a front-row control signal.

[0009] The video deserializer is used to transmit the front row interactive control signal through the video serializer to the control unit, so that the control unit can parse the front row interactive control signal and output a response video signal to the video serializer;

[0010] The video deserializer is also used to parse the response video signal sent by the video serializer to obtain a parsed video signal, and send the parsed video signal to the microcontroller;

[0011] The microcontroller is also used to convert the received parsed video signal and output it to the display module for display.

[0012] Optionally, the interaction module further includes a forwarding unit, which is connected to the microcontroller;

[0013] The microcontroller is also used to determine the interaction object and generate an interaction control signal based on the touch data when there is no need to interact with the front display screen.

[0014] The forwarding unit is used to forward the interactive control signal to the interactive object for control interaction.

[0015] Optionally, the forwarding unit includes a control transceiver connected to a controller local area network bus, and the control transceiver is connected to the microcontroller;

[0016] The control transceiver is used to forward the interactive control signals to the controller local area network bus;

[0017] The controller local area network bus is used to send the interactive control signals to the interactive object.

[0018] Optionally, the display module includes a display screen, and the display screen is provided with a touch unit;

[0019] The touch unit is used to acquire the user's touch operation, determine the touch event type, touch event label, and touch event coordinates based on the touch operation, and determine touch data based on the touch event type, the touch event label, and the touch event coordinates.

[0020] Optionally, the microcontroller includes a built-in storage unit;

[0021] The built-in storage unit is used to store software code and configuration data.

[0022] Optionally, the interaction module further includes an external storage unit, which is connected to the microcontroller;

[0023] The external storage unit is used to store image data and font data.

[0024] Furthermore, to achieve the above objectives, the present invention also proposes a control method for a rear-row display device based on front-row interaction. This control method is applied to the aforementioned rear-row display device based on front-row interaction and includes the following steps:

[0025] When the display module receives a user's touch operation, it sends a touch interrupt signal to the microcontroller and generates touch data based on the touch operation.

[0026] When the microcontroller receives the touch interrupt signal, it reads the touch data, parses the touch data, and determines whether it needs to interact with the front display screen.

[0027] When the microcontroller needs to interact with the front display screen, it generates a front interaction control signal based on the touch data. The front interaction control signal includes a front interaction signal and a front control signal.

[0028] The video deserializer transmits the front-row interactive control signal through the video serializer to the control unit, so that the control unit can parse the front-row interactive control signal and output a response video signal to the video serializer;

[0029] The video deserializer parses the response video signal sent by the video serializer to obtain a parsed video signal, and sends the parsed video signal to the microcontroller;

[0030] The microcontroller converts the received parsed video signal and outputs it to the display module for display.

[0031] Optionally, the rear display device based on front-row interaction further includes a forwarding unit. When the microcontroller receives the touch interruption signal, it reads the touch data, parses the touch data, and determines whether interaction with the front display screen is needed. The microcontroller then further includes:

[0032] When the microcontroller does not need to interact with the front display screen, it determines the interaction object and generates an interaction control signal based on the touch data.

[0033] The forwarding unit forwards the interaction control signal to the interaction object for control interaction.

[0034] Optionally, generating touch data based on the touch operation includes:

[0035] The display module determines the touch event type, touch event label, and touch event coordinates based on the touch operation;

[0036] The display module determines the touch data based on the touch event type, the touch event label, and the touch event coordinates.

[0037] Furthermore, to achieve the above objectives, the present invention also proposes a display device, which includes the aforementioned rear-row display device based on front-row interaction, and applies the steps of the aforementioned rear-row display device control method based on front-row interaction.

[0038] In this invention, the rear-row display device based on front-row interaction includes a connected display module and an interaction module. The interaction module is connected to a host computer and includes a connected microcontroller and a video deserializer. The microcontroller is connected to the display module. The host computer has a video serializer and a control unit for the front-row display screen. The video serializer is connected to the control unit, and the video deserializer is connected to the video serializer. The display module is used to send a touch interrupt signal to the microcontroller when it receives a user's touch operation and generate touch data based on the touch operation. The microcontroller is used to read the touch data and parse the touch data when it receives the touch interrupt signal. When interaction with the front-row display screen is required, it generates a front-row interaction control signal based on the touch data. The video deserializer is used to transmit the front-row interaction control signal through the video serializer to the control unit so that the control unit can parse the front-row interaction control signal and output a response video signal to the video serializer. The video deserializer is also used to parse the response video signal sent by the video serializer to obtain a parsed video signal and send the parsed video signal to the microcontroller. The microcontroller is also used to convert and output the received parsed video signal to the display module for display. Compared to traditional rear-seat display control solutions, which are costly and cannot interact with the front-seat display via touch, this invention adds a multi-screen interaction function while retaining the basic functions of the rear-seat display. This allows for multi-screen interaction between the rear-seat display and the front-seat display via touch, and the implementation cost is low, meeting market demand. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the first embodiment of the rear display device based on front-row interaction according to the present invention;

[0040] Figure 2 This is a schematic diagram of the conventional structure of a rear-row display device based on front-row interaction according to an embodiment of the present invention;

[0041] Figure 3 This is a detailed structural diagram of the display module of an embodiment of the rear display device based on front-row interaction according to the present invention;

[0042] Figure 4This is a schematic diagram of the structure of a second embodiment of the rear display device based on front-row interaction according to the present invention;

[0043] Figure 5 This is a flowchart illustrating the first embodiment of the rear display device control method based on front-row interaction according to the present invention.

[0044] Figure 6 This is a schematic diagram of the front-to-back interaction process of an embodiment of the front-to-back interaction-based rear-row display device control method of the present invention.

[0045] Explanation of icon numbers:

[0046] label name label name 10 Display module 204 External storage unit 20 Interactive module 301 Video serializer 30 host 302 Control Unit 101 Display screen 1011 Touch unit 201 microcontroller 2011 Built-in storage unit 202 Video deserializer 2031 Control transceiver 203 Forwarding Unit 2032 Controller Area Network Bus

[0047] 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

[0048] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0051] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0052] This invention provides a rear-row display device based on front-row interaction, referring to... Figure 1 , Figure 1This is a schematic diagram of the structure of a first embodiment of a rear-row display device based on front-row interaction according to the present invention.

[0053] In this embodiment, the rear display device based on front-row interaction includes a display module 10 and an interaction module 20 connected together. The interaction module 20 is connected to the host 30. The interaction module 20 includes a microcontroller 201 and a video deserializer 202 connected together. The microcontroller 201 is connected to the display module 10. The host 30 is provided with a video serializer 301 and a control unit 302 for the front-row display screen. The video serializer 301 is connected to the control unit 302, and the video deserializer 202 is connected to the video serializer 301.

[0054] It should be noted that the traditional structure of the rear-seat display screen is as follows: Figure 2 As shown, the CPU has 2D rendering capabilities, converting HMI (Human Machine Interface) images into LVDS (Low Voltage Differential Signaling) signals for transmission to the rear display screen. The rear display screen parses and displays the LVDS signals. The rear display screen integrates a touch module, which notifies the CPU via an interrupt signal. The CPU reads relevant touch data through the I2C (Integrated Circuit Bus) interface, parses and processes the touch data, and sends control signals to the MCU (Universal Asynchronous Receiver / Transmitter) via UART (Universal Asynchronous Receiver / Transmitter). The MCU converts the control signals according to the CAN (Controller Area Network) DBC file (DatabaseCan), and finally forwards them to the CAN bus via a CAN transceiver for control interaction with other control units (excluding the front display screen's control unit). This traditional solution is essentially a CPU+MCU control scheme, which is costly in current main screen (separate design of host and display screen) separation schemes, failing to meet market demands. Furthermore, it cannot achieve multi-screen control interaction by controlling the front display screen via the rear display screen's touch input.

[0055] It is understood that the microcontroller (MCU) 201 in this embodiment supports 2D (two-dimensional) rendering and has a high clock speed. It also supports LVDS video interface and CAN filter, which is equivalent to having... Figure 2 The traditional solution uses a CPU+MCU combination, which allows this embodiment to reduce the CPU chip by one without changing the requirements, thereby reducing the cost of the solution. In addition, a video deserializer 202 is added for interaction with the front display screen.

[0056] It should be understood that the display module 10 is used to send the touch interrupt signal to the microcontroller 201 when it receives a user's touch operation, and to generate touch data according to the touch operation.

[0057] Furthermore, such as Figure 3 As shown, the display module 10 includes a display screen 101, in which a touch unit 1011 is provided. The touch unit 1011 is used to acquire the user's touch operation, determine the touch event type, touch event label and touch event coordinates based on the touch operation, and determine touch data based on the touch event type, the touch event label and the touch event coordinates.

[0058] It should be noted that the touch operation refers to the touch-related operations performed by the user on the display screen 101. By acquiring these operations, the touch event type, touch event label, and touch event coordinates can be determined. The touch event type refers to the type of touch operation, such as touch up, touch down, and touch move. The touch event label refers to the ID of the finger used for the touch, typically using 0 to 9 to encode the 10 fingers. The touch event coordinates refer to the coordinates corresponding to the touch sending position, usually with the upper left corner of the display screen 101 as the origin, the positive X-axis extending to the right, and the positive Y-axis extending downward. The touch data, that is, the information that can be obtained from the user's touch operation, is determined by the touch event type, touch event label, and touch event coordinates. When the touch unit 101 recognizes that the user is touching, it will notify the microcontroller 201 through a touch interrupt, that is, send a touch interrupt signal to the microcontroller 201 as described in this embodiment.

[0059] In a specific implementation, the touch unit 101 in the display screen 101 has a touch function and can notify the microcontroller 201 through touch interruption.

[0060] It is understood that the microcontroller 201 is used to read the touch data and parse the touch data when it receives the touch interrupt signal to determine whether it is necessary to interact with the front display screen. The microcontroller 201 is also used to generate a front interaction control signal based on the touch data when it is necessary to interact with the front display screen. The front interaction control signal includes a front interaction signal and a front control signal.

[0061] It should be understood that the front row interaction control signals refer to the relevant signals required for interaction with the front row display screen, including front row interaction signals and front row control signals. The front row interaction signals refer to interaction-related signals, which can be considered as relevant touch data. The front row control signals refer to control-related signals, which can be considered as CAN-related signals.

[0062] In the specific implementation, the microcontroller 201 reads and parses the touch data generated by the touch unit 1011 through the I2C interface to obtain the front-row interaction signal and the front-row control signal, and packages them and sends them to the video deserializer 202.

[0063] It should be noted that the video deserializer 202 is used to transmit the front row interactive control signal through the video serializer 301 to the control unit 302, so that the control unit 302 can parse the front row interactive control signal and output a response video signal to the video serializer 301. The video deserializer 202 is also used to parse the response video signal sent by the video serializer 301 to obtain a parsed video signal, and send the parsed video signal to the microcontroller 201. The microcontroller 201 is also used to convert and output the received parsed video signal to the display module 10 for display.

[0064] It is understandable that, since this embodiment adopts a main screen separation scheme, that is, the host 30 is set separately from the front display screen. The video serializer 30 and the control unit (SOC, system-on-a-chip) 302 corresponding to the front display screen are set on the host side. The control unit 302 can respond to the received front interactive signals.

[0065] It should be understood that the response video signal refers to the response of the front display screen to the interaction, and the parsed video signal refers to the signal data obtained by parsing the response video signal. Since the video deserializer 202 can parse the video differential signal output by the video serializer 301 of the front display screen, when the video deserializer 202 receives the response video signal sent by the video serializer 301, it will parse it and generate corresponding signal data. Usually, the parsed signal data is an LVDS video signal, which can be displayed on the display screen 101 after conversion.

[0066] In a specific implementation, the video deserializer 202 transmits the front-row interactive signals and front-row control signals packaged by the microcontroller 201 to the control unit 302 via the video serializer 301 of the front-row display screen. The control unit 302 then parses the signals and outputs the corresponding response video signals. The video serializer 301 of the front-row display screen transmits the response video signals to the video deserializer 202 for parsing, and then the microcontroller 201 converts the signals before finally displaying them on the display screen 101 in the display module 10.

[0067] It should be noted that the microcontroller 201 has a screen projection function and supports multiple video layers. It converts the received LVDS video signal and outputs it to the display screen 101. The video layer displayed on the screen is above all the display layers.

[0068] In this embodiment, the rear display device based on front-row interaction includes a display module 10 and an interaction module 20 connected together. The interaction module 20 is connected to the host 30. The interaction module 20 includes a microcontroller 201 and a video deserializer 202 connected together. The microcontroller 201 is connected to the display module 10. The host 30 is equipped with a video serializer 301 and a control unit 302 for the front-row display screen. The video serializer 301 is connected to the control unit 302, and the video deserializer 202 is connected to the video serializer 301. The display module 10 is used to send a touch interrupt signal to the microcontroller 201 when it receives a user's touch operation, and to generate touch data according to the touch operation. The microcontroller 201 is used to receive touch... When an interrupt signal is received, touch data is read and parsed. When interaction with the front display screen is required, a front interaction control signal is generated based on the touch data. The video deserializer 202 transmits the front interaction control signal through the video serializer 301 to the control unit 302, enabling the control unit 302 to parse the signal and output a response video signal to the video serializer 301. The video deserializer 202 also parses the response video signal sent by the video serializer 301 to obtain a parsed video signal, which is then sent to the microcontroller 201. The microcontroller 201 further converts and outputs the received parsed video signal to the display module 10 for display. Compared to traditional rear display screen control schemes, which are costly and cannot interact with the front display screen via touch, this embodiment, while retaining the basic functions of the rear display screen, adds a multi-screen interaction function. This allows for multi-screen interaction between the rear display screen and the front display screen via touch, and the implementation cost is low, meeting market demand.

[0069] refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a second embodiment of a rear-row display device based on front-row interaction according to the present invention.

[0070] Based on the first embodiment described above, the interaction module 20 further includes a forwarding unit 203, which is connected to the microcontroller 201.

[0071] It should be noted that the microcontroller 201 is also used to determine the interaction object when there is no need to interact with the front display screen, and generate an interaction control signal based on the touch data. The forwarding unit 203 is used to forward the interaction control signal to the interaction object for control interaction.

[0072] It is understood that the interaction object refers to the object that the current user needs to control and interact with. In this embodiment, the interaction object does not include the front display screen; it can be considered as any other control unit other than the front display screen. The interaction control signal is the signal data required for controlling and interacting with the interaction object, which is forwarded to the interaction object through the forwarding unit 203.

[0073] Furthermore, the forwarding unit 203 includes a control transceiver 2031 connected to a controller local area network bus 2032, and the control transceiver 2031 is connected to the microcontroller 201.

[0074] It should be understood that the control transceiver 2031 is used to forward the interactive control signal to the controller local area network bus 2032, and the controller local area network bus 2032 is used to send the interactive control signal to the interactive object.

[0075] It should be noted that the control transceiver 2031 mentioned in this embodiment refers to a CAN transceiver, and the controller local area network bus 2032 refers to a CAN bus. This embodiment ensures the interaction and control between the rear display device based on the front row interaction and other control units (excluding the front row display screen) by setting the control transceiver 2031 and the controller local area network bus 2032, thus guaranteeing basic functions.

[0076] Furthermore, the microcontroller 201 includes a built-in storage unit 2011 for storing software code and configuration data. The interaction module 20 also includes an external storage unit 204 connected to the microcontroller 201 for storing image data and font data.

[0077] It is understood that the built-in storage unit 2011 described in this embodiment is a built-in FLASH (flash memory), and the external storage unit 204 described in this embodiment is an EMMC (Embedded Multi Media Card) chip. The software code refers to the code data required to run the relevant software, the configuration data refers to the relevant configuration data, the image data refers to HMI image resource data, and the font data refers to HMI font resource data.

[0078] In its implementation, the microcontroller 201 uses an external eMMC chip to store HMI image resources and font data, while its built-in FLASH memory stores software code and configuration data, accelerating product startup time. Separating HMI resources from software code facilitates upgrades to both, enhancing system security and reliability.

[0079] In this embodiment, the interaction module 20 further includes a forwarding unit 203, which is connected to the microcontroller 201. The microcontroller 201 is also used to determine the interaction object when interaction with the front display screen is not required, and to generate an interaction control signal based on touch data. The forwarding unit 203 is used to forward the interaction control signal to the interaction object for control interaction. In this embodiment, the forwarding unit 203 can forward the interaction control signal to other control units for interaction, ensuring basic functions. The microcontroller 201 includes a built-in storage unit 2011, which is used to store software code and configuration data. The interaction module 20 also includes an external storage unit 204, which is connected to the microcontroller 201 and is used to store image data and font data. In this embodiment, HMI resources and software code are stored separately, which facilitates software code and resource data upgrades and improves system security and reliability.

[0080] This invention provides a method for controlling a rear-row display device based on front-row interaction, referring to... Figure 5 , Figure 5 This is a flowchart illustrating the first embodiment of a rear-row display device control method based on front-row interaction according to the present invention.

[0081] Based on the above embodiments, this embodiment of the rear-row display method based on front-row interaction includes the following steps:

[0082] Step S10: When the display module receives a user's touch operation, it sends a touch interrupt signal to the microcontroller and generates touch data based on the touch operation.

[0083] It should be noted that this embodiment applies to the aforementioned rear-row display device based on front-row interaction. The rear-row display device based on front-row interaction includes a connected display module and an interaction module. The interaction module is connected to a host computer and includes a connected microcontroller and a video deserializer. The microcontroller is connected to the display module. The host computer includes a video serializer and a control unit for the front-row display screen. The video serializer is connected to the control unit, and the video deserializer is connected to the video serializer. The execution entity in this embodiment is the rear-row display device based on front-row interaction, enabling direct interactive control with the front-row display screen.

[0084] Furthermore, generating touch data based on the touch operation includes: the display module determining the touch event type, touch event label, and touch event coordinates based on the touch operation; and the display module determining touch data based on the touch event type, the touch event label, and the touch event coordinates.

[0085] It is understood that the display device includes a touch-enabled display screen. The touch operation refers to the touch-related operation performed by the user on the display screen. By acquiring these operations, the touch event type, touch event label, and touch event coordinates can be determined. The touch event type refers to the type of touch operation, such as touchup, touch down, and touch move. The touch event label refers to the ID of the finger used for the touch, usually encoded using 0 to 9 for all 10 fingers. The touch event coordinates refer to the coordinates corresponding to the touch sending position, usually with the upper left corner of the display screen 101 as the origin, the positive X-axis extending to the right, and the positive Y-axis extending downward. The touch data, that is, the information that can be obtained from the user's touch operation, is determined by the touch event type, touch event label, and touch event coordinates.

[0086] It should be understood that when the display device detects that the user is touching, it will notify the microcontroller through a touch interruption, that is, send a touch interruption signal to the microcontroller as described in this embodiment.

[0087] Step S20: When the microcontroller receives the touch interrupt signal, it reads the touch data, parses the touch data, and determines whether it needs to interact with the front display screen.

[0088] It should be noted that traditional rear-row display screen control schemes cannot interact with the front-row display screen. However, since the rear-row display device based on front-row interaction has added a video deserializer, this embodiment can interact with the front-row display screen through the video deserializer. Therefore, before performing interactive control, it is necessary to first determine the current user's intention and whether the object to be interacted with is the front-row display screen, so as to select different interactive control methods.

[0089] Step S30: When the microcontroller needs to interact with the front display screen, it generates a front interaction control signal based on the touch data. The front interaction control signal includes a front interaction signal and a front control signal.

[0090] It is understood that the front row interaction control signals refer to the relevant signals required for interaction with the front row display screen, including front row interaction signals and front row control signals. The front row interaction signals refer to interaction-related signals, which can be considered as relevant touch data. The front row control signals refer to control-related signals, which can be considered as CAN-related signals.

[0091] In the specific implementation, the microcontroller reads and parses the touch data, and when it needs to interact with the front display screen, it generates front interaction signals and front control signals, packages them and sends them to the video deserializer.

[0092] Furthermore, the rear display device based on front-row interaction also includes a forwarding unit. After step S20, the device further includes: when the microcontroller does not need to interact with the front-row display screen, it determines the interaction object and generates an interaction control signal based on the touch data. The forwarding unit forwards the interaction control signal to the interaction object for control interaction.

[0093] It should be understood that the interaction object refers to the object that the current user needs to control and interact with. In this embodiment, the interaction object does not include the front display screen; it can be considered as any other control unit other than the front display screen. The interaction control signal is the signal data required for controlling and interacting with the interaction object, which is forwarded to the interaction object through the forwarding unit.

[0094] In practice, the microcontroller reads and parses the touch data. When there is no need to interact with the front display screen, it forwards the interaction control signal to the interaction object through the forwarding unit, so as to realize the interaction control with other control units (except the front display screen) and ensure basic functions.

[0095] Step S40: The video deserializer transmits the front row interactive control signal to the control unit through the video serializer, so that the control unit can parse the front row interactive control signal and output a response video signal to the video serializer.

[0096] It should be noted that the response video signal refers to the response of the front display screen to the interaction.

[0097] In practice, the video deserializer transmits the packaged front-row interactive signals and front-row control signals from the microcontroller to the control unit via the video serializer of the front-row display screen. The control unit of the front-row display screen then parses the signals and outputs the corresponding response video signals.

[0098] Step S50: The video deserializer parses the response video signal sent by the video serializer to obtain the parsed video signal, and sends the parsed video signal to the microcontroller.

[0099] It is understood that the video signal being analyzed refers to the signal data obtained by analyzing the response video signal. Since the video deserializer can analyze the video differential signal output by the video serializer of the front display screen, when the video deserializer receives the response video signal sent by the video serializer, it will analyze it and generate the corresponding signal data. Usually, the signal data obtained by analysis is an LVDS video signal.

[0100] Step S60: The microcontroller converts the received parsed video signal and outputs it to the display module for display.

[0101] In practice, the video serializer transmits the response video signal to the video deserializer for parsing, which is then converted by the microcontroller and finally displayed on the screen in the display module.

[0102] It should be noted that the microcontroller has a screen mirroring function and supports multiple video layers. It converts the received LVDS video signal and outputs it to the display screen. The video layer displayed on the screen is on top of all display layers.

[0103] like Figure 6 The diagram illustrates the front and rear row interaction process. When the microcontroller receives a touch interrupt from the touch screen, it reads the touch data, generates a row interaction signal and a front row control signal, packages them together, and sends them to the video deserializer. After passing through the video deserializer and the video serializer, the signal is transmitted to the control unit (SOC) for response. The corresponding response video is output to the video serializer, and then, after being parsed by the video deserializer and converted by the microcontroller, it is displayed on the screen, realizing the multi-screen interaction function.

[0104] In this embodiment, when the display module receives a user's touch operation, it sends a touch interrupt signal to the microcontroller and generates touch data based on the touch operation. Upon receiving the touch interrupt signal, the microcontroller reads and parses the touch data. When interaction with the front display screen is required, it generates a front interaction control signal based on the touch data. The video deserializer transmits the front interaction control signal through the video serializer to the control unit, enabling the control unit to parse the signal and output a response video signal to the video serializer. The video deserializer parses the response video signal sent by the video serializer to obtain a parsed video signal, which is then sent to the microcontroller. The microcontroller converts the received parsed video signal and outputs it to the display module for display. Compared to traditional rear display screen control schemes, which are costly and cannot interact with the front display screen via touch, this embodiment, while retaining the basic functions of the rear display screen, adds a multi-screen interaction function. This allows for multi-screen interaction between the rear display screen and the front display screen via touch, and the implementation cost is low, meeting market demand.

[0105] Furthermore, this embodiment of the invention also proposes a display device, which includes the aforementioned rear-row display device based on front-row interaction, and applies the steps of the aforementioned control method for the rear-row display device based on front-row interaction.

[0106] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solution 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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 rear-row display device based on front-row interaction, characterized in that, The rear display device based on front-row interaction includes a connected display module and an interaction module. The interaction module is connected to the host computer. The interaction module includes a connected microcontroller and a video deserializer. The microcontroller is connected to the display module. The host computer has a video serializer and a control unit for the front-row display screen. The video serializer is connected to the control unit, and the video deserializer is connected to the video serializer. The display module is used to send a touch interrupt signal to the microcontroller when it receives a user's touch operation, and to generate touch data based on the touch operation; The microcontroller is used to read the touch data and parse the touch data when it receives the touch interruption signal, and to determine whether it needs to interact with the front display screen. The microcontroller is also used to generate a front-row interaction control signal based on the touch data when interaction with the front-row display is required. The front-row interaction control signal includes a front-row interaction signal and a front-row control signal. The video deserializer is used to transmit the front row interactive control signal through the video serializer to the control unit, so that the control unit can parse the front row interactive control signal and output a response video signal to the video serializer; The video deserializer is also used to parse the response video signal sent by the video serializer to obtain a parsed video signal, and send the parsed video signal to the microcontroller; The microcontroller is also used to convert the received parsed video signal and output it to the display module for display.

2. The rear-row display device based on front-row interaction as described in claim 1, characterized in that, The interaction module also includes a forwarding unit, which is connected to the microcontroller; The microcontroller is also used to determine the interaction object and generate an interaction control signal based on the touch data when there is no need to interact with the front display screen. The forwarding unit is used to forward the interactive control signal to the interactive object for control interaction.

3. The rear-row display device based on front-row interaction as described in claim 2, characterized in that, The forwarding unit includes a control transceiver connected to a controller local area network bus, and the control transceiver is connected to the microcontroller; The control transceiver is used to forward the interactive control signals to the controller local area network bus; The controller local area network bus is used to send the interactive control signals to the interactive object.

4. The rear-row display device based on front-row interaction as described in claim 1, characterized in that, The display module includes a display screen, and the display screen is provided with a touch unit; The touch unit is used to acquire the user's touch operation, determine the touch event type, touch event label, and touch event coordinates based on the touch operation, and determine touch data based on the touch event type, the touch event label, and the touch event coordinates.

5. The rear-row display device based on front-row interaction as described in any one of claims 1 to 4, characterized in that, The microcontroller includes a built-in storage unit; The built-in storage unit is used to store software code and configuration data.

6. The rear-row display device based on front-row interaction as described in claim 5, characterized in that, The interaction module also includes an external storage unit, which is connected to the microcontroller. The external storage unit is used to store image data and font data.

7. A control method for a rear-row display device based on front-row interaction, applied to the rear-row display device based on front-row interaction as described in any one of claims 1 to 6, characterized in that, The rear display device control method based on front-row interaction includes: When the display module receives a user's touch operation, it sends a touch interrupt signal to the microcontroller and generates touch data based on the touch operation. When the microcontroller receives the touch interrupt signal, it reads the touch data, parses the touch data, and determines whether it needs to interact with the front display screen. When the microcontroller needs to interact with the front display screen, it generates a front interaction control signal based on the touch data. The front interaction control signal includes a front interaction signal and a front control signal. The video deserializer transmits the front-row interactive control signal through the video serializer to the control unit, so that the control unit can parse the front-row interactive control signal and output a response video signal to the video serializer; The video deserializer parses the response video signal sent by the video serializer to obtain a parsed video signal, and sends the parsed video signal to the microcontroller; The microcontroller converts the received parsed video signal and outputs it to the display module for display.

8. The control method as described in claim 7, characterized in that, The rear display device based on front-row interaction further includes a forwarding unit. When the microcontroller receives the touch interruption signal, it reads the touch data, parses the touch data, and determines whether interaction with the front display screen is needed. The device also includes: When the microcontroller does not need to interact with the front display screen, it determines the interaction object and generates an interaction control signal based on the touch data. The forwarding unit forwards the interaction control signal to the interaction object for control interaction.

9. The control method as described in claim 7 or 8, characterized in that, The step of generating touch data based on the touch operation includes: The display module determines the touch event type, touch event label, and touch event coordinates based on the touch operation; The display module determines the touch data based on the touch event type, the touch event label, and the touch event coordinates.

10. A display device, characterized in that, The display device includes the rear-row display device based on front-row interaction as described in any one of claims 1 to 6, and applies the steps of the rear-row display device control method based on front-row interaction as described in any one of claims 7 to 9.

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