Intelligent interactive tablet and virtual key system and working mode recognition method thereof

Abstract

The invention relates to the field of intelligent interactive tablets, and discloses an intelligent interactive tablet and a virtual key system and a working mode recognition method thereof. The virtual key system of the intelligent interaction tablet comprises a touch sensing module, a controller and a tactile feedback actuator, the touch sensing module is used for detecting a touch signal caused when a user presses a touch area where the virtual key is located, and transmitting the touch signal to the controller; the controller is used for receiving the touch control signal, determining the working mode of the virtual key according to the touch control signal, and outputting a driving signal corresponding to the working mode to the tactile feedback actuator; the tactile feedback actuator is used for generating vibration according to the driving signal and driving a touch area to generate bending vibration. Therefore, the working mode of the virtual key can be effectively identified when the user presses the touch area, the identification efficiency is high, operations such as function pressing and continuous sliding are realized, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent interactive tablets, and particularly to an intelligent interactive tablet, its virtual key system, and a working mode recognition method. Background Art

[0002] In some large-size intelligent interactive tablets, a key module including a power key, a volume adjustment key, etc. is an essential interaction tool, which can provide users with information confirmation input and tactile feedback.

[0003] Since the front surface of a full-screen model intelligent interactive tablet is generally covered by the glass involved in the display module, it is difficult to deploy the above key module on the front surface and can only be deployed on the side surface, the top surface or the bottom surface.

[0004] Currently, virtual keys are increasingly widely used in intelligent interactive tablets. The virtual keys are formed in the touch areas on the side surface, the top surface or the bottom surface of the intelligent interactive tablet. When the user presses the touch area, the key functions corresponding to the virtual keys can be realized. However, how to effectively identify the working mode of the virtual keys has become a problem that needs to be solved. Summary of the Invention

[0005] Embodiments of the present invention aim to provide an intelligent interactive tablet, its virtual key system, and a working mode recognition method, so that the working mode of the virtual keys can be effectively identified when the user presses the touch area, improving the user experience.

[0006] To solve the above technical problems, an embodiment of the first aspect of the present invention provides a virtual key system for an intelligent interactive tablet, including: a touch sensing module, a controller, and a tactile feedback actuator, where the controller is electrically connected to the touch sensing module and the tactile feedback actuator respectively; wherein:

[0007] The touch sensing module is configured to detect a touch signal caused when the user presses the touch area where the virtual key is located, and transmit it to the controller;

[0008] The controller is configured to receive the touch signal, determine the working mode of the virtual key according to the touch signal, and output a driving signal corresponding to the working mode to the tactile feedback actuator;

[0009] The tactile feedback actuator is configured to generate vibration according to the driving signal, driving the touch area to generate bending vibration.

[0010] Optionally, the touch area includes at least one key function area; the touch sensing module is coupled to the key function area, and is configured to detect a touch signal caused when the user presses the key function area of the touch area where the virtual key is located, and transmit it to the controller.

[0011] Optionally, the controller determines the operating mode of the virtual key according to the touch signal, including:

[0012] The controller compares the pressing duration in the touch signal with a preset pressing time threshold:

[0013] If the pressing duration does not exceed the preset pressing time threshold, it is recognized that the working mode of the virtual key when the user presses the touch area is the key mode;

[0014] If the pressing duration exceeds a preset pressing time threshold, it is identified that the working mode of the virtual key when the user presses the touch area is a sliding mode.

[0015] Optionally, the controller determines the operating mode of the virtual key according to the touch signal, including:

[0016] The controller compares the pressure value in the touch signal with a first pressure threshold and a second pressure threshold respectively, and the first pressure threshold is lower than the second pressure threshold:

[0017] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the change in finger position is lower than the first position threshold, or if the pressure value of the pressing force exceeds the second pressure threshold and the change in finger position is lower than the first position threshold, it is recognized that the operating mode of the virtual key when the user presses the touch area is the key mode;

[0018] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is higher than the first position threshold, it is recognized that the working mode of the virtual key when the user presses the touch area is the sliding mode.

[0019] Optionally, one end of the tactile feedback actuator is coupled to the touch area, and the other end of the tactile feedback actuator is electrically connected to the controller.

[0020] Optionally, the virtual key system of the smart interactive tablet also includes a power amplifier, which is electrically connected to the controller and the tactile feedback actuator respectively. The power amplifier is used to amplify the driving signal output by the controller and provide the amplified driving signal to the tactile feedback actuator.

[0021] Accordingly, the second aspect of the present invention provides an intelligent interactive tablet, which includes the virtual key system and host of the intelligent interactive tablet described in the first aspect of the present invention. The virtual key system of the intelligent interactive tablet provides press events for the host and receives control of the host.

[0022] Accordingly, an embodiment of the third aspect of the present invention provides a method for recognizing the working mode of a virtual button system, which is applied to the virtual button system of the intelligent interaction tablet described in the embodiment of the first aspect of the present invention. The method for recognizing the working mode of the virtual button system includes:

[0023] Detect the touch signal caused when the user presses the touch area where the virtual button is located;

[0024] Determine the working mode of the virtual button according to the touch signal, and output a driving signal corresponding to the working mode;

[0025] Generate vibration according to the driving signal, and drive the touch area to generate bending vibration.

[0026] Optionally, the determining the working mode of the virtual button according to the touch signal includes:

[0027] Compare the pressing duration in the touch signal with a preset pressing time threshold:

[0028] If the pressing duration does not exceed the preset pressing time threshold, it is recognized that the working mode of the virtual button when the user presses the touch area is the button mode;

[0029] If the pressing duration exceeds the preset pressing time threshold, it is recognized that the working mode of the virtual button when the user presses the touch area is the sliding mode.

[0030] Optionally, the determining the working mode of the virtual button according to the touch signal includes:

[0031] Compare the pressure value in the touch signal with a first pressure threshold and a second pressure threshold respectively, and the first pressure threshold is lower than the second pressure threshold:

[0032] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is lower than the first position threshold, or, if the pressure value of the pressing force exceeds the second pressure threshold, and the finger position change is lower than the first position threshold, it is recognized that the working mode of the virtual button when the user presses the touch area is the button mode;

[0033] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is higher than the first position threshold, it is recognized that the working mode of the virtual button when the user presses the touch area is the sliding mode.

[0034] Compared with the prior art, the present invention provides an intelligent interactive tablet, its virtual key system, and a working mode recognition method. The virtual key system of the intelligent interactive tablet includes a touch sensing module, a controller, and a haptic feedback actuator. The controller is electrically connected to the touch sensing module and the haptic feedback actuator respectively. Wherein: the touch sensing module is used to detect the touch signal caused when the user presses the touch area where the virtual key is located and transmit it to the controller; the controller is used to receive the touch signal transmitted by the touch sensing module, determine the working mode of the virtual key according to the touch signal, and output a driving signal corresponding to the working mode to the haptic feedback actuator; the haptic feedback actuator abuts against the touch area and is used to provide a vibration haptic feedback effect according to the driving signal. Thus, the working mode of the virtual key can be effectively recognized when the user presses the touch area, with high recognition efficiency, and the pressing function and continuous sliding operation can be realized, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0036] Figure 1 is a schematic structural diagram of a virtual key system of an intelligent interactive tablet provided by the present invention;

[0037] Figure 2 is a schematic diagram of a linear motor as the haptic feedback actuator pasted on a thinning structure in the virtual key system of an intelligent interactive tablet provided by the present invention;

[0038] Figure 3 is a schematic diagram of a linear motor as the haptic feedback actuator fixedly installed on a thinning structure in the virtual key system of an intelligent interactive tablet provided by the present invention;

[0039] Figure 4 is a schematic diagram of a piezoelectric ceramic actuator as the haptic feedback actuator pasted on a thinning structure in the virtual key system of an intelligent interactive tablet provided by the present invention;

[0040] Figure 5 is a schematic diagram of multiple piezoelectric ceramic actuators as the haptic feedback actuators pasted on a thinning structure in the virtual key system of an intelligent interactive tablet provided by the present invention;

[0041] Figure 6 is a schematic diagram of the finger sliding operation and vibration feedback effect when the virtual key system of an intelligent interactive tablet provided by the present invention is in the sliding mode;

[0042] Figure 7It is another structural schematic diagram of the virtual key system of an intelligent interactive flat panel provided by the present invention;

[0043] Figure 8 It is a structural schematic diagram of an intelligent interactive flat panel provided by the present invention;

[0044] Figure 9 It is a flow schematic diagram of a method for identifying the working mode of a virtual key system provided by the present invention.

[0045] Main component symbol description:

[0046] Virtual key system 10 of the intelligent interactive flat panel, housing 1

[0047] Frame 11, touch area 111

[0048] Thinning structure 112, touch sensing module 2

[0049] Controller 3, tactile feedback actuator 4

[0050] Linear motor 41, piezoelectric ceramic actuator 42

[0051] Power amplifier 5, adapter bracket 8

[0052] Host 20, intelligent interactive flat panel 100 Detailed implementation manners

[0053] For the convenience of understanding the present invention, the present invention will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in this specification in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0055] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0056] In some large-sized intelligent interactive tablets, a key module including a power key, a volume adjustment key, etc. is an essential interactive tool, which can provide information confirmation input and tactile feedback for users.

[0057] Since the front surface of a full-screen model intelligent interactive tablet is generally covered by the glass involved in the display module, it is difficult to deploy the above key module on the front surface and can only be deployed on the side surface, the top surface or the bottom surface.

[0058] Currently, virtual keys are increasingly widely used in intelligent interactive tablets. The virtual keys are formed in the touch areas on the side surface, the top surface or the bottom surface of the intelligent interactive tablet. By pressing the touch area, the user can realize the key functions corresponding to the virtual keys.

[0059] The inventor of the present invention found in the development of related technologies that when the user presses the virtual key area, there are requirements for different working modes, such as a key mode, a sliding mode, etc. Therefore, how to implement different working mode switches in the virtual keys and how to effectively identify the working mode of the virtual keys have become technical problems that need to be solved currently.

[0060] To this end, in view of the above technical problems found in the research and development process, the present application provides a virtual key system for an intelligent interactive tablet, including a touch sensing module, a controller and a tactile feedback actuator. The touch sensing module detects the touch signal caused when the user presses the touch area where the virtual key is located. The controller determines the working mode of the virtual key according to the touch signal and outputs a driving signal corresponding to the working mode. The tactile feedback actuator generates vibration according to the driving signal, drives the touch area to generate bending vibration, and generates a vibration tactile feedback effect, so that the working mode of the virtual key can be effectively identified when the user presses the touch area, with high recognition efficiency, and the pressing function and continuous sliding operation can be realized, improving the user experience.

[0061] To facilitate understanding of the above inventive concept of the present invention, the following will further describe the above inventive concept of the present invention in more detail with reference to the accompanying drawings and specific embodiments.

[0062] In one embodiment, asFigure 1 As shown in the figure, the present invention provides a virtual key system 10 for an intelligent interactive flat panel. The virtual key system 10 of the intelligent interactive flat panel includes: a touch sensing module 2, a controller 3, and a haptic feedback actuator 4. The controller 3 is electrically connected to the touch sensing module 2 and the haptic feedback actuator 4 respectively; wherein:

[0063] The touch sensing module 2 is configured to detect a touch signal caused when a user presses a touch area where a virtual key is located, and transmit it to the controller 3;

[0064] The controller 3 is configured to receive the touch signal transmitted by the touch sensing module 2, determine the working mode of the virtual key according to the touch signal, and output a driving signal corresponding to the working mode to the haptic feedback actuator 4;

[0065] The haptic feedback actuator 4 is configured to generate vibration according to the driving signal, and drive the touch area to generate bending vibration.

[0066] In this embodiment, by providing a virtual key system for an intelligent interactive flat panel, including a touch sensing module, a controller, and a haptic feedback actuator, the controller is electrically connected to the touch sensing module and the haptic feedback actuator respectively; wherein: the touch sensing module is configured to detect a touch signal caused when a user presses a touch area where a virtual key is located, and transmit it to the controller; the controller is configured to receive the touch signal transmitted by the touch sensing module, determine the working mode of the virtual key according to the touch signal, and output a driving signal corresponding to the working mode to the haptic feedback actuator; the haptic feedback actuator is configured to generate vibration according to the driving signal, and drive the touch area to generate bending vibration. Thus, the working mode of the virtual key can be effectively recognized when the user presses the touch area, with high recognition efficiency, and the pressing function and continuous sliding operation can be realized, improving the user experience.

[0067] In one embodiment, as Figures 2 to 5 shown, the intelligent interactive flat panel 100 with virtual keys further includes a housing 1. The housing 1 includes a frame 11, and a touch area 111 is provided on the outer side of the frame 11.

[0068] Specifically, the housing 1 includes a frame 11. The position of the frame 11 can be determined according to the overall structure of the intelligent interactive flat panel. For example, the position of the frame 11 can be on the side of the housing 1, or on the top surface of the housing 1, or on the bottom surface of the housing 1.

[0069] The frame 11 is of a T-shaped structure. For example, the whole frame 11 can be processed by an extrusion molding process. A touch area 111 is provided on the outer side of the frame 11 for the user to perform pressing and sliding operations. The touch area 111 is smaller than the length of the frame 11.

[0070] The touch area 111 can perform pressing and sliding operations. The touch area 111 can include a button function area, or can include a plurality of continuously arranged button function areas. Each button function area is preset to correspond to a certain button function, so that the button function area can form a virtual button. For example, one button function area corresponds to a power button, one button function area corresponds to a volume adjustment button, or one button function area corresponds to a menu button, etc. In addition, to ensure the same vibration feeling at different pressing positions, different driving voltages are applied to the haptic feedback actuator 4 at different positions to achieve this.

[0071] A thinning structure 112 is formed by local material removal processing at a position on the inner side of the frame 11 relative to the touch area 111. The thinning structure 112 can make the touch area 111 vibrate more easily and enhance the vibration haptic feedback effect.

[0072] It can be understood that the inner side and the outer side of the frame 11 are distinguished by facing the outside and the inside of the intelligent interactive tablet. The side facing the inside of the intelligent interactive tablet is the inner side of the frame, and the side facing the outside of the intelligent interactive tablet is the outer side of the frame.

[0073] Optionally, silk printing or other surface treatments are provided on the outer surface of the outer side of the frame 11 relative to the touch area 111, so as to enhance pressing identification and facilitate blind operation by the user.

[0074] In this embodiment, by providing a touch area on the outer side of the frame, the touch area can be pressed and slid to implement virtual button operations, and a touch sensing module is used to detect the touch signal of the touch area to implement pressing event detection. This can avoid opening holes in the frame, there is no gap at the position of the virtual button, ensuring the beautiful appearance of the intelligent interactive tablet product while also realizing the function of the button switch, which is different from the prior art mechanical button switch that needs to be installed with holes on the outer shell, there are mechanical button gaps on the appearance, and different from the prior art method of using mechanical buttons that requires a certain displacement stroke to press the button to activate the button switch.

[0075] In one embodiment, the touch sensing module 2 is disposed in the housing 1 and is electrically connected to the controller 3, and is used to detect the touch signal caused when the user presses the touch area 111 where the virtual button is located and transmit it to the controller 3.

[0076] Specifically, the touch sensing module 2 is disposed in the housing 1 and is coupled to the button function area of the touch area 111.

[0077] If the touch area 111 includes a plurality of button function areas arranged continuously, then correspondingly it also includes a plurality of touch sensing modules 2, and the plurality of touch sensing modules 2 are coupled to the plurality of button function areas of the touch area 111.

[0078] When the user performs a touch press on the touch area 111, the touch sensing module 2 detects the bending strain of the button function area of the touch area 111, outputs a pressure value voltage signal as a touch signal, and the controller 3 can implement touch positioning and pressure detection functions by calibrating and algorithmically controlling the touch signal.

[0079] If the touch area 111 includes a plurality of button function areas arranged continuously, when the user performs a touch press on the touch area 111, the plurality of touch sensing modules 2 respectively detect the bending strain at the positions of their respective button function areas, and output different pressure value voltage signals as touch signals. The controller 3 can implement touch positioning and pressure detection functions by calibrating and algorithmically controlling the touch signals output from multiple channels.

[0080] For example, the touch sensing module 2 is used for pressing force and positioning detection, and includes a pressure sensor, an ultrasonic sensor, a capacitive sensor, etc. For example, the pressure sensor may include a resistive strain pressure sensor or a piezoelectric ceramic pressure sensor.

[0081] In this embodiment, by arranging the touch sensing module in the housing and coupling it to the button function area of the touch area, when the user performs a touch press on the touch area, the touch sensing module can detect the deformation of the button function area of the touch area of the frame to implement the detection of the press event, and output a pressure value voltage signal as a touch signal to the controller for processing. The controller can implement touch positioning and pressure detection by calibrating and algorithmically controlling the touch signal. Thereby, it is possible to avoid opening holes in the frame, and there are no gaps at the positions of the virtual buttons, ensuring the beautiful appearance of the intelligent interactive tablet product while also implementing the function of the button switch.

[0082] In one embodiment, the controller 3 is arranged in the housing 1 and is electrically connected to the touch sensing module 2 and the haptic feedback actuator 4 respectively, and is used for receiving the touch signal transmitted by the touch sensing module 2, determining the working mode of the virtual button according to the touch signal, and outputting a driving signal corresponding to the working mode to the haptic feedback actuator 4.

[0083] Specifically, the controller 3 is also communicatively connected to the host, and is used for providing a press event to the host and receiving the control of the host.

[0084] The working modes of the virtual button include a button mode and a sliding mode.

[0085] When the user performs a touch and press operation on the touch area 111, when the user presses the touch area 111, it is detected by the touch sensing module 2 and reported to the controller 3 to trigger a press event, and is reported by the controller 3 to the host.

[0086] If the controller 3 identifies that the working mode of the virtual button is the button mode when the user presses the touch area 111, the controller 3 will output a drive signal of a vibration feedback waveform to the haptic feedback actuator 4 to drive the haptic feedback actuator 4 to generate an effect simulating a physical button on the corresponding surface. Among them, in the button mode, the press event includes pressing and lifting, corresponding to the rising edge and falling edge of the pressure. Therefore, each press event includes two vibrations and two event reports. Thus, the technology of combining vibration feedback with pressure detection is used to simulate the pressing and lifting feedback and touch positioning of a mechanical button. Among them, multiple drive signals of vibration feedback waveforms can be pre-stored in the controller 3 as various haptic feedback effects provided to the user for the user to select in the settings. And the controller 3 can provide different drive signals of vibration feedback waveforms to the haptic feedback actuator 4 according to different pressing positions. At this time, when the host receives the press event, it can execute the preset actions corresponding to the press event, such as performing actions such as turning off or turning on the screen.

[0087] If the controller 3 identifies that the working mode of the virtual button is the sliding mode when the user presses the touch area 111, the controller 3 will uniformly output a drive signal of a vibration feedback waveform to the haptic feedback actuator 4 according to the single sliding displacement to drive the haptic feedback actuator 4 to generate a pulley effect on the corresponding surface (as Figure 6 shown). At the same time, the controller 3 reports the current position of the finger to the host at the same time, so that the host can perform corresponding operations, such as adjusting the volume, adjusting the brightness or scrolling the menu bar, etc.

[0088] When the user performs a touch and press operation on the touch area 111, the touch sensing module 2 coupled below the touch area 111 detects and obtains the pressing force and the pressing duration applied to the touch area 111. The touch sensing module 2 outputs the pressure value voltage signal of the pressing force and the pressing duration as a touch signal to the controller 3 electrically connected thereto, and the controller 3 processes the touch signal.

[0089] The controller 3 determines the working mode of the virtual button when the user presses the touch area 111 in the following manner:

[0090] Method 1: The controller 3 identifies the working mode of the virtual button when the user presses the touch area 111 according to the pressing duration. Specifically, it includes:

[0091] The controller 3 compares the pressing duration in the touch signal with a preset pressing time threshold. If the pressing duration does not exceed the preset pressing time threshold, it identifies that the working mode of the virtual button when the user presses the touch area 111 is the button mode; if the pressing duration exceeds the preset pressing time threshold, it identifies that the working mode of the virtual button when the user presses the touch area 111 is the sliding mode.

[0092] Method 2: The controller 3 identifies the working mode of the virtual button when the user presses the touch area 111 according to the pressing force. Specifically, it includes:

[0093] The controller 3 compares the pressure value in the touch signal with a preset pressure threshold to identify the working mode of the virtual button when the user presses the touch area 111. Among them, the preset pressure threshold includes a first pressure threshold and a second pressure threshold, and the first pressure threshold is lower than the second pressure threshold.

[0094] Specifically, if the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is lower than the first position threshold, or if the pressure value of the pressing force exceeds the second pressure threshold and the finger position change is lower than the first position threshold, it is identified that the working mode of the virtual button when the user presses the touch area 111 is the button mode.

[0095] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is higher than the first position threshold, it is identified that the working mode of the virtual button when the user presses the touch area 111 is the sliding mode.

[0096] Further, when it is identified that the working mode of the virtual button when the user presses the touch area 111 is the button mode, it may specifically include the following:

[0097] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is lower than the first position threshold, it is identified that the touch pressing operation is a light touch operation.

[0098] When two consecutive touch pressing operations are both identified as light touch operations, if the time between the two light touches is less than the first time threshold, it is further identified that the touch pressing operation is a double click operation.

[0099] When two consecutive touch pressing operations are both identified as light touch operations, if the time between the two light touches is greater than the first time threshold, it is further identified that the touch pressing operation is a single click operation.

[0100] If the pressure value of the pressing force exceeds the second pressure threshold and the finger position change is lower than the first position threshold, it is identified that the touch pressing operation is a heavy press operation.

[0101] It can be understood that the controller 3 has data processing and signal processing capabilities and can be an integrated circuit chip. For example, the controller 3 can be a general-purpose processor, a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), or other programmable logic devices, etc. The general-purpose processor can be a microprocessor, an MCU (Microcontroller Unit), or any conventional processor, etc.

[0102] In this embodiment, the working mode of the virtual button when the user presses the touch area is identified by the pressing duration, or in combination with the comparison result of the pressure value of the pressing force and the preset pressure thresholds (the first pressure threshold and the second pressure threshold), and then in combination with the comparison result of the finger position change and the first position threshold to identify the working mode of the virtual button when the user presses the touch area. The working mode of the virtual button when the user presses the touch area can be accurately identified, enabling the user's operation to be more intuitive and efficient, and making the adjustment of the intelligent interactive flat panel parameters more convenient, intuitive, and efficient.

[0103] In one embodiment, the haptic feedback actuator 4 is disposed inside the frame 11 of the housing, is electrically connected to the controller 3, and abuts against the touch area 111 for providing a vibration haptic feedback effect according to the drive signal.

[0104] Specifically, the haptic feedback actuator 4 is disposed inside the frame 11 and abuts against the touch area 111. Specifically, one end of the haptic feedback actuator 4 is coupled to the touch area 111, and the other end of the haptic feedback actuator 4 is electrically connected to the controller 3. The haptic feedback actuator 4 is used to provide a vibration driving force, generate vibration according to the drive signal output by the controller 3, drive the frame 11 where the touch area 111 is located to generate bending vibration, so as to generate a haptic feedback effect and enhance the user experience.

[0105] For example, the haptic feedback actuator 4 can include a linear motor 41 (Linear Resonant Actuators, LRA). The linear motor 41 is used to provide a vibration driving force, drive and generate vibration according to the drive signal output by the controller 3, drive the frame 11 where the thinning structure 112 is located to generate bending vibration, so as to generate a haptic feedback effect and enhance the user experience. The number of the linear motors 41 can be one or more, and the specific number can be determined according to the haptic feedback effect requirements of the intelligent interactive flat panel.

[0106] Such as Figure 2As shown, the linear motor 41 can be directly pasted on the thinning structure 112 inside the frame 11. For example, the linear motor 41 can be directly pasted on the thinning structure 112 inside the frame 11 through glue, causing local bending vibration of the thinning structure 112.

[0107] As Figure 3 shown, the linear motor 41 can also be fixed on the thinning structure 112 inside the frame 11 through an adapter bracket 8, causing local bending vibration of the thinning structure 112 and being convenient for disassembly and assembly.

[0108] For another example, the tactile feedback actuator 4 can also include a piezoelectric ceramic actuator 42. The piezoelectric ceramic actuator 42 is used to provide a vibration driving force, drive and generate vibration according to the driving signal output by the controller 3, drive the frame 11 where the thinning structure 112 is located to generate bending vibration, so as to generate a tactile feedback effect and enhance the user experience. The number of the piezoelectric ceramic actuators 42 can be one or multiple, and the specific number can be determined according to the tactile feedback effect requirements of the intelligent interactive flat panel. Among them, the piezoelectric ceramic actuator 42 can include a single-layer piezoelectric ceramic actuator to reduce the voltage of the driving electrical signal; or it can include a multi-layer piezoelectric ceramic actuator to further reduce the voltage of the driving electrical signal.

[0109] As Figure 4 and Figure 5 shown, the piezoelectric ceramic actuator 42 can be directly pasted on the thinning structure 112 inside the frame. For example, the piezoelectric ceramic actuator can be directly pasted on the thinning structure 112 inside the frame 11 through glue, causing local bending vibration of the thinning structure 112.

[0110] In this embodiment, by arranging a tactile feedback actuator inside the frame and making the tactile feedback actuator abut against the touch area, generating vibration according to the driving signal output by the controller, driving the frame where the touch area is located to generate bending vibration, so as to generate a tactile feedback effect, enabling the user's touch and press operation to obtain confirmatory feedback information, reducing the misoperation rate, and enhancing the user experience.

[0111] In one embodiment, as Figure 7 shown, the virtual key system 10 of the intelligent interactive flat panel further includes a power amplifier 5. The power amplifier 5 is electrically connected to the controller 3 and the tactile feedback actuator 4 respectively. The power amplifier 5 is used to amplify the driving signal output by the controller 3 and provide the amplified driving signal for the tactile feedback actuator 4 to meet the driving voltage requirement of the tactile feedback actuator 4.

[0112] Based on the same concept, as Figure 8As shown in the figure, an embodiment of the present invention further provides an intelligent interactive flat panel 100, which includes the virtual key system 10 of the intelligent interactive flat panel described in any of the above embodiments and a host 20. The virtual key system 10 of the intelligent interactive flat panel provides a pressing event for the host 20 and receives the control of the host 20.

[0113] In this embodiment, the virtual key system 10 of the intelligent interactive flat panel is the same as the virtual key system 10 of the intelligent interactive flat panel described in any of the above embodiments. The specific structure and functions can refer to the virtual key system 10 of the intelligent interactive flat panel described in any of the above embodiments, and will not be elaborated here.

[0114] In this embodiment, by providing an intelligent interactive flat panel, which includes a virtual key system of the intelligent interactive flat panel and a host, the virtual key system of the intelligent interactive flat panel provides a pressing event for the host and receives the control of the host. The virtual key system of the intelligent interactive flat panel includes a touch sensing module, a controller, and a haptic feedback actuator. The controller is electrically connected to the touch sensing module and the haptic feedback actuator respectively; wherein: the touch sensing module is used to detect the touch signal caused when the user presses the touch area where the virtual key is located and transmit it to the controller; the controller is used to receive the touch signal transmitted by the touch sensing module and determine the working mode of the virtual key according to the touch signal, and output a driving signal corresponding to the working mode to the haptic feedback actuator; the haptic feedback actuator is used to generate vibration according to the driving signal and drive the touch area to generate bending vibration. Thus, the working mode of the virtual key can be effectively recognized when the user presses the touch area, with high recognition efficiency, and the pressing function and continuous sliding operation can be realized, improving the user experience.

[0115] It should be noted that the above embodiment of the intelligent interactive flat panel and the embodiment of the virtual key system of the intelligent interactive flat panel belong to the same concept. The specific implementation process can be seen in the embodiment of the virtual key system of the intelligent interactive flat panel, and the technical features in the embodiment of the virtual key system of the intelligent interactive flat panel are all correspondingly applicable in the above embodiment of the intelligent interactive flat panel, and will not be elaborated here.

[0116] Based on the same concept, as Figure 9 shown, an embodiment of the present invention provides a method for recognizing the working mode of a virtual key system. The method for recognizing the working mode of the virtual key system is applied to the virtual key system 10 of the intelligent interactive flat panel described in any of the above embodiments; the method for recognizing the working mode of the virtual key system includes:

[0117] S1. Detect the touch signal caused when the user presses the touch area where the virtual key is located;

[0118] S2. Determine the working mode of the virtual button according to the touch signal, and output a driving signal corresponding to the working mode;

[0119] S3. Generate vibration according to the driving signal to drive the touch area to generate bending vibration.

[0120] In this embodiment, by providing a method for identifying the working mode of a virtual button system, it includes detecting the touch signal caused when the user presses the touch area where the virtual button is located; determining the working mode of the virtual button according to the touch signal, and outputting a driving signal corresponding to the working mode; generating vibration according to the driving signal to drive the touch area to generate bending vibration. Thus, when the user presses the touch area, the working mode of the virtual button can be effectively identified, with high identification efficiency, and the pressing function and continuous sliding operation can be realized, improving the user experience.

[0121] In one embodiment, in step S2, determining the working mode of the virtual button according to the touch signal includes:

[0122] Compare the pressing duration in the touch signal with a preset pressing time threshold:

[0123] If the pressing duration does not exceed the preset pressing time threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the button mode;

[0124] If the pressing duration exceeds the preset pressing time threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the sliding mode.

[0125] In one embodiment, in step S2, determining the working mode of the virtual button according to the touch signal includes:

[0126] Compare the pressure value in the touch signal with a first pressure threshold and a second pressure threshold respectively, where the first pressure threshold is lower than the second pressure threshold:

[0127] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is lower than the first position threshold, or, if the pressure value of the pressing force exceeds the second pressure threshold and the finger position change is lower than the first position threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the button mode;

[0128] If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is higher than the first position threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the sliding mode.

[0129] It should be noted that the above method embodiments and the above virtual key system embodiments of the intelligent interactive flat panel belong to the same concept. For the specific implementation process, please refer to the virtual key system embodiments of the intelligent interactive flat panel. Moreover, the technical features in the virtual key system embodiments of the intelligent interactive flat panel are equally applicable to the above method embodiments, and will not be elaborated here.

[0130] It should be noted that in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the presence of additional identical elements in the process, method, article or device including such element.

[0131] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A virtual key system for an intelligent interactive tablet, characterized in that, Comprising: A touch sensing module, a controller, and a haptic feedback actuator, wherein the controller is electrically connected to the touch sensing module and the haptic feedback actuator respectively; wherein: The touch sensing module is configured to detect a touch signal caused when a user presses a touch area where a virtual button is located, and transmit it to the controller; The controller is configured to receive the touch signal, determine the working mode of the virtual button according to the touch signal, and output a driving signal corresponding to the working mode to the haptic feedback actuator; The haptic feedback actuator is configured to generate vibration according to the driving signal, driving the touch area to generate bending vibration.

2. The virtual key system of the intelligent interactive flat panel according to claim 1, characterized in that, The touch area includes at least one button function area; the touch sensing module is coupled to the button function area, and is configured to detect a touch signal caused when a user presses the button function area of the touch area where the virtual button is located, and transmit it to the controller.

3. The virtual key system of the intelligent interactive tablet according to claim 1, characterized in that, The controller determines the working mode of the virtual button according to the touch signal, including: The controller compares the pressing duration in the touch signal with a preset pressing time threshold: If the pressing duration does not exceed the preset pressing time threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the button mode; If the pressing duration exceeds the preset pressing time threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the sliding mode.

4. The virtual key system of the intelligent interactive flat panel according to claim 1, wherein The controller determines the working mode of the virtual button according to the touch signal, including: The controller compares the pressure value in the touch signal with a first pressure threshold and a second pressure threshold respectively, and the first pressure threshold is lower than the second pressure threshold: If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is lower than the first position threshold, or, if the pressure value of the pressing force exceeds the second pressure threshold, and the finger position change is lower than the first position threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the button mode; If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is higher than the first position threshold, it is identified that the working mode of the virtual button when the user presses the touch area is the sliding mode.

5. The virtual key system of the intelligent interactive tablet according to claim 1, characterized in that, One end of the haptic feedback actuator is coupled to the touch area, and the other end of the haptic feedback actuator is electrically connected to the controller.

6. The virtual key system of the intelligent interactive flat panel according to claim 1, characterized in that The virtual button system of the intelligent interactive flat panel further includes a power amplifier, and the power amplifier is electrically connected to the controller and the haptic feedback actuator respectively. The power amplifier is configured to amplify the driving signal output by the controller and provide the amplified driving signal for the haptic feedback actuator.

7. An intelligent interactive tablet, characterized in that, The intelligent interactive flat panel includes the virtual button system of the intelligent interactive flat panel according to any one of claims 1 to 6 and a host. The virtual button system of the intelligent interactive flat panel provides a pressing event for the host and receives the control of the host.

8. A method for identifying the working mode of a virtual key system, characterized in that, The method for identifying the working mode of the virtual key system is applied to the virtual key system of the intelligent interactive tablet according to any one of claims 1 to 6. The method for identifying the working mode of the virtual key system includes: Detecting a touch signal caused when a user presses a touch area where a virtual key is located; Determining the working mode of the virtual key according to the touch signal and outputting a driving signal corresponding to the working mode; Generating vibration according to the driving signal to drive the touch area to generate bending vibration.

9. The method for identifying the working mode of the virtual key system according to claim 8, wherein The determining the working mode of the virtual key according to the touch signal includes: Comparing the pressing duration in the touch signal with a preset pressing time threshold: If the pressing duration does not exceed the preset pressing time threshold, it is identified that the working mode of the virtual key when the user presses the touch area is the key mode; If the pressing duration exceeds the preset pressing time threshold, it is identified that the working mode of the virtual key when the user presses the touch area is the sliding mode.

10. The method for identifying the working mode of the virtual key system according to claim 8, wherein, The determining the working mode of the virtual key according to the touch signal includes: Respectively comparing the pressure value in the touch signal with a first pressure threshold and a second pressure threshold, where the first pressure threshold is lower than the second pressure threshold: If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is lower than the first position threshold, or if the pressure value of the pressing force exceeds the second pressure threshold and the finger position change is lower than the first position threshold, it is identified that the working mode of the virtual key when the user presses the touch area is the key mode; If the pressure value of the pressing force exceeds the first pressure threshold and is lower than the second pressure threshold, and the finger position change is higher than the first position threshold, it is identified that the working mode of the virtual key when the user presses the touch area is the sliding mode.

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