USB flash disk device and system integrated with page turning function

Abstract

The invention discloses a USB flash disk device and system integrated with a page turning function, the USB flash disk device comprises a shell, a USB storage module, a 2.4 GHz / Bluetooth dual-mode wireless controller, a power supply module and a control module, the USB storage module, the 2.4 GHz / Bluetooth dual-mode wireless controller, the power supply module and the control module are packaged in the shell, the USB storage module is provided with a USB interface used for being connected with external equipment, the USB interface is exposed out of one end of the shell, and the control module is connected with the 2.4 GHz / Bluetooth dual-mode wireless controller. The USB storage module performs data transmission and power input with external equipment through a USB interface; and the 2.4 GHz / Bluetooth dual-mode wireless controller is electrically connected with the control module. Therefore, the USB storage module and the 2.4 G / Bluetooth controller are combined into a whole through hardware integration, the equipment carrying amount is reduced by 50%, equipment redundancy is solved, parallel signal transmission is achieved through HID composite drive, plug-and-control experience is brought, endurance is prolonged through dynamic power consumption management, power supply is simplified, functions are expanded, and teaching demonstration fluency and reliability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of computer peripheral devices, and in particular to a USB flash drive device and system with integrated page turning function. Background Art

[0002] In teaching, lectures, and other presentation scenarios, teachers and speakers often need to use USB flash drives to store presentation files, such as PowerPoint presentations and documents, and also need a wireless presenter to turn pages of the presentation content. However, this existing method has many drawbacks.

[0003] First, there is a serious problem of device redundancy. Teachers and speakers need to carry both a USB flash drive and a wireless presenter, which increases the burden of carrying and makes it easy for one of the devices to be lost, affecting the normal progress of the presentation.

[0004] Secondly, the operation is obviously fragmented. During the presentation, the USB flash drive and wireless presenter need to be operated separately. For example, insert the USB flash drive to read the file, and then pick up the wireless presenter to turn the page. This operation mode is not coherent, which reduces the fluency of the presentation and easily distracts the presenter's attention.

[0005] Finally, power management is complex. USB flash drives typically rely on external devices (such as computers) for power, while wireless presenters typically use built-in batteries. This requires separate power management for both devices, such as replacing or charging the wireless presenter's battery, which increases the complexity and inconvenience of use. Furthermore, if the wireless presenter is low on power, the page-turning function may fail during a presentation, affecting the presentation's effectiveness.

[0006] Therefore, there is an urgent need for an integrated device and system that can solve the above problems. Summary of the Invention

[0007] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0008] To this end, the first purpose of this application is to provide a USB flash drive device and system with integrated page-turning function. By encapsulating the USB storage module and 2.4GHz / Bluetooth dual-mode wireless controller in a single device, hardware integration is achieved, the device carrying volume is reduced by 50%, and the device redundancy problem is solved.

[0009] The second purpose of this application is to provide a U disk device and system with integrated page turning function, which realizes parallel transmission of storage and control signals by developing HID composite device driver, realizes seamless plug-and-control operation experience, and solves the problem of operation fragmentation.

[0010] The third purpose of this application is to provide a USB flash drive device and system with integrated page-turning function, which adopts dynamic power consumption management technology to automatically switch between USB power supply and built-in battery power supply based on the usage scenario, thereby extending the overall battery life and simplifying power supply management.

[0011] The fourth purpose of this application is to provide a USB flash drive device and system with integrated page-turning function, expanded laser marking, classroom recording and emergency backup functions, which significantly improve the fluency and reliability of teaching demonstrations.

[0012] To achieve the above-mentioned objectives, the first embodiment of the present application proposes a USB flash drive device and system with an integrated page-turning function, comprising a housing, a USB storage module encapsulated in the housing, a 2.4 GHz / Bluetooth dual-mode wireless controller, a power supply module, and a control module, wherein the USB storage module is provided with a USB interface for connecting to an external device, the USB interface being exposed at one end of the housing, and the USB storage module performs data storage and power input with the external device through the USB interface; the 2.4 GHz / Bluetooth dual-mode wireless controller is electrically connected to the control module, and is used to establish a communication connection with a presentation device via a 2.4 GHz wireless signal or a Bluetooth signal and send a page-turning control signal; the power supply module includes a USB power supply unit electrically connected to the USB interface, and a built-in battery unit electrically connected to the control module; the control module is used to control the power supply module to automatically switch between power supply from the USB power supply unit and power supply from the built-in battery unit according to whether the device is connected to an external device via the USB interface; the device realizes parallel transmission of data storage signals of the USB storage module and control signals of the 2.4 GHz / Bluetooth dual-mode wireless controller through an HID composite device driver.

[0013] According to an embodiment of the present application, a USB flash drive device and system with integrated page-turning function is provided. The present invention integrates the USB storage module and the 2.4G / Bluetooth controller into one through hardware integration, reducing the device carrying volume by 50%, solving device redundancy, and utilizing HID composite drivers to realize parallel signal transmission, thus bringing a plug-and-control experience. Dynamic power consumption management extends battery life, simplifies power supply, and expands functions to improve the fluency and reliability of teaching demonstrations.

[0014] In addition, the USB flash drive device and system with integrated page turning function proposed in the present application may also have the following additional technical features:

[0015] In one embodiment of the present application, a laser marking module is further provided on the housing, wherein the laser marking module includes a laser emitter and a laser control switch, wherein the laser emitter is electrically connected to the control module, and the laser control switch is exposed on the surface of the housing and electrically connected to the control module, and is used to control the opening and closing of the laser emitter and the direction of laser projection.

[0016] In one embodiment of the present application, a classroom recording module is also included, which includes a microphone arranged on the surface of the shell, and an audio encoding chip electrically connected to the microphone. The audio encoding chip is electrically connected to the USB storage module and is used to encode the sound signal collected by the microphone into digital audio data and store it in the USB storage module.

[0017] In one embodiment of the present application, an emergency backup module is also included, which includes a status monitoring unit and a data backup unit arranged in the control module. The status monitoring unit is used to monitor the power status of the built-in battery unit and the abnormal working signal of the device in real time. The data backup unit is electrically connected to the USB storage module and is used to automatically trigger the backup storage of the data in the USB storage module when the status monitoring unit detects that the power is lower than a preset threshold or an abnormal working signal is detected.

[0018] In one embodiment of the present application, the shell is rectangular, the USB interface is arranged at the front end of the shell, the 2.4GHz / Bluetooth dual-mode wireless controller, the power supply module, the control module, the laser marking module, the classroom recording module and the emergency backup module are all encapsulated in sequence inside the shell along the axial direction of the shell, and the laser control switch and the microphone are arranged on the side surface of the shell.

[0019] In one embodiment of the present application, the 2.4GHz / Bluetooth dual-mode wireless controller adopts a wireless communication chip with model number nRF52832, the control module adopts a microprocessor with model number STM32F103RCT6, and the I / O interface of the STM32F103RCT6 is electrically connected to the communication interface of the nRF52832, the control interface of the USB storage module, the switching control end of the power supply module, the control end of the laser marking module, the audio input and output end of the classroom recording module and the signal input end of the emergency backup module.

[0020] In one embodiment of the present application, a demonstration device used in conjunction with the U disk device is provided with a wireless receiving module that matches the 2.4GHz / Bluetooth dual-mode wireless controller, and the wireless receiving module is used to receive the page turning control signal sent by the 2.4GHz / Bluetooth dual-mode wireless controller. The demonstration device is installed with a HID composite device driver for realizing parallel interaction with the data storage signal of the USB storage module of the U disk device and the control signal of the 2.4GHz / Bluetooth dual-mode wireless controller.

[0021] In one embodiment of the present application, the demonstration device is a computer, a projector or a smart TV, the wireless receiving module is a 2.4GHz wireless receiver or a Bluetooth receiver integrated into the demonstration device, and the HID composite device driver is pre-installed in the operating system of the demonstration device and supports plug-and-play function.

[0022] The advantages of this application compared with the existing technology are:

[0023] (1) By packaging the USB storage module and 2.4GHz / Bluetooth dual-mode wireless controller into a single device, hardware integration is achieved, reducing the device carrying volume by 50% and solving the device redundancy problem.

[0024] (2) By developing HID composite device drivers to achieve parallel transmission of storage and control signals, a seamless plug-and-control operation experience is achieved, solving the problem of operational fragmentation.

[0025] (3) Dynamic power management technology is used to automatically switch between USB power supply and built-in battery power supply based on the usage scenario, which extends the overall battery life and simplifies power supply management.

[0026] (4) The expanded laser marking, classroom recording and emergency backup functions significantly improve the fluency and reliability of teaching demonstrations.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 This is a three-dimensional diagram of a USB flash drive device and system with integrated page turning function according to one embodiment of the present application;

[0030] Figure 2 This is a three-dimensional diagram of a USB flash drive device and system with integrated page turning function according to another embodiment of the present application;

[0031] Figure 3 This is a structural diagram of a USB flash drive device and system with integrated page turning function according to one embodiment of the present application;

[0032] Figure 4 The present invention is a schematic diagram of the control connections of a USB device and system with integrated page turning function according to an embodiment of the present application.

[0033] As shown in the figure: 1. Shell; 2. USB storage module; 3. 2.4GHz / Bluetooth dual-mode wireless controller; 4. Power supply module; 5. Control module; 6. Laser marking module; 7. Classroom recording module; 8. Emergency backup module; 9. Demonstration equipment; 21. USB interface; 41. USB power supply unit; 42. Built-in battery unit; 61. Laser transmitter; 62. Laser control switch; 71. Microphone; 72. Audio encoding chip; 81. Status monitoring unit; 82. Data backup unit; 91. Wireless receiving module. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below. 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 intended to be used to explain the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0035] The following describes a USB flash drive device and system with integrated page turning function according to an embodiment of the present application with reference to the accompanying drawings.

[0036] like Figures 1-4 As shown, a U disk device and system with integrated page turning function in an embodiment of the present application may include a shell 1, and a USB storage module 2, a 2.4GHz / Bluetooth dual-mode wireless controller 3, a power supply module 4 and a control module 5 encapsulated in the shell 1.

[0037] As will be appreciated, USB storage module 2 includes an integrated USB port 21, which is exposed at the front of housing 1 and is used to connect to external devices such as a computer or projector. USB storage module 2 uses USB port 21 to communicate with external devices for data transmission (reading and writing files) and power input (obtaining USB power).

[0038] 2.4GHz / Bluetooth dual-mode wireless controller 3: directly electrically connected to the control module 5 through the circuit, with a built-in 2.4GHz wireless transceiver unit and a Bluetooth communication chip, used to generate page turning control signals (such as "previous page" and "next page" instructions).

[0039] Power supply module 4:

[0040] USB power supply unit 41: electrically connected to the USB interface 21. When the device is plugged into an external device, it obtains 5V power through the USB interface 21 (such as power supplied by a computer USB port).

[0041] Built-in battery unit 42: electrically connected to the control module 5, using a rechargeable lithium battery (such as 300mAh), to provide an independent power source for the device when it is disconnected from external equipment.

[0042] Control module 5: As the core control unit, it is connected to the 2.4GHz / Bluetooth dual-mode wireless controller 3 and the power supply module 4 through circuits, and has a built-in logic judgment chip (such as a microprocessor) for monitoring the connection status of the USB interface 21 and controlling the power supply switching.

[0043] Detailed workflow

[0044] 1. External device connection and data transmission

[0045] When the device is plugged into a computer or other external device via USB port 21:

[0046] The USB storage module 2 establishes a data connection with an external device through the USB interface 21. The external device can directly read the presentation files (such as PPT, documents) in the USB disk or write data to the USB disk.

[0047] The HID composite device driver is enabled: the external device recognizes the device as a composite device and maps two functions:

[0048] Storage device: corresponds to USB storage module 2, used for file access;

[0049] Input device: Corresponding to 2.4GHz / Bluetooth dual-mode wireless controller 3, used to receive page turning control signals (simulating keyboard / mouse commands through the HID protocol).

[0050] Power supply module 4 status: The control module 5 detects that the USB interface 21 is connected to an external device and automatically switches to the USB power supply unit 41 for power supply. At this time, the built-in battery unit 42 is in charging or standby state.

[0051] 2. Generation and transmission of page turning control signals

[0052] When the presenter operates the page turning button on the device:

[0053] The key signal is transmitted to the control module 5, and the control module 5 generates a corresponding page turning instruction (such as "next page").

[0054] The 2.4GHz / Bluetooth dual-mode wireless controller 3 encodes the page turning instruction into a 2.4GHz wireless signal or a Bluetooth signal, and sends it to the presentation device (such as a computer, a projector) via an antenna (built into the wireless controller module).

[0055] After receiving the signal, the presentation device parses the instruction through the HID composite device driver to realize page turning control of the presentation software (such as PowerPoint).

[0056] 3. Dynamic power supply switching mechanism

[0057] USB power supply mode (when plugged into an external device):

[0058] The USB power supply unit 41 obtains power from an external device through the USB interface 21, and preferentially supplies power to the control module 5, the wireless controller 3 and the USB storage module 2, while charging the built-in battery unit 42 (if the battery is not full).

[0059] Built-in battery power supply mode (when external devices are unplugged):

[0060] The control module 5 detects that the USB interface 21 is disconnected and automatically switches to the built-in battery unit 42 for power supply, maintaining the operation of the 2.4GHz / Bluetooth dual-mode wireless controller 3 and the control module 5, ensuring that the wireless page turning function continues to be available (such as when the teacher leaves the podium and moves).

[0061] 4. Principle of parallel signal transmission

[0062] Through the HID composite device driver, the device realizes the parallel transmission of "storage signal" and "control signal":

[0063] Storage signal: The USB storage module 2 transmits file data (such as the data stream when reading a PPT) bidirectionally with an external device through the USB interface 21.

[0064] Control signal: The 2.4GHz / Bluetooth dual-mode wireless controller 3 sends page-turning instructions to the presentation device via a wireless channel, without relying on a USB connection. The two work independently through different channels without interfering with each other.

[0065] In one embodiment of the present application, Figures 1-4 As shown, it also includes a laser marking module 6 arranged on the shell 1. The laser marking module 6 includes a laser emitter 61 and a laser control switch 62. The laser emitter 61 is electrically connected to the control module 5. The laser control switch 62 is exposed on the surface of the shell 1 and is electrically connected to the control module 5, and is used to control the opening and closing of the laser emitter 61 and the direction of laser projection.

[0066] As will be understood, laser emitter 61 utilizes a 650nm wavelength laser diode, housed within the front end of housing 1. Its emission direction maintains an adaptive angle with the demonstration screen, projecting a laser spot. It is electrically connected to the signal output terminal of control module 5 via a wire, receiving on / off and power adjustment commands from control module 5.

[0067] The laser control switch 62 is exposed on the side surface of the shell 1 and is designed as a press button. It is electrically connected to the signal input end of the control module 5 through a wire and is used to send laser operation instructions (such as "on", "off", "adjust brightness") to the control module 5.

[0068] Detailed workflow

[0069] 1. User action trigger

[0070] During the presentation, the demonstrator presses the laser control switch 62:

[0071] The switching action is converted into an electrical signal and transmitted to the control module 5 through a wire.

[0072] 2. Control module 5 signal processing

[0073] After receiving the instruction from the laser control switch 62, the control module 5 executes the following logic:

[0074] On / off control: If an “on” command is received, a high-level signal is sent to the laser emitter 61 to activate the laser diode; if an “off” command is received, a low-level signal is sent to turn off the laser emitter 61.

[0075] On state: the laser emitter 61 emits laser under the drive of the control module 5, and the light spot is projected onto the demonstration screen to mark the key content.

[0076] In one embodiment of the present application, Figures 1-4 As shown, it also includes a classroom recording module 7, which includes a microphone 71 arranged on the surface of the shell 1, and an audio encoding chip 72 electrically connected to the microphone 71. The audio encoding chip 72 is electrically connected to the USB storage module 2, and is used to encode the sound signal collected by the microphone 71 into digital audio data and store it in the USB storage module 2.

[0077] It is understood that the microphone 71 is exposed on the surface of the housing 1 and is used to collect ambient sound (such as teacher explanations and classroom interactions). The microphone 71 is electrically connected to the analog signal input terminal of the audio encoding chip 72 through an audio signal line.

[0078] The audio encoding chip 72 is encapsulated inside the housing 1 and is electrically connected to the USB storage module 2 via a data bus (e.g., SPI / I2C interface). Its function is to convert the analog audio signal input by the microphone 71 into digital audio data (e.g., MP3, WAV format) and transmit it to the USB storage module 2 for storage.

[0079] Detailed workflow

[0080] 1. Sound signal collection

[0081] After the presenter or teacher turns on the recording function:

[0082] The microphone 71 collects ambient sound in real time, converts sound wave vibrations into analog electrical signals (audio signals), and transmits them to the audio encoding chip 72 through the audio signal line.

[0083] 2. Digital processing of analog signals

[0084] After receiving the analog audio signal, the audio encoding chip 72 performs the following processing steps:

[0085] Analog-to-digital conversion (ADC): Converts analog signals into digital signals (e.g., 44.1kHz sampling rate, 16-bit quantization).

[0086] Compression encoding: compress the digital signal according to a preset format (such as MP3 encoding) to reduce the amount of data (optional step, depending on the chip function).

[0087] Data packaging: Encapsulate the encoded audio data into a standard audio file format (such as WAV file header information + audio data body).

[0088] 3. Data storage to USB storage module

[0089] The processed digital audio data is transmitted to the USB storage module 2 via the data bus:

[0090] The USB storage module 2 stores the audio file in the built-in flash memory chip, and the storage path can be automatically generated (such as "U disk root directory / recording file / 20250414_0830.wav").

[0091] During the storage process, if the device is connected to an external device via the USB interface 21, the data can be displayed on a computer or other device in real time; if it is disconnected from the external device, the data is temporarily stored in the USB disk and can be exported after reconnection.

[0092] 4. Power supply and power consumption management

[0093] The recording module is powered by the device's overall power supply module 4. When plugged into an external device, it is powered by the USB power supply unit 41, and when disconnected, it is powered by the built-in battery unit 42.

[0094] Low power design: The audio encoding chip 72 uses a low power model (such as CS4272), and the power consumption during recording is controlled within 5mA, ensuring that long-term recording does not affect the device's battery life.

[0095] In one embodiment of the present application, Figures 1-4 As shown, it also includes an emergency backup module 8, which includes a status monitoring unit 81 and a data backup unit 82 arranged in the control module 5. The status monitoring unit 81 is used to monitor the power status of the built-in battery unit 42 and the abnormal working signal of the device in real time. The data backup unit 82 is electrically connected to the USB storage module 2 and is used to automatically trigger the backup storage of the data in the USB storage module 2 when the status monitoring unit 81 detects that the power is lower than a preset threshold or an abnormal working signal.

[0096] It can be understood that the status monitoring unit 81, as a built-in functional unit of the control module 5, is electrically connected to the power monitoring interface of the built-in battery unit 42 through the circuit to obtain battery power data in real time; at the same time, it monitors the abnormal working signals of the device (such as abnormal disconnection of the USB interface 21, operation error of the control module 5, etc.).

[0097] The data backup unit 82 is electrically connected to the USB storage module 2 via a data bus (such as an SPI / NAND interface), and has a built-in backup control logic for performing operations such as data copying and encryption.

[0098] Detailed workflow

[0099] 1. Real-time status monitoring

[0100] Power monitoring:

[0101] The status monitoring unit 81 reads the remaining power of the built-in battery unit 42 in real time (such as converting the battery voltage into a percentage through ADC acquisition) through the battery management circuit (built-in the power supply module 4 or the control module 5).

[0102] Abnormal signal monitoring:

[0103] Monitor the connection status of the USB interface 21 (whether it is powering on or transmitting data normally), the operating status of the control module 5 (such as program crash, hardware failure error), etc.

[0104] 2. Trigger condition judgment

[0105] When the status monitoring unit 81 detects any of the following situations, a trigger signal is generated:

[0106] Power threshold trigger: the power level of the built-in battery unit 42 is lower than a preset threshold (such as 10%, which can be configured by the firmware of the control module 5).

[0107] Abnormal signal triggering: USB interface 21 is suddenly disconnected, control module 5 detects system error code, etc.

[0108] 3. Data backup execution

[0109] After receiving the trigger signal, the data backup unit 82 executes the following steps:

[0110] Lock current data: suspend the writing operation of the USB storage module (2) (to avoid data changes during the backup process), and generate a current file list (such as a PPT or document being edited).

[0111] Quick backup: Copy the core data in the USB storage module 2 (such as the user-defined "backup folder" or all files) to the preset backup area (such as the hidden partition in the USB storage module 2, which supports encrypted storage).

[0112] Backup completion confirmation: Feedback the backup result to the control module 5, if successful, mark the backup time; if failed, try a second backup or generate an error log (stored in the USB storage module 2).

[0113] 4. Power supply guarantee mechanism

[0114] If the device is connected to an external device via the USB interface 21 when triggered, the USB power supply unit 41 is used first to complete the backup to ensure power stability.

[0115] If the built-in battery unit 42 is in power supply mode, the control module 5 temporarily increases the power supply priority to the data backup unit 82 and reduces the power consumption of other modules (such as the wireless controller 3) to ensure that the backup process is not interrupted.

[0116] In one embodiment of the present application, Figures 1-4 As shown, the shell 1 is rectangular, the USB interface 21 is arranged at the front end of the shell 1, the 2.4GHz / Bluetooth dual-mode wireless controller 3, the power supply module 4, the control module 5, the laser marking module 6, the classroom recording module 7 and the emergency backup module 8 are all encapsulated in sequence inside the shell 1 along the axial direction of the shell 1, and the laser control switch 62 and the microphone 71 are arranged on the side surface of the shell 1.

[0117] As can be understood, the housing 1 is a rectangular parallelepiped structure made of lightweight aluminum alloy or ABS engineering plastic, which takes into account both portability and durability. A USB port 21 (compliant with the USB 3.0 standard) is provided on the front end, exposed on the front face of the housing 1, for plugging in external devices such as computers and projectors.

[0118] The functional modules are packaged in sequence from the front end to the rear end along the axial direction (i.e., the length direction) of the housing 1, and are specifically arranged as follows:

[0119] The USB interface 21 and the USB storage module 2 are located at the front end of the housing 1 , with the USB interface 21 exposed. The flash memory chip and control circuit of the USB storage module 2 are adjacent to the rear side of the interface.

[0120] Function: When an external device is inserted, the USB interface 21 directly contacts the external device, transmitting data and power via the shortest path, reducing signal loss.

[0121] Position of the 2.4GHz / Bluetooth dual-mode wireless controller 3: adjacent to the rear side of the USB storage module 2, with the built-in antenna facing the front end of the housing 1 to optimize the direction of wireless signal transmission.

[0122] Connection: Electrically connected to the control module 5 in the middle through the FPC cable to ensure the stability of high-frequency signal transmission.

[0123] Position of the power supply module 4: located in the middle of the shell 1, including a USB power supply unit 41 (close to the front end, directly electrically connected to the USB interface 21) and a built-in battery unit 42 (lithium battery, long and narrow and attached to the inner wall of the shell).

[0124] Advantages: The central layout allows power to be evenly distributed to the front and rear end modules. The long strip design of the built-in battery 42 fits the rectangular space and improves battery life (such as 300mAh capacity).

[0125] The control module 5 is located immediately behind the power supply module 4 and uses an STM32F103RCT6 microprocessor (10 mm × 10 mm) and is electrically connected to the peripheral modules via a PCB.

[0126] Core functions: Serving as a central control unit, it monitors the connection status of the USB interface 21 in real time, controls power supply switching, and coordinates the working logic of modules such as laser marking, recording, and backup.

[0127] Laser marking module 6, classroom recording module 7, emergency backup module 8

[0128] Position: Arranged axially behind the control module 5, where:

[0129] Laser emitter 61: located on the front side of the housing 1, with the emission window facing the direction of the demonstration screen;

[0130] Microphone 71: Located on the side surface of the middle portion of the housing 1, with the opening facing the user's mouth when holding the device, to improve sound collection sensitivity;

[0131] Emergency backup module 8: As a built-in functional unit of the control module 5, it has no independent hardware and implements data backup through software logic.

[0132] Laser control switch 62: Located in the middle of the right side surface of the housing 1, it is designed as a circular push button that can be naturally touched by the thumb when the user holds it. A short press turns on the laser marking, and a long press adjusts the brightness of the light spot.

[0133] Microphone 71: Located in the middle of the left side surface of the housing 1, it adopts a 3mm diameter micro-porous dust-proof design and an integrated windshield to reduce environmental noise interference and ensure clear recording.

[0134] In one embodiment of the present application, Figures 1-4 As shown, the 2.4GHz / Bluetooth dual-mode wireless controller 3 adopts a wireless communication chip of model nRF52832, and the control module 5 adopts a microprocessor of model STM32F103RCT6. The I / O interface of STM32F103RCT6 is electrically connected to the communication interface of nRF52832, the control interface of the USB storage module 2, the switching control end of the power supply module 4, the control end of the laser marking module 6, the audio input and output end of the classroom recording module 7 and the signal input end of the emergency backup module 8.

[0135] It is understandable that the 2.4GHz / Bluetooth dual-mode wireless controller 3

[0136] Model: nRF52832 wireless communication chip (produced by Nordic Semiconductor)

[0137] Function: Supports 2.4GHz wireless communication (compatible with traditional wireless presenter protocols) and Bluetooth 5.0 dual-mode, built-in 32-bit ARMCortex-M4F core, responsible for generating page turning control signals (such as "previous page" and "next page" instructions), and transmitting wireless signals through the antenna (built-in chip package).

[0138] Control module 5

[0139] Model: STM32F103RCT6 microprocessor (produced by STMicroelectronics)

[0140] Function: As the "brain" of the device, it has a built-in 32-bit ARM Cortex-M3 core and integrates a rich set of I / O interfaces (such as UART, SPI, I2C, etc.), which are used to coordinate the work of various modules and perform core control tasks such as power switching, logic judgment, and data processing.

[0141] The I / O interface of STM32F103RCT6 (control module 5) is electrically connected to each module through the PCB circuit board. The specific connections are as follows:

[0142] 1. Connection with nRF52832 (wireless controller 3)

[0143] Communication interface: connected via SPI bus (Serial Peripheral Interface)

[0144] effect:

[0145] STM32F103RCT6 sends page turning command data (such as key code value) to nRF52832;

[0146] Receive status feedback from nRF52832 (such as wireless signal strength, connection status).

[0147] 2. Connection with USB storage module 2

[0148] Control interface: connected via USB 2.0 controller interface (built-in STM32 chip)

[0149] effect:

[0150] Control the file read and write operations of USB storage module 2 (such as sector addressing when opening a PPT file);

[0151] A connection status signal of the USB interface 21 (detection of insertion / removal of an external device) is received.

[0152] 3. Connection with power supply module 4

[0153] Switch control terminal: connected via GPIO pin (general input and output port)

[0154] effect:

[0155] Output high / low level signals to control the power supply module 4 to switch between the USB power supply unit 41 and the built-in battery unit 42;

[0156] Monitor the power level of the built-in battery unit 42 (read the battery voltage through the ADC analog-to-digital conversion interface).

[0157] 4. Connection with laser marking module 6

[0158] Control end: connect the laser emitter 61 and the laser control switch 62 through the GPIO pin

[0159] effect:

[0160] Receive a key signal from the laser control switch 62 (such as an electrical signal for "turning on the laser");

[0161] The output PWM signal (Pulse Width Modulation) controls the power of the laser emitter 61 (adjusts the brightness of the light spot).

[0162] 5. Connection with Classroom Recording Module 7

[0163] Audio input and output: Connect to audio encoding chip 72 through I2S interface (integrated circuit audio interface)

[0164] effect:

[0165] Receive digital audio data (such as MP3 format data stream) processed by the audio encoding chip 72;

[0166] Send instructions to control the start and stop of recording (such as triggering the microphone 71 to start collecting sound through software).

[0167] 6. Connection with emergency backup module 8

[0168] Signal input terminal: Receives the trigger signal of the status monitoring unit 81 through the GPIO pin

[0169] effect:

[0170] Responding to signals such as low power (e.g. built-in battery unit 42 < 10%) or abnormal disconnection;

[0171] The firmware program of the data backup unit 82 is called to perform data backup of the USB storage module 2 .

[0172] (Take page turning as an example):

[0173] The user triggers the page turning button (assuming it is connected to the GPIO pin of control module 5):

[0174] When a button is pressed, an electrical signal (such as a high-level pulse) is sent to the STM32F103RCT6.

[0175] Control module 5 parses the instruction:

[0176] The STM32F103RCT6 detects the key signal through the GPIO pin and queries the preset instruction table (for example, "next page" corresponds to instruction code 0x01).

[0177] Wireless controller 3 encodes and sends signals:

[0178] STM32F103RCT6 transmits the instruction code to nRF52832 via the SPI bus;

[0179] The nRF52832 encodes the command into a 2.4GHz wireless signal or Bluetooth signal and transmits it to the demonstration device (such as a computer) through the antenna.

[0180] The demo device responds:

[0181] The wireless receiving module 91 of the presentation device receives the signal, and the HID composite device driver interprets it as a "Page Down" keyboard command, triggering the PPT page to turn.

[0182] In one embodiment of the present application, Figures 1-4 As shown, a demonstration device 9 used in conjunction with a U disk device is provided with a wireless receiving module 91 that matches the 2.4GHz / Bluetooth dual-mode wireless controller 3. The wireless receiving module 91 is used to receive the page turning control signal sent by the 2.4GHz / Bluetooth dual-mode wireless controller 3. The demonstration device 9 is installed with a HID composite device driver for realizing parallel interaction with the data storage signal of the USB storage module 2 of the U disk device and the control signal of the 2.4GHz / Bluetooth dual-mode wireless controller 3.

[0183] It can be understood that the wireless receiving module 91 corresponds one-to-one with the 2.4GHz / Bluetooth dual-mode wireless controller 3 of the USB device, and supports the 2.4GHz wireless protocol (such as the NORDIC nRF protocol) or the Bluetooth 5.0 protocol;

[0184] Physical form: integrated into the demonstration device 9 (such as the Bluetooth chip on the computer motherboard, the 2.4G receiver of the projector).

[0185] HID composite device driver: pre-installed in the operating system of the demonstration device 9 (such as Windows, macOS, Android), supports plug-and-play, and does not require manual installation.

[0186] Detailed workflow

[0187] 1. Initial connection and driver loading

[0188] Insert the USB drive into the demonstration device:

[0189] The USB disk device is inserted into a computer or other device through the USB interface 21, and the USB storage module 2 is identified as a "storage device + input device" through the HID composite device driver;

[0190] The demonstration device 9 automatically loads the HID composite driver and completes the device pairing with the 2.4GHz / Bluetooth dual-mode wireless controller 3 (pairing needs to be confirmed during the first connection and will be automatically connected subsequently).

[0191] Wireless receiving module 91 is activated:

[0192] If the demonstration device 9 is a computer, its built-in Bluetooth module or 2.4G receiver (such as Intel Bluetooth chip) establishes a communication link with the nRF52832 chip 3 of the USB flash drive;

[0193] If it is a projector, the USB flash drive signal is received through the 2.4G wireless receiver (external or built-in) on the side of the body.

[0194] 2. Page turning control signal transmission process

[0195] User operation USB flash drive button:

[0196] When a page turning key (connected to the control module 5 ) of the USB device is pressed, the control module 5 generates a page turning instruction (eg “previous page” corresponds to the “Page Up” instruction code in the HID protocol).

[0197] Signal encoding and transmission:

[0198] The 2.4GHz / Bluetooth dual-mode wireless controller 3 encodes the instruction into a 2.4GHz wireless signal (frequency band 2400-2483.5MHz) or a Bluetooth signal (BLE low power mode) and transmits it through a built-in antenna.

[0199] Demonstration equipment reception and analysis:

[0200] After the wireless receiving module 91 captures the signal, it transmits it to the operating system of the demonstration device 9;

[0201] The HID composite driver interprets the signal as a standard input device instruction (such as simulating a keyboard key), triggering the presentation software (such as PowerPoint, Keynote) to perform a page turning action.

[0202] 3. Parallel interaction between data storage and control signals

[0203] Storage signal path:

[0204] The USB storage module 2 directly transmits file data (such as reading PPT files in a USB disk) to the presentation device 9 via the USB interface 21 , and the path is: USB interface 21 → presentation device USB controller → memory / hard disk.

[0205] Control signal path:

[0206] 2.4GHz / Bluetooth wireless signal → wireless receiving module 91 → demonstration device operating system → HID driver → demonstration software, which is independently transmitted through different channels with the storage signal without interfering with each other.

[0207] 4. Cross-device scenario adaptation

[0208] Scenario 1: USB flash drive plugged into computer for demonstration

[0209] The U disk device is powered by the USB power supply unit 41, the USB storage module 2 reads files in real time, and the wireless controller 3 sends a page turning signal to the computer via 2.4G / Bluetooth, and the computer processes the file reading and page turning instructions at the same time.

[0210] Scenario 2: Unplug the USB drive and connect it to the projector

[0211] The U disk switches to the built-in battery unit 42 for power supply, pairs with the projector 9 via Bluetooth, the wireless receiving module 91 of the projector receives the page turning signal, and the files loaded by the U disk storage module 2 are output to the projector screen via a wired interface such as HDMI.

[0212] Plug and play experience:

[0213] The HID composite driver supports Windows (automatically identified as "Human Interface Device"), macOS (native HID protocol compatible), and Linux (universal HID driver), without the need for additional software configuration.

[0214] Seamless switching between multiple devices:

[0215] The USB device can be paired with multiple presentation devices 9 at the same time, and the target device can be switched by pressing the button of the control module 5 (such as short pressing the switch button to select "computer" or "projector").

[0216] Signal stability:

[0217] The 2.4GHz wireless uses frequency hopping technology (AFH) to avoid Wi-Fi interference, and Bluetooth 5.0 supports a connection distance of up to 30 meters, ensuring a page-turning command response speed of ≤15ms during a presentation.

[0218] Typical application examples (taking computer + USB disk system as an example)

[0219] The teacher inserts the USB drive into the podium computer, and the computer pops up the USB drive letter (storage module) and recognizes it as a page-turning pen (input device);

[0220] Open the PPT file in the USB flash drive without copying the file. Just turn the page by pressing the USB flash drive button. At the same time, the laser emitter 61 marks the key points on the screen.

[0221] If the computer supports Bluetooth, the teacher can unplug the USB drive and continue to control the PPT via Bluetooth from anywhere in the classroom, while the microphone 71 simultaneously records the audio of the lecture and stores it in the USB drive.

[0222] In one embodiment of the present application, Figures 1-4 As shown, the demonstration device 9 is a computer, projector or smart TV, the wireless receiving module 91 is a 2.4GHz wireless receiver or Bluetooth receiver integrated into the demonstration device 9, and the HID composite device driver is pre-installed in the operating system of the demonstration device 9 and supports plug-and-play function.

[0223] It is understood that the demonstration devices 9 in this system include common types such as computers, projectors, and smart TVs. Each demonstration device 9 has an integrated wireless receiving module 91. These modules come in two types: a 2.4 GHz wireless receiver and a Bluetooth receiver, to adapt to the signal transmission of the 2.4 GHz / Bluetooth dual-mode wireless controller 3 in the USB device.

[0224] The HID composite device driver is pre-installed in the operating system of the demonstration device 9 and has plug-and-play functionality. This means that when the USB device is connected to the demonstration device 9, the system can automatically identify and load the corresponding driver without manual user intervention.

[0225] Workflow:

[0226] When a USB flash drive is inserted into a computer via USB port 21, the computer's operating system first detects the connection of the USB storage module 2. Simultaneously, the operating system automatically identifies the USB flash drive as a composite device, including both a storage device and an input device (corresponding to the 2.4 GHz / Bluetooth dual-mode wireless controller 3), using the pre-installed HID composite device driver.

[0227] If the USB drive uses a 2.4GHz wireless signal for communication, the computer's internal 2.4GHz wireless receiver (wireless receiving module 91) will automatically search for and pair with the 2.4GHz signal emitted by the USB drive. If Bluetooth is used, the computer's Bluetooth receiver (wireless receiving module 91) will pair with the Bluetooth module of the USB drive. The entire pairing process follows the Bluetooth protocol pairing process.

[0228] For a projector, when a USB flash drive is connected via a corresponding connection method (eg, some projectors may support USB connection), the operating system inside the projector will also use the HID composite device driver to identify the USB flash drive.

[0229] If the USB flash drive device uses 2.4GHz wireless communication, the projector's 2.4GHz wireless receiver (wireless receiving module 91) will attempt to establish a connection with the USB flash drive device. Some projectors may require a simple pairing operation in the settings interface, but due to the plug-and-play nature of the HID composite device driver, the entire process is relatively simple. If Bluetooth communication is used, the projector's Bluetooth receiver (wireless receiving module 91) will complete the pairing with the USB flash drive device.

[0230] When the USB flash drive is connected to the smart TV, the operating system of the smart TV will respond quickly and use the HID composite device driver to identify the USB flash drive.

[0231] The smart TV's internal 2.4GHz wireless receiver or Bluetooth receiver (wireless receiving module 91) will pair the USB device based on the communication method used (2.4GHz wireless or Bluetooth). The smart TV will usually provide corresponding prompts on the screen to guide the user through the pairing process. The entire process utilizes the plug-and-play function of the HID composite device driver, which is convenient and fast.

[0232] Page turning control signal

[0233] When the user operates the page turning button on the USB device, the 2.4 GHz / Bluetooth dual-mode wireless controller 3 encodes the page turning instruction into a 2.4 GHz wireless signal or a Bluetooth signal and transmits it.

[0234] After receiving the signal, the wireless receiving module 91 of the presentation device 9 transmits it to the operating system. The HID composite device driver in the operating system interprets the signal and converts it into input commands that the operating system can recognize, such as simulating the "Previous Page" and "Next Page" keystrokes on a keyboard. This command is then passed to the running presentation software (such as PowerPoint on a computer, a presentation program on a projector, or a presentation app on a smart TV), enabling the page turning of the presentation content.

[0235] Data storage signal

[0236] The USB storage module 2 of the USB flash drive device communicates with the presentation device 9 via USB interface 21. The presentation device 9's operating system uses the HID composite device driver to identify the USB flash drive as a storage device, allowing users to read and write files on it just like a regular USB flash drive. Thanks to the HID composite device driver, the transmission of data storage signals and page-turning control signals is independent and does not interfere with each other, enabling parallel interaction.

[0237] It should be noted that the control method of the present application can be automatically controlled by a controller, and the control method of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, the present application is mainly used to protect mechanical structures, so the control method and circuit connection are no longer explained in detail in this application.

[0238] Specifically, taking the teacher's classroom demonstration scenario as an example, the complete workflow of the USB device and system with integrated page turning function is explained in detail:

[0239] 1. Device connection and initialization (insert into computer)

[0240] The teacher takes out the device and plugs the USB interface 21 on the front of the housing 1 into the USB port of the podium computer:

[0241] The USB storage module 2 establishes a data connection with the computer through the USB interface 21. The computer operating system automatically recognizes it as a U disk storage device, pops up a drive letter and displays the internal presentation file (such as "teaching courseware.pptx").

[0242] The HID composite device driver is now active, and the computer will also recognize the device as an input device (corresponding to 2.4GHz / Bluetooth dual-mode wireless controller 3), eliminating the need for manual driver installation.

[0243] Power supply module 4 status: the control module 5 detects that the USB interface 21 is connected, automatically switches to the USB power supply unit 41 for power supply, and the built-in battery unit 42 enters the charging standby state.

[0244] 2. Demonstration file reading and page turning control

[0245] The teacher double-clicks the PPT file in the USB drive and directly opens the presentation software (such as PowerPoint) on the computer:

[0246] Page turning operation: the thumb presses the page turning button on the side surface of the housing 1 (electrically connected to the control module 5), and the key signal is transmitted to the control module 5 to generate a "next page" instruction.

[0247] Signal transmission: The 2.4GHz / Bluetooth dual-mode wireless controller 3 encodes the command into a 2.4GHz wireless signal (or Bluetooth signal) and transmits it to the computer through the built-in antenna.

[0248] Computer response: The computer's built-in 2.4GHz wireless receiver (or Bluetooth module, i.e., the wireless receiving module 91 of the presentation device 9) receives the signal, and the HID driver interprets it as a "Page Down" keyboard command, triggering the PPT page turning.

[0249] 3. Laser marking and emphasis

[0250] During the explanation, the teacher briefly presses the laser control switch 62 on the right side of the housing 1:

[0251] The control module 5 receives the switch electrical signal and sends a high-level instruction to the laser emitter 61 to activate the laser diode 61 located on the front side of the housing 1 .

[0252] Laser projection: A laser spot with a wavelength of 650nm is projected onto the screen. The teacher adjusts the position of the spot by using a mobile device and marks key contents such as formulas and charts. Short-press the laser control switch 62 again, and the control module 5 sends a low-level signal to turn off the laser.

[0253] 4. Classroom recording and real-time storage

[0254] The teacher presses and holds the recording start button (connected to the control module 5) to start the classroom recording function:

[0255] The microphone 71 collects the explanation voice and transmits the analog audio signal to the audio encoding chip 72.

[0256] Audio processing: The audio encoding chip 72 generates digital audio data through ADC analog-to-digital conversion and MP3 compression encoding, and stores it in the "classroom recording" folder of the USB storage module 2 via the data bus (automatically generates a file name such as "20250414_1000.aac").

[0257] Power supply support: If the device is still connected to the computer during recording, it will be powered by the USB power supply unit 41; if it is temporarily unplugged and moved, it will automatically switch to the built-in battery unit 42, and can continuously record for 8 hours in low power mode.

[0258] 5. Emergency backup trigger (taking low battery as an example)

[0259] When the power level of the built-in battery unit 42 drops to 10% (preset threshold), the status monitoring unit 81 (located in the control module 5) detects that the power level is abnormal:

[0260] Trigger backup: The data backup unit 82 receives a trigger signal, suspends the write operation of the USB storage module 2, and quickly copies the currently opened PPT file and recording data to the hidden partition of the USB disk (supports AES encryption).

[0261] Power supply guarantee: The control module 5 temporarily increases the priority of the USB power supply unit 41 (if it is still plugged into the computer) or reduces the power consumption of the wireless controller 3 to ensure that the backup process is not interrupted.

[0262] 6. Mobile presentation without a computer

[0263] The teacher unplugs the USB drive and walks to the back of the classroom (about 15 meters from the computer) with the device:

[0264] Power supply switching: the control module 5 detects that the USB interface 21 is disconnected and automatically switches to the built-in battery unit 42 for power supply to maintain the operation of the 2.4 GHz / Bluetooth dual-mode wireless controller 3.

[0265] Wireless connection: The computer's wireless receiving module 91 maintains a Bluetooth connection with the device's nRF52832 chip 3, and continues to receive page-turning instructions, thus achieving seamless control after disconnecting from the computer.

[0266] Data interaction: The PPT file in the USB flash drive has been loaded into the computer memory and does not need to be read repeatedly, ensuring that the page turning response speed is ≤15ms.

[0267] 7. End of demonstration and data export

[0268] After the demonstration, the teacher plugs the device back into the computer:

[0269] Charging and data export: The USB power supply unit 41 charges the built-in battery unit 42, and at the same time the computer can read the demonstration files, recording data and backup files in the USB storage module 2.

[0270] Multi-device compatibility: If you need to present on a projector, the device can be paired with the projector's wireless receiving module 91 via Bluetooth without the need for reconfiguration, and the HID driver automatically adapts.

[0271] In summary, the embodiment of the present application is a U disk device and system with integrated page turning function. The present invention integrates the USB storage module and the 2.4G / Bluetooth controller into one through hardware integration, reducing the device carrying volume by 50%, solving the device redundancy, and using the HID composite driver to realize parallel signal transmission, bringing a plug-and-control experience, dynamic power consumption management to extend battery life, simplify power supply, and expand functions to improve the fluency and reliability of teaching demonstrations.

[0272] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0273] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0274] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A USB flash drive device and system with integrated page turning function, characterized in that: The invention comprises a housing (1), a USB storage module (2) encapsulated in the housing (1), a 2.4 GHz / Bluetooth dual-mode wireless controller (3), a power supply module (4) and a control module (5), wherein: The USB storage module (2) is provided with a USB interface (21) for connecting to an external device, the USB interface (21) being exposed at one end of the housing (1), and the USB storage module (2) performs data transmission and power input with the external device via the USB interface (21); The 2.4GHz / Bluetooth dual-mode wireless controller (3) is electrically connected to the control module (5) and is used to establish a communication connection with the presentation device via a 2.4GHz wireless signal or a Bluetooth signal and send a page turning control signal; The power supply module (4) includes a USB power supply unit (41) electrically connected to the USB interface (21), and a built-in battery unit (42) electrically connected to the control module (5); The control module (5) is used to control the power supply module (4) to automatically switch between power supply by the USB power supply unit (41) and power supply by the built-in battery unit (42) according to whether the device is connected to an external device via the USB interface (21); The device realizes the parallel transmission of the data storage signal of the USB storage module (2) and the control signal of the 2.4 GHz / Bluetooth dual-mode wireless controller (3) through the HID composite device driver.

2. The U disk device and system with integrated page turning function according to claim 1, characterized in that: The invention also includes a laser marking module (6) arranged on the housing (1), the laser marking module (6) including a laser emitter (61) and a laser control switch (62), the laser emitter (61) being electrically connected to the control module (5), and the laser control switch (62) being exposed on the surface of the housing (1) and electrically connected to the control module (5) for controlling the opening and closing of the laser emitter (61) and the laser projection direction.

3. The USB flash drive device and system with integrated page turning function according to claim 1, characterized in that: The device further comprises a classroom recording module (7), wherein the classroom recording module (7) comprises a microphone (71) arranged on the surface of the housing (1), and an audio encoding chip (72) electrically connected to the microphone (71); the audio encoding chip (72) is electrically connected to the USB storage module (2) and is used for encoding the sound signal collected by the microphone (71) into digital audio data and storing the digital audio data in the USB storage module (2).

4. The USB flash drive device and system with integrated page turning function according to claim 1, characterized in that: The device further comprises an emergency backup module (8), the emergency backup module (8) comprising a status monitoring unit (81) and a data backup unit (82) arranged in the control module (5), the status monitoring unit (81) being used to monitor the power status of the built-in battery unit (42) and the abnormal working signal of the device in real time, and the data backup unit (82) being electrically connected to the USB storage module (2) and being used to automatically trigger the backup storage of the data in the USB storage module (2) when the status monitoring unit (81) detects that the power is lower than a preset threshold or an abnormal working signal is detected.

5. A USB flash drive device and system with integrated page turning function according to any one of claims 1 to 4, characterized in that: The housing (1) is rectangular, the USB interface (21) is arranged at the front end of the housing (1), the 2.4 GHz / Bluetooth dual-mode wireless controller (3), the power supply module (4), the control module (5), the laser marking module (6), the classroom recording module (7) and the emergency backup module (8) are all packaged in sequence inside the housing (1) along the axial direction of the housing (1), and the laser control switch (62) and the microphone (71) are arranged on the side surface of the housing (1).

6. The USB flash drive device and system with integrated page turning function according to claim 5, characterized in that: The 2.4GHz / Bluetooth dual-mode wireless controller (3) adopts a wireless communication chip of model nRF52832, the control module (5) adopts a microprocessor of model STM32F103RCT6, and the I / O interface of the STM32F103RCT6 is electrically connected to the communication interface of the nRF52832, the control interface of the USB storage module (2), the switching control end of the power supply module (4), the control end of the laser marking module (6), the audio input and output ends of the classroom recording module (7), and the signal input end of the emergency backup module (8).

7. A USB flash drive system with integrated page turning function, characterized by: The invention comprises a U disk device with an integrated page turning function as described in any one of claims 1 to 6, and a demonstration device (9) used in conjunction with the U disk device, wherein the demonstration device (9) is provided with a wireless receiving module (91) matched with the 2.4 GHz / Bluetooth dual-mode wireless controller (3), and the wireless receiving module (91) is used to receive a page turning control signal sent by the 2.4 GHz / Bluetooth dual-mode wireless controller (3); the demonstration device (9) is installed with a HID composite device driver for realizing parallel interaction with the data storage signal of the USB storage module (2) of the U disk device and the control signal of the 2.4 GHz / Bluetooth dual-mode wireless controller (3).

8. The USB flash drive system with integrated page turning function according to claim 7, characterized in that: The demonstration device (9) is a computer, a projector or a smart TV, the wireless receiving module (91) is a 2.4 GHz wireless receiver or a Bluetooth receiver integrated into the demonstration device (9), and the HID composite device driver is pre-installed in the operating system of the demonstration device (9) and supports a plug-and-play function.

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