KR200396860Y1 - A dual interface memory card - Google Patents

Abstract

The present invention relates to a dual interface memory card, a connector of MMC (Multi Media Card) standard is installed on one edge of a kind of flash memory card, and a USB (Universal Serial Bus) 4-pin structure on the other edge. Install a universal serial bus connector, install a detachable piece on one side of the USB connector, and insert the removed piece by stacking it under the USB connector's edge and press-fit it. The part is made to match the specification of the USB connection port to the part to complete the memory card in which the memory card of the MMC and the USB standard is matched to the memory card.

Description

Dual interface memory card {A DUAL INTERFACE MEMORY CARD}

The present invention relates to a dual-interface memory card, which matches the connection terminal of a universal serial bus (USB) 4-pin structure to a flash memory card of a conventional MMC (Multi Media Card) standard. The two interface specifications can be read.

Flash memory has the characteristics of being able to preserve data after power off and having no need to drive a motor, which is fast becoming a favorite of electronics companies. In order to be able to carry the preserved data, many research developers have carefully implanted flash memory cards into information devices such as mobile phones, PDAs (digital portable data recorders), digital cameras, MP3 music players, etc. We use for dragon. This shows that flash memory cards are being widely and rapidly implanted into information devices.

However, the competition and division of interests of each vendor resulted in each vendor developing into a different standard flash memory card, for example, Compact-Flash card (Condition CF card), Secure-digital (Secure-Digital) card (abbreviated SD card), Memory-Stick card (abbreviated MS card), Smart-Media card (abbreviated SM card), XD picture card (abbreviated XD card) And multimedia cards (MMC cards) and the like are currently the specifications of memory cards on the market.

Memory card specifications are divided into appearance, thickness, width, depth (length) and connecting terminals. However, the quantity of the conventional memory card connection terminal PIN can be said to be quite complicated, and there is no commonality. For example, CF card is 50PIN, SD card is 9PIN, MS card is 10PIN, MMC card is 7PIN, SM card is 22PIN, and memory card of different connection standard can only read data with specific card reader. . Although there are currently card reader devices incorporating several functions into one, this type of card reader must accurately calculate the position of memory card connection terminals of various different standards to discriminate memory cards of different specifications. In addition, manufacturing costs and development improvements will also be limited.

Therefore, the present invention seeks to match a universally extensive USB connection interface in a conventional MMC memory card, and its purpose is to provide two types of connection interfaces in a kind of flash memory card.

The main purpose of the dual interface memory card of the present invention is to provide a memory card having a kind of dual interface by matching a USB 4-pin connection terminal therein with respect to a conventional MMC standard flash memory card.

The purpose of the dual-interface memory card of the present invention is to implant a structure using a universal serial bus, which is a conventional USB connection port, into a kind of MMC flash memory card, so that a new structure is not necessary.

The USB universal serial bus has the following features:

1. Excellent scalability allows dozens of peripherals to be connected in series.

2. Serialized USB devices all occupy only one set of identical system resources (IRQ, DMA, and I / O addresses).

3. USB 2.0 has high speed transfer rate of 480Mb / s.

4. The main unit can supply the power required by peripheral devices through USB interface.

5. Hot Swapping and PnP functions are supported.

Therefore, the present invention is improved by utilizing the prior art resources, and at the same time, it matches to read two connection interface specifications in one memory card, and already meets the utility model application requirements. Detailed descriptions and technical contents of the present invention will be described below with reference to the accompanying drawings.

(Example)

First, referring to FIGS. 1, 2, and 3 simultaneously, the memory card 1 of the present invention includes the connection terminal 12 of the MMC standard at the edge 1a of one end, and the other end of the edge. The connecting terminal 13 of the USB standard is installed in (1b), and one detachable piece 10 is installed next to the connecting terminal 13 of the USB standard of the edge (1b), and the detachable fragment 10 is It is an activity type that can be assembled and removed. When using the end of the connector 12 of the MMC standard, it is not necessary to remove the detachable piece 10. On the contrary, when using the end of the connection terminal 13 of the USB standard, the detachable piece 10 is replaced with a memory card ( After removing from 1), the upper end 102 of the detachable strip 10 removed again is inserted into the bottom portion 131 of the connector 13 of the USB standard, and the edge 1b of the connector 13 of the USB standard is inserted. Increase the thickness of the cable to ensure that the USB connection port meets the required thickness specifications.

Assembling and removing the detachable fragment 10 and the main body of the memory card 1 may be carried out on the side walls 101 and 101 'of the detachable fragment 10 on the L-shaped wall surfaces 11 and 11' which are notches 1c of the memory card 1. ) Is fitted so that the detachable piece 10 and the notch 1c of the memory card 1 are fitted together. In addition, when the upper end portion 102 of the detachable fragment 10 and the connection terminal 13 edge 1b of the USB standard also have a corresponding fitting member to be connected by USB, the upper end portion 102 of the detachable fragment 10 is The connection terminal 13 of the USB standard 13 and the bottom portion 131 are connected to each other, so as to match the thickness required by the USB connection port. One may be concave, the other may protrude, or one may be grooved, the other may be a tenon, or mutually arranged wedge-shaped grooves. It is possible to implement, the structure that can be assembled to the removable fragments 10 and the main body of the memory card 1 can be implemented in the form of a combination between the memory card 1 and the removable fragments 10 of the present invention.

4A and 4B, the figure is a three-dimensional and perspective view after assembling the removable fragments of the MMC flash memory card of the present invention, the thickness of the memory card (1) of the MMC standard that fits the card reader of the MMC standard ( A) is 1.4mm, and the thickness (A) does not meet the 2.2mm thickness required by the USB connection port, so the detachable fragment 10 is designed to be 0.8mm thick, and to be connected using a USB standard. At this time, first remove the detachable fragment 10 from the notch 1c of the memory card 1, and again insert the upper end 102 of the detachable fragment 10 into the bottom portion 131 of the connection terminal 13 of the USB standard. If the thickness of the removable chip 10 is 0.8 mm and the thickness of the memory card 1 of the MMC standard is 1.4 mm, the thickness B of the edge 1b of the connector 13 of the USB standard becomes 2.2 mm. It can be adapted to the thickness required by the connection port.

Finally, as shown in Fig. 5, when using the MMC standard memory card 1 of the present invention, one end of the edge (1a) as the connection terminal 12 of the MMC standard, the end of the main body (2) The card reader 21 of the MMC standard is inserted to allow data to be accessed. Also, if the memory card 1 of the present invention is connected to the connection port 22 of the USB standard, the detachable fragment 10 installed at the other end of the edge 1b is removed (as shown in Fig. 2). It is only necessary to insert the connection terminal 13 of the USB standard and insert the connection terminal 13 of the USB standard into the connection port 22 of the USB standard. The USB standard has the functions of supporting hot swapping and PnP, and the current information equipment is not only widely used with the USB standard connection interface but also has excellent general purpose. By matching the connection terminal 13 of the standard in one piece, by providing the MMC and USB dual connection interface standard in one flash memory card, the user can conveniently insert data to access the data card, The specific card reader is no longer subject to the constraints needed to solve the problem of limited reading and access specifications.

The above contents are only intended to describe preferred embodiments carried out in the present invention, and do not limit the scope of the present invention, and all of the present invention have been added in accordance with the equivalent changes or modifications based on the utility model application scope of the present invention. It is considered to be included in the utility model application scope.

According to the present invention, two types of connection interfaces can be provided to a flash memory card by matching a universally versatile USB interface with an MMC memory card.

1 is a three-dimensional assembly diagram of the present invention,

2 is a three-dimensional exploded view of the present invention,

3 is a plan combination view of the present invention,

Figure 4a is a stereoscopic view of the removable strip of the present invention indented and installed on the bottom of the connector of the USB standard,

Figure 4b is a side view of the removable strip of the present invention indented and installed on the bottom of the connector of the USB standard, and

5 is a schematic view of the use state of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: Memory card 1a, 1b: Edge

1c: notch 2: body

10: removable piece 11, 11 ': L-shaped wall surface

12: MMC standard connector 13: USB standard connector

21: card reader 22: connection port

101, 101 ': side wall 102: upper portion

131: bottom A, B: thickness

Claims (8)

MMC (Multi Media Card) A dual-interface memory card in which USB (Universal Serial Bus) 4-pin connector is installed at one edge of flash memory. Install detachable pieces on the side where USB connector is installed, A fitting member is installed on two sidewalls of the detachable piece to correspond to the fitting member of the L-shaped wall, which is the notch of the memory card body, so that the fitting member is fitted to each other. Separately installing a fitting member on the upper surface of the detachable piece to correspond to the fitting member of the bottom edge of the connection terminal of the USB standard, After removing the detachable piece, the removable piece is inserted into the bottom of the edge of the connector of the USB standard in order to satisfy the thickness of the USB connection port at the edge where the connector of the USB standard is installed. The dual interface memory card, characterized in that the USB standard is matched to the MMC standard memory card by inserting the terminal thickness into the USB connection port to access data. The method of claim 1, Dual interface memory card, characterized in that one of the haptic connection member is installed on the L-shaped wall surface and the side wall of the removable piece of the notch of the memory card body, one is protruding, the other is concave. The method of claim 1, And a fitting connection member installed at an L-shaped wall surface, which is a notch of the memory card main body, and a side wall of a removable fragment, one of which has a groove shape and the other of which has a tenon shape. The method of claim 1, And a fitting connection member installed on an L-shaped wall surface, which is a notch of the memory card body, and a side wall of a removable fragment, is installed by arranging a corresponding wedge-shaped block. The method of claim 1, The fitting member of the upper end of the removable strip and the bottom edge of the connector of the USB standard is installed in one protruding shape, the other concave shape. The method of claim 1, Dual interface memory card, characterized in that the fitting member of the upper end of the removable piece and the bottom of the connection terminal edge of the USB standard, one in the form of a groove, the other in the form of a book. The method of claim 1, The fitting member of the upper end portion of the removable strip and the bottom edge of the connection terminal of the USB standard is installed by arranging a corresponding wedge-shaped block. The method of claim 1, Dual interface memory card, characterized in that the width of the connection terminal edge of the USB standard of the memory card matches the standard of the USB connection port.