EP1540920A1 - System for reciprocal video, audio and data exchange - Google Patents
System for reciprocal video, audio and data exchangeInfo
- Publication number
- EP1540920A1 EP1540920A1 EP03769568A EP03769568A EP1540920A1 EP 1540920 A1 EP1540920 A1 EP 1540920A1 EP 03769568 A EP03769568 A EP 03769568A EP 03769568 A EP03769568 A EP 03769568A EP 1540920 A1 EP1540920 A1 EP 1540920A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- data
- network
- multimedia
- exchange system
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
- H04L65/4038—Arrangements for multi-party communication, e.g. for conferences with floor control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
- H04L65/764—Media network packet handling at the destination
Definitions
- the invention relates to the field of telecommunications and more particularly to the field of multimedia systems, that is to say computer systems which allow exchanges of video and / or sound images and / or data through a telecommunication network or a set of telecommunication networks.
- Such systems are said to be videophonic, in particular in the ITU-T recommendation H.323 and in general in all the recommendations of the H.32x family.
- the ITU-T is the standardization sector of the International Telecommunication Union.
- the term network designates both several segments of the same network, as well as a set of segments belonging to different networks interconnected with one another and forming a web which can in particular implement a switched telephone network, or PSTN for short, as well as packet mode networks, as opposed to switched mode, of which the TCP / IP network commonly called the Internet is an example.
- TCP an abbreviation of the English terms Transmission Control Protocol
- IP protocol transport
- UDP being the abbreviation of the English terms User Datagram Protocol.
- UDP is a level 4 (transport) unconnected protocol used on the Internet over the IP protocol.
- IP network a network using the IP protocol.
- the invention finds a very advantageous application during a hospitalization at home of a patient.
- the patient benefits from occasional visits by members of the nursing staff.
- the purpose of these visits is to carry out by the nursing staff a control of the medical condition of the patient through visual checks of the patient, data records on the patient's condition. These occasional trips allow medical monitoring of the patient.
- terminals which allow multimedia communication between the patient and a member of the nursing staff.
- One of these terminals is the subject of the French patent application published on March 29, 2002 under the number FR 00 12179.
- the known terminals are integrated into a multimedia system which allows the exchange of video images and / or sound and / or data between a remote terminal installed in the patient's home and a local terminal available to the nursing staff, by means of '' a link established in the form of a session within the meaning of the H320 or H323 standard for example.
- the H323 standard is an adaptation of the H320 standard for IP networks, it defines a communication protocol that integrates voice, video, data and control functions.
- the term data used alone designates all data which does not relate to voice, video or control functions.
- the configuration of known systems has several limitations which are listed below.
- a first extremely penalizing limitation appears in the event of accidental interruption of the session during a multimedia exchange between the patient and the nursing staff. Indeed, the interruption of the session simultaneously cuts the flows linked to the transmission of image, sound and data as may appear in the device which is the subject of the French patent application published under No. 2 806,561.
- a second limitation is linked to transfer techniques.
- a nursing member may wish to transfer the session to a third local terminal, that is to say distant from the first but close to the second and which can, for example, be that of a specialist doctor.
- Different techniques make it possible to carry out such a transfer.
- a first technique consists firstly in breaking the initial session between the first and the second terminal according to the requirements of the chosen standard (H320, H323, ...) while leaving the impression to users that this session is in progress transfer to another terminal.
- the technique successively consists in establishing a new session between the first and the third terminal and in establishing the interfaces for exchanges between these terminals.
- This technique has the following drawbacks: a transfer time which can be considered uncomfortable by users and a risk of failure linked to the rupture of the initial session. In fact, the resources (network, memory, etc.) allocated for this session may not be immediately available when the new session is established.
- a second technique consists of using intermediate equipment during the initial session.
- This equipment establishes on the one hand a session with the first terminal and on the other hand, a session with the second terminal.
- the equipment maintains the session with the remote terminal, the first terminal, breaks the session with the second terminal and simultaneously reserves the resources for a new session with the third terminal.
- This second technique has the advantages over the previous technique of being faster and more reliable. Indeed, it can prepare the new session with the third terminal before breaking the session with the second terminal and it can ensure that resources are available and make reservations for the transfer.
- it is more expensive and requires software developments specific to the intermediate equipment.
- a third limitation is linked to the use of useful flow. Indeed, the exchange techniques implemented in known multimedia systems use the available bit rate symmetrically. Consequently, when the available bit rate is asymmetrical, as for exchanges based on ADSL transmission techniques, an abbreviation of the English terms Asymmetry Data rate Subscriber Line, the session is established according to the lowest bit rate.
- One of the objectives of the invention is to propose a multimedia system which allows the exchange of video images and sound between two remote terminals from one another and which does not have the aforementioned drawbacks.
- the invention relates to a multimedia system for reciprocal exchange between at least a first terminal and a second terminal.
- Each terminal of the system comprises: - means for capturing video images, means for capturing sound, - means for restoring video images, means for restoring sound.
- the terminals of the system are linked together by a telecommunications network which transports the different flows by means of different transport media.
- the terminals are such that each terminal further comprises transmission means, coupled to the capture means of the terminal, capable of transmitting to the network video images and audio data to generate at least one video stream and at least one audio stream. .
- Each audio stream is independent of the other streams.
- a specific media is reserved for audio streams.
- Each rendering means of a terminal receives the data of a given flow originating from the other terminal and restores it to a user of the terminal.
- the first terminal is considered by the second terminal, for each service which it can render, as a real-time server: a video server, an audio server and, possibly, a data server.
- this first terminal is also considered to be a client vis-à-vis the second terminal with regard to the types of service that this second terminal can provide: reproduction of video images, reproduction of sounds and, possibly, reproduction of data.
- the second terminal is considered by the first terminal, for each service that it can render, like a real-time server: a video server, an audio server and, possibly, a server of data.
- this second terminal is also considered to be a client vis-à-vis the first terminal with regard to the types of service that this first terminal can provide: reproduction of video images, reproduction of sounds and, possibly, reproduction of data.
- server By server is meant a means of transmitting information to render a given service.
- This information typically consists of video images the emission of which forms the video stream, the audio data the emission of which forms the audio stream and the data the emission of which forms the data stream.
- the word server designates in the application just as well a conventional telecommunication equipment called a server, as a compatible telephone of the PSTN network or a specific software associated with programmable means, the specific software being capable of distributing information to a customer who has knowledge of this software through an IP address and an associated communication port.
- the specific software delivers information to a client by sending this information to the IP address and the associated communication port.
- the image server is typically the means of a camera which generates a sequence of images, for example in jpeg format, from the captured images, which can be continuous.
- the audio server is typically the part of a microphone which generates the electrical signal corresponding to the sound received.
- the data server is typically a web server which implements a TCP / IP protocol to generate a data stream.
- the data also comes from specific devices from the use of the multimedia system, for use in the context of a hospitalization at home these are medical devices such as a pressure gauge, a thermometer, a pump, as well as an input carried out by means of a keyboard, a mouse, a digital pen, a touchpad.
- the data server of the second terminal can also generate data relating to remote administration of the first terminal (remote), in particular data relating to access rights, to the configuration of the terminal.
- Each terminal is equipped with image client, audio client and possibly data client capacities to restore images, sound and possibly data to the user.
- the image client typically consists of a means of displaying video images from both the image server of the first terminal and of the second terminal. When the image client displays the images from the image server associated with the same terminal as the client, the terminal is then a client of itself.
- the audio client is a sound reproduction system which typically consists of a loudspeaker or headphones.
- the data client is a means of restitution of data which typically consists of a display means.
- the data client may further include processing means for formatting or for calculations such as averaging.
- the data client can be essentially limited to a recording means or a detection means for triggering alerts.
- Each terminal is made up of one or more processors, possibly coupled with specialized circuits which make it possible to optimize certain processing operations such as the generation of the image stream and which are capable of achieving the performance expected in number of images per second, in audio quality, management and filtering of data flow.
- processors possibly coupled with specialized circuits which make it possible to optimize certain processing operations such as the generation of the image stream and which are capable of achieving the performance expected in number of images per second, in audio quality, management and filtering of data flow.
- the number of images per second from the remote terminal to the local terminal is 10 images / s and in the opposite direction of 20 images / s.
- the dissociation of the flows makes it possible to improve the reliability of the system, the interruption of a flow does not automatically entail the interruption of the other flows. Separation also allows better acceptance of the system by users. Indeed, when using the system as part of a hospitalization at home, the patient can lose the animated image of the caregiver member on his terminal while still having audio contact with the same member. Maintaining this contact is particularly important because it allows the patient to accept the momentary loss of image flow. In the event of loss of this last stream, the video client of the remote terminal preferably maintains the last image displayed.
- a system according to the invention advantageously makes it possible to carry out a rapid transfer; there is no delay due to the termination of any session due to the inexistence of the latter.
- the system allows optimal use of the available flow even if it is asymmetrical.
- This is particularly advantageous when the exchange is based on an ADSL communication technique which has the characteristic of allowing a higher image transmission rate in a so-called downlink direction, that is to say from the local terminal to the remote terminal. , relative to the upstream direction, that is to say from the remote terminal to the local terminal.
- the server means are autonomous from each other and dedicated to each capture means, for transmitting a video stream, an audio stream and a data stream independent of each other.
- the telecommunication network comprises the Internet network which operates with the IP protocol associated with the TCP or UDP protocol.
- Each server is identified by an address on the network and by an associated communication port.
- the so-called public address is identical for each server means while the communication port is different for each server means.
- Each terminal is equipped with an operating system, for example of the Linux or Windows TM type.
- the means for capturing video images of a given terminal consist of a remote-controlled motorized camera and provided with server means.
- the network comprises the switched telephone network and each transmission means capable of transmitting audio data is coupled, via programmable means, to the network dial-up telephone that carries the audio stream.
- each transmission means capable of transmitting images and each transmission means capable of transmitting data are coupled to the switched telephone network, via at least one router in series with an ADSL type modem.
- each transmission means capable of transmitting images and each transmission means capable of transmitting data are coupled to the ISDN network which transports the video stream and the data flow.
- the network comprises the GSM network and each transmission means capable of transmitting audio data is coupled to the GSM network which carries the audio stream.
- the network comprises the GPRS network and, each transmission means capable of transmitting images and each transmission means capable of transmitting to the data network are coupled to the GPRS network which carries the video stream and the data stream.
- the network comprises the UMTS network and each transmission means capable of transmitting audio data, images and data is coupled to the UMTS network which transports the audio streams on the voice channel and video and data streams on the data channel.
- Each combination forms a mixed network, that is to say composed of several networks of different type, which has the advantage of having a transmission capacity generally greater than that of a network composed of a single type.
- the same stream can be transmitted by two different networks.
- GSM network for audio stream / GPRS + PSTN networks for video and data streams PSTN network for audio stream / ISDN + ADSL networks for video and data streams
- PSTN network for audio / network stream PSTN network for audio / network stream
- the first terminal further comprises a remote control, coupled to programmable means, for controlling the audio flow with the second terminal.
- the data capture means of the first terminal include medical assistance devices.
- the means for rendering video images from the second terminal include two screens, one of which is capable of displaying data from the first terminal.
- the second terminal is in relation to a patient database and is able to display on one of the two screens data extracted from the patient database.
- this system is used in the context of a hospitalization at home.
- this system is used in the context of distance education.
- FIG. 1 is a diagram of a particular example of a multimedia system according to the invention which allows the exchange of video images and sound between two terminals, one of which is remote and one local.
- FIG. 1 A particular example of a multimedia system according to the invention is described with reference to FIG. 1.
- the example chosen corresponds to that of the use of a multimedia system in the context of hospitalization of a patient's home.
- the system S comprises a first terminal T ⁇ and a second terminal T, different from the first, linked together by a telecommunication network R.
- a database of patient databases is accessible by the second terminal T 2 via the network
- the telecommunications network R comprises the switched telephone network, or PSTN for short, and an IP network coupled to the switched telephone network.
- the first terminal Tj installed in the patient's home includes a PCi computer of the microcomputer type such as a PC, a Coi concentrator of the IP type, an Rt router, a mADSLi modem of the ADSL type, an mDi module, a Tri radio remote control and its Rei receiver, a motorized Cai camera, a medical Ppi pump.
- a PCi computer of the microcomputer type such as a PC, a Coi concentrator of the IP type, an Rt router, a mADSLi modem of the ADSL type, an mDi module, a Tri radio remote control and its Rei receiver, a motorized Cai camera, a medical Ppi pump.
- the PCi microcomputer of the Pentium TM type is equipped with various conventional elements which are a Cli keyboard, an Eci screen, a Soi mouse, a Mici microphone, an HPi speaker and various cards and software modules.
- the various cards and software modules ensure: - the display on the screen Eci of the images coming from the camera Caj associated with the first terminal Ti and / or the images coming from the camera Ca 2 associated with the second terminal T 2 .
- These functions are typically provided by a conventional video card.
- the functions of a Spci web server this web server being able to receive data coming from the second terminal T via the network R, to control various elements of the first terminal Ti, in particular the sound volume according to the instructions received from the second terminal T.
- the Spci server also controls the rights of access to the services offered by the Ti terminal: distribution of video images, audio data, data.
- These functions are typically provided by a conventional processor card coupled to an ethernet card.
- the control consists in detecting an activation of the Sorting remote control by the patient in order, depending on the state of the system, to order the mDi module to trigger a hook up signal for the telephone line possibly followed by a numbering or to order the mDi module to trigger a telephone line hang-up signal.
- These functions can typically be provided by a conventional processor card called the remote control card.
- multiplexing and demultiplexing functions can typically be provided by a conventional processor card (for example the remote control card) coupled to a conventional sound card.
- the Coi IP concentrator is better known under the term Anglo-Saxon hub or switch.
- the Coi concentrator is connected on the one hand to the various Sci, Spi,
- the Rti router is connected on the one hand to the IP type Coi concentrator and on the other hand to the ADSL type mADSLi modem.
- the router Rti can perform an IP address translation for the data entering the terminal Ti according to the NAT and PAT modes, an abbreviation of the English terms Network Address Translation and Port Address Translation respectively.
- the terminal Ti typically benefits from a single public IP address.
- the data is transmitted with a communication port number which corresponds to the destination server.
- the router Rti uses the port number associated with the data to calculate the final address of the data which corresponds to the address of a server within the terminal Ti.
- the mjADSLi modem interfaces with the Rti router, which transmits and receives an IP data stream in digital form, and the switched telephone network
- PSTN which transmits a signal in analog form.
- the mDi module interfaces between the audio output of the PCi microcomputer and the PSTN switched telephone network. It provides classic telephone signaling functions such as line seizure and hanging up, busy detection as well as dialing, transfer of the voice signal from the audio output of the microcomputer to the telephone line, transfer of the voice signal from the telephone line to the audio input of the microcomputer and the functions of detection and synthesis of DTMF codes, abbreviation of the Anglo-Saxon terms Dual Tone Multifrequency Dialing. In particular, an Olitec Self Memory V92 Ready TM box enables these functions to be implemented.
- the Tri radio remote control and its Rei receiver allow the user to initiate the transmission of a telephone call to the second terminal T 2 , to initiate the call if an incoming call is detected and to initiate the end of call call .
- Each activation of the Tri radio remote control induces the emission of a signal 1 to the Rei receiver which is interpreted by the means of the PC (control card of the remote control) to control the mDi module.
- the Cai camera includes a Sci web server which is capable of generating a stream of video images on an IP channel intended for the Coi concentrator, for example at a rate of approximately ten images / seconds.
- the Cai camera accepts commands sent from the second terminal T 2 to control the engine of the Cai camera in azimuth and in elevation. In general, it is able to process all commands, issued from the second terminal T 2 , which are compatible with its characteristics, these commands relate in particular to the zoom, the autofocus, the modification of iris.
- a Sony ENID31 camera associated with an Axis 2401 camera server allows such generation of streams as well as such remote control.
- the medical Ppi pump includes a web Spi server which is capable of generating a data flow on the state of the Ppi pump and which is capable of accepting commands sent from the second terminal T 2 to in particular control the on / off of the Ppi pump.
- the second terminal T 2 installed locally includes a PC 2 computer of the microcomputer type such as a PC, a Ca 2 camera with a Sc 2 web server, a concentrator IP type Co 2 , an Rt 2 router, an mD 2 module.
- the second terminal can be installed in a telephone call center and coupled to this center by a Telephone / Computer Coupling designated by the acronym CTI.
- the Pentium TM type microcomputer PC is equipped with various conventional elements which are a keyboard Cl, two screens Ec ⁇ , Ec 22 , a mouse So 2 , a microphone Mic 2 associated with a headset Cq 2 , a joystick Ma, and different cards and software modules.
- the different cards and software modules provide:
- These display functions are typically provided by a video card, for example of the Matrox G550 type.
- the control consists in detecting an activation by the caregiver of a first telephony function displayed on the screen Ec 2 ⁇ , in order to command the mD 2 module to trigger a signal for lifting the telephone line followed possibly by a numbering, to be detected activation by the caregiver of a second telephony function displayed on the screen Ec 2 ⁇ , to order the mD module to trigger a hang-up signal from telephone line.
- These functions can typically be provided by a conventional processor card called a line control card, the multiplexing of the microphone microphone output and the output of the control function for telephone line control signals to the mD module as well as demultiplexing output information from the mD 2 module to the input of the telephone line control signal control function and the input of the Cq 2 audio headset.
- a conventional processor card for example the line control card
- a conventional sound card for example the line control card
- a Spc 2 web server this web server being able to receive information coming from the first terminal Ti via the network R, to control the various elements of the first terminal Ti, in particular the engine of the camera Cai depending on the movements imposed on the controller Ma 2 by the caregiver, the sound volume of the signal restored to the patient and the caregiver via a display on the screen Ec 2 ⁇ for sound level control, walking / stopping of medical equipment at terminal Ti by means of an on-screen display Ec 2 ⁇ for on / off control.
- the server Sp 2 also controls the rights of access to the services offered by the first terminal and the second terminal T 2 , by means of a display on the screen Ec 2 ⁇ for controlling distribution rights: distribution d video, audio, data.
- These functions are typically provided by a conventional processor card coupled to an ethernet card.
- the Coi IP concentrator is better known under the term Anglo-Saxon hub or switch.
- the concentrator Co 2 is connected on the one hand to the various servers Sc 2 , Spc 2 respectively of the camera Ca 2 and of the microcomputer PC 2 , and on the other hand to the router
- Rt 2 It brings together data from different servers to transmit it on a single channel to the Rt 2 router and vice versa.
- the router Rt 2 is connected on the one hand to the concentrator Co 2 of the IP type and on the other hand to the network R.
- the router Rt 2 performs an IP address translation for the data entering the terminal T 2 according to the NAT modes and PAT.
- the terminal T 2 typically benefits from a single public IP address.
- the data is transmitted with a port number which corresponds to the destination server.
- the Rt 2 router uses the communication port number associated with the data to calculate the final address of the data which corresponds to the address of a server within the second terminal T 2 .
- the mD 2 module interfaces between the audio output of the PC 2 microcomputer and the PSTN switched telephone network. It provides standard telephone signaling functions such as line seizure and hanging up, busy detection as well as dialing, transfer of the voice signal from the audio output of the microcomputer to the telephone line, transfer of the voice signal from the telephone line to the audio input of the microcomputer and the functions of detection and synthesis of DTMF codes, abbreviation of the Anglo-Saxon terms Dual Tone Multifrequency Dialing. In particular, an Olitec Self Memory V92 Ready TM box enables these functions to be implemented.
- the camera Ca includes a web Sc 2 server which is capable of generating a stream of video images on an IP channel intended for the Co 2 concentrator, for example at a rate of approximately twenty images / seconds with an Axis 2120 camera. of the system is specified below.
- the patient activates his remote control. Activation sends a signal to the receiver.
- the system memorizes a state determined by the actions of the user and the context, in particular the presence or no audio stream. Before a first activation of the remote control, there is no audio stream between the terminal Ti and the terminal T 2 , the state can be qualified as standby. In the absence of a call from the caregiver, the first activation therefore corresponds to a dialing request from the patient. If the correspondent picks up, an audio stream will be established between the patient and the caregiver. Under these conditions, the next activation corresponds to a request from the patient to hang up.
- the next activation again corresponds to a dialing request from the patient.
- the signal received by the receiver is interpreted by the PCi in different ways which depend on the last memorized state and the context.
- the PCi Depending on its interpretation of the signal received by the receiver, the PCi generates an appropriate control signal from the mDi module.
- the caregiver may want the patient's image on one of their screens. To this end, it requests the PC 2 , via the video distribution rights command displayed on its screen Ec 2 ⁇ , to send a request to the camera Cai to obtain a stream of video images from the terminal Ti. This request can be entered by the caregiver either by means of the keyboard Cl 2 or by means of the mouse So 2 . To target a particular point in the patient, the caregiver manipulates his controller Ma 2 until the desired image appears on the screen Ec 2 ⁇ . The Ma 2 controller can also allow him to control a zoom on a specific area of the patient.
- the caregiver authorizes the terminal Ti to restore the image of the caregiver on the screen Eci of the terminal Ti.
- This authorization can be entered by the caregiver either by means of the keyboard Cl 2 or by means of the mouse So 2 or this authorization can be sent automatically as soon as the caregiver asks PC 2 to have the image of the patient.
- This authorization is received by the Spci server which authorizes the display of the video stream coming from the terminal T 2 .
- the caregiver can obtain the status of the medical pump which, in the example, is a feed pump. To this end, it requests the PC 2 , via the data distribution rights command displayed on its screen Ec 2 ⁇ , to send a request to the medical pump Ppi to obtain a data flow from the terminal T ⁇ .
- This request can be entered by the caregiver either by means of the keyboard Cl 2 or by means of the mouse So 2 .
- the first terminal Ti it is possible to couple the microphone Mici, the speaker HPi and the control of the Tri radio remote control and its Rei receiver to an audio server itself connected to the Coi concentrator.
- the Coi concentrator is deleted. This deletion is possible by directly connecting the Cai camera and medical equipment to the PCi microcomputer and by connecting the Rti router to the Spci web server on the PCi microcomputer.
- This particular configuration includes two servers on the patient side, an audio server and a video server plus data.
- the telephony function can be ensured by means of a conventional telephone without Telephone / Computer Coupling.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0211268 | 2002-09-06 | ||
FR0211268A FR2844411B1 (en) | 2002-09-06 | 2002-09-06 | VIDEO, AUDIO AND RECIPROCAL EXCHANGE SYSTEM |
PCT/FR2003/002644 WO2004023756A1 (en) | 2002-09-06 | 2003-09-03 | System for reciprocal video, audio and data exchange |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1540920A1 true EP1540920A1 (en) | 2005-06-15 |
Family
ID=31726021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03769568A Withdrawn EP1540920A1 (en) | 2002-09-06 | 2003-09-03 | System for reciprocal video, audio and data exchange |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1540920A1 (en) |
AU (1) | AU2003278259A1 (en) |
FR (1) | FR2844411B1 (en) |
WO (1) | WO2004023756A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU6161900A (en) * | 1999-07-26 | 2001-02-13 | Monica Socias Gili | Multifunction telecommunication system for public and/or private use |
FR2806561B1 (en) * | 2000-03-16 | 2002-08-09 | France Telecom | HOME TELE ASSISTANCE SYSTEM |
-
2002
- 2002-09-06 FR FR0211268A patent/FR2844411B1/en not_active Expired - Fee Related
-
2003
- 2003-09-03 WO PCT/FR2003/002644 patent/WO2004023756A1/en not_active Application Discontinuation
- 2003-09-03 EP EP03769568A patent/EP1540920A1/en not_active Withdrawn
- 2003-09-03 AU AU2003278259A patent/AU2003278259A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2004023756A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2844411A1 (en) | 2004-03-12 |
FR2844411B1 (en) | 2005-01-14 |
AU2003278259A1 (en) | 2004-03-29 |
WO2004023756A1 (en) | 2004-03-18 |
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