JP2013206305A - Ic card reading display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card reading display device for making it unnecessary to perform any operation of pressing a button, and for reducing the consumption of a battery in a display device for conveniently confirming data recorded in a card as necessary.SOLUTION: By using a posture detection function by a 3D accelerator sensor 11 installed in a pedometer 1 (a portable electronic apparatus including a 3D accelerator sensor, data processing determination means and display means for readably displaying data), it is detected that the pedometer is put in a reading posture. After the lapse of a predetermined time (t1) since the reading posture is stabilized, a scan standby state in a time (t2) is set, and when the abutment of a card is detected during this time, the acceleration change is detected, and a read state is obtained, and currents are supplied to an apparatus side loop antenna, and data are read via communication with the card side, and displayed at a display device.

Description

  The present invention relates to a display device that reads and displays data held in an IC card.

  Suica, PASMO, Edy, WAON, nanaco (all registered trademarks) and other transportation and distribution cards are said to have issued more than 100 million cards in Japan. The number of uses is increasing rapidly. Such a non-contact passive IC card (hereinafter simply referred to as a card) has a loop antenna and a data storage communication IC incorporated therein, and when it is held over a reader / writer such as a ticket gate or cash register, it is induced in the coil of the card. The IC of the card is activated by the power supply, and various data are transferred at the same time by a carrier wave of 13.56 MHz. If necessary, the data held by the card is readable and displayed on a reader / writer display device (hereinafter referred to as a display device). This system conforms to international standard ISO / IEC 14443, domestic standard Felica, and upward compatible ISO / IEC 21481 (NFC IP-2) of both standards.

  However, data such as the balance and points recorded on the card cannot be confirmed unless the card is read from the display device by holding the card over the reader / writer or the receipt is kept. Also, current reader / writers are large and inconvenient to carry, such as those installed in stations and stores, or those that are connected to a personal computer. For this reason, there is a demand for means that can be easily confirmed when necessary.

  Patent Document 1 proposes a portable reader for a non-contact IC card.

  In this reading device, an operation is performed in which data is read from a card by setting a card in a display device and then pressing a button to pass a current through a loop antenna (excitation coil). This is because the portable reading device is small and has a small battery capacity, and it cannot be energized at all times and the card side can be excited like a lead / writer at a ticket gate.

JP 2000-48137 A

  The present invention provides a display device that can easily check data recorded on a card when necessary, does not require an operation such as pressing a button, and has a low battery consumption. Is an issue.

  IC card reading function for a portable electronic device (for example, a mobile phone having a pedometer or posture recognition function, hereinafter referred to as the electronic device) provided with a 3D acceleration sensor, a data processing determination means, and a display means for displaying data in a readable manner Is switched from the normal mode (pedometer mode if it is a pedometer) provided in the electronic device to the reader mode, and in the reader mode, the electronic device functions as a card reading and displaying device. Since the electronic device is portable and is a small device that is carried everyday, the electronic device having a card reading / display function is a means for easily confirming data on the card when necessary.

Since the electronic device includes a 3D acceleration sensor, the device itself can detect its posture. In the normal mode, this function is used to count, for example, the number of steps (the number of specific acceleration change patterns) and display the result in a readable manner.

Using the posture detection function of the 3D acceleration sensor provided in the electronic device, the device detects a reading posture in which the electronic device is going to read the card data, and the device-side loop antenna (excitation) provided in the portion functioning as a reader Power on automatically. The power that is turned on is shut off after the end of data reading (scanning) from the card on the device side, or if the reading posture continues for a predetermined time, it is automatically shut off after the set time has elapsed. It is determined from the combination of the characteristics of the transmission waveform (acceleration change) of each of the XYZ three axes detected by the 3D acceleration sensor and the duration.

  The transmitted waveform from the 3D acceleration sensor is carried by a person walking with a pedometer, for example, when the electronic device functions as a card reader and is in a card reading posture, or when operating in the normal mode. It is clearly different from the transmission waveform when it is in a bag, in a bag, or left on a desk.

  Therefore, it is determined whether or not the electronic device is in a posture to read the data of the card from the pattern of the transmission waveform output from the 3D acceleration sensor of the electronic device. To get the lead state and get data from the card. Then, in order to suppress battery consumption, the lead state is terminated after a set predetermined time.

  When determining that the electronic device is in a reading posture for reading a card, there are various ways of capturing a pattern of a transmission waveform from the 3D acceleration sensor. Further, as illustrated in FIG. 8, in order to detect that the card is in contact with the pedometer waiting for scanning in the read mode, the waveform of the acceleration change at that time is approximated to a backward difference using a differentiation process. It can also be used in combination with a value and a threshold.

  In order to obtain a device for reading a card, a device to which a transmission / reception function and an IC data display function are added is, for example, a pedometer or a mobile phone capable of posture recognition, but is not limited thereto. Basically, it is only necessary to have a space and a display device that can be carried and can incorporate a device-side loop antenna and a device for reading a card.

  Conventionally, there is no one that detects that the electronic device is in a reading posture with a 3D acceleration sensor and switches on by the detection to obtain card data. A known reading device has a configuration in which a button is pressed each time reading is performed or the reader-side coil is always energized.

  There is the convenience that the card data can be read at hand by a portable electronic device (the electronic device) that is always carried.

  Switching from the normal mode to the reader mode of the electronic device is because the electronic device shifts to a read state only when the electronic device is set in a reading posture with respect to the card or the card is brought into contact with the electronic device. , No need for effort.

Since the read state is completed at the set predetermined time, there is little wasted power consumption. In addition, the pedometer may be left on a stationary object such as a desk, and the electronic device may be in a reading state. In this case as well, power to the loop antenna on the device is cut off after a predetermined time. Therefore, power consumption is small.

  As a simple card reader, it does not have a single function as a device, but it has original functions such as a pedometer, and is combined with a card reader function in a small device that is carried everyday. Therefore, the waste of being a single device can be eliminated.

(B) is a plan view of the pedometer, (b) is a front view Block diagram showing functions on the pedometer side and IC card side as devices Diagram showing mode transition in pedometer Card reading flow (A) is a transmission waveform in the pedometer mode, (B) is a diagram for explaining the backward difference approximation method of (A). (A) is a waveform at the time of reading in a stationary state, (b) is a diagram for explaining the backward difference approximation method of (a). Waveform when reading in a stationary state after rotation The figure explaining how to move to the lead state by the backward difference approximation method

  A pedometer is often used as the electronic device that is always carried and at hand when necessary, and uses a 3D acceleration sensor for its function. A card reading function is added to the IC card reading display device.

  When the card reading device is changed from the pedometer mode to the reader mode, the card reading device is automatically in a reading state when reading the card, and it is not necessary to press a reading button or the like each time.

  The function / configuration of the pedometer can also be used to avoid the waste of becoming a single device with only a reading function.

  1A and 1B show a pedometer 1 according to this embodiment. A function button 3 and a display unit 4 are designed on the surface of the thin rectangular case 2.

  As the function buttons 3 of the pedometer 1, a reading button 5, a switching button 6 and a memory button 7 are provided. The display unit 4 is a small liquid crystal display device.

  Inside the case 2 is stored a control unit 9 for reading and displaying the data of the pedometer control function and the non-contact passive card 8 (FIG. 2). FIG. 2 is a block diagram of the control function. The CPU 10 includes a 3D acceleration sensor-11, a read / write circuit (R / WIC) 12, an operation button signal input unit 13, a display device 14, and a device-side loop antenna 15. Connected through the bus. Reference numeral 16 denotes a vibrator for generating a control clock, and reference numeral 17 denotes a coin battery as a power source.

  As shown in FIG. 2, the card 8 includes a card-side loop antenna 18 and a data storage communication IC 19, and the card-side loop antenna 18 is connected to the data storage communication IC 19.

As shown in FIG. 3, the pedometer 1 has functions of a clock mode and a reader mode with a pedometer mode as a center. These can be switched cyclically by pressing the switching button 6 described above. Further, by pressing the reading button 5, it is possible to directly shift from the clock mode or the pedometer mode to the reader mode. In any mode, the reading state is set according to the posture of the pedometer 1 as a device, and the pedometer can be set in a reading state by contact (contact) between the card and the pedometer 1. In the read state, the data on the card 8 can be automatically read and displayed.

  The memory button 7 is a button for sequentially calling past data stored in the pedometer mode on a daily basis.

  The principle and circuit specifications for demonstrating the functions of the pedometer mode and the clock mode are those currently known, and a function as a reader mode is added thereto.

  First, the R / WIC 12 is added to the CPU 10 and the functional component of the pedometer mode and the clock mode connecting the 3D acceleration sensor 11, the operation button signal input unit and the display device 14, and the device side loop antenna 15 is added thereto. Connecting.

  Further, a reading posture determination unit is further provided in the CPU 10 at a place where a transmission waveform from the 3D acceleration sensor 11 is determined, and a waveform pattern in which the transmission waveform from the 3D acceleration sensor 11 is determined in advance, that is, the pedometer 1 is in a reading posture. When it is an aspect that means that there is a loop antenna excitation signal from the CPU 10 to the R / WIC 12, an excitation current is passed from the coin battery 17 to the device side loop antenna 15, and the pedometer 1 and the card 8 are scanned. It will be in a standby state (read state).

  The following transmission waveform signal can be obtained from the 3D acceleration sensor 11 provided in the pedometer.

  FIG. 5 (a) shows a transmission waveform when being carried while walking, and FIG. 6 (b) shows a pedometer held in hand and the card 8 is brought into contact with the pedometer 1 in a stable state (5 7 is a transmission waveform when the card 8 is brought into contact with the case 2 after being rotated around the side parallel to the Y axis of the case 2 (5 times).

  The transmitted waveform signal transmitted from the 3D acceleration sensor 11 of the pedometer 1 to the CPU 10 while walking with the pedometer 1 is as shown in FIG. 5 (a), and the three axes of XYZ are short and compared. Large acceleration changes are repeated at regular time intervals. In this transmission waveform, a portion that remains stationary for a predetermined time (t1) set as shown in FIG. 7 cannot be found. FIG. 5B is a diagram showing FIG. 5A by the backward difference approximation method.

  In the embodiment, when the pedometer 1 is in a stationary state for a predetermined time (t1) set by the pedometer 1, the pedometer 1 determines that the pedometer 1 is in a reading posture (a state in which the pedometer 1 is now trying to read the card 8). The scan standby state is entered. In the scan standby state, any acceleration change is detected on one of the XYZ axes in the 3D acceleration sensor 11 provided in the pedometer 1 by the card contacting the pedometer or conversely the pedometer 1 contacting the card. It is a state waiting for it to be done.

  When the pedometer 1 touches the card 8 during this state and there is an acceleration change, and the change value is equal to or greater than a set threshold, the lead state is entered.

The lead state is a state in which the device-side loop antenna 15 and the card-side loop antenna 18 are magnetically coupled, and the data storage communication IC is activated by the induced power generated in the card-side loop antenna 18, and the 13.56 MHz carrier wave Is used to communicate between the device side and the card side through the device side loop antenna 15 and the card side loop antenna 18. At this time, the data stored on the card 8 side is scanned by the pedometer 1. The data received by the pedometer 1 is transmitted to the CPU 10 through the R / WIC 12, processed into readable display data, and transmitted to the display device. Thereby, data such as the remaining amount stored in the card 8 is displayed on the display device and can be read.

  When the pedometer 1 scans to acquire data from the card 8, the process performed by the control unit 9 is displayed as a flow as shown in FIG.

  When the contact with the card 8 is detected (step S1), the device side loop antenna (temporary coil) is energized (step S2). As a result, communication is performed with the activated data storage communication IC on the card 8 side, and the data (remaining amount information here) recorded on the card 8 is scanned (step S3) and read to the pedometer side. When reading fails, an error indicating reading failure is displayed on the display unit 4 (step S6), and the read state is terminated after a predetermined time (step S7). The end of the lead state is the interruption of energization of the device side loop antenna, the return to the pedometer mode, or the sleep state of the pedometer 1 (display OFF).

  On the other hand, when trying to read data by holding the card 8 over the pedometer 1 placed on a desk or the like, since the posture of the pedometer 1 is stable, the transmission waveform of the 3D acceleration sensor 11 of the pedometer 1 is As shown in FIG. 6A, both the XYZ axes are flat along the base line.

  When the card 8 is brought into contact with the pedometer 1 in this state, a change in acceleration is simultaneously observed on the XYZ axes (five contact in FIG. 6 (a)). The change in acceleration differs depending on the direction in which the card 8 abuts, and there is an axis that changes the most. Thus, after the flat waveform substantially along the base line lasts for the predetermined time t1, the pedometer 1 is sent to the CPU 10 when the acceleration related to any of the XYZ axes exceeds the threshold set for that axis. It is determined that it is in the reading state, and the pedometer 1 is set to the reader mode (FIG. 6 (B)). At the same time, the device-side loop antenna 15 is energized through the R / WIC 12. As a result, the card-side loop antenna is excited, the data storage communication IC 19 is activated, and communication is performed with the pedometer 1 side using the carrier radio wave as a medium. And the data in the card | curd 8 is scanned by the function as the apparatus side of the pedometer 1, and data are acquired by the apparatus side. Then, it is processed through the CPU 10 and displayed on the display device 14 in a readable state.

  The scan standby state in which scanning is possible is maintained by the timer for the set predetermined time t2, and thereafter the energization of the device side loop antenna is cut off. Therefore, the data on the card 8 can be read any number of times during the predetermined time t2.

  In some cases, the user may hold the pedometer 1 and hold it over the card 8 to read the data on the card 8. In this case, for example, the case 2 is held by being rotated around a side parallel to the Y axis, and FIG. 7 shows a transmission waveform at that time. That is, with respect to the X axis, since the rotation axis is parallel to the Y axis, there is almost no change and it remains along the base line. A stable state is reached, and the Z-axis is in a stable state at that position after a positive change.

In this case, there is a portion that lasts for more than time (t1) as a time when all three axes are stable, in other words, a time when there is no change in acceleration. After this time (t1) has elapsed, the pedometer 1 in the leader mode is in a scan standby state. It becomes. The scan standby state lasts for the set time (t2) and ends. However, if the card 8 is brought into contact with the pedometer 1 or the pedometer 1 is brought into contact with the card 8 during this period, either of the XYZ axes is assumed. An acceleration change occurs, and the transmission waveform from the 3D acceleration sensor 11 changes. Then, when the magnitude of the change exceeds a set threshold, the pedometer 1 in the reader mode is in a read state, and as described above, the data storage communication IC 19 of the card 8 is activated and the pedometer 1 Communication with the card 8 is started, and data on the card 8 is read to the pedometer 1 side.

  The embodiment has been described above. When determining from the transmission waveform of the 3D acceleration sensor 11 that the pedometer as the device is in the reading posture, the pattern of the transmission waveform adopted as the reading posture is stable on the desk or parallel to the Y axis as described above. Various postures can be envisaged as well as a state of rotation about a particular axis. However, in any case, the pedometer in the read mode determines the stable time of the set time (t1) and enters the scan standby state, and continues in the scan standby state (set time (t2)). ), When the card 8 is brought into contact with the pedometer 1, the reading state is entered, and the data of the card 8 is scanned and read to the pedometer 1 side.

DESCRIPTION OF SYMBOLS 1 Pedometer 2 Case 3 Function button 4 Display part 5 Reading button 6 Switching button 7 Memory button 8 Non-contact passive IC guide 9 Control part 10 CPU
11 3D acceleration sensor 12 R / WIC
13 Operation button signal input unit 14 Display device 15 Equipment side loop antenna 16 Vibrator 17 Coin battery 18 Card side loop antenna 19 Data storage communication antenna

Claims (3)

  A function as a card reader corresponding to a card having a card-side loop antenna and a data storage communication IC is added to a portable electronic device having a 3D acceleration sensor, a data processing determination means, and a display means for reading and displaying data. The data processing determination means of the electronic device can be switched between a normal device mode and a reader mode. In the reader mode, the electronic device is automatically set to a read state using waveform information from a 3D acceleration sensor provided in the electronic device. The data content acquired from the data storage communication IC of the contactless passive card is displayed in a readable manner on the display device of the electronic device, and the read state is specified when the electronic device is in a stationary state. It is determined that the waveform has continued for a set period of time, and the IC card reading is characterized. Take display device.   The waveform information from the 3D acceleration sensor that is determined to automatically shift to the lead state is a combination of an XYZ triaxial acceleration change pattern related to the attitude of the electronic device and a subsequent baseline state duration. Item 4. The IC card reading display device according to Item 1. The IC card reading and displaying apparatus according to claim 1, wherein the electronic device is a portable pedometer.

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