State control method of touch display device, touch display device and storage medium

Abstract

The present invention discloses a state control method of a touch display device, a touch display device and a storage medium. The method comprises: when the touch display device is in a standby state, receiving a touch operation, the touch operation being an operation of a received touch object touching the touch display device; obtaining a current light intensity value collected by a light intensity sensor in the touch display device; when the current light intensity value is not equal to a preset light intensity value and the duration is longer than the preset duration, maintaining the standby state of the touch display device and entering a writing state. In an embodiment of the present invention, by obtaining a current light intensity value collected by a light intensity sensor in the touch display device; when the current light intensity value is not equal to a preset light intensity value and the duration is longer than the preset duration, maintaining the standby state of the touch display device and entering a writing state, the standby state of the touch display device is maintained during the writing process.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of touch screens, and in particular to a state control method of a touch display device, a touch display device, and a storage medium. Background Art

[0002] In the prior art, the implementation process of the optical touch frame standby wake-up includes: in the standby state, the optical touch frame is still in the working state, and when an object or a writing pen taps the screen, the optical touch frame receives a signal to end the standby state. This method is very common, but sometimes it limits actual use. For example, in large-screen blackboard products, the screen is used for display. When the screen backlight is turned off, it can also be used for writing. At this time, it is no different from an actual ordinary blackboard. At this time, there is a contradiction for the optical touch blackboard, that is, it is hoped that the optical touch wake-up function will be retained in the standby state, but it is not hoped that the wake-up function will be triggered when writing in the standby state. Therefore, how to maintain the standby state of the device during the writing process is an urgent problem to be solved. Summary of the invention

[0003] In view of this, the present invention provides a state control method of a touch display device, a touch display device and a storage medium, which can achieve maintaining the standby state of the touch display device during the writing process.

[0004] In a first aspect, an embodiment of the present invention provides a state control method for a touch display device, the method comprising:

[0005] When the touch display device is in a standby state, receiving a touch operation, wherein the touch operation is an operation of a touch object touching the touch display device;

[0006] Obtaining a current light intensity value collected by a light intensity sensor in the touch display device;

[0007] When the current light intensity value is not equal to the preset light intensity value and the duration is longer than the preset duration, the touch display device is kept in the standby state and enters the writing state.

[0008] In a second aspect, an embodiment of the present invention further provides a touch display device, the touch display device comprising:

[0009] Infrared emitting light source, transparent glass screen, light intensity sensor, optical touch frame and display panel;

[0010] The transparent glass screen is located below the optical touch frame; the light intensity sensor is located on one side of the transparent glass screen, and the infrared light source is located on the other side of the transparent glass screen relative to the light intensity sensor; the display panel is located below the transparent glass screen;

[0011] The incident angle of the infrared light generated by the infrared emitting light source propagating from the transparent glass screen to the air is greater than a preset critical angle, wherein the preset critical angle is used to make the infrared light generated by the infrared emitting light source have a total reflection angle in the transparent glass screen;

[0012] The infrared light generated by the infrared emitting light source propagates to the transparent glass screen and is reflected inside the transparent glass screen at the incident angle until it propagates to the light intensity sensor, so that the light intensity sensor collects the received infrared light and obtains the current light intensity value.

[0013] In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the state control method of the touch display device as described in any of the above embodiments is implemented.

[0014] The embodiments of the present invention receive a touch operation when the touch display device is in a standby state, the touch operation being an operation of a received touch object touching the touch display device; obtain a current light intensity value collected by a light intensity sensor in the touch display device; and maintain the standby state of the touch display device and enter a writing state when the current light intensity value is not equal to a preset light intensity value and the duration of the light intensity value is greater than the preset duration, thereby maintaining the standby state of the touch display device during the writing process.

[0015] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a flow chart of a state control method of a touch display device provided by an embodiment of the present invention;

[0018] Figure 2It is a schematic diagram of the configuration of the incident angle of an infrared ray propagating from a transparent glass screen to air provided by an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of another configuration of the incident angle of infrared light propagating from a transparent glass screen to air provided by an embodiment of the present invention;

[0020] Figure 4 is a flow chart of another state control method of a touch display device provided by an embodiment of the present invention;

[0021] Figure 5 is a structural block diagram of a touch display device provided by an embodiment of the present invention;

[0022] Figure 6 This is a structural block diagram of another touch display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be understood that the numbers used in this way are interchangeable where appropriate, so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein. In addition, the terms "comprises" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, or devices.

[0025] In one embodiment, Figure 1 1 is a flow chart of a state control method of a touch display device provided by an embodiment of the present invention. This embodiment is applicable to the case where a writing function is started while maintaining the standby state of the touch display device. This embodiment can be executed by the touch display device. The touch display device can be a device such as an electronic whiteboard that can be configured with a touch display function and / or a writing function. Figure 1 As shown, this embodiment includes the following steps:

[0026] S110: When the touch display device is in a standby state, receiving a touch operation, where the touch operation is an operation of a received touch object touching the touch display device.

[0027] Among them, the touch display device has the related characteristics of fast response speed, convenient use, high precision, relatively sensitive touch, etc. In the actual operation process, the user can touch the touch display device through the touch object to realize the related operations of the touch display device.

[0028] It should be noted that the touch display device can be in a variety of different states, such as standby state, wake-up state, and writing state. Among them, the standby state refers to storing the data of the touch display device in the current running state in the memory, and only powering the memory, while the hard disk, screen, and central processing unit (CPU) and other components are all stopped; the wake-up state refers to starting the power supply of the hard disk, screen, and CPU of the touch display device, and they are all in working state; the writing state refers to starting the writing function of the touch display device. It can be understood that the standby state and the wake-up state are two relative states, that is, the touch display device can only be in one of the standby state and the wake-up state. In this embodiment, the touch display device may include an infrared light source, a transparent glass screen, a light intensity sensor, an optical touch frame, and a display panel. Among them, the transparent glass screen is located below the optical touch frame; the light intensity sensor is located on one side of the transparent glass screen, and the infrared light source is located on the other side of the transparent glass screen relative to the light intensity sensor; the display panel is located below the transparent glass screen. It should be noted that in order to ensure that the infrared light emitted by the infrared light source can be accurately transmitted to the light intensity sensor, so that the light intensity sensor can collect the light intensity value corresponding to the received infrared light, the position of the light intensity sensor is relative to the position of the infrared light source. For example, assuming that the infrared light source is located on the left side of the transparent glass screen, the light intensity sensor is located on the right side of the transparent glass screen; correspondingly, assuming that the infrared light source is located on the right side of the transparent glass screen, the light intensity sensor is located on the left side of the transparent glass screen.

[0029] It should be noted that the touch display device also includes a processor, which can be a configuration independent processor, and the processor included can be a microcontroller unit (MCU). Exemplarily, assuming that the touch object is an oil pen, the oil pen can be used to write on the transparent glass screen, and the corresponding oil handwriting can be displayed on the transparent glass screen. In the actual operation process, the transparent glass screen can be a glass screen using different glass materials. Of course, in order to ensure the normal use of the display function of the touch display device, it is necessary to ensure that the material of the glass screen cannot block the display of the display panel, that is, the display content on the display panel can be through the transparent glass screen, so that the user can accurately watch it. In this embodiment, the touch display device can receive the user's touch operation when the touch display device is in a standby state, that is, receive the user's touch operation on the touch display device through the touch object. Among them, the touch object can be an object that can produce oil handwriting such as an oil pen or an ink pen; it can also be an object such as a user's finger; it can also be an object such as a stylus, which is not limited to this. Of course, when different touch objects are used, the response signal generated by the touch display device is also different.

[0030] The touch operation can be understood as the related operation performed by the user on the touch display device through the touch object. For example, the touch operation can be the related operation of writing on the touch display screen using the touch object; it can also be the operation of clicking on the touch display screen using the touch object; it can also be other operations on the touch display screen using the touch object, and this embodiment does not limit this.

[0031] In one embodiment, the touch object includes one of the following: an oil pen; an ink pen.

[0032] In this embodiment, an oil pen or ink pen can be used to perform corresponding touch operations on the touch display device, such as writing operations or point touch operations. It can be understood that the writing handwriting on the touch display device can be oily or ink handwriting produced by using an oil pen or ink pen. Of course, when the pen head of the writing pen is made of different materials, the presentation method of the writing handwriting is also different accordingly.

[0033] S120: Obtain a current light intensity value collected by a light intensity sensor in the touch display device.

[0034] In this embodiment, the light intensity sensor can be understood as a device for sensing the intensity of light and measuring the light intensity value. It can be understood that the light intensity sensor can measure the relative intensity of light under different light sources, and detect the light intensity to study the light and dark changes of different light sources. It can be understood that the light intensity values ​​detected by the light intensity sensor are different for light of different intensities.

[0035] In this embodiment, the current light intensity value can be understood as the light intensity value of the infrared light currently received collected by the light intensity sensor when the touch display device receives a touch operation. It should be noted that the current light intensity value is used to characterize whether there is an oily handwriting on the current touch display device. It can be understood that when there is an oily handwriting on the touch display device, the light intensity value collected by the light intensity sensor is different from the light intensity value collected by the light intensity sensor when there is no oily handwriting on the touch display device.

[0036] In an embodiment, in addition to the light intensity sensor, the touch display device may also include an infrared emitting light source, a transparent glass screen, an optical touch frame and a display panel. The infrared emitting light source can be used to propagate the generated infrared light to the transparent glass screen, and reflect it at an incident angle in the transparent glass screen until it propagates to the light intensity sensor, so that the light intensity sensor collects the received infrared light and obtains the current light intensity value. The optical touch frame includes: an infrared emitting light bar, an infrared receiving light bar and a frame. In an embodiment, the infrared emitting light bar is used to generate and emit infrared light, and receive and sense the infrared light emitted by the infrared emitting light bar through the infrared receiving light bar. The infrared emitting light bar and the infrared receiving light bar are respectively embedded on opposite sides of the frame.

[0037] In this embodiment, the infrared emitting light source continuously generates infrared light, which is transmitted to the transparent glass screen and reflected in the transparent glass screen at a pre-configured incident angle, and the incident angle of the infrared light generated by the infrared emitting light source from the transparent glass screen to the air is greater than the preset critical angle (i.e., the angle that satisfies the total reflection of the infrared light in the transparent glass screen), so that the infrared light can achieve total reflection in the transparent glass screen. Total reflection can be understood as when light enters a medium with a higher refractive index from a medium with a lower refractive index, if the incident angle is greater than a certain critical angle, the refracted light will disappear, and all the incident light will be reflected without entering the medium with a low refractive index. Exemplarily, glass is a high refractive index medium, and when infrared light is transmitted from glass to air at an incident angle greater than the preset critical angle, total reflection can be achieved in the optical system composed of glass and air.

[0038] In this embodiment, if there is no writing produced by an oily pen or ink pen on the touch display device at this time, the infrared light generated by the infrared light source can be propagated in a total reflection manner in the transparent glass screen, and then the infrared light is propagated to the light intensity sensor. At this time, the light intensity value can be obtained by the light intensity sensor, and the acquired light intensity value is transmitted to the MCU chip; if there is writing produced by an oily pen or ink pen on the touch display device at this time, the scratches left by the writing produced by the oily pen or ink pen cause the surface of the writing place to be uneven, so that the infrared light generated by the infrared light source is diffusely reflected in the transparent glass screen, that is, part of the infrared light is refracted outside the transparent glass screen, and part of it is reflected in the transparent glass screen until it is propagated to the light intensity sensor, and the light intensity value of the currently received infrared light is collected by the light intensity sensor.

[0039] Figure 2 FIG. 1 is a schematic diagram of the configuration of the incident angle of infrared light propagating from a transparent glass screen to air provided by an embodiment of the present invention. Figure 2 As shown, in order to ensure that the infrared light generated by the infrared emitting light source does not refract when propagating from the air to the transparent glass screen, the infrared emitting light source can be close to one side of the transparent glass screen, so that the incident angle θ of the infrared light propagating from the transparent glass screen to the air is greater than the preset critical angle, so that the infrared light in the transparent glass screen can be totally reflected in the transparent glass screen.

[0040] Figure 3 FIG. 1 is another schematic diagram of the configuration of the incident angle of infrared light propagating from a transparent glass screen to air provided by an embodiment of the present invention. Figure 3 As shown, when the infrared emitting light source is not in close contact with one side of the transparent glass screen, when the infrared light generated by the infrared emitting light source propagates from the air to the transparent glass screen, it is refracted in the transparent glass screen, and the complementary angle (i.e., θ) of the refraction angle β needs to be greater than the preset critical angle to ensure that the infrared light propagating from the transparent glass screen to the air can be totally reflected in the transparent glass screen. Among them, the complementary angle θ is the incident angle of the infrared light propagating from the transparent glass screen to the air. Correspondingly, the light intensity sensor for collecting infrared light can also be in close contact with one side of the transparent glass screen to avoid the light intensity value of the infrared light becoming smaller after the infrared light propagates from the transparent glass screen to the air. In addition, the light intensity sensor is in close contact with one side of the transparent glass screen, and is arranged relative to the side of the infrared emitting light source in close contact with the transparent glass screen.

[0041] It should be noted that in order to ensure that the incident angle θ of the infrared light transmitted from the transparent glass screen to the air is greater than the preset critical angle, the relative angle between the infrared emitting light source and the transparent glass screen needs to be set, which can be adjusted according to actual conditions. Figure 2 and Figure 3The relative positions between the mid-infrared emitting light source and the transparent glass screen are different, and accordingly, the relative angles between the infrared emitting light source and the transparent glass screen are also different.

[0042] It should be noted that the incident angle of the infrared light source can be adjusted so that the reflection points of the infrared light generated by the infrared light source in the transparent glass screen are more dense, thereby ensuring that there are reflection points at as many positions as possible on the transparent glass screen. Since total reflection will have many reflection points on the surface of the transparent glass screen, it can be ensured that when there are handwritings produced by an oil pen or ink pen on the transparent glass screen, it can interfere with the reflection process, thereby causing the light intensity value collected by the light intensity sensor to change; of course, the incident angle of the infrared light generated by the infrared light source from the transparent glass screen to the air needs to meet the angle value of total reflection. Since the light in the environment may cause certain interference to the total reflection process, the wavelength of the infrared light generated by the infrared light source can be set to eliminate the interference caused by the external ambient light. For example, the light generated by the remote control is an infrared ray with a wavelength of 980nm to reduce the interference caused by the external ambient light; it is also possible to make some adjustments to the structure by filtering or shielding, for example, a transmission sheet or filter can be added in front of the light intensity sensor to allow the infrared light generated by the infrared light source to propagate to the light intensity sensor as much as possible. Among them, the transmission plate refers to a plate that allows light of a certain wavelength to pass through, which is equivalent to filtering out light of other wavelengths. That is, the transmission plate can also be understood as a filter.

[0043] S130: When the current light intensity value is not equal to the preset light intensity value and the duration is longer than the preset duration, keep the touch display device in the standby state and enter the writing state.

[0044] Among them, the preset light intensity value refers to the light intensity value obtained by collecting the infrared light received by the light sensor when there is no writing on the transparent glass screen of the touch display device. The duration refers to the duration of the inequality between the current light intensity value and the preset light intensity value; the preset duration refers to the total duration threshold for the inequality between the current light intensity value and the preset light intensity value. In an embodiment, the preset duration is used to characterize the duration of whether the touch display device is falsely triggered. It can be understood that when the duration is less than the preset duration, the touch display device may be falsely triggered, then the standby state of the touch display device continues to be maintained, and the writing function of the touch display device is not started. Exemplarily,. The preset duration can be timed in units of 1 second, 1 millisecond or 1 minute, and can be configured accordingly according to actual conditions, and this embodiment is not limited here.

[0045] In this embodiment, after obtaining the current light intensity value collected by the light intensity sensor in the touch display device, the current light intensity value is compared with the preset light intensity value, and the total duration of the two being unequal is obtained. When the current light intensity value is unequal to the preset light intensity value and the duration is greater than the preset duration, the standby state of the touch display device can be maintained and the writing function of the touch display device can be started, that is, the writing state is entered.

[0046] Of course, the touch display device may be triggered by mistake. For example, when the handwriting of a ballpoint pen or ink pen falls on the touch display device and the user erases the handwriting, the light intensity sensor can detect that the current light intensity value is not equal to the preset light intensity value, but the duration of the inequality is less than the preset duration, then the touch display device is considered to be triggered by mistake.

[0047] The embodiments of the present invention receive a touch operation when the touch display device is in a standby state, the touch operation being an operation of a received touch object touching the touch display device; obtain a current light intensity value collected by a light intensity sensor in the touch display device; and maintain the standby state of the touch display device and enter a writing state when the current light intensity value is not equal to a preset light intensity value and the duration of the light intensity value is greater than the preset duration, thereby maintaining the standby state of the touch display device during the writing process.

[0048] In one embodiment, the state control method of the touch display device further includes:

[0049] When the current light intensity value is not equal to the preset light intensity value and the duration is less than the preset duration, or when the current light intensity value is equal to the preset light intensity value, the standby state of the touch display device is ended and the touch display device is awakened.

[0050] In this embodiment, there are two situations that can end the standby state of the touch display device and wake up the touch display device. One is: the current light intensity value is not equal to the preset light intensity value, and the duration is less than the preset duration; the other is: the current light intensity value is equal to the preset light intensity value.

[0051] In an embodiment, when the touch display device receives a touch operation and the current light intensity value is equal to the preset light intensity value, it indicates that the user does not trigger the touch display device by mistake, but really wants to wake up the touch display device to start the display function of the touch display device. Exemplarily, when the touch object is a user's finger or a stylus, the handwriting produced by the user's finger or the stylus cannot affect the current light intensity value of the infrared light collected and received by the light intensity sensor, that is, the current light intensity value is equal to the preset light intensity value. Among them, the stylus refers to a small pen-shaped tool used to input commands to a device with a touch screen. For example, the stylus can be suitable for a resistive screen.

[0052] It should be noted that the touch display device may be awakened by a touch object performing related operations on the touch display device, or by pressing a power button of the touch display device, which is not limited in this embodiment.

[0053] In one embodiment, the wake-up method of the touch display device further includes: a power button method;

[0054] Correspondingly, the state control method of the touch display device also includes:

[0055] Upon receiving the power button trigger operation, the touch display device is directly woken up.

[0056] The power button can be understood as a physical power button or power button configured by the touch display device. The user can directly wake up the touch display device by directly pressing the power button to end the standby state of the touch display device and enter the writing state of the touch display device.

[0057] In this embodiment, the touch display device may be awakened by a power button. When a power button trigger operation is received, the touch display device may be directly awakened.

[0058] In one embodiment, Figure 4 It is a schematic diagram of another state control method of a touch display device provided by an embodiment of the present invention. Exemplarily, this embodiment can be applied in scenarios of multi-person conversations such as education and meetings to achieve maintaining the standby state of the touch display device during the writing process. In the embodiment, it is assumed that the light intensity data A1 represents a preset light intensity value, and the light intensity data A2 represents the current light intensity value. Among them, the touch display device includes: an infrared reflection device, an optical touch frame, a transparent glass screen and a display panel; wherein the infrared reflection device includes: an infrared emitting light source and a light intensity sensor. In actual applications, when the touch display device is in standby mode, the user uses an oil pen to write on the screen to trigger the optical touch frame. Specifically, the implementation process of state control includes the following steps:

[0059] S210: The touch display device is in a standby state.

[0060] S220: Whether the optical touch frame is triggered, if so, execute step S230; if not, execute S260.

[0061] In the embodiment, if the optical touch frame is triggered, it is necessary to continue to determine whether the infrared reflection device is triggered; if the optical touch frame is not triggered, the touch display device is kept in standby mode. It should be noted that the infrared emission light bar in the optical touch frame continues to emit infrared light, and the infrared reception light bar continues to receive infrared light, but once an object blocks the emission and reception process of infrared light, the optical touch frame sends a signal to the system-on-chip (SoC) of the touch display device, indicating that the optical touch frame is triggered.

[0062] S230: Whether the infrared reflection device is triggered, if so, execute step S240; if not, execute step S260.

[0063] Among them, the infrared emitting light source in the infrared reflection device is continuously in a state of emitting infrared light, and the light intensity sensor is continuously in a state of receiving infrared light. However, once there are oily handwritings on the transparent glass screen, the infrared reflection device sends a signal to the SoC of the touch display device, indicating that the infrared reflection device is triggered.

[0064] In an embodiment, a light intensity sensor is used to collect in advance the light intensity value when there is no oily handwriting on the transparent glass screen, which is recorded as A1, and the light intensity value A1 is transmitted to the MCU chip; when handwriting such as an oily pen is written on the glass screen, the infrared light will be scattered when it is irradiated on the handwriting due to the rough scratches of the oily handwriting, and the scattered light will be transmitted together with the infrared light to reach the light intensity sensor, and the light intensity value A2 obtained by the light intensity sensor at this time is recorded, and the light intensity value A2 is transmitted to the MCU chip, and step S240 is executed; if the infrared reflection device is not triggered, S260 is executed to end the standby state of the touch display device.

[0065] S240: Check whether A2 is not equal to A1 and whether the duration is greater than the preset duration. If so, execute S250; if not, execute S260.

[0066] When both the optical touch frame and the infrared reflection device are triggered, it is determined whether the light intensity value A1 is not equal to the light intensity value A2, and whether the duration of the inequality is greater than the preset duration. If A1 and A2 are not equal, and the duration is greater than the preset duration, the standby state of the touch display device is maintained and the writing state is entered; if A1 and A2 are equal, or A and A2 are not equal and the duration is less than the preset duration, the standby state of the touch display device is terminated.

[0067] S250, maintain the standby state and start the writing function.

[0068] In the embodiment, when it is determined that A2 and A1 are not equal and the duration is longer than the preset duration, the writing function of the touch display device can be activated, that is, the touch display device is equivalent to an ordinary whiteboard, and writing is performed on the surface of the glass screen. Since the writing remains on the screen before being erased, the obtained A2 and A1 are not equal and the duration is longer than the preset duration until the writing on the touch display device is erased.

[0069] S260: End the standby state of the touch display device.

[0070] In this embodiment, the total reflection principle is used to realize writing recognition. The principle is simple, and the glass screen that realizes total reflection is transparent, that is, the structure is light-transmitting, which does not affect the display of the whole device.

[0071] In one embodiment, Figure 5 : is a structural block diagram of a touch display device provided by an embodiment of the present invention. The touch display device is suitable for starting a writing function while maintaining a standby state of the touch display device. The touch display device can be implemented by hardware / software and can be configured in a server to implement the state control method of the touch display device in an embodiment of the present invention. Figure 5 As shown, the touch display device includes: an infrared emission light source 310, a transparent glass screen 330, a light intensity sensor 350, an optical touch frame 340 and a display panel 320;

[0072] The transparent glass screen 330 is located below the optical touch frame 340; the light intensity sensor 350 is located on one side of the transparent glass screen 330, and the infrared light source 310 is located on the other side of the transparent glass screen 330 relative to the light intensity sensor 350; the display panel 320 is located below the transparent glass screen 330;

[0073] The incident angle of the infrared light generated by the infrared emitting light source 310 propagating from the transparent glass screen 330 to the air is greater than a preset critical angle, wherein the preset critical angle is used to make the infrared light generated by the infrared emitting light source 310 fully reflected in the transparent glass screen 330;

[0074] The infrared light generated by the infrared emitting light source 310 propagates to the transparent glass screen 330 and is reflected at the incident angle inside the transparent glass screen 330 until it propagates to the light intensity sensor 350, so that the light intensity sensor 350 collects the received infrared light and obtains the current light intensity value.

[0075] In one embodiment, when the transparent glass screen 330 can achieve total reflection, the transparent glass screen 330 in the touch display device can be a built-in glass screen in the touch display device, that is, a built-in tempered glass screen for protecting the display panel. In one embodiment, if the built-in transparent glass screen 330 in the touch display device cannot achieve the entire process of total reflection, an additional layer of transparent glass screen is required to achieve total reflection of infrared light. Among them, the additional transparent glass screen needs to be located below the built-in tempered glass screen of the touch display device.

[0076] In this embodiment, the light intensity sensor 350 is located on one side of the transparent glass screen 330, the infrared light source 310 is located on the other side of the transparent glass screen 330, the infrared light source 310 and the light intensity sensor 350 are arranged opposite to each other, and the transparent glass screen 330 is located below the optical touch frame 340. It can be understood that the positions of the light intensity sensor 350 and the infrared light source 310 are located on opposite sides of the transparent glass screen 330 (for example, the light intensity sensor 350 is located on the left side of the transparent glass screen 330, and the infrared light source 310 is located on the right side of the transparent glass screen 330), so that the handwriting written on the touch display device can be effectively detected. If it is not on both sides, such as the infrared light source 310 is below, there may be a problem that the infrared light source 310 cannot be detected or the range of the detected infrared light source 310 is small, resulting in inaccurate coverage; if the light intensity sensor 350 is located in the middle, the sensing range of the light intensity sensor 350 may be reduced, resulting in inaccurate sensing range.

[0077] In this embodiment, the number of light intensity sensors 350 configured in the touch display device is related to the screen size of the touch display device and the sensing range of the light intensity sensor 350. Among them, the screen size of the touch display device refers to the size of the side where the light intensity sensor 350 is located. In the embodiment, when the screen size of the touch display device is large, but the sensing range of the light intensity sensor 350 cannot cover the entire range of the screen size, another light intensity sensor 350 can be additionally configured. It can be understood that when the sensing range of the light intensity sensor 350 is certain, the larger the screen size on the side where the light intensity sensor 350 is located, the more light intensity sensors 350 will be configured in the touch display device; on the contrary, the smaller the screen size on the side where the light intensity sensor 350 is located, the fewer light intensity sensors 350 may be configured in the touch display device. Of course, the number of light intensity sensors 350 configured in the touch display device is also related to the perception range of the light intensity sensor 350, that is, when the screen size of the touch display device is constant, the smaller the perception range of the light intensity sensor 350, the more light intensity sensors 350 are configured in the touch display device; and, when the screen size of the touch display device is constant, the larger the perception range of the light intensity sensor 350, the fewer light intensity sensors 350 are configured in the touch display device.

[0078] In one embodiment, the optical touch frame 340 includes: an infrared transmitting light bar, an infrared receiving light bar and a frame;

[0079] The infrared transmitting light bar and the infrared receiving light bar are both embedded in the frame; and the installation positions of the infrared transmitting light bar and the infrared receiving light bar are relative.

[0080] In one embodiment, the touch display device further includes: a processor 360 and a memory 370; wherein the memory 360 stores a computer program, and the computer program is suitable for being loaded by the processor 370 and executing the method steps in any embodiment.

[0081] The processor 370 in the touch display device may be one or more processors. Figure 5 Taking a processor 370 as an example, the infrared light source 310, the transparent glass screen 330, the light intensity sensor 350, the optical touch frame 340, the display panel 320, the processor 370 and the memory 360 in the touch display device can be connected through a bus or other means. Figure 5 The example of connecting through bus is taken in the following.

[0082] The memory 360 in the touch display device is a computer-readable storage medium that can be used to store one or more programs, which can be software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the state control method of the touch display device provided in the embodiment of the present invention. The processor 370 executes various functional applications and data processing of the cloud server by running the software programs, instructions, and modules stored in the memory 360, that is, the user authority control method in the above method embodiment is implemented.

[0083] The memory 360 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory 360 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 360 may further include a memory remotely arranged relative to the processor 370, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0084] Furthermore, when one or more programs included in the above-mentioned touch display device are executed by one or more processors 370, the program performs the following operations: when the touch display device is in a standby state, receiving a touch operation, wherein the touch operation is an operation in which a received touch object touches the touch display device; obtaining a current light intensity value collected by a light intensity sensor in the touch display device; and when the current light intensity value is not equal to a preset light intensity value and the duration is greater than a preset duration, maintaining the standby state of the touch display device and entering a writing state.

[0085] In one embodiment, Figure 6 FIG. 1 is a structural block diagram of another touch display device provided by an embodiment of the present invention. Figure 6As shown, a transparent glass screen 420 is placed under the optical touch frame 430, and an infrared emitting light source 410 is provided at one end of the plane, emitting infrared rays into the transparent glass screen 420, and reflecting in the transparent glass screen 420 at an incident angle greater than a preset critical angle, that is, when there is no writing, the infrared light generated by the infrared emitting light source 410 propagates in the transparent glass screen 420 in a total reflection manner, and finally incident on the light intensity sensor 440 at the other end. At this time, the data obtained by the light intensity sensor 440 is A1 and the data is transmitted to the MCU chip; when writing such as an oily pen is written on the transparent glass screen of the touch display device, at this time, due to the rough scratches of the oily handwriting, the infrared light generated by the infrared emitting light source 410 will be scattered when irradiated on the handwriting, and the scattered light will propagate with the infrared light to reach the light intensity sensor 440, and the data obtained by the light intensity sensor 440 is A2. When the MCU internally determines that A2≠A1, it can be determined that writing is being done on the transparent glass screen 420 at this time. Since the handwriting remains on the transparent glass screen 420 before being erased, the obtained A2 will always be different from A1 until the handwriting is erased.

[0086] In one embodiment, the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, a state control method of a touch display device provided by the present invention is implemented. The method includes:

[0087] When the touch display device is in a standby state, receiving a touch operation, wherein the touch operation is an operation of a touch object touching the touch display device;

[0088] Obtaining a current light intensity value collected by a light intensity sensor in the touch display device;

[0089] When the current light intensity value is not equal to the preset light intensity value and the duration is longer than the preset duration, the touch display device is kept in the standby state and enters the writing state.

[0090] The computer storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (Random Access Memory, RAM), a read-only memory (Read-Only Memory, ROM), an erasable programmable read-only memory (ErasableProgrammable ROM, EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0091] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0092] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0093] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or combinations thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0094] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A state control method for a touch display device, characterized in that: include: When the touch display device is in a standby state, receiving a touch operation, wherein the touch operation is an operation of a touch object touching the touch display device; Obtaining a current light intensity value collected by a light intensity sensor in the touch display device; When the current light intensity value is not equal to the preset light intensity value and the duration is longer than the preset duration, the touch display device is kept in the standby state and enters the writing state; wherein the preset light intensity value is the light intensity value obtained by collecting the infrared light received by the light sensor when there is no writing on the transparent glass screen of the touch display device; The touch display device comprises a light intensity sensor, an infrared light source, a transparent glass screen, an optical touch frame and a display panel; the transparent glass screen is located below the optical touch frame; the light intensity sensor is located on one side of the transparent glass screen, and the infrared light source is located on the other side of the transparent glass screen relative to the light intensity sensor; the display panel is located below the transparent glass screen; The incident angle of the infrared light generated by the infrared emitting light source propagating from the transparent glass screen to the air is greater than a preset critical angle, wherein the preset critical angle is used to make the infrared light generated by the infrared emitting light source have a total reflection angle in the transparent glass screen; The method of obtaining the current light intensity value collected by the light intensity sensor in the touch display device includes: the infrared light generated by the infrared emitting light source propagates to the transparent glass screen, and is reflected in the transparent glass screen at the incident angle until it propagates to the light intensity sensor, so that the light intensity sensor collects the received infrared light and obtains the current light intensity value.

2. The method according to claim 1, characterized in that The method further comprises: When the current light intensity value is not equal to the preset light intensity value and the duration is less than the preset duration, or when the current light intensity value is equal to the preset light intensity value, the standby state of the touch display device is ended and the touch display device is woken up.

3. The method according to claim 1, characterized in that The wake-up method of the touch display device also includes: a power button method; Accordingly, the method further includes: Upon receiving a power button trigger operation, the touch display device is directly awakened.

4. The method according to any one of claims 1 to 3, characterized in that: The touch object includes one of the following: an oil pen; an ink pen.

5. A touch display device, characterized in that: include: Infrared emitting light source, transparent glass screen, light intensity sensor, optical touch frame and display panel; The transparent glass screen is located below the optical touch frame; the light intensity sensor is located on one side of the transparent glass screen, and the infrared light source is located on the other side of the transparent glass screen relative to the light intensity sensor; the display panel is located below the transparent glass screen; The incident angle of the infrared light generated by the infrared emitting light source propagating from the transparent glass screen to the air is greater than a preset critical angle, wherein the preset critical angle is used to make the infrared light generated by the infrared emitting light source have a total reflection angle in the transparent glass screen; The infrared light generated by the infrared emitting light source propagates to the transparent glass screen and is reflected in the transparent glass screen at the incident angle until it propagates to the light intensity sensor, so that the light intensity sensor collects the received infrared light and obtains the current light intensity value; The touch display device further includes: a processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the method steps as claimed in any one of claims 1 to 4.

6. The touch display device according to claim 5, characterized in that: The optical touch frame includes: an infrared transmitting light bar, an infrared receiving light bar and a frame; The infrared emitting light bar and the infrared receiving light bar are both embedded in the frame; and the installation positions of the infrared emitting light bar and the infrared receiving light bar are opposite.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the state control method of the touch display device as described in any one of claims 1 to 4 is implemented.

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