CN100365538C - USB memory card - Google Patents

Abstract

The present invention discloses a USB interface storage card, which makes the USB interface unit flat so as to greatly reduce the volume of the USB interface unit, so that the USB interface storage card is lighter and thinner, and the flat interface unit allows the USB storage card to be completely placed in a slot of an electronic device, without the concern that the common USB interface storage device protrudes outside the electronic device and is prone to collision.

Description

USB memory card

technical field

The invention relates to a portable data storage device, in particular to a USB interface storage card.

Background technique

Records are an important key to the transmission of human culture. From the ancient days of making notes and writing books, with the vigorous development of electronic information technology, data records have entered digital storage, carrying, and playback. Therefore, for the sake of More convenient and in line with human record use, portable storage devices are born to meet this demand.

The USB interface storage device is the most popular choice for portable storage devices today. It has the advantages of small size, repeatable reading and writing, significantly larger capacity than conventional disks, and plug-and-play. Please refer to Figure 1, which is a general market According to the structure design of the common USB interface storage device in the world, the USB interface storage device 10 has a USB plug 12 which can be plugged into the USB socket of the computer to read the stored data.

However, when the USB interface storage device 10 is plugged into a portable electronic device such as a notebook computer, the flash drive will protrude from the portable electronic device, which not only causes the portable electronic device that emphasizes the overall design It is visually indecent, and the flash drive protruding from the portable electronic device will cause the portable electronic device to collide when it is moved, resulting in great inconvenience.

Therefore, the present invention aims at the above problems and provides a USB interface storage card to solve the above problems.

Contents of the invention

The main purpose of the present invention is to provide a USB interface storage card, which can make the portable electronic device that needs to use the storage medium more convenient when moving, and does not easily cause problems due to the USB interface storage device protruding from the electronic device. collision concerns.

Another object of the present invention is to provide a USB interface memory card, which can effectively reduce the cost of producing the USB interface unit and has a fool-proof function.

Another object of the present invention is to provide a USB interface storage card, which can greatly reduce the volume of current USB interface storage devices and increase the portability of the USB interface storage devices.

Another object of the present invention is to provide a USB interface storage card, which has no direction restriction when inserted into an electronic device, thereby providing a more user-friendly and convenient storage device.

For reaching above object, the present invention provides a kind of USB interface storage card, described USB interface storage card comprises the card type housing that has several openings with the same position and shape on a peripheral edge; A circuit board located in the card type housing , there are several planar USB interface units on the circuit board for connecting with an electronic device, and the planar USB interface units are exposed from the opening; a memory unit on the circuit board; and a microcontroller, which controls the memory Reading and writing of the unit, so that data can be written into the memory unit by the electronic device, or read from the memory unit to the electronic device. The USB interface unit is directly arranged on the circuit board.

The electronic device is a portable electronic device.

The electronic device is a digital camera.

The electronic device is a computer device.

The electronic device is a notebook computer device.

The microcontroller includes a USB/OTG serial interface engine that converts the data of the microcontroller into electrical signals.

The card type housing has a switch for setting anti-write protection.

The memory unit is composed of non-volatile memory.

The memory unit is composed of flash memory.

The card type housing has several positioning slots.

Several pins of each planar USB interface unit are arranged side by side.

The USB interface storage card may also include a USB/OTG serial interface engine that converts the data of the microcontroller into electrical signals.

The USB interface storage card of the present invention can make the portable electronic device that needs to use the storage medium more convenient when moving, and there is no fear of easy collision due to the USB interface storage device protruding from the electronic device. . At the same time, the cost of producing the USB interface unit can be effectively reduced, and it has the function of fool-proofing. The fool-proofing is to prevent mis-insertion in the wrong direction and prevent positioning in the slot. And described a kind of USB interface memory card can reduce the volume of present USB interface memory device product greatly, increase the portability of USB interface memory device. The USB interface storage card has no direction restriction when it is inserted into the electronic device, thereby providing a more humanized and convenient storage device.

Description of drawings

FIG. 1 is a schematic diagram of a public USB interface storage device;

Fig. 2 is the appearance schematic diagram of USB interface storage card of the present invention;

Fig. 3 is the side view of USB interface storage card of the present invention;

Fig. 4 is the bottom view of USB interface memory card of the present invention;

Fig. 5 is the functional block diagram of USB interface memory card of the present invention;

6 is a schematic diagram of an embodiment of the present invention embedded in an electronic device;

Fig. 7 is a bottom view of another embodiment of the present invention.

Description of figure number:

10 storage device 12 USB plug

20USB interface storage card 22 card type shell

24 switches 26 openings

28 positioning card slots 30 circuit boards

32 USB interface unit 34 memory unit

36 microcontroller 38 electronic device

40USB/O TG serial interface engine 42 slots

44 circuit board 46 conductive shrapnel

48USB interface unit 50 openings

Detailed ways

In order to describe the present invention in more detail, it will be described in detail with the following examples and accompanying drawings.

The present invention relates to a USB interface storage card, in particular to an electronic device that can be applied to any electronic device that needs a storage medium, such as a personal computer, a digital video recording device, a digital mobile device, and the like.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 together, which are the overall appearance view, side view and bottom view of the USB interface memory card of the present invention in sequence. The USB interface storage card 20 of the present invention includes a card-type housing 22; the card-type housing 22 has a switch 24 for setting the anti-write protection, moreover, the switch 24 can be a hidden design , that is, the switch does not protrude outside the card-type housing 22; the bottom of the card-type housing 22 has an opening 26; A circuit board 30 (as shown in FIG. 3 ), on which the circuit board 30 adopts a direct layout to form a planar USB interface unit 32 for connecting with an electronic device, and the planar USB interface unit 32 passes through the opening 26 It is revealed that the direct layout method can effectively save the production cost of the conventional USB interface unit.

The appearance of the planar USB interface unit 32 of the present invention is shown in FIG. 4 , presenting five concentric circles, which are GND, D+, D-, VBUS and ID contacts in sequence from outside to inside. The electronic device can be a portable electronic device, a digital camera, a computer device or a notebook computer device and any other product that requires a storage device.

Please refer to shown in Figure 5, a memory unit 34 is integrated on the circuit board 30, and the memory unit 34 can be a non-volatile memory or a flash memory; a microcontroller 36 for controlling the reading and writing of the memory unit , so that data can be written into the memory unit 34 by the electronic device 38, or read data from the memory unit 34 to the electronic device 38 and a USB for converting the data of the microcontroller into electrical signals /OTG serial interface engine 40 , the USB/OTG serial interface engine 40 can also be integrated in the microcontroller 36 .

Please refer to FIG. 6, which is a schematic diagram of an embodiment of the present invention 20 embedded in an electronic device 38. At this time, because the present invention adopts the direct layout of the USB interface unit 32 on the circuit board 30 to form a planar USB interface unit 32, Therefore, when using the USB interface storage card 20 of the present invention to store data, it can be completely inserted into a slot 42 of a corresponding specification in the electronic device 38 for data access, without protruding from the conventional USB interface storage device. The absence of the outside of the electronic device, so the electronic device of the present invention will have a more free movement without protruding from the outside of the electronic device and causing collisions or affecting the overall design of the electronic device. What's more, because of the USB interface of the present invention The unit 32 has no direction restriction, so the user can put the present invention into the electronic device 38 in any direction without limitation for data access, and the design of contacts in all four directions will effectively extend the life of the present invention. service life.

On the electronic device 38 , access to memory or data in the electronic device can be performed through a plurality of conductive shrapnel 46 disposed on the circuit board 44 corresponding to the planar USB interface unit 32 . Please refer to Fig. 7, another embodiment of the USB interface storage card of the present invention, the main difference between this embodiment and the previously described embodiment is that the aforementioned planar USB interface unit presenting five concentric circles is changed into a card-type There are golden finger-type planar USB interface units 48 on the periphery of the housing 22, and the opening 26 originally used to expose five concentric planar USB interface units is used to expose the golden finger-type USB interface unit 48. And it is revised as the openings 50 arranged around the periphery of the card-type housing 22 as shown in the figure. The golden finger USB interface unit 48 is GND, D+, D-, ID, VBUS in sequence.

To sum up, the present invention is a USB interface storage card, the USB interface unit of which is formed by direct layout on the circuit board, so that it can effectively avoid the commonly used USB interface unit that cannot be placed inside the electronic device because the USB interface unit is too large. Shortcomings, and this USB interface unit formation method can effectively save the cost of the manufacturing process, and greatly reduce the volume of the USB interface memory card, increase its portability and life, and make portable electronic products use the USB interface memory card , can maintain its good mobility characteristics.

The above descriptions are only preferred embodiments of the present invention, so all equal changes and modifications made according to the shape, structure, characteristics and spirit described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention .

Claims (13)

1. a USB interface stores card, it is characterized in that, includes:

One card form housing, described card form housing bottom periphery has the identical opening of several position shapes;

One circuit board, it is positioned at described card form housing, is formed with the plane formula usb interface unit that several are connected with an electronic installation on the described circuit board, and described plane formula usb interface unit manifests from this opening;

One mnemon, it is positioned on the described circuit board; And

One microcontroller, it controls the read-write of described mnemon, so that data can write described mnemon by described electronic installation, or reads data to described electronic installation by described mnemon.

2. USB interface according to claim 1 stores card, it is characterized in that described usb interface unit directly is in the layout of on this circuit board.

3. USB interface according to claim 1 stores card, it is characterized in that described electronic installation is a portable electronic devices.

4. USB interface according to claim 1 stores card, it is characterized in that described electronic installation is a digital camera.

5. USB interface according to claim 1 stores card, it is characterized in that described electronic installation is a computer installation.

6. USB interface according to claim 1 stores card, it is characterized in that described electronic installation is a mobile computer device.

7. USB interface according to claim 1 stores card, it is characterized in that, includes the USB/OTG serial interfaces engine that a data with described microcontroller transfers electrical signal in the described microcontroller.

8. USB interface according to claim 1 stores card, it is characterized in that, has a switch that is used to set Write-protection prevention on the described card form housing.

9. USB interface according to claim 1 stores card, it is characterized in that described mnemon is made of non-voltile memory.

10. USB interface according to claim 1 stores card, it is characterized in that described mnemon is made of fast flash memory bank.

11. USB interface according to claim 1 stores card, it is characterized in that, several pins of described each plane formula usb interface unit are and are arranged side by side.

12. USB interface according to claim 1 stores card, it is characterized in that having several locating grooves on the described card form housing.

13. USB interface according to claim 1 stores card, it is characterized in that, also can include the USB/OTG serial interfaces engine that a data with described microcontroller transfers electrical signal to.

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