WO2002017598A1 - Dispositif de connexion par acces commute d'un telephone mobile au moyen d'un bus serie universel - Google Patents

Dispositif de connexion par acces commute d'un telephone mobile au moyen d'un bus serie universel Download PDF

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Publication number
WO2002017598A1
WO2002017598A1 PCT/KR2000/001561 KR0001561W WO0217598A1 WO 2002017598 A1 WO2002017598 A1 WO 2002017598A1 KR 0001561 W KR0001561 W KR 0001561W WO 0217598 A1 WO0217598 A1 WO 0217598A1
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WO
WIPO (PCT)
Prior art keywords
usb
data
connector
signal
packet
Prior art date
Application number
PCT/KR2000/001561
Other languages
English (en)
Inventor
Hyung-Bae Kim
Original Assignee
Itechsolution 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 Itechsolution Co., Ltd. filed Critical Itechsolution Co., Ltd.
Priority to AU2001224088A priority Critical patent/AU2001224088A1/en
Publication of WO2002017598A1 publication Critical patent/WO2002017598A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/323—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the physical layer [OSI layer 1]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices

Definitions

  • the present invention relates generally to a device for connecting a mobile communication device such as a PCS (Personal Communication Service), a portable phone, and an IMT2000 terminal to an information terminal such as a PC (Personal Computer) and a laptop computer, for connection to the Internet or a computer network, and in particular, to a device for connecting a mobile communication device to an information terminal using a USB (Universal Serial Bus).
  • a mobile communication device such as a PCS (Personal Communication Service)
  • a portable phone such as a portable phone
  • IMT2000 terminal such as a PC (Personal Computer) and a laptop computer
  • USB Universal Serial Bus
  • ARPANET Advanced Research Project Agency Network
  • Information terminals including PCs and laptop computers are provided with network cards or MODEM cards to access the Internet or a computer network.
  • Development of the mobile communication technology enables Internet connection regardless of place.
  • a wireless MODEM is used or the serial port of the laptop computer is connected to the data communication port of a mobile phone.
  • the transmission rate of the computer serial port of 115Kbps or below causes a bottleneck in high-speed radio data transmission.
  • Another disadvantage with the method utilized above is exhibited when the mobile phone is short of battery capacity and as a result, the connection between the mobile phone and the laptop computer is impossible because power is not supplied to the serial port.
  • a connector for connection of the computer serial port is moreover a D-SUB 9 pin connector or a D-SUB 25 pin connector. Therefore, some mobile phones cannot be connected physically to computers according to the types of serial port connectors in the data communication cables of the mobile phones.
  • wireless MODEMs have the wireless communication function therein and thus require no separate mobile communication equipment.
  • a user just installs a wireless MODEM in his laptop computer and performs specific setting in order to access the Internet wirelessly.
  • the wireless MODEM is expensive.
  • the present invention has the following objects.
  • An object is to enable high-speed wireless data communication in an information terminal.
  • Another object is to continue data communication by charging the battery of a mobile communication device when the battery runs out.
  • a further object is to solve the conventional problem of impossible connection between a mobile communication device and an information terminal according to the type of a USB connector of the information terminal.
  • Still another object is to connect a mobile communication device to an information terminal using a USB for access to the Internet or a network from the information terminal.
  • the connecting device includes a first connector for connecting with the USB port of the information terminal, a second connector for connecting with a data communication port of the mobile communication device, and a signal converter for converting a USB signal received through the first connector to a data communication signal suitable for the mobile communication device, outputting the data communication signal to the mobile communication device through the second connector, converting the data communication signal received through the second connector to the USB signal suitable for the information terminal, and outputting the USB signal to the information terminal through the first connector.
  • UBS universal serial bus
  • FIG. 1 illustrates different devices including a computer, a telephone, and a printer connected to one another via USBs;
  • FIG. 2 illustrates a typical USB;
  • FIG.3 illustrates a connection of a mobile phone with a USB port of a laptop computer according to the present invention
  • FIG. 4 is a block diagram of a USB signal converter for conversion between a
  • FIG. 5 illustrates a module for charging the mobile communication device via a US power supply line according to the embodiment of the present invention.
  • FIG. 6 illustrates a connector for the data communication port of the mobile communication device and a connector for the USB port of the information terminal according to the embodiment of the present invention.
  • USB is the standard connection port for connecting peripherals of computers, developed by major computer-related companies including Intel, Compaq, Hewlett Packard, Microsoft, Lucent, NEC (Nippon Electric Company), Phillips, etc.
  • USB offers a simple way to connect peripherals through an external port without opening the chassis of the system.
  • the concurrent support of peripherals connected to a single USB port enables use of a plurality of peripheral applications such as printers, scanners, digital cameras, and speakers.
  • FIG. 1 illustrates an example configuration of a plurality of devices connected via USBs.
  • a computer 111, USB hubs 112 and 113, a telephone 114, a printer 115, a camera 116, and a touch pad 117 are connected through a USB network.
  • USB automatically recognizes connection of a peripheral and installs it, which makes users to readily add a peripheral device by plug-and-play. That is, they can connect peripherals to one another as far as they support USB. Since USB provides port expansion through a USB hub, the USB-supporting devices can be used regardless of the number of ports.
  • USB operates at a full speed of 12Mbps and at a low speed of 1.5Mbps.
  • a newer version (USB version 2.0) is in the works that will raise the speed 40 times — to 480Mbps.
  • USB 2.0 ensures backward compatibility with cables, connectors, software that operate according to USB 1.1.
  • FIG. 2 illustrates the structure of a USB cable.
  • the USB cable includes four lines. Power is supplied to a device through a power line VBUS and a ground line GND of the USB cable. VBUS is +5V at a source. Data is transferred by serial transmission of differential signals D+ and D-.
  • FIG. 3 is a schematic view illustrating a mobile phone connected with the USB port of a laptop computer for data communication such as Internet connection according to an embodiment of the present invention.
  • the data communication port for example, UART (Universal Asynchronous Receiver Transmitter of a mobile phone 311 is connected with the USB port of a laptop computer 312.
  • a data signal is transmitted from the laptop computer 312 to the mobile phone 311 by a module for converting a USB signal to a data communication signal, for example a UART signal and the UART signal is converted to a radio signal in the mobile phone 311, to thereby access the Internet. That is, the USB signal of the laptop computer 312 is emulated to the UART signal of the mobile phone 311 in order to interface the laptop computer 312 with the mobile phone 311.
  • a charger of the mobile phone 311 can be charged by connecting the power output of the USB port to the charging power input of the data communication port of the mobile phone 311. In no case, therefore, full power consumption of the mobile phone 311 blocks Internet connection.
  • This function can be performed by a connecting device including a USB connector, a data communication connector for the mobile phone 311, a USB signal converter, a charging circuit, and a cable 313 according to the present invention.
  • FIG. 4 is a block diagram of a USB/UART signal converter for converting a
  • USB signal from the USB port of a laptop computer to a UART signal for the data communication port of a mobile phone and vice versa.
  • the USB/UART converter includes a USB differential signal/packet conversion means for converting a USB differential signal received from a
  • USB transceiver & receiver module 417 is used as the USB differential signal/packet conversion means.
  • the USB/UART signal converter also includes a USB data extraction/packet conversion means for extracting data from the converted USB packets received from the
  • USB differential signal/packet conversion means and converting input data to USB packets.
  • a DPLL 416 is used as the USB data extraction/packet conversion means.
  • the USB/UART signal converter further includes a data communication signal conversion/extraction means for converting the extracted data received from the USB data extraction/packet conversion means to the data communication signal, outputting the data communication signal via the data communication connector of the mobile phone, extracting data from a data communication signal received via the data communication connector, and outputting the extracted data to the USB data extraction/packet conversion means.
  • a UART interface 411 is used as the data communication signal conversion extraction means.
  • Signals input/output to/from the left end of the UART interface 411 includes Tx (Transfer), Ri (Ring Indicator), RTS (Request To Send), DSR (Data Set Ready), DTR (Data Terminal Ready), Rx (Receive), DCD (Data Carrier Detect), and CTS (Clear To
  • the USB transceiver & Receiver 417 converts USB differential signals D+ and D- received from the USB port of the laptop computer to digital USB packets.
  • the DPLL 416 extracts data from the USB packets with USB control codes removed from the USB packets and feeds the extracted data to an Rx buffer 413.
  • the data is transferred to the UART interface 411 by an Rx write signal applied from an Rx register 415.
  • the UART interface 411 converts the data to a UART Tx signal that is an asynchronous signal by adding a start bit and a termination bit to the data and transmits the UART Tx signal to the mobile phone via the data communication port.
  • the UART interface 411 For conversion of a UART signal to a USB signal, the UART interface 411 removes a start bit and a termination bit from a UART Rx signal received from the mobile phone via the data communication port.
  • a Tx buffer 412 receives the data without the start bit and the termination bit from the UART interface 411 in response to a Tx read signal generated from the UART interface 411.
  • the DPLL 416 converts the data received from the Tx buffer 412 to USB packets by adding USB control codes to the data and packetizing the resulting data.
  • the USB transceiver & receiver 417 converts the USB packes to USB differential signals D+ and D- and transmits the USB differential signal to the laptop computer via the USB port.
  • FIG. 5 illustrates a charger module 511 for charging the mobile phone using a power supply line NIN of a USB.
  • the USB power supply line of a laptop computer is connected to the power input NIN of the above circuit and the charging power line of the data communication port of the mobile phone is connected to a power output line VOUT.
  • the charger module 511 includes an FET for switching on/off the power input and an error amplifier 514 for controlling the operation of the FET according to a voltage level at the power output line VOUT.
  • a reference voltage fed to a non-inverting input terminal of the error amplifier 514 is used to stably output an output voltage of the error amplifier 514.
  • a voltage (e.g., 5V) input to the power input line NIN from the USB port of the computer is converted a voltage (e.g., 4.2V) for use in a charger of the mobile phone.
  • a current limiting circuit 512 functions to maintain the output current at or below 500mA. If the circuit operates at high temperature, a thermal shutdown module 513 may be added as shown in FIG. 5 in order to solve temperature increase-causing problems.
  • The- error amplifier 514 further controls the operation of the FET according to signals received from the current limiting circuit 512 and the thermal shutdown module 513.
  • FIG. 6 illustrates a connector 611 for the data communication port of the mobile phone and a connector 612 for the USB port of the laptop computer according to the embodiment of the present invention.
  • the connector 611 is connected to the data communication port of the mobile phone and the connector 612, to the USB port of the laptop computer.
  • the modules shown in FIGs. 4 and 5 can be built in the USB connector 612 of the laptop computer as shown in FIG. 6. However, it is obvious to those skilled in the art that the modules can be located at any position between the connector 611 and the connector 612.
  • the present invention pertains to a device and method for connecting an information terminal such as a laptop computer to the Internet or a computer network.
  • the present invention overcomes the problems encountered with the known connecting method utilizing a wireless MODEM or applying the serial port of a laptop computer to a mobile phone and exhibits the following advantages.
  • USB full speed is 12Mbps and the USB low speed is 1.5Mbps according to USB 1.1 specifications.
  • USB version 2.0 is in the works that will raise the speed 40 times — to 480Mbps, enabling high-speed wireless data transfer.
  • the mobile phone can be charged through the power line of the USB and thus network connection is available although the battery of the mobile phone runs out, which is impossible in the conventional connecting method using the serial port.
  • USB connector for the computer is a D-SUB 9 pin connector or a D-SUB 25 pin connector
  • user of a USB connector according to the present invention solves this problem since USB ports are identical.
  • the present invention intends to ensure connection to the Internet and a network by connecting a mobile communication device with a data communication port such as a PCS and a cellular phone to an information terminal with a USB port such as a PC, a PDA (Personal Digital Assistant), an HPC (Handheld PC), and a web pad.
  • a mobile communication device with a data communication port such as a PCS and a cellular phone
  • an information terminal with a USB port such as a PC, a PDA (Personal Digital Assistant), an HPC (Handheld PC)
  • HPC High-held PC

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un dispositif de connexion par accès commuté entre un téléphone mobile et un appareil de traitement d'informations, tel qu'un ordinateur personnel, comprenant un bus série universel (USB). Ce dispositif de connexion comporte un premier connecteur connecté au port USB de plusieurs dispositifs périphériques, ainsi qu'un second connecteur connecté à un port de communication de données du téléphone mobile. Il comprend également un convertisseur de signaux permettant de convertir un signal USB entré à partir du premier connecteur en signal de communication de données pour le téléphone mobile de manière à acheminer le signal converti vers le téléphone mobile via le second connecteur, et de convertir le signal de communication de données entré à partir du second connecteur en signal USB de façon à acheminer le signal converti vers l'appareil de traitement d'informations via le premier connecteur.
PCT/KR2000/001561 2000-08-19 2000-12-29 Dispositif de connexion par acces commute d'un telephone mobile au moyen d'un bus serie universel WO2002017598A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001224088A AU2001224088A1 (en) 2000-08-19 2000-12-29 Mobile phone dial-up connecting device using a usb

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020000048054A KR20020014868A (ko) 2000-08-19 2000-08-19 Ｕｓｂ를 이용한 이동전화 다이얼업 접속장치
KR2000/48054 2000-08-19

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Publication Number Publication Date
WO2002017598A1 true WO2002017598A1 (fr) 2002-02-28

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PCT/KR2000/001561 WO2002017598A1 (fr) 2000-08-19 2000-12-29 Dispositif de connexion par acces commute d'un telephone mobile au moyen d'un bus serie universel

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KR (1) KR20020014868A (fr)
AU (1) AU2001224088A1 (fr)
WO (1) WO2002017598A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2838908A1 (fr) * 2002-04-18 2003-10-24 France Telecom Systeme et procede de telechargement d'informations dans un telephone mobile et telephone mis en oeuvre dans ce systeme
EP1598743A2 (fr) * 2004-05-18 2005-11-23 Gil-Jong Kang Câble de communication de données pour la connexion entre un terminal mobile de communication et un ordinateur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100550783B1 (ko) * 2003-05-21 2006-02-08 엘지전자 주식회사 무선 통합 전화기 운용 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990038989U (ko) * 1998-04-02 1999-11-05 윤종용 비 usb 주변장치의 인터페이싱 장치
KR19990078589A (ko) * 1999-06-15 1999-11-05 이성민 Ｕｓｂ허브가내장된ｕｓｂ케이블유니트
JP2000059461A (ja) * 1998-08-05 2000-02-25 Digital Stream:Kk データ変換装置
JP2000165467A (ja) * 1998-11-25 2000-06-16 Hitachi Ltd ユニバーサル・シリアルバス変換システム
JP2000163175A (ja) * 1998-11-27 2000-06-16 Mitsumi Electric Co Ltd 変換コネクタ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990038989U (ko) * 1998-04-02 1999-11-05 윤종용 비 usb 주변장치의 인터페이싱 장치
JP2000059461A (ja) * 1998-08-05 2000-02-25 Digital Stream:Kk データ変換装置
JP2000165467A (ja) * 1998-11-25 2000-06-16 Hitachi Ltd ユニバーサル・シリアルバス変換システム
JP2000163175A (ja) * 1998-11-27 2000-06-16 Mitsumi Electric Co Ltd 変換コネクタ
KR19990078589A (ko) * 1999-06-15 1999-11-05 이성민 Ｕｓｂ허브가내장된ｕｓｂ케이블유니트

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2838908A1 (fr) * 2002-04-18 2003-10-24 France Telecom Systeme et procede de telechargement d'informations dans un telephone mobile et telephone mis en oeuvre dans ce systeme
EP1598743A2 (fr) * 2004-05-18 2005-11-23 Gil-Jong Kang Câble de communication de données pour la connexion entre un terminal mobile de communication et un ordinateur
EP1598743A3 (fr) * 2004-05-18 2006-09-13 Gil-Jong Kang Câble de communication de données pour la connexion entre un terminal mobile de communication et un ordinateur

Also Published As

Publication number Publication date
AU2001224088A1 (en) 2002-03-04
KR20020014868A (ko) 2002-02-27

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