Touch display terminal with secure signature

Abstract

The utility model discloses a safe signature touch display terminal which comprises a display mainboard, a signal processing module, an encryption module and a data transmission module are arranged on the display mainboard, and the encryption module is in data connection with a signature input module used for signature. The encryption module is used for encrypting signature data of the signature input module and sending the signature data to the signal processing module, and the signal processing module is in data connection with an upper computer used for comparing or storing signatures through the data transmission module. According to the utility model, the signature data of the handwriting module is encrypted, so that the risk that the signature information is stolen or tampered in the transmission and storage process is effectively prevented, and the security of the data is improved. In the encryption and decryption process, the authenticity and integrity of the data are ensured, and signature comparison is more accurate and reliable. Besides, only the signature data of the handwriting module is encrypted, so that excessive encryption of the whole system is avoided, the occupation of system resources is reduced, and the operation efficiency of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch display terminals, and more specifically to a touch display terminal with secure signature. Background Art

[0002] With the rapid development of information technology, handwriting tablet technology has been widely used in various scenarios that require handwritten signatures, such as document processing, online contract signing, etc. Handwriting tablet devices allow users to sign in electronic form, which not only improves efficiency but also facilitates storage and transmission. However, since the handwriting tablet signature information often lacks sufficient encryption protection during transmission and storage, the signature information is at risk of being stolen or tampered with. This security risk may not only lead to serious consequences such as identity forgery and contract invalidity, but may also threaten the privacy and rights of users.

[0003] The above shortcomings need to be improved. Summary of the invention

[0004] In order to solve the problem of low security of signature information on a handwriting board, the utility model provides a touch display terminal with secure signature.

[0005] The technical solution of the utility model is as follows:

[0006] A signature-secure touch display terminal comprises a display mainboard, on which a signal processing module, an encryption module and a data transmission module are arranged, the encryption module is data-connected to a signature input module for signing, the encryption module is used to encrypt the signature data of the signature input module and send it to the signal processing module, and the signal processing module is data-connected to a host computer for comparing or storing signatures via the data transmission module.

[0007] Furthermore, the signature input module includes a display device data-connected to the signal processing module and a handwriting module data-connected to the display device.

[0008] Furthermore, the display device is a touch screen.

[0009] Furthermore, the handwriting module is an electromagnetic handwriting module.

[0010] Furthermore, the data transmission module is connected to the transfer module, the encryption module and the host computer are connected via the transfer module data, the transfer module is used to convert the data between the encryption module and the host computer, and the transfer module is connected to the host computer data.

[0011] Furthermore, the data transmission module includes a USB expansion module, the USB expansion module is connected to the encryption module, the USB expansion module is connected to the transfer module via a Type-C line, and the encryption module and the transfer module are connected via the USB expansion module data.

[0012] Furthermore, a USB data cable and an HDMI data cable are connected between the transfer module and the host computer, the host computer sends a display signal to the transfer module via the HDMI data cable, and the transfer module sends signature data to the host computer via the USB data cable.

[0013] Furthermore, the host computer is communicatively connected to a cloud server, and the cloud server is used for comparing signatures.

[0014] Furthermore, the encryption module includes a storage module, the storage module is connected to a power supply module, a power-off module is arranged between the storage module and the power supply module, the power-off module is mechanically connected to the shell of the display terminal, and abnormal opening of the shell of the display terminal triggers the power-off module to disconnect the power supply of the storage module.

[0015] Furthermore, the power-off module includes a button, and the button is in contact with a housing of the display terminal.

[0016] The utility model according to the above scheme has the beneficial effect that, by encrypting the handwriting module signature data, the utility model effectively prevents the risk of signature information being stolen or tampered with during transmission and storage, thereby improving the security of data. In the encryption and decryption process, the authenticity and integrity of the data are ensured, making the signature comparison more accurate and reliable. In addition, only the handwriting module signature data is encrypted, avoiding excessive encryption of the entire system, thereby reducing the occupation of system resources and improving the operating efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the system architecture of the utility model;

[0019] Figure 2 A schematic diagram showing the mainboard structure of the present utility model;

[0020] Figure 3This is a circuit diagram of the power-off module of the utility model;

[0021] Figure 4 This is a circuit diagram of the main chip part of the utility model;

[0022] Figure 5 This is a circuit diagram of the conversion chip part of the utility model;

[0023] Figure 6 This is a circuit diagram of the encryption module part in the utility model.

[0024] Among them, the figure marks in the figure are: 1. Display main board; 101. Signal processing module; 102. Encryption module; 103. Data transmission module; 104. Storage module; 105. Power supply module; 106. Power off module; 2. Signature input module; 201. Display device; 202. Handwriting module; 3. Host computer; 4. Transfer module; 5. Cloud server. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when a component is referred to as being "fixed" or "set" or "connected" to another component, it may be located directly or indirectly on the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and should not be construed as limitations on the present technical solution. The terms "first", "second", etc. are only used for the convenience of description and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0027] like Figures 1 to 5 As shown, a signature-secure touch display terminal described in one embodiment of the utility model includes a display mainboard 1, on which a signal processing module 101, an encryption module 102 and a data transmission module 103 are arranged, the encryption module 102 is data-connected to a handwriting module 202 for signature, the encryption module 102 is used to encrypt the signature data of the handwriting module 202 and send it to the signal processing module 101, and the signal processing module 101 is data-connected to a host computer 3 for storing or comparing signatures through the data transmission module 103.

[0028] The signature input module 2 includes a display device 201 data-connected to the signal processing module 101 and a handwriting module 202 data-connected to the display device 201 .

[0029] When the user uses the touch display terminal to perform handwritten signature, the handwriting module 202 will capture and record the user's signature action to form the original signature data. The signature data is then transmitted to the encryption module 102 on the display mainboard 1. The content is written on the display device 201, and the data is transmitted to the encryption chip U25 of the encryption module 102 in the form of IIC data through the handwriting module 202, and the information is encrypted by the encryption chip using the information security encryption algorithm. The encryption chip is designed with a 32-bit CPU security core CS322D, which has the characteristics of low power consumption, high performance, multi-function and high security. The encryption module 102 uses an encryption algorithm, such as AES (Advanced Encryption Standard) or RSA (asymmetric encryption algorithm), to encrypt the original signature data to ensure the security of the data during transmission and storage. The encrypted signature data is transmitted to the signal processing module 101, and the signal processing module 101 is sent to the host computer 3 for comparison through the data transmission module 103. The computer side stores or compares the data, and the host computer 3 stores the user's original signature sample or public key information, which is used to verify the authenticity and integrity of the received encrypted signature data. During the comparison process, the host computer 3 will decrypt the encrypted signature data and compare it with the original signature sample to confirm the authenticity of the signature. If the signature comparison is successful, the host computer 3 will send a confirmation signal to the touch display terminal, indicating that the signature is valid. If the comparison fails, the host computer 3 will send a rejection signal and may trigger further security measures, such as re-verifying the user's identity or refusing to perform subsequent operations.

[0030] In this embodiment, by encrypting the signature data of the handwriting module 202, the risk of the signature information being stolen or tampered with during the transmission and storage process is effectively prevented, thereby improving the security of the data. In the encryption and decryption process, the authenticity and integrity of the data are ensured, making the signature comparison more accurate and reliable. In addition, only the signature data of the handwriting module 202 is encrypted, which avoids excessive encryption of the entire system, thereby reducing the occupation of system resources and improving the operating efficiency of the system. In addition, the user only needs to perform a handwritten signature operation on the touch display terminal to complete the encryption and transmission of the signature data, without the need for additional operation steps, and the operation is simple and convenient, which improves the user experience. At the same time, the touch display terminal can be widely used in various scenarios that require handwritten signatures, such as document processing, online contract signing, etc., providing users with a safer and more convenient signature service.

[0031] In a preferred embodiment, the handwriting module 202 is an electromagnetic handwriting module 202 .

[0032] An electromagnetic pen emits an electromagnetic signal and interacts with the electromagnetic induction board behind the display device 201. When the electromagnetic pen approaches the electromagnetic handwriting module 202, the electromagnetic induction board inside the electromagnetic handwriting module 202 will sense the electromagnetic signal of the pen, causing the induction line under the electromagnetic induction board to change. According to the antenna array receiving signals in the horizontal and vertical directions, the electromagnetic pen is the signal transmitting end, and the antenna array is the signal receiving end. The X and Y coordinate positions of the pen are calculated by the change of magnetic flux. In addition, since the electromagnetic pen has a longitudinal pressure sensor, when the user writes and draws with the electromagnetic pen, when the pen tip is stressed, the pressure is transmitted to the pressure sensor through the pen core. The change in pressure causes the electromagnetic signal emitted by the electromagnetic pen to change. The electromagnetic induction board can show different pressure sensations according to the induction signal and convert it into a digital signal, that is, the original signature data. Subsequently, the original signature data is transmitted to the encryption module 102 on the display main board 1 for encryption.

[0033] In this embodiment, the electromagnetic handwriting module 202 uses electromagnetic induction technology to accurately capture the user's handwriting movements and ensure the accuracy and integrity of the signature data. The electromagnetic handwriting module 202 provides users with a natural writing experience that is similar to paper writing. Combined with encryption technology, it provides users with a safe and convenient signature service, further improving the user experience.

[0034] In a preferred embodiment, the display device 201 is a touch display screen.

[0035] The signal processing module 101 includes a main chip U5 (TSUMV56RUU) and a conversion chip U7 (POL8901). The computer inputs the HDMI signal to the display mainboard 1 through the transfer module 4. In the display mainboard 1, the HDMI signal is converted into a common LVDS screen signal through the main chip U5. Since the touch screen is a MIPI signal screen, the LVDS signal is converted into a MIPI signal through the conversion chip U7 in the signal processing module 101 to light up the screen. In this process, the power module provides power to the main chip U5 and other modules.

[0036] The signal processing module 101 is connected to the touch screen data so that the user can operate the graphical user interface (GUI) of the terminal by touching the touch screen. The touch screen is used to receive the user's touch input, such as clicking, sliding, etc., and convert these inputs into digital signals, and then transmit these signals to the data processing module on the display motherboard 1. At the same time, the signal processing module 101 is also responsible for processing the display signals sent by the host computer 3, such as text, images, etc., which are transmitted to the touch screen and display the corresponding content.

[0037] In this embodiment, the touch display screen provides an intuitive and easy-to-operate interface for the user. The user can quickly and accurately perform various operations by touching the display screen, thereby improving usage efficiency and convenience.

[0038] like Figure 1 , Figure 2 and Figure 6 As shown, in a preferred embodiment, the data transmission module 103 is connected to the transfer module 4, the encryption module 102 and the host computer 3 are connected via the data of the transfer module 4, the transfer module 4 is used to convert the data between the encryption module 102 and the host computer 3, and the transfer module 4 is connected to the data of the host computer 3.

[0039] The data transmission module 103 includes a USB expansion module, which is connected to the encryption module 102 , and the USB expansion module is connected to the transfer module 4 via a Type-C line. The encryption module 102 and the transfer module 4 are connected via the USB expansion module data.

[0040] A USB data cable and an HDMI data cable are connected between the transfer module 4 and the host computer 3. The host computer 3 sends a display signal to the transfer module 4 via the HDMI data cable, and the transfer module 4 sends signature data to the host computer 3 via the USB data cable.

[0041] First, after receiving the signature data on the electromagnetic handwriting module 202, the encryption module 102 will encrypt the data. The encrypted data is then transmitted to the transfer module 4 through the USB expansion module and the Type-C cable. In the transfer module 4, the data is transmitted to the host computer 3 through the USB data cable, and then the host computer 3 compares the signature. The host computer 3 can be a computer, a server, etc. In addition, the transfer module 4 also receives the display signal sent by the host computer 3 through the HDMI data cable. The display signal is converted into USB data in the transfer module 4, and then transmitted to the signal processing module 101 through the Type-C cable. The signal processing module 101 converts the received data into a MIPI signal suitable for the display device 201 to realize the display function of the touch display screen.

[0042] The transfer module 4 makes the data transmission between the encryption module 102 and the host computer 3 more efficient. Through the connection of the USB expansion module and the Type-C line, the data can be quickly transmitted to the transfer module 4, and sent to the host computer 3 after appropriate conversion processing. Through the connection of the HDMI data cable and the Type-C line, the host computer 3 can receive signature data, or send display signals to the transfer module 4, and convert these signals into MIPI signals suitable for the display device 201 through the signal processing module 101, so that the display function is more flexible and does not depend on specific hardware devices. The encryption module 102 encrypts the signature data to ensure the security of the data during transmission. Even if the data is intercepted, it cannot be decrypted and tampered by unauthorized personnel. At the same time, the transfer module 4 also plays a role in data protection during data transmission, further improving the security of the system. Through the transfer module 4 system, it is convenient to connect and communicate with other devices. For example, more functions and application scenarios can be realized by replacing different host computers 3 or connecting other external devices, so that the system has stronger scalability and flexibility. By optimizing the design of data transmission and display functions, users can get a smoother and more efficient signature experience.

[0043] like Figure 1 As shown, in a preferred embodiment, the host computer 3 is communicatively connected to the cloud server 5, and the cloud server 5 is used for comparing signatures.

[0044] After receiving the encrypted signature data, the host computer 3 will send it to the cloud server 5 for comparison. The cloud server 5 stores the user's original signature sample. When receiving the encrypted signature data from the host computer 3, the cloud server 5 will first decrypt the data, and then compare it with the stored original signature sample, or verify it through a signature verification algorithm.

[0045] The result of the comparison or verification will be returned to the host computer 3. If the signature comparison is successful or the verification is passed, the host computer 3 will send a confirmation signal to the touch screen, indicating that the signature is valid. If the comparison fails or the verification is not passed, the host computer 3 will send a rejection signal and may trigger further security measures, such as re-verifying the user's identity or refusing subsequent operations.

[0046] In this embodiment, by performing signature comparison through the cloud server 5, sensitive information can be avoided from being stored locally, further improving the security of the data. At the same time, the cloud server 5 can adopt a more advanced and secure signature verification algorithm to ensure the authenticity and integrity of the signature. The cloud server 5 can store more original signature samples and verification algorithms, making the signature comparison and verification process more accurate and reliable. In addition, the cloud server 5 can also perform more in-depth analysis and processing of the signature data to improve the accuracy and efficiency of the verification. Through the cloud server 5, all signature data can be centrally managed and maintained, and the administrator can view, modify and update the user's signature samples and verification algorithms at any time, which is convenient for system maintenance and upgrading. Since the signature comparison and verification process is executed on the cloud server 5, the system can be easily integrated and expanded with other applications and services. For example, it can be connected with other authentication systems, payment systems, etc. to achieve more functions and application scenarios.

[0047] like Figure 2 , Figure 3 and Figure 6 As shown, in a preferred example, the encryption module 102 includes a storage module 104, the storage module 104 is connected to a power supply module 105, a power-off module 106 is arranged between the storage module 104 and the power supply module 105, the power-off module 106 is mechanically connected to the shell of the display terminal, and the abnormal opening of the shell of the display terminal triggers the power-off module 106 to disconnect the power supply of the storage module 104.

[0048] The power-off module 106 includes a button, which is in contact with the housing of the display terminal.

[0049] The storage module 104 is used to store the encrypted signature data. In order to ensure that the data in the storage module 104 can be protected when the physical security is threatened, a power-off module 106 is set to be connected to the storage module 104 and the power supply module 105. When the shell of the display terminal is abnormally opened (unauthorized disassembly), the key CN will be triggered by pressure or displacement, thereby starting the function of the power-off module 106. The power supply of the storage module 104 will be immediately cut off when the power-off module 106 is triggered. Since the data of the storage module 104 is lost when there is no power supply, it can effectively prevent the sensitive data from being illegally read or tampered when the display terminal is illegally opened, thereby enhancing the security of the system data. Since the power-off module 106 is mechanically connected to the shell of the display terminal, its triggering condition is closely related to the physical state of the display terminal, making the system more reliable. The power-off module 106 will only be triggered when the physical state of the display terminal changes, reducing the possibility of misoperation.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A signature-secure touch display terminal, characterized in that: It includes a display mainboard, on which a signal processing module, an encryption module and a data transmission module are arranged. The encryption module is data-connected to a signature input module for signing. The encryption module is used to encrypt the signature data of the signature input module and send it to the signal processing module. The signal processing module is data-connected to a host computer for comparing or storing signatures via the data transmission module.

2. A signature-secure touch display terminal according to claim 1, characterized in that: The signature input module includes a display device data-connected to the signal processing module and a handwriting module data-connected to the display device.

3. A signature-secure touch display terminal according to claim 2, characterized in that: The display device is a touch display screen.

4. A signature-secure touch display terminal according to claim 2, characterized in that: The handwriting module is an electromagnetic handwriting module.

5. A signature-secure touch display terminal according to any one of claims 1 to 4, characterized in that: The data transmission module is connected to the transfer module, the encryption module and the host computer are connected via the transfer module data, the transfer module is used to convert the data between the encryption module and the host computer, and the transfer module is connected to the host computer data.

6. A signature-secure touch display terminal according to claim 5, characterized in that: The data transmission module includes a USB expansion module, the USB expansion module is connected to the encryption module, the USB expansion module is connected to the transfer module via a Type-C line, and the encryption module and the transfer module are connected via the USB expansion module data.

7. A signature-secure touch display terminal according to claim 5, characterized in that: A USB data cable and an HDMI data cable are connected between the transfer module and the host computer. The host computer sends a display signal to the transfer module via the HDMI data cable, and the transfer module sends signature data to the host computer via the USB data cable.

8. A signature-secure touch display terminal according to any one of claims 1 to 4, characterized in that: The host computer is communicatively connected to a cloud server, and the cloud server is used for comparing signatures.

9. A signature-secure touch display terminal according to any one of claims 1 to 4, characterized in that: The encryption module includes a storage module, the storage module is connected to a power supply module, a power-off module is arranged between the storage module and the power supply module, the power-off module is mechanically connected to the shell of the display terminal, and abnormal opening of the shell of the display terminal triggers the power-off module to disconnect the power supply of the storage module.

10. A signature-secure touch display terminal according to claim 9, characterized in that: The power-off module includes a button, and the button is in contact with a housing of the display terminal.

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