CN201066375Y - Test fixture for card reading interface - Google Patents

Abstract

The utility model provides a test fixture of card reading interface is applied to the card reading interface including multiple memory card interface and is integrated these memory card interfaces in a memory card slot. The test fixture is electrically connected to the memory card slot, and the test fixture comprises: the storage card, the switching unit, the connecting part and the connecting circuit; the switching unit is connected with the notebook computer and receives a switching instruction sent by the notebook computer; the switching unit selects the corresponding memory card according to the received switching instruction; the connecting part is connected between the memory card slot and the switching unit; the connecting circuit is connected between the switching unit and the memory card and transmits the detection data to the notebook computer. The notebook computer detects the detection data before and after access, and not only judges whether the memory card slot operates normally, but also reduces the plugging of the memory card slot.

Description

Test fixture for card reader interface

technical field

The utility model relates to a test fixture for a card-reading interface and a testing method thereof, in particular to a test fixture for testing a card-reading interface with multiple memory card interfaces.

Background technique

With the diversification of types of memory cards, users need to purchase corresponding card reading interfaces for accessing data in the memory cards. For example, if the user uses a CF memory card, he needs to purchase a CF card reader interface separately. If the user wants to access the data of the SD memory card, an SD card reader interface is purchased separately, so a memory card of one specification needs its corresponding card reader interface, which causes a lot of inconvenience to the user. In order to solve the problem of multiple card-reading interfaces, some manufacturers integrate card-reading interfaces of various specifications into one body. In this all-in-one card reading interface, various memory card interfaces are arranged in the same memory card slot, and the memory card slots are sequentially arranged in the memory card slot through different memory card shapes.

Please refer to FIG. 1 , which is a schematic diagram of connection between a memory card slot with multiple memory card interfaces and memory cards. The user only needs to find the corresponding memory card position in the memory card slot to use it. In this way, in addition to integrating multiple memory cards into one card reading interface, the volume of the card reading interface can also be saved. In order to expand the connection function of the notebook computer, the above-mentioned all-in-one card reader interface is initially provided on many notebook computers. The user does not need to carry the card reading interface additionally when going out so as to reduce the burden on the user.

The manufacturer usually uses the following steps to test the multi-in-one card reader interface, please refer to FIG. 2: select a memory card (see step S210). Insert the selected memory card into its corresponding memory card slot (see step S220). The notebook computer provides a test signal to the memory card (see step S230). The notebook computer detects the pre-sent and received test signals (see step S240). If there is no error after the comparison, repeat step S210 until all the memory cards are detected. Such a test method needs to be replaced. Taking N-in-one card reader interface as an example, it needs to perform N times of plugging and testing. For the card reading interface and the memory card used for testing, the action of plugging and unplugging will more or less cause damage to the device. Especially for the memory card, because it is necessary to test multiple notebook computers, it is more likely to be inserted and pulled out more often, which makes the manufacturer need to purchase a new batch of memory cards frequently. This will increase the test cost for the manufacturer.

Utility model content

In view of the above problems, the main purpose of the present invention is to provide a test fixture for a card reader interface, which is used to connect to a card reader interface in a notebook computer. The card reading interface is provided with a memory card slot, and there are memory card interfaces of various specifications in the memory card slot.

In order to achieve the above purpose, the utility model discloses a test fixture for a card reading interface. The memory card slot includes at least one memory card interface, and the test fixture is electrically connected to the memory card slot. The test fixture includes: A card, a switching unit, a connecting part, and a connecting circuit.

According to an embodiment of the present invention, the above-mentioned utilization test fixture provides various memory cards; a switching unit is electrically connected to the notebook computer, and the switching unit inputs a switching command sent from the notebook computer, and outputs a switching command for Select the corresponding signal of the memory card; a connection part, electrically connected between the memory card slot and the switching unit; and a connection circuit, electrically connected between the switching unit and the memory card, the connection The circuit outputs detection data to the memory card, and the detection data is output to the notebook computer through the memory card slot, and the notebook computer outputs a signal for judging whether the memory card slot is in normal operation.

In the test fixture for the above-mentioned card reading interface, preferably, the memory card slot at least includes a CF interface, an SD interface, an MS interface, an SM interface, an XD interface, an MSP interface or an MMC interface.

The test fixture of the above-mentioned card reading interface, wherein preferably, the memory card is a CF memory card, an SD memory card, an MS memory card, an SM memory card, an XD memory card, an MSP memory card or an MMC memory card Card.

The test fixture for the above-mentioned card reading interface, wherein preferably, the notebook computer sends a serial peripheral device for triggering a chip selection pin in a memory card to be selected as a memory card for testing to the switching unit The interface command acts as a switching instruction.

The utility model provides a test fixture for a card-reading interface, which is used for connecting a card-reading interface slot with multi-standard memory card interfaces, which can reduce the number of times of inserting and pulling out the card-reading interface slot. And send a switching command through the notebook computer, so as to select the memory card interface to be tested.

Description of drawings

FIG. 1 is a schematic diagram of the connection between a memory card slot with multiple memory card interfaces and memory cards.

Fig. 2 is a flow chart of prior art testing.

Fig. 3 is a schematic diagram of the connection between the utility model and a notebook computer.

Fig. 4 is the test flowchart utilizing the utility model.

Fig. 5 is a schematic diagram of the connection of the memory card in the present invention.

Wherein, the reference signs are explained as follows:

110～card reading interface 111～memory card slot 300～test device

310～connection part 320～memory card 330～switching unit

340～connection circuit

Detailed ways

Relevant feature and implementation of the present utility model, in conjunction with accompanying drawing, the preferred embodiment is described in detail as follows:

The utility model provides a test fixture 300 for a card reading interface 110 . The notebook computer provides a memory card slot, which can be but not limited to CF (Compact Flash Card, CompactFlash) interface, SD (Secure Digital, Secure Digital) interface, MS (Memory Stick, Memory Stick) interface, Memory card with SM (Smart Media) interface, XD (Extension Card) interface, MSP interface (Memory Stick Pro) or MMC (Multimedia Card) interface. The test fixture 300 includes: a connection part 310 , a memory card 320 , a switch unit 330 and a connection circuit 340 .

Please refer to FIG. 3 , which is a schematic diagram of the connection between the utility model and a notebook computer. A variety of memory cards 320 with different specifications are arranged in the test fixture 300 and integrated on a circuit board. The connecting portion 310 is used for electrically connecting between the memory card slot 111 and the switching unit 330 . In order to reduce the insertion and removal of the memory card slot 111 , the appearance of the connecting portion 310 is designed to match the memory card slot 111 and correspond to the memory card interface in the memory card slot 111 . Therefore, the test fixture 300 also includes memory cards 320 with various specifications and interfaces, for example, CF memory card, SD memory card, MS memory card, SM memory card, XD memory card, MSP memory card (Memory Stick Pro Card) or MMC memory card. When the connecting portion 310 is placed in the memory card slot 111 , the test fixture 300 is electrically connected to the memory card interface in the memory card slot 111 .

The switching unit 330 is electrically connected to the notebook computer, and the switching unit 330 is used for receiving a switching instruction sent by the notebook computer. The switching unit 330 outputs a signal for selecting the corresponding memory card 320 according to the received switching instruction. The switching command is a Serial Peripheral Interface (SPI) command. The serial peripheral interface is a synchronous serial data protocol for microprocessors and interface devices. The serial peripheral interface is used to provide high-bandwidth network connections between the CPU and peripheral components.

The connection circuit 340 is electrically connected between the switching unit 330 and the memory card 320, the connection circuit 340 is used to transmit the detection data to the memory card 320, and output to the notebook computer through the memory card slot 111, so that the notebook computer is used to detect the data before accessing. The detected data and the accessed detected data are used to output a signal for judging whether the memory card slot 111 is operating normally. The notebook computer sends the SPI command to trigger the chip select pin in the memory card 320 .

The operation process of the test fixture of the present invention, the test method includes the following steps, please also refer to FIG. 4 : integrate multiple memory cards into one test fixture (see step S410). Electrically connect the test fixture to the memory card interface in the memory card slot (see step S420). Select a memory card to be tested from the plurality of memory cards, and make the selected memory card establish a communication relationship with the corresponding memory card interface in the memory card slot through the test fixture (see step S430). Send a test data to the selected memory card, then read the sent test data from the selected memory card, and compare the sent test data with the read data to determine the corresponding memory card slot. Whether an error occurs in the memory card interface (see step S440). And repeat step S430 to select other memory cards until all memory card interfaces are tested.

In order to explain the detailed operation process of the utility model more clearly, three kinds of memory cards SD, Mini SD and MMC are used as the process introduction of the utility model below. This method is used for switching. Please refer to FIG. 5 , which is a schematic diagram of connection of the memory card in the present invention.

Assuming that the SD card is the first memory card to be tested and the SD chip selection pin is active when it is at a low potential, and it is a disable instruction for the selected memory card 320 when it is at a high potential. When the test fixture 300 is inserted into the card reader interface 110, the test fixture 300 will receive the switch command sent by the notebook computer, so as to trigger the chip selection pin in the SD card (lower the potential to make it effective), so that the SD card will be activated. This type of memory card 320 for testing is selected. Therefore, after the SD card test is completed, the notebook computer sends a switching command again, and pulls up the potential of the chip selection pin of the SD card to disable the SD card. Then, after the switch unit 330 in the test fixture 300 detects this change, the test fixture 300 switches the SD card to the SPI mode. At the same time, the notebook computer and the SD card remain in the SPI communication mode. The notebook computer selects the memory card 320 to be tested in the next round and repeats the above steps of switching, testing, communication and selection until all the memory cards 320 are tested.

The utility model provides a test fixture 300 for the card reading interface 110, which is used for connecting the card reading interface slots with multi-standard memory card interfaces, and can reduce the number of times of inserting and pulling out the card reading interface slots. And send a switching command through the notebook computer, so as to select the memory card interface to be tested.

Although the present invention is disclosed above with the above-mentioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and changes without departing from the spirit and scope of the present invention. Retouching, so the patent protection scope of the utility model shall be subject to the scope defined by the appended claims of this specification.

Claims (4)

1. the measurement jig of a card reading interface, being applied to one comprises the card reading interface of multiple memory card interface and described memory card interface is integrated in the storage card slot of this card reading interface, this card reading interface is electrically connected on a notebook, it is characterized in that, comprises in this measurement jig:

Multiple storage card;

One switches the unit, is electrically connected on this notebook, and this switch unit input is from the switching instruction that this notebook sent, and output is in order to select the signal of corresponding described storage card;

A junction is electrically connected between this storage card slot and this switch unit; And

One connecting circuit, be electrically connected between this switch unit and the described storage card, this connecting circuit is to described storage card output test data, and described detection data export this notebook to by described storage card slot, and the output of this notebook is in order to judge the whether signal of normal operation of this storage card slot.

2. the measurement jig of card reading interface as claimed in claim 1 is characterized in that, this storage card slot comprises a CF interface, a SD interface, a MS interface, a SM interface, an XD interface, MSP interface or a MMC interface at least.

3. the measurement jig of card reading interface as claimed in claim 1 is characterized in that, this storage card is a Compact Flash, a SD storage card, a MS storage card, a SM storage card, an XD storage card, MSP storage card or a MMC storage card.

4. the measurement jig of card reading interface as claimed in claim 1, it is characterized in that this notebook sends in order to a chip that triggers in a kind of storage card to this switch unit selects the pin position to make its selected conduct detection use the Serial Peripheral Interface (SPI) order of storage card as switching command.

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