Magnetic mobile hard disk with anti-metal NFC encryption

Abstract

The application discloses a kind of anti-metal NFC encryption magnetic attraction mobile hard disk, comprising: mobile hard disk, main control PCB board, storage chip and power supply circuit are arranged in it;Magnetic attraction module is arranged on mobile hard disk, for mobile hard disk is attached to metal surface;NFC antenna is arranged in mobile hard disk body and is electrically connected to main control PCB board;Anti-metal material sheet is attached to the side of NFC antenna close to the magnetic attraction module;Security encryption chip is integrated on main control PCB board, security encryption chip is configured as: identity verification is carried out with external NFC key by NFC antenna, and data access is allowed to storage chip after verification passes through.This application introduces anti-metal module that is precisely attached with NFC antenna, successfully overcome the shielding effect of metal to signal, so that mobile hard disk can still guarantee the stable realization of NFC encryption unlocking function while adopting solid metal shell and convenient magnetic attraction interface.

Description

Technical Field

[0001] This application relates to the technical field of portable solid-state drives, and in particular to a magnetic portable hard drive with anti-metal NFC encryption. Background Technology

[0002] Currently, existing mobile storage devices generally employ hardware encryption technology to ensure data security. Traditional password encryption methods are prone to being forgotten, easily spied on, or cracked. To address this, Near Field Communication (NFC) technology has been introduced, enabling unlocking via "card swipe," thus improving security and convenience. However, applying NFC technology to portable hard drives faces significant challenges: Firstly, to achieve durability and heat dissipation, hard drive casings are often made of metal, which severely shields and interferes with NFC signals, causing the unlocking function to fail. Secondly, the magnetic interface used to improve connectivity creates a stronger signal shielding cavity when the hard drive is attached to a metal surface, rendering the built-in NFC function completely inoperable.

[0003] In view of this, there is an urgent need for a magnetic portable hard drive with anti-metal NFC encryption that can effectively solve the interference of metal environment, so that it can reliably perform high-strength encryption and unlocking through NFC, and can make full use of the convenience brought by magnetic attraction to achieve normal use on metal surfaces. Utility Model Content

[0004] This application provides a magnetic portable hard drive with anti-metal NFC encryption to solve the above-mentioned technical problems.

[0005] The first aspect of this application provides a magnetic portable hard drive with anti-metal NFC encryption, comprising: a portable hard drive having a main control PCB board, a storage chip, and a power circuit therein; a magnetic module disposed on the portable hard drive for attaching the portable hard drive to a metal surface; an NFC antenna disposed within the portable hard drive and electrically connected to the main control PCB board; an anti-metal material sheet attached to the side of the NFC antenna near the magnetic module; and a security encryption chip integrated on the main control PCB board, configured to: authenticate with an external NFC key via the NFC antenna, and allow data access to the storage chip after successful authentication.

[0006] In some embodiments, the NFC antenna is printed on the main control PCB board by layout, and its external dimensions are (20±0.5) mm × (34±0.5) mm.

[0007] In some embodiments, the NFC antenna is a loop coil antenna with 5 turns, a trace width of 0.5 mm, and a turn spacing of 0.75 mm.

[0008] In some embodiments, the anti-metal material sheet is a ferrite sheet.

[0009] In some embodiments, the thickness of the anti-metal material sheet is not less than 0.15 mm.

[0010] In some embodiments, the dimensions of the anti-metal material sheet are adapted to the projected profile of the NFC antenna and completely cover the NFC antenna.

[0011] In some embodiments, the magnetic module includes a magnet assembly, the ring arrangement of which is compatible with the magnetic rings of mainstream smartphones.

[0012] In some embodiments, the hard drive casing of the portable hard drive is made of a non-metallic material in the area corresponding to the NFC antenna.

[0013] In some embodiments, the security encryption chip is a hardware encryption chip equipped with the AES256 encryption algorithm.

[0014] In some embodiments, the magnetic module also serves as a data and power transmission interface, and it is electrically connected to the main control PCB board.

[0015] This application provides a magnetic portable hard drive with anti-metal NFC encryption, comprising: a portable hard drive containing a main control PCB board, a storage chip, and a power circuit; a magnetic module disposed on the portable hard drive for attaching the portable hard drive to a metal surface; an NFC antenna disposed within the portable hard drive and electrically connected to the main control PCB board; an anti-metal material sheet attached to the side of the NFC antenna near the magnetic module; and a security encryption chip integrated on the main control PCB board, configured to: authenticate with an external NFC key via the NFC antenna, and allow data access to the storage chip after successful authentication. This application successfully overcomes the signal shielding effect of metal by introducing an anti-metal module precisely fitted to the NFC antenna, ensuring stable NFC encryption and unlocking functionality while maintaining a robust metal casing and convenient magnetic interface. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of the magnetic portable hard drive with anti-metal NFC encryption provided in the embodiments of this application.

[0017] Figure 2 This is a structural block diagram of the portable hard drive provided in the embodiments of this application.

[0018] Explanation of main component symbols Magnetic portable hard drive 1000 with anti-metal NFC encryption; Portable hard drive 10; Magnetic module 20; Anti-metal material sheet 30; Main control PCB board 11; 12. Storage chip; 13. Power supply circuit; 14. NFC antenna; 15. Security encryption chip; 21. Strong magnet. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings.

[0020] It is understood that the connection relationships described in this application refer to direct or indirect connections. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components. For example, A can be directly connected to C, and C can be directly connected to B, thus achieving a connection between A and B through C. It is also understood that the "A connects to B" described in this application can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components.

[0021] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0022] In the description of this application, the words "first," "second," etc., are used only to distinguish different objects and do not limit the quantity or order of execution, nor do they imply that they must be different. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0023] Please see Figure 1 , Figure 1 This is a structural block diagram of a magnetic portable hard drive with anti-metal NFC encryption. The present invention provides a magnetic portable hard drive 1000 with anti-metal NFC encryption, comprising a portable hard drive 10, a main control PCB board 11 disposed inside the portable hard drive, a storage chip 12, a power supply circuit 13, and an NFC antenna 14; a magnetic module 20; and an anti-metal material sheet 30.

[0024] Please see Figure 2 , Figure 2 This is a structural block diagram of the portable hard drive. Further, the main control PCB board 11, as the core carrier, is fixed inside the portable hard drive 10. The storage chip 12 (e.g., a NAND Flash chip) and the power supply circuit 13 are both soldered onto the main control PCB board 11. The power supply circuit 13 is responsible for converting and regulating the power input from the external interface, providing a stable operating voltage for the main control PCB board 11, the storage chip 12, and other components.

[0025] Furthermore, the magnetic module 20 is embedded at one end of the portable hard drive 1. In this embodiment, the magnetic module 20 includes several strong magnets 21 arranged in a ring. The arrangement and polarity distribution of these magnets match the magnetic rings (such as MagSafe) of mainstream smartphones on the market, enabling the hard drive casing of the portable hard drive 10 to be firmly attached to devices or metal surfaces with corresponding magnetic functions. Simultaneously, the magnetic module 20 integrates data transmission (such as USB 3.2 Gen 2) and power transmission pins, and is connected to the main control PCB board 11 via an FPC cable, serving as the main physical interface.

[0026] Furthermore, the NFC antenna 14 is directly printed on the main control PCB board 11 using PCB layout technology, and its operating frequency is 13.56MHz. The NFC antenna 14 has specific dimensions of 20mm × 34mm. It is a loop coil antenna with a total of 5 turns of coil, a trace width of 0.5mm, and a spacing of 0.75mm between turns. This precise design ensures optimal resonant performance of the antenna.

[0027] Furthermore, the anti-metal material sheet 30 is a ferrite sheet with excellent high-frequency characteristics and a thickness of 0.15mm. The external dimensions of this ferrite sheet are completely consistent with the projected outline of the NFC antenna 14 and are tightly attached to the back of the NFC antenna 14 (i.e., the side near the magnetic module and the metal casing of the portable hard drive). Its function is to effectively suppress the eddy current loss generated by the metal casing on the NFC alternating magnetic field, providing a low magnetic resistance magnetic flux path for the NFC signal, thereby ensuring the sensitivity and reliability of NFC communication in a metallic environment.

[0028] Furthermore, a security encryption chip 15 (e.g., a chip certified by national cryptographic standards) is integrated on the main control PCB board 11. This security encryption chip 15 has a built-in AES256 encryption algorithm engine and is electrically connected to the NFC antenna 14 and the main control chip. Its working logic is configured as follows: when the mobile hard drive 10 is powered on through the magnetic module, the security encryption chip 14 immediately enters the authentication state; when the user brings the authorized NFC key (such as an IC card or an NFC-enabled mobile phone) close to the area marked with the NFC logo on the mobile hard drive 10, the security encryption chip 14 reads the key information and verifies it through the NFC antenna 14; only after successful verification does the security encryption chip 14 allow the main control chip to access the storage chip 12 for data read and write; if the verification fails or is not performed, the storage chip 12 remains in an encrypted locked state, and all data is unreadable.

[0029] Furthermore, in order to optimize NFC signal transmission, in this embodiment, the hard drive casing of the mobile hard drive 10 is made of aluminum alloy, but a window is opened in the area directly above the internal NFC antenna and a piece of PC plastic is embedded therein to minimize signal penetration loss.

[0030] Furthermore, the user attaches the portable hard drive 10 to a computer or metal stand via the magnetic module 20. With the hard drive powered on, the data access channel is locked. The user simply swipes their authorized NFC card on the hard drive's NFC identification area, and the security encryption chip completes authentication, instantly unlocking the hard drive. The entire process requires no password, is convenient and secure, and perfectly solves the problem of NFC signal shielding in metallic environments.

[0031] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of protection claimed in this application.

Claims

1. A magnetic portable hard drive with anti-metal NFC encryption, characterized in that, include: A portable hard drive contains a main control PCB board, storage chips, and a power circuit. A magnetic module is disposed on the portable hard drive for attaching the portable hard drive to a metal surface; an NFC antenna is disposed inside the portable hard drive and electrically connected to the main control PCB board; an anti-metal material sheet is attached to the side of the NFC antenna near the magnetic module; a security encryption chip is integrated on the main control PCB board, and the security encryption chip is configured to: authenticate with an external NFC key through the NFC antenna, and allow data access to the storage chip after successful authentication.

2. The magnetic portable hard drive with anti-metal NFC encryption according to claim 1, characterized in that, The NFC antenna is printed on the main control PCB board by layout, and its external dimensions are (20±0.5)mm×(34±0.5)mm.

3. The magnetic portable hard drive with anti-metal NFC encryption according to claim 2, characterized in that, The NFC antenna is a loop coil antenna with 5 turns, a trace width of 0.5 mm, and a turn spacing of 0.75 mm.

4. The magnetic portable hard drive with anti-metal NFC encryption according to claim 3, characterized in that, The anti-metal material sheet is a ferrite sheet.

5. The magnetic portable hard drive with anti-metal NFC encryption according to claim 4, characterized in that, The thickness of the anti-metal material sheet is not less than 0.15 mm.

6. The magnetic portable hard drive with anti-metal NFC encryption according to claim 5, characterized in that, The dimensions of the anti-metal material sheet are adapted to the projected outline of the NFC antenna and completely cover the NFC antenna.

7. The magnetic portable hard drive with anti-metal NFC encryption according to claim 6, characterized in that, The magnetic module includes a magnet assembly, and the ring arrangement of the magnet assembly is compatible with the magnetic rings of mainstream smartphones.

8. The magnetic portable hard drive with anti-metal NFC encryption according to claim 7, characterized in that, The hard drive casing of the portable hard drive is made of non-metallic material in the area corresponding to the NFC antenna.

9. The magnetic portable hard drive with anti-metal NFC encryption according to claim 8, characterized in that, The security encryption chip is a hardware encryption chip equipped with the AES256 encryption algorithm.

10. The anti-metal NFC encrypted magnetic portable hard drive according to claim 9, characterized in that, The magnetic module also serves as a data and power transmission interface, and it is electrically connected to the main control PCB board.

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