Card reader with double-end screen display

Abstract

The utility model discloses a double-end screen display card reader, comprising a card reader housing, two ends of the card reader housing are respectively provided with a first interface and a second interface, the top surface of the card reader housing is provided with a TFT-LCD screen, the card reader housing is internally provided with a circuit board, and the circuit board is provided with a first interface and a second interface. The circuit board is provided with an MCU chip and a memory card in which animation image data is pre-stored, and the first interface, the second interface, the TFT-LCD screen and the memory card are electrically connected with the MCU chip respectively. The system integrates the functions of dynamic information display (advertising), dual-interface compatibility and data transmission, is suitable for scenes of enterprise propaganda, product demonstration and the like, and effectively solves the problems of single function and burn-in risk.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, specifically to a dual-screen card reader. Background Technology

[0002] In the current field of electronic devices, traditional card readers or USB flash drives have many limitations. On the one hand, traditional card readers / USB flash drives have relatively simple functions, usually only supporting data transfer and lacking visual interactive functions, thus failing to meet the diverse needs of users. For example, in corporate promotional scenarios, they cannot intuitively display product information and advertising content.

[0003] On the other hand, existing storage devices with screens also have problems. Some storage devices display static and non-updateable content, such as only showing capacity or brand logos, making it difficult to display dynamic information. Furthermore, some storage devices using OLED screens are at risk of burn-in, which increases maintenance costs. Utility Model Content

[0004] In order to overcome the problems of existing card readers / storage devices being unable to dynamically update display content and having the risk of screen burn-in, this utility model provides a card reader with a dual-head screen display.

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

[0006] A dual-screen card reader includes a card reader housing, with a first interface and a second interface respectively provided at both ends of the card reader housing, a TFT-LCD screen provided on the top surface of the card reader housing, a circuit board provided inside the card reader housing, an MCU chip and a memory card pre-stored with animation image data provided on the circuit board, and the first interface, the second interface, the TFT-LCD screen and the memory card are electrically connected to the MCU chip respectively.

[0007] As a preferred embodiment of this utility model, the card reader housing includes an upper shell and a lower shell detachably connected to the upper shell, the circuit board is placed inside the lower shell, and the TFT-LCD screen is fixed to the top of the upper shell.

[0008] As a preferred embodiment of this utility model, a screen mounting groove is provided on the top of the upper shell, and the TFT-LCD screen is fixed in the screen mounting groove.

[0009] As a preferred embodiment of this utility model, the TFT-LCD screen is fixed in the screen mounting groove by a first 3M adhesive tape.

[0010] As a preferred embodiment of this utility model, the upper shell is provided with a lens mounting groove above the screen mounting groove. The lens mounting groove is connected to the screen mounting groove. A display lens is fixed in the lens mounting groove, and the display lens is located directly above the TFT-LCD screen.

[0011] As a preferred embodiment of this utility model, the display lens is fixed in the lens mounting groove by a second 3M adhesive tape.

[0012] As a preferred embodiment of this utility model, the display lens is a PMMA transparent display lens.

[0013] As a preferred embodiment of this utility model, the upper shell is provided with locking elements on both sides, and the lower shell is provided with snap-fit ​​positions on both sides that engage with the locking elements.

[0014] As a preferred embodiment of this utility model, it further includes a first protective cap and a second protective cap. The first protective cap is inserted into one end of the card reader housing and covers the first interface, and the second protective cap is inserted into the other end of the card reader housing and covers the second interface.

[0015] In a preferred embodiment of this utility model, the first interface is a Type-C interface and the second interface is a USB-A interface.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model integrates dynamic information display (advertising), dual interface compatibility and data transmission functions, and is suitable for scenarios such as corporate publicity and product demonstration, thus solving the problem of single function;

[0018] 2. By playing pre-stored animated image data in real time through the TFT-LCD screen, compared with the traditional static screen, dynamic and visual information interaction is achieved, improving user experience and information transmission efficiency;

[0019] 3. Replacing OLED screens with TFT-LCD screens eliminates the risk of screen burn-in at the hardware level, extends the lifespan of equipment, and reduces maintenance costs for enterprises or users.

[0020] 4. The memory card is replaceable, allowing for flexible capacity expansion;

[0021] 5. The overall structure is compact and easy to carry. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 these drawings without creative effort.

[0023] Figure 1 This is an exploded view of the structure of a dual-screen card reader according to one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a dual-screen card reader in one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a dual-screen card reader according to one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the circuit board structure in one embodiment of the present invention;

[0027] Figure 5 This is a circuit diagram of a dual-screen card reader in one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the upper shell in one embodiment of the present invention.

[0029] In the diagram,

[0030] 1. Card reader housing; 101. Upper shell; 1011. Screen mounting slot; 1012. Lens mounting slot; 1013. Card; 102. Lower shell; 1021. Snap-on slot; 2. First interface; 3. Second interface; 4. TFT-LCD screen; 401. Flexible flat cable; 5. Circuit board; 501. MCU chip; 502. Memory card; 503. SD card slot; 504. Programming interface; 6. Display lens; 7. First 3M adhesive tape; 8. First protective cap; 9. Second protective cap. Detailed Implementation

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0032] It should be noted that the terms "installation," "setting," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used in the application's product, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features.

[0033] Please see Figures 1 to 4 This utility model provides a dual-screen card reader, including a card reader housing 1. A first interface 2 and a second interface 3 are respectively provided at both ends of the card reader housing 1. A TFT-LCD screen 4 is provided on the top surface of the card reader housing 1. A circuit board 5 is provided inside the card reader housing 1. An MCU chip 501 and a memory card 502 are provided on the circuit board 5. The first interface 2, the second interface 3, the TFT-LCD screen 4, and the memory card 502 are electrically connected to the MCU chip 501. The memory card 502 is pre-stored with animation image data. Users can upload multiple images (i.e., animation image data) to the storage area of ​​the memory card 502 via a PC. The first interface 2 is a Type-C interface, mainly used for connecting mobile phones and tablets. The second interface 3 is a USB-A interface, mainly used for connecting to a computer. Both interfaces can automatically identify the target device (such as a mobile phone, computer, or tablet) and prioritize the use of high-speed protocols (such as USB 3.2) to achieve fast data transfer and support hot-swapping.

[0034] Working process: Insert the card reader into the current device, such as a mobile phone, computer, or tablet, and the TFT-LCD screen 4 will automatically rotate the animation image data pre-stored on the memory card 502.

[0035] Please see Figure 5Specifically, MCU chip 501 can autonomously process transactions, transmit data, and receive data. Pins 7, 12, 13, 14, 16, and 17 of MCU chip 501 are data pins, pin 6 is connected to power, and pin 4 is grounded. Pins 1, 2, 5, and 6 of memory card 502 are data pins, pins 3, 7, and 8 are connected to power, and pin 4 is grounded. Pins 3, 4, 5, 6, and 8 of TFT-LCD screen 4 are data pins, pins 1 and 7 are connected to power, and pin 2 is grounded. Pins 7, 12, 13, and 14 of MCU chip 501 are connected to pins 1, 6, 5, and 2 of memory card 502, respectively. Pins 12, 13, 16, 17, and 18 of MCU chip 501 are connected to pins 6, 5, 4, 8, and 3 of TFT-LCD screen 4, respectively.

[0036] During operation, the MCU chip 501 first reads animation image data from the memory card 502. Based on the type and interface protocol of the memory card 502, and using the corresponding read instructions and methods, the MCU chip 501 sends a read command via the SPI interface to read the animation image data from the memory card 502 into its internal storage. After processing, the animation image data is transferred to the LCD driver. Then, the MCU chip 501 sends relevant control signals to the TFT-LCD screen 4 via pins 16, 17, and 18, and transmits the processed animation image data to the TFT-LCD screen 4 for display via pins 12 and 13. The MCU chip 501 sequentially writes each frame of the animation data into the frame buffer. Finally, the LCD driver reads the data from the frame buffer and displays it on the TFT-LCD screen 4, thus achieving dynamic information display.

[0037] Please see Figure 1 In one embodiment, the card reader housing 1 includes an upper housing 101 and a lower housing 102 detachably connected to the upper housing 101. A circuit board 5 is placed inside the lower housing 102. A screen mounting slot 1011 is provided at the top of the upper housing 101, and a TFT-LCD screen 4 is fixed within the screen mounting slot 1011. Simultaneously, a lens mounting slot 1012 is provided above the screen mounting slot 1011 on the upper housing 101. The lens mounting slot 1012 communicates with the screen mounting slot 1011, and a display lens 6 is fixed within the lens mounting slot 1012. The display lens 6 is positioned directly above the TFT-LCD screen 4, forming a physical protective layer to prevent the TFT-LCD screen 4 from directly contacting external dust, moisture, or scratches, thus extending the screen's lifespan. The aforementioned mounting method of the circuit board 5, TFT-LCD screen 4, and display lens 6 makes the overall structure of the card reader more compact, smaller in size, and easier to carry.

[0038] Please see Figure 1In one embodiment, the TFT-LCD screen 4 is fixed in the screen mounting slot 1011 by the first 3M adhesive tape 7, and the display lens 6 is fixed in the lens mounting slot 1012 by the second 3M adhesive tape. The 3M adhesive tape fixing method has both stability and detachability, avoids the use of screws and other complex fasteners, simplifies the assembly process, and improves production efficiency.

[0039] In one embodiment, the display lens 6 is a PMMA transparent display lens. PMMA has a high light transmittance (over 92%), close to that of glass, ensuring that the color and brightness of the TFT-LCD screen 4 are transmitted without loss, and that dynamic images are displayed clearly and transparently.

[0040] Please see Figure 1 , Figure 4 In one embodiment, the upper shell 101 has clips 1013 on both sides of its side edges, and the lower shell 102 has latching positions 1021 on both sides of its side edges that engage with the clips 1013. The upper shell 101 and the lower shell 102 are fixed together by the snap-fit ​​mechanism. The snap-fit ​​structure allows for assembly and disassembly without tools, making it convenient. When repairing or replacing components (such as a faulty circuit board 5, a damaged screen, or a replacement of the memory card 502), the upper shell 101 and the lower shell 102 can be separated within seconds.

[0041] Please see Figure 1 , Figure 2 In one embodiment, the card reader further includes a first protective cap 8 and a second protective cap 9. The first protective cap 8 is inserted into one end of the card reader housing 1 and covers the first interface 2, while the second protective cap 9 is inserted into the other end of the card reader housing 1 and covers the second interface 3. The first protective cap 8 and the second protective cap 9 serve a dustproof function, preventing dust and liquids (such as splashes) from entering the unused interface, avoiding oxidation or short circuits of the metal contacts. This is especially suitable for scenarios where the interface is not used for extended periods or is carried outdoors, reducing the probability of interface failure. The first protective cap 8 and the second protective cap 9 are fixed by insertion and can be quickly removed when in use; they can be promptly covered when not in use, balancing protection and ease of operation.

[0042] In one embodiment, the card reader housing 1, the first protective cap 8, and the second protective cap 9 are all made of ABS+PC hybrid material, which reduces the cost by at least 30% compared to metal housings and offers more diverse design options.

[0043] Please see Figure 4 In one embodiment, the circuit board 5 is provided with an SD card slot 503 for connecting the memory card 502, so as to freely replace the memory card 502 with different storage capacities.

[0044] Please see Figure 1In one embodiment, the TFT-LCD screen 4 is connected to the circuit board 5 via a flexible flat cable 401. The flexible flat cable 401 employs a pluggable connector design (such as an FFC / FPC connector), enabling electrical connection between the TFT-LCD screen 4 and the circuit board 5 without soldering, significantly reducing assembly difficulty and improving production efficiency. During maintenance, simply unplug the old cable and insert the new one; no specialized soldering tools are required, lowering the maintenance threshold.

[0045] Please see Figure 4 In one embodiment, the circuit board 5 is provided with a programming interface 504, which is used to connect to an external programming device (such as a programmer or debugger) to realize program writing, debugging or firmware upgrade of the MCU chip 501.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0047] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A dual-screen card reader, characterized in that, The device includes a card reader housing, with a first interface and a second interface respectively at both ends of the card reader housing. A TFT-LCD screen is provided on the top surface of the card reader housing. A circuit board is provided inside the card reader housing, and an MCU chip and a memory card pre-stored with animation image data are provided on the circuit board. The first interface, the second interface, the TFT-LCD screen and the memory card are electrically connected to the MCU chip.

2. The dual-screen display card reader according to claim 1, characterized in that, The card reader housing includes an upper shell and a lower shell detachably connected to the upper shell. The circuit board is placed inside the lower shell, and the TFT-LCD screen is fixed to the top of the upper shell.

3. The dual-screen display card reader according to claim 2, characterized in that, The top of the upper shell is provided with a screen mounting slot, and the TFT-LCD screen is fixed in the screen mounting slot.

4. The dual-screen display card reader according to claim 3, characterized in that, The TFT-LCD screen is fixed in the screen mounting slot by a first 3M adhesive tape.

5. The dual-screen display card reader according to claim 3, characterized in that, The upper shell is provided with a lens mounting slot above the screen mounting slot. The lens mounting slot is connected to the screen mounting slot. A display lens is fixed in the lens mounting slot, and the display lens is located directly above the TFT-LCD screen.

6. The dual-screen display card reader according to claim 5, characterized in that, The display lens is fixed in the lens mounting slot by a second 3M adhesive tape.

7. The dual-screen display card reader according to claim 5, characterized in that, The display lens is a PMMA transparent display lens.

8. The dual-screen display card reader according to claim 1, characterized in that, The upper shell has locking devices on both sides, and the lower shell has snap-fit ​​positions on both sides that engage with the locking devices.

9. The dual-screen display card reader according to claim 1, characterized in that, It also includes a first protective cap and a second protective cap. The first protective cap is inserted into one end of the card reader housing and covers the first interface. The second protective cap is inserted into the other end of the card reader housing and covers the second interface.

10. The dual-screen display card reader according to claim 1, characterized in that, The first interface is a Type-C interface, and the second interface is a USB-A interface.

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