CN100378638C - Interface adapter for external MS memory card - Google Patents

Abstract

The present invention is an external MS memory card interface adapter, which is provided with an MS memory card connection interface, which is sequentially connected to a first microcontroller, a second microcontroller and a memory card connection interface; when the MS memory card connection interface is connected to a host end, and a memory card is connected to the memory card connection interface, the host end can issue instructions to the memory card and perform data transmission. The first microcontroller converts the instructions issued by the host end or the transmitted data into a format acceptable to the second microcontroller, and the second microcontroller converts the instructions or data received by it into a format acceptable to the memory card, and then transmits it to the memory card for storage. The second microcontroller is a programmable microcontroller, and the manufacturer can write the control program into the second microcontroller for different types of memory cards to reduce inventory costs, thereby reducing sales costs and increasing consumers' willingness to buy.

Description

External MS memory card interface adapter device

technical field

The invention relates to an external MS memory card interface conversion device, especially a memory card interface conversion device that enables a host to access memory cards with different interfaces through the MS memory card interface.

Background technique

Due to the rapid development of computer technology, it is the general trend to gradually integrate it into daily life. In fact, many products have been computerized, such as electronic dictionaries, electronic translators, digital cameras and other portable electronic devices that people often use. Before, during, and after use, portable electronic devices involve online processing with computers. Taking digital cameras as an example, when taking pictures, they do not leave images on negatives like traditional cameras, but convert them into data And record it in the memory card built in the camera, and then send it to the computer for storage, display or printing through conversion.

Thanks to the advances in technology, the above-mentioned memory cards are not comparable to traditional disks in terms of size or capacity. Secure Digital (SD) cards, Multi Media Card (MMC) cards, and Compact Flash (CF) cards or Smart Media (SM) cards have generally met the requirements of thinness and shortness, and the capacity can also allow users to store a large amount of data. Among them, the MS memory card (Memory Stick) has a considerable market share, because of its data security protection function, so that various portable electronic devices, such as notebook computers, digital cameras, digital video recorders, can be seen MS memory card (Memory Stick) In the future, the scope of application will be extended to electronic devices such as walkmans, mobile phones, car audio and home audio.

However, compared with memory cards other than MS memory cards, MS memory cards are more expensive, so although most electronic devices can generally see MS interface slots, users are more willing to buy MS memory cards than other memory cards. Card low. Furthermore, most electronic devices only support a single type of memory card, so that many memory cards cannot replace each other. If it is necessary to install a reading device for each type of memory card, it will not only increase the cost of the electronic device, but also not meet the economic benefits. It also makes the electronic device unable to meet the current trend of lightness, thinness, shortness and smallness. In addition, to access data in a certain type of memory card, it is necessary to replace different types of adapters complicatedly, which will cause inconvenient and time-consuming use.

Therefore, how to transfer different types of storage devices to a format that can be read by the common MS interface, and avoid the inconvenience of having to replace different types of dedicated adapters every time a different type of storage device is used, The problem to be solved by the present invention is to allow users to use the MS interface to access other low-priced storage devices, and to save the cost of installing other types of storage devices in electronic devices.

Contents of the invention

The main purpose of the present invention is to provide an external MS memory card interface adapter device, the device is provided with a first microcontroller and a second microcontroller, the second microcontroller is a programmable microcontroller, allowing manufacturers The control program can be written into the second micro-controller for different types of memory cards, so that manufacturers in the prior art have to stock a variety of different second micro-controllers in order to meet the requirements of various memory card specifications. device, and the inventory cost is increased, the relative selling price will also be increased, which reduces consumers' willingness to buy.

In order to achieve the above-mentioned purpose and effect, the technical means adopted in the present invention are as follows:

An external MS memory card interface adapter device, the MS memory card interface adapter device is provided with an MS memory card connection interface, and the MS memory card connection interface is sequentially connected with a first microcontroller, a second microcontroller and Memory card connection interface; where:

The MS memory card connection interface is electrically connected to the MS memory card connection interface set on the default host;

The first microcontroller is provided with an MS memory card interface, and the MS memory card interface is sequentially connected to a microprocessor and a data bus interface;

The second microcontroller is a programmable microcontroller, and is provided with the same data bus interface as that of the first microcontroller, and the data bus interface is sequentially connected to a microprocessor and a memory card interface;

The memory card connection interface is connected to the memory card interface provided by the second microcontroller, and the memory card connection interface can be connected to the memory card;

When the host side accesses the data of the memory card, the first microcontroller will convert the command or transmitted data from the host side into the format of the data bus interface and send it to the second microcontroller, and the second microcontroller The device will convert the command or data it receives into a format acceptable to the memory card, and then send it to the memory card for storage, and the second microcontroller will convert the data sent by the memory card into the format of the data bus interface, And send it to the first microcontroller, and then convert it into the format of MS memory card interface by the first microcontroller, and then send it to the host computer for processing.

In order to achieve the above purpose and effect, the present invention also includes another technical feature:

An external MS memory card interface adapter device, the MS memory card interface adapter device is provided with an MS memory card connection interface, and the MS memory card connection interface is sequentially connected with a first microcontroller, a second microcontroller and Universal serial bus connection interface; where:

The MS memory card connection interface can be electrically connected with the MS memory card connection interface set on the default host;

The first microcontroller is provided with an MS memory card interface, and the MS memory card interface is sequentially connected to a microprocessor and a data bus interface;

The second microcontroller is a programmable microcontroller, and is provided with the same data bus interface as that of the first microcontroller, and the data bus interface is sequentially connected to the microprocessor and the universal serial bus interface;

The universal serial bus connection interface is connected to the universal serial bus interface provided by the second microcontroller, and the universal serial bus connection interface can be connected to the storage device; when the host end accesses the data of the storage device , the first microcontroller will convert the command or data transmitted from the host to the format of the data bus interface and send it to the second microcontroller, and the second microcontroller will convert the received command or data Convert it into a format that the storage device can receive, and then send it to the storage device for storage, and the data transmitted by the storage device, the second microcontroller will convert it into the format of the data bus interface, and send it to the first microcontroller, and then The first micro-controller converts it into the format of the MS memory card interface, and then sends it to the host for processing.

In order to achieve the above purpose and effect, the present invention also includes another technical feature:

An external MS memory card interface adapter device, the MS memory card interface adapter device is provided with an MS memory card connection interface, and the MS memory card connection interface is sequentially connected with a first microcontroller, a second microcontroller and Universal serial bus connection interface; where:

The MS memory card connection interface can be electrically connected with the MS memory card connection interface set on the default host;

The first microcontroller is provided with an MS memory card interface, and the MS memory card interface is sequentially connected to a microprocessor and a data bus interface;

The second microcontroller is a programmable microcontroller, and is provided with the same data bus interface as that of the first microcontroller, and the data bus interface is sequentially connected to a microprocessor and a USB OTG interface;

The universal serial bus connection interface is connected to the universal serial bus interface provided by the second microcontroller, and the universal serial bus interface can be connected to mobile electronic products;

When the universal serial bus connection interface set by the mobile electronic product is connected to the universal serial bus connection interface set by the MS memory card interface adapter device, the USB OTG interface provides the driver required by the mobile electronic product, so , the host end can access the data in the memory of the mobile electronic product through the MS memory card interface adapter device.

The features and functions of the present invention will be described in detail below according to the drawings and preferred embodiments to facilitate a complete understanding.

Description of drawings

Fig. 1 is a block diagram of a preferred embodiment of the present invention.

FIG. 2 is a block diagram of a second preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of transmission signals in a preferred embodiment of the present invention.

FIG. 4 is a block diagram of a third preferred embodiment of the present invention.

FIG. 5 is a block diagram of a fourth preferred embodiment of the present invention.

Explanation of symbols in the figure:

1 MS memory card interface adapter device

11 MS memory card connection interface

12 The first microcontroller

121 MS memory card interface

122 microprocessors

123 data bus interface

124 auxiliary control circuit

13 second microcontroller

131 data bus interface

132 microprocessors

133 memory card interface

134 auxiliary control circuit

135 Universal Serial Bus Interface

136 USB OTG interface

14 Memory card connection interface

15 universal serial bus connection interface

2 host side

21 MS memory card connection interface

3 memory cards

4 storage device

5 Mobile Electronics

51 universal serial bus connection interface

52 memory

Detailed ways

See also shown in Fig. 1, be the block diagram of preferred embodiment of the present invention, can clearly find out from the figure, MS memory card interface switching device 1 of the present invention is provided with MS memory card connection interface 11, the first micro-controller Device 12, second microcontroller 13 and memory card connection interface 14; Wherein:

The MS memory card connection interface 11 can be electrically connected with the MS memory card connection interface 21 provided on the host terminal 2;

The first microcontroller 12 is provided with a MS memory card interface 121, and the MS memory card interface 121 is connected with a microprocessor 122 and a data bus interface 123 in sequence;

This second microcontroller 13 is a programmable microcontroller, and is provided with the same data bus interface 131 as the data bus interface 123 of the first microcontroller 12, and the data bus interface 131 is connected with microprocessor 132 and A memory card interface 133, and the data bus interface 131 is electrically connected to the data bus interface 123 provided by the first microcontroller 12;

The memory card connection interface 14 is connected to the memory card interface 133 provided on the second microcontroller 13 , and the memory card connection interface 14 can be connected to the memory card 3 .

When the MS memory card connection interface 11 provided on the MS memory card interface adapter 1 is electrically connected to the MS memory card connection interface 21 provided on the host terminal 2, and the memory card connection interface 14 is connected with the memory card 3, the The host terminal 2 can then perform data access to the memory card 3, and when the host terminal 2 issues a storage command in the format of the MS memory card interface 121 to the memory card 3, the storage command will pass through the MS memory card connection interface of the host terminal 2 21 is connected with the MS memory card interface 11 provided by the MS memory card interface adapter 1, and the storage instruction is sent to the MS memory card interface 121 provided by the first microcontroller 12, and the microprocessor 122 will send the MS memory card The storage command received by the interface 121 is converted into a format acceptable to the data bus interface 123, and the converted storage command is set through the data bus interface 123 set by the first microcontroller 12 and the second microcontroller 13. The data bus interface 131 is sent to the microprocessor 132, and the microprocessor 132 will convert the received storage command into a format acceptable to the memory card interface 133, and then send it to the memory card interface 133, and the memory card The interface 133 completes the storage command. At this time, the data to be stored by the host terminal 2 will be sent to the microprocessor 122 through the MS memory card connection interface 11 and the MS memory card interface 121, and the microprocessor 122 will convert the data into data The format acceptable to the bus interface 123 is sent to the microprocessor 132 provided by the second microcontroller 13 through the data bus interface 123, and the microprocessor 132 converts its data format into an acceptable format of the memory card interface 133 format, and then sent to the memory card 3 for storage.

And when the host terminal 2 issues a read command in the format of the MS memory card interface 121 to the memory card 3, the read command will be set by the MS memory card connection interface 21 of the host terminal 2 and the MS memory card interface adapter device 1. The MS memory card connection interface 11, the read command is sent to the MS memory card interface 121 provided by the first microcontroller 12, and the microprocessor 122 will convert the read command received by the MS memory card interface 121 into data The format that the bus interface 123 can accept, and the read command of the converted format is sent to the microcomputer through the data bus interface 123 provided by the first microcontroller 12 and the data bus interface 131 provided by the second microcontroller 13. processor 132, and the microprocessor 132 will convert the received read command into a format acceptable to the memory card interface 133, and then send it to the memory card interface 133, and complete the read command by the memory card interface 133, thus At this time, the data to be read by the host terminal 2 will be sent from the memory card 3 to the microprocessor 132 through the memory card interface 123, and the microprocessor 132 will convert the data format into a format acceptable to the data bus interface 131, Then send to the microprocessor 122 that the first microcontroller 12 is provided with through the data bus interface 131, and the format that the microprocessor 122 converts the data into the MS memory card interface 121 can accept, and then through the MS memory card interface 121 Send it to the host terminal 2 and borrow it, so that the MS memory card connection interface 21 provided on the host terminal 2 can access memory cards of different interfaces through the MS memory card interface adapter device 1 of the present invention, so as to facilitate the use of users .

Furthermore, because the second micro-controller 13 provided by the MS memory card interface adapter 1 of the present invention is made by using a programmable microcontroller, the manufacturer can produce the MS memory card interface adapter 1 according to consumption. The format of the memory card 3 that the operator wants to convert, and then write the control program in the second microcontroller 13, so as to avoid the manufacturer having to stock a variety of different second microcontrollers to meet the needs of multiple different memory card specifications. The controller 13 is used to reduce inventory costs and increase the flexibility of manufacturing, and the second microcontroller 13 can be made of a field programmable gate array (FPGA) or a composite programmable logic device (CPLD).

Moreover, the host terminal 2 can be a desktop computer or a notebook computer, and the data bus interface 123 provided by the first microcontroller 12 and the data bus interface 131 provided by the second microcontroller 13 can be integrated electronic Drive (IDE) interface or dynamic random access memory (SRAM) interface, and the data transmitted by it can be 8 bits or 16 bits, and the memory card interface 133 that this second microcontroller 13 is provided with can be Secure Digital ( SD) card interface, Multi Media Card (MMC) card interface, Compact Flash (CF) card interface or Smart Media (SM) card interface, and memory card connection interface 14 can be Secure Digital (SD) card connection interface, Multi Media Card (MMC) card interface, Compact Flash (CF) card interface or Smart Media (SM) card interface.

Please refer to Fig. 2, shown in Fig. 3, it is the block diagram and the transmission signal schematic diagram of the second preferred embodiment of the present invention, can clearly find out from the figure, the microprocessor 122 that this first microcontroller 12 is provided with The microprocessor 132 that the second microcontroller 13 is provided with is respectively connected with auxiliary control circuit 124 and auxiliary control circuit 134, and auxiliary control circuit 124, 134 can distinguish the signal transmitted by data bus interface 123, 131 as data or instruction , and the command transmission signal is 1 byte (Byte), the data transmission signal is 512+16 bytes (Byte), of which 512 bytes (Byte) are data segments, and 16 bytes (Byte) ) is to expand the data segment to store the data information (information) of the memory card 3, such as: ready to complete (ready), busy (busy), cyclic redundancy check error (CRC error), command error (command error), etc., Each byte (Byte) can be composed of 8 bits (bit) or 16 bits (bit).

Furthermore, the MS memory card adapter 1 is provided with a plurality of memory card connection interfaces 14, and the microprocessor 132 of the second microcontroller 13 is connected with a plurality of memory card interfaces 133 of different formats, and each memory card The interface 133 is respectively connected to the interface 14 of different memory cards, whereby the host end 2 can read or store different memory cards 3 to facilitate the user to use different memory cards 3 .

Please refer to Fig. 4, which is a block diagram of the third preferred embodiment of the present invention. It can be clearly seen from the figure that the difference between another preferred embodiment of the present invention and another preferred embodiment is that the The second micro-controller 132 is connected with a universal serial bus interface 135, and the universal serial bus interface 135 is connected to the universal serial bus connection interface 15 provided by the MS memory card adapter device 1, whereby, Allow the MS memory card connection interface 21 provided on the host terminal 2 to access the storage device 4 connected to the universal serial bus connection interface 15 through the MS memory card interface adapter device 1 of the present invention, and the transmission of data and instructions The method is the same as the aforementioned preferred embodiment.

Furthermore, the storage device 4 can be a flash drive or a hard disk, and the USB connection interface 14 and the USB interface 135 can be one or more than one.

See also shown in Fig. 5, be the block diagram of the 4th preferred embodiment of the present invention, can clearly find out from the figure, the microprocessor 132 that this second microcontroller 13 is provided with, for being connected with USB OTG interface 136 , and the USB OTG interface 136 is connected to the universal serial bus connection interface 15 provided by the MS memory card adapter device 1, and the USB OTG interface 136 provides a way to allow the two devices to be connected without using a computer or It is other host equipment to achieve point-to-point (POINT TO POINT) connection, and when the universal serial bus connection interface 51 set by the mobile electronic product 5 is connected to the universal serial bus interface 51 set by the MS memory card interface adapter device 1 When the bus is connected to the interface 15, the USB OTG interface 136 will provide the required driver program for the mobile electronic product 5, so that the host terminal 2 can access the memory 52 of the mobile electronic product 5 through the MS memory card interface adapter device 1 The data, and the transmission mode of data and instruction is the same as the above-mentioned preferred embodiment.

Furthermore, the mobile electronic product 5 can be a digital camera, a mobile phone or a personal digital assistant (PDA).

In summary, the external MS memory card interface adapter device of the present invention is the key to improving the prior art:

(1) The present invention adopts the MS memory card interface adapter 1 to connect the MS memory card connection interface 21 provided by the host terminal 2, and when the memory card 3 is connected to the MS memory card interface adapter 1, the MS memory card interface The first micro-controller 12 and the second micro-controller 13 provided in the connection device 1 will convert the format of the instructions and data between the host terminal 2 and the memory card 3, so that various types of memory cards 3 can pass through The MS memory card connection interface 21 provided on the host end 2 is used for data transmission with the host end 2, so as to facilitate the use of the user.

(2) The present invention adopts the second micro-controller 13 of the MS memory card interface adapter device 1 to convert the data and instructions of the memory card 3 format, and the second micro-controller 13 is a programmable microcontroller, so that manufacturers can target Different types of memory cards 3 write the control programs into the second microcontroller 13, so as to avoid the need for manufacturers in the prior art to stock a variety of different second Microcontroller 13 increases the inventory cost, and the relative selling price will also increase accordingly, thereby reducing the willingness of consumers to purchase.

The above is only the best specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications that can be easily conceived by those familiar with the art in the field of the present invention can be covered. within the scope of the claims.

The external MS memory card interface adapter device of the present invention has significant effect enhancement during use, and is in compliance with the patent requirements of novelty, inventiveness and progress, and the application is filed according to law.

Claims (21)

1. an external MS memory card interface transfer device, this MS memory card interface transfer device is provided with an MS memory card connection interface, it is characterized in that, The MS memory card connection interface is sequentially connected with a first microcontroller, a second microcontroller and a memory card connection interface; wherein: The MS memory card connection interface can be electrically connected to the MS memory card connection interface set on the default host; The first microcontroller is provided with an MS memory card interface, and the MS memory card interface is sequentially connected to the first microprocessor and the first data bus interface; The second microcontroller is a programmable microcontroller, and is provided with the same second data bus interface as the first data bus interface of the first microcontroller, and the second data bus interface is sequentially connected to the first 2 Microprocessor and memory card interface; The memory card connection interface is connected to the memory card interface provided by the second microcontroller, and the memory card connection interface can be used for memory card connection: When the host terminal accesses the data of the memory card, the first microcontroller will convert the command issued by the host terminal or the transmitted data into the format of the data bus interface and send it to the second microcontroller, and the The second microcontroller will convert the command or data it receives into a format acceptable to the memory card, and then send it to the memory card for storage, and the second microcontroller will convert the data transmitted by the memory card converted into the format of the data bus interface, and sent to the first microcontroller, and then converted into the format of the MS memory card interface by the first microcontroller, and then sent to the host for processing. 2. The external MS memory card interface adapter device as claimed in claim 1, wherein the second microcontroller can be made of a field programmable gate array or a composite programmable logic device. 3. The external MS memory card interface adapter device as claimed in claim 1, characterized in that, the memory card interface and the memory card connection interface can be more than one, wherein the memory card interface and the memory card connection interface The quantities are the same and correspond one-to-one. 4. The external MS memory card interface adapter device according to claim 1, wherein the memory card interface can be an SD card interface or an MMC card interface. 5. The external MS memory card interface conversion device as claimed in claim 1, wherein the host end can be a desktop computer or a notebook computer. 6. The external MS memory card interface adapter device as claimed in claim 1, wherein the data bus interface provided by the first microcontroller and the second microcontroller can be an integrated electronic drive interface or a dynamic random access memory interface. 7. The external MS memory card interface adapter device as claimed in claim 1, wherein the microprocessors provided by the first microcontroller and the second microcontroller can be further respectively connected with distinguishable The received signal is an auxiliary control circuit for data or instructions. 8. an external MS memory card interface adapter, this MS memory card interface adapter is provided with an MS memory card connection interface, it is characterized in that, The MS memory card connection interface is sequentially connected with a first microcontroller, a second microcontroller and a universal serial bus connection interface; wherein: The MS memory card connection interface can be electrically connected with the MS memory card connection interface set on the default host; The first microcontroller is provided with an MS memory card interface, and the MS memory card interface is sequentially connected to the first microprocessor and the first data bus interface; The second microcontroller is a programmable microcontroller, and is provided with the same second data bus interface as the first data bus interface of the first microcontroller, and the second data bus interface is sequentially connected to the first 2 Microprocessor and universal serial bus interface; The universal serial bus connection interface is connected to the universal serial bus interface provided by the second microcontroller, and the universal serial bus connection interface can be connected to the storage device, when the host end accesses the storage device When receiving data, the first micro-controller will convert the command issued by the host or the transmitted data into the format of the data bus interface and send it to the second micro-controller, and the second micro-controller will convert it The received command or data is converted into a format receivable by the storage device, and then sent to the storage device for storage, and the data transmitted by the storage device is converted into the format of the data bus interface by the second microcontroller, And send it to the first microcontroller, and then convert it into the format of the MS memory card interface by the first microcontroller, and then send it to the host for processing. 9. The external MS memory card interface adapter device as claimed in claim 8, wherein the second microcontroller can be made of a field programmable gate array or a composite programmable logic device. 10. The external MS memory card interface adapter device as claimed in claim 8, characterized in that, the universal serial bus connection interface and the universal serial bus interface can be more than one, wherein the universal serial bus The number of the bus connection interface is the same as that of the universal serial bus interface, and there is a one-to-one correspondence. 11. The external MS memory card interface conversion device as claimed in claim 8, wherein the host end can be a desktop computer or a notebook computer. 12. The external MS memory card interface adapter device as claimed in claim 8, wherein the data bus interface provided by the first micro-controller and the second micro-controller can be an integrated electronic drive interface or a dynamic random access memory interface. 13. The external MS memory card interface adapter device as claimed in claim 8, wherein the microprocessors provided by the first microcontroller and the second microcontroller can be further respectively connected with distinguishable The received signal is an auxiliary control circuit for data or instructions. 14. The external MS memory card interface adapter device according to claim 8, wherein the storage device can be a flash drive or a hard disk. 15. An external MS memory card interface adapter, the MS memory card interface adapter is provided with an MS memory card connection interface, and the MS memory card connection interface is connected with the first micro-controller and the second micro-controller in sequence A controller and a universal serial bus connection interface; it is characterized in that, The MS memory card connection interface can be electrically connected with the MS memory card connection interface set on the default host; The first microcontroller is provided with an MS memory card interface, and the MS memory card interface is sequentially connected to the first microprocessor and the first data bus interface; The second microcontroller is a programmable microcontroller, and is provided with the same second data bus interface as the first data bus interface of the first microcontroller, and the second data bus interface is connected with the second Microprocessor and USB OTG interface; The universal serial bus connection interface is connected to the USB OTG interface provided by the second microcontroller, and the universal serial bus connection interface can be connected to mobile electronic products. When the serial bus connection interface is connected to the universal serial bus connection interface provided by the MS memory card interface adapter device, the USB OTG interface will provide the driver program required by the mobile electronic product, so that the host end can The data in the memory of the mobile electronic product can be accessed through the MS memory card interface adapter device. 16. The external MS memory card interface adapter device as claimed in claim 15, wherein the second microcontroller can be made of a field programmable gate array or a composite programmable logic device. 17. The external MS memory card interface conversion device as claimed in claim 15, characterized in that, the universal serial bus connection interface and USB OTG interface can be more than one, wherein the universal serial bus connection interface and USB OTG interface The number of the USB OTG interfaces is the same and is one-to-one correspondence. 18. The external MS memory card interface conversion device as claimed in claim 15, wherein the host end can be a desktop computer or a notebook computer. 19. The external MS memory card interface adapter device as claimed in claim 15, wherein the data bus interface provided by the first micro-controller and the second micro-controller can be an integrated electronic drive interface or a dynamic random access memory interface. 20. The external MS memory card interface adapter device as claimed in claim 15, characterized in that, the microprocessors provided by the first microcontroller and the second microcontroller can be further respectively connected with distinguishable The received signal is an auxiliary control circuit for data or instructions. 21. The external MS memory card interface adapter device as claimed in claim 15, wherein the mobile electronic product can be a mobile phone or a digital camera.

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