NFC wireless entity password keyboard
By designing an NFC wireless physical keypad, the problems of poor user experience and information leakage risk in password input of existing NFC devices are solved, realizing a convenient and efficient password input process and improving user experience and security.
Patent Information
- Application Number
- CN202520051734.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing NFC devices lack a dedicated physical keyboard design for password input, resulting in a poor user input experience and increasing the risk of information leakage.
An NFC wireless physical keypad was designed, including a keypad housing, a wireless module, a keypad scanning module, a power acquisition circuit, and an information output circuit. The wireless module acquires power from an NFC smart terminal, and the power acquisition circuit and voltage regulator module provide a stable voltage to the keypad scanning module. The key information is scanned in real time and wirelessly transmitted through a dynamic NFC interface repeater to achieve secure transmission of key information.
It enables a convenient and efficient password input process, eliminating the need for additional cable connections and complex pairing settings, thus improving both efficiency and security.
Smart Images
Figure CN223664986U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of information security, and particularly relates to an NFC wireless entity password keyboard. BACKGROUND
[0002] With the popularity of mobile payment and the improvement of information security demand, the traditional physical password keyboard has been difficult to meet the dual demands of convenience and security. As a short-range wireless communication technology, NFC technology is widely used in the fields of mobile payment, access control system and the like due to its high security, low power consumption and ease of use. However, most of the NFC devices on the market integrate multiple functions, but lack a special entity keyboard design in terms of password input, which may lead to poor user input experience and may also increase the risk of information leakage. CONTENT OF THE UTILITY MODEL
[0003] Therefore, the present application provides an NFC wireless entity password keyboard.
[0004] According to an aspect of the present application, an NFC wireless entity password keyboard is provided, comprising a keyboard shell, a wireless module, a keyboard scanning module, a power acquisition circuit and an information output circuit.
[0005] The wireless module, the keyboard scanning module, the power acquisition circuit and the information output circuit are arranged on the keyboard shell.
[0006] The keyboard scanning module is electrically connected with the wireless module through the power acquisition circuit, and the wireless module is suitable for acquiring power from a nearby NFC intelligent terminal.
[0007] The keyboard scanning module is in communication connection with the wireless module through the information output circuit, and the wireless module is suitable for connecting with an NFC intelligent terminal to output key information.
[0008] In a possible implementation manner, a voltage stabilizing module is further included.
[0009] The power acquisition circuit comprises a D1 diode, a D2 diode, a D3 diode, a D4 diode, a capacitor C1, a capacitor C2 and a voltage stabilizing module. The D1 diode and the D2 diode are connected in series, the D3 diode and the D4 diode are connected in series, and the D1 diode and the D2 diode are connected in parallel with the D3 diode and the D4 diode. One end of the wireless module is electrically connected between the D1 diode and the D2 diode, and the other end is electrically connected between the D3 diode and the D4 diode.
[0010] The VIN pin of the voltage stabilizing module is electrically connected with the output end of the electric quantity acquisition circuit, and the VOUT pin is electrically connected with the keyboard scanning module.
[0011] In a possible implementation, the device further comprises a C1 capacitor and a C2 capacitor.
[0012] The C1 capacitor and the C2 capacitor are respectively connected with the output end of the electric quantity acquisition circuit and the ground wire connected with the voltage stabilizing module.
[0013] The capacitance of the C1 capacitor is 10 nF, and the capacitance of the C2 capacitor is 100 μF.
[0014] In a possible implementation, the device further comprises a dynamic NFC interface repeater and a keyboard scanning GPIO.
[0015] The wireless module is electrically connected with the keyboard scanning module through the voltage stabilizing module and the keyboard scanning GPIO.
[0016] The dynamic NFC interface repeater is electrically connected with the voltage stabilizing module, and the dynamic NFC interface repeater is in communication connection with the wireless module and the keyboard scanning module through the keyboard scanning GPIO.
[0017] In a possible implementation, the dynamic NFC interface repeater comprises an NDEF storage space, a chip unit, a compatible RF interface and a 12C / SPI interface.
[0018] The chip unit is in communication connection with the NDEF storage space, and the communication interface is in writing and reading.
[0019] The chip unit is in communication connection with the compatible RF interface, and the wireless module is accessed and updated.
[0020] The chip unit is in communication connection with the 12C / SPI interface, and is suitable for connection with a terminal host.
[0021] In a possible implementation, the wireless module is arranged at the front end of the keyboard shell, and the keyboard scanning module is arranged at the end of the keyboard shell.
[0022] The NFC wireless entity password keyboard of the embodiment of the present application has the following beneficial effects: when a user needs to input a password, the user first places the password keyboard close to a smart terminal with NFC function, such as a smart phone, a tablet computer or other payment terminal device, at this time, the wireless module at the front end of the keyboard shell and the NFC module of the smart terminal are inductively coupled, the terminal is powered through the power acquisition circuit, the power is rectified by the diode, filtered by the capacitor and stabilized by the voltage stabilizing module, and then a stable working voltage is provided for the keyboard scanning module, the user presses the password keyboard key, the keyboard scanning module scans the key information in real time, the information is transmitted to the smart terminal through the dynamic NFC interface transponder, the compatible RF interface and the NFC module of the terminal, and finally the key information is safely transmitted to the smart terminal, the password input operation is completed, the whole process is convenient and efficient, no additional cable connection and complex pairing setting are needed, and the use efficiency is improved.
[0023] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.
[0025] Figure 1 Fig. 1 shows a schematic diagram of a terminal connection of the NFC wireless entity password keyboard of the embodiment of the present application;
[0026] Figure 2 Fig. 2 shows a schematic diagram of the circuit connection of the NFC wireless entity password keyboard of the embodiment of the present application;
[0027] Figure 3 Fig. 3 shows a schematic diagram of the power acquisition circuit of the embodiment of the present application;
[0028] Figure 4 Fig. 4 shows a schematic diagram of the main structure of the dynamic NFC interface transponder of the embodiment of the present application. DETAILED DESCRIPTION
[0029] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference signs in the drawings represent functionally identical or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
[0030] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0031] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.
[0032] The word "exemplary" here means "serving as an example, an implementation, or an illustration". Any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
[0033] In addition, in order to better illustrate the present application, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some examples, methods, means, elements and circuits familiar to those skilled in the art are not described in detail, in order to highlight the main idea of the present application.
[0034] As Figures 1-4 shown, the NFC wireless entity password keyboard of the embodiment of the present application comprises: a keyboard shell, a wireless module 100, a keyboard scanning module 200, an electric quantity acquisition circuit and an information output circuit, the wireless module 100, the keyboard scanning module 200, the electric quantity acquisition circuit and the information output circuit are arranged on the keyboard shell, the keyboard scanning module 200 is electrically connected with the wireless module 100 through the electric quantity acquisition circuit, the wireless module 100 is suitable for acquiring electric quantity near the NFC intelligent terminal 20, the keyboard scanning module 200 is in communication connection with the wireless module 100 through the information output circuit, and the wireless module 100 is suitable for connecting with the NFC intelligent terminal 20 to output key information.
[0035] In the embodiment, when the user needs to input a password, the password keyboard is first placed close to the NFC-enabled smart terminal 20, such as a smart phone, a tablet computer, or the like payment terminal 20. At this time, the wireless module 100 located at the front end of the keyboard shell is inductively coupled with the NFC module of the smart terminal 20. The wireless module 100 draws power from the terminal 20 through the power acquisition circuit. The power is rectified by the diode, filtered by the capacitor, and stabilized by the voltage stabilizing module 300. The stabilized working voltage is provided for the keyboard scanning module 200. The user presses the password keyboard key. The keyboard scanning module 200 scans the key information in real time. The information is transmitted to the smart terminal 20 through the dynamic NFC interface transponder 400, the compatible RF interface 440, and the NFC module of the terminal 20. The key information is finally transmitted to the smart terminal 20 safely, the password input operation is completed, the whole process is convenient and efficient, no additional cable connection and complex pairing setting are needed, and the use efficiency is improved.
[0036] In the embodiment, the wireless module 100 is used to communicate with the nearby NFC smart terminal 20, acquire power, and transmit the key information. The keyboard scanning module 200 is responsible for scanning the password input by the user and sending the key information to the wireless module 100 through the information output circuit.
[0037] In a specific embodiment, the NFC wireless entity password keyboard 10 further includes a voltage stabilizing module 300. The power acquisition circuit includes a D1 diode 610, a D2 diode 620, a D3 diode 630, a D4 diode 640, a capacitor C1, a capacitor C2, and the voltage stabilizing module 300. The D1 diode 610 and the D2 diode 620 are connected in series, the D3 diode 630 and the D4 diode 640 are connected in series, and the D1 diode 610 and the D2 diode 620 are connected in parallel with the D3 diode 630 and the D4 diode 640. One end of the wireless module 100 is electrically connected between the D1 diode 610 and the D2 diode 620, and the other end is electrically connected between the D3 diode 630 and the D4 diode 640. The diode combination structure can efficiently acquire inductive power from the NFC smart terminal 20 and perform preliminary rectification. The VIN pin of the voltage stabilizing module 300 is electrically connected with the output end of the power acquisition circuit, and the VOUT pin is electrically connected with the keyboard scanning module 200. The unstable power acquired is converted into a stable voltage suitable for the working of the internal circuit of the keyboard scanning module 200, ensuring the stable operation of the entire password keyboard.
[0038] Further, in this specific embodiment, it also includes: C1 capacitor 650 and C2 capacitor 660, the two ends of C1 capacitor 650 and C2 capacitor 660 are connected with the output end of the electric quantity acquisition circuit and the ground wire connected with the voltage stabilizing module 300 respectively, the two capacitors work together, C1 capacitor 650 is mainly used for filtering high-frequency noise, and C2 capacitor 660 focuses on smoothing the direct current voltage, and they jointly guarantee the power quality of the input to the voltage stabilizing module 300 and the subsequent circuit, and reduce the influence of voltage fluctuation on the operation of the equipment.
[0039] Among them, the electric quantity acquisition circuit obtains electric energy from the intelligent terminal 20 through NFC induction, and supplies power for the keyboard scanning module 200 and other circuits, the circuit includes diodes (D1, D2, D3, D4), capacitors (C1, C2) and a voltage stabilizing module 300 to ensure stable supply of electric energy, and the information output circuit is used for transmitting the key information collected by the keyboard scanning module 200 to the wireless module 100, and then transmitting to the NFC intelligent terminal 20 through the antenna.
[0040] Among them, the capacitance value of C1 is 10nF, and the capacitance value of C2 is 100μF.
[0041] In a specific embodiment, the NFC wireless entity password keyboard further comprises: a dynamic NFC interface transponder 400 and a keyboard scanning GPIO 500, the wireless module 100 is electrically connected with the keyboard scanning module 200 through the voltage stabilizing module 300 and the keyboard scanning GPIO 500, realizing the combination of stable power supply and signal transmission, the dynamic NFC interface transponder 400 is electrically connected with the voltage stabilizing module 300, and the dynamic NFC interface transponder 400 is respectively in communication connection with the wireless module 100 and the keyboard scanning module 200 through the keyboard scanning GPIO 500.
[0042] Further, in this specific embodiment, the dynamic NFC interface transponder 400 comprises: an NDEF storage space 420, a chip unit 410, a compatible RF interface 440 and a 12C / SPI interface 430, the chip unit 410 is in communication connection with the NDEF storage space 420, the communication interface writes and reads, facilitates storage of key information such as password format specification, device identification code and the like, the chip unit 410 is in communication connection with the compatible RF interface 440, and the wireless module 100 is accessed and updated, facilitating data interaction with external NFC equipment, and the chip unit 410 is in communication connection with the 12C / SPI interface 430, which is suitable for connection with the terminal 20 host, ensures high-speed and stable communication with the intelligent terminal 20, and improves the compatibility and functionality of the password keyboard.
[0043] In a specific embodiment, the wireless module 100 is arranged at the front end of the keyboard shell, and the keyboard scanning module 200 is arranged at the end of the keyboard shell.
[0044] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.
Claims
1. An NFC wireless physical password keyboard, characterized in that, The application relates to a keyboard with a wireless module, a keyboard scanning module, an electric quantity acquisition circuit and an information output circuit. The wireless module, the keyboard scanning module, the electric quantity acquisition circuit and the information output circuit are arranged on the keyboard shell. The keyboard scanning module is electrically connected with the wireless module through the electric quantity acquisition circuit, and the wireless module is adapted to acquire electric quantity near an NFC intelligent terminal. The keyboard scanning module is in communication connection with the wireless module through the information output circuit, and the wireless module is adapted to connect with the NFC intelligent terminal to output key information. The application further comprises a voltage stabilizing module.
2. The NFC wireless physical keyboard of claim 1, wherein, The electric quantity acquisition circuit comprises a D1 diode, a D2 diode, a D3 diode, a D4 diode, a capacitor C1 and a capacitor C2 and the voltage stabilizing module; the D1 diode and the D2 diode are in series connection, the D3 diode and the D4 diode are in series connection, and the D1 diode and the D2 diode are in parallel connection with the D3 diode and the D4 diode; one end of the wireless module is electrically connected between the D1 diode and the D2 diode, and the other end is electrically connected between the D3 diode and the D4 diode. The VIN pin of the voltage stabilizing module is electrically connected with the output end of the electric quantity acquisition circuit, and the VOUT pin is electrically connected with the keyboard scanning module. The application further comprises:
3. The NFC wireless physical keyboard of claim 2, wherein, The C1 capacitor and the C2 capacitor; The two ends of the C1 capacitor and the C2 capacitor are respectively connected with the output end of the electric quantity acquisition circuit and the ground wire connected with the voltage stabilizing module; The capacitance value of the C1 capacitor is 10nF, and the capacitance value of the C2 capacitor is 100uF. The application further comprises:
4. The NFC wireless physical keyboard of claim 2, wherein, A dynamic NFC interface repeater and a keyboard scanning GPIO; The wireless module is electrically connected with the keyboard scanning module through the voltage stabilizing module and the keyboard scanning GPIO; The dynamic NFC interface repeater is electrically connected with the voltage stabilizing module, and the dynamic NFC interface repeater is in communication connection with the wireless module and the keyboard scanning module through the keyboard scanning GPIO. The dynamic NFC interface repeater comprises an NDEF storage space, a chip unit, a compatible RF interface and a 12C / SPI interface; 5. The NFC wireless physical keyboard of claim 4, wherein, The chip unit is in communication connection with the NDEF storage space, and the communication interface is in writing and reading; The chip unit is in communication connection with the compatible RF interface, and the chip unit is in wireless module access and updating; The chip unit is in communication connection with the 12C / SPI interface, and the chip unit is adapted to be connected with a terminal host. The wireless module is arranged at the front end of the keyboard shell, and the keyboard scanning module is arranged at the tail end of the keyboard shell.
6. The NFC wireless physical password keypad according to any of claims 1-5, characterized in that,