Storage circuits and storage devices with FindMy function

Abstract

This utility model relates to the field of storage device technology, and more particularly to a storage circuit and storage device with a FindMy function. A switch module is connected to a fingerprint unlock module, a data transmission interface, and a storage module. The data transmission interface is connected to the storage module and is also used to connect to an external device. The fingerprint unlock module transmits a generated user authentication signal to the switch module when the acquired current fingerprint signal matches a preset fingerprint signal. The switch module, upon receiving the user authentication signal, transmits the operating voltage provided by the external device through the data transmission interface to the storage module for power supply. The storage module, upon receiving the operating voltage, transmits data with the external device through the data transmission interface. Compared to existing technologies, this utility model allows users to transmit data with external devices after unlocking with their fingerprint.

Description

Technical Field

[0001] This utility model relates to the field of storage device technology, and in particular to a storage circuit and storage device with FindMy function. Background Technology

[0002] In today's digital age, the security of storage devices (such as USB flash drives) is a major concern for users. Existing storage devices have some obvious security vulnerabilities and technical limitations, especially in terms of data protection and user privacy.

[0003] Existing storage devices typically use a plug-and-play approach, allowing users to directly access data stored on the device simply by plugging it into an external device (such as a computer or laptop). This approach makes it vulnerable to misuse if the storage device is accidentally lost. Therefore, protecting the privacy and security of users' storage devices is a pressing technical issue that needs to be addressed. Utility Model Content

[0004] The main purpose of this utility model is to provide a storage circuit and storage device with FindMy function, aiming to solve the technical problem of how to protect the privacy and security of users' storage devices.

[0005] To achieve the above objectives, this utility model proposes a storage circuit with FindMy function, the storage circuit including: a fingerprint unlocking module, a switch module, a storage module and a data transmission interface;

[0006] The switch module is connected to the fingerprint unlock module, the data transmission interface and the storage module respectively. The data transmission interface is connected to the storage module and is also used to connect to external devices.

[0007] The fingerprint unlocking module is used to transmit the generated user authentication signal to the switch module when the current fingerprint signal collected is the same as the preset fingerprint signal.

[0008] The switching module is used to transmit the operating voltage provided by the external device through the data transmission interface to the storage module for power supply when the user authentication signal is received;

[0009] The storage module is used to transmit data with the external device through the data transmission interface after receiving the operating voltage.

[0010] In one embodiment, the fingerprint unlocking module includes: a fingerprint acquisition unit, a fingerprint storage unit, and a fingerprint unlocking unit;

[0011] The fingerprint unlocking unit is connected to the fingerprint acquisition unit, the fingerprint storage unit, and the switch module, respectively;

[0012] The fingerprint acquisition unit is used to acquire the user's current fingerprint signal and transmit the current fingerprint signal to the fingerprint unlocking unit;

[0013] The fingerprint unlocking unit is used to transmit the generated user authentication signal to the switch module when the current fingerprint signal is the same as the preset fingerprint signal pre-stored in the fingerprint storage unit.

[0014] In one embodiment, the fingerprint acquisition unit includes: a fingerprint acquisition chip and a first capacitor to a fourth capacitor;

[0015] The first power supply terminal of the fingerprint acquisition chip is connected to the second terminal of the first capacitor. The second power supply terminal of the fingerprint acquisition chip is connected to the first terminal of the second capacitor and the chip power supply. The third power supply terminal of the fingerprint acquisition chip is connected to the first terminal of the third capacitor and the chip power supply. The first acquisition terminal of the fingerprint acquisition chip is connected to the first terminal of the fourth capacitor. The second acquisition terminal of the fingerprint acquisition chip is connected to the second terminal of the fourth capacitor. The recognition terminal of the fingerprint acquisition chip is connected to the chip power supply. The first communication terminal, the second communication terminal, the clock terminal, the chip select terminal, the interrupt terminal, and the reset terminal of the fingerprint acquisition chip are all connected to the fingerprint unlocking unit. The first ground terminal of the fingerprint acquisition chip is connected to the second terminal of the second capacitor. The first ground terminal, the second ground terminal, the first open selection terminal, the fifth open selection terminal, the sixth open selection terminal, the eighth open selection terminal, and the test terminal of the fingerprint acquisition chip are all grounded.

[0016] The first terminal of the first capacitor is grounded, the first terminal of the second capacitor is connected to the chip power supply, and the second terminal of the third capacitor is grounded.

[0017] In one embodiment, the fingerprint storage unit includes: a fingerprint storage chip, a first resistor, a second resistor, and a fifth capacitor;

[0018] The chip select terminal, the first communication terminal, the second communication terminal, and the clock terminal of the fingerprint storage chip are all connected to the fingerprint unlocking unit. The protection terminal of the fingerprint storage chip is connected to the second terminal of the first resistor. The holding terminal of the fingerprint storage chip is connected to the second terminal of the second resistor. The power supply terminal of the fingerprint storage chip is connected to the first terminal of the fifth capacitor and the chip power supply, respectively. The first ground terminal and the second ground terminal of the fingerprint storage chip are both grounded. The first terminal of the first resistor and the first terminal of the second resistor are both connected to the chip power supply. The second terminal of the first capacitor is grounded.

[0019] In one embodiment, the fingerprint unlocking unit includes: a fingerprint unlocking chip, a diode, a third resistor, a fourth resistor, and a sixth to eleventh capacitor;

[0020] The analog-to-digital power supply terminal of the fingerprint unlocking chip is connected to the first power supply terminal of the fingerprint unlocking chip, the first terminal of the sixth capacitor, and the chip power supply, respectively. The second power supply terminal of the fingerprint unlocking chip is connected to the first terminal of the diode, the first terminal of the seventh capacitor, the first terminal of the eighth capacitor, and the chip power supply, respectively. The third power supply terminal of the fingerprint unlocking chip is connected to the first terminal of the ninth capacitor. The switch output terminal of the fingerprint unlocking chip is connected to the switch module. The memory chip select terminal of the fingerprint unlocking chip is connected to the fingerprint storage unit. The USB power input terminal of the fingerprint unlocking chip is connected to the first terminal of the tenth capacitor and the chip power supply, respectively. The power output terminal B is connected to the first terminal of the eleventh capacitor; the acquisition clock terminal of the fingerprint unlocking chip is connected to the first terminal of the third resistor; the first acquisition communication terminal of the fingerprint unlocking chip is connected to the fingerprint acquisition unit; the acquisition chip select terminal of the fingerprint unlocking chip is connected to the first terminal of the fourth resistor and the fingerprint acquisition unit respectively; the second acquisition communication terminal of the fingerprint unlocking chip is connected to the fingerprint acquisition unit; the storage clock terminal of the fingerprint unlocking chip is connected to the fingerprint storage unit; both the first and second storage communication terminals of the fingerprint unlocking chip are connected to the fingerprint storage unit; and the ground terminal of the fingerprint unlocking chip is grounded.

[0021] The second terminal of the sixth capacitor is grounded. The second terminal of the diode is connected to the second terminals of the seventh capacitor, the eighth capacitor, and the ninth capacitor, respectively. The second terminal of the diode is grounded. The second terminal of the tenth capacitor is grounded. The second terminal of the eleventh capacitor is grounded. The second terminal of the third resistor is connected to the fingerprint acquisition module. The second terminal of the fourth resistor is connected to the chip power supply.

[0022] In one embodiment, the switching module includes: a voltage regulator unit and a switching unit;

[0023] The voltage regulator unit is connected to the data transmission interface and the switching unit, respectively, and the switching unit is connected to the fingerprint unlocking module and the storage module, respectively.

[0024] The voltage regulating unit is used to regulate the operating voltage transmitted by the external device through the data transmission interface, and to transmit the regulated operating voltage to the switching unit.

[0025] The switching unit is used to transmit the regulated operating voltage to the storage module for power supply when the user authentication signal is received.

[0026] In one embodiment, the voltage regulator unit includes: a voltage regulator chip, a fifth resistor, and twelfth to fifteenth capacitors;

[0027] The input terminal of the voltage regulator chip is connected to the data transmission interface, the first terminal of the fifth resistor, the first terminal of the twelfth capacitor, and the first terminal of the thirteenth capacitor, respectively. The enable terminal of the voltage regulator chip is connected to the second terminal of the fifth resistor. The output terminal of the voltage regulator chip is connected to the switching unit, the first terminal of the fourteenth capacitor, and the first terminal of the fifteenth capacitor, respectively. The first ground terminal and the second ground terminal of the voltage regulator chip are both grounded.

[0028] The second terminals of the twelfth capacitor to the fourteenth capacitor are all grounded, and the second terminal of the fifteenth capacitor is connected to the second terminal of the fourteenth capacitor.

[0029] In one embodiment, the switching unit includes: a switching transistor and a sixth resistor;

[0030] The drain of the switching transistor is connected to the voltage regulator unit, the source of the switching transistor is connected to the storage module, the gate of the switching transistor is connected to the fingerprint unlocking module and the first end of the sixth resistor, and the second end of the sixth resistor is grounded.

[0031] In one embodiment, the storage circuit further includes: a positioning module and a button;

[0032] The positioning module is connected to both the fingerprint unlocking module and the button.

[0033] The button is used to transmit a generated start signal to the positioning module when triggered by the user.

[0034] The fingerprint unlocking module is also used to transmit the generated user authentication signal to the positioning module when the current fingerprint signal collected is the same as the preset fingerprint signal.

[0035] The positioning module is used to activate the positioning function when it receives the start signal and the user authentication signal.

[0036] In addition, to achieve the above objectives, this utility model also proposes a storage device, which includes a storage circuit with the FindMy function as described above.

[0037] This invention proposes a storage circuit with a FindMy function. The storage circuit includes a fingerprint unlocking module, a switch module, a storage module, and a data transmission interface. The switch module is connected to the fingerprint unlocking module, the data transmission interface, and the storage module. The data transmission interface is connected to the storage module and is also used to connect to an external device. The fingerprint unlocking module transmits a generated user authentication signal to the switch module when the acquired current fingerprint signal matches a preset fingerprint signal. The switch module, upon receiving the user authentication signal, transmits the operating voltage provided by the external device through the data transmission interface to the storage module for power supply. The storage module, upon receiving the operating voltage, transmits data with the external device through the data transmission interface.

[0038] Because this invention incorporates a storage circuit within the storage device, the fingerprint unlocking module within the storage circuit transmits a generated user authentication signal to the switch module when the acquired current fingerprint signal matches a preset fingerprint signal. Upon receiving the user authentication signal, the switch module transmits the operating voltage provided by the external device through the data transmission interface to the storage module for power supply. After receiving the operating voltage, the storage module then transmits data with the external device through the data transmission interface. Compared to existing plug-and-play storage devices, where users simply plug the storage device into an external device (such as a computer or laptop) to directly access the data stored on the storage device, this invention only enables the switch module to transmit the operating voltage provided by the external device through the data transmission interface to the storage module for power supply after the user unlocks the device with their fingerprint. This allows the storage module to transmit data with the external device, protecting the privacy and security of the user's stored data. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of the first embodiment of the storage circuit proposed in this utility model.

[0041] Figure 2 The circuit diagram of the fingerprint acquisition unit in the first embodiment of the storage circuit proposed in this utility model is shown.

[0042] Figure 3 The circuit diagram of the fingerprint storage unit in the first embodiment of the storage circuit proposed in this utility model is shown.

[0043] Figure 4 The circuit diagram of the fingerprint unlocking unit in the first embodiment of the storage circuit proposed in this utility model is shown.

[0044] Figure 5 This is a schematic diagram of the structure of the second embodiment of the storage circuit proposed in this utility model.

[0045] Figure 6 The circuit diagram of the voltage regulator unit and the switching unit in the second embodiment of the storage circuit proposed in this utility model embodiment;

[0046] Figure 7 This is a schematic diagram of the structure of the third embodiment of the storage circuit proposed in this utility model.

[0047] Figure 8 The circuit schematic diagram of the Bluetooth unit in the third embodiment of the storage circuit proposed in this utility model embodiment;

[0048] Figure 9 The circuit diagram of the positioning unit in the third embodiment of the storage circuit proposed in this utility model is shown.

[0049] Explanation of icon numbers:

[0050] 1 Fingerprint unlock module 62 Positioning unit 11 fingerprint acquisition unit 7 Button 12 Fingerprint storage unit R1~R13 First resistor to thirteenth resistor 13 Fingerprint unlocking unit C1~C33 Capacitors 1 through 33 2 Switch module L1~L2 First inductor to second inductor 21 voltage regulator unit Y Crystal Oscillator 22 Switching unit U1 fingerprint chip 3 Storage module U2 Fingerprint storage chip 4 Data transmission interface U3 Fingerprint unlocking chip 5 External devices U4 voltage regulator chip 6 Positioning module U5 Bluetooth chip 61 Bluetooth unit U6 Positioning chip

[0051] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0052] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this utility model.

[0056] It is important to note that in today's digital age, the security of storage devices (such as USB flash drives) is a major concern for users. Existing storage devices have some obvious security vulnerabilities and technical limitations, especially in terms of data protection and user privacy.

[0057] Existing storage devices typically use a plug-and-play approach, allowing users to directly access data stored on the device simply by plugging it into an external device (such as a computer or laptop). This approach makes it vulnerable to misuse if the storage device is accidentally lost. Therefore, protecting the privacy and security of users' storage devices is a pressing technical issue that needs to be addressed.

[0058] To address the aforementioned technical issues, this embodiment provides a storage circuit with a FindMy function. This embodiment includes a storage circuit within the storage device. When the fingerprint unlocking module in the storage circuit detects a match between the current fingerprint signal and a preset fingerprint signal, it transmits a generated user authentication signal to a switch module. Upon receiving the user authentication signal, the switch module supplies power to the storage module via the data transmission interface provided by the external device. Upon receiving the power, the storage module then transmits data with the external device through the data transmission interface. Compared to existing plug-and-play storage devices, where users simply plug the storage device into an external device (such as a computer or laptop) to directly access the data stored on the storage device, this embodiment only supplies power to the storage module via the data transmission interface after the user unlocks the device with their fingerprint. This allows the storage module to transmit data with the external device, protecting the privacy and security of the user's stored data.

[0059] For ease of understanding, the following is combined with Figures 1 to 9 The storage circuit with FindMy function provided in the embodiments of this utility model will be described in detail.

[0060] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the storage circuit proposed in this utility model.

[0061] like Figure 1 As shown, in this embodiment, the storage circuit of the storage device may include: a fingerprint unlocking module 1, a switch module 2, a storage module 3, and a data transmission interface 4;

[0062] The switch module 2 is connected to the fingerprint unlocking module 1, the data transmission interface 4, and the storage module 3 respectively. The data transmission interface 4 is connected to the storage module 3 and is also used to connect to an external device 5.

[0063] It should be noted that the fingerprint unlocking module 1 described above can be a module that integrates fingerprint storage, fingerprint matching, and fingerprint unlocking functions. The switch module 2 described above can be a module with a conduction function. The storage module 3 described above can be any module in a traditional storage device that requires data storage through the data transmission interface 4, such as a storage chip or memory used for data storage in a storage device. The data transmission interface 4 described above can be an interface used to physically connect the storage module 3 within the storage device to an external device 5.

[0064] It is understood that the aforementioned external device 5 can be any device with data transmission capabilities, such as a computer, mobile phone, or tablet. Therefore, in this embodiment, the aforementioned data transmission interface 4 can be any data transmission interface that can be adapted to different types or models of the aforementioned external devices 5, such as a Type-C interface or a USB interface.

[0065] It should also be emphasized that the above-mentioned storage device can be any storage device with data transmission and storage functions, such as a USB flash drive, hard drive and other portable storage devices. This embodiment uses a USB flash drive for illustration.

[0066] To enable data transfer between storage module 3 and external device 5 only after the user unlocks the device with their fingerprint, such as... Figure 1 As shown, in this embodiment, the fingerprint unlocking module 1 is used to transmit the generated user authentication signal to the switch module 2 when the current fingerprint signal collected is the same as the preset fingerprint signal.

[0067] It should be noted that the aforementioned current fingerprint signal can be the fingerprint signal of the user currently using the storage device, the fingerprint signal of the holder, or the fingerprint signal of a non-holder. It can be understood that the aforementioned preset fingerprint signal can be the fingerprint signal pre-stored in the storage device by the holder, or it can be understood as the fingerprint signal of the owner of the storage device.

[0068] Understandably, the aforementioned users can be either storage device owners or non-owners (i.e., pickers).

[0069] The aforementioned switch module 2 is used to transmit the operating voltage provided by the aforementioned external device 5 through the aforementioned data transmission interface 4 to the aforementioned storage module 3 for power supply when the user authentication signal is received.

[0070] It is understood that the aforementioned user authentication signal may be a signal generated by the aforementioned fingerprint unlocking module 1 when the current fingerprint signal of the aforementioned user is the same as the aforementioned preset fingerprint signal.

[0071] It should be noted that the aforementioned operating voltage can be the voltage required for the storage module 3 to operate. The specific voltage value can be set according to actual conditions, and this embodiment does not impose any limitations on it. In this embodiment, the voltage required for the operation of the storage module 3 can be provided through the aforementioned external device 5.

[0072] The aforementioned storage module 3 is used to transmit data with the aforementioned external device 5 through the aforementioned data transmission interface 4 after receiving the aforementioned operating voltage.

[0073] It is understood that in this embodiment, the data transmission interface 4 may not only be provided with a port for providing the above-mentioned operating voltage, but also with a port for data transmission. The data transmission between the storage module 3 and the external device 5 needs to be completed through the port for data transmission in the data transmission interface 4.

[0074] In practice, when a user simply inserts a USB flash drive into a computer or mobile phone, the computer or mobile phone cannot transmit data or interact with the USB flash drive. At this time, the USB flash drive is still in an inactive state (i.e., it does not receive working voltage for power supply). Only when the user unlocks the USB flash drive with their fingerprint (i.e., when the current fingerprint signal collected by the fingerprint unlocking module 1 is the same as the preset fingerprint signal, the generated user authentication signal is transmitted to the switch module 2, and the switch module 2 transmits the working voltage provided by the external device 5 through the data transmission interface 4 to the storage module 3 for power supply) can the USB flash drive transmit data with the computer.

[0075] Furthermore, in order to perform fingerprint unlock authentication, continue as follows Figure 1 As shown, in this embodiment, the fingerprint unlocking module 1 includes: a fingerprint acquisition unit 11, a fingerprint storage unit 12, and a fingerprint unlocking unit 13;

[0076] The fingerprint unlocking unit 13 is connected to the fingerprint acquisition unit 11, the fingerprint storage unit 12, and the opening module 2, respectively.

[0077] It should be noted that the fingerprint acquisition unit 11 can be a unit with fingerprint acquisition function, such as a fingerprint collector, fingerprint sensor, or fingerprint acquisition chip. The fingerprint storage unit 12 can be a storage unit for storing fingerprint signals, such as a fingerprint memory or fingerprint storage chip. The fingerprint unlocking unit 13 can be a unit for comparing or matching the current fingerprint signal with a preset fingerprint signal, such as a fingerprint comparator or fingerprint unlocking chip.

[0078] The fingerprint acquisition unit 11 is used to acquire the user's current fingerprint signal and transmit the current fingerprint signal to the fingerprint unlocking unit 13;

[0079] The fingerprint unlocking unit 13 is used to transmit the generated user authentication signal to the switch module 2 when the current fingerprint signal is the same as the preset fingerprint signal pre-stored in the fingerprint storage unit 12.

[0080] In a specific implementation, when the user has pre-stored the selected finger's fingerprint, the fingerprint storage unit 12 acquires the preset fingerprint signal. When the user needs to use the USB flash drive, they press their finger on the fingerprint acquisition unit 11. At this time, the user's current fingerprint is generated by the fingerprint acquisition unit 11 and transmitted to the fingerprint unlocking unit 13. The fingerprint unlocking unit 13 compares or matches the current fingerprint signal with the preset fingerprint signal in the fingerprint storage unit 12. When the current fingerprint signal is the same as the preset fingerprint signal, the generated user authentication signal is transmitted to the switch module 2.

[0081] Furthermore, in order to collect the user's current fingerprint signal, such as Figure 2 As shown, Figure 2 This is a circuit diagram of the fingerprint acquisition unit in the first embodiment of the storage circuit proposed in this utility model. In this embodiment, the fingerprint acquisition unit 11 includes: a fingerprint acquisition chip U1 and first capacitors C1 to fourth capacitors C4;

[0082] The first power supply terminal of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The first pin of U1 is connected to the second terminal of the first capacitor C1, and the second power supply terminal of the fingerprint acquisition chip U1 (i.e., Figure 2 The second pin of U1 is connected to the first terminal of the second capacitor C2 and the chip power supply, respectively. The third power supply terminal of the fingerprint acquisition chip U1 (i.e. Figure 2 The twentieth pin of U1 is connected to the first terminal of the third capacitor C3 and the power supply of the aforementioned chip, respectively. The first acquisition terminal of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The seventeenth pin of U1 is connected to the first terminal of the fourth capacitor C4, and the second acquisition terminal of the fingerprint acquisition chip U1 (i.e. Figure 2 The sixteenth pin of U1 is connected to the second terminal of the fourth capacitor C4 mentioned above.

[0083] The fingerprint recognition end of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 Pin 15 of U1 is connected to the power supply of the aforementioned chip, and the first communication terminal of the aforementioned fingerprint acquisition chip U1 (i.e., Figure 2 The fifth pin of U1), and the second communication terminal of the fingerprint acquisition chip U1 mentioned above (i.e. Figure 2 The sixth pin of U1), and the clock terminal of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The fourth pin of U1), and the chip select pin of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The seventh pin of U1), and the interrupt terminal of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The eighth pin of U1) and the reset pin of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2The ninth pin of U1 is connected to the fingerprint unlocking unit 13 mentioned above.

[0084] The first ground terminal of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The third pin of U1 is connected to the second terminal of the second capacitor C2, and the first ground terminal and the second ground terminal of the fingerprint acquisition chip U1 are connected to each other. Figure 2 Pin 26 of U1), the first unselected pin of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The tenth pin of U1), and the fifth open-ended pin of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 Pin 22 of U1), the sixth open selection pin of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 Pin 23 of U1), the eighth open selection pin of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 Pin 25 of U1 and the test terminal of the aforementioned fingerprint acquisition chip U1 (i.e. Figure 2 The twelfth pin of U1 is grounded.

[0085] The first terminal of the first capacitor C1 is grounded, the first terminal of the second capacitor C2 is connected to the power supply of the chip, and the second terminal of the third capacitor C3 is grounded.

[0086] It should be noted that the fingerprint acquisition chip U1 mentioned above can be any chip used to acquire fingerprint information, such as the ICNF7332 fingerprint acquisition chip. Of course, other models can also be used, and this embodiment does not impose any restrictions on this. The power supply of the above chip (i.e. Figure 2 The 3V3 in the middle can be the power supply required for the operation of the fingerprint acquisition chip. It can be obtained by transformer, or it can be obtained by other means. This embodiment does not limit this.

[0087] In a specific implementation, the first acquisition end and the second acquisition end of the fingerprint acquisition chip U1 are capacitive sensors used for capacitive fingerprint recognition, thereby obtaining the current fingerprint signal (i.e., it can be obtained after the user presses the fingerprint). The fingerprint acquisition chip U1 transmits the current fingerprint signal to the fingerprint unlocking unit 13 through the first communication end and the second communication end of the fingerprint acquisition chip U1.

[0088] Furthermore, in order to store the user's preset fingerprint signal, such as Figure 3 As shown, Figure 3 This is a circuit diagram of the fingerprint storage unit in the first embodiment of the storage circuit proposed in this utility model. In this embodiment, the fingerprint storage unit 12 includes: a fingerprint storage chip U2, a first resistor R1, a second resistor R2, and a fifth capacitor C5;

[0089] The chip select pin of the aforementioned fingerprint storage chip U2 (i.e. Figure 3 The first pin of U2), the first communication terminal of the aforementioned fingerprint storage chip U2 (i.e. Figure 3 The second pin of U2), the second communication terminal of the aforementioned fingerprint storage chip U2 (i.e. Figure 3 The fifth pin of U2), and the clock terminal of the aforementioned fingerprint storage chip U2 (i.e. Figure 3 The sixth pin of U2 is connected to the fingerprint unlocking unit 13 mentioned above.

[0090] The protection terminal of the aforementioned fingerprint storage chip U2 (i.e. Figure 3 The third pin of U2 is connected to the second terminal of the first resistor R1, and the holding terminal of the fingerprint storage chip U2 (i.e., Figure 3 The seventh pin of U2 is connected to the second terminal of the second resistor R2, and the power supply terminal of the fingerprint storage chip U2 (i.e., Figure 3 The eighth pin of U2 is connected to the first terminal of the fifth capacitor C5 and the power supply of the aforementioned chip, respectively. The first ground terminal of the aforementioned fingerprint storage chip U2 (i.e. Figure 3 The fourth pin of U2) and the second ground terminal of the fingerprint storage chip U2 mentioned above (i.e. Figure 3 The GND1 of U2 is grounded, the first end of the first resistor R1 and the first end of the second resistor R2 are both connected to the power supply of the chip, and the second end of the first capacitor is grounded.

[0091] It should be noted that the fingerprint storage chip U2 mentioned above can be any chip used to store user-preset fingerprint information, such as the fingerprint storage chip with model number XT25F32-TDFN8_2X3. Of course, other models can also be used, and this embodiment does not limit this.

[0092] In the specific implementation, the fingerprint storage chip U2 transmits the preset fingerprint signal to the fingerprint unlocking unit 13 through its first communication terminal and its second communication terminal.

[0093] Furthermore, in order to perform fingerprint unlocking, such as Figure 4 As shown, Figure 4 This is a circuit diagram of the fingerprint unlocking unit in the first embodiment of the storage circuit proposed in this utility model. In this embodiment, the fingerprint unlocking unit 13 includes: a fingerprint unlocking chip U3, a diode D, a third resistor R3, a fourth resistor R4, and sixth capacitors C6 to eleventh capacitors C11;

[0094] The analog-to-digital power supply terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4 The first pin of U3 is connected to the first power supply terminal of the fingerprint unlocking chip U3. Figure 4The second pin of U3), the first terminal of the sixth capacitor C6, and the power supply connection of the aforementioned chip are all connected to the second power supply terminal of the aforementioned fingerprint unlocking chip U3. Figure 4 The seventh pin of U3 is connected to the first terminal of diode D, the first terminal of the seventh capacitor C7, the first terminal of the eighth capacitor C8, and the power supply of the chip, respectively. The third power supply terminal of the fingerprint unlocking chip U3 is... Figure 4 The eighth pin of U3 is connected to the first terminal of the ninth capacitor C9, and the switch output terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4 The twelfth pin of U3 is connected to the aforementioned switch module 2.

[0095] The memory chip select terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4 Pin 12 of U3 is connected to the fingerprint storage unit 12, and the USB power input terminal of the fingerprint unlocking chip U3 is connected to the fingerprint storage unit 12. Figure 4 Pin 17 of U3 is connected to the first terminal of the tenth capacitor C10 and the power supply of the aforementioned chip, respectively. The USB power output terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4 Pin 18 of U3 is connected to the first terminal of the eleventh capacitor C11, and the acquisition clock terminal of the fingerprint unlocking chip U3 is connected to the first terminal of the eleventh capacitor C11. Figure 4 The 26th pin of U3 is connected to the first end of the third resistor R3, and the first acquisition and communication terminal of the fingerprint unlocking chip U3 is connected to the first end of the third resistor R3. Figure 4 Pin 27 of U3 is connected to the fingerprint acquisition unit 11, and the acquisition chip select pin of the fingerprint unlocking chip U3 is connected to the fingerprint acquisition unit 11. Figure 4 The 28th pin of U3 is connected to the first terminal of the fourth resistor R4 and the fingerprint acquisition unit 11, respectively. The second acquisition communication terminal of the fingerprint unlocking chip U3 ( Figure 4 The 29th pin of U3 is connected to the fingerprint acquisition unit 11 mentioned above.

[0096] The storage clock terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4 Pin 30 of U3 is connected to the fingerprint storage unit 12, and the first storage communication terminal of the fingerprint unlocking chip U3 is connected to the fingerprint storage unit 12. Figure 4 Pin 31 of U3 and the second storage communication terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4 The 32nd pin of U3 is connected to the fingerprint storage unit 12. It should also be emphasized that the fingerprint unlocking chip U3 receives the preset fingerprint signal transmitted by the fingerprint storage unit 12 through the first storage communication terminal and the second storage communication terminal of the fingerprint unlocking chip U3.

[0097] The ground terminal of the aforementioned fingerprint unlocking chip U3 ( Figure 4The 33rd pin of U3 is grounded, the second end of the sixth capacitor C6 is grounded, the second end of the diode D is connected to the second end of the seventh capacitor C7, the second end of the eighth capacitor C8 and the second end of the ninth capacitor C9 respectively, the second end of the diode D is grounded, the second end of the tenth capacitor C10 is grounded, the second end of the eleventh capacitor C11 is grounded, the second end of the third resistor R3 is connected to the fingerprint acquisition module, and the second end of the fourth resistor R4 is connected to the chip power supply.

[0098] It should be noted that the fingerprint unlocking chip U3 mentioned above can be any chip that compares or matches the current fingerprint signal with the preset fingerprint signal, such as the fingerprint unlocking chip with model number CCM4201S. Of course, other models can also be used, and this embodiment does not limit this.

[0099] It should be emphasized that the fingerprint unlocking chip U3 transmits the user authentication signal to the switch module 2 through its switch output terminal. Specifically, it outputs the signal only when the current fingerprint signal matches the preset fingerprint signal, and does not output it when they do not match. The fingerprint unlocking chip U3 receives the current fingerprint signal transmitted by the fingerprint acquisition unit 11 through its first and second acquisition communication terminals.

[0100] In a specific implementation, the first acquisition communication terminal and the second acquisition communication terminal of the fingerprint unlocking chip U3 can receive the current fingerprint signal, and the first storage communication terminal and the second storage communication terminal of the fingerprint unlocking chip U3 can receive the preset fingerprint signal. The fingerprint unlocking chip U3 transmits the user authentication signal to the switch module 2 through the switch output terminal of the fingerprint unlocking chip U3, that is, it outputs when the current fingerprint signal is the same as the preset fingerprint signal, and does not output when they are different.

[0101] In this embodiment, the storage circuit can be configured with a fingerprint unlocking module 1. When the collected current fingerprint signal matches the preset fingerprint signal, the generated user authentication signal is transmitted to the switch module 2. Upon receiving the user authentication signal, the switch module 2 transmits the operating voltage provided by the external device 5 through the data transmission interface 4 to the storage module 3 for power supply. After receiving the operating voltage, the storage module 3 transmits data with the external device 5 through the data transmission interface 4. Compared to existing storage devices that use a plug-and-play approach, where users only need to plug the storage device into the external device 5 (such as a computer or laptop) to directly access the data stored in the storage device, this embodiment only enables the switch module 2 to transmit the operating voltage provided by the external device 5 through the data transmission interface to the storage module 3 for power supply after the user unlocks the device with their fingerprint, thereby allowing the storage module 3 to transmit data with the external device 5 and protecting the privacy and security of the user's storage device.

[0102] Reference Figure 5 , Figure 5 This is a schematic diagram of the second embodiment of the storage circuit proposed in this utility model.

[0103] Based on the above embodiments, a second embodiment of the present invention is proposed. Considering that the storage module 3 needs electricity to activate its working state, in order to supply power to the storage module 3, as follows: Figure 5 As shown, in this embodiment, the switching module 2 includes: a voltage regulator unit 21 and a switching unit 22;

[0104] The voltage regulator unit 21 is connected to the data transmission interface 4 and the switch unit 22 respectively, and the switch unit 22 is connected to the fingerprint unlocking module 1 and the storage module 3 respectively;

[0105] It should be noted that the voltage regulator unit 21 can be a chip or circuit with voltage regulation function, such as a voltage regulator chip or voltage regulator circuit. The switching unit 22 can be a unit with conduction function.

[0106] The voltage stabilizing unit 21 is used to stabilize the working voltage transmitted by the external device 5 through the data transmission interface 4, and transmit the stabilizing working voltage to the switching unit 22.

[0107] The switching unit 22 is used to transmit the regulated operating voltage to the storage module 3 for power supply when the user authentication signal is received.

[0108] Understandably, the aforementioned switch unit 22 will not conduct the circuit between the transformer unit 21 and the storage module 3 when it does not receive the aforementioned user authentication signal, and will only conduct it when it receives the signal.

[0109] It is also understandable that since the operating voltage provided by the external device 5 may not necessarily match the voltage required for the operation of the storage module 3, the operating voltage provided by the external device 5 can be regulated by the voltage regulator unit 21 described above and adjusted to a voltage suitable for the operation of the storage module 3.

[0110] In a specific implementation, when a user connects the USB flash drive to a computer, the voltage regulator unit 21 regulates the operating voltage transmitted by the computer through the data transmission interface 4 (that is, adjusts the operating voltage to the operating voltage applicable to the storage module 3), and transmits the regulated operating voltage to the switching unit 22. The switching unit 22 only connects the data transmission interface 4 and the storage module 3 when it receives the user authentication signal (that is, determines that the user is the holder of the USB flash drive), and transmits the regulated operating voltage to the storage module 3 for power supply.

[0111] Furthermore, in order to regulate the operating voltage transmitted by external device 5, such as... Figure 6 As shown, Figure 6 This is a circuit diagram of the voltage regulator unit and the switching unit in the second embodiment of the storage circuit proposed in this utility model. In this embodiment, the voltage regulator unit 21 consists of: a voltage regulator chip U4, a fifth resistor R5, and twelfth capacitors C12 to fifteenth capacitors C15;

[0112] The input terminal of the aforementioned voltage regulator chip U4 ( Figure 6 The fourth pin of the voltage regulator chip U4 is connected to the data transmission interface 4, the first terminal of the fifth resistor R5, the first terminal of the twelfth capacitor C12, and the first terminal of the thirteenth capacitor C13, respectively. The enable terminal of the voltage regulator chip U4 is... Figure 6 The third pin of U4 is connected to the second terminal of the fifth resistor R5, and the output terminal of the voltage regulator chip is... Figure 6 The first pin of the voltage regulator chip U4 is connected to the first terminal of the aforementioned switch unit 22, the first terminal of the fourteenth capacitor C14, and the first terminal of the aforementioned fifteenth capacitor C15, respectively. The first ground terminal of the aforementioned voltage regulator chip U4 ( Figure 6 The second pin of U4 and the second ground terminal of the aforementioned voltage regulator chip U4 are both ( Figure 6 The fifth pin of U4 is grounded;

[0113] The second terminals of the twelfth capacitor C12 to the fourteenth capacitor C13 are all grounded, and the second terminal of the fifteenth capacitor C15 is connected to the second terminal of the fourteenth capacitor C14.

[0114] It should be noted that the voltage regulator chip U4 mentioned above can be a chip with voltage regulation function, such as the voltage regulator chip with model number SGM2036S-3.3. This embodiment does not limit it.

[0115] In a specific implementation, the input terminal of the voltage regulator chip U4 is connected to the data transmission interface 4. It can receive the operating current transmitted by the external device 5 through the data transmission interface 4, and after regulating the operating current, it is transmitted to the switching unit 22 through the output terminal of the voltage regulator chip U4.

[0116] Furthermore, in order to supply power to storage module 3, continue as follows Figure 6 As shown, in this embodiment, the switching unit 22 includes: a switching transistor Q1 and a sixth resistor R6;

[0117] The drain of the aforementioned switch Q1 is connected to the aforementioned voltage regulator unit 21, the source of the aforementioned switch Q1 is connected to the aforementioned storage module 3, the gate of the aforementioned switch Q1 is connected to the aforementioned fingerprint unlocking module 1 and the first end of the aforementioned sixth resistor R6, and the second end of the aforementioned sixth resistor R6 is grounded.

[0118] It should be noted that the aforementioned switch Q1 can be either an NMOS transistor or a PMOS transistor, and the specific modulation can be adjusted according to the actual situation. This embodiment uses an NMOS transistor for explanation.

[0119] In a specific implementation, when the user authentication signal transmitted by the fingerprint interpretation module 1 is received through the gate of the switch Q1, the switch Q1 will turn on the path between the storage module 3 and the data transmission interface, and at the same time transmit the regulated working voltage to the storage module 3 through the switch Q1, thereby powering the storage module 3. Meanwhile, the storage module 3 can transmit data to the external device 5 through the data transmission interface 4.

[0120] Reference Figure 7 , Figure 7 This is a schematic diagram of the third embodiment of the storage circuit proposed in this utility model.

[0121] Based on the above embodiments, a third embodiment of this utility model is proposed. To realize the FindMy positioning function of the storage device, such as... Figure 7 As shown, in this embodiment, the storage circuit further includes: a positioning module 6 and a button 7;

[0122] The positioning module 6 is connected to the fingerprint unlocking module 1 and the button 7 respectively;

[0123] The button 7 is used to transmit the generated start signal to the positioning module 6 when triggered by the user;

[0124] The fingerprint unlocking module 1 is also used to transmit the generated user authentication signal to the positioning module 6 when the current fingerprint signal collected is the same as the preset fingerprint signal;

[0125] The positioning module 6 is used to activate the positioning function when it receives the start signal and the user authentication signal.

[0126] It should be noted that the aforementioned positioning module 6 can be a module with positioning function composed of a Bluetooth unit 61 and a positioning unit 62. For details, please refer to... Figure 8 as well as Figure 9 , Figure 8 The circuit diagram of the Bluetooth unit in the third embodiment of the storage circuit proposed in this utility model is shown. Figure 9 The circuit diagram of the positioning unit in the third embodiment of the storage circuit proposed in this utility model is shown.

[0127] It should also be noted that the button 7 mentioned above can be any press-type device that generates an on / off signal (conduction signal or start signal) when triggered, such as a regular button or key.

[0128] To enable or disable the location function of the storage device, such as Figure 8 As shown, in this embodiment, the Bluetooth unit 61 includes: a Bluetooth chip U5, an antenna, a crystal oscillator Y, a first inductor L1, a second inductor L2, a seventh resistor R7 to an eleventh resistor R11, and a seventeenth capacitor C12 to a thirty-first capacitor C31.

[0129] The button input terminal of the aforementioned Bluetooth chip U5 ( Figure 8 The first pin of U5 is connected to the second terminal of the seventh resistor R7, and the first communication terminal of the Bluetooth chip U5 is connected to the second terminal of the seventh resistor R7. Figure 8 The second pin of U5 is connected to the second terminal of the eighth resistor R8, which is the fingerprint input terminal of the aforementioned Bluetooth chip U5. Figure 8 The seventh pin of the Bluetooth chip U5 is connected to the fingerprint unlocking module 1 mentioned above, and the digital power supply terminal of the Bluetooth chip U5 is connected to the fingerprint unlocking module 1 mentioned above. Figure 8 The eighth pin of U5 is grounded, and the first power supply terminal of the aforementioned Bluetooth chip U5 ( Figure 8 The ninth pin of U5 is connected to the second terminal of the sixteenth capacitor C16, and the second power supply terminal of the Bluetooth chip U5 is connected to the second terminal of the sixteenth capacitor C16. Figure 8 The tenth pin of U5 is connected to the second terminal of the ninth resistor R9 and the first terminal of the seventeenth capacitor C17, respectively. The third power supply terminal of the Bluetooth chip U5 is... Figure 8 The eleventh pin of the aforementioned U5 is connected to the first terminal of the aforementioned first inductor L1, and the fourth power supply terminal of the aforementioned Bluetooth chip U5 ( Figure 8 The twelfth pin of the aforementioned U5 is connected to the second terminal of the first inductor L1, and the fifth power supply terminal of the aforementioned Bluetooth chip U5 is connected to the second terminal of the first inductor L1. Figure 8Pin 13 of U5 is connected to the first terminal of capacitor C18, capacitor C19, and resistor R10, respectively. The sixth power supply terminal of the aforementioned Bluetooth chip U5 (…) Figure 8 The fourteenth pin of U5 is connected to the first end of the twentieth capacitor C20, and the seventh power supply terminal of the aforementioned Bluetooth chip U5 ( Figure 8 Pin 17 of U5 is connected to the first terminal of capacitor C21 (21) and the power supply, respectively. The first crystal oscillator terminal of the Bluetooth chip U5 is connected to the first terminal of the twenty-first capacitor C21 and the power supply. Figure 8 The 23rd pin of U5 is connected to the first end of the aforementioned crystal oscillator Y, and the second crystal oscillator end of the aforementioned Bluetooth chip U5 ( Figure 8 Pin 22 of the U5 chip is connected to the second terminal of the crystal oscillator Y, and the reset terminal of the Bluetooth chip U5 is... Figure 8 Pin 25 of the U5 chip is connected to the first end of capacitor C22 (pin 22), and the antenna terminal of the aforementioned Bluetooth chip U5 is connected to the first end of the capacitor C22. Figure 8 Pin 26 of U5 is connected to the first end of capacitor C23, and the eighth power supply pin of Bluetooth chip U5 is connected to the first end of capacitor C23. Figure 8 Pin 27 of U5 is connected to the second terminal of capacitor C24 (twenty-fourth), capacitor C25 (twenty-fifth), and resistor R11 (eleventh). The first positioning communication terminal of Bluetooth chip U5 (…) Figure 8 Pin 31 of U5 and the second positioning communication terminal of the aforementioned Bluetooth chip U5 are both ( Figure 8 The 32nd pin of U5 is connected to the aforementioned positioning unit 62.

[0130] The ground terminal of the aforementioned Bluetooth chip U5 ( Figure 8Pin 33 of U5 is grounded; the first end of the seventh resistor R7 is connected to the button; the first end of the eighth resistor R8 is connected to the power supply; the first end of the sixteenth capacitor C16 is grounded; the first end of the ninth resistor R9 is connected to the power supply; the second ends of the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19, the twentieth capacitor C20, the twenty-first capacitor C21, and the twenty-second capacitor C22 are all grounded; the first ends of the twenty-fourth capacitor C24 and the twenty-fifth capacitor C25 are grounded; and the first end of the twenty-third capacitor C23... The two terminals are respectively connected to the second terminal of the twenty-sixth capacitor C26 and the first terminal of the second inductor L2. The second terminal of the second inductor L2 is respectively connected to the second terminal of the twenty-seventh capacitor C27, the second terminal of the twenty-eighth capacitor C28, and the first terminal of the twenty-ninth capacitor C29. The second terminal of the twenty-ninth capacitor C29 is respectively connected to the second terminal of the thirtieth capacitor C30 and the antenna. The second terminal of the thirty-first capacitor C31 is connected to the antenna. The first terminals of the twenty-sixth capacitor C26, the twenty-seventh capacitor C27, the twenty-eighth capacitor C28, the thirtieth capacitor C30, and the thirty-first capacitor C31 are all grounded.

[0131] It should be noted that the Bluetooth chip U5 mentioned above can be any chip used to transmit positioning activation signals and start signals, such as the AP2T21F40 Bluetooth chip. Of course, other models can also be used; this embodiment does not impose any limitations on this. The aforementioned power supply (i.e....) Figure 8 The +3V3 power supply can be the power required for the Bluetooth chip to operate. It can be obtained through the power supply built into the storage device, or it can be obtained through other means. This embodiment does not limit this.

[0132] It is understood that the Bluetooth chip in this embodiment is based on the FindMy feature of Apple devices for positioning. The Bluetooth unit 61 is connected to the Apple device through an antenna to achieve FindMy positioning. It should be noted that FindMy positioning can be achieved through GPS positioning, Wi-Fi positioning, Bluetooth positioning, and cellular network positioning. This embodiment uses Bluetooth positioning for explanation. The Bluetooth chip U5 communicates with the Apple device through an antenna. FindMy can roughly determine the distance between the storage device and a known location (such as the user's Apple device).

[0133] It is also understood that the aforementioned activation signal could be a signal generated when button 7 is triggered.

[0134] In its implementation, when a user needs to activate the location function, the user can press button 7 to trigger it, while simultaneously pressing the fingerprint unlock module 1. The button input terminal of the Bluetooth chip U5 receives the activation signal generated when button 7 is triggered, and the fingerprint input terminal of the Bluetooth chip U5 receives the user authentication signal transmitted by the fingerprint unlock module 1. The Bluetooth chip U5 outputs a location activation signal to the location unit 62 through its first and second location communication terminals only when both the activation and user authentication signals are received simultaneously. Upon receiving the location activation signal, the location unit 62 activates the location function. Therefore, in this embodiment, the location function is only enabled after button 7 is pressed and the user's fingerprint unlock is successful, thus improving security. If the fingerprint unlock module 1 is not pressed by the user, the location function cannot be activated.

[0135] It should also be noted that when the Bluetooth chip U5 needs to disable the positioning function, the button 7 needs to be triggered again. At this time, the button 7 will generate a shutdown signal to the Bluetooth chip U5. The fingerprint input terminal of the Bluetooth chip U5 is used to receive the user authentication signal transmitted by the fingerprint unlocking module 1. The Bluetooth chip U5 outputs a positioning shutdown signal to the positioning unit 62 through the first positioning communication terminal and the second positioning communication terminal of the Bluetooth chip U5. The positioning unit 62 disables the positioning function. That is, the user must press the button 7 and the fingerprint unlocking module 1 outputs a user authentication signal to disable the positioning function, preventing others from maliciously disabling it.

[0136] In order to locate storage devices, such as Figure 9 As shown, Figure 9 This is a circuit diagram of the positioning unit in the third embodiment of the storage circuit proposed in this utility model. In this embodiment, the positioning unit 62 includes: a positioning chip U6, a twelfth resistor R12, a thirteenth resistor R13, a thirty-second capacitor C32, and a thirty-third capacitor C33;

[0137] The serial input terminal of the aforementioned positioning chip U6 ( Figure 9 The first pin of U6 is grounded, and the clock terminal of the aforementioned positioning chip U6 ( Figure 9 The second pin of U6 is connected to the second end of the twelfth resistor R12, and the first power supply terminal of the positioning chip U6 is connected to the second pin of the twelfth resistor R12. Figure 9 The third pin of U6 is connected to the aforementioned power supply and the first terminal of the aforementioned thirty-second capacitor C32, respectively. The first unselected terminal of the positioning chip U6 ( Figure 9 The fourth pin of U6 is grounded, and the first interrupt terminal of the aforementioned positioning chip U6 ( Figure 9 The fifth pin of U6 and the second interrupt terminal of the aforementioned positioning chip U6 ( Figure 9The sixth pin of U6 is connected to the aforementioned Bluetooth unit 61.

[0138] The second power supply terminal of the aforementioned positioning chip U6 ( Figure 9 Pin 7 of U6 is connected to the aforementioned power supply and the first terminal of the aforementioned thirty-third capacitor C33, respectively. The digital terminal of the aforementioned positioning chip U6 ( Figure 9 The eighth pin of U6 and the ground terminal of the aforementioned positioning chip U6 ( Figure 9 The ninth pin of U6 is grounded, and the second unselected pin of the positioning chip U6 is grounded. Figure 9 The eleventh pin of the positioning chip U6 is connected to the first terminal of the twelfth resistor R12, the first terminal of the thirteenth resistor R13, and the power supply, respectively. The alternative terminal of the positioning chip U6 ( Figure 9 The twelfth pin of U6 is connected to the second end of the thirteenth resistor R13 mentioned above;

[0139] The second terminal of the aforementioned thirty-second capacitor C32 and the second terminal of the aforementioned thirty-third capacitor C33 are both grounded.

[0140] It should be noted that the positioning chip U6 mentioned above can be any positioning chip, such as the positioning chip with model number SC7A20. Of course, other models can also be used, and this embodiment does not limit this.

[0141] In a specific implementation, the positioning chip U6 transmits data with the Bluetooth chip U5 through its first interrupt terminal and second interrupt terminal, and receives the positioning enable signal output by the Bluetooth chip U5 to enable the positioning function, or receives the positioning disable signal output by the Bluetooth chip U5 to disable the positioning function.

[0142] To achieve the above objectives, this utility model also proposes a storage device, which includes a storage circuit with the FindMy function as described above.

[0143] It should be noted that the specific implementation of the storage device provided in this embodiment can refer to the above embodiments, and this embodiment will not elaborate on them. Therefore, the effects achieved by the storage device in this embodiment can also refer to the above embodiments, and this embodiment will not elaborate on them either.

[0144] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A storage circuit with FindMy function, characterized in that, The storage circuit includes: a fingerprint unlocking module, a switch module, a storage module, and a data transmission interface; The switch module is connected to the fingerprint unlock module, the data transmission interface and the storage module respectively. The data transmission interface is connected to the storage module and is also used to connect to external devices. The fingerprint unlocking module is used to transmit the generated user authentication signal to the switch module when the current fingerprint signal collected is the same as the preset fingerprint signal. The switching module is used to transmit the operating voltage provided by the external device through the data transmission interface to the storage module for power supply when the user authentication signal is received; The storage module is used to transmit data with the external device through the data transmission interface after receiving the operating voltage.

2. The storage circuit as described in claim 1, characterized in that, The fingerprint unlocking module includes: a fingerprint acquisition unit, a fingerprint storage unit, and a fingerprint unlocking unit; The fingerprint unlocking unit is connected to the fingerprint acquisition unit, the fingerprint storage unit, and the switch module, respectively; The fingerprint acquisition unit is used to acquire the user's current fingerprint signal and transmit the current fingerprint signal to the fingerprint unlocking unit; The fingerprint unlocking unit is used to transmit the generated user authentication signal to the switch module when the current fingerprint signal is the same as the preset fingerprint signal pre-stored in the fingerprint storage unit.

3. The storage circuit as described in claim 2, characterized in that, The fingerprint acquisition unit includes: a fingerprint acquisition chip and a first capacitor to a fourth capacitor; The first power supply terminal of the fingerprint acquisition chip is connected to the second terminal of the first capacitor. The second power supply terminal of the fingerprint acquisition chip is connected to the first terminal of the second capacitor and the chip power supply. The third power supply terminal of the fingerprint acquisition chip is connected to the first terminal of the third capacitor and the chip power supply. The first acquisition terminal of the fingerprint acquisition chip is connected to the first terminal of the fourth capacitor. The second acquisition terminal of the fingerprint acquisition chip is connected to the second terminal of the fourth capacitor. The recognition terminal of the fingerprint acquisition chip is connected to the chip power supply. The first communication terminal, the second communication terminal, the clock terminal, the chip select terminal, the interrupt terminal, and the reset terminal of the fingerprint acquisition chip are all connected to the fingerprint unlocking unit. The first ground terminal of the fingerprint acquisition chip is connected to the second terminal of the second capacitor. The first ground terminal, the second ground terminal, the first open selection terminal, the fifth open selection terminal, the sixth open selection terminal, the eighth open selection terminal, and the test terminal of the fingerprint acquisition chip are all grounded. The first terminal of the first capacitor is grounded, the first terminal of the second capacitor is connected to the chip power supply, and the second terminal of the third capacitor is grounded.

4. The storage circuit as described in claim 2, characterized in that, The fingerprint storage unit includes: a fingerprint storage chip, a first resistor, a second resistor, and a fifth capacitor; The chip select terminal, the first communication terminal, the second communication terminal, and the clock terminal of the fingerprint storage chip are all connected to the fingerprint unlocking unit. The protection terminal of the fingerprint storage chip is connected to the second terminal of the first resistor. The holding terminal of the fingerprint storage chip is connected to the second terminal of the second resistor. The power supply terminal of the fingerprint storage chip is connected to the first terminal of the fifth capacitor and the chip power supply, respectively. The first ground terminal and the second ground terminal of the fingerprint storage chip are both grounded. The first terminal of the first resistor and the first terminal of the second resistor are both connected to the chip power supply. The second terminal of the first capacitor is grounded.

5. The storage circuit as described in claim 2, characterized in that, The fingerprint unlocking unit includes: a fingerprint unlocking chip, a diode, a third resistor, a fourth resistor, and sixth to eleventh capacitors; The analog-to-digital power supply terminal of the fingerprint unlocking chip is connected to the first power supply terminal of the fingerprint unlocking chip, the first terminal of the sixth capacitor, and the chip power supply, respectively. The second power supply terminal of the fingerprint unlocking chip is connected to the first terminal of the diode, the first terminal of the seventh capacitor, the first terminal of the eighth capacitor, and the chip power supply, respectively. The third power supply terminal of the fingerprint unlocking chip is connected to the first terminal of the ninth capacitor. The switch output terminal of the fingerprint unlocking chip is connected to the switch module. The memory chip select terminal of the fingerprint unlocking chip is connected to the fingerprint storage unit. The USB power input terminal of the fingerprint unlocking chip is connected to the first terminal of the tenth capacitor and the chip power supply, respectively. The power output terminal B is connected to the first terminal of the eleventh capacitor; the acquisition clock terminal of the fingerprint unlocking chip is connected to the first terminal of the third resistor; the first acquisition communication terminal of the fingerprint unlocking chip is connected to the fingerprint acquisition unit; the acquisition chip select terminal of the fingerprint unlocking chip is connected to the first terminal of the fourth resistor and the fingerprint acquisition unit respectively; the second acquisition communication terminal of the fingerprint unlocking chip is connected to the fingerprint acquisition unit; the storage clock terminal of the fingerprint unlocking chip is connected to the fingerprint storage unit; both the first and second storage communication terminals of the fingerprint unlocking chip are connected to the fingerprint storage unit; and the ground terminal of the fingerprint unlocking chip is grounded. The second terminal of the sixth capacitor is grounded. The second terminal of the diode is connected to the second terminals of the seventh capacitor, the eighth capacitor, and the ninth capacitor, respectively. The second terminal of the diode is grounded. The second terminal of the tenth capacitor is grounded. The second terminal of the eleventh capacitor is grounded. The second terminal of the third resistor is connected to the fingerprint acquisition module. The second terminal of the fourth resistor is connected to the chip power supply.

6. The storage circuit as described in claim 1, characterized in that, The switching module includes: a voltage regulator unit and a switching unit; The voltage regulator unit is connected to the data transmission interface and the switching unit, respectively, and the switching unit is connected to the fingerprint unlocking module and the storage module, respectively. The voltage regulating unit is used to regulate the operating voltage transmitted by the external device through the data transmission interface, and to transmit the regulated operating voltage to the switching unit. The switching unit is used to transmit the regulated operating voltage to the storage module for power supply when the user authentication signal is received.

7. The storage circuit as described in claim 6, characterized in that, The voltage regulator unit includes: a voltage regulator chip, a fifth resistor, and capacitors twelfth to fifteenth; The input terminal of the voltage regulator chip is connected to the data transmission interface, the first terminal of the fifth resistor, the first terminal of the twelfth capacitor, and the first terminal of the thirteenth capacitor, respectively. The enable terminal of the voltage regulator chip is connected to the second terminal of the fifth resistor. The output terminal of the voltage regulator chip is connected to the switching unit, the first terminal of the fourteenth capacitor, and the first terminal of the fifteenth capacitor, respectively. The first ground terminal and the second ground terminal of the voltage regulator chip are both grounded. The second terminals of the twelfth capacitor to the fourteenth capacitor are all grounded, and the second terminal of the fifteenth capacitor is connected to the second terminal of the fourteenth capacitor.

8. The storage circuit as described in claim 6, characterized in that, The switching unit includes: a switching transistor and a sixth resistor; The drain of the switching transistor is connected to the voltage regulator unit, the source of the switching transistor is connected to the storage module, the gate of the switching transistor is connected to the fingerprint unlocking module and the first end of the sixth resistor, and the second end of the sixth resistor is grounded.

9. The storage circuit as described in claim 1, characterized in that, The storage circuit also includes: a positioning module and a button; The positioning module is connected to both the fingerprint unlocking module and the button. The button is used to transmit a generated start signal to the positioning module when triggered by the user. The fingerprint unlocking module is also used to transmit the generated user authentication signal to the positioning module when the current fingerprint signal collected is the same as the preset fingerprint signal. The positioning module is used to activate the positioning function when it receives the start signal and the user authentication signal.

10. A storage device, characterized in that, The storage device includes a storage circuit with FindMy function as described in any one of claims 1 to 9.

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