A touch control method, device, equipment and medium of a display device

Abstract

The application discloses a touch control method, device and equipment of a display device and a medium, and relates to the field of touch interaction, and the method comprises the following steps: acquiring a touch event generated by a current frame of a user on a vehicle-mounted display screen, and determining a touch source of the touch event according to whether a preset electric field mark is carried in the touch event; an electric field sensor is arranged on a first side of the vehicle-mounted display screen, and the electric field sensor emits a preset electric field mark to the first side under the condition that a preset electric field signal is applied to the electric field sensor; according to the touch source, an interactive picture of the current frame is generated in a first display area and / or a second display area. The application can accurately identify and distinguish touch events of a main driver operator and a co-driver operator, realize double-picture display of the same vehicle-mounted touch screen, and support synchronous identification and response when the main driver operator and the co-driver operator touch simultaneously.

Description

Technical Field

[0001] This invention relates to the field of touch interaction, and more specifically to a touch control method, apparatus, device, and medium for a display device. Background Technology

[0002] With the development of automotive intelligence and cockpit digitalization, touchscreens have gradually replaced traditional physical buttons, becoming the primary human-machine interface (HMI) system in automobiles. Currently, in-vehicle touchscreens generally support single-point or multi-point touch, meeting the basic operational needs of a single user. In practical applications, however, in-vehicle touchscreens are increasingly showing a trend towards simultaneous interaction by multiple users.

[0003] Currently, dual-screen display technology is increasingly being applied in the field of automotive displays. This technology allows two different types of content to be displayed simultaneously on the same physical screen. For example, one side of the screen can display navigation information to the driver, while the other side can display entertainment content to the passengers, allowing the driver and passengers to independently access the information they need.

[0004] The core advantage of dual-screen display technology lies in its ability to use a single screen for two purposes. Through special optical structures or pixel arrangements, the same screen can display different content from different viewing angles. This technology makes full use of the limited space inside the vehicle, avoiding the increased hardware costs and installation space issues associated with configuring separate displays for the driver and passengers. However, the true value of dual-screen display technology lies not only in displaying two screens simultaneously, but also in its ability to support independent touch interaction between the two users on either side of the screen.

[0005] In driving scenarios that combine dual-screen display with touch interaction, it is necessary to accurately distinguish touch operations from different sides of the screen. The touch integrated circuit itself cannot actively determine whether the touch operation is initiated by the driver or the passenger. When the driver and passenger simultaneously generate touch events, the touch integrated circuit can only sense the occurrence of the touch event, but cannot identify the source of the touch event.

[0006] If a vehicle touchscreen based on dual-screen display technology only supports single-point or multi-point touch but cannot identify the source of the touch event, it may lead to misoperation, interaction conflicts, or confusion in human-machine logic, thus failing to meet the evolving interaction needs. Furthermore, for driving safety reasons, the automotive industry is increasingly tightening access controls for operators in different seats; some functions are only permitted to be operated by the driver, while entertainment or non-critical functions can be operated by the front passenger or rear passengers.

[0007] Therefore, how to effectively distinguish and recognize touch events generated simultaneously by the driver and passenger in the vehicle touchscreen is an important issue that needs to be addressed in current dual-screen display technology. Summary of the Invention

[0008] In view of this, embodiments of the present invention provide a touch control method, device, equipment and medium for a display device, thereby solving the problem that in-vehicle touch screens based on dual-screen display technology cannot identify the source of touch events when touch events occur simultaneously in the driver and passenger seats.

[0009] According to a first aspect, embodiments of the present invention provide a touch control method for a display device, the method comprising: The system acquires touch events generated by the user on the vehicle display screen in the current frame and determines the touch source of the touch event based on whether the touch event carries a preset electric field marker. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field marker towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field marker. Based on the source of the touch, generate the interactive screen of the current frame in the first display area and / or the second display area.

[0010] In conjunction with the first aspect, in the first embodiment of the first aspect, generating the interactive screen of the current frame in the first display area and / or the second display area according to the touch source specifically includes: If it is determined that the touch source of the current frame includes only the first operator, the first interactive screen of the current frame is generated in the first display area; the touch event generated by the first operator carries an electric field marker. If it is determined that the touch source in the current frame includes only the second operator, a second interactive screen is generated in the first display area; the touch event generated by the second operator does not carry an electric field marker. If it is determined that the touch source of the current frame includes both the first and second operators, a first interactive screen is generated in the first display area and a second interactive screen is generated in the second display area.

[0011] In conjunction with the first embodiment of the first aspect, in the second embodiment of the first aspect, the step of acquiring the touch event generated on the vehicle display screen in the current frame of the user, and determining the touch source of the touch event based on whether the touch event carries a preset electric field marker, specifically includes: Acquire at least one set of touch signals generated by the user on the in-vehicle display screen in the current frame; If a touch signal exceeds a preset touch threshold, the touch signal in the corresponding group will be marked as a touch event. If a touch signal is identified as a touch event, determine whether the touch signal in the corresponding group carries an electric field marker. If it is determined that the touch signal carries an electric field marker, the touch source corresponding to the touch event is identified as the first operator; If it is determined that the touch signal does not carry an electric field marker, the touch source corresponding to the touch event is identified as the second operator.

[0012] In conjunction with the first aspect, in the third embodiment of the first aspect, the electric field sensor includes a sensing loop; The sensing ring is positioned in the gap between the outer frame of the first display area and the flexible printed circuit board pressed onto the glass substrate.

[0013] In conjunction with the third embodiment of the first aspect, in the fourth embodiment of the first aspect, the induction ring is electrically connected to the sine wave generating circuit, the sine wave generating circuit is used to output a sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V, the electric field signal is a sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V, and the electric field marker is a sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V.

[0014] In conjunction with the first aspect, in the fifth embodiment of the first aspect, the electric field sensor includes an emitter and a collector; Both the emitter and the collector are located in the gap between the outer frame of the first display area and the flexible printed circuit board pressed onto the glass substrate.

[0015] In conjunction with the fifth embodiment of the first aspect, in the sixth embodiment of the first aspect, the emitter is electrically connected to the output terminal of the negative high voltage generator, the collector is electrically connected to the ground terminal, a corona current loop is formed between the collector and the emitter, the negative high voltage generator is used to output a negative high voltage DC power of -8kV, the electric field signal is a negative high voltage DC signal of -8kV, and the electric field is labeled as a corona field.

[0016] According to a second aspect, embodiments of the present invention also provide a touch control device for a display device, the device comprising: The touch sensing module is used to acquire touch events generated by the user on the vehicle display screen in the current frame, and determine the touch source of the touch event based on whether the touch event carries a preset electric field mark. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field mark towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field mark. The touch control module is used to generate the interactive screen of the current frame in the first display area and / or the second display area according to the touch source.

[0017] According to a third aspect, embodiments of the present invention also provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the touch control method of any of the above-described display devices.

[0018] According to a fourth aspect, embodiments of the present invention also provide a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the touch control method of any of the above-described display devices.

[0019] The touch control method, apparatus, device, and medium of the present invention provide a display device in which a first display area and a second display area are spliced ​​together on the same vehicle display screen. An electric field sensor is set on the first side where the first display area is located. When a preset electric field signal is applied to the electric field sensor, the electric field sensor will emit a preset electric field mark to the first side. In this way, when the user at the driver's or passenger's seat in the vehicle environment generates a touch event, the electric field of one user will couple with the electric field mark. The rapid spatial attenuation of the electric field achieves natural anti-interference for the user on the other side. Based on whether the touch event carries an electric field mark, the touch events of the driver and passenger can be accurately identified and distinguished, and the touch source can be identified and distinguished. Finally, based on the touch source of the current frame, an interactive screen is generated in the first display area and / or the second display area, realizing dual-screen display on the same vehicle touch screen. It also supports synchronous recognition and response when the driver and passenger touch simultaneously, without requiring any additional user operations such as pressing a button or wearing special equipment, which significantly improves the user's interactive experience. Attached Figure Description

[0020] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings: Figure 1 A flowchart illustrating the touch control method for the display device provided by the present invention is shown; Figure 2 A schematic diagram is shown in which the electric field sensor adopts an induction loop in the touch control method of the display device provided by the present invention; Figure 3 One of the time-domain diagrams of the touch signals corresponding to the first and second operators in the touch control method of the display device provided by the present invention is shown. Figure 4 This illustration shows one of the schematic diagrams illustrating the interaction between a first and second operator and an in-vehicle display screen in the touch control method of the display device provided by the present invention; Figure 5 This is one of the schematic diagrams showing the first and second operators interacting simultaneously with the vehicle display screen in the touch control method of the display device provided by the present invention; Figure 6 A schematic diagram is shown in which the electric field sensor in the touch control method of the display device provided by the present invention uses an emitter and a collector. Figure 7 A schematic diagram of the corona field generated near the emitter tip in the touch control method of the display device provided by the present invention is shown; Figure 8 The second time-domain diagram of the touch signals corresponding to the first and second operators in the touch control method of the display device provided by the present invention is shown. Figure 9 This is a second schematic diagram showing the interaction between the first and second operators and the vehicle display screen in the touch control method of the display device provided by the present invention; Figure 10 This is a second schematic diagram showing the interaction between the first and second operators with the vehicle display screen simultaneously in the touch control method of the display device provided by the present invention. Figure 11 A schematic diagram of the structure of the touch control device of the display device provided by the present invention is shown; Figure 12 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application.

[0021] In the diagram: 100 - vehicle display screen; 200 - gap; 300 - sensing ring; 400 - emitter; 500 - collector; 600 - first operator; 700 - second operator. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] With the development of automotive intelligence and cockpit digitalization, touchscreens have gradually replaced traditional physical buttons, becoming the primary human-machine interface in automotive HMI systems. As the core interface for human-machine interaction, the functionality and performance of the in-vehicle touchscreen directly impact the user experience for both drivers and passengers. Currently, dual-screen display technology is increasingly being applied in the in-vehicle display field. This technology allows two different types of content to be displayed simultaneously on the same physical screen. For example, one side of the screen can display navigation information to the driver, while the other side can display entertainment content to the front passenger, enabling both the driver and passenger to independently access the information they need.

[0024] Currently, most in-vehicle touchscreens support single-point or multi-point touch, meeting the basic operational needs of a single user. In practical applications, in-vehicle touchscreens are increasingly showing a trend towards simultaneous multi-user interaction. For example, the driver and front passenger can operate the same in-vehicle touchscreen simultaneously; the driver can adjust vehicle settings while the passenger operates entertainment functions; or different screens can be displayed on the same touchscreen, allowing the driver and passenger to operate it simultaneously and respond to each other's touch events.

[0025] The core advantage of dual-screen display technology lies in its ability to use a single screen for two purposes. Through special optical structures or pixel arrangements, the same screen can display different content from different viewing angles. This technology makes full use of the limited space inside the vehicle, avoiding the increased hardware costs and installation space issues associated with configuring separate displays for the driver and passengers. However, the true value of dual-screen display technology lies not only in displaying two screens simultaneously, but also in its ability to support independent touch interaction between the two users on either side of the screen.

[0026] If a vehicle touchscreen based on dual-screen display technology only supports single-point or multi-point touch but cannot identify the source of the touch event, it may lead to misoperation, interaction conflicts, or confusion in human-machine logic, thus failing to meet the evolving interaction needs. In other words, in driving scenarios combining dual-screen display and touch interaction, it is necessary to accurately distinguish touch operations from different sides of the screen. Since the dual-screen display is physically a single, complete touch panel, when the driver touches the driver-side area of ​​the screen, the touch integrated circuit can detect the occurrence of the touch event and its coordinates on the screen; similarly, when a passenger touches the passenger-side area, the touch integrated circuit can also detect the corresponding touch event. However, the touch integrated circuit itself cannot actively determine whether the touch operation was initiated by the driver or the passenger. When both the driver and passenger simultaneously generate touch events, the touch integrated circuit can only sense the occurrence of the touch event but cannot identify its source. In specific driving scenarios, it is essential to be able to identify the source of the touch event to distinguish the input behavior of different operators and improve driving safety. In addition, for driving safety reasons, the automotive industry is increasingly tightening its control over the permissions of operators in different seats. Some functions can only be operated by the driver, while entertainment or non-critical functions can be operated by the front passenger or rear passengers.

[0027] To identify the source of touch events, one solution is to use an infrared sensor array. Infrared emitters and receivers are positioned on either side of the in-vehicle touchscreen, respectively. The source of the touch event is inferred by detecting where the infrared light path is blocked during a touch operation. However, using infrared sensors increases the system's hardware complexity and manufacturing cost. The infrared light path is also susceptible to ambient light interference, potentially leading to misjudgments under strong light conditions. Furthermore, infrared sensors need to operate continuously to monitor touch operations in real time, making effective sleep control difficult and resulting in high system power consumption. More importantly, when the driver and passenger simultaneously touch the in-vehicle display screen from the driver's and passenger's seats respectively, the infrared sensor solution struggles to distinguish the source of the touch events from the driver's and passenger's seats.

[0028] Another solution is to add one or more physical buttons to the in-vehicle touchscreen to distinguish the source of touch events from the driver and passenger sides. When the physical button on the driver's side is activated, the in-vehicle touchscreen only responds to touch events from that side; when the physical button on the passenger's side is activated, the in-vehicle touchscreen only responds to touch events from that side; when both physical buttons on the driver and passenger sides are activated simultaneously, the user's action from the side with the higher priority is recognized by default. However, this passive judgment solution complicates user operation, results in a poor user experience, and does not support the requirement for simultaneous recognition of dual screens and dual touches.

[0029] In conclusion, how to effectively distinguish and recognize touch events generated simultaneously by the driver and passenger in an in-vehicle touchscreen is a crucial issue that dual-screen display technology urgently needs to address.

[0030] To address the aforementioned issues, this specification provides a touch control method for a display device, designed to accurately identify and differentiate touch events from those of the driver and passenger, enabling dual-screen display on the same in-vehicle touchscreen and supporting simultaneous identification and response when the driver and passenger simultaneously perform touch operations. Figure 1 This is a flowchart illustrating a touch control method for a display device according to an embodiment of the present invention, as shown below. Figure 1 As shown, the method may include the following steps: S101. Obtain the touch event generated by the user in the current frame on the vehicle display screen, and determine the touch source of the touch event based on whether the touch event carries a preset electric field mark.

[0031] In this embodiment, the vehicle-mounted display screen includes a first display area and a second display area spliced ​​together, which physically form a complete touch panel. The first display area is located on a first side of the vehicle-mounted display screen, and the second display area is located on a second side. Thus, the first and second display areas are respectively located on both sides of the vehicle-mounted display screen. An electric field sensor is located on the first side of the vehicle-mounted display screen. When a preset electric field signal is applied to the electric field sensor, the sensor emits a preset electric field marker towards the first side. When a first operator approaches and touches the vehicle-mounted display screen from the first side, the touch event generated by the first operator on the vehicle-mounted display screen carries the electric field marker. When a second operator approaches and touches the vehicle-mounted display screen from the second side, the touch event generated by the second operator on the vehicle-mounted display screen does not carry the electric field marker.

[0032] That is, when a user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field marker, while when a user approaches and touches the vehicle display screen from the second side, the touch event generated by the user on the vehicle display screen does not carry an electric field marker.

[0033] The first display area can be near the driver's side, and correspondingly, the second display area can be near the passenger side. Alternatively, the first display area can be near the passenger side, and the second display area can be near the driver's side. In one of the first and second display areas, the area near the driver's side is positioned, and the other display area is near the passenger side. That is, the first display area is located on one side of the vehicle display screen, and the second display area is located on the other side, with these two sides corresponding to the driver's and passenger's areas respectively.

[0034] When the first display area is the area closer to the driver's seat, the first side is the side closer to the driver's seat, and the second side is the side closer to the passenger's seat; when the first display area is the area closer to the passenger's seat, the first side is the side closer to the passenger's seat, and the second side is the side closer to the driver's seat.

[0035] Accordingly, based on the vehicle environment, driver and passenger layout, and human body structure, when the first display area is near the driver's seat, the first operator who approaches and touches the vehicle display screen from the first side is the driver of the vehicle, and the second operator who approaches and touches the vehicle display screen from the second side is the passenger of the passenger seat; when the first display area is near the passenger seat, the first operator who approaches and touches the vehicle display screen from the first side is the passenger of the passenger seat, and the second operator who approaches and touches the vehicle display screen from the second side is the driver of the vehicle.

[0036] In this way, the source of the touch event can be determined by whether the touch event carries a preset electric field marker. That is, it can be determined that the touch event generated in the current frame originates from the first side and / or the second side, which means that the touch event generated in the current frame originates from the user at the driver's seat and / or the user at the passenger seat.

[0037] In this embodiment, the electric field sensor is located on one side of the vehicle display screen, which is either the driver's or passenger's side. When a user is in the vehicle environment, the distance between the driver / passenger and the electric field sensor differs. When a user closer to the electric field sensor wants to interact with the touchscreen, their hand touching the display screen is extremely close to the electric field marker emitted by the sensor into the space on the first side. This causes the electric field marker to couple to the user's hand, and the touch event generated by touching the display screen with their fingers will carry the electric field marker. Conversely, when a user farther from the electric field sensor wants to interact with the display screen, their hand is farther from the electric field marker, and the relative area is smaller. The electric field marker is less likely to couple to the user's hand, and the touch event generated by touching the display screen with their fingers will not carry the electric field marker.

[0038] It can be seen that by setting an electric field sensor on the first side of the vehicle display screen, the electric fields of the first operator on the first side and the second operator on the second side are different when they touch the vehicle display screen. The resulting touch signal may or may not carry an electric field mark. Therefore, based on whether the touch event carries an electric field mark, it is possible to actively identify and distinguish whether the user corresponding to the touch event is located at the driver's seat or the passenger's seat.

[0039] Meanwhile, unlike passive identification and differentiation of touch sources, this active differentiation solution, by placing an electric field sensor on the first side of the vehicle display screen, eliminates the need for the operator to perform any prior actions to passively identify the specific location. Instead, it changes the user's own electric field at a certain location. This active differentiation solution can display two different images on the same vehicle touch screen without the user noticing, and meets the requirement of simultaneous response, making it suitable for complex driving scenarios.

[0040] In this embodiment, the first display area and the second display area are not limited to being exactly the same interactive area. The two display areas can be set to the same interactive area, or one interactive area can be larger and the other interactive area can be smaller.

[0041] S102. Generate an interactive screen in the first display area and / or the second display area based on the touch source of the current frame.

[0042] In this embodiment, the touch chip for detecting touch signals and determining touch events can actively determine the source of the touch based on whether the touch signal corresponding to the touch event carries an electric field marker. This allows for the identification and differentiation of touch events generated by the driver and passenger through different touch signal feedback. Furthermore, because it can identify and differentiate touch events generated by the driver and passenger, even if both the first and second operators want to interact with the vehicle's display screen at the same time, the first interactive screen shown to the first operator and the second interactive screen shown to the second operator can still be displayed respectively in the first display area and the second display area.

[0043] The touch control method of the display device of the present invention sets up a first display area and a second display area spliced ​​together in the same vehicle display screen, and sets up an electric field sensor on the first side where the first display area is located. When a preset electric field signal is applied to the electric field sensor, the electric field sensor will emit a preset electric field mark to the first side. In this way, when the user at the driver's and passenger's seats in the vehicle environment generates a touch event, the electric field of one user will couple with the electric field mark. The rapid spatial attenuation of the electric field achieves natural anti-interference for the other user. Based on whether the touch event carries an electric field mark, the touch events of the driver's and passenger's operators can be accurately identified and distinguished, and the touch source can be identified and distinguished. Finally, based on the touch source of the current frame, an interactive screen is generated in the first display area and / or the second display area, realizing dual-screen display of the same vehicle touch screen, and supporting synchronous recognition and response when the driver's and passenger's operators touch at the same time. No additional operation by the user is required, such as operating a button or wearing special equipment, which significantly improves the user's interactive experience.

[0044] In this embodiment of the application, step S101 specifically includes: S1011. Obtain at least one set of touch signals generated by the user on the vehicle display screen in the current frame.

[0045] When a user on either the driver's or passenger's side touches at least one touch point on the vehicle's display screen, the current frame generates one set of touch signals. When both the driver's and passenger's side users touch at least one touch point on the vehicle's display screen, the current frame generates two sets of touch signals, with the driver's side user touching at least one touch point and the passenger's side user also touching at least one touch point.

[0046] Specifically, touch signals are generated based on multiple touch points only when the touch chip supports multi-touch recognition.

[0047] S1012. If it is determined that the touch signal exceeds the preset touch threshold, the touch signal of the corresponding group is marked as a touch event.

[0048] Taking the self-capacitance detection method of an in-vehicle display screen as an example, when the user does not touch the in-vehicle display screen, the voltage value of each capacitor node in the in-vehicle display screen will not change significantly. When the user touches any point on the in-vehicle display screen, that is, the introduction of the capacitance of the human hand will cause the charge of the capacitor node corresponding to the touch point to redistribute, which will affect the voltage value of the corresponding capacitor node. The touch chip can deduce the coupling capacitance formed between the human body and the capacitor node by reading the voltage change value. When the voltage change value exceeds the preset threshold, the touch chip based on self-capacitance detection will mark the touch signal as a touch event, which can effectively avoid invalid touch interaction.

[0049] S1013. If the touch signal is identified as a touch event, identify whether the touch signal of the corresponding group carries an electric field marker.

[0050] Only when a touch signal is marked as a touch event, that is, when the touch chip senses a valid touch event, will a secondary judgment be made based on whether the touch signal carries an electric field marker, in order to identify and distinguish the touch source of the touch event.

[0051] S1014. If it is determined that the touch signal carries an electric field marker, the touch source corresponding to the touch event is identified as the first operator. The touch event generated by the first operator carries an electric field marker.

[0052] S1015. If it is determined that the touch signal does not carry an electric field marker, the touch source corresponding to the touch event is identified as the second operator. Wherein, the touch event generated by the second operator does not carry an electric field marker.

[0053] It should be noted that when there are two sets of touch events in the current frame, the touch sources corresponding to these two sets of touch events can be determined through the processing of steps S1014 and S1015, that is, which set of touch events corresponds to the first operator on the first side and which set of touch events corresponds to the second operator on the second side.

[0054] By setting an electric field sensor on the first side and sequentially completing the acquisition of touch signals, the perception of touch events, the identification and differentiation of touch sources, the source label can be directly added to the touch event without changing the screen display structure. This enables true dual-person parallel touch interaction without interruption. Users no longer need to press or touch a fixed area to identify which side the operator is before touching the vehicle display screen, and there is no need for alternating operation, high priority response, low priority no response, etc., reducing the user's interaction waiting time.

[0055] Meanwhile, after processing through steps S1011 to S1015, the touch chip can complete the above-mentioned processing logic for all touch points in the entire vehicle display screen within tens of milliseconds. The touch action generated by the user's fingers usually takes hundreds of milliseconds. Therefore, it can complete the acquisition of touch signals, the perception of touch events, the identification and differentiation of touch sources under the condition that the human body is unaware and no additional human action is required.

[0056] In this embodiment of the application, step S102 specifically includes: S1021. If it is determined that the touch source of the current frame only includes the first operator, generate the first interactive screen of the current frame in the first display area.

[0057] S1022. If it is determined that the touch source of the current frame only includes the second operator, a second interactive screen is generated in the first display area.

[0058] S1023. If it is determined that the touch source of the current frame includes the first and second operators, a first interactive screen is generated in the first display area and a second interactive screen is generated in the second display area.

[0059] Based on the touch source corresponding to the touch event effectively perceived in the current frame, the first and / or second interactive screens are generated in the first and / or second display areas to meet the needs of the driver and passenger to interact with the vehicle display screen independently or simultaneously.

[0060] Let's take the side closest to the driver as an example. Assume that in the current frame, only the first operator triggers a touch event, and a first interactive screen is generated in the first display area closest to the driver. The first operator, i.e., the driver, sees the first interactive screen displayed in the first display area. Assume that in the current frame, only the second operator triggers a touch event, and a second interactive screen is generated in the second display area closest to the passenger. The second operator, i.e., the passenger, sees the second interactive screen displayed in the second display area. Assume that in the current frame, both the first and second operators trigger touch events, and respectively, a first interactive screen is generated in the first display area and a second interactive screen is generated in the second display area. From the driver's perspective, the first interactive screen is displayed in the first display area; from the second operator's perspective, the second interactive screen is displayed in the second display area. This allows the system to actively distinguish between the two operators simultaneously on the same in-vehicle display screen, enabling simultaneous operation and response to both screens. For example, the driver might see a navigation screen while the passenger sees an audio-visual screen. When both drivers operate the screen simultaneously, the driver can operate the navigation screen while the passenger can simultaneously operate the audio-visual screen. This interaction method safely, reliably, and accurately identifies the source of touch and responds to the corresponding operator's actions.

[0061] like Figure 2 As shown in the embodiment of this application, the electric field sensor includes a sensing ring 300, and the sensing ring 300 is disposed in the gap 200 between the outer frame of the first display area and the flexible printed circuit board (FPC on Glass, FOG) pressed on the glass substrate. For a rectangular vehicle display screen, the outer frame of the first display area includes three sides. The sensing ring 300 can be disposed in the gap 200 between some of the sides and the FOG, or it can be disposed in the gap 200 between each side and the FOG.

[0062] With this setup, the first operator will inevitably cross the sensing ring 300 when they approach and touch the vehicle display screen.

[0063] The sensing ring 300 can be made of metal. One end of the sensing ring 300 is electrically connected to the sine wave generating circuit on the printed circuit board via a connecting wire harness. The body of the sensing ring 300 and the other end are embedded in the gap 200. The sine wave generating circuit is used to output a sine wave signal with a frequency between 40-60KHz (50KHz±10KHz) and a peak-to-peak value between 5-15V (10Vpp±5Vpp). This sine wave signal is the preset electric field signal. When the above electric field signal is applied to the electric field sensor, the electric field sensor will emit an electric field mark to the first side. The corresponding electric field mark is a sine wave electric field with a frequency between 40-60KHz and a peak-to-peak value between 5-15V.

[0064] Considering the need to ensure that the first operator's hand can couple to the sinusoidal electric field mark, while the second operator's hand cannot, the sensing ring 300 is a short-range sensing ring. That is, the sensing ring 300 needs to generate a sinusoidal electric field mark around itself, but there is no requirement for high current, high power, or hardness. Therefore, the metal material of the sensing ring 300 used for short-range sensing can be flexibly designed and adjusted according to cost and the size of the vehicle display screen. For example, the sensing ring 300 can be made of copper, copper-plated, aluminum alloy, stainless steel, etc., and set as a strip.

[0065] The length and width of the sensing ring 300 determine the intensity of the electric field marker in the form of a sinusoidal electric field. When the user's hand touches the first or second display area across the edge of the vehicle display screen, the distance between the user's hand and the sensing ring 300 is in the centimeter (cm) range. Accordingly, the width of the sensing ring 300 can be set in the millimeter (mm) range, and the length is set according to the size of the vehicle display screen.

[0066] In this way, the electric field sensor based on the induction ring 300 will generate a weak but stable sine wave signal in the local area around it, that is, generate an AC near-field electric field. The sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V has been medically verified to be harmless to the human body.

[0067] Please see Figures 3 to 5 , Figure 3 The horizontal axis represents time (μs), and the vertical axis represents voltage (V). Figure 3The blue lines represent touch signals carrying electric field markers, while the red lines represent touch signals without electric field markers. According to the formula for external electric fields, the electric field strength decreases rapidly with increasing distance. The closer the first operator's hand is to the electric field marker, the stronger the electric field; the farther away, the weaker the electric field. When the first operator's finger touches the screen, the distance to the sensing ring 300 is only a few centimeters. This distance is much smaller than half the wavelength of an electromagnetic wave, falling within the near-field region. In the near-field region, energy is primarily transferred in the form of an electric field, rather than electromagnetic radiation. The electric field strength sensed on the surface of the first operator's hand is approximately 30-70% of the electric field near the sensing ring 300, allowing the electric field marker to couple to the first operator's hand.

[0068] Conversely, since the second operator 700's hand is far from the sensing ring 300, the electric field sensed by the distant second operator 700's hand is almost negligible due to the rapid decay of the electric field with distance.

[0069] It should be noted that, in this embodiment of the application, the touch point for the first operator 600 to interact with the vehicle display screen can be point A located in the first display area or point D located in the second display area. The first operator 600 is not limited to completing the interaction through the first display area. Similarly, the touch point for the second operator 700 to interact with the vehicle display screen can be point C located in the first display area or point B located in the second display area. The second operator 700 is not limited to completing the interaction through the second display area.

[0070] like Figure 6 As shown in the embodiment of this application, the electric field sensor includes an emitter 400 and a collector 500, and both the emitter 400 and the collector 500 are disposed in the gap 200 between the outer frame of the first display area and the FOG. For a rectangular vehicle display screen, the outer frame of the first display area includes three sides. The emitter 400 and the collector 500 can be disposed in the gap 200 between some of the sides and the FOG, or they can be disposed in the gap 200 between each side and the FOG.

[0071] With this setup, when the first operator approaches and touches the vehicle display screen, they will inevitably cross the emitter 400 and the collector 500.

[0072] Both the emitter 400 and the collector 500 are electrically connected at one end to the output of a negative high-voltage generator on a printed circuit board via connecting wires. The bodies of both the emitter 400 and the collector 500, as well as their other ends, are embedded within a gap 200. The emitter 400 is at a high potential, while the collector 500 is at a low potential or serves as a signal reference. The emitter 400 typically uses a finer wire diameter to create a sharper tip structure, allowing it to achieve a corona initiation field strength at a lower voltage and generate a stable corona field. The collector 500 typically has a relatively smooth, blunt conductor surface with a large radius of curvature to avoid corona discharge and focus on ion collection and electric field shaping.

[0073] The emitter 400 and collector 500 can also be made of metal. For example... Figure 7 As shown in this embodiment, the negative high-voltage generator receives low-voltage DC power, converts it into high-frequency AC power via an oscillator, boosts it through a transformer, and finally outputs a negative high-voltage DC power of -8kV to the emitter 400 after processing by a rectifier. Electrons are continuously released near the tip of the emitter 400, forming a corona ion flow. The emitter 400 has a very small radius of curvature at its tip, resulting in an extremely high electric field strength nearby. When the electric field strength exceeds the breakdown threshold, gas molecules near the tip are ionized, forming a stable corona field. A corona current loop is formed between the collector 500 and the emitter 400, maintaining the electric field distribution. In touch detection scenarios, this also serves to stabilize the electric field reference, allowing the touch chip to recognize changes in electric field coupling when a hand approaches.

[0074] Similarly, considering the need to ensure that the first operator's hand can couple to the corona field mark, while the second operator's hand cannot, the emitter 400 and collector 500 are close-range sawtooth-shaped sensing rings. That is, the emitter 400 needs to generate a corona field mark around it, but there is no need for high current, high power, or hardness. Therefore, the metal material of the emitter 400 and collector 500 used for close-range sensing can be flexibly designed and adjusted according to cost and the size of the vehicle display screen. For example, the emitter 400 and collector 500 can be made of copper, copper-plated, aluminum alloy, stainless steel, etc., and both are set as strips.

[0075] The voltage value of the negative high-voltage direct current and the radius of curvature of the tip of the emitter 400 determine the intensity of the electric field marking in the form of a corona field. Furthermore, when the user's hand touches the first or second display area across the edge of the vehicle display screen, the distance between the user's hand and the emitter 400 is on the order of centimeters (cm). Correspondingly, the width of the emitter 400 can be set on the order of millimeters (mm), while the length is set according to the size of the vehicle display screen.

[0076] Please see Figures 8 to 10 , Figure 8 The horizontal axis represents time (μs), and the vertical axis represents voltage (V). Figure 8 The blue lines represent touch signals carrying electric field markers, while the red lines represent touch signals without electric field markers. The closer the first operator's hand is to the electric field marker, the stronger the electric field; the farther the first operator's hand is from the electric field marker, the weaker the electric field. When the first operator's hand touches the screen, it is only a few centimeters away from the emitter 400, which is the near-field region. The electric field intensity sensed on the surface of the first operator's hand is approximately 30-70% of the electric field near the emitter 400, thus allowing the electric field marker to couple to the first operator's hand.

[0077] Conversely, since the second operator 700's hand is far from the sensing ring 300, the electric field sensed by the distant second operator 700's hand is almost negligible.

[0078] Unlike the electric field sensor which uses an induction loop 300, the touch chip can determine whether it carries an electric field marker in the form of a corona field by collecting the corresponding positive AC signal.

[0079] It should also be noted that, in this embodiment of the application, the touch point for the first operator 600 to interact with the vehicle display screen can be point A located in the first display area or point D located in the second display area. The first operator 600 is not limited to completing the interaction through the first display area. Similarly, the touch point for the second operator 700 to interact with the vehicle display screen can be point C located in the first display area or point B located in the second display area. The second operator 700 is not limited to completing the interaction through the second display area.

[0080] The touch control device of the display device provided in the embodiments of the present invention will be described below. The touch control device of the display device described below can be referred to in correspondence with the touch control method of the display device described above.

[0081] To address the aforementioned issues, this specification provides a touch control device for a display device, designed to accurately identify and distinguish touch events from those of the driver and passenger, enabling dual-screen display on the same in-vehicle touchscreen and supporting simultaneous identification and response when the driver and passenger touch the screen simultaneously. Figure 11 This is a schematic diagram of the structure of a touch control device for a display device according to an embodiment of the present invention, such as... Figure 11 As shown, the device may include: The touch sensing module 10 is used to acquire touch events generated by the user on the vehicle display screen in the current frame, and determine the touch source of the touch event based on whether the touch event carries a preset electric field mark.

[0082] In this embodiment, the vehicle-mounted display screen includes a first display area and a second display area spliced ​​together, which physically form a complete touch panel. The first display area is located on a first side of the vehicle-mounted display screen, and the second display area is located on a second side. Thus, the first and second display areas are respectively located on both sides of the vehicle-mounted display screen. An electric field sensor is located on the first side of the vehicle-mounted display screen. When a preset electric field signal is applied to the electric field sensor, the sensor emits a preset electric field marker towards the first side. When a first operator approaches and touches the vehicle-mounted display screen from the first side, the touch event generated by the first operator on the vehicle-mounted display screen carries the electric field marker. When a second operator approaches and touches the vehicle-mounted display screen from the second side, the touch event generated by the second operator on the vehicle-mounted display screen does not carry the electric field marker.

[0083] The touch control module 20 is used to generate an interactive screen in the first display area and / or the second display area based on the touch source of the current frame.

[0084] In this embodiment, the touch signal used to detect touch signals and determine touch events can actively determine the corresponding touch source based on whether the touch signal corresponding to the touch event carries an electric field marker. Thus, touch events generated by the driver and passenger can be identified and distinguished through different touch signal feedback. Furthermore, because touch events generated by the driver and passenger can be identified and distinguished, even if both the first and second operators want to interact with the vehicle display screen at the same time, the first interactive screen shown to the first operator and the second interactive screen shown to the second operator can still be displayed respectively in the first display area and the second display area.

[0085] The touch control device of the present invention comprises a first display area and a second display area spliced ​​together on the same vehicle display screen. An electric field sensor is set on the first side of the first display area. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field mark to the first side. In this way, when a user in the driver's or passenger's seat touches the screen in the vehicle environment, the electric field of one user will couple with the electric field mark. The rapid spatial attenuation of the electric field enables the other user to naturally resist interference. Based on whether the touch event carries an electric field mark, the touch events of the driver and passenger can be accurately identified and distinguished, and the touch source can be identified and distinguished. Finally, based on the touch source of the current frame, an interactive screen is generated in the first display area and / or the second display area, realizing dual-screen display on the same vehicle touch screen. It also supports synchronous recognition and response when the driver and passenger touch the screen simultaneously, without requiring any additional user operations such as pressing a button or wearing special equipment, thus significantly improving the user's interactive experience.

[0086] Figure 12 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 12 As shown, the electronic device may include: a processor 1210, a communication interface 1220, a memory 1230, and a communication bus 1240, wherein the processor 1210, the communication interface 1220, and the memory 1230 communicate with each other via the communication bus 1240. The processor 1210 can call logical commands in the memory 1230 to execute a touch control method for the display device, the method including: The system acquires touch events generated by the user on the vehicle display screen in the current frame and determines the touch source of the touch event based on whether the touch event carries a preset electric field marker. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field marker towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field marker. Based on the source of the touch, generate the interactive screen of the current frame in the first display area and / or the second display area.

[0087] Furthermore, the logical instructions in the aforementioned memory 1230 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0088] On the other hand, the present invention also provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, wherein when the program instructions are executed by a computer, the computer is able to execute the touch control method of the display device provided by the above methods, the method comprising: The system acquires touch events generated by the user on the vehicle display screen in the current frame and determines the touch source of the touch event based on whether the touch event carries a preset electric field marker. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field marker towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field marker. Based on the source of the touch, generate the interactive screen of the current frame in the first display area and / or the second display area.

[0089] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the touch control methods for executing the aforementioned display devices, the method comprising: The system acquires touch events generated by the user on the vehicle display screen in the current frame and determines the touch source of the touch event based on whether the touch event carries a preset electric field marker. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field marker towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field marker. Based on the source of the touch, generate the interactive screen of the current frame in the first display area and / or the second display area.

[0090] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0091] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A touch control method for a display device, characterized in that, The method includes: The system acquires touch events generated by the user on the vehicle display screen in the current frame and determines the touch source of the touch event based on whether the touch event carries a preset electric field marker. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field marker towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field marker. Based on the source of the touch, generate the interactive screen of the current frame in the first display area and / or the second display area.

2. The touch control method for the display device according to claim 1, characterized in that, The step of generating the interactive screen of the current frame in the first display area and / or the second display area based on the touch source specifically includes: If it is determined that the touch source of the current frame includes only the first operator, the first interactive screen of the current frame is generated in the first display area; the touch event generated by the first operator carries an electric field marker. If it is determined that the touch source in the current frame includes only the second operator, a second interactive screen is generated in the first display area; the touch event generated by the second operator does not carry an electric field marker. If it is determined that the touch source of the current frame includes both the first and second operators, a first interactive screen is generated in the first display area and a second interactive screen is generated in the second display area.

3. The touch control method for the display device according to claim 2, characterized in that, The process of acquiring touch events generated on the vehicle display screen in the current user frame and determining the touch source of the touch event based on whether the touch event carries a preset electric field marker specifically includes: Acquire at least one set of touch signals generated by the user on the in-vehicle display screen in the current frame; If a touch signal exceeds a preset touch threshold, the touch signal in the corresponding group will be marked as a touch event. If a touch signal is identified as a touch event, determine whether the touch signal in the corresponding group carries an electric field marker. If it is determined that the touch signal carries an electric field marker, the touch source corresponding to the touch event is identified as the first operator; If it is determined that the touch signal does not carry an electric field marker, the touch source corresponding to the touch event is identified as the second operator.

4. The touch control method for the display device according to claim 1, characterized in that, The electric field sensor includes a sensing loop; The sensing ring is positioned in the gap between the outer frame of the first display area and the flexible printed circuit board pressed onto the glass substrate.

5. The touch control method for the display device according to claim 4, characterized in that, The induction loop is electrically connected to the sine wave generating circuit, which outputs a sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V. The electric field signal is a sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V. The electric field marker is a sine wave signal with a frequency between 40-60KHz and a peak-to-peak value between 5-15V.

6. The touch control method for a display device according to claim 1, characterized in that, The electric field sensor includes an emitter and a collector; Both the emitter and the collector are located in the gap between the outer frame of the first display area and the flexible printed circuit board pressed onto the glass substrate.

7. The touch control method for a display device according to claim 6, characterized in that, The emitter is electrically connected to the output terminal of the negative high voltage generator, the collector is electrically connected to the ground terminal, and a corona current loop is formed between the collector and the emitter. The negative high voltage generator is used to output a negative high voltage DC voltage of -8kV. The electric field signal is a negative high voltage DC signal of -8kV, and the electric field is labeled as a corona field.

8. A touch control device for a display device, characterized in that, The device includes: The touch sensing module is used to acquire touch events generated by the user on the vehicle display screen in the current frame, and determine the touch source of the touch event based on whether the touch event carries a preset electric field mark. The vehicle display screen includes a first display area and a second display area. The first display area is located on the first side of the vehicle display screen, and the second display area is located on the second side of the vehicle display screen. An electric field sensor is set on the first side of the vehicle display screen. When a preset electric field signal is applied to the electric field sensor, the electric field sensor emits a preset electric field mark towards the first side. When the user approaches and touches the vehicle display screen from the first side, the touch event generated by the user on the vehicle display screen carries an electric field mark. The touch control module is used to generate the interactive screen of the current frame in the first display area and / or the second display area according to the touch source.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the touch control method of the display device as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the touch control method for the display device as described in any one of claims 1 to 7.

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