JP2019057834A - Portable radio communication device, information identification device using portable radio communication device, and communication system - Google Patents

Abstract

To provide a portable radio communication device which allows for identification of the stored information, front and back, and the information of rotation direction.SOLUTION: A portable radio communication device includes a first antenna arranged in loop, multiple second antennas electrically connected with the first antenna, and provided around the first antenna, an IC chip electrically connected with the first and second antennas, and a magnet placed closely to at least one of the first and second antennas. The second antennas and the magnet are provided on a plane where the first antenna is placed, and the second antennas are placed orthogonally to the plane.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portable wireless communication device, an information identification device, and a communication system.

  In recent years, information transmission methods using non-contact short-range communication technology have spread dramatically and have been used in various fields. In the non-contact short-range communication, a portable wireless communication device having a basic structure of a semiconductor element on which an integrated circuit is mounted and an antenna is used. Electric power is induced in the antenna by electromagnetic induction by a reader / writer or radio waves, thereby driving an integrated circuit (IC) chip including various elements not having a power source. The IC chip performs various processes such as reading of information embedded in the IC chip, writing of information into the IC chip, generation and transmission of instructions, and reception of instructions from the reader / writer. Such a wireless communication apparatus is generally called RFID (Radio Frequency Identification), but various names are given depending on its shape and application. For example, it is also called an IC tag, a wireless tag, an RF tag, an IC card, or the like.

  Due to the diversity of information stored and the excellent portability of wireless communication devices themselves, wireless communication devices are widely used as means for product management, personal identification, security measures, electronic tickets, game cards, commercial transaction approval, etc. It's being used. For example, Patent Document 1 discloses a communication system using a portable wireless communication device.

JP 2013-214157 A

  For example, among non-contact information media (chips, cards, coins, etc.), information inside the non-contact information medium can be acquired by performing wireless communication as described above. On the other hand, in order to obtain information outside the non-contact information medium (specifically, information on the front or back side of the non-contact information medium and information on the rotation angle), other methods such as image recognition are used. There was a need to identify.

  In view of the above problems, an object of the present invention is to provide a portable wireless communication device that enables identification of stored information, front and back information, and rotation direction information.

  According to one embodiment of the present invention, a first antenna arranged in a loop shape, a second antenna electrically connected to the first antenna and provided around the first antenna, An IC chip electrically connected to the first antenna and the second antenna, and a magnet disposed in the vicinity of at least one of the first antenna and the second antenna, the second antenna and A portable radio communication device is provided in which the magnet is provided on a plane on which the first antenna is arranged, and the second antenna is arranged orthogonal to the plane.

  In the portable wireless communication device, the size of the second antenna may be smaller than that of the first antenna.

  In the portable wireless communication device, the number of turns of the second antenna may be larger than the number of turns of the first antenna.

  In the portable wireless communication device, the portable wireless communication device has a first surface and a second surface opposite to the first surface in a cross-sectional view, the first surface side magnetic force, and the second surface. It may be different from the magnetic force on the side.

  In the portable wireless communication device, two or more magnets may be arranged.

  In the portable wireless communication device, the magnet may be disposed inside the second antenna.

  According to one embodiment of the present invention, an information identification device including the portable wireless communication device, a reader / writer, and a magnetic sensor is provided.

  The information identification apparatus may further include a proximity sensor.

  According to one embodiment of the present invention, the portable wireless communication device, the first information identifying unit for identifying the first information transmitted from the portable wireless communication device, and the front and back for identifying the front and back of the portable wireless communication device An input device including: an identification unit; a rotation identification unit that identifies a rotation direction of the portable wireless communication device; a second information generation unit that generates second information based on the first information; and a transmission unit that transmits second information. And an output device including an output unit that outputs a signal based on the received second information.

It is a perspective view of the information identification device of one embodiment of the present invention. It is the upper side figure and sectional drawing of the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is a schematic diagram which shows the magnetic force line in the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is a schematic diagram which shows the magnetic force line in the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. 1 is a block diagram of a portable wireless communication device and a reader / writer according to an embodiment of the present invention. It is a block diagram of the magnetic sensor of one Embodiment of this invention. It is sectional drawing of the portable radio | wireless communication apparatus and reader / writer of one Embodiment of this invention. It is sectional drawing which shows the drive state of the portable radio | wireless communication apparatus and reader / writer of one Embodiment of this invention. It is sectional drawing which shows the drive state of the portable radio | wireless communication apparatus and reader / writer of one Embodiment of this invention. It is sectional drawing which shows the drive state of the portable radio | wireless communication apparatus and magnetic sensor of one Embodiment of this invention. It is the upper side figure and sectional drawing which show the modification of the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is the upper side figure and sectional drawing which show the modification of the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is the upper side figure and sectional drawing which show the modification of the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is the upper side figure and sectional drawing which show the modification of the antenna part of the portable radio | wireless communication apparatus of one Embodiment of this invention. 1 is a perspective view of a communication system according to an embodiment of the present invention. It is a communication method of the communication system of one Embodiment of this invention. It is a functional block diagram of the communication system of one Embodiment of this invention. It is a specific example of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is a specific example of the portable radio | wireless communication apparatus of one Embodiment of this invention. It is a specific example of the portable radio | wireless communication apparatus of one Embodiment of this invention.

  Hereinafter, embodiments of the invention disclosed in the present application will be described with reference to the drawings. However, the present invention can be implemented in various forms without departing from the gist thereof, and is not construed as being limited to the description of the embodiments exemplified below.

  Note that in the drawings referred to in the present embodiment, the same portions or portions having similar functions are denoted by the same reference symbols or similar reference symbols (symbols in which numbers such as -1, -2 etc. are added after numbers), The repeated description may be omitted. In addition, the dimensional ratio in the drawing may be different from the actual ratio for convenience of explanation, or a part of the configuration may be omitted from the drawing.

<First Embodiment>
Hereinafter, a portable wireless communication device (hereinafter referred to as an IC tag) and an information identification device including an IC tag according to an embodiment of the present invention will be described.

  FIG. 1 is a schematic diagram of an information identification device 500. The information identification device 500 includes an IC tag 100, a reader / writer 300 (reader / writer 300-1 and reader / writer 300-2), and a magnetic sensor 400. Note that the reader / writer 300-1 and the reader / writer 300-2 will be described as the reader / writer 300 when it is not necessary to distinguish between them.

(1-1. Configuration of IC tag)
As shown in FIG. 1, the IC tag 100 includes an IC chip 110, an antenna unit 130, a support unit 140, and a magnet 170. The IC chip 110, the antenna unit 130, and the magnet 170 are provided on the surface or inside of the support unit 140. The IC chip 110 and the antenna unit 130 are electrically connected.

  The IC chip 110 is configured to generate a signal in accordance with a command from a reader / writer 300 (described later). The signal is transmitted to the reader / writer 300 by the antenna unit 130.

  The support unit 140 has a function of supporting the IC chip 110, the antenna unit 130, and the magnet 170. For the support portion 140, a material such as polyethylene terephthalate (PET), polyvinyl chloride (PVC), or paper is used. The support part 140 has a first surface 140A and a second surface 140B (described in FIG. 2B described later). The second surface 140B is a surface provided on the opposite side of the first surface 140A. The thickness of the support part 140 is appropriately selected between several hundred μm to several cm according to the purpose.

(1-2. Configuration of antenna unit and magnet)
The antenna unit 130 includes a first antenna 131 and a second antenna 133. The first antenna 131 and the second antenna 133 are electromagnetic induction type antennas and are also called loop antennas. An electromotive force (voltage) having a magnitude corresponding to a change in magnetic flux density passing through a region surrounded by the first antenna 131 and the second antenna 133 is generated in the antenna unit 130. This electromotive force is given to the IC chip 110, and the IC chip 110 is driven. The antenna unit 130 is configured to resonate in a frequency band of, for example, a short wave (HF) or an ultra-high frequency (UHF). Specifically, the short wave corresponds to a frequency band of 13.56 MHz. The ultra high frequency wave corresponds to a frequency band of 860 MHz to 960 MHz.

  The first antenna 131 and the second antenna 133 are made of a magnetic material that is a magnetic conductor. For example, iron (Fe) is used as the magnetic conductor. Note that although iron is used for the first antenna 131 and the second antenna 133, the present invention is not limited to this. For example, the first antenna 131 and the second antenna 133 may include nickel (Ni), cobalt (Co), ferrite, and the like. The magnetic conductor may be a simple substance or an alloy. Further, the magnetic conductor may contain boron. The first antenna 131 and the second antenna 133 are not limited to magnetic materials, and materials having low resistivity such as aluminum, silver, and gold, shape memory alloys such as titanium-nickel alloy, and stainless steel are used. May be.

  The magnet 170 has two poles (magnetic poles) and has a function of generating a bipolar magnetic field. The magnet 170 is disposed near at least one of the first antenna 131 and the second antenna 133. As shown in FIG. 1, two magnets 170 are disposed, for example, inside the first antenna 131. Of the magnets 170, the magnet 170N is arranged with the north pole facing upward. The magnet 170S is disposed with the south pole facing upward. The magnet 170 is made of a hard magnetic material having high coercive force such as ferrite.

  The magnet 170 includes not only ferrite but also ferromagnetic materials such as iron and cobalt, as well as ferrite magnets, neodymium iron boron alloys, aluminum nickel cobalt alloys (alnico), samarium cobalt alloys, iron platinum alloys, cobalt platinum, and the like. A hard magnetic material may be used. A hard magnetic material is desirable as a magnet material because the direction of the magnetic pole can be fixed in a specific direction.

  FIG. 2A is a top view of the antenna portion 130. FIG. 2B is a cross-sectional view between the top views A1-A2 of the antenna unit 130. FIG.

  As shown in FIGS. 2A and 2B, the first antenna 131 is arranged in a loop. Note that the first antenna 131 is not limited to the shape illustrated in FIG. A plurality of second antennas 133 are arranged around the first antenna 131. In this example, six second antennas 133 are arranged at equal intervals outside the first antenna 131. The second antenna 133 is smaller than the first antenna 131. The first antenna 131 and the second antenna 133 are electrically connected. In this example, the first antenna 131 and the plurality of second antennas 133 are configured by processing and molding one wiring (specifically, configured as a single stroke). At this time, a portion connecting one of the second antennas 133 (second antenna 133A) and the other one of the second antennas (second antenna 133B) becomes the first antenna 131. With this structure, an induced current flows through the first antenna 131 due to the magnetic field from the reader / writer 300. Further, this induced current flows to the second antenna 133 connected to the first antenna 131, and a magnetic field is generated from the second antenna 133.

  As shown in FIG. 2B, the center 133C of the second antenna 133 and the magnet 170 are provided on a plane 131S on which the first antenna 131 is disposed. The second antenna 133 is disposed orthogonal to the plane 131S of the first antenna 131. With this arrangement, although details will be described later, a greater effect can be obtained in providing a magnetic force difference between the first surface 140A side and the second surface 140B side of the support portion 140.

  Note that the second antenna 133 may be arranged without being limited to the above configuration. For example, the center 133C of the second antenna 133 and the magnet 170 may be arranged away from the plane 131S. Further, the second antenna 133 may be disposed substantially orthogonal to the plane 131S of the first antenna 131 due to the influence of the manufacturing process or the like. In this case, “substantially orthogonal” refers to a state in which the surface is inclined upward or downward by 1 to 20 degrees from the orthogonal state. In addition, the second antenna 133 may be disposed locally instead of necessarily at regular intervals.

  As shown in FIGS. 2A and 2B, the second antenna 133 is smaller than the first antenna 131. In this case, in order to increase the magnetic field (magnetic force) of the second antenna 133, it is desirable that the number of turns of the second antenna 133 is larger than the number of turns of the first antenna 131. Thereby, the magnetic field (magnetic force) in the second antenna 133 is increased.

  FIG. 3 is a schematic diagram showing lines of magnetic force in the antenna unit 130. As shown in FIG. 3, in the region R1 above the plane 131S, the magnetic lines of force M131 of the first antenna 131 are directed downward, while the magnetic lines of force M133 of the second antenna 133 are directed upward. ing. Therefore, the magnetic field lines M131 of the first antenna 131 and the magnetic field lines M133 of the second antenna 133 interfere in the region R1. Accordingly, the magnetic field lines M131 of the first antenna 131 are obstructed in the region R1. On the other hand, in the region R2 below the plane 131S, the magnetic force lines M131 of the first antenna 131 and the magnetic force lines M133 of the second antenna 133 are both directed downward. Accordingly, the magnetic field lines M131 of the first antenna 131 are not disturbed in the region R2. That is, as shown in FIG. 4, in the antenna unit 130, the magnetic characteristics above the plane 131 </ b> S, that is, the first surface 140 </ b> A side of the support portion 140, and below the plane 131 </ b> S, i. It can be said that the magnetic properties are asymmetric and different.

(1-3. Configuration of IC chip)
Next, FIG. 5A illustrates a configuration example of the IC chip 110.

  The IC chip 110 can include a voltage limit circuit 111, a rectifier circuit 113, a demodulation circuit 115, a modulation circuit 117, a control circuit 119, a storage unit 121, a resistor 123, and the like as main components.

  The voltage limit circuit 111 has a function of protecting the IC chip 110 from a voltage input when an excessive voltage is induced in the antenna unit 130. When an excessive voltage is induced, an unnecessary portion of the generated current is converted into heat using the resistor 123 and released to the outside.

  The rectifier circuit 113 has a function of converting an alternating current induced in the antenna unit 130 into a direct current. The power supply voltage that has been converted to a direct current by the rectifier circuit 113 is supplied to all circuits constituting the IC tag 100.

  The demodulation circuit 115 has a function of converting information (signal) superimposed on a carrier wave input from the reader / writer 300 into a signal sequence of 1 or 0.

  The control circuit 119 has functions for controlling transmission / reception between the reader / writer 300, interpretation of commands, reading of information from the storage unit 121, writing to the storage unit 121, and the like. The control circuit 119 includes various logic circuits. For the control circuit 119, a CPU (Central Processing Unit) or the like may be used.

  The control circuit 119 generates a response to the command received from the reader / writer 300 and sends this data to the modulation circuit 117. The modulation circuit 117 modulates a carrier wave based on data to be transmitted, and generates a transmission signal. The generated signal is transmitted from the antenna unit 130 as a carrier wave.

  The storage unit 121 includes a memory element for storing data. The storage unit 121 stores unique information and various rewritable information.

(1-4. Configuration of reader / writer)
FIG. 5B shows a configuration example of the reader / writer 300. The reader / writer 300 includes a control circuit 310, a storage unit 313, a modulation circuit 320, a transmission circuit 330, an antenna 340, a reception circuit 350, a demodulation circuit 360, an oscillation circuit 370, and the like.

  The control circuit 310 controls the reader / writer 300 as a whole, interprets received data and commands, writes data to the storage unit 313, reads data from the storage unit 313, and responds to the received command. And so on.

  The modulation circuit 320 modulates the command or data sent from the control circuit 310 on the carrier wave generated by the oscillation circuit 370. The modulated carrier wave is sent to the transmission circuit 330, where signal amplification, unnecessary frequency attenuation, and the like are performed to extract only the frequency to be transmitted. The signal processed in this way is transmitted to the IC tag 100 via the antenna 340.

  The receiving circuit 350 has a function of receiving a carrier wave transmitted from the IC tag 100 received by the antenna 340. The receiving circuit 350 removes noise contained in the carrier wave and amplifies a necessary signal. The amplified signal is sent to the demodulation circuit 360 and demodulated into necessary instructions and data.

  The oscillation circuit 370 has a function of generating a carrier wave necessary for communication. For example, a high frequency of 13.56 MHz is generated as the carrier wave.

(1-5. Configuration of magnetic sensor)
FIG. 6 shows a configuration example of the magnetic sensor 400. The magnetic sensor 400 includes a detection element 410, a filter circuit 420, a control circuit 430, a storage unit 440, and the like.

  The detection element 410 has a function of detecting the magnetic field of the magnet 170. As the detection element 410, for example, a Hall element is used. The Hall element is a sensing element that utilizes the Hall effect that generates a voltage perpendicular to the current direction and the magnetic field direction when a magnetic field is applied perpendicularly to the solid surface in a state where an electric current is passed through the solid. The sensing element may be a magnetoresistive (MR) element in addition to the Hall element.

  The filter circuit 420 has a function of cutting noise from the voltage signal obtained by the detection element. As the filter circuit 420, a low-pass filter including at least one of a resistance element, a capacitance element, and an inductor is used.

  The control circuit 430 has a function of writing information such as a voltage signal obtained through the filter circuit 420 to the storage unit 440 or controlling output to the outside. The control circuit 430 is composed of various logic circuits. A CPU or the like is used for the control circuit 430.

(1-6. Operation of Information Identification Device 500)
Next, the operation of the information identification device 500 will be described. FIG. 7 is a cross-sectional view of the information identification device 500. The structure 150 is provided on the first surface of the IC tag 100 (the first surface 140A of the support portion 140). The structure 160 is provided on the second surface of the IC tag 100 (the second surface 140B of the support portion 140). The structure 150 and the structure 160 have irregularities or patterns, and have different visibility. The magnetic sensor 400, the reader / writer 300-1, and the reader / writer 300-2 are provided on the second surface side of the IC tag 100.

  In the reader / writer 300-1 and the reader / writer 300-2, a magnetic field is generated in the same direction. Unlike the distance L1 between the IC tag 100 and the reader / writer 300-1, and the distance L2 between the IC tag 100 and the reader / writer 300-2, the distance L2 is longer than the distance L1. That is, it can be said that the reader / writer 300-1 is arranged closer to the IC tag 100 than the reader / writer 300-2. As a result, a difference occurs between the reader / writer 300-1 and the reader / writer 300-2 in transmission / reception with the IC tag 100.

  A magnetic field generated by the reader / writer 300-1 and the reader / writer 300-2 may affect the magnetic sensor 400. In this case, the magnetic sensor 400 may be provided with a filter circuit (for example, a low-pass filter) to remove the influence of the magnetic field generated by the reader / writer 300-1 and the reader / writer 300-2 around the magnetic sensor 400.

  8 and 9 are cross-sectional views for explaining an information identification method of the IC tag 100 when the reader / writer 300-1 and the reader / writer 300-2 are driven.

  As shown in FIG. 8, the reader / writer 300-1 or the reader / writer 300-2 is driven with the second surface of the IC tag 100 (the second surface 140 </ b> B of the support unit 140) facing down. When the reader / writer 300-1 or the reader / writer 300-2 is driven, the carrier wave 380 is sent from the reader / writer 300-1 or the reader / writer 300-2 to the IC tag 100. At this time, magnetic force lines M131B are generated in the IC tag 100. As shown in FIG. 4, the magnetic field lines M131B generate a stronger magnetic field on the second surface side than on the first surface side of the IC tag 100. For example, the reader / writer 300 (reader / writer 300-1) disposed near the IC tag 100 is driven. At this time, it is identified that transmission / reception between the IC tag 100 and the reader / writer 300-1 is possible. Next, the reader / writer 300 (reader / writer 300-2) arranged away from the IC tag 100 is driven. At this time, it is identified that transmission / reception between the IC tag 100 and the reader / writer 300-2 is possible. From the above, it is identified that the second surface of the IC tag 100 is disposed on the lower side together with the information stored in the IC tag 100 (the IC tag 100 is disposed in the state of the table).

  On the other hand, as shown in FIG. 9, when the reader / writer 300-1 or the reader / writer 300-2 is driven with the first surface 140A of the IC tag 100 facing down, the magnetic field lines are weaker than the magnetic field lines M131B. M131A is generated. At this time, in FIG. 9, transmission / reception with the reader / writer 300-1 disposed near the IC tag 100 is possible, but transmission / reception with the reader / writer 300-2 disposed away from the IC tag 100 is performed. Can not. Therefore, it is identified that the first surface 140A is disposed on the lower side together with the information stored in the IC tag 100 (the IC tag 100 is disposed in the reverse state).

  In addition, after identifying the front and back of the IC tag 100, the presence / absence confirmation of the IC tag 100 may be performed using the reader / writer 300-1 close to the IC tag 100. Thereby, it is not necessary to perform the front / back determination of the IC tag 100 many times, and the identification (reaction) speed can be increased. When the reader / writer 300-1 cannot perform transmission / reception, it is identified that the IC tag 100 is not present (extracted). At this time, the identification of the IC tag 100 is performed again from the beginning.

  FIG. 10 is a cross-sectional view for explaining an information identification method of the IC tag 100 when the magnetic sensor 400 is driven.

  As shown in FIG. 10, the magnetic sensor 400 detects a magnetic field M <b> 170 generated from a magnet 170 built in the IC tag 100. At this time, the magnetic sensor 400 detects a different signal (voltage) according to the positional relationship of the magnet 170. Thereby, the magnetic sensor 400 can identify the rotation direction of the IC tag 100 from the reference position.

  As described above, by using this embodiment, not only information stored in the IC tag 100 but also information on the first and second surfaces of the IC tag 100 and further information on the rotation direction of the IC tag 100 are acquired at the same time. Can do. Further, conventionally, in order to identify the information on the front and back of the medium and the information on the rotation direction, it is necessary to use another method such as image recognition, but by using this embodiment, information on the front and back of the medium and Information on the rotation direction can be easily obtained.

  Information identifying apparatus 500 may further include a proximity sensor. As the proximity sensor, an ultrasonic sensor using ultrasonic waves may be used in addition to a photodiode using light. Further, proximity detection may be performed by the magnetic field of the magnetic sensor 400. By performing proximity detection, information identification can be performed with high accuracy.

  Below, the modification of the portable radio | wireless communication apparatus demonstrated by this embodiment is demonstrated.

(Modification 1)
In the present embodiment, an example in which the two magnets 170 are equally arranged with respect to the center of the first antenna 131 has been described, but the present invention is not limited to this. FIG. 11A is a top view of the antenna portion 130-1, and FIG. 11B is a cross-sectional view between A1-A2 of the antenna portion 130-1. 12A is a top view of the antenna portion 130-2, and FIG. 12B is a cross-sectional view between A1-A2 of the antenna portion 130-2. As shown in FIG. 11A, FIG. 11B, FIG. 12A, and FIG. 12B, for example, one of the two magnets 170 (for example, the magnet 170S) is the first antenna 131. It may be arranged in the center. At this time, the other of the magnets 170 (for example, the magnet 170N) may be inside the first antenna 131 (see FIGS. 11A and 11B) or may be outside (FIG. 12A). And FIG. 12B). Thereby, the rotation direction of the IC tag 100 can be identified by changing the position of the magnet 170N with reference to the position of the magnet 170S.

(Modification 2)
In the present embodiment, an example in which two magnets 170 are arranged on the IC tag 100 has been shown, but the present invention is not limited to this. FIG. 13A is a top view of the antenna portion 130-3, and FIG. 13B is a cross-sectional view between A1-A2 of the antenna portion 130-3. As shown in FIGS. 13A and 13B, three or more magnets 170 may be arranged. By arranging the three magnets 170, the rotation direction of the IC tag 100 can be identified with higher accuracy than when two magnets 170 are arranged.

(Modification 3)
Moreover, in this embodiment, although the example in which the two magnets 170 are arrange | positioned inside the 1st antenna 131 was shown, it is not limited to this. FIG. 14A is a top view of the antenna unit 130-4, and FIG. 14B is a cross-sectional view between A1-A2 of the antenna unit 130-4. As shown in FIGS. 14A and 14B, the two magnets 170 may be disposed inside the second antenna 133. At this time, the magnet 170 can be used as the core of the second antenna 133. Thereby, the magnetic field of the second antenna 133 is strengthened, and the front and back surfaces of the IC tag 100 are identified with higher accuracy.

Second Embodiment
In this embodiment, a communication system using the IC tag described in the first embodiment will be described. The structures and functions of the IC tag, reader / writer, and magnetic sensor described in the first embodiment are used as appropriate. In addition, for the sake of explanation, the functions of the IC tag, reader / writer, and magnetic sensor may be partially added or omitted.

  FIG. 15 is a perspective view of the communication system 800. The communication system 800 includes an IC tag 100, a plate 480, an input device 600, and an output device 700.

  The IC tag 100 is placed on the plate 480 by the user who owns the IC tag 100. The plate 480 has a lattice pattern. The IC tag 100 can be freely moved by the user on the plate 480. Specifically, the IC tag 100 may be arranged with the front surface (the first surface 140A of the support portion 140 in FIG. 7) facing upward, or the back surface (the first surface 140B of the support portion 140 in FIG. 7). It may be arranged on the upper side. Further, the IC tag 100 may be rotated by the user at the same place.

  The input device 600 includes the reader / writer 300 and the magnetic sensor 400 described in the first embodiment. The input device 600 has the same shape as the plate 480 as shown in FIG. At this time, in the input device 600, the reader / writer 300 and the magnetic sensor 400 may be arranged separately for each lattice (block). Thereby, the information of the IC tag 100 when arranged in each block is input to the input device 600.

  The output device 700 includes a communication unit 701, a control unit 703, a storage unit 705, and a video output unit 707. The communication unit 701 receives information (signal) acquired by the input device 600 using the wiring 695 or the like. The control unit 703 performs control such as converting the signal received by the communication unit 701 into a signal that can be output, and outputting and storing the converted signal. The signal is stored in the storage unit 705, but may be stored using an external server. The video output unit 707 outputs a signal obtained to the outside as a video. In FIG. 15, a video output unit 707 outputs a signal as a video. Note that the video output unit 707 may output audio and other information in addition to the video.

  FIG. 16 is a flowchart for explaining a communication method in the communication system 800.

  First, when the input device 600 detects that the IC tag 100 is close (S1050), a magnetic field is generated from the antenna (antenna 340 in FIG. 5B) (S1100). The magnetic field is transmitted from the input device 600 to the IC tag 100 as a carrier wave. Note that information held by the reader / writer 300 may be included in the magnetic field.

  Next, when the IC tag 100 receives a carrier wave from the input device 600, the IC tag 100 is activated by an induced current generated by electromagnetic induction (S2000). The activated IC tag 100 transmits identification information (sometimes referred to as first information) of the IC tag 100 stored in the storage unit (the storage unit 121 in FIG. 5A) to the input device 600 ( S3000).

  Next, the input device 600 performs information identification processing of the IC tag 100 (S4000).

  In the information identification process, the input device 600 first identifies the first information transmitted from the IC tag 100 (S4100). Thereby, the type of the IC tag 100 arranged on the plate 480 is specified, and the presence / absence of the IC tag 100 is identified (S4200). In addition, the input device 600 includes a block having the same shape as the lattice provided on the plate 480 as described above. Since the reader / writer 300 is arranged in each block, it is possible to identify in which block the IC tag 100 is arranged. Even if the reader / writer 300 is not arranged in each block, the reader / writer 300 is not necessarily arranged for each block if the position of the IC tag 100 can be grasped. When the position of the IC tag 100 is changed, the presence / absence identification may be performed again.

  Next, the front / back identification processing of the IC tag 100 is performed (S4300). Thereby, it is identified which of the front surface and the back surface of the IC tag 100 faces upward (user side).

  Next, the identification process of the rotation direction of the IC tag 100 is performed (S4400). The rotation direction identification processing is performed using the magnetic sensor 400. The magnetic sensor 400 is arranged in each block together with the reader / writer 300, so that the rotation direction of the IC tag 100 can be identified with higher accuracy.

  Based on the information obtained above, the input device 600 generates information (second information) that combines position information, front / back information, and rotation direction information based on the information built in the IC tag 100 ( S5000). The generated second information is transmitted from the input device 600 to the output device 700 (S6000).

  The output device 700 converts the received second information (signal) into a signal that can be output, and outputs the information (S7000). If the second information (signal) can be output as it is, the signal conversion need not be performed.

  With the above communication method, the information of the IC tag 100 is output by the output device 700. In the communication method, the information of the IC tag 100 can be acquired without performing image recognition. When image recognition is performed, output may be delayed because analysis after acquiring an image takes time. However, in the case of the communication method described above, since image recognition is not necessary, quick response (output) is possible.

  In the case of the above communication method, the responding reader / writer 300 is changed by changing the position of the IC tag 100. That is, the IC tag 100 can function as a switch.

  FIG. 17 is a functional block diagram of the communication system 800 related to the processing flow.

  17, the communication system 800 includes an IC tag 100 including an activation unit 101 and a first information transmission unit 102, a proximity detection unit 605, a magnetic field generation unit 610, a first information identification unit 620, a front / back identification unit 630, and a rotation identification unit. 640, an input device 600 including a second information generation unit 650 and a transmission unit 660, and an output device 700 including a reception unit 710 and an output unit 720.

  In the IC tag 100, the activation unit 101 has a function of receiving and activating a magnetic field from the input device. Therefore, the activation unit 101 is a function that realizes the process of S2000 in the communication process.

  The first information transmission unit 102 has a function of transmitting information (first information) of the IC tag 100. Therefore, the first information transmission unit 102 is a function that realizes the process of S3000 in the communication process.

  In the input device 600, the magnetic field generation unit 610 has a function of generating and transmitting a magnetic field to the IC tag 100 in the vicinity. Therefore, the magnetic field generation unit 610 is a function that realizes the processing of S1100 in the communication processing described above.

  The first information identification unit 620 has a function of identifying first information transmitted from the IC tag 100. Therefore, the first information identification unit 620 is a function that realizes the processing of S4100 in the communication processing described above.

  The front / back identification unit 630 has a function of identifying the front and back of the IC tag 100. Therefore, the front / back identification unit 630 is a function that realizes the processing of S4300 in the communication processing described above.

  The rotation identification unit 640 has a function of identifying the rotation direction of the IC tag 100. Therefore, the rotation identification unit 640 is a function that realizes the process of S4400 in the communication process.

  The second information generation unit 650 has a function of generating information (second information) combining the position information, the front and back information, and the rotation direction based on the first information incorporated in the IC tag 100. Therefore, the 2nd information generation part 650 is a function which implement | achieves the process of S5000 in said communication process.

  The transmission unit 660 has a function of transmitting the second information of the IC tag 100 to the output device 700. Therefore, the transmission unit 660 is a function that realizes the processing of S6000 in the communication processing described above.

  The output unit 720 has a function of outputting information (signal) based on the second information of the IC tag 100 received by the reception unit 710 from the transmission unit 660 of the input device 600. Therefore, the output unit 720 is a function that realizes the process of S7000 in the communication process.

  Note that in the communication system 800, the proximity detection unit 605 is not necessarily provided. The proximity detection unit 605 has a function of detecting that the IC tag 100 has approached the input device 600. The proximity detection unit 605 is a function that realizes the process of S1050 in the communication process.

  In the communication system 800, the presence / absence identifying unit 625 is not necessarily provided. The presence / absence identifying unit 625 has a function of identifying that the IC tag 100 exists on the plate 480. The presence / absence identifying unit 625 is a function that implements the processing of S4200 in the communication processing described above.

  By using the communication system, it is possible to identify the front / back / rotation direction of the IC tag 100 and to perform communication with a high response speed.

<Third Embodiment>
In the present embodiment, a specific example in which the IC tag 100 described in the first embodiment is mounted will be described.

  18 and 19 are diagrams for explaining a portable medium on which the IC tag 100 is mounted. The IC tag 100 is used in various scenes such as merchandise management, personal identification, security measures, electronic tickets, game cards, and commercial transaction approval. FIG. 18A is a schematic diagram of the playing card 1000. FIG. 18B is a schematic diagram of an ID (Identification) card 2000. FIG. 19A is a schematic diagram of a coin 3000. FIG. 19B is a schematic diagram of the smartphone 4000. FIG. 19C is a schematic diagram of a pedestal 5000 on which dolls are arranged.

  In these media, the IC tag 100 can obtain information on the front and back surfaces of each medium and information on the rotation direction in addition to the stored information via the reader / writer 300 and the magnetic sensor 400.

  The embodiments described above as the embodiments of the present invention can be implemented in appropriate combination as long as they do not contradict each other. Moreover, what the person skilled in the art added, deleted, or changed the design as appropriate based on each embodiment is also included in the scope of the present invention as long as the gist of the present invention is included.

  Of course, other operational effects that are different from the operational effects provided by each of the above-described embodiments are obvious from the description of the present specification or can be easily predicted by those skilled in the art. It is understood that this is brought about by the present invention.

(Modification)
In addition, in 1st Embodiment of this invention, although the IC tag provided in the support body which has the 1st surface and 2nd surface which have a wide area | region compared with the side surface was demonstrated, it is not limited to this. The IC tag 100 may be a hexahedron such as a dice 6000 (see FIG. 20A), a cone 7000 (see FIG. 20B), or a support having a structure such as a polygonal pyramid.

  In the first embodiment of the present invention, the example in which the second antennas 133 are all disposed outside the first antenna 131 has been described. However, the present invention is not limited to this. The second antenna 133 may be provided inside and outside the first antenna 131, respectively. Also, the second antenna 133 provided inside the first antenna 131 and the second antenna 133 provided outside may be the same size or different sizes. Thereby, the magnetic force of the antenna part can be controlled.

  Further, all the second antennas 133 may be provided inside the first antenna 131. Thereby, the area of the antenna unit 130 can be reduced while obtaining the effects of the present invention.

  Further, the first antenna 131 and the second antenna 133 may have a rectangular shape depending on the convenience of manufacturing the antenna portion 130.

  In the first embodiment of the present invention, the example in which the two reader / writers 300 are used when identifying the information on the front and back of the IC tag 100 is shown, but the present invention is not limited to this. For example, the front and back information may be identified by appropriately turning the IC tag 100 upside down.

  In 2nd Embodiment of this invention, although the plate 480 and the input device 600 demonstrated the example each provided separately, it is not limited to this. For example, the input device 600 may be disposed on the back side of the plate 480 (the side on which the IC tag 100 is not disposed).

  DESCRIPTION OF SYMBOLS 100 ... IC tag, 101 ... Start-up part, 102 ... Information transmission part, 110 ... Chip, 111 ... Voltage limit circuit, 113 ... Rectification circuit, 115 ... Demodulation circuit, 117: Modulation circuit, 119: Control circuit, 121: Storage unit, 123: Resistance, 130: Antenna unit, 131: Antenna, 133 ... Antenna, 133C ... Center, 140 ... support unit, 150 ... structure, 160 ... structure, 170 ... magnet, 300 ... reader / writer, 310 ... control circuit, 313 ... storage unit 320, modulation circuit, 330, transmission circuit, 340, antenna, 350, reception circuit, 360, demodulation circuit, 370, oscillation circuit, 380, carrier wave, 400 ..Magnetic sensors, 410 ... Intelligent element 420 ... Filter circuit 430 ... Control circuit 440 ... Storage unit 480 ... Plate 500 ... Information identification device 600 ... Input device 605 ... Proximity Detection unit, 610 ... Magnetic field generation unit, 620 ... Information identification unit, 625 ... Presence / absence identification unit, 630 ... Front / back identification unit, 640 ... Rotation identification unit, 650 ... Information generation unit ,..., Transmission unit, 695, wiring, 700, output device, 701, communication unit, 703, control unit, 705, storage unit, 707, output unit, 710 ... Receiver, 720 ... Output, 800 ... Communication system, 1000 ... Trump, 2000 ... ID (Identification) card, 3000 ... Coin, 4000 ... Smartphone, 5000 · Pedestal doll is placed, 6000 ... dice, 7000 ... cone

Claims (9)

A first antenna arranged in a loop;
A plurality of second antennas electrically connected to the first antenna and provided around the first antenna;
An IC chip electrically connected to the first antenna and the second antenna;
A magnet disposed near at least one of the first antenna and the second antenna;
Including
The second antenna and the magnet are provided on a plane on which the first antenna is arranged, and the second antenna is arranged orthogonal to the plane.
Portable wireless communication device. The second antenna is smaller in size than the first antenna;
The portable wireless communication apparatus according to claim 1. The number of turns of the second antenna is greater than the number of turns of the first antenna.
The portable wireless communication apparatus according to claim 1 or 2. The portable wireless communication device includes:
In cross-sectional view, it has a first surface and a second surface opposite to the first surface,
The magnetic force on the first surface side is different from the magnetic force on the second surface side,
The portable wireless communication apparatus according to any one of claims 1 to 3. Two or more magnets are arranged.
The portable wireless communication apparatus according to any one of claims 1 to 4. The magnet is disposed inside the second antenna;
The portable wireless communication apparatus according to any one of claims 1 to 5.   An information identification device comprising the portable wireless communication device according to any one of claims 1 to 6, a reader / writer, and a magnetic sensor.   The information identification device according to claim 7, further comprising a proximity sensor. A portable wireless communication device according to any one of claims 1 to 6;
A first information identifying unit for identifying first information transmitted from the portable wireless communication device, a front / back identifying unit for identifying the front and back of the portable wireless communication device, and a rotation for identifying the rotation direction of the portable wireless communication device An input device including an identification unit, a second information generation unit that generates second information based on the first information, and a transmission unit that transmits the second information;
An output device including an output unit that outputs a signal based on the received second information;
Including a communication system.

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