CN1304115A - Memory card with double interface and its conversion module - Google Patents

Abstract

The invention relates to a storage card with double interfaces and a conversion module thereof, wherein the storage card internally comprises a flash memory (or a read-only memory) and a micro-control unit, wherein the micro-control unit is composed of a USB interface controller, a HOST interface controller and a microprocessor matched with related Firmware (Firmware), and the micro-control unit is simultaneously provided with a HOST interface and a USB interface, wherein the HOST interface is used for connecting products, and the USB interface is connected with a USB interface of a computer through the conversion module, so that a computer and other electronic devices can conveniently read or store data of the storage card.

Description

Memory card with double interface and its conversion module

The invention relates to a memory card with double interfaces and a conversion module thereof.

With the development of computer technology, it is gradually integrated into people's daily life. In fact, many products have been computerized, such as electronic dictionaries, translators, digital cameras, etc. that are often used by modern people. And after use, it involves connection processing with the computer. Taking a digital camera as an example, when taking a picture, it does not leave an image with a negative film like a traditional camera, but converts it into digital data and records it in the memory card built in the camera. In the process of conversion, it is sent to the computer for storage and display or to be printed.

Due to the advancement of technology, the above-mentioned memory cards are different from traditional floppy disks in terms of size and capacity. The STONE cards, SmartMedia cards, MMC cards, Memory Stick cards and CompactFlash cards in the market have generally reached the level of thinness and lightness. The requirement of shortness and capacity is above M byte. Although this type of memory card has achieved the purpose of miniaturization of the product, it is not a standard specification of the computer. When connecting the memory card to the computer, the following methods must be used:

1. Use a card reader

This type of card reader is designed for various memory cards, such as SmartMedia card, MMC card, Memory Stick card, and CompactFlash card. Then insert the memory card into the card reader to read the contents of the memory card through the card reader.

2. Use the conversion floppy disk: the size of this conversion floppy disk is the same as that of the 3.5-inch floppy disk, and there is a conversion slot on it for the insertion of the memory card. After the memory card is inserted, the conversion floppy disk is inserted into the 3.5-inch disk drive of the computer. read and write.

However, the above two methods have disadvantages. For example, most card readers can only read, but cannot write data, and the floppy disk is read and written by the floppy disk drive, the execution speed is obviously low, and because of the conversion With the multiple conversions of floppy disks and floppy disk drives, the possibility of mechanical failure is also relatively increased; therefore, further research is needed on the existing memory card and computer connection method.

The object of the present invention is to provide a memory card and a conversion module with dual interfaces, which can be conveniently connected with a computer, increase execution speed and reduce mechanical failure.

For the realization of the above-mentioned purpose of the invention, a kind of memory card with double interface is provided, and it comprises a memory group and a micro-control unit connected with this memory group, it is characterized in that: this micro-control unit has a USB interface and A HOST interface, the USB interface is connected to the computer so that the computer can read and write data to the memory card, and the HOST interface is used to connect related products with the memory card installed to read, write and record data.

The above-mentioned memory card with dual interfaces, wherein the micro-control unit includes: a microprocessor, which contains relevant firmware inside; a USB interface controller, which is connected with the microprocessor and the memory bank respectively, and it can connect the memory bank The stored data is converted into the USB mode and sent out; a HOST interface controller is connected to the microprocessor and the memory group respectively so as to convert the data into the same data format as the corresponding product.

In the aforementioned memory card with dual interfaces, the memory group is composed of several flash memories.

In the aforementioned memory card with dual interfaces, the memory bank is composed of several read-only memories.

Simultaneously also for the realization of the purpose of the above invention, a conversion module of a dual-interface memory card is provided, which is characterized in that it comprises: a housing with a memory card slot for inserting a memory card; a USB connector for Connect to the USB slot on the computer; a terminal block is provided with several terminals, one end of which is connected with the aforementioned USB connector, and the other end is correspondingly inserted with the interface terminal interface set on the memory card.

The conversion module of the above-mentioned dual-interface memory card, wherein, the casing is composed of a watch case and a bottom case, and opposite notches are respectively formed at both ends, and the notch opposite to one end forms a memory card slot, and the other end is opposite to each other. The notch is for installing the USB connector.

The conversion module of the above-mentioned dual-interface memory card, wherein, the terminal seat is composed of an H-shaped frame body, which includes two opposite side frames and a connecting rib, wherein rail grooves are respectively formed on the opposite inner walls of the two side frames, and are connected The rib is pierced with several terminals.

Due to the above-mentioned technical solution, the present invention enables the computer to directly read the memory data of the memory card through the high-speed interface, so that the reading and writing operation of the computer is more convenient and fast.

The specific structural features and purposes of the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the circuit diagram of memory card of the present invention;

Fig. 2 is the circuit diagram of the micro-control unit set in the memory card of the present invention;

Fig. 3 is the appearance diagram of the embodiment of the present invention;

Fig. 4 is an exploded view of an embodiment of the present invention;

Fig. 5 is a sectional view of an embodiment of the present invention;

Fig. 6 is a reference diagram of the use state of an embodiment of the present invention;

Fig. 7 is a reference diagram of the use status of another embodiment of the present invention.

As shown in Figure 1, the circuit structure of the present invention includes a micro-control unit 10 and a memory group 20, wherein the micro-control unit 10 has two groups of I/O interfaces at the same time, and one of the I/O interfaces is for the computer. Corresponding interface port is connected, and in this embodiment, it is a kind of USB interface, and then another group of I/O interface is then used as HOST interface, for product connection, and in this embodiment, it is SPI format; Group 20 can be composed of flash memory or read-only memory, and in this embodiment, it is composed of multiple groups of flash memory.

Please refer to shown in Fig. 2 about the internal structure of above-mentioned micro control unit 10, it comprises a microprocessor 11, a memory interface 12, a USB interface controller 13, a HOST interface controller 14 etc.; Wherein:

The microprocessor 11 is provided with relevant execution firmware, which can be used to execute various data in-out conversion processes.

The memory interface 12 is used as the connection interface between the memory bank 20, the microprocessor 11, the USB interface controller 13 and the HOST interface controller 14;

The USB interface controller 13 is connected with the memory bank 20 through the memory interface 12 through an I/O end, and is connected with the microprocessor 11 through an I/O end, and then uses an I/O end as a USB connection interface.

The HOST interface controller 14 is connected with the memory bank 20 through the memory interface 12 through an I/O terminal, and connected with the microprocessor 11 through an I/O terminal, and then uses an I/O terminal as the HOST interface.

The above-mentioned circuit is determined by the microprocessor 11 to determine the working state of the memory card. When the memory card is connected to the computer through the USB interface, the microprocessor 11 will read data from the memory bank 20 and send it to the USB interface for control through the memory interface 12. The device 13 converts the data into a USB format, and then sends the data to the computer via the USB interface. At the same time, the computer can also write data to the memory card through the USB interface.

When the memory card is installed inside the product and is connected with the HOST interface, the data output interface of the product is sent through the HOST interface, processed by the microprocessor 11 and stored in a specific address of the memory bank 20 .

Because the memory card of the present invention has dual interfaces such as HOST and USB, it can not only be set in related products for storing and recording data, but also can transfer the stored data to a computer through the USB interface, or write data by the computer.

An example is provided below to illustrate the specific structure and usage of the present invention.

First please refer to shown in Fig. 3, a memory card 30 and a conversion module 40, wherein the interior of the memory card 30 is respectively provided with the above-mentioned micro control unit 10 and the memory bank 20, and its front end is provided with an interface terminal port 31, wherein four groups of terminals As the USB interface, it is connected with the USB interface controller 13 in the micro-control unit 10, and the remaining terminals are used as the HOST interface, and is connected with the HOST interface controller 14 in the micro-control unit 10; To connect, the memory card 30 will be equipped with a conversion module 40, and the connector on the conversion module 40 is plugged into the USB interface port of the computer to form a connection.

Please refer to Figure 4 for the detailed structure of the conversion module 40. It is mainly composed of a symmetrically shaped watch case 41 and a bottom case 42. A housing 43 is provided inside and a USB port is provided at one end. connector 44; wherein:

The watch case 41 and the bottom case 42 can be relatively combined by appropriate means of combination, and the watch case 41 and the bottom case 42 are respectively formed with relative gaps at both ends, wherein the relative gaps at one end form a memory card slot 45, and the other end The relative notch of the USB connector 44 is provided, and the above-mentioned memory card slot 45 is correspondingly located on the outside of the terminal block 43;

The terminal base 43 is an H-shaped frame body, which includes two opposite side frames and a connecting rib connecting the two side frames, wherein the two side frames are respectively formed with a rail groove 430 on the opposite inner side wall for the memory card 30 Correspondingly sliding in, several terminals 431 are pierced on the connecting rib, and one end of each terminal 431 is aligned with the interface terminal interface 31 on the memory card 30 respectively, and its other end is then connected with the USB connector 44 respectively. Therefore, when storing The card 30 is inserted into the conversion module 40, and its interface terminal interface 31 is the corresponding insertion of each terminal 431 in the terminal block 43 (as shown in Figure 5), and the interface terminal port 31 is connected to the USB connector 44 through each terminal 431 immediately .

6, when the conversion module 40 is plugged into the USB slot 51 of the computer 50 with the USB connector 44, the memory card 30 in the conversion module 40 forms a connection with the computer 50 through the USB interface. 30 is directly connected with the computer 50 through the USB interface interface, which can utilize the characteristics of USB high-speed work to improve the data read and write speed, so that the computer 50 can read and write the memory card 30 more conveniently and quickly.

Above-mentioned conversion module 40 except being directly plugged into the original USB slot 51 on the computer 50 can also be plugged into the USB slot 61 on the hub (Hub) 60 as shown in FIG. Wire.

From the above, we can understand the specific structure and working principle of the present invention. The above design can be applied to existing STONE cards, SmartMedia cards, MMC cards, Memory Stick cards and CompactFlash cards, etc., so that computers can conveniently read and write various storage devices. Card.

Claims (7)

1. A memory card with dual interfaces, which includes a memory bank and a micro-control unit connected with the memory bank, characterized in that: the micro-control unit has a USB interface and a HOST interface simultaneously, and the USB interface is It is connected to the computer so that the computer can read and write data to the memory card, and the HOST interface is used to connect related products with the memory card installed to read and write data. 2. The memory card with dual interface according to claim 1, characterized in that, the micro-control unit comprises: a microprocessor, which contains relevant firmware inside; a USB interface controller, which is respectively connected with the microprocessor The connection between the memory bank and the memory bank, which can convert the data stored in the memory bank into USB mode and send it out; a HOST interface controller, which is connected to the microprocessor and the memory bank respectively, so as to convert the data into the same data as the corresponding product Format. 3. The memory card with dual interfaces according to claim 1 or 2, characterized in that: said memory bank is composed of several flash memories. 4. The memory card with dual interfaces according to claim 1 or 2, characterized in that: said memory bank is composed of several read-only memories. 5. A conversion module for a dual-interface memory card, characterized in that it includes: a housing with a memory card slot for inserting a memory card; a USB connector for plugging into a USB slot on a computer; A terminal seat is provided with several terminals, one end of which is connected to the USB connector, and the other end is correspondingly inserted into the interface terminal interface provided on the memory card. 6. The conversion module for a dual-interface memory card according to claim 5, wherein the housing is composed of a watch case and a bottom case opposite to each other, and opposite notches are respectively formed at both ends, and one end is opposite to the other. The notch on the other end is used to form the memory card slot, and the opposite notch on the other end is for installing the USB connector. 7. The conversion module for a dual-interface memory card according to claim 5, wherein the terminal block is composed of an H-shaped frame, which includes two opposite side frames and a connecting rib, wherein the two sides of the frame Rail grooves are respectively formed on the opposite inner walls, and several terminals are pierced through the connecting ribs.

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