WO2007121607A1 - Dispositif portable à fonction carte intelligente sans contact - Google Patents

Dispositif portable à fonction carte intelligente sans contact Download PDF

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Publication number
WO2007121607A1
WO2007121607A1 PCT/CN2006/000746 CN2006000746W WO2007121607A1 WO 2007121607 A1 WO2007121607 A1 WO 2007121607A1 CN 2006000746 W CN2006000746 W CN 2006000746W WO 2007121607 A1 WO2007121607 A1 WO 2007121607A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
portable device
memory
processing unit
unit
Prior art date
Application number
PCT/CN2006/000746
Other languages
English (en)
Chinese (zh)
Inventor
Jie Sun
Wei Xiong
Taojin Le
Original Assignee
Utstarcom Telecom Co., Ltd.
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 Utstarcom Telecom Co., Ltd. filed Critical Utstarcom Telecom Co., Ltd.
Priority to PCT/CN2006/000746 priority Critical patent/WO2007121607A1/fr
Priority to CNA2006800549794A priority patent/CN101467360A/zh
Publication of WO2007121607A1 publication Critical patent/WO2007121607A1/fr

Links

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
    • 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 contactless smart card technology and consumer electronic devices, and more particularly to a portable device having a contactless smart card function. Background technique
  • One of the objects of the present invention is to provide a portable device having a contactless smart card function that automatically completes the card swiping process without manual intervention.
  • a portable device having a contactless smart card function comprising: a detecting unit adapted to generate a detection signal in response to a signal transmitted by the reader/writer; a processing unit coupled to the detecting unit;
  • a radio frequency circuit adapted to communicate with the reader/writer and to be connected to the processing unit, wherein the processing unit sends an activation signal to the radio frequency circuit to activate the radio frequency circuit and the The communication process of the reader.
  • the radio frequency circuit and the portable device are provided in the above portable device.
  • the detecting unit includes a resonant circuit using an inductor coil and a capacitor as a detecting element, and a rectifying amplifying circuit using the resonant circuit output signal as an input signal.
  • the detecting unit is connected to a power source of the portable device.
  • the processing unit is one of a digital signal processor, a microprocessor, a central processing unit, an application specific integrated circuit, and a field programmable gate array.
  • the radio frequency circuit comprises: an antenna
  • radio frequency modulation and demodulation unit coupled to the antenna and the processing unit; and a memory coupled to the radio frequency modulation and demodulation unit,
  • the radio frequency modulation and demodulation unit After receiving the activation signal from the processing unit, the radio frequency modulation and demodulation unit processes the information in the memory and transmits the information to the antenna for transmission, or the radio frequency modulation and demodulation unit The signals received by the antenna are processed and transmitted to the memory and/or the processing unit.
  • the radio frequency circuit comprises:
  • a memory coupled to the microcontroller
  • a radio frequency modulation and demodulation unit coupled to the microcontroller and the antenna, the microcontroller transmitting information in the memory to the radio frequency modulation after receiving the activation signal from the processing unit a demodulation unit, which is processed and transmitted to the antenna for transmission, or the radio frequency modulation and demodulation unit processes the signal received by the antenna and transmits it to the microcontroller for processing and/or transmission thereof To the processing unit and/or the memory.
  • the portable device is a mobile phone, and the radio frequency circuit package is followed
  • the memory stores information related to mobile phone communication and smart card usage, and the microcontroller, the memory, and the The radio frequency modulation and demodulation unit is powered by the mobile phone battery.
  • the portable device is a mobile phone
  • the microcontroller is connected to the processing unit
  • the memory stores information related to use of the smart card
  • the microcontroller, the memory, and the radio frequency modulation and demodulation The unit is powered by the phone battery.
  • the portable device is a mobile phone
  • the radio frequency modulation and demodulation unit is connected to the processing unit
  • related information used by the smart card is stored in another memory independent of the memory and connected to the processing unit.
  • the portable device is a mobile phone
  • the mobile phone keyboard is connected to the memory via the processing unit and the microcontroller, so that a user can input information to the memory and/or modify the memory through the mobile phone keyboard.
  • Information stored inside is a mobile phone
  • the portable device is one of an MP3/MP4 player, a personal digital assistant, and a handheld computer.
  • the detection unit since the detection unit is built in, the automatic detection of the oscillation signal of the reader/writer can be performed, and then the RF circuit is started to communicate with the reader/writer, thereby realizing automatic and rapid card swiping, free from such as passing Manual intervention process such as inputting commands in the phone menu.
  • the radio frequency circuit can be powered via the portable device, the function of the energy coupling element carried by the coil in the detecting unit is no longer required, which facilitates downsizing of the detecting unit and miniaturization of the detecting unit.
  • the radio frequency circuit is connected to the processing unit of the portable device, so that the powerful computing and processing resources of the unit can be fully utilized to identify various types of readers, and different read/write card requirements are processed, realizing the true sense. "One card”.
  • Another advantage of the present invention is embodied in the integration of the RF circuit module with the mobile phone S IM/PIM card, since smart card information (such as account number, amount, password, etc.) and mobile phone communication information (such as identity information such as IMSI) are stored in the SIM/
  • smart card information such as account number, amount, password, etc.
  • mobile phone communication information such as identity information such as IMSI
  • the memory in the PIM card can therefore be tied together, and the SIM/PIM card is lost and the smart card is also lost.
  • the invention also has the advantages that the input and modification of the smart card information can be realized through the human-computer interaction interface of the mobile phone, which facilitates the use of the smart card.
  • FIG. 1 is a schematic view showing a mobile phone having a contactless smart card function in accordance with a preferred embodiment of the present invention.
  • Fig. 2 is a circuit diagram showing an example employed by a detecting unit in the portable device according to the present invention.
  • FIG. 3 is a flow diagram of one embodiment of a process for implementing automatic identification of reader types in the present invention. detailed description
  • Contactless smart card identification systems typically include a reader (or card reader and reader) and a contactless smart card or IC card.
  • the reader/writer transmits an oscillating signal having a frequency of, for example, 125 kHz or 13.5 MHz to supply electromagnetic energy to the IC card, and the other side communicates with the IC card using a radio frequency modulated signal having a frequency of, for example, 2.4 GHz.
  • a reader/writer, a card reader, and a reader refer to a device that reads information from a smart card and/or writes information to the smart card by means of wireless communication.
  • the IC card is packaged with a radio frequency modulation and demodulation unit, an antenna, a logic control unit, and a memory that are responsible for communicating with the reader through the RF modulation signal.
  • the radio frequency modulation and demodulation unit provides processing such as modulation and demodulation of signals.
  • the antenna is used for transmitting a radio frequency modulation signal to the reader and receiving the radio frequency modulation signal from the reader, and the basic form comprises a wire wound inductor antenna and a spiral microstrip antenna formed by imprinting or printing etching on the dielectric substrate, and the specific structure thereof The parameters are determined by factors such as carrier frequency, package form, performance, and assembly cost.
  • the memory often uses EEPR0M (Electrically Erasable and Programmable Read Only Memory), which stores information related to the use of the IC card, such as account number, amount, password, and cardholder identity, and can also store control information.
  • EEPR0M Electrically Erasable and Programmable Read Only Memory
  • the logic control unit is configured to control the radio frequency modulation and demodulation unit and data processing, and encode data, instructions and memory storage information conforming to the reader communication standard, and then sent to the radio frequency modulation and demodulation unit to modulate the transmission to read and write. Radio frequency modulation and demodulation The demodulated signal of the unit is decoded and stored in the memory.
  • the electromagnetic energy of the IC card is provided by the reader/writer, that is, when the IC card approaches the reader/writer, the oscillating signal emitted by the aforementioned reader/writer will generate an induced electromotive force on the inductor coil as the coupling element, through the rectification of the diode and the capacitor.
  • the filtering process produces a voltage sufficient to operate the IC card, powering the logic control unit and the RF modem unit.
  • the above identification system works on the principle that the reader sends the information to be sent to a modulated signal of a certain frequency (for example, 2.4 GHz), and when the IC card enters the working area of the reader, it is obtained. While oscillating the electromagnetic energy of the signal, the RF modulation signal is also received by the antenna, and the logic control unit demodulates and decodes the signal by the radio frequency modulation and demodulation unit to obtain corresponding commands and/or data.
  • a modulated signal of a certain frequency for example, 2.4 GHz
  • the control logic unit If it is a read command, the control logic unit reads the relevant information from the memory, encodes and modulates it and sends it to the reader through the antenna of the IC card, and the reader/writer performs corresponding processing; if it is a write command for modifying the information
  • the internal charge pump raises the working voltage caused by the control logic, and provides the content of the erased EEPR0M for rewriting. If it is judged that the corresponding password and authority do not match, an error message is returned.
  • control logic unit and the radio frequency modulation and demodulation unit are integrated on one chip.
  • control logic unit can also be implemented by a separate microcontroller.
  • contactless smart card technology can be found in various technical application specifications, such as the IS010536, ISO 15693, IS014443, and IS07816 standards for contactless smart cards, which are incorporated herein by reference and incorporated herein by reference. .
  • the principle of the present invention does not depend on the special structure of the mobile phone, and is fully applicable to other portable devices, such as MP3/MP4 players, personal digital assistants (PDAs), and handheld computers.
  • the present invention is not limited to the mobile phone in the following embodiments.
  • FIG. 1 is a schematic diagram showing a mobile phone having a contactless smart card function in accordance with a preferred embodiment of the present invention.
  • the mobile phone and the present invention Irrelevant structures and units are not described, but it will be apparent to those of ordinary skill in the art in the pertinent or similar art that this omission does not hinder or affect the understanding and implementation of the present invention.
  • a mobile phone 1 includes a detecting unit.
  • the detecting unit 11 is for detecting an oscillating signal emitted by the reader/writer 2, and the mounting position thereof includes, for example, but not limited to, an inner space surrounded by the outer casing wall of the mobile phone, the outer casing surface and the outer casing.
  • 2 shows an exemplary circuit diagram of the unit. Referring to FIG. 2, the circuit includes a parallel resonant circuit composed of a coil L1, a capacitor C1, and a C2. When the mobile phone is near the reader/writer 2, the reader/writer 2 transmits The oscillating signal generates an induced electromotive force on the coil L1.
  • the oscillating signal of the reader/writer 2 can generate a resonance signal in the circuit, and the signal is amplified by the diode D and amplified by the transistor T, and then output from the collector to the mobile phone controller.
  • the size can be made small, which is advantageous in reducing the volume and cost of the detecting unit. It is worth noting that the unit can also use other forms of signal detection circuits, such as series resonant circuits. Obviously, the specific circuit form should not be construed as limiting the scope of the invention.
  • the detecting unit 11 may comprise a plurality of resonant circuits or make the circuit parameters of the resonant circuit adjustable (for example, using variable capacitors and/or inductors) Variable coil).
  • the handset controller 12 is coupled to the detection unit 11.
  • the detection unit 11 has a signal output
  • the handset controller 12 will respond to trigger the RF circuit 13 to initiate communication with the reader/writer 2.
  • the connection here means that the input end of the mobile phone controller 12 is directly connected to the output end of the detecting unit 11 (for example, the output end of FIG. 2), and it can also be understood that the two are through other components such as capacitors or inductors or The circuit is coupled in a connected manner.
  • the meaning of the connection should be construed broadly in the broad sense unless otherwise stated.
  • the mobile phone controller 12 described here refers to the data processing or metering in the mobile phone.
  • Various processing units including but not limited to, for example, digital signal processors for baseband signal processing, encoder/decoders for video and audio signal processing, microprocessors or central processing units that control the operation of the entire handset, and dedicated Integrated circuits, field programmable gate arrays, etc.
  • the mobile phone controller 12 herein can be completely replaced with various processing units existing in these devices to implement the function of triggering the RF circuit 13 to initiate communication with the reader.
  • a processing unit to the portable device, which is specifically responsible for realizing the function of triggering the RF circuit 13 to start communication with the reader.
  • the mobile phone controller 12 can implement other functions related to the contactless smart card in addition to the functions of the mobile phone communication and the triggering of the RF circuit 13 to initiate communication with the reader/writer. For example, determining the operating parameters of the reader (such as the frequency of the oscillating signal and the type of communication protocol), modifying the information stored by the smart card (such as modifying the account name and password), and controlling the human-computer interaction process between the user and the identification system (such as entering passwords and transactions). The amount), etc., will be further described below.
  • the RF circuit 13 includes an antenna 131, a radio frequency modulation and demodulation unit 132, a memory 133, and a microcontroller 134.
  • the antenna 131 is used for transmitting and receiving radio frequency modulation signals between the radio frequency circuit 13 and the reader/writer 2.
  • the radio frequency modulation and demodulation unit 132 is responsible for performing modulation/demodulation and encoding/decoding processing on the signals transmitted and received by the antenna 131, if necessary, Also responsible for signal encryption and decryption, the memory 133 can employ various storage devices, such as EEPROM, flash memory, etc., in which computer instructions for controlling the operation of the RF circuit 13 and various information related to the use of the IC card can be stored, for example including but not Limited to personal identification information, business card information, address book, credit information (such as account number, password, medical card number, ID number), accounting information (the amount stored in the card), and the type and quantity of ordered goods.
  • various storage devices such as EEPROM, flash memory, etc.
  • control logic of the radio frequency circuit 13 is implemented by the microcontroller 134.
  • the control logic includes, for example, but not limited to: triggering the radio frequency modulation and demodulation unit 132 to start working, and controlling the processing mode of the transceiving signal (for example, reading and writing) 2 exchange
  • the communication protocol followed by the data, the modulation format of the transmitted signal, and the encoding format of the information, etc., the signal is encrypted/decrypted, the data transfer between the RF modem unit 132 and the memory 133 is controlled, and the memory 133 is read.
  • Write mode for control (such as read-only mode or readable and writable mode, etc.). To this end, as shown in FIG.
  • microcontroller 134 is coupled to radio frequency modulation and demodulation unit 132 and memory 133, respectively, which invoking computer instructions from memory 133 to implement the control logic described above.
  • radio frequency modulation and demodulation unit 132, memory 133, and microcontroller 134 may also be interconnected in a bus manner.
  • the microcontroller 134 is also in communication with the handset controller 12 via the interface circuit 15 to receive control commands from the handset controller 12 (eg, commands instructing the RF circuitry 13 to communicate with the reader/writer 2) and/or data ( The control of the radio frequency circuit 13 by the handset controller 12 is implemented, for example, by the user password information transmitted by the radio frequency circuit 13 to the reader/writer 2.
  • Microcontroller 134 can also transmit data (e.g., data received from reader/writer 2 via antenna 131) to handset controller 12 via interface circuitry 15.
  • the interface circuit 15 follows the IS07816 standard, that is, the SIM/PIM interface is employed.
  • a microcontroller as referred to herein is understood to be a variety of processing units responsible for data processing or computation, including but not limited to digital signal processors, microprocessors or central processing units, and application specific integrated circuits, field programmable gate arrays and the like.
  • the control logic of the radio frequency circuit 13 is implemented by the discrete microcontroller 134, but in other embodiments, the radio frequency modulation and demodulation unit 132 may also have corresponding control logic built therein.
  • the handset controller 12 will communicate with the radio frequency modulation and demodulation unit 132 via the interface circuit 15.
  • the encoding/decoding processing and signal encryption/decryption processing performed by the radio frequency modulation and demodulation unit 132 can also be implemented by the microcontroller 134.
  • the information related to the use of the smart card is not necessarily stored in the memory 133, for example, when the amount of data is large, it may be stored in another memory independent of the memory 133, such as a mobile phone memory connected to the mobile phone controller 12 ( Not shown).
  • the mobile phone display screen and keyboard 14 are connected to the mobile phone controller 12,
  • the user can communicate with the radio frequency circuit 13 by means of the handset controller 12 by using the human-machine interface of the mobile phone.
  • the user can input information such as a password, product type and quantity through the keypad of the mobile phone, and the information is sent to the microcontroller 134 via the handset controller 12, and then processed by the radio frequency modulation and demodulation unit 132 and then transmitted and/or stored via the antenna 131.
  • the user can also modify the password and other information stored in the memory 133 through the keypad of the mobile phone.
  • the radio frequency circuit 13 is packaged in the SIM/PB! card of the mobile phone to become a SIM/PIM card having a radio frequency modulation signal transceiving function.
  • the 133 also includes information related to the communication of the mobile phone (for example, IMSI, etc.), so that the SIM/PIM card has the functions of user identity authentication when the mobile phone communicates, and the like. The function of the reader to communicate. Since the current mobile phones are separated by the card, the way of encapsulating the RF circuit 13 in the SIM/PIM card has little change to the structure of the mobile phone.
  • the IMSI information and the IC card information can be bundled in this manner. Together, when the phone is reported lost, the failure of IMSI authentication will result in the natural failure of other functions (such as IC card function).
  • the radio frequency circuit 13 can also be packaged in the form of a SIM/PIM card.
  • the mobile phone provides two SIM/PIM card holders, and the radio frequency circuit 13 and the mobile phone SIM/PIM card are respectively disposed in different card holders.
  • the RF circuit 13 is secured within the handset (e.g., within the housing wall), and preferably, the RF circuitry 13 is coupled to the handset controller 12 via a SIM/PIM interface.
  • the handset controller 12 reads an operating parameter of one of the reader types from the handset memory.
  • the mobile phone controller 12 instructs the radio frequency circuit 13 to correspond to the reader/writer class via the interface circuit 15. Type of processing mode works.
  • step 33 when the RF circuit 13 receives the response signal returned by the reader, it is sent to the handset controller 12 via the interface circuit 15.
  • step 34 the mobile phone controller 12 confirms whether the response signal matches the preset value. If yes, the process proceeds to step 35, and the reader/writer is confirmed to be of the current type. Otherwise, the process returns to step 31, and the mobile phone controller 12 reads the next. The working parameters of the reader type.
  • the radio frequency circuit 13 is powered by the mobile phone battery, for example, the mobile phone battery passes through the power management unit (not shown) of the mobile phone and the radio frequency modulation and demodulation unit 132, the memory 133 and the micro in the radio frequency circuit 13. Controllers 134 and the like are connected to provide appropriate voltage/current to these active operating cells. Since the energy required for the RF circuit 13 is not obtained by the inductor coil in the detecting unit as the coupling element but by the mobile phone battery, the size of the inductor coil in the detecting unit can be reduced.
  • the identity information of the user can be stored in the memory 133 of the radio frequency circuit 13.
  • the oscillating signal transmitted by the access control system reader will form a resonance signal at the detecting unit 11, and the signal is sent to the handset controller 12.
  • the handset controller 12 sends an instruction via the interface circuit 15 to the microcontroller 134 in the radio frequency circuit 13 instructing it to activate the radio frequency circuit 13 to transmit the identity information to the reader/writer.
  • the microcontroller 134 reads the identity information from the memory 133 and sends it to the radio frequency modulation and demodulation unit 132.
  • the radio frequency modulation and demodulation unit 132 encodes and modulates the identity information and transmits it via the antenna 131.
  • the reader demodulates and decodes the signal, and then sends the processed identity information data to the application system, and the application system verifies the data, and if allowed, allows the user to enter and Information such as the user's entry and exit time is recorded, otherwise the user is blocked.
  • the above-mentioned mobile phone with a contactless smart card function can also be used in a consumer activity such as catering, in which case the RF circuit 13 is equivalent to a catering card.
  • the user can input a menu, a quantity, etc. through the man-machine interface of the mobile phone (ie, the display screen and the keyboard 14) in advance.
  • the information is instructed by the handset controller 12 to be written to the memory 133 by the microcontroller 134.
  • the mobile phone controller 12 is activated by the signal generated by the detecting unit 11 by swiping the card on the POS machine of the restaurant, and the RF circuit 13 is instructed to send the menu and the quantity stored in the memory 133 to the POS machine.
  • the POS machine deducts the corresponding amount from the amount in the memory 133 based on the information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)

Abstract

Un dispositif portable à fonction carte intelligente sans contact comprend : une unité de détection adaptée pour répondre au signal émis par le lecteur/enregistreur; une unité de traitement connectée à l'unité de détection, et un circuit RF adapté pour communiquer avec le lecteur/enregistreur, caractérisé en ce que l'unité de traitement émet un signal de démarrage en réponse au signal de détection, afin de démarrer le traitement de communication entre le circuit RF et le lecteur/enregistreur. Le système peut réaliser automatiquement et rapidement le balayage de la carte à travers le dispositif portable en intégrant la fonction carte intelligente dans le dispositif portable et, sur la base de la capacité de traitement du dispositif portable, de manière à intégrer de nombreuses cartes intelligentes, il permet de réaliser la carte réellement 'universelle'. Le système peut également réaliser la fonction entrée et amendement des informations de la carte intelligente, via l'interface homme-machine du téléphone mobile.
PCT/CN2006/000746 2006-04-20 2006-04-20 Dispositif portable à fonction carte intelligente sans contact WO2007121607A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2006/000746 WO2007121607A1 (fr) 2006-04-20 2006-04-20 Dispositif portable à fonction carte intelligente sans contact
CNA2006800549794A CN101467360A (zh) 2006-04-20 2006-04-20 一种具有非接触式智能卡功能的便携式设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/000746 WO2007121607A1 (fr) 2006-04-20 2006-04-20 Dispositif portable à fonction carte intelligente sans contact

Publications (1)

Publication Number Publication Date
WO2007121607A1 true WO2007121607A1 (fr) 2007-11-01

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Application Number Title Priority Date Filing Date
PCT/CN2006/000746 WO2007121607A1 (fr) 2006-04-20 2006-04-20 Dispositif portable à fonction carte intelligente sans contact

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CN (1) CN101467360A (fr)
WO (1) WO2007121607A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN102376125A (zh) * 2011-10-17 2012-03-14 北京百纳威尔科技有限公司 移动终端及基于移动终端的一卡通系统

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CN201527655U (zh) * 2009-10-23 2010-07-14 厦门盛华电子科技有限公司 具有手机刷卡距离检测功能的非接触ic卡双频读卡装置
CN112566102B (zh) * 2020-12-09 2022-07-01 湖南新云网科技有限公司 一种基于智能卡的通信终端、通信系统及通信方法

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CN1604130A (zh) * 2003-09-30 2005-04-06 索尼爱立信移动通信日本株式会社 移动终端设备
CN1656505A (zh) * 2002-04-08 2005-08-17 诺基亚有限公司 具有智能卡中断功能的移动终端
JP2005328658A (ja) * 2004-05-14 2005-11-24 Sony Corp 保護回路およびこれを有する通信装置ならびに情報通信端末

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Publication number Priority date Publication date Assignee Title
JP2002345037A (ja) * 2001-05-17 2002-11-29 Sony Corp 携帯通信装置及び通信システム並びにその通信方法
CN1656505A (zh) * 2002-04-08 2005-08-17 诺基亚有限公司 具有智能卡中断功能的移动终端
CN1604130A (zh) * 2003-09-30 2005-04-06 索尼爱立信移动通信日本株式会社 移动终端设备
JP2005328658A (ja) * 2004-05-14 2005-11-24 Sony Corp 保護回路およびこれを有する通信装置ならびに情報通信端末

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102376125A (zh) * 2011-10-17 2012-03-14 北京百纳威尔科技有限公司 移动终端及基于移动终端的一卡通系统

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