Suspension touch pen, display interaction device and suspension touch system

Abstract

The invention discloses a floating touch pen, a display interaction device and a floating touch system. The floating touch pen communicates with the display interaction device, the floating touch pen comprises a signal sending module, a signal receiving module and a control module, the signal sending module is used for sending a downlink signal to the display interaction device, so that the display interaction device generates signal-to-noise ratio information and generates an uplink signal containing the signal-to-noise ratio information; the signal receiving module is used for receiving an uplink signal, the control module is used for calculating the current suspension height according to the signal-to-noise ratio information, and finally the suspension height is fed back to the display interaction equipment through the signal sending module. According to the method and the device, the suspension touch pen interacts with the display interaction device, so that the suspension touch pen can master the suspension height in real time and feed back the suspension height to the display interaction device, and therefore, the suspension touch pen can realize three-dimensional touch, and the application scene range of the suspension touch pen is widened.

Description

Technical Field

[0001] The present application relates to electronic equipment technology, and in particular to a floating touch pen, a display interaction device and a floating touch system. Background Art

[0002] Mobile electronic devices have driven the rapid development of touch technology, and the demand for three-dimensional floating touch operation has gradually emerged. However, at present, most active capacitive pen products can only achieve two-dimensional writing and recognition, and it is difficult to meet the requirements of three-dimensional touch. Summary of the invention

[0003] The embodiment of the present application provides a floating stylus pen for a floating touch system, wherein the floating touch system includes a display interaction device, the floating stylus pen interacts with the display interaction device, and the floating stylus pen includes:

[0004] A signal sending module, configured to send a downlink signal to the display interaction device, wherein the display interaction device generates signal-to-noise ratio information according to the downlink signal and generates an uplink signal according to the signal-to-noise ratio information;

[0005] A signal receiving module, used to receive an uplink signal sent by the display interaction device;

[0006] A control module, configured to calculate the levitation height of the levitation stylus according to the signal-to-noise ratio information;

[0007] The signal sending module further sends the suspension height to the display interaction device.

[0008] In some embodiments, the operating mode of the floating stylus pen includes a floating mode and a touch mode, and the control module is further configured to:

[0009] When the suspension height is greater than a first height threshold, setting the working mode of the suspension stylus to the suspension mode;

[0010] When the floating height is less than or equal to the first height threshold, the working mode of the floating stylus is set to the touch mode.

[0011] In some embodiments, the control module is further used to generate a control signal according to the levitation height, and the signal sending module includes a boosting unit, a signal generating unit and a transmitting unit;

[0012] The boost unit is connected to the power supply end and the control module, and is used to generate a regulation voltage according to the power supply voltage of the power supply end and the control signal generated by the control module;

[0013] The signal generating unit is connected to the initial voltage terminal, the control module and the boost unit, and is used to generate a downlink signal according to the initial voltage of the initial voltage terminal, the adjustment voltage and the data signal of the control module;

[0014] The transmitting unit is connected to the signal generating unit, and is used for sending the downlink signal to the display interaction device.

[0015] In some embodiments, the boost unit comprises:

[0016] A boost inductor connected to the power supply end;

[0017] A boost capacitor, two ends of which are connected to the boost inductor and the signal generating unit respectively;

[0018] A boost transistor, wherein the first electrode of the boost transistor is connected to the boost inductor, the second electrode is connected to the initial voltage terminal, and the control electrode is connected to the control module, and is used to adjust the regulation voltage of the boost capacitor to the signal generating unit according to the control signal of the control module.

[0019] In some embodiments, the boost unit further comprises:

[0020] A voltage stabilizing diode, with a positive electrode connected to the boost inductor and a negative electrode connected to the capacitor;

[0021] The voltage-stabilizing resistor is connected in parallel across the two ends of the boost capacitor.

[0022] In some embodiments, the signal generating unit includes a first conversion transistor, a second conversion transistor, a third conversion transistor, a fourth conversion transistor, a first NOT gate circuit and a second NOT gate circuit;

[0023] The first electrode of the first conversion transistor is connected to the third electrode of the third conversion transistor, the second electrode is connected to the ground terminal, and the control electrode is connected to the control module;

[0024] The first electrode of the second conversion transistor is connected to the second electrode of the fourth conversion transistor, the second electrode is connected to the ground terminal, and the control electrode is connected to the output terminal of the first non-gate capacitor;

[0025] The first electrode of the third conversion transistor is connected to the initial voltage terminal, the second electrode is connected to the first electrode of the first conversion transistor and the input terminal of the second NOT gate circuit, and the control electrode is connected to the second electrode of the fourth conversion transistor;

[0026] The first electrode of the fourth conversion transistor is connected to the initial voltage terminal;

[0027] The input end of the first NOT gate element is connected to the control module, and the output end of the second NOT gate element is used to output the downlink signal.

[0028] In some embodiments, the floating stylus also includes a somatosensory feedback module, which is electrically connected to the control module. The control module is also configured to activate the somatosensory feedback module to issue a vibration reminder when switching between the floating mode and the touch mode.

[0029] In some embodiments, the floating stylus also includes a somatosensory feedback module, which is electrically connected to the control module, and the control module is configured to activate the somatosensory feedback module to issue a vibration reminder when the floating height is greater than a third height threshold or less than a fourth height threshold.

[0030] The embodiment of the present application further provides a display interaction device for a floating touch system, wherein the floating touch system includes a floating stylus, the display interaction device interacts with the floating stylus, the display interaction device includes a sensing layer and a controller, and the sensing layer is electrically connected to the controller;

[0031] The sensing layer is configured to scan the downlink signal of the floating stylus and record the signal-to-noise ratio information at the current moment according to the downlink signal;

[0032] The controller is configured to generate an uplink signal according to the signal-to-noise ratio information at a current moment;

[0033] The sensing layer is further configured to send the uplink signal to the floating stylus, and the floating stylus calculates the floating height of the floating stylus according to the signal-to-noise ratio information at the current moment. The sensing layer is further configured to receive the floating height sent by the floating stylus.

[0034] In some implementations, the controller is further configured to determine whether the working mode of the floating stylus pen is switched according to the signal-to-noise ratio information at a current moment and the signal-to-noise ratio information at a previous moment.

[0035] In some embodiments, the sensing layer includes a plurality of sensing blocks arranged in an array, the controller is electrically connected to each of the sensing blocks, and the display interaction device further includes a terminal host connected to the controller;

[0036] The controller is further used to calculate the three-dimensional coordinates of the floating stylus according to the downlink signal scanned by the sensor block and the recorded current signal-to-noise ratio information;

[0037] The terminal host is also used to respond to the three-dimensional coordinates to perform corresponding display and operation.

[0038] In some embodiments, the controller is further configured to:

[0039] When the levitation height is greater than a fifth height threshold, the detection algorithm of the sensing layer is adjusted to reduce a minimum signal threshold of the sensing layer scan.

[0040] In some implementations, the controller is further configured to calculate a levitation height of the stylus pen according to the signal-to-noise ratio information.

[0041] The embodiment of the present application further provides a floating touch system, which includes the floating touch pen or the display interaction device.

[0042] In the floating stylus, display interaction device and display system of the embodiments of the present application, the floating stylus sends a downlink signal to the display interaction device, so that the display interaction device generates signal-to-noise ratio information after receiving the downlink signal, generates an uplink signal including the signal-to-noise ratio information, and sends the uplink signal to the floating stylus. Therefore, the floating stylus can calculate the current floating height according to the signal-to-noise ratio information, and feed it back to the display interaction device, so that the display interaction device can grasp the floating height of the floating stylus in real time. Therefore, the display interaction device can perform corresponding operations according to the change of the floating height of the floating stylus. In this way, the floating stylus can meet the three-dimensional touch requirements and improve the application scenario range of the floating stylus. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0044] Figure 1 It is a module schematic diagram of a floating touch system in certain embodiments of the present application.

[0045] Figure 2 It is a scene schematic diagram of a floating touch system in certain embodiments of the present application.

[0046] Figure 3 It is a module schematic diagram of a floating stylus pen in certain embodiments of the present application.

[0047] Figure 4 It is a circuit diagram of a signal sending module of certain embodiments of the present application.

[0048] Main component numbers in the drawings

[0049] 100-suspended touch control system, 10-suspended touch pen, 11-signal sending module, 111-boosting unit, L1-boosting inductor, C1-boosting capacitor, T1-boosting transistor, D1-voltage-stabilizing diode, R1-voltage-stabilizing resistor, 112-signal generating unit, M1-first conversion transistor, M2-second conversion transistor, M3-third conversion transistor, M4-fourth conversion transistor, &1-first NOT gate circuit, &2-second NOT gate circuit, 113-transmitting unit, 12-signal receiving module, 13-control module, 14-body sensing feedback module, 20-display interaction device, 21-sensing layer, 211-sensing block, 22-controller;

[0050] Vc-power supply terminal, Vin-initial voltage terminal, GND-ground terminal. DETAILED DESCRIPTION

[0051] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0052] Three-dimensional display technology is a new type of display technology. Compared with ordinary two-dimensional screen display, three-dimensional display technology can make the picture three-dimensional and realistic, and the image is no longer limited to the plane of the screen. As an interface for human-computer interaction with three-dimensional display, three-dimensional display devices have developed rapidly in recent years. For example, entering the metaverse through a three-dimensional display device can closely integrate the virtual world with the real world.

[0053] However, as one of the auxiliary devices for interacting with three-dimensional display devices, most stylus pens can currently only realize two-dimensional writing and recognition, and it is difficult to realize three-dimensional touch of three-dimensional display devices.

[0054] In view of this, please combine Figure 1 and Figure 2 An embodiment of the present application provides a floating stylus 10 , which is used in a floating touch system 100 . The floating touch system 100 includes a display interaction device 20 , and the floating stylus 10 interacts with the display interaction device 20 .

[0055] The hovering stylus 10 may include a signal sending module 11 , a signal receiving module 12 and a control module 13 . The control module 13 is electrically connected to the signal sending module 11 and the signal receiving module 12 , respectively.

[0056] The signal sending module 11 is used to send a downlink signal to the display interaction device 20, so that the display interaction device 20 generates signal-to-noise ratio information according to the downlink signal. The signal receiving module 12 is used to receive an uplink signal sent by the display interaction device 20, and the uplink signal includes the signal-to-noise ratio information. The control module 13 is also used to calculate the floating height of the floating stylus 10 according to the signal-to-noise ratio information, and the signal sending module 11 is also used to send the floating height to the display interaction device 20.

[0057] In the floating stylus 10 of the embodiment of the present application, the floating stylus 10 sends a downlink signal to the display interaction device 20, so that the display interaction device 20 generates signal-to-noise ratio information after receiving the downlink signal, generates an uplink signal including the signal-to-noise ratio information, and sends the uplink signal to the floating stylus 10. Therefore, the floating stylus 10 can calculate the current floating height according to the signal-to-noise ratio information, and feed it back to the display interaction device 20, so that the display interaction device 20 can grasp the floating height of the floating stylus 10 in real time. Therefore, the display interaction device 20 can perform corresponding operations according to the change of the floating height of the floating stylus 10. In this way, the floating stylus 10 can meet the three-dimensional touch requirements and improve the application scenario range of the floating stylus 10.

[0058] Specifically, the floating touch system 100 may include a floating touch pen 10 and a display interaction device 20 , and the floating touch pen 10 can interact with the display interaction device 20 .

[0059] The floating stylus 10 may be an active capacitive stylus. A person skilled in the art may understand that an active capacitive stylus is a stylus that is designed with active circuits and made of special materials, and has the characteristics of high precision, high sensitivity, high stability, etc., and can be used for writing, drawing, etc. on a capacitive touch screen. The pen tip is generally made of conductive materials and is connected to the battery and circuit inside the pen body through a circuit board. When a user uses a capacitive stylus to write or draw, a weak electric field is formed between the pen tip and the surface of the touch screen, and the direction and magnitude of the current are controlled by the chip on the circuit board, thereby achieving precise control of the touch screen.

[0060] For example, the floating stylus 10 of the embodiment of the present application may be, but is not limited to, an active stylus that supports the Universal Stylus Initiative (USI) protocol, the Huawei Pen Protocol (HPP) protocol, and the Microsoft Pen Protocol (MPP).

[0061] The display interaction device 20 may be a three-dimensional display device. For example, the display interaction device 20 may include but is not limited to AR devices, VR devices, mobile phones, tablets, and other mobile electronic devices with display touch functions.

[0062] The hovering stylus 10 may include a signal sending module 11 , a signal receiving module 12 and a control module 13 . The control module 13 is electrically connected to the signal sending module 11 and the signal receiving module 12 , respectively.

[0063] The control module 13 is the control center of the floating stylus 10. The signal sending module 11 is used to send a downlink signal to the display interaction device 20 under the control of the control module 13. The signal receiving module 12 is used to receive an uplink signal sent by the display interaction device 20. It should be noted that both the downlink signal and the uplink signal are analog signals.

[0064] The control module 13 may include, but is not limited to, a power supply unit, an analog-to-digital signal generating unit, a clock unit, a processing unit, and a storage unit.

[0065] Among them, the power supply unit can be a power supply circuit or a power management integrated circuit (PowerManagement IC, PMIC) chip or a power supply circuit, which is electrically connected to various devices in the hardware circuit of the floating stylus 10 and is used to supply power to various devices in the hardware circuit of the floating stylus 10. For example, the power supply unit can be electrically connected to the signal sending module 11 and the signal receiving module 12 as well as the processing unit, the clock unit and the pure unit, so as to power them.

[0066] The mode signal generating unit can be electrically connected to the signal receiving module 12 and the processing unit, and can be used to convert the analog signal (such as an uplink signal) received by the signal receiving module 12 into a digital signal and send it to the processing unit. The clock unit may include but is not limited to a crystal oscillator unit, a timing control chip (Timing Controller IC, TCIC) or a Timer. The clock unit can generate a basic clock so that the control module 13 can be synchronized with the external signal transmission time axis.

[0067] The processing unit can be a system on chip (SoC) or an MCU (Microcontroller Unit). The processing unit can be electrically connected to the signal sending module 11 and the signal receiving module 12. The processing unit can control the signal sending module 11 to transmit a downlink signal to the display interaction device 20, and can also calculate and process the uplink signal received by the signal receiving module 12, thereby realizing the calculation of the suspension height and other processing.

[0068] When the floating stylus 10 works on the display interaction device 20, the control module 13 can control the signal sending module 11 to send a downlink signal downward. When the display interaction device 20 scans the downlink signal, it will record and generate the signal-to-noise ratio information at this time, then generate an uplink signal containing the signal-to-noise ratio information, and then send the uplink signal. The signal receiving module 12 can detect the uplink signal sent by the display interaction device 20 in real time. When the signal receiving module 12 receives the uplink signal, it can transmit it to the control module 13. The control module 13 converts the uplink signal, which is an analog signal, into an uplink signal, which is a data signal, through the analog-to-digital signal generating unit. Then, the processing unit calculates and processes according to the signal-to-noise ratio information in the uplink signal to generate the current floating height of the floating stylus 10. Finally, the control module 13 sends the floating height to the display interaction device 20 through the signal sending module 11, so that the display interaction device 20 can grasp the floating height of the floating stylus 10 in real time. Therefore, the display interaction device 20 can respond to the change of the floating height of the floating stylus 10 to perform corresponding display operations or control operations. In this way, the three-dimensional touch function of the floating stylus 10 is realized, and the application scenario range of the floating stylus 10 is improved.

[0069] In some embodiments, the working mode of the floating stylus 10 may include a floating mode and a touch mode. The control module 13 is further used to set the working mode of the floating stylus 10 to the floating mode when the floating height is greater than a first height threshold; and to set the working mode of the floating stylus 10 to the touch mode when the floating height is less than or equal to the first height threshold.

[0070] It should be noted that, in the floating mode, the floating stylus 10 does not contact the display interaction device 20 to achieve interaction with the display interaction device 20, and in the touch mode, the floating stylus 10 can directly contact the display interaction device 20. In addition, the functions that the floating stylus 10 can achieve in the floating mode and the touch mode can be the same or different. For example, in the floating mode, the display interaction device 20 can respond to the height change and position change of the floating stylus 10 to achieve corresponding operations or displays, so that the floating stylus 10 can achieve three-dimensional touch, and in the touch mode, the floating stylus 10 can achieve functions such as a brush or a mouse.

[0071] The first height threshold may be 0, that is, the control module 13 is further configured to set the operating mode of the floating stylus 10 to the floating mode when the floating height is greater than 0, and to set the operating mode of the floating stylus 10 to the touch mode when the floating height is less than or equal to 0.

[0072] In this way, the floating stylus 10 automatically sets the switching of the working mode through the floating height, so that the floating stylus 10 is more flexible and the application scenario range of the floating stylus 10 is further improved.

[0073] Please combine Figure 3 and Figure 4 In some embodiments, the control module 13 is also used to generate a control signal according to the suspension height, and the signal sending module 11 includes a boost unit 111, a signal generating unit 112 and a transmitting unit 113; wherein the boost unit 111 is connected to the power supply terminal Vc and the control module 13, and the boost unit 111 is used to generate a regulating voltage according to the power supply voltage of the power supply terminal Vc and the control signal generated by the control module 13.

[0074] The signal generating unit 112 is connected to the initial voltage terminal Vin, the control module 13 and the boost unit 111, and is used to generate a downlink signal according to the initial voltage of the initial voltage terminal Vin, the adjustment voltage and the data signal of the control module 13; the transmitting unit 113 is connected to the signal generating unit 112, and is used to send the downlink signal to the display interaction device 20.

[0075] It can be understood that when the signal strength of the downlink signal sent by the signal sending module 11 is constant, the greater the floating height of the floating stylus 10, the smaller the signal amount of the downlink signal received by the display interaction device 20. If the floating height of the floating stylus 10 exceeds the height at which the display interaction device 20 can scan the downlink signal, the floating stylus 10 and the display interaction device 20 cannot interact. For example, when the floating stylus 10 is in the normal working mode, the maximum floating height of the floating stylus 10 can be 20 mm. If the floating height of the floating stylus 10 exceeds 20 mm, the display interaction device 20 cannot scan the downlink signal sent by the floating stylus 10.

[0076] Therefore, in order to increase the maximum floating height of the floating stylus 10, the signal receiving module 12 is further provided with a boost unit 111, which is used to increase the signal amount (strength) of the downlink signal. When the control module 13 detects that the floating height is greater than a certain height threshold, the boost unit 111 is started to increase the signal amount of the downlink signal, thereby optimizing the problem that the signal amount is low in the long-distance floating touch scene so that the display interaction device 20 cannot scan it.

[0077] For example, in some examples, when the boost unit 111 is not turned on, the maximum suspension height of the floating stylus 10 can be 20 mm, and the height threshold can be 18 mm. When the control module 13 detects that the current suspension height is greater than 18 mm, the control module 13 generates a control signal and transmits it to the boost unit 111 to turn on the boost unit 111, thereby increasing the signal strength of the downlink signal. In this way, the maximum suspension height of the floating stylus 10 can be increased to 50 mm.

[0078] Specifically, the boost unit 111 may include but is not limited to a boost chip, a boost circuit, etc. The boost unit 111 is electrically connected to the control module 13, the power supply terminal Vc, and the signal generating unit 112. The boost unit 111 is used to generate a regulation voltage according to the control signal generated by the control module 13 and the power supply voltage provided by the power supply terminal Vc. The signal generating unit 112 is connected to the initial voltage terminal Vin, the control module 13, and the boost unit 111, and is used to generate a downlink signal according to the initial voltage of the initial voltage terminal Vin, the regulation voltage provided by the boost unit 111, and the data signal of the control module 13. The transmitting unit 113 is connected to the signal generating unit 112. The transmitting unit 113 can be the pen tip electrode of the floating stylus 10, and is used to receive the downlink signal of the signal generating unit 112 and send it to the display interaction device 20.

[0079] In this way, by providing the boost unit 111 , the long-distance suspension of the floating stylus 10 is achieved, further improving the use effect of the floating stylus 10 .

[0080] Please combine Figure 4 In some embodiments, the boost unit 111 includes a boost inductor L1, a boost capacitor C1 and a boost transistor T1, wherein the boost inductor L1 is connected to the power supply terminal Vc, and the two ends of the boost capacitor C1 are respectively connected to the boost inductor L1 and the signal generating unit 112; the first electrode of the boost transistor T1 is connected to the boost inductor L1, the second electrode is connected to the initial voltage terminal Vin, and the control electrode is connected to the control module 13, and the boost transistor T1 is used to adjust the boost capacitor C1 to transmit the regulated voltage to the signal generating unit 112 according to the control signal of the control module 13.

[0081] In this embodiment, the boost unit 111 may be a boost circuit, the boost transistor T1 may be a MOS tube, and the control module 13 provides a control signal to the control electrode of the boost transistor T1, thereby controlling the on and off of the first electrode and the second electrode of the boost transistor T1, thereby controlling the boost inductor L1 to charge the boost capacitor C1, so that the boost capacitor C1 outputs a regulated voltage to the signal generating unit 112. The boost unit 111 can boost the voltage of the downlink signal to 40-60 volts, thereby increasing the signal amount of the downlink signal.

[0082] In some examples, the control signal may be a pulse width modulation signal, and the control module 13 may change the duty cycle of the pulse width modulation signal to change the on and off time of the boost transistor T1, thereby adjusting the output voltage of the boost unit 111, so that the signal strength of the downlink signal generated by the signal generating unit 112 changes to adapt to the floating height of the floating stylus 10.

[0083] For example, when the suspension height is higher, the duty cycle of the pulse width adjustment signal generated by the control module 13 is higher, so that the adjustment voltage output by the boost unit 111 is higher, and the signal amount of the downlink signal output by the signal generating unit 112 is stronger, thereby ensuring that the suspension stylus 10 can interact normally with the display interaction device 20. In any case, when the suspension height is lower, the duty cycle of the pulse width adjustment signal generated by the control module 13 is lower, so that the adjustment voltage output by the boost unit 111 is lower, and the signal amount of the downlink signal output by the signal generating unit 112 is weaker. In this way, while ensuring the normal interaction between the suspension stylus 10 and the display interaction device 20, the power consumption of the suspension stylus 10 can be reduced, and the battery life of the suspension stylus 10 is extended.

[0084] Please combine Figure 4 In some embodiments, the boost unit 111 further includes a zener diode D1 and a zener resistor R1, the positive electrode of the zener diode D1 is connected to the boost inductor L1, and the negative electrode is connected to the capacitor; the zener resistor R1 is connected in parallel to both ends of the boost capacitor C1.

[0085] In this way, by setting the voltage stabilizing diode D1 and the voltage stabilizing resistor R1, it can be ensured that the boost capacitor C1 can stably output the regulated voltage, thereby avoiding fluctuations in the signal quantity of the downlink signal caused by fluctuations in the regulated voltage.

[0086] Please combine Figure 4 In some embodiments, the signal generating unit 112 includes a first conversion transistor M1, a second conversion transistor M2, a third conversion transistor M3, a fourth conversion transistor M4, a first NOT gate circuit &1, and a second NOT gate circuit &2.

[0087] Among them, the first electrode of the first conversion transistor M1 is connected to the third electrode of the third conversion transistor M3 and the input end of the second NOT gate circuit &2, the second electrode is connected to the ground end GND, and the control electrode is connected to the control module 13; the first electrode of the second conversion transistor M2 is connected to the second electrode of the fourth conversion transistor M4, the second electrode is connected to the ground end GND, and the control electrode is connected to the output end of the first NOT gate circuit &1; the first electrode of the third conversion transistor M3 is connected to the initial voltage end Vin, the second electrode is connected to the first electrode of the first conversion transistor M1 and the input end of the second NOT gate circuit &2, and the control electrode is connected to the second electrode of the fourth conversion transistor M4; the first electrode of the fourth conversion transistor M4 is connected to the initial voltage end Vin; the input end of the first NOT gate circuit &1 is connected to the control module 13, and the output end of the second NOT gate circuit &2 is connected to the transmitting unit 113 for outputting a downlink signal.

[0088] It should be noted that the first conversion transistor M1, the second conversion transistor M2, the third conversion transistor M3, and the fourth conversion transistor M4 can all be MOS transistors, and the first conversion transistor M1 and the fourth conversion transistor M4 are of the same type, and the second conversion transistor M2 and the third conversion transistor M3 are of the same type. For example, when the first conversion transistor M1 and the fourth conversion transistor M4 are N-type MOS transistors, the second conversion transistor M2 and the third conversion transistor M3 are P-type MOS transistors, and when the second conversion transistor M2 and the third conversion transistor M3 are N-type MOS transistors, the first conversion transistor M1 and the fourth conversion transistor M4 are P-type MOS transistors. In addition, the source and drain of the conversion transistor can be symmetrical in structure, so the source and drain can be indistinguishable in structure. For example, in the present application, the first electrode of the conversion transistor can be a drain, the second electrode can be a source, and the control electrode can be a gate, or the first electrode can be a source, the second electrode can be a drain, and the third electrode can be a gate.

[0089] In some examples, the second conversion transistor M2 and the third conversion transistor M3 are N-type MOS transistors, that is, they are turned on when they encounter a low level, the first conversion transistor M1 and the fourth conversion transistor M4 are P-type MOS transistors, that is, they are turned on when they encounter a high level, and the data signal can be a high level. When the control module 13 sends a data signal (high level) to the signal generation unit 112, after the control electrode of the first conversion transistor M1 receives the data signal, the first electrode and the second electrode of the first conversion transistor M1 are turned on. At the same time, the data signal is input to the control electrode of the second conversion transistor M2 after being inverted (low level) by the first NOT gate circuit &1, so that the second conversion transistor M2 is turned on, and the control electrode of the third conversion transistor M3 is grounded to make the first electrode and the second electrode turned on, and the level of the second electrode of the third conversion transistor M3 is high. The input end of the second NOT gate circuit &2 is connected to the second end of the third conversion transistor M3, and the second NOT gate circuit &2 outputs a low level signal. The control electrode of the fourth conversion transistor M4 is connected to the second electrode of the third conversion transistor M3, the first electrode and the second electrode of the fourth conversion transistor M4 are turned on, and the second electrode of the fourth conversion transistor M4 is at a high level. Since the control electrode of the third conversion transistor M3 is connected to the second electrode of the fourth conversion transistor M4, the third conversion transistor M3 is turned off, and the second electrode of the third conversion transistor M3 is at a low level. Since the second NOT gate circuit &2 is connected to the second electrode of the third conversion transistor M3, the second NOT gate circuit &2 outputs a high-level signal, that is, a downlink signal is generated and transmitted to the transmitting unit 113, so that the transmitting unit 113 can send the downlink signal to the display interaction device 20.

[0090] Please combine Figure 3 In some embodiments, the floating stylus 10 further includes a somatosensory feedback module 14, which is electrically connected to the control module 13. The control module 13 is further configured to activate the somatosensory feedback module 14 to issue a vibration reminder when switching between the floating mode and the touch mode.

[0091] Specifically, the somatosensory feedback module 14 may include but is not limited to linear motors, rotor motors, microelectrodes, pneumatic modules and other somatosensory tactile forms. When the control module 13 detects a change in the suspension height and the working mode is switched from the touch mode to the suspension mode, or the working mode is switched from the suspension mode to the touch mode, the somatosensory feedback module 14 may be activated to vibrate, thereby reminding the user of the change in the working mode.

[0092] In some embodiments, the control module 13 is configured to activate the somatosensory feedback module 14 to issue a vibration reminder when the levitation height is greater than a third height threshold or less than a fourth height threshold.

[0093] It can be understood that the floating stylus 10 includes a touch mode and a suspension mode, and the floating stylus 10 can switch between the touch mode and the suspension mode according to the suspension height. In some scenarios, the floating stylus 10 needs to remain in one working mode. For example, when the floating stylus 10 needs to remain in the suspension mode, if the suspension height of the floating stylus 10 is too low, it will switch to the touch mode, and if the suspension height of the floating stylus 10 is too high, it cannot interact with the display interaction device 20. Therefore, in order to remind the user to keep the floating stylus 10 within a certain suspension height range, a somatosensory feedback module 14 is set. When the suspension height is higher or lower than the height threshold set for the suspension mode, the user is reminded that the current use distance is too high or too low through the feedback of the somatosensory feedback module 14, so as to achieve human-computer interaction recognition.

[0094] In this embodiment, the third height threshold is less than or equal to the maximum floating height of the floating stylus 10 , the third height threshold may be greater than the fourth height threshold, and the fourth height threshold may be greater than the first height threshold.

[0095] Please combine Figure 2 The embodiment of the present application further provides a display interaction device 20, the display interaction device 20 is used in the floating touch system 100, the floating touch system 100 includes the floating stylus 10 of any of the above embodiments, the display interaction device 20 interacts with the floating stylus 10, the display interaction device 20 includes a sensor layer 21 and a controller 22, and the sensor layer 21 is electrically connected to the controller 22;

[0096] The sensing layer 21 is configured to scan the downlink signal of the suspended stylus 10 and record the signal-to-noise ratio information at the current moment according to the downlink signal; the controller 22 is configured to generate an uplink signal according to the signal-to-noise ratio information at the current moment; the sensing layer 21 is also configured to send the uplink signal to the suspended stylus 10, and the suspended stylus 10 calculates the suspension height of the suspended stylus 10 according to the signal-to-noise ratio information at the current moment to determine the current working mode, and the working modes include the suspended mode and the touch mode.

[0097] In the display interaction device 20 of the embodiment of the present application, the sensor layer 21 scans the floating stylus 10 to send a downlink signal, generates signal-to-noise ratio information after receiving the downlink signal, and sends the signal-to-noise ratio information to the controller 22. The controller 22 generates an uplink signal including the signal-to-noise ratio information, and the sensor layer 21 sends the uplink signal to the floating stylus 10. Therefore, the floating stylus 10 can calculate the current floating height according to the signal-to-noise ratio information and send it to the sensor layer 21. After the sensor layer 21 receives the floating height, the display interaction device 20 can grasp the floating height of the floating stylus 10 in real time. Therefore, corresponding operations can be performed according to the change of the floating height of the floating stylus 10, thereby improving the application scenario range of the display interaction device 20.

[0098] The display interaction device 20 may be an electronic device capable of realizing a touch display function, such as a mobile phone, a tablet, etc. The display interaction device 20 may include a sensing layer 21, a controller 22, and a terminal host, wherein the sensing layer 21 may be a touch layer of the display interaction device 20, and the sensing layer 21 may be a capacitive touch sensing layer 21. The sensing layer 21 may scan the downlink signal sent by the suspended stylus 10, and after scanning the downlink signal, record the signal-to-noise ratio information, and transmit the data to the controller 22, and send an uplink signal to the suspended stylus 10. In addition, the sensing layer 21 may also receive the suspension height sent by the suspended stylus 10. The controller 22 may be a touch controller, which may generate an uplink signal for protecting the signal-to-noise ratio information according to the signal-to-noise ratio information, and send it to the suspended stylus 10 through the sensing layer 21, and may transmit the suspension height of the suspended stylus 10 to the terminal host. The terminal host may realize operations such as display and control, and when the terminal host receives the suspension height, it may respond to the suspension height and perform corresponding display and control operations.

[0099] In some implementations, the controller 22 is further configured to determine whether the working mode of the floating stylus 10 is switched according to the signal-to-noise ratio information at the current moment and the signal-to-noise ratio information at the previous moment.

[0100] In this way, the display interaction device 20 can grasp the working mode of the floating stylus 10 in real time, so as to accurately identify and determine the operation command corresponding to the action of the floating stylus 10, so that the action of the floating stylus 10 can be accurately controlled to perform the corresponding operation.

[0101] See also Figure 2 In some embodiments, the sensing layer 21 includes a plurality of sensing blocks 211 arranged in an array, the controller 22 is electrically connected to each sensing block 211, and the display interaction device 20 also includes a terminal host (not shown in the figure) connected to the controller 22; the controller 22 is also used to calculate the three-dimensional coordinates of the floating stylus according to the downlink signal scanned by the sensing block 211 and the recorded current signal-to-noise ratio information; the terminal host is also used to respond to the three-dimensional coordinates to perform corresponding display and operation.

[0102] Specifically, each sensor block 211 can scan the upper part. When the floating stylus 10 is located above one of the sensor blocks 211 and transmits a downlink signal, the sensor block 211 located directly below the floating stylus 10 senses the downlink signal and changes its capacitance to scan the downlink signal, and transmits it to the controller 22. The controller 22 can generate three-dimensional coordinate information after processing and transmit it to the terminal host. After obtaining the three-dimensional coordinate information, the terminal host can perform corresponding display and control operations. The image content is displayed. In this way, the three-dimensional touch of the floating stylus 10 is realized.

[0103] In some embodiments, the controller 22 is further configured to adjust the detection algorithm of the sensing layer 21 to reduce the minimum signal threshold of the sensing layer 21 scanning when the levitation height is greater than a fifth height threshold.

[0104] It can be understood that when the signal strength of the downlink signal of the stylus pen is constant, the greater the suspension height of the suspension stylus 10, the smaller the signal amount of the downlink signal received by the display interaction device 20. If the suspension height of the suspension stylus 10 exceeds the height at which the display interaction device 20 can scan the downlink signal, the suspension stylus 10 and the display interaction device 20 cannot interact. For example, when the suspension stylus 10 is in normal working mode, the maximum suspension height of the suspension stylus 10 can be 20 mm. If the suspension height of the suspension stylus 10 exceeds 20 mm, the display interaction device 20 cannot scan the downlink signal sent by the suspension stylus 10. Therefore, by adjusting the detection algorithm of the sensor layer 21 to reduce the minimum signal threshold scanned by the sensor layer 21 when the suspension height is greater than the fifth height threshold, the problem of low signal amount in a long-distance suspension touch scene that the display interaction device 20 cannot scan can be optimized.

[0105] In some implementations, the controller 22 may also be configured to calculate the hovering height of the stylus pen 10 according to the signal-to-noise ratio information.

[0106] After calculating the suspension height of the suspension stylus 10, the controller 22 may transmit it to the terminal host. After receiving the suspension height transmitted by the controller 22, in some examples, the terminal host may directly perform corresponding display and control operations according to the suspension height calculated by the controller 22, thereby realizing the three-dimensional touch function of the suspension stylus. Of course, in other examples, the terminal host may also perform corresponding display and control operations according to the suspension height calculated by the controller 22 and the suspension height sent by the suspension stylus 10. For example, the terminal host may calculate the average value of the suspension height calculated by the controller 22 and the suspension height sent by the suspension stylus 10, and then perform corresponding display and control operations in response to the average value, so as to realize the three-dimensional touch function of the suspension stylus 10. In this way, the terminal host avoids the response error caused by the suspension height calculated by the suspension stylus 10 or the suspension height calculated by the controller 22, thereby ensuring the accurate response of the display interaction device 20.

[0107] Please combine Figure 2 The embodiment of the present application further provides a floating touch system 100, wherein the floating touch system 100 includes a floating touch pen 10 according to any one of the above embodiments, and a display interaction device 20 according to any one of the above embodiments.

[0108] In the floating touch system 100 of the present application, the floating stylus 10 sends a downlink signal to the display interaction device 20, so that the display interaction device 20 generates signal-to-noise ratio information after receiving the downlink signal, generates an uplink signal including the signal-to-noise ratio information, and sends the uplink signal to the floating stylus 10. Therefore, the floating stylus 10 can calculate the current floating height according to the signal-to-noise ratio information, and feed it back to the display interaction device 20, so that the display interaction device 20 can grasp the floating height of the floating stylus 10 in real time. Therefore, the display interaction device 20 can perform corresponding operations according to the change of the floating height of the floating stylus 10. In this way, the floating stylus 10 can meet the three-dimensional touch requirements and improve the application scenario range of the floating touch system 100.

[0109] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0110] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0111] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0112] In addition, the functional modules in the various embodiments of the present application may be integrated into a combined module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0113] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A floating stylus pen, characterized in that: Used in a floating touch control system, the floating touch control system includes a display interaction device, the floating touch pen interacts with the display interaction device, and the floating touch pen includes: A signal sending module, configured to send a downlink signal to the display interaction device, wherein the display interaction device generates signal-to-noise ratio information according to the downlink signal and generates an uplink signal according to the signal-to-noise ratio information; A signal receiving module, used to receive an uplink signal sent by the display interaction device; A control module, configured to calculate the levitation height of the levitation stylus according to the signal-to-noise ratio information; The signal sending module is further used to send the suspension height to the display interaction device.

2. The floating stylus pen according to claim 1, characterized in that: The working modes of the floating stylus pen include a floating mode and a touch mode, and the control module is further used for: When the suspension height is greater than a first height threshold, setting the working mode of the suspension stylus to the suspension mode; When the floating height is less than or equal to the first height threshold, the working mode of the floating stylus is set to the touch mode.

3. The floating stylus pen according to claim 1, characterized in that: The control module is further used to generate a control signal according to the suspension height, and the signal sending module includes a boost unit, a signal generating unit and a transmitting unit; The boost unit is connected to the power supply end and the control module, and is used to generate a regulation voltage according to the power supply voltage of the power supply end and the control signal of the control module; The signal generating unit is connected to the initial voltage terminal, the control module and the boost unit, and is used to generate a downlink signal according to the initial voltage of the initial voltage terminal, the adjustment voltage and the data signal of the control module; The transmitting unit is connected to the signal generating unit, and is used for sending the downlink signal to the display interaction device.

4. The floating stylus pen according to claim 3, characterized in that: The boost unit comprises: A boost inductor connected to the power supply end; A boost capacitor, two ends of which are connected to the boost inductor and the signal generating unit respectively; A boost transistor, wherein the first electrode of the boost transistor is connected to the boost inductor, the second electrode is connected to the initial voltage terminal, and the control electrode is connected to the control module, and is used to control the boost capacitor to transmit the regulated voltage to the signal generating unit according to the control signal of the control module.

5. The floating stylus pen according to claim 4, characterized in that: The boost unit further comprises: A voltage stabilizing diode, with a positive electrode connected to the boost inductor and a negative electrode connected to the capacitor; The voltage-stabilizing resistor is connected in parallel across the two ends of the boost capacitor.

6. The floating stylus pen according to claim 3, characterized in that: The signal generating unit includes a first conversion transistor, a second conversion transistor, a third conversion transistor, a fourth conversion transistor, a first NOT gate circuit and a second NOT gate circuit; The first electrode of the first conversion transistor is connected to the third electrode of the third conversion transistor, the second electrode is connected to the ground terminal, and the control electrode is connected to the control module; The first electrode of the second conversion transistor is connected to the second electrode of the fourth conversion transistor, the second electrode is connected to the ground terminal, and the control electrode is connected to the output terminal of the first non-gate capacitor; The first electrode of the third conversion transistor is connected to the initial voltage terminal, the second electrode is connected to the first electrode of the first conversion transistor and the input terminal of the second NOT gate circuit, and the control electrode is connected to the second electrode of the fourth conversion transistor; The first electrode of the fourth conversion transistor is connected to the initial voltage terminal; The input end of the first NOT gate element is connected to the control module, and the output end of the second NOT gate element is connected to the transmitting unit, for outputting the downlink signal.

7. The floating stylus pen according to claim 2, characterized in that: The floating stylus also includes a somatosensory feedback module, which is electrically connected to the control module. The control module is also configured to activate the somatosensory feedback module to issue a vibration reminder when switching between the floating mode and the touch mode.

8. The floating stylus pen according to claim 2, characterized in that: The hovering stylus also includes a somatosensory feedback module, which is electrically connected to the control module. The control module is configured to activate the somatosensory feedback module to issue a vibration reminder when the hovering height is greater than a third height threshold or less than a fourth height threshold.

9. A display interaction device, characterized in that: Used in a suspended touch control system, the suspended touch control system includes a suspended touch pen, the display interaction device interacts with the suspended touch pen, the display interaction device includes a sensor layer and a controller, and the sensor layer is electrically connected to the controller; The sensing layer is configured to scan the downlink signal of the floating stylus and record the signal-to-noise ratio information at the current moment according to the downlink signal; The controller is configured to generate an uplink signal according to the signal-to-noise ratio information at a current moment; The sensing layer is further configured to send the uplink signal to the floating stylus, and the floating stylus calculates the floating height of the floating stylus according to the signal-to-noise ratio information at the current moment. The sensing layer is further configured to receive the floating height sent by the floating stylus.

10. The display interaction device according to claim 9, characterized in that: The controller is further configured to determine whether the working mode of the floating stylus pen is switched according to the signal-to-noise ratio information at a current moment and the signal-to-noise ratio information at a previous moment.

11. The display interaction device according to claim 9, characterized in that: The sensing layer includes a plurality of sensing blocks arranged in an array, the controller is electrically connected to each of the sensing blocks, and the display interaction device also includes a terminal host connected to the controller; The controller is further used to calculate the three-dimensional coordinates of the floating stylus according to the downlink signal scanned by the sensor block and the recorded current signal-to-noise ratio information; The terminal host is also used to respond to the three-dimensional coordinates to perform corresponding display and operation.

12. The display interaction device according to claim 9, characterized in that: The controller is also used for: When the levitation height is greater than a fifth height threshold, the detection algorithm of the sensing layer is adjusted to reduce a minimum signal threshold of the sensing layer scan.

13. The display interaction device according to claim 9, characterized in that: The controller is also used for: The suspension height of the touch suspension pen is calculated according to the signal-to-noise ratio information.

14. A floating touch system, characterized in that: The floating touch system includes the floating touch pen described in any one of claims 1-8, or includes the display interaction device described in any one of claims 9-13.

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