WO1996003810A1 - Appareil de transmission de donnees pour reseau de communication sans fil - Google Patents

Appareil de transmission de donnees pour reseau de communication sans fil Download PDF

Info

Publication number
WO1996003810A1
WO1996003810A1 PCT/IT1995/000116 IT9500116W WO9603810A1 WO 1996003810 A1 WO1996003810 A1 WO 1996003810A1 IT 9500116 W IT9500116 W IT 9500116W WO 9603810 A1 WO9603810 A1 WO 9603810A1
Authority
WO
WIPO (PCT)
Prior art keywords
card
antennae
radio
adaptor
personal computer
Prior art date
Application number
PCT/IT1995/000116
Other languages
English (en)
Inventor
Andrew Bud
Original Assignee
Olivetti Telemedia S.P.A.
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 Olivetti Telemedia S.P.A. filed Critical Olivetti Telemedia S.P.A.
Publication of WO1996003810A1 publication Critical patent/WO1996003810A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • 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

Definitions

  • the present invention relates to a data transmission apparatus for a cordless communication network, comprising a data processor and electronic transmission means suitable for connection to the said processor to enable it to receive and transmit data by radio in accordance with a predetermined transmission standard.
  • WO91/04461 is a portable personal computer consisting of a base chassis that includes a keyboard for data entry, a central data processing unit, a mass storage unit for storage of data and programs, and a plurality of electronic circuits for handling of the data and management of the programs.
  • a display unit consisting of a screen and associated control circuits is mounted on an auxiliary chassis hinged to the base chassis and pivotable in relation to it.
  • a cellular telephone and an interface unit inclusive of microphone and loudspeaker Housed in special compartments of the base chassis are a cellular telephone and an interface unit inclusive of microphone and loudspeaker.
  • the cellular telephone connected to the interface unit and to the electronic circuits permits communication over a telephone channel by means of an extractable, rod-type antenna, mounted on the auxiliary frame, of data and messages with another personal computer of the same type.
  • This apparatus must necessarily comprise a modulator-demodulator circuit (modem) , to modulate and demodulate the signals sent and received by the cellular telephone. This makes the portable personal computer bulkier and heavier.
  • modem modulator-demodulator circuit
  • a cellular radio telephone comprising a main unit containing a microprocessor, a memory, a tranmitter/receiver circuit for reception and transmission through an antenna of radio signals processed by the microprocessor in accordance with standard programs housed in memory.
  • a telephone receiver inclusive of microphone, a loudspeaker and an audio amplifier is connected through a cable to the main unit.
  • the main unit also includes a housing with a coupling interface for an extractable memory card, of the smart-card type, containing stored information for selection of radio functions and identification of the telephone user.
  • the technical problem that this invention intends to solve is that of providing a very compact, light-weight apparatus, making it easy for the user to carry and simple to use, capable of communicating via radio with a cordless communication network and respectively transmitting in digital form voice communications and data processed by a personal computer.
  • the technical problem described above is solved by the data transmission apparatus for a cordless communication network, characterized by transmission means which includes an adaptor module adapting the processor for operation in accordance with a predetermined communication standard, and a radio module connected to the adaptor module for transmission of data to the network.
  • Fig.l is a block diagram of the apparatus in accordance with the invention
  • Fig.2 is a transmission module that may be coupled with the apparatus of Fig.l;
  • Fig.3 is a block diagram of the adaptor card circuit
  • Fig. is a block diagram of the radio module
  • Fig.5 is a view of the radio module, in accordance with this invention.
  • Fig.6 illustrates assembly of the antennae on the radio module of Fig.5;
  • Fig.7 is a variation on the antennae assembly of Fig.6;
  • Fig.8 is a preferred, but by no means limiting, embodiment of the apparatus of Fig.l;
  • Fig.9 is one form of application of the module of
  • Fig. 2 to a telephone receiver
  • Fig.10 is one application of the module of Fig.2 to a telephone handset.
  • the number 1 is used to indicate a generic data processor, such as for example a personal computer.
  • the personal computer 1 may be either desk-top type or portable type, also known as a lap-top.
  • the computer 1 is housed in a case 3 and substantially includes a keyboard 5, for data entry, a plurality of electronic circuits 7 arranged on boards 8, housed inside the case 3, a display device 9, for display in a known way of the results of the processing work and a non-volatile mass memory unit 11, of the hard disk type, for example, for storage of data and programs.
  • the plurality of electronic circuits 7 includes at least one microprocessor central unit, not visible, and a bus 10 for input/output of the data in digitized form.
  • the processor 1 is also equipped with special programs for transmission/reception of digital data through a radio communication network.
  • the keyboard and the display may be physically separate from each other and from the processor case, as in the common desk-top personal computers.
  • the keyboard is integrated in the computer, whereas the display is mounted on a flat structure hinged to the case with the additional function of lid, as in the common portable personal computers.
  • a conventional personal computer isolated in terms of operation from other computers of the same type, into a device capable of conversing with the world outside, without using cable connections, and without using telephone lines or channels operating via radio links
  • the transmission unit 15 may, at the operator's discretion, be connected to the computer 1 at any time, irrespective of the location, to permit transmission and reception via radio of processed data, each time the operator considers it necessary.
  • a housing 18 has been included in the case of the personal computer 1, in the shape of a thin slot designed to receive the transmission unit 15, which, when inserted in the housing 18, is electrically connected with the computer's input-output bus 10.
  • the transmission unit 15 includes an adaptor module 20, consisting of a first printed circuit board 20, that contains the functional electronic components to adapt the signals produced by the personal computer to a radio transmission standard, for example the DECT ( Digital European Cordless Telecommunication) , or GSM (Global System Mobile) standard, and a second card, or radio module 22, that contains the circuits for radio transmission of the signals adapted previously by the module 20.
  • a radio transmission standard for example the DECT ( Digital European Cordless Telecommunication) , or GSM (Global System Mobile) standard
  • radio module 22 that contains the circuits for radio transmission of the signals adapted previously by the module 20.
  • the radio module operates in a frequency band of between 1880 and 1900 MHz, on ten channels spaced at 1.728 MHz intervals.
  • Radio communications between different radio modules 22, belonging to different personal computers in the transmission network occur in a hybrid time and frequency multiplexing system (TDM/FDM) , with "double simplex” and “duplex” connections. Transmission takes place within time cycles or "frames' with a duration of, for example, 10 ms, divided (for example) into 24 slots, half of which are used for transmission and the other half for reception.
  • TDM/FDM hybrid time and frequency multiplexing system
  • the adaptor card 20 can be connected to the radio module 22 through a female connector 24 fitted on the card 20 and a corresponding male connector 25, mounted on the radio module 22.
  • the adaptor card 20 may be connected with the input-output bus 10 of the processor 1 through a connector 27 located at the internal extremity of the housing 18. Allowance has been made for a plurality of connection pin-holes 28 for this purpose on one extremity 29 of the card 20.
  • the pinholes 28 and the connector 27 may be replaced by proximity couplers, without any physical contact, of the capacitive, electromagnetic or optical type, for example IR rays.
  • the adaptor module 20, rather than directly through the two connectors 24 and 25, may be connected to the radio module 22 by means of a cable 30, of suitable length, to permit the radio module 22 to be set in the best position for most effective capture of the radio signals emitted by a remote transmitter.
  • the cable 30 has two end connectors 32,34 suitable for connection respectively to each of the connectors 24 and 25.
  • the adaptor module 20 includes (Fig.3) a circuit 40 for interface between the card 20 and the personal computer 1 (fig.l).
  • the circuit 40 (Fig.3) includes a memory 42 and registers 43, with addresses managed by appropriate software parameters and guaranteeing that the interface circuit 40 is highly effective and flexible.
  • the circuit 40 is connected through a bidirectional bus 46 to other circuits on the card acting to adapt the data processed by the processor 1 in the form of digital signals to the particular transmission standard chosen.
  • the bus 46 a 16-bit bus for example, transfers data, addresses and control signals.
  • Connected in particular to the bus 46 are a RAM memory 50 for storage of the operating programs and transmission and reception data, a circuit 52 controlling the bus 46 and a digital processor 54 for control and management of the entire module 20, on the basis of the timing of an oscillator 58.
  • a circuit 48 providing interface with the radio module 22 is also connected to the bus 46.
  • the circuit 48 interfacing the radio module 22 works in accordance with the DECT specifications to control and maintain synchronism of the data received by the radio 22 and to make any reception error corrections required. More particularly, the processor 54 manages transmission and reception of data arranged serially to DECT specifications, performs control and management of the frequencies of the various transmission carriers, controls synchronism of the slots, and finally detects level of the signals received before selecting through a special algorithm one or the other of two antennae, described later, in order to optimize reception in accordance with the "space diversity" principle.
  • the bus 46 transfers the power supply voltages directly from the processor 1 to the radio 22, whereas a suitable logic switch housed in the circuit 52 controlling the bus 46 can, if necessary, interrupt this power line if there is allowance for batteries to power the card 20 or both the modules 20 and 22.
  • Fig. 4 describes a preferred but not exclusive embodiment of the radio module 22 circuit.
  • the radio module 22 is built on a printed circuit support base 60, partly visible in Fig. 5, with the components arranged on both sides using ASIC technology to give large-scale component integration in an extremely limited area.
  • the printed circuit 60 is enclosed in a box or case 62 in two halves 63,64, of extremely small dimensions for this application.
  • the radio module occupies an area of approximately 54 x 62 x 11 mm.
  • the inner surface of the halves 63 and 64 is rendered electrically conductive by way of galvanic metalization or application of a thin film of metal, such as aliminiu for example.
  • the contacts of the connector 25 are connected to an input-output circuit 65 (Fig. 4) realized using large-scale integration ASIC technology, and containing a gate array for selection and sending of signals to the various components of the circuit.
  • the circuit 65 is connected to a modulator-demodulator circuit 66, comprising one or more medium frequency stages.
  • the circuit 66 has a dual output 66a, 66b, used for transmission and reception respectively.
  • the outputs 66a and 66b are connected to a deflector 67 and thus to medium frequency IF circuits with associated filters and to a mixing circuit 68.
  • the mixing circuit 68 aided by a PPL (Phase Locked Loop) conversion circuit 69, is used to convert the medium frequency signal into a high frequency signal, suitable for transmission via either one of the two antennae 70,71.
  • the IF circuits, the mixing circuit 68 and the conversion circuit 69 are used in both transmission and reception, as they can be selected and connected to the transmission line TX, or to the reception line RX by means of the deflector 67.
  • 70,71 is an front end amplifier circuit 73, comprising a power amplifier 74 for transmission and a pre-amplifier
  • the deflector switches 67 and 76 are controlled by special signals received from the card 20 on a conductor
  • each of the antennae 70,71 (Figs. 5,6) is produced using an L-shaped, sheet conductor 80, and attached on the outside to two lateral surfaces 81,82 adjacent to the box 62.
  • the conductor element 80 is embedded in a bar 84 of synthetic material, transparent to high frequency electromagnetic radiation.
  • connection element 86 comprising a metal post 85, integral with the bar 84 and electrically connected at one end 851 to the conductor 80.
  • the post 85 exits perpendicularly from the short side
  • connection element 86 also comprises a sleeve 89 integral with the bar 84 and a support 91 attached to the board 60.
  • the sleeve 89 circumscribes the post 85 concentrically and is inserted with slight pressure into a corresponding hole 90 in the support 91 bearing the ferrule 88.
  • the sleeve 89 is replaced by a pin 891 (Fig.7) integral with the bar 84 and parallel with the post 85. The pin 891 inserts into a corresponding hole in the box 62.
  • a tooth 92 integral with the long end 93 of the bar 84, engages in a corresponding notch 94, made in the thickness of the side wall 82.
  • the tooth 92 prevents the long side 93 of the antenna from sliding parallel with the post 85, grazing against the side wall 82 and becoming detached accidentally from the box 62.
  • the antennae 70,71 may be removed and substituted with other antennae, rod antennae for example, each of which inserted in the corresponding ferrule 88.
  • INDUSTRIAL APLLICABILITY Fig.8 is an example of application of the transmission unit 15 on a commercial personal computer 100, for example the OLIVETTI PHYLOS model.
  • the computer 100 is equipped with a housing 102 in one side 104.
  • the housing 102 extends inside the computer casing and includes a connection element, not visible, such as the connector 10 of Fig.l, connecting the unit 15 to an input-output bus, again not visible, of the computer.
  • the adaptor module 20 is fitted into the housing 102, whereas the radio module 22, connected to the adaptor module 20 by means of a cable 105, is attached by an elastic clip fastener 106 to a part of the computer casing, to the lid-display 107 for example.
  • the radio module does not interfere with the work of the operator and may be disposed in the most suitable position for optimum reception of radio signals.
  • the unit 15 may be inserted in the housing 102 in its complete form, i.e. with the adapter module 20 connected directly to the radio module 22.
  • the transmission unit 15 On the preceding pages, the transmission unit 15
  • FIG. 1 was described, separate and distinct from data processing apparatuss, independent and portable, consisting of the combination of an adaptor module 20 with a radio module 22.
  • Fig.9 illustrates another application of the transmitter module 15 in combination with a passive telephone receiver 110, i.e. with only a microphone 112, a loudspeaker 114, and a voice amplifier circuit 115, connected internally to both the microphone and the loudspeaker 114.
  • a receiver connection cable 116 with a connector 117, provides connection of the receiver 110 to the adaptor module 20, in turn inserted in a personal computer 120.
  • the receiver 110 has a housing 118 designed for the radio module 22.
  • the personal computer 120 includes circuits, not illustrated, for voice management of a known type and not explained in detail in this description, which receive the voice signals in analog form from the receiver 110 and convert them to digital signals, subsequently sent via the adaptor module 20 and the cable 116 to the radio module 22 for transmission by radio. Similarly in reception, digital signals representing a voice communication received by the radio module 22, are sent along the cable 116 to the personal computer 120 and from here, after conversion to analog signals, to the receiver 110.
  • Fig.10 illustrates a further application of the adaptor 20 and radio 22 modules.
  • a portable handset 130 includes a microphone 131, a loudspeaker 132, the associated amplification circuit similar to the one 115 used for the receiver 110 of Fig.9.
  • the handset 130 includes a display 133, a telephone keypad 134, with associated handler circuits, controlled in somes cases by a microprocessor. These circuits are of a known type and are not shown in Fig.10 for the sake of simplicity.
  • the adaptor 20 and radio 22 modules may be inserted in a housing 135, which includes a connector 136 to receive the end 29 (Fig. 2) of the card 20.
  • the radio module 22 is connected directly to the card 20 through connectors of its own, as described in the foregoing.
  • the handset 130 also includes a housing 137 for batteries for independent power of the handset's circuits and the modules 20 and 22.
  • the handset 130 can therefore communicate via radio with an apparatus of the type described in Fig.l, or in Fig.8, in which the respective personal computers include the circuits and programs for voice management. It remains understood that the data transmission apparatus for a cordless communication network, in accordance with this invention may be subject to changes, additions or substitutions of parts, without departing from the scope of this invention.
  • the handset 130 (Fig.10) could have a further housing 138 in the form of a slot, associated with an appropriate coupling element, for insertion and reading of fixed data from a portable memory card 139, of the smart card type, such as for example an operator identification code, telephone numbers, addresses of correspondents, etc.
  • the handset 130 may include a device 140 for infra-red type interface with the outside, for transmission and reception in limited areas. Yet again the handset 130 could have an outlet for a printer connection cable and contain the control circuits needed to receive texts to be printed.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Appareil de transmission de données par voie radioélectrique pour réseau de communication sans fil, comportant un ordinateur personnel associé à un module portatif de transmission introduit de manière amovible dans l'ordinateur personnel. Le module est constitué d'une carte à adaptateur raccordée à une carte radioélectrique également amovible, et à deux antennes en diversité d'espace en forme de L fixées à deux parois latérales du boîtier du module radioélectrique. Cet appareil permet la transmission et la réception de données dans un réseau de communication sans fil, au moyen d'un ordinateur.
PCT/IT1995/000116 1994-07-22 1995-07-12 Appareil de transmission de donnees pour reseau de communication sans fil WO1996003810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT94TO000603A IT1266887B1 (it) 1994-07-22 1994-07-22 Apparecchiatura di trasmissione di dati per una rete di comunicazione senza fili.
ITTO94A000603 1994-07-22

Publications (1)

Publication Number Publication Date
WO1996003810A1 true WO1996003810A1 (fr) 1996-02-08

Family

ID=11412692

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1995/000116 WO1996003810A1 (fr) 1994-07-22 1995-07-12 Appareil de transmission de donnees pour reseau de communication sans fil

Country Status (3)

Country Link
IL (1) IL114342A0 (fr)
IT (1) IT1266887B1 (fr)
WO (1) WO1996003810A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0791878A3 (fr) * 1996-02-20 1998-04-01 International Business Machines Corporation Ordinateur portable avec une antenne multimode intégrée
DE19714323A1 (de) * 1997-03-25 1998-10-15 Mannesmann Ag System zur optischen Darstellung von Verkehrsinformationen
GB2326050A (en) * 1997-06-03 1998-12-09 Fujitsu Ltd Portable telephone set with a card loading portion and battery housing side by side
WO2004008692A2 (fr) * 2002-07-15 2004-01-22 Koninklijke Philips Electronics N.V. Procede et systeme de communication sans fil entre dispositifs
US7925301B2 (en) 1997-06-03 2011-04-12 Fujitsu Limited Portable telephone set with a card inserted through a battery holding space
EP2182643A3 (fr) * 2008-10-31 2011-09-28 Smart Gears Limited Modem modulaire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0474491A2 (fr) * 1990-09-06 1992-03-11 NCR International, Inc. Procédé et dispositif de traitement d'un signal de donnée reçu par voie radio
WO1993007684A1 (fr) * 1991-10-07 1993-04-15 Sixtel S.P.A. Reseau local non cable (reseau local radio) dote d'une unite centrale
GB2277841A (en) * 1993-05-06 1994-11-09 Plessey Semiconductors Ltd Plug in transmitter/receiver for LAN

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0474491A2 (fr) * 1990-09-06 1992-03-11 NCR International, Inc. Procédé et dispositif de traitement d'un signal de donnée reçu par voie radio
WO1993007684A1 (fr) * 1991-10-07 1993-04-15 Sixtel S.P.A. Reseau local non cable (reseau local radio) dote d'une unite centrale
GB2277841A (en) * 1993-05-06 1994-11-09 Plessey Semiconductors Ltd Plug in transmitter/receiver for LAN

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FLETCHER: "Five-Chip Sceptre chip set delivers complete GSM in PCMCIA package", ELECTRONICS, vol. 67, no. 5, 14 March 1994 (1994-03-14), CLEVELAND,OH,US, pages 9, XP000441000 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0791878A3 (fr) * 1996-02-20 1998-04-01 International Business Machines Corporation Ordinateur portable avec une antenne multimode intégrée
DE19714323A1 (de) * 1997-03-25 1998-10-15 Mannesmann Ag System zur optischen Darstellung von Verkehrsinformationen
DE19714323C2 (de) * 1997-03-25 2000-01-27 Mannesmann Ag System zur optischen Darstellung von Verkehrsinformationen
GB2326050A (en) * 1997-06-03 1998-12-09 Fujitsu Ltd Portable telephone set with a card loading portion and battery housing side by side
US6101372A (en) * 1997-06-03 2000-08-08 Fujitsu Limited Portable telephone set
GB2326050B (en) * 1997-06-03 2002-01-09 Fujitsu Ltd Portable telephone set
US6580923B1 (en) 1997-06-03 2003-06-17 Fujitsu Limited Portable telephone set
US7925301B2 (en) 1997-06-03 2011-04-12 Fujitsu Limited Portable telephone set with a card inserted through a battery holding space
US8666449B2 (en) 1997-06-03 2014-03-04 Fujitsu Limited Portable telephone set
WO2004008692A2 (fr) * 2002-07-15 2004-01-22 Koninklijke Philips Electronics N.V. Procede et systeme de communication sans fil entre dispositifs
WO2004008692A3 (fr) * 2002-07-15 2004-04-22 Koninkl Philips Electronics Nv Procede et systeme de communication sans fil entre dispositifs
EP2182643A3 (fr) * 2008-10-31 2011-09-28 Smart Gears Limited Modem modulaire

Also Published As

Publication number Publication date
ITTO940603A1 (it) 1996-01-22
IT1266887B1 (it) 1997-01-21
IL114342A0 (en) 1995-10-31
ITTO940603A0 (it) 1994-07-22

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