KR100779747B1 - Secure Device combo card with RF communication function for a mobile terminal and method for RF communication of Secure Device combo card - Google Patents

Abstract

The present invention relates to an RF communication method of an SD combo card for a mobile terminal having an SD card slot and an SD combo card for a mobile terminal. The SD terminal combo card for a mobile terminal may include an SD interface for transmitting and receiving data with the SD terminal standard, an RF communication module for performing RF communication, an RF interface for transmitting and receiving data with the RF communication module, Memory and data stored through the SD interface when the SD communication is performed in the memory, and transfers the read data read through the RF communication module to the mobile terminal through the SD interface when performing the RF communication and the mobile And a controller for controlling the RF transmission by transferring the write data transmitted from the terminal to the RF communication module. As a result, RF communication can be performed through the SD combo card connected to the SD slot of the mobile terminal.

SD Card, RF Module

Description

Secure device combo card with RF communication function for a mobile terminal and method for RF communication of Secure Device combo card

1 is an internal block diagram of an SD combo card connected to a mobile terminal according to the present invention;

2 is a flowchart of a method of reading RF data of an SD combo card connected to a mobile terminal according to the present invention;

3 is a flowchart of a method of writing RF data of an SD combo card connected to a mobile terminal according to the present invention;

<Description of Symbols for Major Parts of Drawings>

 1: mobile terminal 3: SD slot

 5: Controller 10: SD Combo Card

20: SD card controller 21: Flash memory controller

22 flash memory 24 SD interface

26: memory controller 28: ROM

29: power management unit 36: RF interface

37: UART communication unit 40: RF communication module

41: RF data control unit 42: RF processing unit

43: antenna

The present invention relates to an SD card, and more particularly, to an SD combo card for a mobile terminal having an SD card slot and an RF communication method thereof.

In recent years, as the miniaturization technology of integrated circuits has developed, many high-performance small electronic devices have been developed and rapidly spread.

Examples of the small electronic device include a personal digital assistant (PDA), a mobile phone, a digital camera, a notebook personal computer, and the like.

In order to increase memory and expand functions, these small electronic devices are provided with slots for exchanging and mounting various card-type devices such as memory cards and input / output cards, such as PC card slots and SD (Secure Device) card slots. have.

Here, the PC card slot is a slot into which any PC card having a memory or IO (Input / Output) function conforming to the PC Card standard established according to the Personal Computer Memory Card International Association (PCMCIA) or the like can be mounted.

In addition, the SD card slot conforms to the SD card conforming to the SD standard or the SDIO standard, which is a storage device of a portable information terminal (for example, a digital camera). This slot accepts a Secure Device Input / Output (SDIO) card.

On the other hand, RFID (Radio Frequency IDentification), one of the main technologies in the ubiquitous environment, which has recently emerged as a new technology that will revolutionize our future life, is emerging as the subject of interest. Accordingly, the importance of RFID technology is recognized, and standardization work is being promoted along with technology development. RFID is similar to a barcode in terms of automatically identifying objects by radio type, but unlike barcodes, RFID is a function that reads or decrypts multiple tags at once even at a distance from an RFID reader. In addition, at present, a CF (Compact Flash) card type RFID reader is commercially available, but a SD (Secure Device) card type is more popularly used than a CF card type.

Accordingly, if the RFID function is added to the SD card, which is an interface standard widely used for various small electronic devices, it is possible to form a network by adding a communication function to the ubiquitous environment.

Accordingly, the present invention has been made to solve the above problems, the RF communication of the SD terminal combo card for the mobile terminal and the SD combo card for the mobile terminal added RF communication function to the SD combo card connected to the SD slot of the mobile terminal The purpose is to provide a method.

The present invention for achieving the above object, in the SD card combo card for a mobile terminal having an SD card slot, an SD interface for transmitting and receiving data in the SD interface standard and the mobile terminal, RF performing RF communication A communication module, an RF interface for transmitting and receiving data with the RF communication module, a memory, and storing data input through the SD interface when performing SD communication in the memory, and when performing RF communication, through the RF communication module. And a controller for transferring read data to the mobile terminal through the SD interface and transferring the write data transmitted from the mobile terminal to the RF communication module to control RF transmission.

The RF interface may include at least one of a GPIO communication unit performing parallel communication and a UART communication unit performing serial communication, so that the RF communication module may process data according to a wide range of RF signals received by the RF communication module. .

Preferably, the controller sets the RF interface to a reception mode upon receiving an RF read command from the mobile terminal, and sets the RF interface to a transmission mode upon receiving an RF write command.

The RF communication module preferably includes an antenna for transmitting and receiving an RF signal, an RF processor for RF processing data received through the antenna, and an RF data controller for controlling the RF processor and communicating with the RF interface.

The controller detects whether SD communication or RF communication is selected from the mobile terminal, performs SD communication when SD communication is selected, and performs RF communication through the RF communication module when RF communication is selected. It is preferable.

On the other hand, the above object, according to another aspect of the present invention, in the RF communication method of the SD combo card for a mobile terminal having an SD card slot, the SD controller of the SD combo card to the RF read command from the mobile terminal Sensing; The SD controller performing RF communication by an RF communication module to read data; It is also achieved by the SD controller of the SD combo card to pass the read RFID data to the mobile terminal through the SD card interface.

On the other hand, the above object, according to another aspect of the present invention, in the RF communication method of the SD combo card for a mobile terminal having an SD card slot, the SD controller of the SD combo card to the RF write command from the mobile terminal Sensing; Transferring write data to be recorded by the mobile terminal to the SD controller of the SD combo card through the SD interface; Transmitting, by the SD controller, the write data to an RF communication module; It is also achieved by the RF communication module includes the step of converting the write data into an RF signal and transmitting.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an internal block diagram of an SD combo card connected to an SD card slot of a mobile terminal according to the present invention.

Prior to describing the RF-communicable SD card of the present invention, the SD card slot of a mobile terminal is an SD card or SD compliant with the SD standard that is prevalent as a storage device of a portable information terminal (for example, a mobile phone or a digital camera). It is a slot that can install SDIO (Secure Device Input / Output) card in conformity with SDIO standard that enables the development of various input / output devices by expanding the standard. Therefore, in the present embodiment, since the SD card includes not only an SD card based on the SD standard but also an SDIO card based on the SDIO standard, the SD card will be referred to as an SD combo card hereinafter.

The mobile terminal stores the RF data read through the RF communication SD card in an internal memory or displays it on a display unit (not shown), and transmits the RF data through the RF communication SD card when data recording is required. It is assumed that it is provided. The mobile terminal of this embodiment is a concept including a personal digital assistant (PDA), a mobile phone, a digital camera, a notebook personal computer, and the like.

Accordingly, according to the present invention, an SD card capable of RF communication (hereinafter referred to as an "RF communication SD combo card") reads information from an RFID tag and displays it on a display unit of a mobile terminal provided with an SD card slot or on an internal storage device. The function of saving and, if necessary, the function of writing information to the tag in reverse.

As shown in FIG. 1, the RF communication SD combo card 10 having an RF communication function includes an SD card controller 20 and an RF communication module 40 for RF communication with the SD card controller 20.

The SD card controller 20 is a configuration of a normal SD card, and the SD interface 24 which communicates with the processor of the mobile terminal 1 via the SD slot 3 of the mobile terminal 1, and a flash storing data. A memory controller for controlling the memory 22, the flash memory controller 21, the ROM 28 in which the control program is stored, the RAM 27 having a buffer function, and the ROM 27 and the RAM 28. 26, an advanced high-performance bus (AHB) 25 that is a data transmission / reception bus, an Advanced Peripheral Bus (APB) 32, and an Advanced Peripheral Bridge (APB) (33) and a power management unit (29) connected to the peripheral peripheral bus (APB) (32) to supply power to each device through an advanced high-performance bus (AHB) (25). ) And a central processor unit (CPU) 35 that is a controller for controlling each of the above components. In addition, the SD combo card 10 further includes an RF communication module 40 and an RF interface for communicating with the RF communication module 40 to implement the present invention. Accordingly, the ROM 28 stores a control program for controlling the SD card read / write function and the RF communication function.

The RF interface includes a GPIO communication unit 36 and a UART (Universal Asynchronous Receiver Transmitter) communication unit 37. Having both the GPIO communication unit 36 and the UART communication unit 37 is for processing data according to the RF signal of a wide frequency received by the RF communication module 40.

Here, the GPIO communication unit 36 transmits and receives data according to the General Purpose Input / Output (GPIO) standard, and the UART communication unit 37 transmits and receives data serially through a TX / RX terminal.

The CPU 35, which performs the functions of the SD card controller and the RF communication module control function, receives or transmits RF data through the RF module according to the RF data read / write command of the mobile terminal 1. The CPU 35 sets the GPIO communication unit 36 in the reception mode when the RF data is received, and sets the GPIO communication unit 36 in the transmission mode when the RF data is transmitted. The CPU 35 detects whether SD communication or RF communication is selected from a key input unit (not shown) of the mobile terminal 1, performs SD communication when SD communication is selected, and selects RF communication. In this case, RF communication is performed through the RF communication module 40. The method of performing SD communication in the SD combo card 10 of the present invention is a well-known technique, and thus a detailed description thereof will be omitted.

The RF communication module 40 includes an antenna 43 for transmitting and receiving an RF signal, an RF processor 42 for RF processing data received through the antenna 43, and a GPIO communication unit 36 (or UART (Universal). Asynchronous Receiver Transmitter) is configured to communicate with the communication unit 37 and the RF data control unit 41 for controlling the RF processing unit 42. The RF communication module 40 reads the data of the RFID tag to the SD card controller 20 Transmit or transmit RF data transmitted from the RF interface.

Therefore, the SD combo card 10 reads the data of the RFID tag by performing RF communication through the RF communication module 40 at the time of reading the RFID tag, and writing data to the current RFID tag. In some cases, such as a prepaid transportation card, charges for bus charges may be deducted.

Hereinafter, a process of reading / writing RF data by connecting the RF communication SD combo card 10 to the mobile terminal 1 will be described.

2 is a flowchart of a method of reading RF data of the RF communication SD combo card 10 connected to the mobile terminal 1 according to the present invention. As shown in FIG. 2, in step S1, the SD combo card 10 having the RF communication function of the present invention is connected to the SD card slot 3 of the mobile terminal 1. When performing the RF data read function in step S2, the RF communication module 40 performs RF communication in step S3 to read the data of the RFID tag. In step S4, the SD controller 20 receives the data read through the RF interface or the UART communication unit 37. In step S5, the SD controller 20 transfers the read data to the mobile terminal 1 through the SD interface 24.

3 is a flowchart of a method of writing RF data of the RF communication SD combo card 10 connected to the mobile terminal 1 according to the present invention. In step S11, the SD combo card 10 having the RF communication function of the present invention is connected to the SD card slot 3 of the mobile terminal 1. When performing the RF data recording function in step S12, the RF communication SD combo card 10 in step S13 receives the data to be recorded transferred from the mobile terminal 1 through the SD interface. In step S14 and delivers to the RF communication module 40 via the RF interface or the UART communication unit 37. In step S15, the RF communication module 40 transmits RF data.

In this way, the mobile terminal 1 can communicate with the RFID tag to read the data recorded on the RFID tag or to record the data on the RFID tag.

By this configuration, an RFID reader function is provided in the SD combo card mounted in the SD slot of the mobile terminal 1, so that the SD combo card reads the necessary information from the RFID TAG and records the information in the RFID TAG if necessary. Will be able to. Accordingly, by adding an RFID reader function to an SD card, which is an interface standard widely used in various small electronic devices, it is possible to form a network by adding a communication function to a ubiquitous environment.

As described above, according to the present invention, it is possible to perform RF communication through the SD combo card connected to the SD slot of the mobile terminal.

Claims (9)

In the SD combo card for a mobile terminal having an SD card slot, An SD interface for transmitting and receiving data to and from the mobile terminal according to an SD interface standard; RF communication module for performing RF communication, An RF interface for transmitting and receiving data with the RF communication module; With memory, When the SD communication is performed, the data input through the SD interface is stored in the memory, and when the RF communication is performed, the read data read through the RF communication module is transferred to the mobile terminal through the SD interface and transmitted from the mobile terminal. And a controller for transmitting the written data to the RF communication module to control the RF transmission. The method of claim 1, The RF interface SD combo card for a mobile terminal, characterized in that it comprises at least one of the GPIO communication unit for performing parallel communication and the UART communication unit for performing serial communication. The method of claim 2, The RF communication module includes an antenna for transmitting and receiving an RF signal, an RF processor for RF processing data received through the antenna, and an RF data controller for controlling the RF processor and communicating with the RF interface. SD combo card for mobile terminal. The method of claim 3, The controller detects whether SD communication or RF communication is selected from the mobile terminal, performs SD communication when SD communication is selected, and performs RF communication through the RF communication module when RF communication is selected. SD combo card for mobile terminal, characterized in that. The method of claim 2, And the controller sets the RF interface to a reception mode upon receiving an RF read command from the mobile terminal, and sets the RF interface to a transmission mode upon receiving an RF write command. In the RF communication method of the SD combo card for a mobile terminal having an SD card slot, Detecting an RF read command from the mobile terminal by an SD controller of the SD combo card; The SD controller performing RF communication by an RF communication module to read data; And an SD controller of the SD combo card transferring the read RFID data to the mobile terminal through an SD card interface. The method of claim 6, The process of reading the RFID data, Setting an RF interface in which the SD controller performs parallel communication to a reception mode; RF communication method of the SD combo card for a mobile terminal comprising the step of receiving the RFID data from the RF communication module via the RF interface. In the RF communication method of the SD combo card for a mobile terminal having an SD card slot, Detecting an RF write command from the mobile terminal by the SD controller of the SD combo card; Transferring write data to be recorded by the mobile terminal to the SD controller of the SD combo card through the SD interface; Transmitting, by the SD controller, the write data to an RF communication module; And a step of the RF communication module converting the write data into an RF signal and transmitting the RF signal. The method of claim 8, The SD controller transfers the write data to the RF communication module, Setting an RF interface in which the SD controller performs serial communication to a transmission mode; RF communication method of the SD combo card for a mobile terminal, characterized in that it comprises the step of transmitting the write data to the RF communication module via the RF interface.

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