WO2013170688A1 - Procédé, terminal et système de communication en radiofréquences - Google Patents

Procédé, terminal et système de communication en radiofréquences Download PDF

Info

Publication number
WO2013170688A1
WO2013170688A1 PCT/CN2013/074569 CN2013074569W WO2013170688A1 WO 2013170688 A1 WO2013170688 A1 WO 2013170688A1 CN 2013074569 W CN2013074569 W CN 2013074569W WO 2013170688 A1 WO2013170688 A1 WO 2013170688A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
signal
module
card reader
communication terminal
Prior art date
Application number
PCT/CN2013/074569
Other languages
English (en)
Chinese (zh)
Inventor
黄臻
Original Assignee
国民技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国民技术股份有限公司 filed Critical 国民技术股份有限公司
Publication of WO2013170688A1 publication Critical patent/WO2013170688A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation

Definitions

  • the present invention relates to the field of radio frequency communication, and in particular, to a radio frequency communication method, a radio frequency communication terminal, and a system.
  • the radio frequency communication terminal and the radio frequency card reader exchange information by means of radio frequency communication, but when there is an obstacle or a long distance between the radio frequency communication terminal and the radio frequency card reader, the power supply capability of the radio frequency communication terminal is insufficient and the card reader load modulation Insufficient reasons may cause normal communication and information exchange between the RF communication terminal and the RF card reader.
  • the radio frequency communication terminal adopts an active radio frequency communication terminal to solve the problem of insufficient power supply capability, and the radio frequency communication terminal actively transmits the encoded and subcarrier modulated radio frequency to the radio frequency card reader.
  • the reader emits radio frequency signals with different frequencies.
  • this technical solution requires additional receiving circuits of different frequencies in the RF card reader, and is not compatible with the standard RF card reader.
  • the prior art cannot solve the problem that normal communication between the radio communication terminal and the radio frequency card reader cannot be performed when there is an obstacle or a long distance between the radio frequency communication terminal and the radio frequency card reader.
  • the invention provides a radio frequency communication method, a radio frequency communication terminal and a system, and solves the problem that an existing radio frequency card reader transmits a radio frequency signal different from a radio frequency card reader with a transmission frequency different from that of the radio frequency card reader. problem.
  • the present invention provides a radio frequency communication terminal, where the radio frequency communication terminal includes a receiving module, a processing module, a reference module, a signal synthesizing module, and a transmitting module;
  • the receiving module is configured to receive a first radio frequency signal sent by a radio frequency card reader, and output the first radio frequency signal to the processing module;
  • the processing module is configured to convert the first radio frequency signal into communication information, and output the communication information to the signal synthesizing module;
  • the reference module is configured to obtain a reference frequency, and output the reference frequency to the signal synthesis module;
  • the reference frequency is a first used by the radio frequency card reader to perform information interaction with the radio frequency communication terminal The sum or difference between the carrier frequency and the subcarrier frequency of the radio frequency reader;
  • the signal synthesis module is configured to generate a second radio frequency signal according to the received reference frequency and the communication information, and output the second radio frequency signal to the sending module;
  • the sending module is configured to send the second radio frequency signal to the radio frequency card reader.
  • the signal synthesis module includes a frequency conversion unit and a modulation unit; the frequency conversion unit is configured to receive the reference frequency and convert it into a second carrier frequency output to the modulation unit The modulating unit is configured to receive the communication information and the second carrier frequency, and modulate the communication information into a second radio frequency signal according to the second carrier frequency.
  • the reference module is connected to the receiving module, and the reference module acquires the radio frequency card reader and the radio frequency communication from a first radio frequency signal output by the receiving module.
  • the first carrier frequency used by the terminal for information interaction and the subcarrier frequency of the radio frequency reader, the obtained first carrier frequency and the subcarrier frequency are added or subtracted to obtain the reference frequency.
  • the radio frequency communication terminal further includes a clock module, and the reference module acquires the reference frequency according to a clock signal output by the clock module.
  • the receiving module includes a receiving antenna and a receiving amplifier; the receiving antenna is configured to receive a first radio frequency signal sent by the radio frequency card reader, and output the first radio frequency signal to the a receiving amplifier; the receiving amplifier amplifies and shapes the first radio frequency signal, and outputs the amplified and shaped first radio frequency signal to the processing module.
  • the processing module includes a demodulation unit, a decoder unit, a processor unit, and an encoder unit, and the demodulation unit is configured to demodulate the first radio frequency signal into a baseband signal. And outputting to the decoder unit; the decoder unit is configured to convert the baseband signal into a digital signal and output to the processor unit; the processor unit is configured to determine, according to the digital signal The transmitted data forms a second digital signal and is output to the encoder unit; the encoder unit is configured to encode the second digital signal to form the communication information and output to the signal synthesis module.
  • the sending module includes a transmitting amplifier and a transmitting antenna; the transmitting amplifier is configured to amplify the second radio frequency signal and output the signal to the transmitting antenna; Receiving and transmitting the second radio frequency signal to the radio frequency reader.
  • the present invention further provides a radio frequency communication system, including a radio frequency card reader and a radio frequency communication terminal as described above;
  • the radio frequency card reader includes a transmitting module, a receiving module, and a processing module;
  • the first radio frequency signal is sent to the radio frequency communication terminal;
  • the receiving module is configured to receive a second radio frequency signal sent by the radio frequency communication terminal;
  • the processing module is configured to use the second radio frequency signal and the radio frequency Transmitting, by the card reader, a radio frequency signal having a frequency of the first carrier frequency on a coil of the radio frequency card reader, and reading the second radio frequency according to a change of a parameter caused by being superimposed on the coil Communication information of the radio frequency communication terminal carried by the signal.
  • the parameters include current and/or voltage.
  • the present invention also provides a radio frequency communication method, including:
  • the radio frequency communication terminal receives the first radio frequency signal sent by the radio frequency card reader, and converts the first radio frequency signal into communication information;
  • the radio frequency communication terminal acquires a reference frequency, where the reference frequency is a sum of a first carrier frequency used by the radio frequency card reader to perform information interaction with the radio frequency communication terminal and a subcarrier frequency of the radio frequency card reader Or the difference;
  • the radio frequency communication terminal generates a second radio frequency signal according to the reference frequency and the communication information, and sends the second radio frequency signal to the radio frequency card reader;
  • the radio frequency card reader superimposes the second radio frequency signal with a radio frequency signal generated by the radio frequency card reader and having a frequency of the first carrier frequency on a coil of the radio frequency card reader, according to the superposition
  • the change of the parameter caused by the coil reads the communication information of the radio frequency communication terminal carried by the second radio frequency signal.
  • the radio frequency communication terminal receives the first radio frequency signal sent by the radio frequency card reader, converts it into communication information, and then acquires a reference frequency, the reference frequency is a radio frequency card reader The sum or difference between the first carrier frequency used by the current communication and the subcarrier frequency of the radio frequency reader; then generating a second radio frequency signal according to the obtained reference frequency and communication information, and transmitting the same to the radio frequency card reader;
  • the radio frequency card reader superimposes the second radio frequency signal on the coil of the radio frequency card reader with the radio frequency signal whose frequency is the first carrier frequency, and reads the second according to the change of the parameter superimposed on the coil.
  • Communication information of the radio frequency communication terminal carried by the radio frequency signal that is, the present invention utilizes a parameter generated by the radio frequency card reader on the coil of the radio frequency card reader when the frequency used for transmission and reception differs by one subcarrier frequency (eg, current, The voltage and other parameters change to obtain the information in the second RF signal, and there is no need to additionally add a receiving circuit in the RF card reader.
  • a parameter generated by the radio frequency card reader on the coil of the radio frequency card reader when the frequency used for transmission and reception differs by one subcarrier frequency (eg, current, The voltage and other parameters change to obtain the information in the second RF signal, and there is no need to additionally add a receiving circuit in the RF card reader.
  • FIG. 1 is a schematic structural diagram of a radio frequency communication system according to the present invention.
  • FIG. 2 is a basic flow chart of a communication method using the radio frequency communication system of the present invention.
  • FIG. 3 is a schematic structural diagram of a specific implementation manner of a radio frequency communication terminal according to the present invention.
  • FIG. 4 is a schematic structural diagram of a specific implementation manner of a radio frequency communication terminal according to the present invention.
  • FIG. 5 is a schematic structural diagram of a specific embodiment of a radio frequency communication terminal according to the present invention.
  • a radio frequency communication terminal and system provided by the present invention will be described with reference to FIG.
  • the radio frequency communication system includes a radio frequency card reader and a radio frequency communication terminal, wherein the radio frequency card reader includes a receiving module (hereinafter referred to as a first receiving module).
  • the radio frequency communication terminal includes a receiving module (hereinafter referred to as a second receiving module), a reference module, and a processing module (hereinafter referred to as a second processing) Module), signal synthesizing module, and transmitting module (hereinafter referred to as second transmitting module); respectively, each functional module in the radio frequency communication system provided by the present invention is further elaborated below:
  • each module included in the RF card reader is as follows:
  • the first sending module is configured to send a first radio frequency signal to the radio frequency communication terminal, where the first radio frequency signal carries related information of the first frequency (for example, the first frequency size) and the subcarrier information FSC of the radio frequency card reader, the first frequency
  • the frequency of the radio frequency signal sent by the radio frequency card reader and the radio frequency communication terminal during normal operation that is, the first carrier frequency FC of the radio frequency card reader, and carrying the communication information of the radio frequency card reader;
  • the first receiving module is configured to receive a second radio frequency signal sent by the radio frequency communication terminal to the radio frequency card reader, and transmit the received second radio frequency signal to the first processing module for processing;
  • the first processing module is configured to process the received second radio frequency signal to obtain information of the radio frequency communication terminal carried by the second radio frequency signal; and the working principle is: the first processing module is configured according to the second radio frequency signal and the radio frequency card reader
  • the generated RF signal of the FC is a change in the coil parameters (such as current and/or voltage) caused by signal superposition on the coil of the RF card reader.
  • the communication information of the radio frequency communication terminal carried by the second RF signal is read.
  • each module included in the RF communication terminal is as follows:
  • the second receiving module is configured to receive the first radio frequency signal sent by the radio frequency card reader, and send the first radio frequency signal to the second processing module;
  • the second processing module is configured to convert the first radio frequency signal into communication information, and send the communication information to the signal synthesizing module;
  • the reference module is configured to obtain a reference frequency, and send the obtained reference frequency to the signal synthesis module.
  • the reference frequency FD is used when the radio frequency card reader modulates the radio frequency signal when the radio frequency card reader exchanges information with the radio frequency communication terminal.
  • the signal synthesis module is configured to generate a second radio frequency signal according to the received reference frequency and the communication information, and output the second radio frequency signal to the sending module;
  • the second sending module is configured to send the second radio frequency signal to the radio frequency card reader.
  • the method for operating the radio frequency communication system provided by the present invention includes the following steps:
  • Step 201 The radio frequency card reader generates a first radio frequency signal, where the first radio frequency signal carries communication information of the radio frequency card reader.
  • Step 202 The radio frequency card reader sends the first radio frequency signal to the radio frequency communication terminal.
  • Step 203 The radio frequency communication terminal receives the first radio frequency signal.
  • Step 204 The radio frequency communication terminal processes the first radio frequency signal to obtain communication information.
  • Step 205 The radio frequency communication terminal acquires a reference frequency.
  • the reference module of the radio frequency communication terminal acquires the reference frequency by: the reference module obtains the reference frequency from the first radio frequency signal or the clock module; when the reference frequency is obtained by the clock module, the reference frequency can be directly set to the FC+FSC on the clock module.
  • the reference module obtaining the reference frequency from the first radio frequency signal may include: obtaining the first carrier frequency FC and the subcarrier frequency FSC from the first radio frequency signal respectively; and then combining the same to obtain a reference frequency of FC+FSC Or FC-FSC.
  • Step 206 The radio frequency communication terminal generates and transmits a second radio frequency signal according to the communication information and the reference frequency.
  • the radio frequency communication terminal generates a second radio frequency signal according to the communication information and the reference frequency, and the second radio frequency signal carries the communication information of the radio frequency communication terminal;
  • the signal synthesizing module in the radio frequency communication terminal includes a frequency conversion unit and a modulation unit, and the frequency conversion unit receives the reference frequency And converting the second carrier frequency of the radio frequency communication terminal to the modulation unit, the modulation unit receives the communication information and the second carrier frequency, and modulates the communication information into the second radio frequency signal according to the second carrier frequency.
  • Step 207 The radio frequency card reader receives the second radio frequency signal, and reads the content of the second radio frequency signal:
  • the principle that the RF card reader processes the second RF signal and obtains the communication information of the RF communication terminal is: the second RF signal and the RF signal generated by the RF card reader with the carrier frequency of the FC are superimposed on the RF signal of the RF card reader.
  • the RF card reader changes the current and/or voltage of the coil caused by the superposition of the RF signal. The change is the same as the voltage or current change caused by the passive proximity IC card load modulation, so the hardware of the card reader can be omitted. After modification, the radio frequency communication information carried by the second radio frequency signal can be read.
  • the radio frequency communication terminal provided by the present invention will be further described with reference to FIG.
  • the radio frequency communication terminal includes a receiving module, a reference module, a signal synthesizing module, a processing module, and a transmitting module; wherein the receiving module is composed of a receiving antenna and a receiving amplifier, and the processing module is composed of a demodulating unit, a decoder unit, and a processor.
  • the unit and the encoder unit are composed, and the signal synthesizing module is composed of a frequency converting unit and a modulating unit, and the transmitting module is composed of a transmitting antenna and a transmitting amplifier.
  • the receiving antenna in the receiving module receives the first radio frequency signal sent by the radio frequency card reader, and the receiving amplifier amplifies and shapes the first radio frequency signal received by the receiving antenna; the demodulating unit in the processing module will be shaped.
  • the amplified first radio frequency signal is demodulated into a baseband signal, and the decoder unit converts the baseband signal into a digital signal and sends it to the processor unit, and the processor unit sends the data to be sent to the encoder unit, and the encoder unit outputs the encoded code.
  • the reference module acquires a reference frequency
  • the frequency conversion unit in the signal synthesis module receives the reference frequency and converts it into a second carrier frequency used by the radio communication terminal to output to the modulation module, and the modulation unit receives the communication information and the second carrier frequency And modulating the communication information into the second radio frequency signal according to the second carrier frequency
  • the transmitting amplifier in the transmitting module amplifies the output radio frequency signal of the modulating unit, and drives the transmitting antenna to transmit the amplified radio frequency signal.
  • the reference module can obtain the first information used by the radio frequency communication terminal to interact with the radio frequency card reader according to the first radio frequency signal.
  • the magnitude of a carrier frequency FC and a subcarrier frequency FSC (ie, the reference frequency is obtained) is then transmitted to the frequency conversion unit, which in this embodiment provides a reference frequency to the reference module.
  • FIG. 5 is a schematic structural diagram of another specific embodiment of a radio frequency communication terminal according to the present invention.
  • the reference module can obtain a reference frequency from the clock module;
  • the reference frequency When setting the reference frequency on the clock module, first determine the first carrier frequency FC and the subcarrier frequency FSC used when the RF communication terminal interacts with the RF card reader, and then the reference frequency can be obtained.
  • the receiving antenna and the transmitting antenna may be the same antenna, and different functions are implemented at different times to receive or transmit radio frequency signals.
  • the radio frequency communication system provided by the present invention does not need to add a receiver of different frequencies in the radio frequency card reader to read the communication information of the radio frequency communication terminal carried by the second radio frequency signal:
  • the radio frequency card reader sends a first radio frequency signal to the radio frequency communication terminal; the first radio frequency signal carries the communication information of the radio frequency card reader, and the first carrier frequency used by the first radio frequency signal sent by the radio frequency card reader ( The first frequency);
  • the radio frequency communication terminal processes the received first radio frequency signal to obtain communication information, and generates a second radio frequency signal by using a reference frequency provided by the reference module; the second radio frequency signal carries communication information of the radio frequency communication terminal;
  • the radio frequency card reader receives the second radio frequency signal and reads the communication information carried by the second radio frequency signal.
  • RF readers for example working in international standards (ISO The 14443 standard) radio frequency card reader, when receiving a load modulation signal of a subcarrier generated by a passive proximity integrated circuit card (the frequency of the subcarrier is: FSC), the load modulation signal is made on the radio frequency card reader coil The current and/or voltage changes, and the RF card reader then reads the data from the proximity integrated circuit card based on the change.
  • ISO The 14443 standard radio frequency card reader when receiving a load modulation signal of a subcarrier generated by a passive proximity integrated circuit card (the frequency of the subcarrier is: FSC), the load modulation signal is made on the radio frequency card reader coil The current and/or voltage changes, and the RF card reader then reads the data from the proximity integrated circuit card based on the change.
  • the device does not need to be improved to read the data carried by the second radio frequency signal transmitted by the radio frequency communication terminal in the present invention, thereby establishing an RF communication connection with the radio frequency communication terminal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

La présente invention concerne un procédé, un terminal et un système de communication en radiofréquences (RF). La différence de fréquence entre la fréquence d'émission et la fréquence de réception utilisées par un lecteur de carte RF est une fréquence de sous-porteuse ; en utilisant la différence de fréquence, les informations d'un second signal RF envoyé par un terminal de communication RF sont obtenues en changeant des paramètres (tels que le courant ou la tension, etc.) produits dans la bobine du lecteur de carte RF ; et la communication normale et l'interaction d'informations entre le terminal de communication RF et le lecteur de carte RF sont assurées sans ajouter un quelconque circuit de réception supplémentaire dans le lecteur de carte RF. Les coûts de fabrication et d'utilisation sont inférieurs et le degré de satisfaction de d'expérience utilisateur est meilleur que dans l'état antérieur de la technique.
PCT/CN2013/074569 2012-05-17 2013-04-23 Procédé, terminal et système de communication en radiofréquences WO2013170688A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2012101530504A CN103427882A (zh) 2012-05-17 2012-05-17 一种射频通信终端及系统
CN201210153050.4 2012-05-17

Publications (1)

Publication Number Publication Date
WO2013170688A1 true WO2013170688A1 (fr) 2013-11-21

Family

ID=49583104

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/074569 WO2013170688A1 (fr) 2012-05-17 2013-04-23 Procédé, terminal et système de communication en radiofréquences

Country Status (2)

Country Link
CN (1) CN103427882A (fr)
WO (1) WO2013170688A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105049091A (zh) * 2015-06-15 2015-11-11 成都中微电微波技术有限公司 宽带载波式电子通信装置
SG11201906743XA (en) 2017-01-23 2019-08-27 Tendyron Corp Card read response method, apparatus, and system, and signal transceiving device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101167083A (zh) * 2005-04-28 2008-04-23 Nxp股份有限公司 用于通信设备的电路和发送控制方法
WO2011058455A1 (fr) * 2009-11-14 2011-05-19 Logomotion, S.R.O. Procédé et solution de transmission de données entre un transpondeur et un lecteur, spécialement dans des solutions de paiement avec un dispositif de communication mobile
WO2011097118A2 (fr) * 2010-02-04 2011-08-11 Carefusion 303, Inc. Dispositif et procédé d'identification par radiofréquence

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102024290B (zh) * 2009-09-23 2014-01-15 国民技术股份有限公司 控制射频通信距离的方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101167083A (zh) * 2005-04-28 2008-04-23 Nxp股份有限公司 用于通信设备的电路和发送控制方法
WO2011058455A1 (fr) * 2009-11-14 2011-05-19 Logomotion, S.R.O. Procédé et solution de transmission de données entre un transpondeur et un lecteur, spécialement dans des solutions de paiement avec un dispositif de communication mobile
WO2011097118A2 (fr) * 2010-02-04 2011-08-11 Carefusion 303, Inc. Dispositif et procédé d'identification par radiofréquence

Also Published As

Publication number Publication date
CN103427882A (zh) 2013-12-04

Similar Documents

Publication Publication Date Title
US5727025A (en) Voice, music, video and data transmission over direct current wires
WO2014131288A1 (fr) Terminal à écran tactile, système de communication et procédé basé sur une conduction de champ électrique du corps humain
CN101098168B (zh) 用于听力装置的蓝牙传输装置和相应的传输方法
WO2013170688A1 (fr) Procédé, terminal et système de communication en radiofréquences
CN205622822U (zh) 一种双蓝牙音箱
CN112118517A (zh) 一种音频芯片及终端
WO2015074617A1 (fr) Procédé et appareil de transmission de données, terminal mobile et système de communication acoustique
CN113015057A (zh) 一种耳机及耳机系统
WO2015156535A1 (fr) Puce d'identification par radiofréquence (rfid) passive et dispositif de communication ayant une puce rfid passive
CN211019029U (zh) 编解码一体的音视频处理器
EP1235444B1 (fr) Dispositif de station de base radio et procede de radiocommunication
CN201898580U (zh) 一种便携通信设备
SE9700279L (sv) Trådlös terminal arbetande enligt fler än ett luftgränssnittsprotokoll
KR20010017264A (ko) 데이터 통신 방법
CN213960336U (zh) 多功能一体机装置
CN205356338U (zh) 一种嵌入wifi和音频桥接模块的电力猫
WO2013034011A1 (fr) Procédé de détection de collision, dispositif radiofréquence magnétique et système de communication
CN114157961B (zh) 一种基于fpga实现madi数字音频处理的系统和电子设备
JP2000232462A (ja) ホームネットワークシステム
CN212749585U (zh) 双通道接口电路及双通道信号传输电路
CN216122906U (zh) 一种音频无线传送装置及音频传送系统
JP4060761B2 (ja) 光伝送装置、及びそれを備える電子機器
CN201278524Y (zh) 无线音频接收转接器
CN207053489U (zh) 音频信号接收解码装置
IL147120A0 (en) Wireless local distribution system using standard power lines

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13790202

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 15.05.15)

122 Ep: pct application non-entry in european phase

Ref document number: 13790202

Country of ref document: EP

Kind code of ref document: A1