JP2009087077A - Mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal taking no time for access without keeping a user waiting when displaying information in a non-contact IC chip, and consuming no extra power. <P>SOLUTION: Value information of electronic money or the like in the non-contact IC chip 5 is updated by non-contact data communication 5a with a reader/writer without the participation of a main control part 8. The non-contact IC chip 5 outputs a carrier wave detection signal 5c when receiving the carrier wave of a communicable level from the external reader/writer 200. When displaying the value information on a display part 12, in the case of detecting the carrier wave detection signal 5c after the last display, the main control part 8 reads the value information in the non-contact IC chip 5 by cable communication UART 5e, stores the value information in a value information storage part 11b and displays the value information on the display part 12, and in the case of not detecting the carrier wave detection signal 5c after the last display. the main control part 8 displays the value information stored in the value information storage section 11b at the last display time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to control for displaying balance information of value information in a non-contact IC chip in a portable terminal equipped with a non-contact IC chip capable of storing value information such as electronic money.

  There is a portable terminal called Osaifu-Keitai (R) that has a function of handling electronic money and is equipped with a non-contact IC chip such as FeliCa (R). In such a portable terminal, the electronic money in the non-contact IC chip is It is necessary to display balance information and the like.

  The non-contact IC chip in the portable terminal has two types of communication means: a wireless communication interface with a reader / writer device outside the portable terminal and a wired communication interface with a host CPU in the portable terminal. The electronic money balance information of the non-contact IC chip can be updated by using any of the communication means.

  Therefore, since the balance information of the electronic money in the non-contact IC chip is updated by the wireless communication interface without involving the host CPU, when the host CPU displays the balance information of the electronic money in the non-contact IC chip, Each time, it is necessary to access the contactless IC chip through the wired communication interface and refer to the balance information of the electronic money.

  For example, as such a technique, in an information processing terminal incorporating a non-contact IC card (chip), the program control unit 111 in the information processing terminal displays the balance information or the like on the display unit 112 each time. A technique for accessing the non-contact IC chip 100 and referring to the memory 104 in the non-contact IC chip 100 is disclosed (for example, Patent Document 1).

However, since it takes time to access the non-contact IC chip by the host CPU, there is a problem that the user is made to wait and power for accessing the non-contact IC chip is also consumed. .
JP 2003-141434 A (pages 4 to 7, FIGS. 1 to 6)

  As described above, when displaying balance information of value information such as electronic money in a non-contact IC chip, always access the contact IC chip and refer to value information such as electronic money in the non-contact IC chip. Therefore, there is a problem in that the user is made to wait and power is consumed excessively.

  The present invention solves such a problem, and in a portable terminal equipped with a non-contact IC chip, when displaying balance information of value information in the non-contact IC chip, the user does not spend time on access. An object of the present invention is to provide a portable terminal that does not make a user wait and consumes no extra power.

  To achieve the above object, a portable terminal of the present invention has a non-contact data communication interface with a reader / writer device and a wired communication interface with a control means inside the portable terminal, and the reader / writer device And a non-contact IC chip that controls value information instructed by the control means, stores current contents of the value information, detects a carrier wave of the non-contact data communication, and outputs a carrier wave detection signal; and A value information storage unit disposed in a memory address space and storing a copy of the current content of the value information in the non-contact IC chip, and the control unit displays the current content of the value information; If the carrier wave detection signal has been output since the previous display, the current content of the value information in the non-contact IC chip is displayed on the wired communication interface. The value information is stored in the value information storage means and the current contents of the value information are displayed on the display means. If the carrier wave detection signal has not been output since the previous display, the value information storage means is stored at the time of previous display. The current content of the value information is displayed on the display means.

  According to the present invention, when displaying balance information of value information such as electronic money in a non-contact IC chip in a portable terminal equipped with a non-contact IC chip, the user waits for the user without taking time to access. And no extra power is consumed.

  FIG. 1 is a block diagram of a mobile terminal according to an embodiment of the present invention. The portable terminal 100 performs a non-contact data communication using an induced electromotive force with an external reader / writer 200 and wireless communication with a base station (not shown) of a mobile communication network. It has a function to make a phone call or e-mail.

  The mobile terminal 100 has a non-contact IC chip 5 such as FeliCa (R) mounted therein in order to realize the function of performing the non-contact data communication. Value information such as electronic tickets and their current contents are stored. Further, there are two communication interfaces of the non-contact IC chip 5, which are interfaces for performing non-contact data communication and wired communication.

  The wired communication is a UART (Universal Asynchronous Receiver Transmitter) 5e. UART defines a protocol as a standard wired communication interface such as a serial port, and a detailed description thereof is omitted. One route for rewriting value information such as electronic money and electronic tickets in the contactless IC chip 5 is by contactless data communication. This is performed without involving the main control unit 8 that controls the main functions of the mobile terminal 100. The other route is performed by using an interface for the main control unit 8 to perform the wired communication.

  Next, the configuration of the mobile terminal 100 will be described. The portable terminal 100 includes a battery 1, a set power switch 2, a set power supply unit 3, a constant power supply unit 4, a non-contact IC chip 5, an antenna 6, a latch 7, a main control unit 8, a communication unit 9, an antenna 10, and an information storage unit. 11, a display unit 12, a key input unit 13, and the like. The non-contact IC chip 5 further includes an analog unit 51, a chip control unit 52, and a memory 53.

  The battery 1 is a secondary battery that serves as a power supply source for the entire mobile terminal 100. The set power switch 2 is a switch for user operation, and turns the set power supply unit 3 on and off. The set power supply unit 3 is a stabilized power supply, and supplies power to the main control unit 8, the communication unit 9, the antenna 10, the information storage unit 11, the display unit 12, the key input unit 13, and the like that are the main parts of the mobile terminal 100. To do. Accordingly, the main control unit 8 and the like become active when the set power switch 2 is turned on.

  The constant power supply unit 4 is a stabilized power supply that is always on, and always supplies power to the non-contact IC chip 5 and the latch 7. The non-contact IC chip 5 and the latch 7 are always active.

  The non-contact IC chip 5 transmits / receives data by a non-contact within a very short distance of several centimeters or less with the external reader / writer 200 via the antenna 6 by non-contact data communication. In addition, data is transmitted and received by wired communication between the chip control unit 52 and the main control unit 8 inside the portable terminal 100.

  The non-contact IC chip 5 holds an application for controlling value information such as electronic money, electronic ticket, and point service. Then, in response to a request from the non-contact data communication or wired communication, the non-contact IC chip 5 executes the instructed application, and transmits each value information in the non-contact IC chip 5 for updating or reference. I do.

  The analog unit 51 processes analog signals transmitted and received from the antenna 6 such as detection, modulation / demodulation, and clock extraction. The chip control unit 52 performs processing of transmission / reception data, control of the memory 53, control of each interface for performing wired communication, and the like. The memory 53 holds the application program. Further, as the current contents of the value information, the current contents such as the balance in the electronic money, the contract ticket information in the electronic ticket, and the number of points in the point service are stored.

  A carrier wave detection signal 5c, which is an output signal of the non-contact IC chip 5, is a signal that is output from the non-contact IC chip 5 when receiving a carrier wave at a communicable level from the external reader / writer 200.

  The access control signal 5d, which is an input signal of the non-contact IC chip 5, is in a state where the entire non-contact IC chip 5 is in a wake-up state when the signal is active, and preparation for data transmission / reception by the UART 5e is completed. In this state, the power consumption of the non-contact IC chip 5 itself increases.

  The UART 5e that performs bidirectional communication is a UART that is an interface for performing standard wired communication such as a serial port, and defines protocols such as a start bit and a stop bit.

  The latch 7 is a flip-flop for storing the carrier wave detection signal 5c of the chip controller 52 since it is an instantaneous signal. This is because when the set power supply 3 is off and the instantaneous carrier wave detection signal 5c is output, the main control unit 8 is brought into the operation state before the power is turned on after the set power supply 3 is turned on later. This is for detecting whether or not the carrier wave detection signal 5c is output during the operation after power-on.

  The main control unit 8 includes a CPU, ROM, RAM, and the like (not shown), and executes main functions of the mobile terminal 100. The main control unit 8 controls the wired communication with the non-contact IC chip 5 and the display control of the current contents of value information such as electronic money and electronic tickets in the non-contact IC chip 5 particularly in the present invention. .

  The communication unit 9 performs radio wave transmission / reception processing, modulation / demodulation processing, and the like of the antenna 10. The antenna 10 transmits and receives radio waves to and from a base station (not shown) of the mobile communication network.

  The information storage unit 11 includes a main control unit access history 11 a and a value information storage unit 11 b and is controlled by the main control unit 8. The display unit 12 is a display unit such as an LCD. The key input unit 13 is input means for operating various keys.

  FIG. 2 is a diagram illustrating the information storage unit 11 of the mobile terminal according to the embodiment of the present invention. The information storage unit 11 includes a main control unit access history 11a and a value information storage unit 11b.

  The main control unit access history 11a is a memory that records a history of the main control unit 8 accessing the non-contact IC chip 5 through wired communication. In this value information type column, the type of value information such as electronic money, electronic ticket, point service, etc., instructed to the non-contact IC chip 5 by the main control unit 8 is recorded. The request command column records whether the current content of the value information of each service is an update or reference instructed to the non-contact IC chip 5 by the main control unit 8.

  For example, in order of access history 1, the balance is instructed by electronic money, in order of history 2, the contract ticket information is instructed by electronic ticket, and in point of history 3, the point is updated by the point service. In the history order 4, a history instructing to refer to the balance with electronic money is recorded.

  Therefore, when the history is updated, it means that the current content of the value information recorded in the memory 53 in the non-contact IC chip 5 has been updated, and in the case of reference, the memory 53 in the non-contact IC chip 5 is updated. This means that the current content of the value information recorded in the above is sent as it is for reference from the non-contact IC chip 5 to the main control unit 8 without changing the current content.

  If the history is not recorded in the main control unit access history 11a, it means that the main control unit 8 has not accessed the non-contact IC chip 5, and the non-contact IC in the wire communication by the main control unit 8 is performed. There is no change in the current contents of the value information of the chip 5.

  The value information storage unit 11b is a memory in which the main control unit 8 instructs the non-contact IC chip 5 to acquire the current contents of each piece of value information in the non-contact IC chip 5 and record it. Current contents such as a balance in electronic money, contract ticket information in electronic tickets, and the number of points in point services are stored.

Next, the operation of the main control unit 8 will be described.
FIG. 3 is an operation flowchart of the main control unit of the mobile terminal according to the embodiment of the present invention, and relates to “wired access processing for a non-contact IC chip” by the main control unit itself. The user operates the key input unit 13 to request the type of value information such as electronic money, electronic ticket, and point service regarding the non-contact IC chip 5 and whether to update or refer to the current contents of the value information. As a result, the “access processing for the non-contact IC chip” of the main control unit 8 is started. Of course, input of a personal identification number and a contract for updating the current contents are necessary, but the description is omitted because it is not directly related to the present invention.

  When entering the “wired access processing for a non-contact IC chip”, the main control unit 8 checks whether the type of value information requested by the user and whether the current content is updated or referred to (step S1).

  Next, the main control unit 8 turns on the access control signal 5d to activate the non-contact IC chip 5 in order to perform wired access to the non-contact IC chip 5 (step S2).

  Then, the confirmation items in step S1 are instructed to the non-contact IC chip 5 by the UART 5e (step S3).

  In response to the processing in step S3, the non-contact IC chip 5 updates the current contents of the instructed value information when receiving an update instruction, not shown. When a reference instruction is received, the current content of the instructed value information is referred to and transmitted to the main control unit 8.

  Next, the main control unit 8 turns off the access control signal 5d and puts the non-contact IC chip 5 into a sleep state in order to end the access to the non-contact IC chip 5 (step S4).

  Next, the main control unit 8 records the content of step S1 as a history in the main control unit access history 11a. That is, the type of value information executed in the current access process and whether it is updated or referenced are recorded (step S5). Then, the “wired access process for the non-contact IC chip” is completed. This step S5 is a notification to the “value information display process” described later (FIG. 4).

  FIG. 4 is an operation flowchart of the main control unit of the mobile terminal 100 according to the embodiment of the present invention, and relates to “value information display processing”. When there is a value information display request by a user's key operation or a periodic value information display request by a timer, the “value information display process” of the main control unit 8 is activated.

  First, the main control unit 8 checks the output of the latch 7 and checks whether or not a carrier wave detection signal is received (step S11).

[When receiving a carrier wave detection signal, that is, when there is non-contact data communication from a reader / writer]
If the output of the latch 7 is ON, that is, if “carrier wave detection signal is received”, the latch 7 is reset (step S12).

  “There is reception of a carrier wave detection signal” means that the main controller 8 is not involved and the value in the non-contact IC chip 5 is communicated between the non-contact IC chip 5 and the external reader / writer 200 via non-contact data communication. It means that the current contents of the information may have been updated. Therefore, the main control unit 8 turns on the access control signal 5d as an access preparation for acquiring value information in the non-contact IC chip 5 (step S13).

  Then, the UART 5e instructs the non-contact IC chip 5 to refer to all value information (step S14). Since this UART requires a start bit and a stop bit and is also serial communication, it cannot be read / written at high speed so as to access the address space of the work memory of the main control unit 8. Further, the non-contact IC chip 5 takes time to execute reference to all value information and transmit the current contents of the value information to the main control unit 8.

  The main control unit 8 records the current contents of all received value information as the current contents for each type of value information in the value information storage unit 11b (step S15). Then, in order to end the access to the non-contact IC chip 5, the access control signal 5d is turned off (step S16).

  During steps S13 to S16, the entire non-contact IC chip 5 is in a wake-up state, and power consumption increases. In addition, it takes a long time for wired communication.

  Next, the main control unit 8 reads the current content of the value information from the value information storage unit 11b (step S30), displays it on the display unit 12 (step S31), and ends the “value information display process”.

[When no carrier wave detection signal is received, that is, when there is no contactless data communication from the reader / writer]
If the output of the latch 7 is OFF in step S11, that is, “no carrier wave detection signal is received”, the main control unit 8 determines whether or not the main control unit 8 itself has performed “access processing to the non-contact IC chip” (FIG. 3). This is done by checking the part access history 11a (step S20).

  When the history remains in the main control unit access history 11a (YES in step S20), the main control unit 8 next checks the request commands for all the main control unit access history 11a (step S21). If there is even one update, it means that the current contents of the value information in the non-contact IC chip 5 has been updated. Therefore, as access preparation for acquiring the value information in the non-contact IC chip 5, The control signal 5d is turned on (step S22).

  Then, the access history instructs the contactless IC chip 5 to reference the updated value information by the UART 5e (step S23). In the example of FIG. 2, the electronic money and the point service are updated. Therefore, the main control unit 8 instructs the contactless IC chip 5 to refer to the value information corresponding to the electronic money and the point service. The current contents of each value information are received and recorded in the value information storage unit 11b (step S24).

  This processing time may be shorter than the reference time for all value information in step S14, and power consumption can be reduced accordingly.

  Then, in order to end the access to the non-contact IC chip 5, the access control signal 5d is turned off (step S25). Then, the entire history of the main control unit access history 11a is deleted (step S26). This is because the main control unit access history 11a is a history for display purposes, and is deleted because it has been used.

  Next, the main control unit 8 reads the current content of the value information from the value information storage unit 11b (step S30), displays it on the display unit 12 (step S31), and ends the “value information display process”.

[No carrier wave reception and only reference of value information by the main control unit 8 itself]
If only the reference is made in step S21, it means that the current content of the value information of the non-contact IC chip 5 has not been updated, and it is not necessary to directly acquire information from the non-contact IC chip 5. Then, the entire history of the main control unit access history 11a is deleted (step S26). This is because the main control unit access history 11a is a history for display purposes, and is deleted because it has been used.

  Then, the current content of the value information already stored in the value information storage unit 11b in step S15 or step S24 is read (step S30), and this information is displayed on the display unit 12 (step S31). To finish.

  Since the reading of the value information storage unit 11b in step S30 only requires the access time of the memory in the address space of the main control unit 8, the value information can be displayed in a short time after a display request is made. Further, it is not necessary to acquire value information from the non-contact IC chip 5 and it is not necessary to put the non-contact IC chip 5 into a wake-up state, so that power consumption can be reduced.

[When no carrier wave is received and there is no access history by the main control unit 8 itself]
If NO in step S20, it means that the value information of the non-contact IC chip 5 has not been updated, and there is no need to directly acquire information from the non-contact IC chip 5. Therefore, the current content of the value information already stored in the value information storage unit 11b in step S15 or step S24 is read (step S30), and this information is displayed on the display unit 12 (step S31). To finish.

  In general, the display of value information in a non-contact IC chip is more frequent than the update of value information in the non-contact IC chip by non-contact data communication or wired communication. Therefore, when performing the display process, it can be said that the frequency of only the process of step S30 without performing these processes is higher than the process of steps S14 and S23. Therefore, the effect of having a short processing time in step S30 is great.

  As described above, according to the embodiment of the present invention, when the non-contact IC chip does not detect a carrier wave, it is not necessary to acquire value information in the non-contact IC chip. No extra power is consumed without causing the user to wait without spending time.

  In addition, the display control corresponding to both the update of the value information in the non-contact IC chip by the non-contact data communication and the update of the value information in the non-contact IC chip by the main control unit itself was performed. Corresponding display control may be used.

  Further, the carrier detection signal 5c is held by the latch 7 and the main control unit 8 checks. However, the latch 7 may be deleted and the carrier control signal 5c may be checked directly by the main control unit 8. . In that case, since the main control unit 8 cannot detect the carrier wave detection signal 5c before the active state, the main control unit 8 always acquires value information in the non-contact IC chip when the active display is performed and the first display is performed. What should I do?

The block diagram of the portable terminal which concerns on the Example of this invention. The figure explaining the information storage part 11 of the portable terminal which concerns on the Example of this invention. The operation | movement flowchart (wired access process with respect to a non-contact IC chip) of the main control part of the portable terminal which concerns on the Example of this invention. The operation | movement flowchart (value information display process) of the main control part of the portable terminal which concerns on the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery 2 Set power switch 3 Set power supply part 4 Constant power supply part 5 Non-contact IC chip 6 Antenna 7 Latch 8 Main control part 9 Communication part 10 Antenna 11 Information storage part 11a Main control part access history 11b Value information storage part 12 Display part 13 Key Input Unit 51 Analog Unit 52 Chip Control Unit 53 Memory 100 Portable Terminal 200 Reader / Writer

Claims (4)

It has a non-contact data communication interface with a reader / writer device and a wired communication interface with a control means inside the portable terminal, controls value information instructed by the reader / writer device and control means, and A non-contact IC chip that stores current contents of information, detects a carrier wave of the non-contact data communication, and outputs a carrier wave detection signal;
A value information storage means arranged in a memory address space of the control means, wherein the current information of the value information in the non-contact IC chip is copied and stored;
The control means includes
When displaying the current content of the value information, if the carrier wave detection signal has been output since the previous display, the current content of the value information in the non-contact IC chip is read by the wired communication interface and the value information storage is performed. Means for displaying the current contents of the value information on the display means, and if the carrier wave detection signal has not been output since the previous display, the current contents of the value information stored in the value information storage means at the previous display are displayed. A portable terminal characterized by being displayed on a display means. It has a non-contact data communication interface with a reader / writer device and a wired communication interface with a control means inside the portable terminal, controls value information instructed by the reader / writer device and control means, and A non-contact IC chip that stores current contents of information, detects a carrier wave of the non-contact data communication, and outputs a carrier wave detection signal;
A value information storage means arranged in a memory address space of the control means, wherein the current information of the value information in the non-contact IC chip is copied and stored;
The control means includes
When displaying the current content of the value information, if the non-contact IC chip has been accessed by the control means via the wired communication interface after the previous display, the current content of the value information in the non-contact IC chip is displayed. Read by the wired communication interface, store in the value information storage means, display the current contents of the value information on the display means, and the non-contact IC chip is accessed by the control means by the control means after the previous display. Otherwise, the mobile terminal displays the current contents of the value information stored in the value information storage means at the time of previous display on the display means. The control means includes
When displaying the current content of the value information, if the current content of the value information of the non-contact IC chip is updated by the control means through the wired communication interface after the previous display, the value in the non-contact IC chip is displayed. The current content of information is read by the wired communication interface, stored in the value information storage means, and the current content of the value information is displayed on the display means. 3. The portable terminal according to claim 2, wherein if the current content of the value information of the IC chip has not been updated, the current content of the value information stored in the value information storage means at the time of previous display is displayed on the display means. . The control means includes
When displaying the current contents of the value information, if the control means has updated any of the current contents of the plurality of value information of the non-contact IC chip by the control means after the previous display, the non-contact The current content of the updated value information in the IC chip is read by the wired communication interface, stored in the value information storage means, and the current content of the value information is displayed on the display means. If there is value information that has not been updated among the current contents of the plurality of value information of the non-contact IC chip in the wired communication interface, the current contents of the value information stored in the value information storage means at the time of previous display are displayed. The portable terminal according to claim 2, wherein the portable terminal is displayed on a means.

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