Fingerprint unlocking circuit, interaction system and electronic device

Abstract

The application belongs to the field of interactive large screens and provides a fingerprint unlocking circuit, an interactive system and an electronic device. The circuit comprises a fingerprint collection module, a control module, a driving module and a key module. The key module outputs a level signal when triggered. The control module outputs a first control signal according to the level signal. The driving module is used for outputting a start-up signal according to the first control signal to control the start-up of the display screen. After start-up, the fingerprint collection module collects fingerprint information and generates a fingerprint package. The control module reads the fingerprint package, checks the fingerprint package and outputs a second control signal after successful checking. The driving module outputs an unlocking signal according to the second control signal to control the unlocking of the display screen. The application realizes the start-up of the display screen through the key triggering mode. After start-up, the display screen is in a state of waiting for unlocking. The unlocking is realized through fingerprint identification, and the user does not need to remember a password or carry a card, which improves the convenience of use and enhances the security of device management.

Description

Technical Field

[0001] This application belongs to the field of interactive large screen technology, and in particular relates to a fingerprint unlocking circuit, interactive system and electronic device. Background Technology

[0002] Current interactive devices are all equipped with an operating system. You need to complete the power-on process before you can enter the operating system and then manage and maintain the device.

[0003] The operating system is typically accessed in the following ways: 1. The device boots directly into the operating system upon startup. This method allows anyone to access and modify the operating system, potentially leading to crashes or malfunctions. 2. A password is required upon startup to access the operating system and perform device operation and maintenance. With this method, if the user forgets the password, or if the user changes without proper password handover, the device will be unable to unlock and access the operating system, preventing further operations. 3. A card verification via NFC (Near Field Communication) is required upon startup to access the operating system and perform device operation and maintenance. With this method, if the user forgets their card, the device will be unable to unlock and access the operating system, preventing further operations; if the verification card is lost, the operating system must be reinstalled to continue using the device.

[0004] None of the above methods of accessing the operating system can achieve both secure and convenient management of the device. Utility Model Content

[0005] This application provides a fingerprint unlocking circuit, an interactive system, and an electronic device, which can solve the problem that current methods of accessing the operating system cannot achieve both secure and convenient management of the device.

[0006] In a first aspect, embodiments of this application provide a fingerprint unlocking circuit, including a fingerprint acquisition module, a control module, a drive module, and a button module. The control module is connected to the fingerprint acquisition module, the drive module, and the button module, respectively, and the drive module is used to connect to a display screen. The button module is used to output a level signal to the control module when triggered; the control module is used to output a first control signal to the drive module according to the level signal; the drive module is used to output a power-on signal to the display screen according to the first control signal to control the display screen to power on; after the display screen is powered on, the fingerprint acquisition module is used to acquire fingerprint information and generate a fingerprint packet; the control module is also used to read the fingerprint packet and verify the fingerprint packet, and after successful verification, output a second control signal to the drive module; the drive module is also used to output an unlock signal to the display screen according to the second control signal to control the display screen to unlock.

[0007] In one possible implementation of the first aspect, the control module includes a control unit and a storage unit, wherein the control unit is connected to the storage unit, the fingerprint acquisition module, the driving module, and the button module, respectively; The storage unit is used to store the fingerprint database; the control unit is used to obtain the fingerprint database from the storage unit after reading the fingerprint packet, and to verify the fingerprint packet according to the fingerprint database. After successful verification, the control unit outputs a second control signal to the driver module.

[0008] In one possible implementation of the first aspect, the control unit includes a SOC chip, which is connected to the storage unit, the fingerprint acquisition module, the driver module, and the button module, respectively.

[0009] In one possible implementation of the first aspect, the storage unit includes a ROM memory connected to the control unit.

[0010] In one possible implementation of the first aspect, the driving module includes a Scaler chip, which is connected to both the control module and the display screen.

[0011] In one possible implementation of the first aspect, the fingerprint unlocking circuit further includes a power amplifier module and a speaker assembly, wherein the power amplifier module is connected to the drive module and the speaker assembly respectively; The driving module is further configured to output a sound signal to the power amplifier module after receiving the second control signal; the power amplifier module is configured to process the sound signal and transmit the processed sound signal to the speaker assembly to drive the speaker assembly to work.

[0012] In one possible implementation of the first aspect, the power amplifier module includes a power amplifier; the input terminal of the power amplifier is connected to the drive module, and the two output terminals of the power amplifier are respectively connected to the speaker assembly.

[0013] In one possible implementation of the first aspect, the fingerprint unlocking circuit further includes a power module, which is connected to the fingerprint acquisition module, the control module, the drive module, the power amplifier module, and the button module, respectively. The power module is used to provide the power supply voltage required for the operation of the fingerprint acquisition module, the control module, the drive module, the power amplifier module and the button module.

[0014] Secondly, embodiments of this application provide an interactive system, including a display screen and a fingerprint unlocking circuit as described in any one of the first aspects. The fingerprint unlocking circuit is connected to the display screen and disposed inside the display screen. A fingerprint acquisition area corresponding to the fingerprint unlocking circuit is provided on the bezel of the display screen. The display screen is used to power on after receiving a power-on signal and also to unlock the screen after receiving an unlock signal.

[0015] Thirdly, embodiments of this application provide an electronic device including the interactive system described in any one of the second aspects.

[0016] The beneficial effects of the embodiments of this application compared with the prior art are: This application provides a fingerprint unlocking circuit, including a fingerprint acquisition module, a control module, a driver module, and a button module. The control module is connected to the fingerprint acquisition module, the driver module, and the button module, respectively, and the driver module is used to connect to the display screen.

[0017] The button module outputs a level signal to the control module when triggered. The control module outputs a first control signal to the drive module based on the level signal. The drive module outputs a power-on signal to the display screen based on the first control signal to power on the display screen. After power-on, the display screen is in an unlocking state; to unlock, the fingerprint acquisition module acquires fingerprint information and generates a fingerprint packet. The control module also reads the fingerprint packet and verifies it; upon successful verification, it outputs a second control signal to the drive module. The drive module also outputs an unlock signal to the display screen based on the second control signal to unlock the screen.

[0018] This application enables the display screen to power on via a button trigger. After powering on, the display screen is in an unlocking state, and then unlocking is achieved via fingerprint recognition. Compared to existing technologies, this application allows users to enter the operating system via fingerprint recognition after the device is powered on, eliminating the need for users to remember passwords or carry verification cards. This improves user convenience and enhances the security of device management.

[0019] It is understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a fingerprint unlocking circuit provided in one embodiment of this application; Figure 2 This is a schematic diagram of a fingerprint unlocking circuit provided in another embodiment of this application; Figure 3 This is a schematic diagram of a fingerprint unlocking circuit provided in another embodiment of this application; Figure 4 This is a schematic diagram of a fingerprint unlocking circuit provided in another embodiment of this application; Figure 5 This is a schematic diagram of a fingerprint unlocking circuit provided in another embodiment of this application.

[0022] In the diagram: 10. Fingerprint unlocking circuit; 11. Fingerprint acquisition module; 12. Control module; 121. Control unit; 122. Storage unit; 13. Driver module; 14. Button module; 15. Power amplifier module; 16. Speaker assembly; 17. Power supply module; 20. Display screen. Detailed Implementation

[0023] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0024] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0025] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [the described condition or event] is detected," or "in response to detection of [the described condition or event]."

[0026] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0028] Currently, interactive devices such as infrared interactive large-screen educational machines, capacitive interactive large-screen educational machines, business conference machines, all-in-one PCs, advertising machines, and televisions are all equipped with operating systems. A power-on operation must be completed before the operating system can be accessed, and then the device can be managed and maintained.

[0029] The operating system is typically accessed in the following ways: The first method involves booting up and directly entering the operating system. This method allows anyone to access and modify the operating system, which can easily lead to system crashes or even malfunctions.

[0030] The second method, building upon the first, involves setting a password. After powering on, a password must be entered to access the operating system and perform any necessary operations or maintenance. However, with this method, if the user forgets the password, or if the user changes and the password is not properly handed over, the device will be unable to unlock and access the operating system, preventing further operations.

[0031] The third method, building upon the first, adds NFC functionality. After powering on, users must first complete card verification via NFC to access the operating system and perform any necessary operations or maintenance. However, with this method, if the user forgets their card, the device will be unable to unlock and access the operating system, preventing further operations. If the verification card is lost, the operating system must be reinstalled to continue using the device.

[0032] None of the above methods of accessing the operating system can achieve both secure and convenient management of the device.

[0033] To address the above problems, embodiments of this application provide a fingerprint unlocking circuit, such as... Figure 1 As shown, the fingerprint unlocking circuit 10 includes a fingerprint acquisition module 11, a control module 12, a drive module 13, and a button module 14. The control module 12 is connected to the fingerprint acquisition module 11, the drive module 13, and the button module 14, respectively. The drive module 13 is used to connect to the display screen 20.

[0034] Specifically, the button module 14 outputs a level signal to the control module 12 when triggered. The control module 12 outputs a first control signal to the drive module 13 based on the level signal. The drive module 13 outputs a power-on signal to the display screen 20 based on the first control signal to control the display screen 20 to power on. After powering on, the display screen 20 is in an unlocking state; to unlock, the fingerprint acquisition module 11 acquires fingerprint information and generates a fingerprint packet. The control module 12 reads the fingerprint packet and verifies it; after successful verification, it outputs a second control signal to the drive module 13. The drive module 13 outputs an unlock signal to the display screen 20 based on the second control signal to control the display screen 20 to unlock. In this embodiment, the fingerprint acquisition module 11 transmits the fingerprint packet to the control module 12 via a USB signal cable. The unlock signal is a VBY (Video-by-One) signal.

[0035] This application enables the display screen 20 to power on via a button trigger. After powering on, the display screen 20 is in an unlocking state, and then unlocking is achieved through fingerprint recognition. Compared with existing technologies, this application allows users to enter the operating system via fingerprint recognition after the device is powered on, eliminating the need for users to remember passwords or carry cards for verification. This improves user convenience and enhances the security of device management.

[0036] It should be noted that, in addition to powering on the display screen 20 via button triggering, this application also supports remote power-on. The specific principle of remote power-on can be found in the relevant existing technologies, which will not be elaborated here.

[0037] like Figure 2 As shown, the control module 12 includes a control unit 121 and a storage unit 122. The control unit 121 is connected to the storage unit 122, the fingerprint acquisition module 11, the driver module 13 and the button module 14 respectively.

[0038] Specifically, the storage unit 122 is used to store the fingerprint database. The control unit 121 is used to obtain the fingerprint database from the storage unit 122 after reading the fingerprint packet, and to verify the fingerprint packet according to the fingerprint database. After successful verification, it outputs a second control signal to the drive module 13.

[0039] The control unit 121 includes a SOC (System on Chip) chip, which is connected to the storage unit 122, the fingerprint acquisition module 11 and the driver module 13 respectively.

[0040] The storage unit 122 includes a ROM (Read-Only Memory) memory, which is connected to the control unit 121.

[0041] The drive module 13 includes a Scaler (Video Scaler) chip, which is connected to the control module 12 and the display screen 20 respectively.

[0042] After the device is powered on, the SOC chip outputs a level signal (e.g., a high-level signal) to the fingerprint acquisition module 11 via its enable pin EN to activate the fingerprint acquisition module 11 and prompt the user to register their fingerprint. When the user places their finger on the fingerprint acquisition module 11, the module collects the user's fingerprint and generates a corresponding fingerprint packet, which is transmitted to the SOC chip via a USB signal line. The SOC chip compares the received fingerprint packet; if no matching fingerprint packet is found, it sends it to the ROM memory for storage, completing the fingerprint registration process.

[0043] The SOC chip also outputs another level signal (such as a low level signal) to the fingerprint acquisition module 11 via its enable pin EN to activate the fingerprint acquisition module 11 and put it into fingerprint acquisition mode. The fingerprint acquisition module 11 acquires the user's fingerprint information and generates a corresponding fingerprint packet. The SOC chip reads the fingerprint packet and retrieves the fingerprint database from the ROM memory. It verifies the received fingerprint packet according to the fingerprint database. After successful verification, it outputs a second control signal to the Scaler chip. The Scaler chip outputs an unlock signal to the display screen 20 according to the second control signal to control the display screen 20 to unlock the screen.

[0044] To facilitate intuitive differentiation between the "fingerprint enrollment" and "fingerprint verification" operating states of the fingerprint acquisition module 11, a physical switch can be added to the signal path between the SOC chip's enable pin EN and the fingerprint acquisition module 11. This switch has two positions, each corresponding to a different signal level for the operating state: when the switch is set to the "enrollment" position, the SOC chip outputs a high-level signal to the fingerprint acquisition module 11 via the enable pin EN, activating it to enter the fingerprint enrollment state; when the switch is set to the "verification" position, the SOC chip outputs a low-level signal to the fingerprint acquisition module 11 via the enable pin EN, activating it to enter the fingerprint verification state. Users can quickly select the desired operating state by manually switching the switch positions.

[0045] like Figure 3 As shown, the fingerprint unlocking circuit 10 also includes a power amplifier module 15 and a speaker assembly 16. The power amplifier module 15 is connected to the Scaler chip in the driver module 13 and the speaker assembly 16, respectively.

[0046] Specifically, to further enhance the user experience and allow users to more intuitively understand the unlock status of the display screen 20, a sound prompt function for screen unlocking is achieved through the collaborative action of the Scaler chip, the power amplifier module 15, and the speaker assembly 16 during the unlocking process of the display screen 20. The specific process is as follows: After receiving the second control signal, the Scaler chip, in addition to controlling the display screen 20 to unlock, also outputs a sound signal to the power amplifier module 15. In this embodiment, the sound signal is transmitted to the power amplifier module 15 via an I2C (Inter-Integrated Circuit) signal line. After receiving the sound signal, the power amplifier module 15 first converts it into an analog signal, then amplifies the analog signal, and finally transmits the processed signal to the speaker assembly 16, ultimately driving the speaker assembly 16 to emit sound, thus prompting the user that the display screen 20 has been unlocked.

[0047] like Figure 4As shown, the power amplifier module 15 includes a power amplifier; the input terminal of the power amplifier is connected to the Scaler chip in the driver module 13, and the two output terminals of the power amplifier are respectively connected to the speaker assembly 16. The speaker assembly 16 includes two speakers, and the two speakers are respectively connected to the two output terminals of the power amplifier.

[0048] Specifically, after receiving the second control signal, the Scaler chip, in addition to controlling the display screen 20 to unlock, also outputs an audio signal to the power amplifier. Upon receiving the audio signal, the power amplifier first converts it into an analog signal, then amplifies the analog signal, and finally transmits the processed signal to the two speakers, ultimately driving them to emit sound to inform the user that the display screen 20 has been unlocked.

[0049] like Figure 5 As shown, the fingerprint unlocking circuit 10 also includes a power module 17, which is connected to the fingerprint acquisition module 11, control module 12, driver module 13, power amplifier module 15, and button module 14. Specifically, the power module 17 provides the necessary power supply voltage to the fingerprint acquisition module 11, control module 12, driver module 13, power amplifier module 15, and button module 14.

[0050] In summary, the fingerprint unlocking circuit 10 provided in this application embodiment enables the display screen 20 to power on via a button trigger. After powering on, the display screen 20 is in a pending unlocking state, and then unlocking is achieved through fingerprint recognition. Compared with the prior art, this application can enter the operating system via fingerprint recognition after the device is powered on, eliminating the need for the user to remember a password or carry a card for verification. This improves user convenience and enhances the security of device management.

[0051] This application embodiment also provides an interactive system, including a display screen 20 and the aforementioned fingerprint unlocking circuit 10. The fingerprint unlocking circuit 10 is connected to the display screen 20 and disposed inside the display screen 20. A fingerprint acquisition area corresponding to the fingerprint unlocking circuit 10 is provided on the bezel of the display screen 20. The display screen 20 is used to power on upon receiving a power-on signal and to unlock the screen upon receiving an unlock signal.

[0052] The fingerprint unlocking circuit 10 is used to unlock the fingerprint based on the fingerprint information on the fingerprint acquisition area. Specifically, when the user places his finger on the fingerprint acquisition area, the fingerprint information is transmitted through the fingerprint acquisition area to the fingerprint acquisition module 11 in the fingerprint unlocking circuit 10, so that the fingerprint acquisition module 11 can generate a fingerprint packet based on the fingerprint information.

[0053] This application also provides an electronic device including the interactive system described above. Since the electronic device provided in this application employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated upon further here. The electronic device provided in this application can be any electronic device including the above interactive system.

[0054] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A fingerprint unlocking circuit, characterized in that, It includes a fingerprint acquisition module, a control module, a driver module, and a button module. The control module is connected to the fingerprint acquisition module, the driver module, and the button module, respectively. The driver module is used to connect to the display screen. The button module is used to output a level signal to the control module when it is triggered; The control module is used to output a first control signal to the drive module according to the level signal; the drive module is used to output a power-on signal to the display screen according to the first control signal to control the display screen to power on. After the display screen is powered on, the fingerprint acquisition module is used to acquire fingerprint information and generate a fingerprint packet; the control module is also used to read the fingerprint packet and verify the fingerprint packet. After successful verification, it outputs a second control signal to the driving module; the driving module is also used to output an unlock signal to the display screen according to the second control signal to control the display screen to unlock.

2. The fingerprint unlocking circuit according to claim 1, characterized in that, The control module includes a control unit and a storage unit, and the control unit is connected to the storage unit, the fingerprint acquisition module, the driver module and the button module respectively; The storage unit is used to store the fingerprint database; the control unit is used to obtain the fingerprint database from the storage unit after reading the fingerprint packet, and to verify the fingerprint packet according to the fingerprint database. After successful verification, the control unit outputs a second control signal to the driver module.

3. The fingerprint unlocking circuit according to claim 2, characterized in that, The control unit includes a SOC chip, which is connected to the storage unit, the fingerprint acquisition module, the driver module, and the button module.

4. The fingerprint unlocking circuit according to claim 2, characterized in that, The storage unit includes a ROM memory, which is connected to the control unit.

5. The fingerprint unlocking circuit according to claim 1, characterized in that, The driving module includes a Scaler chip, which is connected to both the control module and the display screen.

6. The fingerprint unlocking circuit according to any one of claims 1-5, characterized in that, The fingerprint unlocking circuit also includes a power amplifier module and a speaker assembly, wherein the power amplifier module is connected to the driver module and the speaker assembly respectively; The driving module is further configured to output a sound signal to the power amplifier module after receiving the second control signal; the power amplifier module is configured to process the sound signal and transmit the processed sound signal to the speaker assembly to drive the speaker assembly to work.

7. The fingerprint unlocking circuit according to claim 6, characterized in that, The power amplifier module includes a power amplifier; the input terminal of the power amplifier is connected to the drive module, and the two output terminals of the power amplifier are respectively connected to the speaker assembly.

8. The fingerprint unlocking circuit according to claim 6, characterized in that, The fingerprint unlocking circuit also includes a power module, which is connected to the fingerprint acquisition module, the control module, the drive module, the power amplifier module and the button module respectively. The power module is used to provide the power supply voltage required for the operation of the fingerprint acquisition module, the control module, the drive module, the power amplifier module and the button module.

9. An interactive system, characterized in that, The device includes a display screen and a fingerprint unlocking circuit as described in any one of claims 1-8, wherein the fingerprint unlocking circuit is connected to the display screen and disposed inside the display screen, and a fingerprint acquisition area corresponding to the fingerprint unlocking circuit is provided on the bezel of the display screen; the display screen is used to power on upon receiving a power-on signal and to unlock the screen upon receiving an unlock signal.

10. An electronic device, characterized in that, Including the interactive system described in claim 9.

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