WO2010044177A1 - 非接触通信装置 - Google Patents
非接触通信装置 Download PDFInfo
- Publication number
- WO2010044177A1 WO2010044177A1 PCT/JP2009/002879 JP2009002879W WO2010044177A1 WO 2010044177 A1 WO2010044177 A1 WO 2010044177A1 JP 2009002879 W JP2009002879 W JP 2009002879W WO 2010044177 A1 WO2010044177 A1 WO 2010044177A1
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- WO
- WIPO (PCT)
- Prior art keywords
- reset
- resonance frequency
- contact communication
- cpu
- data
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0702—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery
- G06K19/0703—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery the battery being onboard of a handheld device, e.g. a smart phone or PDA
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
- G06K19/0726—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement including a circuit for tuning the resonance frequency of an antenna on the record carrier
Definitions
- the present invention relates to a contactless communication device suitable for use in a mobile phone.
- Patent Document 1 In recent years, there has been an increasing need to use trains using non-contact communication functions installed in mobile phones. As a non-contact communication system, for example, there is one disclosed in Patent Document 1.
- FIG. 3 is a block diagram showing a schematic configuration of a conventional non-contact communication device mounted on a mobile phone capable of non-contact communication.
- the non-contact communication device 9 shown in the figure includes an antenna circuit 10, a resonance frequency adjusting circuit 11, a radio circuit 12, a non-contact communication circuit 13, storage elements 14 and 15, a reset circuit 16, and a CPU 17.
- the antenna circuit 10 includes one coil L, a plurality of capacitors C1 to Cn, and a plurality of switches SW1 to SWn.
- the switches SW1 to SWn are inserted in series with the capacitors C2 to Cn. That is, one capacitor C is connected in series to one switch SW.
- a parallel resonance circuit having different resonance frequencies can be configured together with the coil L and the capacitor C1.
- the resonance frequency adjustment circuit 11 adjusts the resonance frequency of the antenna circuit 10.
- the resonance frequency adjustment circuit 11 sets the resonance frequency of the antenna circuit 10 by turning on / off the switches SW1 to SWn of the antenna circuit 10 based on the resonance frequency adjustment data held in the storage element 14.
- the radio circuit 12 demodulates the reception data from the radio signal received by the antenna circuit 10, inputs the demodulated reception data to the non-contact communication circuit 13, and modulates the carrier wave with the transmission data input from the non-contact communication circuit 13 Thus, a radio signal is generated and transmitted from the antenna circuit 10.
- the non-contact communication circuit 13 performs communication according to the communication condition setting A and the communication condition setting B set by the CPU 17.
- the storage element 14 holds the resonance frequency adjustment data as described above. Note that an EEPROM is generally used for the memory element 14.
- the storage element 15 holds CPU control software (including communication condition data).
- the CPU 17 operates in accordance with the CPU control software held in the storage element 15 and sets the communication condition setting A and the communication condition setting B based on the communication condition data for the non-contact communication circuit 13.
- the reset circuit 16 monitors the battery voltage, and resets the CPU 17 and the storage element 14 when the battery voltage drops below a predetermined value.
- a) is a battery voltage
- (b) is a battery attachment / detachment state
- (c) is a CPU reset / reset release state
- (d) is a state of a resonance frequency adjustment data holding region
- (e) is a non-contact communication.
- the state of the apparatus operation area (f) shows the state of the writable area
- (g) shows the state of the readable area.
- a CPU reset release threshold Th ⁇ b> 1 and a CPU reset threshold Th ⁇ b> 2 are set for the battery voltage.
- the magnitude relationship between these threshold values is Th1> Th2.
- the resonance frequency adjustment data can be read from the storage element 14 and further can be written and read by non-contact communication.
- writing by non-contact communication means writing data to, for example, a ticket gate (not shown). Further, the reading by non-contact communication means reading data from the ticket gate.
- the CPU 17 When the operation of a high load such as a call is finished and the battery voltage exceeds the CPU reset release threshold Th1, the CPU 17 enters an operating state at the time t4 and the resonance frequency adjustment data can be read from the storage element 14. It becomes. Furthermore, writing and reading by non-contact communication are possible.
- the CPU 17 becomes inoperative. Further, along with the CPU reset, the resonance frequency adjustment data cannot be read from the storage element 14. Furthermore, writing and reading by non-contact communication become impossible. Thereafter, the AC adapter is connected and charging is performed again. When the battery voltage exceeds the threshold value Th1 for canceling the CPU reset at time t6, the CPU 17 enters an operating state, and the resonance frequency adjustment data is read from the storage element 14. Is possible. Further, the non-contact communication device 9 can be operated, and writing and reading by non-contact communication are possible.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a non-contact communication device capable of performing non-contact communication even when the CPU cannot operate due to a decrease in battery voltage, a reset, or the like. .
- the non-contact communication apparatus of the present invention is driven by a battery and stores resonance frequency adjustment data in a non-contact communication apparatus that performs non-contact communication by adjusting the resonance frequency of the antenna circuit using the resonance frequency adjustment data.
- Storage means ; control means reset by a first reset signal issued when the battery voltage falls below a first threshold; and temporarily holding data, wherein the battery voltage is lower than the first threshold.
- Register means reset by a second reset signal issued when the threshold value is below 2 and an antenna circuit whose resonance frequency is adjusted by data temporarily held in the register means, the control means Before the first reset signal resets the resonance frequency adjustment data from the storage means via the control means.
- the resonance frequency of the antenna circuit is downloaded using the resonance frequency adjustment data previously downloaded to the register means in a state where the control means is reset by the first reset signal. Adjust the frequency.
- the resonance frequency adjustment data is downloaded to the register means before the control means is reset by the first reset signal, and the state is maintained even if the control means is reset by the first reset signal.
- the resonance frequency of the antenna circuit is adjusted by using the resonance frequency adjustment data downloaded to the register means in the case where the non-contact communication device of the present invention is applied to, for example, a mobile phone. Non-contact communication can be performed even in a state where the control means cannot operate due to the above.
- the antenna circuit includes a coil, a plurality of capacitors, and a plurality of switches connected to the capacitors, and the resonance frequency of the antenna circuit uses the resonance frequency adjustment data.
- the adjustment is performed by turning on / off the plurality of switches.
- the present invention makes it possible to perform non-contact communication even when the control means cannot operate due to a decrease in battery voltage or reset.
- the block diagram which shows schematic structure of the non-contact communication apparatus which concerns on one embodiment of this invention Time chart for explaining the operation of the non-contact communication apparatus of FIG.
- the block diagram which shows schematic structure of the conventional non-contact communication apparatus Time chart for explaining the operation of the conventional non-contact communication apparatus of FIG.
- FIG. 1 is a block diagram showing a schematic configuration of a non-contact communication apparatus according to an embodiment of the present invention. 1 that are the same as those in FIG. 3 described above are denoted by the same reference numerals and description thereof is omitted.
- the non-contact communication device 1 of the present embodiment has the same configuration as the conventional non-contact communication device 9 except that the setting register 2 is provided instead of the storage element 14 of the conventional non-contact communication device 9 shown in FIG. ing. That is, the non-contact communication device 1 of the present embodiment includes a setting register 2, an antenna circuit 10, a resonance frequency adjustment circuit 11, a radio circuit 12, a non-contact communication circuit 13, a storage element 15, and a reset circuit. 16 and a CPU 17.
- the storage element 15 holds CPU control software (communication condition data) and also holds resonance frequency adjustment data that is a parameter value held by the storage element 14 of the conventional non-contact communication device 9.
- CPU control software communication condition data
- resonance frequency adjustment data that is a parameter value held by the storage element 14 of the conventional non-contact communication device 9.
- the memory element 14 mainly using an EEPROM since the memory element 14 mainly using an EEPROM is not used, the cost can be reduced accordingly.
- the setting register 2 is less expensive than the storage element 14.
- the CPU 17 reads the resonance frequency adjustment data and the CPU control software, which are parameter values held in the storage element 15 before the CPU is reset, and brings it to the setting register 2 via itself.
- the timing for reading data from the storage element 15 is preferably, for example, when the CPU 17 is activated.
- the CPU 17 is reset when the battery voltage drops and falls below the CPU reset release threshold Th2 (first threshold), but before that, the resonance frequency adjustment data and the communication condition data are downloaded to the setting register 2.
- Th2 first threshold
- the reset of the setting register 2 is performed when the battery voltage falls below a threshold value Th3 (second threshold value) that is significantly lower than the CPU reset threshold value Th2.
- Th3 second threshold value
- Th3 the setting register 2 is reset and the data held in the setting register 2 is cleared. Thereby, the operation of the non-contact communication apparatus 1 becomes impossible, and writing and reading by non-contact communication become impossible.
- (a) is a battery voltage
- (b) is a battery attachment / detachment state
- (c) is a setting register reset / reset release state
- (d) is a CPU reset / reset release state
- (e) is a parameter value download timing.
- (F) is the state of the resonance frequency adjustment data holding area
- (g) is the state of the non-contact communication device operating area
- (h) is the state of the writable area
- (i) is the readable area.
- a threshold value Th1 for canceling the CPU reset a threshold value Th2 for resetting the CPU, and a threshold value Th3 for resetting the setting register 2 are set for the battery voltage.
- the magnitude relationship of these threshold values is Th1> Th2 >> Th3.
- the current battery voltage is applied to the non-contact communication device 1 from the attachment time t1. If an AC adapter (not shown) is connected at this time, charging starts and the battery voltage increases. Thereafter, when the battery voltage exceeds the threshold value Th1 for releasing the CPU reset at time t2, the reset of the setting register 2 is released at the time t2, and data can be written to the setting register 2. At the same time, the CPU reset is canceled and the CPU 17 enters an operating state. The CPU 17 downloads the resonance frequency adjustment data and the communication condition data from the storage element 15 to the setting register 2 at the time of activation. Thereby, the resonance frequency adjustment data and the communication condition data can be read from the setting register 2. In addition, data can be written and read by non-contact communication at time t2.
- the CPU is reset at the time t5 in the same manner as described above, and the CPU 17 becomes inoperative. In addition, it becomes impossible to write data by non-contact communication.
- the setting register 2 is reset at the time t6, the contents of the setting register 2 are cleared, and non-contact communication is not performed. This makes it impossible to read data.
- the AC adapter is connected and charging is performed again.
- the reset of the setting register 2 is released and data can be written to the setting register 2. It becomes like this.
- the CPU reset is canceled and the CPU 17 enters an operating state.
- the CPU 17 downloads the resonance frequency adjustment data and the communication condition data from the storage element 15 to the setting register 2. Thereby, the resonance frequency adjustment data and the communication condition data can be read from the setting register 2. In addition, writing and reading by non-contact communication are possible.
- the storage element 15 storing the resonance frequency adjustment data and the communication condition data, and the resonance frequency adjustment data and the communication condition data can be temporarily stored.
- the CPU 17 downloads the resonance frequency adjustment data and the communication condition data from the storage element 15 to the setting register 2 before being reset by the CPU reset signal.
- the resonance frequency of the antenna circuit is adjusted using the resonance frequency adjustment data that has been downloaded to the setting register 2 in that state. Therefore, even when the CPU 17 cannot operate due to a decrease in battery voltage, reset, etc.
- Contact communication can be performed. Therefore, for example, when using a train using a mobile phone, when passing through the ticket gate, even if the load temporarily increases due to a call or the like and the battery voltage decreases, the ticket gate can be passed.
- the present invention has an effect that non-contact communication can be performed even when the control means cannot operate due to a decrease in battery voltage, reset, or the like, and can be applied to a mobile phone or the like capable of non-contact communication.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transceivers (AREA)
- Near-Field Transmission Systems (AREA)
- Telephone Function (AREA)
Abstract
Description
f0=1/{2π√L×(C1+C2+C3+…Cn)}
2 設定レジスタ
10 アンテナ回路
11 共振周波数調整回路
12 無線回路
13 非接触通信回路
15 記憶素子
16 リセット回路
17 CPU
Claims (2)
- 電池で駆動され、共振周波数調整用データを用いてアンテナ回路の共振周波数を調整して非接触通信を行う非接触通信装置において、
共振周波数調整用データを記憶する記憶手段と、
電池電圧が第1の閾値を下回ったとき発せられる第1のリセット信号によりリセットされる制御手段と、
データを一時的に保持し、前記電池電圧が前記第1の閾値より低い第2の閾値を下回ったとき発せられる第2のリセット信号によりリセットされるレジスタ手段と、
前記レジスタ手段に一時的に保持されたデータにより共振周波数が調整されるアンテナ回路と、を備え、
前記制御手段が前記第1のリセット信号によりリセットされる前に前記共振周波数調整用データを前記記憶手段から前記制御手段を介して前記レジスタ手段に前記データとしてダウンロードしておき、前記制御手段が前記第1のリセット信号によりリセットされた状態で前記レジスタ手段に先にダウンロードしておいた前記共振周波数調整用データを用いて前記アンテナ回路の共振周波数を調整する非接触通信装置。 - 前記アンテナ回路は、コイルと、複数のコンデンサと、前記コンデンサにそれぞれ接続された複数のスイッチとを有し、
前記アンテナ回路の共振周波数は、前記共振周波数調整用データを用いて前記複数のスイッチをオン/オフすることにより調整する請求項1に記載の非接触通信装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/124,528 US20110205133A1 (en) | 2008-10-17 | 2009-06-23 | Non-contact communication device |
BRPI0919680A BRPI0919680A2 (pt) | 2008-10-17 | 2009-06-23 | dispositivo de comunicação sem-contato |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-268899 | 2008-10-17 | ||
JP2008268899A JP2010098600A (ja) | 2008-10-17 | 2008-10-17 | 非接触通信装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010044177A1 true WO2010044177A1 (ja) | 2010-04-22 |
Family
ID=42106355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/002879 WO2010044177A1 (ja) | 2008-10-17 | 2009-06-23 | 非接触通信装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110205133A1 (ja) |
JP (1) | JP2010098600A (ja) |
BR (1) | BRPI0919680A2 (ja) |
WO (1) | WO2010044177A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010147743A (ja) * | 2008-12-18 | 2010-07-01 | Toshiba Corp | 情報処理装置およびその製造方法 |
US8886145B2 (en) * | 2012-03-26 | 2014-11-11 | Sony Corporation | Antenna adjustment circuit, antenna adjustment method, and communication unit |
US11502728B2 (en) * | 2019-08-20 | 2022-11-15 | Nxp B.V. | Near-field wireless device for distance measurement |
US11133845B2 (en) | 2019-12-05 | 2021-09-28 | Assa Abloy Ab | Detuning detection and compensation for inductive coupling systems |
Citations (4)
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JP2005202721A (ja) * | 2004-01-16 | 2005-07-28 | Matsushita Electric Ind Co Ltd | 非接触データキャリア |
JP2008033594A (ja) * | 2006-07-28 | 2008-02-14 | Sony Corp | データ記憶装置、電力制御方法、並びに、通信装置 |
JP2008108016A (ja) * | 2006-10-25 | 2008-05-08 | Nec Corp | 通信装置及びそれを用いた携帯通信端末 |
JP2008160312A (ja) * | 2006-12-21 | 2008-07-10 | Toshiba Corp | 無線通信装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4313152A1 (de) * | 1993-04-22 | 1994-10-27 | Sel Alcatel Ag | HF-Verstärker mit Signalpegelregelung und damit ausgestatteter Funksender |
US6097347A (en) * | 1997-01-29 | 2000-08-01 | Intermec Ip Corp. | Wire antenna with stubs to optimize impedance for connecting to a circuit |
US6535175B2 (en) * | 2000-06-01 | 2003-03-18 | Intermec Ip Corp. | Adjustable length antenna system for RF transponders |
US7109944B2 (en) * | 2004-01-26 | 2006-09-19 | Kyocera Corporation | Antenna using variable capacitance element and wireless communication apparatus using the same |
JP4755921B2 (ja) * | 2006-02-24 | 2011-08-24 | 富士通株式会社 | Rfidタグ |
JP4974171B2 (ja) * | 2007-12-07 | 2012-07-11 | ソニーモバイルコミュニケーションズ株式会社 | 非接触無線通信装置、非接触無線通信アンテナの共振周波数の調整方法及び携帯端末装置 |
-
2008
- 2008-10-17 JP JP2008268899A patent/JP2010098600A/ja not_active Withdrawn
-
2009
- 2009-06-23 US US13/124,528 patent/US20110205133A1/en not_active Abandoned
- 2009-06-23 WO PCT/JP2009/002879 patent/WO2010044177A1/ja active Application Filing
- 2009-06-23 BR BRPI0919680A patent/BRPI0919680A2/pt not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005202721A (ja) * | 2004-01-16 | 2005-07-28 | Matsushita Electric Ind Co Ltd | 非接触データキャリア |
JP2008033594A (ja) * | 2006-07-28 | 2008-02-14 | Sony Corp | データ記憶装置、電力制御方法、並びに、通信装置 |
JP2008108016A (ja) * | 2006-10-25 | 2008-05-08 | Nec Corp | 通信装置及びそれを用いた携帯通信端末 |
JP2008160312A (ja) * | 2006-12-21 | 2008-07-10 | Toshiba Corp | 無線通信装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2010098600A (ja) | 2010-04-30 |
US20110205133A1 (en) | 2011-08-25 |
BRPI0919680A2 (pt) | 2015-12-01 |
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