JP2007129657A - Wireless response unit system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless response unit system which can remotely instruct the execution of a function possessed by the system, and is suitable for a ubiquitous network. <P>SOLUTION: When a transceiver 4 wireless-acquires a wireless response unit ID from a wireless response unit 3 removably attached to a recording medium 2, a control device 6 refers to a database within a server 8 to recognize a function assigned to that wireless transponder ID and executes the relevant function. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wireless response device system.

  In recent years, construction of a ubiquitous system that connects a wireless terminal to the Internet, acquires real-world information on the network, and provides a remote service has been actively performed. This ubiquitous system is a system in which anyone can access information anytime and anywhere with all computers connected to a network.

  Wireless terminals used in this ubiquitous system include personal computers (PCs) and mobile phones connected via a wireless local area network (LAN), which are relatively large and capable of various information processing. Small ones such as ZigBee (registered trademark) that have a sensing function, or small and thin such as RFID (Radio Frequency Identification) and IC cards that have an ID transmission function that does not have a battery. There are various applications and wireless systems that are tailored to these functions.

  As a conventional example of this wireless system, for example, there is one disclosed in Patent Document 1.

This wireless system communicates wirelessly with a control unit having a clip that is held between recording media such as paper, a RAM that is attached to the clip and stores a clip-specific ID and document data, and a wireless communication unit. And an electronic information display device that obtains the ID and document data from the control unit.
JP 2004-192287 A

  However, according to the conventional wireless system, even if the document data can be acquired in relation to the ID, in order to execute the functions related to the processing of the document data such as printing and mail with respect to the document data, a device such as a PC is started. However, after starting the application program, operations such as function selection and setting are required, and there is a problem that operability is poor.

  Therefore, an object of the present invention is to provide a wireless response device system that can remotely instruct execution of the functions of the system and is suitable for a ubiquitous network.

  In one aspect of the present invention, in order to achieve the above object, a wireless response device that wirelessly transmits a response wave including identification information in response to an interrogation wave received wirelessly, and transmits the interrogation wave to the wireless response device A transmission / reception device that receives the response wave from the wireless response device and acquires the identification information included in the response wave, and a function execution unit that executes a function assigned to the identification information acquired by the transmission / reception device A wireless response device system is provided.

  According to the above wireless response device system, the function assigned to the identification information included in the response wave is transmitted by the function execution unit by causing the wireless response device to transmit the response wave to the transmission / reception device in response to the interrogation wave from the transmission / reception device. Since it is executed, the function of the system can be instructed to be executed remotely.

  The wireless response device is provided between an antenna that transmits and receives the interrogation wave and the response wave, identification information generating means that generates the identification information, and between the antenna and the identification information generating means. It can be set as the structure provided with the impedance conversion part from which an impedance changes according to. According to this configuration, by applying a stimulus to the impedance conversion unit from the outside, the impedance changes and a response wave corresponding to the change in impedance is output.

  The impedance converter includes a variable inductor whose inductance changes according to external force, a variable capacitor whose capacitor changes according to external force, or a variable resistor whose resistance value changes according to external force or external light. Can do.

  The impedance converter may be configured to output the identification information as a multi-value signal according to the amount of change in impedance. Since the identification information is output as a multi-value signal, for example, a function corresponding to the multi-value can be executed.

  The identification information generating means may be configured using a SAW-ID tag, an RF-ID tag, or a delay line.

  The identification information generated by the identification information generation means may correspond to a delay time from when the transmission / reception apparatus generates the interrogation wave until the response wave is received.

  The function execution means stores the function assigned to the identification information together with the identification information, and the function corresponding to the identification information from the storage device based on the identification information acquired by the transmission / reception device And a control device that executes the searched function.

  The said control apparatus can be set as the structure which displays the function allocated to the said identification information on the said display part with the said identification information which the said transmission / reception apparatus acquired.

  The wireless response device can be configured to operate without a power source. According to this configuration, the place where the wireless response device is used is not limited by the power supply place.

  The wireless response device may be configured to be detachably attached to a recording medium. It becomes possible to execute the functions of the system in relation to documents and images recorded on the recording medium.

  The wireless response device may be configured to be attached to a holding member that holds the recording medium. According to this configuration, the wireless response device can be easily attached and detached.

  The recording medium may be configured to be attached with a contactless ID tag that transmits identification information for identifying the recording medium in response to the interrogation wave from the transmission / reception device together with the wireless response device. Even if the wireless response device is detached from the recording medium, the recording medium can be identified by the non-contact ID tag.

The recording medium is attached with a plurality of wireless response devices corresponding to a plurality of recording areas,
The function executing means may be configured to execute the function corresponding to the identification information included in each of the plurality of response waves from the plurality of wireless response devices.

  The function assigned to the identification information is recorded on the recording medium, and the function execution means is an image pick-up section for picking up an area where the function of the recording medium is recorded, and an image picked up by the image pick-up means. To a character recognition unit that recognizes the function, and a control unit that executes the function recognized by the character recognition unit.

  Electronic paper may be used as the recording medium. Thereby, rewriting of a document and an image becomes easy.

  The function execution means may display the function assigned to the identification information together with the identification information acquired by the transmission / reception device on the electronic paper. The person who owns and browses the recording medium can know what function is executed.

  The function execution unit reads out the image data corresponding to the identification information acquired by the transmission / reception apparatus from the storage unit, and stores the read image data. The electronic paper can be displayed. A person who owns and browses the recording medium can view an image corresponding to the identification information.

  The transmission / reception devices are a plurality of transmission / reception devices provided at predetermined positions so that the interrogation wave transmission ranges partially overlap, and the plurality of transmission / reception devices include the identification information and a response indicating the strength of the response wave An intensity signal may be output to the function execution means. According to this configuration, the position of the wireless response device can be specified more accurately.

  The transmission / reception device is configured to identify one wireless response device among the plurality of wireless response devices existing in the interrogation wave transmission range and transmit / receive the interrogation wave and the response wave to / from the identified wireless response device. Can do. According to this configuration, communication errors can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the function which a system has can be remotely instruct | indicated and the radio | wireless response apparatus system suitable for a ubiquitous network can be provided.

[First embodiment]
FIG. 1 shows a schematic configuration of a wireless response device system according to a first embodiment of the present invention. The wireless response device system 1 includes a wireless response device 3 detachably attached to a recording medium 2, a transmission / reception device 4 that wirelessly acquires a wireless response device ID unique to the wireless response device 3 from the wireless response device 3, and transmission / reception The wireless response device ID is received from the device 4 via the communication medium 5, and the function assigned to the ID is recognized by referring to the database in the server 8 via the network 7 based on the ID. And a control device 6 serving as a function execution unit configured by a personal computer to be executed. In addition to the server 8, a printer 9 and various devices (not shown) necessary for executing the function are connected to the network 7.

The wireless response device 3 is a passive type that does not include a battery, and can transmit and receive the interrogation wave S ₁ and the response wave S ₂ to and from the transmission / reception device 4 using electromagnetic coupling, electromagnetic induction, or microwaves. In the embodiment, a microwave having a long communication distance is used. As a method of attaching the wireless response device 3 to the recording medium 2, various methods such as a double-sided adhesive tape, a fastener combining a hook and a loop can be used.

  As the communication medium 5, a communication cable, ZigBee (registered trademark), Bluetooth (registered trademark), a wireless LAN (local area network), or the like can be used. In this embodiment, a communication cable is used. The network 7 can be a LAN, a wireless LAN, the Internet, or the like.

  FIG. 2 is a block diagram of the wireless response device system of FIG.

The wireless response device 3 wirelessly receives the interrogation wave S ₁ from the transmission / reception device 4 and transmits the response wave S ₂ , the impedance conversion unit 31A whose impedance is changed by a pressing operation as an external stimulus, When the SAW-ID tag 32 is provided as an identification information generating unit that generates elastic waves, and the pressing operation is performed on the impedance conversion unit 31A, the antenna 30 and the SAW-ID tag 32 are in an impedance matching state. and it outputs a response wave S ₂ from the antenna 30, when not pressed is the relative impedance conversion unit 31A, an antenna 30 and SAW-ID tag 32 and the impedance response wave S from the antenna 30 becomes mismatched state Operates so that ₂ is not output.

The transmission / reception device 4 includes an antenna 40, a transmission unit 41 that transmits the interrogation wave S ₁ to the wireless response device 3 via the antenna 40, and a reception unit that receives the response wave S ₂ from the wireless response device 3 via the antenna 40. 42, a storage unit 44 for storing a wireless response device ID corresponding to a delay time (identification information) from when the interrogation wave S ₁ is transmitted until the response wave S ₂ is received, and a delay time using a timer 45 , And the wireless response device ID corresponding to the delay time is read from the storage unit 44 as shown in FIG. 4 to be described later, and the wireless response device ID is transmitted to the control device 6 via the wireless communication unit 46 and the communication medium 5. When receiving the response wave S ₂ from the wireless response device 3, the control unit 43 for transmitting and a sound generating unit 47 for generating sound indicating the response wave S ₂ are provided.

The sound generation unit 47 includes an amplifier, a speaker, and the like. When the response wave S ₂ can be received from the wireless response device 3, the sound generation unit 47 outputs a buzzer sound indicating the sound, such as “response wave has been received”, to the control unit 43. Is output from the speaker under the control of. In addition, instead of the sound or together with the sound, the light may be displayed visually using a light source such as an LED or a liquid crystal panel. Further, electronic paper may be used as the recording medium 2, and the fact that the response wave has been received may be displayed on the display unit of the electronic paper.

  The control device 6 includes a communication unit 60 connected to the network 7, an input unit 61 such as a keyboard and a mouse, a display unit 62 such as a liquid crystal display, and a function for executing a function assigned to the wireless response device ID. A storage unit 63 that stores various programs including an execution program and various data, and a control unit 64 that controls each unit of the control device 6 based on the program are provided.

  The server 8 includes a communication unit 80 connected to the network 7, a control unit 81 that performs processing such as registration and data transfer, and a database 82 in which various data are registered. In the database 82, a function (see FIG. 5 to be described later) assigned to the ID of the wireless response device ID, document data recorded on the recording medium 2, information related to the document data, and the like are registered in the database 82. ing.

  The printer 9 includes a communication unit 90 connected to the network 7 and a printing unit 91 that prints document data or the like on a sheet. The printing unit 91 can use various methods such as an electrophotographic method, an inkjet method, and a thermal transfer method.

(Wireless response device)
FIG. 3 shows a detailed configuration of the wireless response device 3, wherein (a) shows an impedance mismatching state and (b) shows an impedance matching state.

  The SAW-ID tag 32 includes a piezoelectric substrate 320 that transmits a surface acoustic wave 323, an IDT (Inter Digit Transducer, comb-shaped electrode) 321 that is formed on the piezoelectric substrate 320 and excites the surface acoustic wave 323, and a piezoelectric body. A SAW reflector 322 is formed on the substrate 320 at a predetermined distance from the IDT 321 and reflects the surface acoustic wave 323 excited by the IDT 321.

  The impedance converter 31A includes an air core coil 310 and a capacitor 311 that are connected in series between the antenna 30 and the IDT 321; a ferromagnetic rod 312 that is disposed so as to be able to enter and exit the air core coil 310; A cylindrical guide 313 that guides the magnetic rod 312 in the axial direction, a spring 314 that biases the ferromagnetic rod 312 toward the air-core coil 310, and a non-magnetic member, resists the spring force of the spring 314. And a push button 315 that pushes the ferromagnetic rod 312 out of the air-core coil 310.

  When the impedance conversion unit 31A and the push button 315 are not pressed, the ferromagnetic rod 312 is inserted into the air-core coil 310 by the spring force of the spring 314 as shown in FIG. (Hereinafter referred to as “inserted state”), and the antenna 30 and the SAW-ID tag 32 are in an impedance mismatch state.

  On the other hand, when the push button 315 is pressed against the spring force of the spring 314, the ferromagnetic rod 312 is pushed out from the air-core coil 310 as shown in FIG. And the impedance matching state is established between the antenna 30 and the SAW-ID tag 32.

  The air-core coil 310 has a predetermined self-inductance and the capacitor 311 has a predetermined self-inductance so that the antenna 30 and the SAW-ID tag 32 are in an impedance matching state in the non-inserted state, and are in an impedance mismatched state in the inserted state. Have a capacity of Further, the air-core coil 310 and the capacitor 311 constitute a band-pass filter that allows a predetermined frequency to pass in the non-inserted state.

As a material of the piezoelectric substrate 320, for example, the following materials can be used.
_{(1) SiO 2, SrTiO 3} , BaTiO 3, BaZrO 3, LaAlO 3, ZrO 2, Y 2 O38% -ZrO 2, MgO, MgAl 2 O 4, LiNbO 3, LiTaO 3, Al 2 O 3, such as ZnO Oxide.
(2) So-called BaTiO ₃ , PbTiO ₃ , Pb _1-x La _x (Zr _y Ti _1-y ) _{1-x / 4} O ₃ (which becomes so-called PZT, PLT, PLZT depending on the values of x and y) ABO ₃ type perovskite type material.
(3) Tetragonal, orthorhombic or pseudo-cubic materials such as KNbO ₃ .
(4) A ferroelectric material having a pseudo-ilmenite structure represented by LiNbO ₃ , LiTaO ₃ or the like.
_{(5) Sr x Ba 1-} x Nb 2 O 6, Pb x Ba 1-x Nb 2 O 6 tungsten bronze-type material such as.
(6) Bi ₄ Ti ₃ O ₁₂ , Pb ₂ KNb ₅ O ₁₅ , K ₃ Li ₂ Nb ₅ O ₁₅ , Pb (Zn _1/3 Nb _2/3 ) O ₃ , Pb (Mg _1/3 Nb _2/3 ) O ₃ , Pb (Ni _1/3 Nb _2/3 ) O ₃ , Pb (In _1/3 Nb _2/3 ) O ₃ , Pb (Sc _1/3 Nb _2/3 ) O ₃ , Pb (Sc _{1 / 3} Na _2/3 ) O ₃ , Pb (Cd _1/3 Nb _2/3 ) O _{3 and} other relaxor-based ferroelectric materials.
(7) Polymer materials such as polyvinylidene fluoride (PVDF).
(8) A composite material selected from the substituted derivatives of ferroelectrics listed above.

  Examples of materials for the IDT 321 and the SAW reflector 322 include single metals such as Ti, Cr, Cu, W, Ni, Ta, Ga, In, Al, Pb, Pt, Au, and Ag, or Ti—Al, Al—Cu, An alloy of Ti—N, Ni—Cr or the like laminated in a single layer or a multilayer structure of two or more layers can be used. In particular, Au, Ti, W, Al, and Cu are suitable as the metal. Moreover, it is preferable that the film thickness of this metal layer shall be 1 nm or more and less than 10 micrometers.

  FIG. 4 shows an example of the contents stored in the storage unit 44 of the transmission / reception device 4. The storage unit 44 stores wireless response device IDs “001”, “002”,... Corresponding to the delay times t1, t2,. The measured delay time does not need to be exactly the same as the delay time stored in the storage unit 44 as long as it falls within a certain error range.

  FIG. 5 shows a part of the stored contents in the database 82 of the server 8. As described above, the database 82 stores the functions assigned to the wireless response device ID. Assigned functions are indicated by circles in the figure. The assignable functions are not limited to those shown in FIG. In the figure, “blank” means a state in which no function is assigned, and “print” is a function for printing document data corresponding to the wireless response device ID. This is a function for retrieving information related to a document recorded in the recording medium 2 from the database 82. “Mail” refers to mailing document data corresponding to a wireless response device ID to a preset email address. The function to do.

  FIG. 6 shows a display example on the display screen of the control device 6. A wireless response device icon 620A and a cursor 621 are displayed on the display screen 62a of the display unit 62 of the control device 6. When the cursor 621 is moved to the wireless response device icon 620A and a selection operation (double click) is performed, As shown in the figure, a function assignment table 624A showing the functions assigned to the wireless response device ID is displayed on the display screen 62a.

(Operation of the first embodiment)
Next, the operation of the wireless response device system 1 will be described.

(1) Assignment of Function to Wireless Response Device ID FIG. 7 shows a display example on the display screen of the control device 6. When the user moves the cursor 621 to the wireless response device icon 620A displayed on the display screen 62a of the control device 6 and performs a selection operation (double click), for example, as shown in FIG. The control unit 64 of the device 6 displays the function assignment table 624B shown in FIG. The user performs an operation of selecting one of the functions desired to be assigned to the wireless response device ID from the blank, print, search, and mail to the function assignment table 624B and assigning it to the wireless response device ID. For example, when the print function is assigned to the wireless response device ID “001” and the search function is assigned to the wireless response device ID “002”, the control unit 81 of the server 8 stores data in the database 82 as shown in FIG. Register the assignment details. In FIG. 7, the assigned functions are indicated by circles.

  Note that the function assignment to the wireless response device ID may use a recording medium icon 620B as shown in FIG. 7C instead of the wireless response device icon 620A. Further, as shown in FIG. 7D, an icon corresponding to a function such as a print icon 623A, a search icon 623B, or a mail icon 623C may be dragged and dropped on the wireless response device icon 620A or the recording medium icon 620B. Good.

(2) Acquisition of Radio Response Device ID The transmission / reception device 4 transmits an interrogation wave S ₁ to the radio response device 3 at a predetermined cycle. When the wireless response device 3 exists in the interrogation wave transmission range 4a of the transmission / reception device 4 and the push button 315 of the wireless response device 3 is pressed, as described above, the ferromagnetic rod 312 is the air-core coil. The antenna 30 and the SAW-ID tag 32 are pushed out of the antenna 310 to be in an impedance matching state, and the wireless response device 3 outputs a response wave S ₂ from the antenna 30.

That is, the interrogation wave S ₁ received by the antenna 30 is supplied to the SAW-ID tag 32 via the air-core coil 310 and the capacitor 311. The IDT 321 of the SAW-ID tag 32 excites the surface acoustic wave 323 by the supplied interrogation wave S ₁ . The excited surface acoustic wave 323 propagates on the surface of the piezoelectric substrate 320, is reflected by the SAW reflector 322, returns to the IDT 321 again, and is converted into an electric signal by the IDT 321. The electric signal is output as a response wave S ₂ from the antenna 30 via the capacitor 311 and the air-core coil 310.

The control unit 43 of the transmission / reception device 4 measures a delay time from the transmission of the interrogation wave S ₁ to the reception of the response wave S ₂ by using the timer 45 and stores the wireless response device ID corresponding to the delay time. Obtained by referring to the stored contents of the unit 44, and transmits the obtained wireless response device ID to the control device 6. Further, when receiving the response wave S ₂ , the control unit 43 of the transmission / reception device 4 outputs a sound indicating the response wave from the sound generation unit 47.

On the other hand, when the push button 315 of the wireless response device 3 is not pressed, the ferromagnetic rod 312 is inserted into the air-core coil 310 as described above, and the gap between the antenna 30 and the SAW-ID tag 32 is set. Since the impedance mismatching state occurs, the interrogation wave S ₁ received by the antenna 30 is not supplied to the SAW-ID tag 32, and the wireless response device 3 does not output the response wave S ₂ .

(3) Execution of Function The control unit 64 of the control device 6 that has received the wireless response device ID from the transmission / reception device 4 accesses the server 8 via the network 7 and is assigned to the wireless response device ID from the registered content of the database 82. Recognize the function and execute the function.

  For example, when the function is “print”, the control unit 64 of the control device 6 sends a print command signal to the server 8 together with the wireless response device ID. The control unit 81 of the server 8 reads out the document data corresponding to the wireless response device ID from the database 82, transmits the document data to the printer 9, and causes the printer 9 to print. Thereby, the user can obtain the same print document as the document recorded on the recording medium 2.

  When the function assigned to the wireless response device ID is “search”, the control unit 64 of the control device 6 sends a search command signal to the server 8 together with the wireless response device ID. The control unit 81 of the server 8 searches the database 82 for information related to the document recorded on the recording medium 2 based on the wireless response device ID, reads the information, and transmits the read related information to the control device 6. The control unit 64 of the control device 6 stores the related information transmitted from the server 8 in the storage unit 63 and displays it on the display unit 62. Thereby, the user can see the related information of the document recorded on the recording medium 2.

  When the function assigned to the wireless response device ID is “mail”, the control unit 64 of the control device 6 sends a mail command signal to the server 8 together with the wireless response device ID. The control unit 81 of the server 8 reads out the document data corresponding to the wireless response device ID from the database 82, and transmits the document data to a preset email address, for example, the user's email address.

(Effects of the first embodiment)
According to the first embodiment, the function assigned to the wireless response device ID can be executed by a simple remote operation simply by operating the push button 315 of the wireless response device 3, so that everyone can It is possible to provide an interface suitable for a ubiquitous network in which a network can be accessed anytime and anywhere. In addition, since the wireless response device 3 operates with no power supply, a battery is not required, and therefore, the wireless response device 3 can be reduced in size and price.

  In addition, by appropriately designing the self-inductance of the air-core coil 310, the capacity of the capacitor 311, the amount of insertion of the ferromagnetic rod 312, the insertion method, the material, etc., not only the binary value of ON / OFF but also three or more values. It is possible to cope with multiple values.

  In addition, two SAW-ID tags having different delay times are used as the SAW-ID tag 32 of the wireless response device 3, and the air-core coil 310 and the capacitor 311 are connected to the two SAW-ID tags, respectively. The delay time may be selected by moving the bar 312 between the two air-core coils 310.

[Second Embodiment]
FIG. 8 shows a wireless response device according to the second embodiment of the present invention. The wireless response device 3 according to the present embodiment is different from the first embodiment in the impedance conversion unit, and is otherwise configured in the same manner as in the first embodiment.

  The impedance converter 31B of the present embodiment includes a variable capacitor 316 and an inductor 317 that are connected in series between the antenna 30 and the IDT 321. The variable capacitor 316 has a pair of parallel plates 316a and 316b made of a conductor. The parallel plate 316a is connected to the antenna 30 and the IDT 321, and the parallel plate 316b is configured to be movable in the vertical direction with respect to the parallel plate 316a.

  The impedance converter 31B is provided on a cylindrical guide 313 provided in the parallel plate 316b for guiding the shaft 318 in the axial direction, and a flange 319 at the end of the shaft 318, and resists the spring force of the spring 314. And a push button 315 for separating the parallel plate 316b from the parallel plate 316a.

  Further, in the state where the push button 315 is not pressed, the impedance conversion unit 31B has a state in which the parallel plate 316b is close to the parallel plate 316a (hereinafter, referred to as the parallel plate 316a) by the spring force of the spring 314 as shown in FIG. It is referred to as “proximity state”), and the impedance mismatch between the antenna 30 and the SAW-ID tag 32 is established.

  On the other hand, when the push button 315 is pressed against the spring force of the spring 314, as shown in FIG. 8B, the parallel plate 316b is separated from the parallel plate 316a (hereinafter referred to as “separated state”). Thus, the impedance matching state is established between the antenna 30 and the SAW-ID tag 32.

  The variable capacitor 316 has a predetermined capacity, and the inductor 317 has a predetermined inductance so that the antenna 30 and the SAW-ID tag 32 are in an impedance matching state in the separated state and in an impedance mismatching state in the proximity state. Have. In the separated state, the variable capacitor 316 and the inductor 317 constitute a band pass filter that allows a predetermined frequency to pass.

  According to the second embodiment, as in the first embodiment, the function assigned to the wireless response device ID can be executed by a simple remote operation, and the interface is suitable for a ubiquitous network. Can be provided. In addition, since the wireless response device 3 operates with no power supply, a battery is not required, and therefore, the wireless response device 3 can be reduced in size and price.

  Appropriate design of the capacity between the parallel plates 316a and 316b, the approach and separation of the parallel plates 316a and 316b, etc., supports not only ON / OFF binary but also multi-values of 3 or more. can do.

  In the first and second embodiments, the impedance converters 31A and 31B are ones whose impedance is converted by a pressing operation. However, photoconductivity whose conductivity is increased by light irradiation as an external stimulus is used. A cell may be used. For the photoconductive cell, for example, a compound semiconductor such as CdS, CdSe, PbS, or InSb can be used. When light is irradiated to the photoconductive cell, the resistance value decreases, and the antenna 30 and the SAW-ID tag 32 are in an impedance matching state, and a response wave to the interrogation wave is output from the antenna 30. When the light irradiation is stopped, the resistance value increases and the antenna 30 and the SAW-ID tag 32 are in an impedance mismatching state, and no response wave is output. In addition, by appropriately designing the resistance value of the photoconductive cell, it is possible to cope with not only the ON / OFF binary value but also the multi-value of three or more values.

  In addition to the photoconductive cell, other variable resistors such as a potentiometer may be used as the impedance converter. Moreover, you may use the device which generate | occur | produces electric power by external light or external force like a solar cell, a piezoelectric element, etc. Further, a device that operates by temperature (heat), humidity, acceleration, atmospheric pressure, or the like may be used as an external stimulus.

  In the first and second embodiments, the impedance converters 31A and 31B are brought into the impedance matching state by the pressing operation, but may be brought into the impedance mismatching state by the pressing operation.

[Third Embodiment]
FIG. 9 shows an application example of the wireless response device according to the third embodiment of the present invention. The wireless response device 3 according to the present embodiment is attached to a clip 11A as a clamping member. The clip 11 is configured to be opened and closed by a support portion 112 so that the upper plate 110 and the lower plate 111 can hold the recording medium 2 at the tip.

  Moreover, you may attach the radio | wireless response apparatus 3 to the upper board 110 of the board 12 with a clip, as shown in FIG.9 (b). The board 120 of the board with clip 12 has substantially the same or slightly larger area as the recording medium 2.

  According to the third embodiment, since the wireless response device 3 is mounted on the clip 11 or the clip-equipped board 12, the wireless response device 3 can be easily attached to and detached from the recording medium 2.

[Fourth Embodiment]
FIG. 10 shows a wireless response device system according to the fourth exemplary embodiment of the present invention. The wireless response device system 1 of the present embodiment is different from the first embodiment in that a wireless response device 3 is provided on the recording medium 2 and an RFID tag (non-contact ID tag) 13 is provided. Is configured in the same manner as in the first embodiment.

FIG. 11 is a block diagram of the RFID tag 13. This RFID tag 13 is a passive type that does not incorporate a battery, and an amplitude wave is modulated by an antenna 130 that transmits / receives a signal to / from the transmission / reception device 4 and a modulation wave including the interrogation wave S ₁ from the transmission / reception device 4. a receiving unit 131 that extracts the S _1, a transmission unit 132 which transmits a response wave S ₃ through the antenna 130 by modulating a carrier wave with the document ID, analyzes the query wave S _1, corresponding to the query wave S ₁ A control unit 133 that reads out response data (document ID) from the storage unit 134 and outputs the response data to the transmission unit 132, a storage unit 134 that stores the document ID and the like, and an AC voltage induced in the antenna 130 is rectified to a DC voltage. An electric power generation unit 135 that generates electric power necessary for driving each part of the RFID tag 13 and supplies the electric power to each part of the RFID tag 13 is provided.

  FIG. 12 shows a display example on the display screen 62 a of the control device 6. As shown in FIG. 12A, a recording medium icon 620B and a cursor 621 are displayed on the display screen 62a. When the document display function is assigned to the wireless response device ID, the control device 6 transmits a document transfer command signal to the server 8 together with the document ID acquired from the RFID tag 13. The control unit 81 of the server 8 reads the corresponding document data from the database 82 and transfers the document data to the control device 6 via the network 7. The control unit 64 of the control device 6 stores the document data transferred from the server 8 in the storage unit 63.

  In the state shown in FIG. 12A, when the user moves the cursor 621 to the recording medium icon 620B and performs a selection operation (double click), the control unit 64 of the control device 6 moves from the storage unit 63 to FIG. ), The document 20 corresponding to the document ID acquired from the RFID tag 13, that is, the document 20 recorded on the recording medium 2 is displayed on the display screen 62a. In FIG. 12B, 2 'is a recording medium image, and 3' is a wireless response device image.

According to the fourth embodiment, since the recording medium 2 has the RFID tag 13 in addition to the wireless response device 3, it is fixed to the recording medium 2 even when the wireless response device 3 is detached from the recording medium 2. The recording medium 2 can be specified by the medium ID that identifies the recording medium 2 held by the RFID tag 13. In addition, as a function executed by the control device 6, an image (
Document).

[Fifth Embodiment]
FIG. 13 shows a wireless response device system according to the fifth embodiment of the present invention. The present embodiment is different from the first embodiment in that the recording medium 2 is provided with a plurality of recording areas 21a and 21b and a plurality of wireless response devices 3A and 3B corresponding to the plurality of recording areas 21a and 21b. The others are configured in the same manner as in the first embodiment.

The wireless response devices 3A and 3B are configured to transmit response waves S ₂₁ and S ₂₂ having different delay times with respect to the interrogation wave S ₁ from the transmission / reception device 4.

  According to the fifth embodiment, different functions can be executed according to the plurality of recording areas 21a and 21b. For example, different processing can be performed, such as printing out document data recorded in the recording area 21a and mailing document data recorded in the recording area 21b.

[Sixth Embodiment]
FIG. 14 shows a wireless response system according to the sixth embodiment of the present invention. The present embodiment is the same as the first embodiment except that the recording medium 2 is electronic paper in the first embodiment.

  The recording medium 2 of the present embodiment includes a display unit 22 having a memory property that continues display even when there is no power. As the display unit 22 having a memory property, for example, a liquid crystal such as a cholesteric liquid crystal or a guest-host liquid crystal, an electrophoresis method, a twist ball method, a toner display, or the like can be used. Note that when the recording medium 2 includes a power source, the display unit 22 may not have a memory property such as a nematic liquid crystal or an EL display.

The transmission / reception device 4 has a function of transmitting / receiving signals S ₁ and S ₂ to / from the wireless response device 3 and writing an image on the display unit 22 of the recording medium 2. The function assigned to the wireless response device ID is written.

  According to the sixth embodiment, since the function assigned to the wireless response device ID is displayed on the display unit 22 of the recording medium 2, the user of the control device 6 can easily determine which function is executed. Can grasp. Moreover, since the recording medium 2 is composed of electronic paper, the image on the recording medium 2 can be rewritten freely.

[Seventh Embodiment]
FIG. 15 shows a wireless response system according to the seventh embodiment of the present invention. In this embodiment, in the first embodiment, a plurality of transmission / reception devices 4 (4A, 4B, 4C,...) Are arranged at predetermined positions, and these transmission / reception devices 4 are controlled by a communication medium 5. 6, the position of the wireless response device 3 attached to the recording medium 2 can be specified.

The plurality of transmission / reception devices 4 are arranged such that a part of the interrogation wave transmission range 4a of the adjacent transmission / reception devices 4 overlaps. The transmission / reception device 4 not only acquires the wireless response device ID from the response wave S ₂ from the wireless response device 3 but also measures the intensity of the response wave S ₂ and outputs a response intensity signal indicating the intensity to the control device 6. To do. In the figure, the plurality of transmission / reception devices 4 are arranged linearly, but the arrangement of the plurality of transmission / reception devices 4 is not limited to the linear arrangement, and is arbitrarily arranged according to the movement path of the recording medium 2. can do.

  The control device 6 specifies the position of the wireless response device 3, that is, the position of the recording medium 2 based on the response strength signal from each transmission / reception device 4. For example, when the wireless response device 3 exists in a region where the transmission / reception device 4A and the interrogation transmission range 4a of the transmission / reception device 4B located next to the transmission / reception device 4A overlap, the control device 6 responds from both of the transmission / reception devices 4A and 4B. Although a wave is received, it can be recognized from the response strength signal whether the wireless response device 3 is located closer to the transmitter / receiver 4A or 4B.

  According to the seventh embodiment, the two-dimensional and three-dimensional positions of the wireless response device 3 can be specified. In addition, the function assigned to the wireless response device ID can be executed by remote operation.

[Eighth Embodiment]
FIG. 16 shows a wireless response device system according to the eighth exemplary embodiment of the present invention. In the seventh embodiment, in the seventh embodiment, a plurality of control devices 6 (6A, 6B, 6C,...) Corresponding to the plurality of transmission / reception devices 4 (4A, 4B, 4C,...). Are connected.

  The plurality of transmission / reception devices 4 are arranged such that a part of the interrogation wave transmission range 4a of the adjacent transmission / reception devices 4 overlaps. Even if there are a plurality of wireless response devices 3 in one interrogation wave transmission range 4a, the transmission / reception device 4 assigns numbers to the plurality of radio response devices 3 existing in the interrogation wave transmission range 4a, and assigns the assigned numbers to the transmission / reception devices 4 A selective access mode for communicating with a specific wireless response device 3 is provided.

  According to the eighth embodiment, since the transmission / reception device 4 communicates with a specific wireless response device 3 among the plurality of wireless response devices 3 existing in the interrogation wave transmission range 4a, communication errors can be reduced. it can.

  The transmission / reception device 4 transmits / receives signals to / from a plurality of wireless response devices 3 existing in the interrogation wave transmission range 4a even if there are a plurality of wireless response devices 3 in the single inquiry wave transmission range 4a. It may have a multi-access mode that can.

[Ninth Embodiment]
FIG. 17 shows a wireless response device system according to the ninth exemplary embodiment of the present invention. In the sixth embodiment, in the sixth embodiment, an optical reader that optically reads the wireless response device ID displayed on the display unit 22 of the recording medium 2 using electronic paper and the function assigned to the ID. 10 is added, and the others are configured in the same manner as in the sixth embodiment.

  The optical reading device 10 includes a camera that captures an image of the display unit 22, and a character recognition unit that recognizes characters on the screen of the display unit 22 captured by the camera and transmits a character recognition result to the control device 6.

When the transmission / reception device 4 is notified that the response wave S ₂ has been received from the wireless response device 3, the control device 6 of the present embodiment controls the optical reading device 10 to perform imaging and character recognition, and optical The function assigned to the wireless response device ID is recognized from the character recognition result received from the reading device 10, and the function is executed.

  According to the ninth embodiment, the function assigned to the wireless response device ID can be recognized without referring to the database in the server 8.

  The recording medium 2 may be a medium made of paper or plastic.

  Next, the impedance conversion unit of the wireless response device according to the first embodiment of the present invention will be described. Example 1 corresponds to the first embodiment. The air-core coil 310 is a coil having a diameter of 2 mm, a winding number of 1 and a length of 1 mm, and has a self-inductance of about 4 nH in a non-inserted state. Things were used. A capacitor having a capacitance of 6.3 pF was used as the capacitor 311. As a result, the air-core coil 310 and the capacitor 311 could constitute a band pass filter having a center frequency of 1 GHz in a non-inserted state.

For example, when a ferrite material having a magnetic permeability of 4000 H / m is used as the ferromagnetic rod 312, when the ferromagnetic rod 312 is inserted into the air-core coil 310 as shown in FIG.
The self-inductance of the air-core coil 310 is 10 μH or more. The signal attenuation in the bandpass filter by the air-core coil 310 and the capacitor 311 was −50 dB or less, and a good impedance mismatch state was obtained.

  Next, an impedance converter of the wireless response device according to the second embodiment of the present invention will be described. This Example 2 corresponds to the second embodiment, and the capacitance is 5 nF when the parallel plates 316 a and 316 b are in the proximity state, and the capacitance is 0.1 pF in the separation state. When a coil having an inductance of 2 μH is used as the inductor 317, the variable capacitor 316 and the inductor 317 can be configured as a band-pass filter having a center frequency of 1 GHz in a separated state. In the proximity state, the signal attenuation in the band pass filter by the variable capacitor 316 and the inductor 317 was −50 dB, and a good impedance mismatch state was obtained.

[Other embodiments]
The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the invention. In addition, the constituent elements of the above embodiments can be arbitrarily combined without departing from the spirit of the invention.

  Although the case where there is no power supply has been described for the wireless response device, a wireless response device may be provided.

  Although the delay time from the transmission of the interrogation wave to the reception of the response wave is used as the wireless response device ID, a frequency included in the response wave may be used instead of the delay time or together with the delay time. By using both the delay time and the frequency as the identification information, different types of IDs can be given to one wireless response device.

It is a figure which shows the structure of the outline of the radio | wireless response apparatus system which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the detailed structure of the radio | wireless response apparatus system which concerns on the 1st Embodiment of this invention. The detailed structure of the radio responding apparatus concerning the 1st Embodiment of this invention is shown, (a) shows an impedance mismatching state, (b) is a figure which shows an impedance matching state. It is a figure which shows an example of the memory content in the memory | storage part of a transmission / reception apparatus. It is a figure which shows a part of memory content in the database of a server. It is a figure which shows the example of a display in the display screen of a control apparatus. (A)-(d) is a figure which shows the example of a display in the display screen of a control apparatus. The detailed structure of the radio | wireless response apparatus which concerns on the 2nd Embodiment of this invention is shown, (a) shows an impedance mismatching state, (b) is a figure which shows an impedance matching state. (A), (b) is a perspective view which shows the example of application of the radio | wireless response apparatus which concerns on the 3rd Embodiment of this invention. It is a block diagram which shows the radio | wireless response apparatus system which concerns on the 4th Embodiment of this invention. It is a block diagram of the RFID tag which concerns on the 4th Embodiment of this invention. (A), (b) is a figure which shows the example of a display in the display screen of a control apparatus. It is a block diagram which shows the radio | wireless response apparatus system which concerns on the 5th Embodiment of this invention. It is a block diagram which shows the radio | wireless response apparatus system which concerns on the 6th Embodiment of this invention. It is a block diagram which shows the radio | wireless response apparatus system which concerns on the 7th Embodiment of this invention. It is a block diagram which shows the radio | wireless response apparatus system which concerns on the 8th Embodiment of this invention. It is a block diagram which shows the radio | wireless response apparatus system concerning the 9th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radio response apparatus system 2 Recording medium 2 'Recording medium image 3, 3A, 3B Radio response apparatus 3' Radio response apparatus image 4a Query wave transmission range 4, 4A, 4B, 4C Transmission / reception apparatus 5 Communication medium 6 Control apparatus 7 Network 8 Server 9 Printer 10 Optical reader 11 Clip 12 Board with clip 13 RFID tag 20 Document 21a, 21b Recording area 22 Display unit 30 Antenna 31A, 31B Impedance conversion unit 32 SAW-ID tag 40 Antenna 41 Transmission unit 42 Reception unit 43 Control unit 44 storage unit 45 timer 46 wireless communication unit 47 voice generation unit 60 communication unit 61 input unit 62 display unit 62a display screen 63 storage unit 64 control unit 80 communication unit 81 control unit 82 database 90 communication unit 91 printing unit 110 upper plate 111 lower Plate 112 Support section 120 Board 130 Antenna 131 Transmission unit 133 Transmission unit 133 Control unit 134 Storage unit 135 Power generation unit 310 Air core coil 311 Capacitor 312 Ferromagnetic rod 313 Guide 314 Spring 315 Push button 316 Variable capacitor 316a, 316b Parallel plate 317 Inductor 318 Shaft 319 Rift unit 320 Piezoelectric Body substrate 322 Reflector 323 Surface acoustic wave 620A Wireless response device icon 620B Recording medium icon 621 Cursor 623A Print icon 623B Search icon 623C Mail icon 624A, 624B Function assignment table

Claims (19)

A wireless response device that transmits a response wave including identification information in response to the received interrogation wave;
A transmitting / receiving device that transmits the interrogation wave to the wireless response device, receives the response wave from the wireless response device, and acquires the identification information included in the response wave;
A wireless response device system comprising: function execution means for executing a function assigned to the identification information acquired by the transmission / reception device.   The wireless response device is provided between an antenna that transmits and receives the interrogation wave and the response wave, identification information generating means that generates the identification information, and between the antenna and the identification information generating means. The wireless response device system according to claim 1, further comprising: an impedance converter that changes impedance according to the frequency.   The impedance converter includes a variable inductor whose inductance changes according to an external force, a variable capacitor whose capacitor changes according to an external force, or a variable resistor whose resistance value changes according to an external force or external light. The wireless response device system according to claim 2.   The wireless response device system according to claim 2, wherein the impedance converter outputs the identification information as a multilevel signal according to an amount of change in impedance.   The wireless response apparatus system according to claim 2, wherein the identification information generating means uses a SAW-ID tag, an RF-ID tag, or a delay line.   3. The identification information generated by the identification information generating means corresponds to a delay time from when the transmission / reception apparatus generates the interrogation wave until the response wave is received. The wireless response device system described.   The function execution means stores the function assigned to the identification information together with the identification information, and the function corresponding to the identification information from the storage device based on the identification information acquired by the transmission / reception device The wireless response device system according to claim 2, further comprising: a control device that searches for the function and executes the searched function.   The wireless response device according to claim 7, wherein the control device includes a display unit, and displays the function assigned to the identification information together with the identification information acquired by the transmission / reception device on the display unit. system.   The wireless response device system according to claim 1, wherein the wireless response device operates without a power source.   The wireless response device system according to claim 1, wherein the wireless response device is detachably attached to a recording medium.   The wireless response device system according to claim 10, wherein the wireless response device is attached to a holding member that holds the recording medium.   The non-contact ID tag which transmits the identification information which identifies the said recording medium according to the said interrogation wave from the said transmitter / receiver with the said wireless response apparatus was attached to the said recording medium. The wireless response device system described. The recording medium is attached with a plurality of wireless response devices corresponding to a plurality of recording areas,
The wireless response device system according to claim 10, wherein the function execution unit executes the function according to the identification information included in each of the plurality of response waves from the plurality of wireless response devices. The recording medium records the function assigned to the identification information,
The function execution means includes an imaging unit that captures an area in which the function of the recording medium is recorded, a character recognition unit that recognizes the function from an image captured by the imaging unit, and a character that is detected by the character recognition unit. The wireless response apparatus system according to claim 10, further comprising a control unit that executes the recognized function.   The wireless response device system according to claim 10, wherein the recording medium is electronic paper.   The wireless response device system according to claim 15, wherein the function execution unit displays the function assigned to the identification information together with the identification information acquired by the transmission / reception device on the electronic paper.   The function execution unit reads out the image data corresponding to the identification information acquired by the transmission / reception apparatus from the storage unit, and stores the read image data. The wireless response device system according to claim 15, wherein the wireless response device system is displayed on the electronic paper. The transmission / reception device is a plurality of transmission / reception devices provided at predetermined positions so that the interrogation wave transmission ranges partially overlap,
2. The wireless response device system according to claim 1, wherein the plurality of transmission / reception devices output the identification information and a response strength signal indicating the strength of the response wave to the function execution unit.   The transmission / reception device specifies one wireless response device among the plurality of wireless response devices existing in the interrogation wave transmission range, and transmits / receives the interrogation wave and the response wave to / from the specified wireless response device. The wireless response device system according to claim 1.

Images