JP2014056377A - Electronic apparatus and the control device thereof, control method, and portable communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an electronic apparatus through/from which a SIM card can be inserted and extracted to properly re-read information in the SIM card when the SIM card is inserted.SOLUTION: An electronic apparatus 100 includes an interface part 170 and a control device 300. The interface part can have a SIM card 200 storing information about a user inserted thereinto. The control device supplies power supply voltage to the SIM card inserted into the interface part, and the SIM card reads the information about the user stored in the SIM card in response to the insertion of the SIM card into the interface part.

Description

  The present invention relates to an electronic device, a control device therefor, a control method, and a mobile communication terminal, and more particularly to control when a storage medium is inserted into an electronic device in which the storage medium can be inserted and removed.

  In a mobile communication terminal such as a mobile phone, a user or communication terminal is identified using an IC card called a SIM (Subscriber Identity Module Card) card that can be inserted and removed, in which identification (ID) information unique to the terminal is stored Technology may be used. In recent years, with the increase in speed and diversification of mobile communication terminal services, an external storage medium such as an IC card may be used to record applications and user information.

  Such an IC card is a contact type IC card, and when reading data from the IC card and writing data to the IC card, it is necessary to supply power to the IC card. If the IC card is inserted / removed during data input / output while the power is supplied to the IC card, the data stored in the IC card may be damaged. For this reason, in a conventional mobile communication terminal, there is a case where an interface unit for inserting an IC card is provided at a place where the battery cannot be inserted / removed unless a battery for supplying power to the control circuit of the terminal is removed.

  Japanese Patent Laid-Open No. 2002-319892 (Patent Document 1) discloses that in a mobile communication terminal to which an IC card can be connected, the power to the IC card is cut off by detecting the start of extraction of the IC card, In the case of a SIM card, a configuration is disclosed in which connection and disconnection to a network are switched according to the insertion and removal of the SIM card. With such a configuration, the IC card can be exchanged safely and easily with the terminal powered on, and the use / non-use of the communication function can be automatically switched.

JP 2002-319892 A

  In recent years, mobile communication terminals are sometimes provided with functions such as fee settlement and commuter passes. In such a terminal, in addition to terminal ID information and user information, highly confidential information such as billing information is stored in, for example, a SIM card. Such a function may be required to operate even when the main power of the terminal is off. In this case, it is necessary to supply power to the SIM card even if the main power of the mobile communication terminal is turned off.

  On the other hand, specific information such as user information stored in the SIM card is read from the SIM card at the time of system startup, that is, in response to the main power being switched on and the power supply to the SIM card being started. Stored in a storage device such as a memory, and an application may operate based on the stored information. However, when power is supplied to the SIM card even when the main power is off as described above, the power supply to the SIM card continues even if the SIM card is removed and reinserted. Therefore, the user information stored in the SIM card may not be reread (reloaded). In an application that uses the user information or the like, there is a possibility that the user and terminal cannot be properly identified and set.

  In particular, in a device of a type in which a battery that is a power supply device cannot be attached or detached, information stored in the SIM card cannot easily be reloaded.

  The present invention has been made in order to solve such problems, and an object of the present invention is to store information in an IC card when an IC card is inserted in an electronic device in which a storage medium (IC card) can be inserted and removed. Rereading appropriately.

  An electronic apparatus according to the present invention includes an interface unit and a control device. The interface unit can insert a storage medium in which information about the user is stored. The control device supplies power supply voltage to the storage medium inserted in the interface unit, and reads information about the user from the storage medium via the interface unit in response to the storage medium being inserted into the interface unit. Configured.

  Preferably, the control device supplies a power supply voltage to the interface unit even when a storage medium is not inserted in the interface unit. In response to the storage medium being inserted into the interface unit, the control device temporarily stops the supply of the power supply voltage to the interface unit, and returns the supply of the power supply voltage to the temporarily stopped interface unit. In response to this, information about the user is read from the storage medium.

  Preferably, the control device includes a processing unit that executes a predetermined application and a control unit that performs power supply control to the storage medium and information read control from the storage medium. Supply and cut-off of the power supply voltage to the processing unit are switched according to the power operation by the user. A power supply voltage is supplied to the control unit regardless of the power operation by the user. Regardless of the state of power supply to the processing unit, the control unit reads information about the user in response to the storage medium being inserted into the interface unit.

  Preferably, when the processing unit is activated in response to the storage medium being inserted into the interface unit, the processing unit activates the application after the control unit completes reading of information about the user.

  Preferably, the processing unit stops the application when information cannot be read from the storage medium.

  Preferably, the interface unit includes a detection unit for detecting the insertion / extraction state of the storage medium. The control device determines whether a storage medium has been inserted based on a signal from the detection unit.

  The control device according to the present invention controls an electronic device that can insert a storage medium storing information about a user into the interface unit. The control device supplies a power supply voltage to the processing unit that executes a predetermined application and the storage medium, and information about the user from the storage medium via the interface unit in response to the storage medium being inserted into the interface unit. And a control unit configured to read the data.

  The method for controlling an electronic device according to the present invention is a method for controlling an electronic device in which a storage medium storing information about a user can be inserted into the interface unit. The control method includes a step of supplying a power supply voltage to the storage medium, and a step of reading information on the user stored in the storage medium via the interface unit in response to the storage medium being inserted into the interface unit. Is provided.

  A mobile communication terminal according to the present invention includes an interface unit and a control device. The interface unit is configured to be able to insert a storage medium in which information about the user is stored. The control device supplies power supply voltage to the storage medium inserted in the interface unit, and reads information about the user from the storage medium via the interface unit in response to the storage medium being inserted into the interface unit. Configured.

  In the present invention, in an electronic device in which an IC card can be inserted / removed, information in the IC card can be appropriately read again when the IC card is inserted.

It is the schematic of the electronic device according to this Embodiment. FIG. 2 is an overall block diagram for explaining a hardware configuration of the electronic apparatus of FIG. 1. It is a functional block diagram for demonstrating the detailed structure of the control apparatus in FIG. In this Embodiment, it is a time chart which shows each signal state at the time of SIM card insertion. In this Embodiment, it is a flowchart for demonstrating the process performed with a control apparatus at the time of SIM card insertion. In this Embodiment, it is a flowchart for demonstrating the process performed with a control apparatus at the time of SIM card extraction.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  FIG. 1 is a schematic diagram of an electronic device 100 according to the present embodiment. In FIG. 1, a smart phone that is a mobile communication terminal will be described as an example of the electronic device 100, but the electronic device in the present invention is not limited to this. Other examples of the electronic device 100 include a mobile phone, a personal computer, a tablet terminal, a PDA (Personal Digital Assistance), a portable game machine with a communication function, a music player with a communication function, and the like.

  Referring to FIG. 1, electronic device 100 includes a housing 130, a display 115 as a display unit, a touch panel 110 for detecting a position where a user touch-inputs display 115, and various operations. The operation button 120 includes a connector unit 160 and an interface unit 170 disposed on the side surface of the housing 130.

  The casing 130 is made of plastic such as polycarbonate resin, for example.

  The connector unit 160 and the interface unit 170 are configured by providing a recess in the housing 130 and disposing a connection terminal in the recess. That is, the connector part 160 and the interface part 170 are exposed at a position inside from the side surface of the housing 130.

  The connector unit 160 has a connection terminal for connecting an external connector 250 provided on a connection cable for connecting to another device. More specifically, it is realized as a USB (Universal Serial Bus) interface, an HDMI (High-Definition Multimedia Interface) interface, an audio interface, or the like.

  The interface unit 170 is for mounting various cards as the storage medium 200, for example. More specifically, the interface unit 170 is realized as an interface such as a SIM card, an SD (Secure Digital) card, or a CF (Compact Flash (registered trademark)) card. In the following description, a case where a SIM card is used as the storage medium 200 will be described as an example.

  In FIG. 1, a case where there is one interface unit 170 will be described as an example, but a plurality of interface units 170 may be provided. Further, the connector part 160 and the interface part 170 are provided with cover parts 140 and 150 for protecting the terminal part, respectively.

  The display 115 displays application contents and data. The display 115 is, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display. In addition, a transparent touch panel 110 is attached to the display 115, and various instructions by a touch operation from a user can be received.

  It is assumed that electronic device 100 is basically used by a user holding with one hand or both hands. Further, the electronic device 100 is provided with an acceleration sensor (not shown), and regardless of whether the user holds the longitudinal direction or the short direction of the electronic device 100, the electronic device 100 holds the gripping device based on the signal from the acceleration sensor. The screen display may be switched in a direction suitable for the direction.

  FIG. 2 is an overall block diagram for explaining a hardware configuration of electronic device 100 shown in FIG. In FIG. 2, detailed description of elements overlapping with those in FIG. 1 will not be repeated.

  Referring to FIG. 2, electronic device 100 mainly includes control device 300, memory 105, touch panel 110, display 115, speaker 116, LED (Light Emitting Diode) 117, and connector unit 160. The interface unit 170, the wireless communication unit 180, and the operation buttons 120 are connected to each other via the system bus 125.

  The control device 300 manages the power supply of the electronic device 100 and controls the operation of each unit of the electronic device by reading and executing the program stored in the memory 105. A detailed configuration of the control device 300 will be described later with reference to FIG.

  The memory 105 is realized by a RAM (Random Access Memory), a ROM (Read Only Memory), a hard disk, or the like. The memory 105 stores programs and various data used by the control device 300.

  As described in FIG. 1, the touch panel 110 is provided on the display 115 that functions as a display unit, and is, for example, a capacitive touch panel. The touch panel 110 detects a touch operation on the touch panel 110 by an external object every predetermined time, and outputs the touch coordinates (position) to the control device 300.

  The speaker 116 outputs sound based on a signal from the control device 300. The LED 117 emits light based on a signal from the control device 300. For example, the LED 117 is used as a backlight of the touch panel 110.

  As described above, the connector unit 160 and the interface unit 170 function as an interface with an external device or an external storage medium.

  The wireless communication unit 180 transmits and receives signals via the communication antenna 185 in a contactless manner. The wireless communication unit 180 converts communication data from the control device 300 into a communication signal, and transmits the converted communication signal to another device via the communication antenna 185. In addition, the wireless communication unit 180 converts communication signals received from other devices via the communication antenna 185 into communication data, and outputs the converted communication data to the control device 300. The electronic device 100 can be connected to the Internet via a wireless communication network such as a third generation mobile communication system (3G) or LTE (Long Term Evolution).

  The operation button 120 is disposed on the surface on which the display 115 is provided in the electronic device 100, receives an operation from the user, and outputs the information to the control device 300. For example, the operation buttons 120 include a button for changing the display screen, a confirmation button, a cancel button, and the like.

  FIG. 3 is a functional block diagram for explaining a detailed configuration of the control device 300 in FIG.

  Referring to FIG. 3, control device 300 includes an insertion detection unit 320, a switch 330, a power supply circuit 340, a control unit 350, and a CPU (Central Processing Unit) 360.

  The insertion detection unit 320 is directly supplied with the voltage VCC from the power supply node 310 such as a battery. The insertion detection unit 320 receives the signal IST from the detection unit 175 included in the interface unit 170, generates a signal SIG based on the signal IST, and drives the switch 330. The voltage VCC from the power supply node 310 is applied to the path connecting the detection unit 175 and the insertion detection unit 320 via the resistor R1.

  The detection unit 175 is, for example, a micro switch connected to the ground and the insertion detection unit 320. When the SIM card 200 is inserted into the interface unit 170, the contact of the detection unit 175 is closed. As a result, the potential of the path connecting the detection unit 175 and the insertion detection unit 320 decreases from the potential determined from VCC and R1 to the ground potential.

  That is, the insertion detection unit 320 determines whether the SIM card 200 is inserted in the interface unit 170 by detecting the potential of the signal IST from the detection unit 175. The insertion detection unit 320 receives a pulse signal such that the High state continues for a predetermined time in response to the detection of the insertion of the SIM card 200 into the interface unit 170 by the signal IST from the detection unit 175. Output as SIG.

  The switch 330 is, for example, a MOSFET (Metal Oxide Semiconductor Field-Effect Transistor), the drain is connected to the input of the power supply circuit 340, the gate is connected to the output of the insertion detector 320, and the source is connected to the ground. The switch 330 is driven by the signal SIG from the insertion detection unit 320 and becomes conductive when the signal SIG is in a high state, and reduces the potential of the signal SEL input to the power supply circuit 340 to the ground potential. Although not shown in FIG. 3, when the switch 330 is non-conductive, the signal SEL is set to a predetermined potential higher than the ground potential.

  The power supply circuit 340 is directly supplied with the voltage VCC from the power supply node 310. Power supply circuit 340 receives signal SEL from switch 330. The power supply circuit 340 supplies the power supply voltage PWR to the control unit 350 when the potential of the signal SEL is higher than the ground potential, and stops supplying the power supply voltage PWR to the control unit 350 when the potential of the signal SEL is the ground potential.

  Control unit 350 receives power supply voltage PWR from power supply circuit 340. The controller 350 distributes the power supply voltage PWR and supplies the power supply voltage PWSM to the interface unit 170. That is, the power supply voltage PWSM shows a behavior corresponding to the power supply voltage PWR received by the control unit 350 from the power supply circuit 340.

  Further, when the rising of the power supply voltage PWR is detected, the control unit 350 reads information INFO relating to the user stored in the SIM card 200 and stores the read information in the memory 105. Note that the information about the user includes personal information of the user, ID information of the terminal, billing information used for a credit function, and the like.

  The CPU 360 executes a program (application) stored in the memory 105 using the data stored in the memory 105. CPU 360 receives the states of signals IST and SEL.

  Although not shown in FIG. 3, the power supply voltage supplied to the CPU 360 is switched by the main power supply operated by the user. That is, when the main power supply is set to OFF, the power supply voltage to the CPU 360 is cut off and the CPU 360 stops.

  On the other hand, the insertion detection unit 320 and the power supply circuit 340 are always supplied with the power supply voltage from the power supply node 310 as described above, and can operate even when the main power supply is off.

  FIG. 4 is a time chart showing signal states when the SIM card is inserted in electronic device 100 having control device 300 configured as shown in FIG. In FIG. 4, the horizontal axis indicates time, and the vertical axis indicates the signal IST indicating the insertion state of the SIM card 200, the signal SIG for driving the switch 330, the input signal SEL of the power supply circuit 340, and the supply to the control unit 350. The power supply voltage PWR (that is, summer PWSM with the power supplied to the interface unit 170), the operating state of the CPU 360, and a read signal of information INFO relating to the user are shown.

  Referring to FIGS. 3 and 4, until time t1, the main power supply is set to OFF and CPU 360 is stopped. The SIM card 200 is not inserted into the interface unit 170, and the potential of the signal IST indicates a predetermined potential V1 (> 0) determined from VCC and the resistor R1. At this time, the signal SIG is Low, and the switch 330 is in a non-conductive state. Therefore, the potential of the signal SEL is the predetermined potential V2 (> 0), and the power supply voltage PWR is supplied to the control unit 350. That is, the SIM card 200 is not inserted into the interface unit 170, but the power supply voltage PWSM for supplying to the SIM card 200 is supplied.

  When the SIM card 200 is inserted into the interface unit 170 at time t1, the contact of the detection unit 175 is closed, and the potential of the signal IST is lowered to the ground potential. Then, in response to the decrease in the potential of the signal IST to the ground potential, the insertion detection unit 320 recognizes that the SIM card 200 has been inserted, and outputs a pulse signal SIG for driving the switch 330. (Time t2 to t3).

  While this signal SIG is High, the switch 330 is in a conductive state, and correspondingly, the input signal SEL of the power supply circuit 340 drops from the predetermined potential V2 to the ground potential. In response to this, the power supply voltage PWR to the control unit 350 is cut off, and thereby the power supply voltage PWSM to the interface unit 170 is also cut off.

  When the signal SIG becomes Low at time t3, the switch 330 is turned off, so that the potential of the signal SEL returns to V2. As a result, the power supply voltages PWR and PWSM to the control unit 350 and the interface unit 170 are restored.

  When the control unit 350 detects the rise of the power supply voltage PWR, in response to this, the control unit 350 reads (reloads) information INFO relating to the user stored in the SIM card 200 between times t4 and t5. The read information INFO is stored in the memory 105.

  Further, when the input signal SEL to the power supply circuit 340 returns to the predetermined potential V2 (time t3), the CPU 360 is activated. As a result, a predetermined application is started, application data is initialized using the information INFO regarding the reloaded user, and the information of the inserted SIM card 200 is reflected.

  FIG. 5 is a flowchart for explaining processing executed by the control device 300 when the SIM card 200 is inserted into the interface unit 170 in the present embodiment.

  Referring to FIGS. 3 and 5, control device 300 determines whether or not SIM card 200 has been inserted into interface unit 170 in step (hereinafter, step is abbreviated as S) 100. Determine by.

  If SIM card 200 is not inserted (NO in S100), control device 300 ends the process because it is not necessary to perform the subsequent processes.

  If SIM card 200 is inserted (YES in S100), the process proceeds to S110, and control device 300 executes a chattering prevention process for signal IST. This is because the state described in FIG. 4 is executed a plurality of times in a short time when the contact of the detection unit 175 is repeatedly turned on / off in a short time (chattering) in the insertion operation of the SIM card 200 by the user. It is a process for preventing. More specifically, when the insertion detection unit 320 first detects that the potential of the signal IST has changed to the ground potential, the potential of the signal IST in the insertion detection unit 320 is self-maintained for a predetermined time. Thus, even if the actual potential of the signal IST fluctuates, the ground potential is maintained.

  Accordingly, when insertion of the SIM card 200 is detected (S120), the control device 300 executes a reset process of the power supply voltage PWSM supplied to the SIM card 200 in S130. As described with reference to FIGS. 3 and 4, the power supply voltage reset process sets the signal SIG to High for a short time to turn on the switch 330 and supplies the power supply voltage PWSM while the switch 330 is in the conductive state. Is to stop.

  The control device 300 activates the CPU 360 in S140, and reads the information INFO in the SIM card 200 by the control unit 350 and stores it in the memory 105 in S150.

  Thereafter, the control device 300 activates a predetermined application by the CPU 360 in S160 and initializes data based on the user information stored in the memory 105 and the like.

  FIG. 6 is a flowchart for explaining a process executed by the control device 300 when the SIM card 200 is extracted from the interface unit 170.

  Referring to FIGS. 3 and 6, control device 300 determines in step S <b> 200 whether or not SIM card 200 is removed while the main power is turned on.

  If SIM card 200 has not been removed (NO in S200), the subsequent processing is skipped, and control device 300 ends the processing. Although not shown in FIG. 6, chattering prevention processing may be performed as in FIG. 5.

  When SIM card 200 is extracted (YES in S200), the process proceeds to S210, and control device 300 detects the removal of SIM card 200 in insertion detection unit 320. In S220, sampling information is notified to the CPU 360.

  Thereafter, in the application running on the CPU 360, an information reading operation in the SIM card 200 is executed (S230), and it is determined whether the information can be read (S240).

  If the information of SIM card 200 can be read (YES in S240), since SIM card 200 is still inserted into interface unit 170, control device 300 ends the process.

  If the information in SIM card 200 cannot be read (NO in S240), the process proceeds to S250, and control device 300 stops the application being executed by CPU 360. As a result, execution of an application using inaccurate SIM card information data remaining in the memory 105 is prevented.

  By performing control according to the above processing, even when the SIM card is inserted without the main power turned on, the information in the SIM card is reloaded appropriately to update the data in the application. can do. Therefore, it becomes possible to operate the application by reflecting appropriate information of the SIM card.

  If the SIM card is removed while the main power is turned on, the application is stopped. Inappropriate execution of an application using inaccurate SIM card information data is prevented.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  100 electronic device, 105 memory, 110 touch panel, 115 display, 117 LED, 116 speaker, 120 operation buttons, 125 system bus, 130 housing, 140, 150 lid, 160 connector unit, 170 interface unit, 175 detection unit, 180 wireless Communication unit, 185 communication antenna, 200 storage medium, 250 external connector, 300 control device, 310 power supply node, 320 insertion detection unit, 330 switch, 340 power supply circuit, 350 control unit, 360 CPU, R1 resistance.

Claims (9)

An interface unit configured to be able to insert a storage medium storing information about the user;
In addition to supplying a power supply voltage to the storage medium inserted into the interface unit, and in response to the storage medium being inserted into the interface unit, information about the user is transmitted from the storage medium via the interface unit. An electronic device comprising: a control device configured to read. The control device supplies a power supply voltage to the interface unit even when the storage medium is not inserted in the interface unit,
In response to the storage medium being inserted into the interface unit, the control device temporarily stops the supply of power supply voltage to the interface unit, and the power supply to the interface unit temporarily stopped The electronic device according to claim 1, wherein information related to the user is read from the storage medium in response to a return of voltage supply. The control device includes:
A processing unit for executing a predetermined application;
A control unit for performing power supply control to the storage medium and reading control of information from the storage medium,
Supply and interruption of the power supply voltage to the processing unit is switched according to the power operation by the user,
The control unit is supplied with a power supply voltage regardless of the power operation by the user,
2. The control unit according to claim 1, wherein the control unit executes reading of information about the user in response to the storage medium being inserted into the interface unit, regardless of a power supply state to the processing unit. Electronics.   The processing unit, when activated in response to the storage medium being inserted into the interface unit, activates an application after the control unit completes reading of information about the user. The electronic device as described in.   The electronic device according to claim 3, wherein the processing unit stops an application when information cannot be read from the storage medium. The interface unit includes a detection unit for detecting an insertion / removal state of the storage medium,
The electronic device according to claim 1, wherein the control device determines whether the storage medium is inserted based on a signal from the detection unit. A control device for controlling an electronic device capable of inserting a storage medium storing information about a user into an interface unit,
A processing unit for executing a predetermined application;
The power supply voltage is supplied to the storage medium, and the user-related information is read from the storage medium via the interface unit in response to the storage medium being inserted into the interface unit. A control device comprising a control unit. A method of controlling an electronic device capable of inserting a storage medium storing information about a user into an interface unit,
Supplying a power supply voltage to the storage medium;
A method for controlling an electronic device comprising: reading information on a user stored in the storage medium via the interface unit in response to the storage medium being inserted into the interface unit. An interface unit configured to be able to insert a storage medium storing information about the user;
In addition to supplying a power supply voltage to the storage medium inserted into the interface unit, and in response to the storage medium being inserted into the interface unit, information about the user is transmitted from the storage medium via the interface unit. A mobile communication terminal comprising a control device configured to read.

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