WO2006030493A1 - 非接触型通信システム - Google Patents
非接触型通信システム Download PDFInfo
- Publication number
- WO2006030493A1 WO2006030493A1 PCT/JP2004/013376 JP2004013376W WO2006030493A1 WO 2006030493 A1 WO2006030493 A1 WO 2006030493A1 JP 2004013376 W JP2004013376 W JP 2004013376W WO 2006030493 A1 WO2006030493 A1 WO 2006030493A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reader
- tag
- signal
- rzw
- carrier
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims description 42
- 239000000969 carrier Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000002800 charge carrier Substances 0.000 claims description 17
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000000594 atomic force spectroscopy Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10356—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
Definitions
- an RF-ID (Radio Frequency Identification) tag not equipped with a driving source such as a battery and a reader / writer device have a distance of about 10 meters.
- the present invention relates to a contactless communication system that performs wireless communication.
- a tag In a conventional non-contact communication system, a tag is equipped with a driving source such as a battery. Even in such a case, the RZW device is used as a carrier for charging so that the tag can perform communication processing. To the tag.
- the tag When the tag receives the transmitted charge carrier, the tag rectifies the charge carrier to obtain drive power and accumulates the power.
- the RZW device transmits a reflection carrier to the tag when receiving the tag force modulation signal.
- the tag When the tag receives the reflective carrier transmitted from the RZW device, the tag starts communication processing using the previously accumulated power. That is, a process of modulating the reflection carrier according to the data to be transmitted and transmitting the modulated signal to the reader / writer device is performed (see, for example, Patent Document 1).
- Patent Document 1 Japanese Patent Laid-Open No. 11 41155 (paragraph numbers [0014] to [0016], FIG. 1)
- the conventional contactless communication system may be configured as described above, when multiple RZW devices are installed, the multiple RZW devices do not synchronize with each other and perform communication processing asynchronously. To do. For this reason, mutual interference occurs between multiple RZW devices (for example, when a certain RZW device receives a modulated signal with a tag force, another RZW device force receives a transmitted signal). As a result, there were problems such as deterioration of communication quality.
- the present invention has been made to solve the above-described problems, and can prevent the occurrence of mutual interference among a plurality of RZW devices even when a plurality of RZW devices are installed.
- An object is to obtain a contact-type communication system.
- the contactless communication system according to the present invention is such that a plurality of reader / writer devices transmit reflection carriers at different timings.
- FIG. 1 is a configuration diagram showing a contactless communication system according to Embodiment 1 of the present invention.
- FIG. 2 is a configuration diagram showing the inside of an RZW device and a tag.
- FIG. 3 is an explanatory diagram showing signal transmission / reception between an RZW device and a tag.
- FIG. 4 is an explanatory diagram showing signal transmission / reception between an RZW device and a tag according to Embodiment 2 of the present invention.
- FIG. 5 is an explanatory diagram showing signal transmission / reception between an RZW device and a tag according to Embodiment 3 of the present invention.
- FIG. 6 is an explanatory diagram showing signal transmission / reception between an RZW device and a tag according to Embodiment 4 of the present invention.
- FIG. 7 is an explanatory diagram showing signal transmission / reception between an RZW device and a tag according to Embodiment 5 of the present invention.
- FIG. 8 is a block diagram showing a non-contact communication system according to Embodiment 5 of the present invention.
- FIG. 9 is an explanatory diagram showing signal transmission / reception between a W device and an R device and a tag according to Embodiment 6 of the present invention.
- FIG. 10 is a configuration diagram showing a contactless communication system according to Embodiment 6 of the present invention.
- FIG. 1 is a block diagram showing a contactless communication system according to Embodiment 1 of the present invention.
- RZW devices 1A, IB, 1C and 1D which are reader / writer devices are communication areas 2A
- the tag force in 2B, 2C, and 2D also transmits a tag reflection carrier when receiving a reflected signal (modulated signal).
- Tags 3B, 3C, and 3D are passive tags having a card shape, for example, that are not equipped with a driving source such as a battery, and are located in communication areas 2B, 2C, and 2D of RZW devices IB, 1C, and 1D.
- tags 3B, 3C, and 3D receive the tag reflection carrier transmitted from RZW devices IB, 1C, and 1D, they modulate the tag reflection carrier according to the data to be transmitted, and the reflected signal that is the modulation signal is modulated. Send to RZW device IB, 1C, 1D.
- the RZW control device 4 controls communication processing of the RZW devices 1A, IB, 1C, and 1D.
- the RZW devices 1A, IB, 1C are controlled to transmit the tag reflection carrier at different timings.
- the RZW devices 1A and 1D have a wide installation interval and the mutual signals do not interfere with each other, the RZW devices 1A and 1D are controlled to transmit the tag reflection carrier at the same timing.
- FIG. 2 is a configuration diagram showing the inside of RZW devices 1A, IB, 1C, 1D (denoted as RZW device 1 in the figure) and tags 3B, 3C, 3D (denoted as tag 3 in the figure)
- the RF signal oscillator 11 oscillates an unmodulated signal having a frequency f, for example.
- control circuit 12 When the control circuit 12 transmits a tag recognition signal to the tag 3, the control circuit 12 outputs a command indicating the tag recognition signal to the pulse modulator 13 and the amplifier 14, and the charge carrier and the tag reflection carrier to the tag 3. In the case of transmission, a control signal instructing transmission of a charging carrier or a tag reflection carrier is output to the pulse modulator 13 and the amplifier 14.
- the pulse modulator 13 Upon receiving a command from the control circuit 12, the pulse modulator 13 modulates the unmodulated signal oscillated from the RF signal oscillator 11 in response to the command, and outputs the modulated signal to 14 amplifiers for control.
- the control signal instructing transmission of the charging carrier or tag reflection carrier is received from the circuit 12, the unmodulated signal oscillated from the RF signal oscillator 11 is output to the amplifier 14 as it is.
- the amplifier 14 When the amplifier 14 receives a command from the control circuit 12, the amplifier 14 amplifies the modulation signal output from the pulse modulator 13, and receives a control signal instructing transmission of a charging carrier or a tag reflection carrier from the control circuit 12, and then outputs a pulse.
- the unmodulated signal output from the modulator 13 is amplified.
- the circulator 15 outputs the modulated signal or non-modulated signal amplified by the amplifier 14 to the antenna 16, while outputting the reflected signal (modulated signal) received by the antenna 16 to the demodulation circuit 17.
- the antenna 16 transmits the modulated signal or non-modulated signal output from the circulator 15 to the tag 3, while receiving the reflected signal (modulated signal) transmitted from the tag 3.
- the demodulating circuit 17 When receiving a reflected signal (modulated signal) from the circulator 15, the demodulating circuit 17 demodulates the reflected signal and analyzes the data.
- the antenna 21 of the tag 3 receives the modulated signal or non-modulated signal transmitted from the RZW device 1, and transmits the reflected signal (modulated signal) output from the modulation / demodulation circuit 24 to the RZW device 1.
- the charging circuit 22 rectifies the unmodulated signal to obtain driving power, and stores the driving power in the capacitor 23.
- the modulation / demodulation circuit 24 is driven by using the electric power stored in the capacitor 23 of the charging circuit 22, and if the received signal of the antenna 21 is a modulation signal, the tag recognition signal is demodulated from the modulation signal, and the tag It is determined whether or not the recognition signal represents its own identification information. If the received signal of the antenna 21 is an unmodulated signal of the tag reflection carrier, the reflection carrier is modulated according to the data addressed to the RZW device 1, and the modulated signal is output to the antenna 21.
- Tag 3 is not equipped with a power source such as a battery and cannot be activated unless it is supplied with external power.
- control circuit 12 of the RZW device 1 outputs a control signal instructing transmission of a charge carrier to the pulse modulator 13 and the amplifier 14.
- the pulse modulator 13 of the RZW device 1 When the pulse modulator 13 of the RZW device 1 receives a control signal instructing transmission of the charge carrier from the control circuit 12, it modulates the unmodulated signal oscillated from the RF signal oscillator 11. Without being transmitted, the unmodulated signal is output to the amplifier 14 as it is.
- the amplifier 14 of the RZW device 1 When the amplifier 14 of the RZW device 1 receives a control signal indicating transmission of a charge carrier from the control circuit 12, the amplifier 14 amplifies the unmodulated signal output from the amplifier 14 and outputs the amplified signal to the circuit 15. .
- the amplifier 14 normally has a charge carrier non-modulated signal so that the amplitude value of the signal is larger than that when a modulated signal such as a tag recognition signal or a non-modulated signal of a tag reflection carrier is amplified. Is amplified (see Figure 3).
- the circulator 15 of the RZW device 1 When the circulator 15 of the RZW device 1 receives the unmodulated signal of the charge carrier from the amplifier 14, it outputs the unmodulated signal to the antenna 16.
- the antenna 16 of the RZW device 1 transmits the unmodulated signal to the tag 3 by radiating the unmodulated signal into the air.
- the antenna 21 of the tag 3 receives the unmodulated signal transmitted from the RZW device 1.
- the tags 3B, 3C, 3D receive the unmodulated signal of the carrier for change transmitted from the R / W devices IB, 1C, 1D. Since tag 3 does not exist in communication area 2A of RZW device 1A, tag 3 that receives the unmodulated signal of the charging carrier transmitted from RZW device 1A does not exist.
- the charging circuit 22 of the tag 3 determines whether or not the received signal of the antenna 21 is an unmodulated signal of the charging carrier.
- the received signal is recognized as an unmodulated signal of the charge carrier.
- the charging circuit 22 of the tag 3 rectifies the unmodulated signal to obtain driving power, and the driving power is transferred to the capacitor 23. accumulate.
- the RZW device 1 After supplying power to the tag 3 as described above, the RZW device 1 receives a modulated signal on which data is superimposed from the tag 3, and then receives the tag 3 to be communicated. In order to instruct the transmission of the modulation signal, the tag recognition signal of tag 3 is transmitted.
- control circuit 12 of the RZW device 1 outputs a command indicating a tag recognition signal to the pulse modulator 13 and the amplifier 14.
- the pulse modulator 13 of the RZW device 1 When receiving a command from the control circuit 12, the pulse modulator 13 of the RZW device 1 modulates an unmodulated signal oscillated from the RF signal oscillator 11 according to the command, and amplifies the tag recognition signal that is the modulated signal. Output to 14.
- the amplifier 14 of the RZW device 1 Upon receiving a command from the control circuit 12, the amplifier 14 of the RZW device 1 amplifies a tag recognition signal that is a modulation signal output from the pulse modulator 13.
- the circulator 15 of the RZW device 1 When the circulator 15 of the RZW device 1 receives a tag recognition signal that is a modulation signal from the amplifier 14, the circulator 15 outputs the tag recognition signal to the antenna 16.
- the antenna 16 of the RZW device 1 transmits the tag recognition signal to the tag 3 by radiating the tag recognition signal into the air.
- the antenna 21 of the tag 3 receives a tag recognition signal that is a modulated signal transmitted from the RZW device 1.
- the tags 3B, 3C, and 3D receive the tag recognition signals transmitted from the RZW devices IB, 1C, and 1D. Since tag 3 does not exist in communication area 2A of RZW device 1A, tag 3 that receives the tag recognition signal transmitted from RZW device 1A does not exist.
- the modulation / demodulation circuit 24 of the tag 3 is driven using the electric power stored in the capacitor 23 of the charging circuit 22, and determines whether or not the received signal of the antenna 21 is a modulated signal.
- the envelope of the received signal of the antenna 21 is detected, and it is determined whether or not the received signal is a modulated signal based on fluctuations in the envelope.
- the modulation / demodulation circuit 24 of the tag 3 When the modulation / demodulation circuit 24 of the tag 3 recognizes that the reception signal of the antenna 21 is a modulation signal, it demodulates the tag recognition signal that is the modulation signal.
- the modem circuit 24 recognizes that it is necessary to transmit data when a tag reflection carrier is transmitted from the R / W device 1.
- the RZW device 1 transmits a tag recognition signal to the tag 3 as described above, it transmits a tag reflection carrier to the tag 3. Specifically, it is as follows.
- control circuit 12 of the RZW device 1 outputs a control signal instructing transmission of a tag reflection carrier to the pulse modulator 13 and the amplifier 14.
- the pulse modulator 13 of the RZW device 1 When receiving a control signal instructing transmission of the tag reflection carrier from the control circuit 12, the pulse modulator 13 of the RZW device 1 does not modulate the unmodulated signal oscillated from the RF signal oscillator 11, but the unmodulated signal. Is output to the amplifier 14 as it is.
- the amplifier 14 of the RZW device 1 When the amplifier 14 of the RZW device 1 receives a control signal indicating transmission of the tag reflection carrier from the control circuit 12, the amplifier 14 amplifies the unmodulated signal output from the amplifier 14 and outputs the amplified signal to the circuit 15. To do.
- the circulator 15 of the RZW device 1 When the circulator 15 of the RZW device 1 receives the unmodulated signal of the tag reflection carrier from the amplifier 14, it outputs the unmodulated signal to the antenna 16.
- the antenna 16 of the RZW device 1 transmits the unmodulated signal to the tag 3 by radiating the unmodulated signal into the air.
- the antenna 21 of the tag 3 receives an unmodulated signal transmitted from the RZW device 1.
- the tags 3B, 3C, 3D receive the unmodulated signal of the tag reflection carrier transmitted from the RZW devices IB, 1C, 1D. Since tag 3 exists in communication area 2A of RZW device 1A, tag 3 that receives the non-modulated signal of the tag reflection carrier transmitted from RZW device 1A does not exist.
- the modulation / demodulation circuit 24 of the tag 3 determines whether or not the received signal of the antenna 21 is an unmodulated signal of the tag reflection carrier.
- the envelope of the received signal of the antenna 21 is detected, and if the envelope value is within the set value range, it is recognized as an unmodulated signal of the received signal force tag reflection carrier.
- the modulation / demodulation circuit 24 recognizes that the received signal of the antenna 21 is an unmodulated signal of the tag reflection carrier, the modulation / demodulation circuit 24 modulates the reflection carrier according to the data addressed to the RZW device 1, and reflects the reflected signal as the modulation signal. Is output to antenna 21.
- the antenna 21 of the tag 3 transmits the reflected signal to the RZW device 1 by radiating the reflected signal into the air.
- the antenna 16 of the RZW device 1 receives the reflected signal transmitted from the tag 3.
- the RZW devices IB, 1C, 1D receive the reflected signals transmitted from the tags 3B, 3C, 3D. Since tag 3 does not exist in communication area 2A of RZW device 1A,
- RZW device 1 A does not receive the reflected signal from tag 3.
- the circulator 15 of the RZW device 1 outputs the reflected signal received by the antenna 16 to the demodulation circuit 17.
- the demodulator circuit 17 of the RZW device 1 When receiving the reflected signal from the circulator 15, the demodulator circuit 17 of the RZW device 1 demodulates the reflected signal and analyzes the data addressed to itself.
- the RZW devices IB, 1C, 1D can analyze the data addressed to the tags 3B, 3C, 3D.
- the RZW device 1B receives the reflected signal from the tag 3B!
- RZW device 1A or RZW device 1C sends a modulated signal or an unmodulated signal
- the RZW device 1B may receive a modulated signal or a non-modulated signal transmitted from the RZW device 1A or the RZW device 1C.
- This modulated signal or unmodulated signal becomes an interference wave when the RZW device 1B receives the reflected signal from the tag 3B, and the reception characteristics of the reflected signal deteriorate.
- the RZW control device 4 performs control so that the RZW devices 1A, IB, and 1C do not transmit the tag recognition signal and the tag reflection carrier at the same timing. .
- the RZW device 1B receives a reflected signal from the tag 3B.
- the RZW device 1A and the RZW device 1C do not transmit the tag recognition signal and the tag reflection carrier so that the reflected wave interference signal is not received (see Fig. 3). .
- the RZW device 1A and the RZW device 1D have a wide installation interval and the mutual signals do not interfere with each other, in the example of Fig. 3, the RZW devices 1A and 1D have the tag recognition signal and tag reflection at the same timing. Control to send carrier for! / Speak.
- the force shown for the RZW control device 4 to control the communication of the RZW devices 1A, IB, 1C By the RZW devices 1A, IB, 1C monitoring each other's communication status RZW devices 1A, IB, and 1C may transmit tag recognition signals and tag reflection carriers at different timings.
- the RZW devices 1A, IB, 1C are configured to transmit the tag recognition signal and the reflection carrier at different timings. Even if the RZW devices 1A, IB, and 1C are installed, it is possible to prevent mutual interference between a plurality of RZW devices.
- the force shown for transmitting the tag recognition signal to the tag 3 before the RZW device 1 transmits the tag reflection carrier to the tag 3. If it is set to transmit a reflected signal unconditionally if a reflected carrier is received, the tag recognition signal is added to the tag before the RZW device 1 transmits the reflected tag carrier to the tag 3. No need to send to 3,.
- the RZW device 1 transmits a single pulse as a charging carrier when supplying power to the tag 3, but as shown in FIG. 4, a plurality of single pulses are transmitted. (The duty ratio of multiple pulses is lower than the duty ratio of a single pulse) and transmit multiple pulses as a carrier for charging.
- a tag 3 receives a carrier for charge having the same frequency transmitted from a plurality of RZW devices 1A, IB, 1C
- a force that adds a plurality of carriers for charging is used.
- the force can be significantly reduced.
- the RZW devices 1A, IB, and 1C transmit charge carriers at different timings, reverse phase addition does not occur, so that a reduction in stored power can be prevented.
- the RZW device 1A and the RZW device 1D have a wide installation interval. There is no tag 3 that receives both the charge carrier to which the R / W devices 1A and 1D force are also transmitted. Therefore, the RZW devices 1A and 1D transmit the tag reflection carrier at the same timing.
- the RZW devices 1A, IB, 1C, and 1D force may be controlled by the RZW control device 4, and the RZW devices 1A, IB, and 1C may communicate with each other. By monitoring the situation, the RZW devices 1A, IB, and 1C may transmit charge carriers at different timings.
- the power shown for repeatedly transmitting the charge carrier, the tag recognition signal, and the tag reflection carrier is shown in FIG.
- the RZW device 1 A transmits a reflection carrier, if a reflected signal that is a modulation signal is not transmitted from the tag 3, transmission of a charging carrier, a tag recognition signal, and a tag reflection carrier is subsequently performed. May be canceled
- the RZW device 1A Even if the RZW device 1A stops transmitting the charging carrier, the tag recognition signal, and the tag reflection carrier, for example, under the instruction of the RZW control device 4, the RZW device 1A is the carrier for the charge and the tag recognition signal. Needless to say, transmission of the tag reflection carrier can be resumed.
- RZW devices 1A, IB, and 1C transmit reflection carriers at different timings to prevent the occurrence of mutual interference between multiple RZW devices.
- RZW devices 1A, IB, 1C are When the reflection carrier is transmitted by the transmission, the reception characteristics of the RZW devices 1A, IB, and 1C deteriorate as described above.
- the reception characteristics of the RZW device 1 are enhanced as follows.
- the modulated signal (reflected signal) transmitted from the tag 3E present in the communication area 2E of the RZW device 1E is received by the RZW device 1E, but adjacent to the RZW device 1E. Therefore, if the RZW device 1F can also be received, the RZW controller 4 collects the reflected signal received by the RZW device IE and the reflected signal received by the RZW device IF, and Selection ⁇ Performs diversity processing.
- the selection / combination diversity processing can improve the reception characteristics of the received signal, and thus has the effect of improving the reception characteristics of the reflected signal transmitted from the tag 3E.
- the force shown for the RZW control device 4 performing the selection of both reflection signals' combining diversity processing for example, the RZW device 1E force 3 ⁇ 4 collecting the reflection signals received by the ZW device 1F, A selection diversity combining process between the reflected signal received by itself and the reflected signal received by the RZW device 1F may be performed.
- the RZW devices 1A, IB, and 1C have the same power for transmitting the reflection carrier at the same timing. As in the first embodiment, the RZW devices 1A, IB , Even if 1C transmits reflection carriers at different timings, multiple reflected signals may be selected and combined with diversity processing.
- the RZW devices 1A, IB, and 1C transmit the reflection carrier at different timings, and the synergistic effect of performing the selection / combination diversity processing has the effect of improving the reception characteristics. Play.
- the power shown for the RZW device 1 having a radio wave transmission function and a reception function as shown in FIGS. 9 and 10, the charging carrier, the tag recognition signal, and the tag reflection RZW to the W device (transmission only) that is the writer device that transmits the carrier and the R device (reception only) that is the reader device that receives the reflected signal transmitted from the tag 3 Device 1 may be separated and its W device and R device installed separately.
- the contactless communication system according to the present invention needs to improve communication quality by preventing mutual interference between a plurality of RZW devices even when a plurality of RZW devices are installed. Suitable for things.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006534977A JP4463822B2 (ja) | 2004-09-14 | 2004-09-14 | 非接触型通信システム |
PCT/JP2004/013376 WO2006030493A1 (ja) | 2004-09-14 | 2004-09-14 | 非接触型通信システム |
Applications Claiming Priority (1)
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PCT/JP2004/013376 WO2006030493A1 (ja) | 2004-09-14 | 2004-09-14 | 非接触型通信システム |
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WO2006030493A1 true WO2006030493A1 (ja) | 2006-03-23 |
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PCT/JP2004/013376 WO2006030493A1 (ja) | 2004-09-14 | 2004-09-14 | 非接触型通信システム |
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WO (1) | WO2006030493A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009009248A (ja) * | 2007-06-26 | 2009-01-15 | Panasonic Electric Works Co Ltd | 自律移動装置 |
JP2010130302A (ja) * | 2008-11-27 | 2010-06-10 | Universal Entertainment Corp | 遊技用ベット装置 |
JP2012027948A (ja) * | 2011-10-26 | 2012-02-09 | Panasonic Electric Works Co Ltd | 無線認証システムおよびそのセンサ |
JP2012216172A (ja) * | 2011-03-28 | 2012-11-08 | Denso Wave Inc | 無線タグシステム |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10224276A (ja) * | 1997-02-06 | 1998-08-21 | Nippon Soken Inc | 電磁誘導式自動認識装置 |
JP2000293638A (ja) * | 1999-04-01 | 2000-10-20 | Toshiba Corp | Icカード処理システムとicカードリーダライタ |
JP2001095037A (ja) * | 2000-08-25 | 2001-04-06 | Nec Corp | 移動通信システムのハンドオフ方法、移動受信機、基地局及び交換局 |
JP2001155127A (ja) * | 1999-11-26 | 2001-06-08 | Matsushita Electric Ind Co Ltd | 非接触データキャリアシステム |
JP2003283367A (ja) * | 2002-03-27 | 2003-10-03 | Hitachi Kokusai Electric Inc | 質問器システム |
-
2004
- 2004-09-14 JP JP2006534977A patent/JP4463822B2/ja not_active Expired - Fee Related
- 2004-09-14 WO PCT/JP2004/013376 patent/WO2006030493A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10224276A (ja) * | 1997-02-06 | 1998-08-21 | Nippon Soken Inc | 電磁誘導式自動認識装置 |
JP2000293638A (ja) * | 1999-04-01 | 2000-10-20 | Toshiba Corp | Icカード処理システムとicカードリーダライタ |
JP2001155127A (ja) * | 1999-11-26 | 2001-06-08 | Matsushita Electric Ind Co Ltd | 非接触データキャリアシステム |
JP2001095037A (ja) * | 2000-08-25 | 2001-04-06 | Nec Corp | 移動通信システムのハンドオフ方法、移動受信機、基地局及び交換局 |
JP2003283367A (ja) * | 2002-03-27 | 2003-10-03 | Hitachi Kokusai Electric Inc | 質問器システム |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009009248A (ja) * | 2007-06-26 | 2009-01-15 | Panasonic Electric Works Co Ltd | 自律移動装置 |
JP2010130302A (ja) * | 2008-11-27 | 2010-06-10 | Universal Entertainment Corp | 遊技用ベット装置 |
JP2012216172A (ja) * | 2011-03-28 | 2012-11-08 | Denso Wave Inc | 無線タグシステム |
JP2012027948A (ja) * | 2011-10-26 | 2012-02-09 | Panasonic Electric Works Co Ltd | 無線認証システムおよびそのセンサ |
Also Published As
Publication number | Publication date |
---|---|
JP4463822B2 (ja) | 2010-05-19 |
JPWO2006030493A1 (ja) | 2008-05-08 |
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