KR20090096997A - Communication terminal interface device with usim card socket - Google Patents

Abstract

A communications terminal interface device in which a smart card socket is mounted is provided to reduce manufacturing cost of the interface device by using the interface device for communication between the communication terminal and an external device. A dummy card(410) is connected to a smart card socket. A card socket(420) for test mounts a card(450) for test. A connector is connected to the external device. A PCB(Printed Circuit Board) comprises the circuit wiring for the transmission of the electric signal, the dummy card and the card Socket for test. The smart card socket is connected to an SIM(Subscriber ID Module) or USIM(Universal Subscriber ID Module) card.

Description

Communication terminal interface device with smart card socket {Communication terminal interface device with USIM card socket}

The present invention relates to an interface device, and more particularly, to an interface device and a communication terminal for communication between a communication terminal equipped with a smart card socket and an external device.

It is essential to test whether the communication terminal is operating normally at the manufacturing stage of the communication terminal. Due to advances in communication technology, these test processes are evolving.

The existing ICT (In-Circuit-Test) method of testing a communication terminal has occupied a unique position all over the world for a long time from mid 1970 to 1990. However, this ICT technology, coupled with the rapidly evolving telecommunications industry, has had many limitations in use for small packages that require increasingly high density / multilayer substrates, BGA, BGA, CSP, etc. To address this problem, the Joint Test Action Group (JTAG) was formed around Europe, and in 1990, the IEEE standardized the Boundary Scan design and finally IEEE Std 1149.1 was established.

In the digital / mobile industry that is leading the telecommunications industry, most devices have been developed with a boundary scan test structure from the design stage, and manufacturers have focused on enhancing productivity by adopting a boundary scan test method. have. In the future, using boundary scan technology to reduce production cost and lead time, realize high quality and secure competitiveness is an indispensable choice.

1 is a configuration diagram schematically showing an interface connection structure for connecting a communication terminal and an external device according to the prior art.

In the conventional communication terminal 100, a 20-pin connector is used to secure a mounting space, and a separate communication port is required to test the 20-pin connector with an external device that is not user. Conventionally, for this purpose, an interface 150 for connecting a communication terminal and an external device is manufactured by adding a printed circuit board. That is, the interface 150 is additionally manufactured for communication between the communication terminal 100 having a different connector type and an external device.

The interface 150 is manufactured integrally with the circuit board of the communication terminal 100 in the manufacturing step of the communication terminal and is cut after the communication terminal test.

When testing in this manner, there is a problem that an unnecessary process occurs in manufacturing a communication terminal because the interface for communication between the communication terminal and the external device must be manufactured separately.

In addition, since the interface device for communication between the communication terminal and the external device is cut after the test of the communication terminal, there is a problem of increasing the manufacturing cost of the communication terminal.

A smart card is an electronic card that can store a large amount of information by mounting an integrated circuit (IC) memory device. Examples of smart cards include SIM cards and SIM cards.

SIM Card (SIM Card) is a card that contains an integrated circuit (IC) chip that plugs into a phone and registers a phone number.It is a card that contains a phone number and a user ID of a communication terminal. It is used in the Global Mobile Communication System (GSM), which is a standard for digital cellular mobile communication systems in Europe.

Universal Subscriber Identity Module Card (USIM Card) is a smart card that is inserted into the 3rd generation mobile communication (WCDMA) terminal and allows various functions such as user authentication, global roaming, and e-commerce on a single card. It is designed to accommodate not only communication but also applications in other industries such as finance.

2 is a schematic view showing a smart card socket of a communication terminal according to the prior art.

2, the communication terminal is configured such that the main body 210 and the battery pack 220 are separated from each other. Here, the battery pack 220 may be detachably mounted on one side, for example, a rear side of the main body 210.

The smart card socket 230 is a portion in which the SIM card is mounted and electrically connected to the smart card socket 230. The smart card socket 230 is a portion for mounting the SIM card essential to the terminal of the third generation mobile communication (WCDMA).

The smart card socket 230 may include a substrate, a contact terminal pad, and the like. The contact terminal pads are arranged with terminals of C1 to C8 meeting the physical standards in the ISO 7816 standard. Terminals C1, C2, C3, C5, C6, and C7 are power supply terminals (Vcc), initialization input terminals (Reset), clock terminals (CLK), ground terminals (GND), program voltage terminals (Vpp), and serial data input and output. Terminal I / O, and terminals C4 and C8 are preliminary connection terminals RFU. Here, the program voltage terminal Vpp is not actually used.

Conventional smart card socket 230 has a problem that it can not communicate with other devices provided with only the contact terminal pad to communicate with the SIM card.

Accordingly, the present invention for solving the above problems is to propose an interface device for communication between a communication terminal and an external device.

In addition, the present invention proposes an interface device including a dummy SIM card electrically connected to a smart card socket of a communication terminal and a connector electrically connected to an external device.

Other objects of the present invention will be readily understood through the description of the following examples.

In order to achieve the above objects, according to an aspect of the present invention, there is provided an interface device for communication between a communication terminal equipped with a smart card socket and an external device.

In the interface device for communication between a communication terminal equipped with a smart card socket and an external device according to an embodiment of the present invention, the dummy coupled to the smart card socket and electrically connected to the smart card socket Card; A test card socket on which a test card is mounted; A connector for connecting with the external device; And a printed circuit board on which the dummy card, the test card socket and the connector are mounted, and a circuit wiring for transmitting an electrical signal is provided.

According to another aspect of the invention there is provided a communication terminal equipped with a smart card socket to communicate with an external device.

In a communication terminal equipped with a smart card socket according to an embodiment of the present invention and communicating with an external device, the smart card socket is a pad for electrically connecting with an interface device for communication between the communication terminal and the external device. There is provided a communication terminal further comprising a pad.

As described above, the present invention can reduce the cost of manufacturing the interface device since the interface device used for communication between the communication terminal and the external device can be used several times.

In addition, the present invention has the advantage that it is possible to reduce the unnecessary process in manufacturing the communication terminal because only once to manufacture the interface device used for communication between the communication terminal and the external device.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms first, second, A, B, etc. may be used to describe various components, but the components are not limited by the terms, but merely for distinguishing one component from other components. Only used as For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail an embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

The communication terminal according to the present embodiment is a PDC (Personal Digital Cellular) phone, PCS (Personal Communication Service) phone, PHS (Personal Handyphone System) phone, CDMA-2000 (1X, 3X) phone, WCDMA (Wideband CDMA) phone, dual Communication functions such as Dual Band / Dual Mode phone, Global Standard for Mobile (GSM) phone, Mobile Broadband System (MBS) phone, Digital Multimedia Broadcasting (DMB) phone, Smart phone, mobile phone, etc. Portable devices that may be included, public switched telephone network (PSTN) terminals, Voice over Internet Protocol (VoIP), Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP), Media Gateway Control (MEGACO), and Personal Digital Assistant (PDA) ), IMT-2000 (International Mobile Telecommunication--00), which provides hand-held PCs, notebook computers, laptop computers, WiBro terminals, and international roaming and extended mobile communications services. Terminal, Universal Mobile Telecommunication Service (UMTS) A portable electric and electronic device, which means all kinds of handheld-based wireless communication devices including a terminal based terminal, includes a code division multiplexing access (CDMA) module, a Bluetooth module, an infrared data module, In order to enable location tracking through a wired / wireless LAN card and a global positioning system (GPS), a predetermined communication module such as a wireless communication device equipped with a GPS chip may be provided, and a microprocessor capable of performing a multimedia playback function may be included. By doing so, it is interpreted as a general term for a terminal capable of performing a certain operation.

3 is a configuration diagram schematically showing a smart card socket of a communication terminal according to an embodiment of the present invention.

Referring to FIG. 3, the main body 210 and the battery pack 220 of the communication terminal are configured to be separated from each other. Here, the battery pack 220 may be detachably mounted on one side, for example, a rear side of the main body 210.

The smart card socket of the communication terminal according to an embodiment of the present invention may be divided into an area 310 and a pad area 320 to which an existing smart card is mounted and electrically connected. The pad area 320 refers to an area excluding an area where an existing smart card is mounted and electrically connected, and is an area in which a pad is additionally mounted.

The pad is for electrically connecting the interface device for communication between the communication terminal and the external device, and the number of pads may be variously changed.

Examples of smart cards include a SIM card and a SIM card. When the smart card is a SIM card, the smart card socket is a SIM card socket to which the SIM card is mounted. When the smart card is a SIM card, the smart card sort is It is apparent that the SIM card may be a SIM card socket to which the SIM card is mounted.

For example, for convenience of explanation and understanding, it is assumed that an external device is a test device for testing a communication terminal, and among them, is a JTAG device for performing software debugging (SW debugging) of the communication terminal. In addition, it is assumed that the smart card socket is a SIM card socket in which the SIM card is mounted.

JTAG devices can be connected with a 24-pin connector, and nine pads are required for 24-pin connector communication, which is apparent to those of ordinary skill in the communications arts.

Therefore, nine pads may be included in the pad area 320 for communication with the JTAG device. However, when the C1, the power supply terminal Vcc, and the C5, the ground terminal GND, are used among the contact terminal pads of the existing SIM card socket, seven pads may be included in the pad region 320.

In other words, nine pads are required to communicate with the JTAG device. Nine pads can be additionally attached to the pad area 320, and seven pads using C1 and C5 of the conventional SIM card socket Only pads may be additionally attached to pad area 320.

Of course, when the external device is connected to the connector other than the 24-pin connector, it is obvious that the number of pads additionally attached to the pad area 320 may be changed according to the type of connector.

4 is a schematic diagram of an interface device for communication between a communication terminal equipped with a smart card socket and an external device.

Referring to FIG. 4, the interface device may include a dummy card 410, a test card socket 420, a connector 430, a printed circuit board 440, and the like.

The dummy card 410 is a card for electrically connecting with the smart card socket of the communication terminal 100 and electrically connected to the smart card socket. The dummy card 410 has a shape of a smart card but does not perform the function of the smart card. It performs the function of sending and receiving electrical signals with.

Since the dummy card 410 is coupled to the smart card socket of the communication terminal 100, the dummy card 410 includes eight contact terminal electrodes to correspond 1: 1 with the eight contact terminal pads of the smart card socket. Accordingly, the pads attached to the pad area 320 of the smart card sockets of the communication terminal 100 must also correspond 1: 1. Therefore, it is obvious that the number of pads attached to the pad area 320 and the number of electrodes of the dummy card 410 should be the same.

For convenience of understanding and explanation of the invention, for example, it is assumed that the external device is a JTAG device.

As described above, the JTAG device can be connected to a 24-pin connector, and since nine pads are required for 24-pin connector communication, when nine pads are attached to the pad area 320 of the communication terminal 100, The electrode of the card 410 should also be nine. In addition, since only seven pads are attached to the pad region 320 of the communication terminal 100 when using C1 and C5 among the contact terminal pads of the existing smart card socket, the electrodes of the dummy card 410 may be seven. .

That is, the number of electrodes (parts electrically connected to the pads attached to the pad area 430 of the communication terminal 100) attached to the dummy card 410 may be variously changed according to what the external device is. However, the number of pads attached to the pad area 430 of the communication terminal 100 should be the same.

The test card socket 420 is equipped with a test card 450 to test whether the communication terminal 100 operates properly. The test card socket 420 may be a SIM card socket, and since the SIM card terminal for mounting the SIM card is mandatory in the third generation mobile communication (WCDMA) terminal, The third generation mobile communication (WCDMA) terminal should be tested for proper operation.

According to the prior art, the test was performed in a state where a test card is mounted in the smart card socket 230 of the communication terminal 100, but in the present invention, the dummy card 410 is mounted in the smart card socket, so that the test card is no longer used. There is no space for 450 to be mounted. Therefore, the interface device should include a test card socket 420 on which the test card 450 can be mounted.

The configuration of the test card socket 420 is the same as the existing smart card socket 230, it may be provided with eight contact terminal pads.

The connector 430 is electrically connected to an external device.

The connector 430 allows communication between the communication terminal 100 and the external device when the connector method between the communication terminal 100 and the external device is different.

The type of the connector 430 may be changed according to a communication method of an external device. When the external device is a JTAG device, the JTAG device uses a 24-pin connector, so the connector 430 may be a 24-pin connector.

Printed Circuit Board (PCB) 440 is a circuit wiring for the transmission of electrical signals mounted with each component of the interface device, the dummy card 410, the test card socket 420 and the connector 430 Is formed.

The printed circuit board 440 may be configured as a flexible printed circuit board (FPCB) to bend flexibly, and only the portion where the dummy card 410 and the test card socket 420 are connected is flexible. It can be composed of a circuit board.

The configuration of the printed circuit board 440 as the flexible printed circuit board may allow the interface device to bend when the dummy card 410 is mounted in the smart card socket of the communication terminal 100 according to the present invention. This is to make the connection 430 easier.

5 is a configuration diagram schematically showing a configuration in which an interface device is coupled to a smart card socket of a communication terminal according to the present invention.

Referring to FIG. 5, the dummy card 410 of the interface device is mounted in the smart card socket of the communication terminal 100. The smart card socket is divided into eight contact terminal pads 310 and a pad area 320 for communicating with an external device, and the dummy card 410 is electrically connected to the smart card socket.

The test card 450 is mounted to the test card socket 420 for the test of the communication terminal 100, and although not shown in FIG. 5, the connector 430 is electrically connected to an external device.

For example, when the external device is a JTAG device, the communication terminal 100 and the JTAG device are connected through an interface device to perform software debugging of the communication terminal 100.

When performing a test operation of the communication terminal 100 using the interface device according to the present invention, since the interface device is not cut off after the test, there is an advantage of reducing the manufacturing cost of the communication terminal, and when manufacturing the communication terminal Since there is no need to manufacture an interface device that communicates with an external device to be additionally manufactured each time, there is an advantage that unnecessary processes can be reduced.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art that various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below And can be changed.

1 is a configuration diagram schematically showing an interface connection structure for connecting a communication terminal and an external device according to the prior art.

Figure 2 is a schematic diagram showing a smart card socket of a communication terminal according to the prior art.

Figure 3 is a schematic diagram showing a smart card socket of a communication terminal according to an embodiment of the present invention.

4 is a schematic diagram of an interface device for communication between a communication terminal equipped with a smart card socket and an external device;

5 is a configuration diagram schematically showing a configuration in which an interface device is coupled to a smart card socket of a communication terminal according to the present invention.

Claims (15)

In the interface device for communication between a communication terminal equipped with a smart card socket and an external device, A dummy card coupled to the smart card socket and electrically connected to the smart card socket; A test card socket on which a test card is mounted; A connector for connecting with the external device; And And a printed circuit board on which the dummy card, the test card socket and the connector are mounted, and a circuit wiring for transmitting an electrical signal is formed. The method of claim 1, The smart card socket, Sim card (SIM: Subscriber Identity Module) card is coupled to the SIM card socket and electrically connected to one of the SIM card (USIM: Universal Subscriber Identity Module) card is coupled to the one of the smart card socket and electrically connected to the SIM card Interface device characterized in that. The method of claim 1, The external device, And an external device for testing the communication terminal. The method of claim 3, The external device, Interface device, characterized in that the JTAG (Joint Test Access Group) device for performing software debugging (debugging) of the communication terminal. The method of claim 1, The connector, An interface device comprising 24 pins for connecting to the external device. The method of claim 1, The printed circuit board is an interface device, characterized in that the flexible printed circuit board (Flexible Printed Circuit Board). The method of claim 1, The dummy card and the test card socket is connected by a flexible printed circuit board (Flexible Print Circuit Board). The method of claim 1, The dummy card is, Including electrodes for 24-pin communication, And the electrode is electrically connected to a pad included in the smart card socket. The method of claim 8, And the electrode is seven. In a communication terminal equipped with a smart card socket to communicate with an external device, The smart card socket, And a pad for electrically connecting an interface device for communication between the communication terminal and the external device. The method of claim 10, The smart card socket, Sim card (SIM: Subscriber Identity Module) card is coupled to the SIM card socket and electrically connected to one of the SIM card (USIM: Universal Subscriber Identity Module) card is coupled to the one of the smart card socket and electrically connected to the SIM card Communication terminal characterized in that the. The method of claim 10, The external device, And a JTAG (Joint Test Access Group) device for performing software debugging of the communication terminal. The method of claim 10, The pad, And an electrical connection with a dummy card mounted on the interface device. The method of claim 10, The pad, And a pad area, except for an area electrically connected to a dummy card coupled to the smart card socket, of the area of the smart card socket. The method of claim 10, The pad, 7 communication terminals.

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