WO2006072883A1 - Enregistrement en temps reel d'une conversation entre des abonnes mobiles - Google Patents

Enregistrement en temps reel d'une conversation entre des abonnes mobiles Download PDF

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Publication number
WO2006072883A1
WO2006072883A1 PCT/IB2006/000035 IB2006000035W WO2006072883A1 WO 2006072883 A1 WO2006072883 A1 WO 2006072883A1 IB 2006000035 W IB2006000035 W IB 2006000035W WO 2006072883 A1 WO2006072883 A1 WO 2006072883A1
Authority
WO
WIPO (PCT)
Prior art keywords
phone
recording
voice
token
conversation
Prior art date
Application number
PCT/IB2006/000035
Other languages
English (en)
Inventor
Delfo Esposito
Original Assignee
Axalto Sa
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 Axalto Sa filed Critical Axalto Sa
Publication of WO2006072883A1 publication Critical patent/WO2006072883A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/656—Recording arrangements for recording a message from the calling party for recording conversations

Definitions

  • the invention relates to mobile phones and in particular to voice recording using mobile phones.
  • Such ability allows the subscriber of a mobile phone to keep the content of the discussion for different purposes.
  • a typical example is the necessity to keep a piece of evidence of what has been expressed at a given time and in a given context.
  • Another purpose is for example the desire to keep some piece of record for more personal reasons, for example to be able to hear the voice of the beloved person at any moment.
  • Another important ability of such system is to constitute an efficient notebook for storing at any moment some piece of practical information as a voice file rather than having to write it manually.
  • Using the handset as a recorder is immediate whereas finding a pencil and a piece of paper is sometimes tricky for example in the train or even while walking in the street.
  • the proposed phones with a recording ability still however imply some shortcomings.
  • One of the first shortcomings is the lack of confidentiality as to the stored voice files.
  • the proposed recording phones furthermore have poor abilities in terms of retrieving and using the stored voice files.
  • Another purpose of the invention is to allow an easier afterwards use of the piece of discussion. This aim is attained according to the invention by means of the method and by means of the device as recited in the appended claims.
  • Figure 1 is a schematic block diagram showing an overall configuration of one embodiment according to the invention.
  • Figure 2 is a schematic block diagram showing an overall configuration of another embodiment according to the invention.
  • Figure 3 is a schematic block diagram showing a structure for coding/decoding voice inside a mobile phone, from which voice is picked up according to a preferred embodiment of the invention.
  • Figure 1 illustrates two handsets 10 and 20 communicating together via a wireless network. Between these two handsets a series of two-headed arrows 30 to 50 are represented which illustrate each one a part of a conversation session between the two handsets 10 and 20.
  • the arrows 30 to 50 are represented between two interrupted vertical lines which vertical lines represent the two handsets 10 and 20. Arrows 30 to 50 spread from top (arrow 30) to bottom (arrow 50) as a function of the order in time when each period corresponding to an arrow occurs. Arrows 30 to 50 are thus placed on a time scale which extends from top to bottom. Arrow 30 is placed at the far top of figure 1 as representing a first period t o -ti of the conversation. Arrow 40 is at mid-height as corresponding to a period Vt 2 which takes place at mid-conversation. Arrow 50 corresponds to a period t 2 -t 3 which terminates the conversation and is therefore at the far bottom of the time scale.
  • Period of time t o -ti is a classical piece of discussion between the holders of handsets 10 and 20. During this period, no particular substantive content is exchanged between the two speakers and they do not feel the necessity to record each other. Let's say at a certain moment t
  • the person using handset 20 is particularly concerned about not forgetting the information and wants to record it. At this moment t-i, such person holding handset 20 proposes to record said data by means of her handset. At this particular moment ti , the person holding handset 20 presses a specific button 21 on handset 20 which activates the recording of the discussion.
  • to moment t 2 is illustrated by arrow 40 which is specifically represented with hachured filling.
  • Handset 20 is equipped with a retrievable authenticating token 24, which in the present case is a smart card such as a SIM (Subscriber Identity Module).
  • a retrievable authenticating token 24 which in the present case is a smart card such as a SIM (Subscriber Identity Module).
  • Authenticating token 24 can be any other type of authenticating token as far as it is associated with the handset, such as a retrievable USB protocol token, for example a token having a connector of the USB type such as a USB "key" .
  • Said smart card 24 is classically equipped with processor and memory means.
  • the memory means of the smart card 24 include non-volatile memory, i.e. memory which does not erase when the smart card is no more powered, for example when the mobile handset is turned off or arrives at the end of battery duration.
  • the smart card includes non-volatile memory, i.e. memory which does not erase when the smart card is no more powered, for example when the mobile handset is turned off or arrives at the end of battery duration.
  • the smart card includes non-volatile memory, i.e. memory which does not erase when the smart card is no more powered, for example when the mobile handset is turned off or arrives at the end of battery duration.
  • an application 25 is specifically dedicated to performing the recording task as previously described.
  • application 25 waits for a specific signal from the operating system of the card said specific signal indicating that button 21 is actuated.
  • a special actuating of button 21 can be monitored as necessary for actuating application 25, such as a long-during depression of button 21 (* or star button for example). Such depression can be requested to last more than two seconds as an example.
  • application 25 in card 24 requests the operating system of the card to use the handset as a modem, i.e. as a modulator/demodulator.
  • a modulator/demodulator Such role is performed by the handset very easily as modulator/demodulator exist classically in the handset for other purposes as will be described hereafter.
  • Such role operation serves for collecting the content of the discussion in the form of recordable digital data.
  • Application 25 stores said digital voice signal inside the non-volatile memory of the card.
  • the signal is stored inside the EEPROM, i.e. the electrically erasable programmable read only memory of the card.
  • Flash memory is a non-volatile type of memory which is fed or erased in a page-by-page mode, which entitles it to store large amounts of information.
  • Application 25 which is embedded and run in the card stores the voice file and simultaneously secures said voice fie in the card.
  • the voice file comprises a body and a header, said header storing the definition of the specific process which must be complied with so as to gain access to the content of the file body. When accessing to the file, the card requires said specific process to be carried out.
  • the required process to access to the voice content of the file is to provide the PIN code of the user.
  • the recorded voice file is encrypted with a specific key which is stored in the card, said key being stored in the card at a very high level of security so that it is very difficult for a fraudulous user to read the voice file without previous retrieval of the key for example thanks to entry of the PIN code or thanks to performing a key challenge as described hereafter, in particular by the handset.
  • Smart card 24 or any other secured authenticating token is therefore a very efficient means for storing in a secure manner the record of a discussion.
  • the card as a retrievable means allows to transfer in a very simple way the records from the handset to any reader.
  • the card 24 can for example be extracted from the handset and be introduced in a personal computer which is equipped with reading means.
  • the PC is allowed to retrieve the voice file in the card once the PIN code of the user is entered on the PC. In some preferred embodiment, it is required from the PC to detain a pre-memorized identifying key.
  • a pre-memorized identifying key The fact that the PC detains such key is ascertained by the card itself which sends a challenge to the PC, which challenge can only be complied with if the PC detains said key.
  • Such a challenge is typically a predetermined calculation with said key on the basis of random number which is provided by the card.
  • the challenge consists in the PC providing the very result of the calculation which is expected by the card 24. This way the card 24 constitutes a retrievable storing means for the voice recordings with the ability to protect said recordings against unauthorized reading.
  • means are provided for ensuring that the holder of handset 10 has the opportunity to oppose the recording of the conversation.
  • the card 24 of handset 20 performs a task which consists in requesting the handset 10 to send an acknowledgment for authorizing the recording. To this end an additional step is performed by the previously described application 25 in the card 24.
  • This additional step is also initiated by detection of the same actuation of button 21 on handset 20.
  • actuation application 25 sends a message to handset 10 which requests handset 10 whether authorization is given to the recording.
  • This request message is for example transmitted through the voice session which is currently active.
  • the holder of handset 10 is warned of said request by a particular sound, or simply orally by the other-end holder who has just pressed button 21.
  • the holder of handset 10 decides to press or not a particular button 11 of his own handset. If button 11 is pressed, then an application of the card 14 of handset 10 sends an authorization message to requesting handset 20.
  • the authorization message is sent for example through the current voice session.
  • a special actuating can be monitored as only able to actuate the sending of such authorization message, such as a long during depression of button 11 (* or star button for example) for more than two seconds as an example. This way the holder of handset 10 is protected against unwished triggering of button 11 and accidental sending of the authorization message.
  • buttons 11 are not actuated, then no authorization is sent and handset 20 is not authorized to begin any recording.
  • the application authorizing the recording is advantageously embedded in the retrievable card 14 which is in the non-recording handset 10.
  • Such application is for example an application similar to the recording application 25 of handset 10, i.e. which is otherwise able to perform a recording on its own side.
  • Such embodiment illustrated on figure 2 ensures an approval by the both recorded persons. It therefore provides a solution to possible concerns as to privacy i.e. ensures still further to the recorded persons that they won't have their sayings spread around without authorization.
  • the voice files can be retrieved and read in the same way as SMS files.
  • the voice files are managed through menus.
  • the structure of the recording phone is. represented, which classically comprises means 27a, 27b for shaping the signal from a microphone 26 of the phone towards wireless network 100 and means 28a, 28b for shaping the signal from the wireless network to a speaker 29 of the phone.
  • Means 27a, 27b, 27c comprise an A/D converter 27a which converts the analogical signal produced by the microphone 26 into a digital signal.
  • Means 27a, 27b, 27c then comprise a coder 27b which processes the digital signal into coded and compressed mode which is specifically advantageous for easing transmission of the data in the wireless network 100.
  • a modulator 27c is typically placed at the output of coder 27b.
  • Means 28a, 28b, 28c for processing the signal received from the network comprise consecutively an equalizer/demodulator 28a, a decoder 28b and a D/A converter 28c for converting the decoded digital signal into analogical signal which is then provided to the loudspeaker 29.
  • the voice produced in the phone i.e. the voice provided by the microphone 26 is advantageously picked-up immediately after being converted from analogical to digital.
  • Application 25 of card 24 therefore preferably picks up the digital signal directly at the output of
  • A/D converter 27a This pick up point is referenced 27 on figure 3.
  • the voice is advantageously picked up by application 25 as a digital signal, immediately before being converted into analogical signal so as to be provided to the loudspeaker 29.
  • Application 25 of card 24 therefore preferably picks up the digital signal directly before the input of D/A converter 28c. This pick-up point is referenced 28d on figure 3.
  • Digital voice signal is then preferably compressed before being recorded in card 24.
  • Compression at low rate generates files in manageable size for such a SIM card.
  • Compression means suitable for this purpose are implemented for example in the phone under the control of application 25 of card 24, but can also be implemented in the card, for example as a second compression application on the fly which is under control of the previously described storing application 25.
  • the voice is picked in the recording phone as a digital and already compressed signal.
  • the voice is picked immediately up from decoder 28b as for the received voice, and immediately down from coder 27b as for the voice to be sent.
  • the places where the voice is picked up in such a case are respectively referenced 27d' and 28d' in figure 3.
  • the voice being picked up as coded in such a case, it is already in a compressed mode originally for the purpose of an efficient transmitting through the network.
  • This compressed signal is advantageously picked up at points 27d' and 28d' so as to obtain also a directly compressed signal which is suitable for being stored directly in the card without further necessity to compress it.
  • the handsets also include an application which is able to retrieve and read the voice files, i.e. to play them during a current conversation. This way the holder of a handset such as handset 20 can have the voice file played while he is under connection with a new handset 10a so that the holder of said handset 10a becomes informed of the content of the recording.
  • the holder of handset 10a can also record in real time the content of the played voice content, possibly after mutual approval of both holders of handsets 20 and 10a as described herebefore.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé permettant d'enregistrer en temps réel une conversation entre deux abonnés utilisant leurs téléphones mobiles (10, 20). Ce procédé consiste à enregistrer (40) par voie interne l'un des deux téléphones mobiles (10, 20), au moins un des téléphones mobiles (10, 20) comprenant un jeton d'authentification récupérable, puis à stocker la conversation dans ledit jeton d'authentification récupérable.
PCT/IB2006/000035 2005-01-10 2006-01-09 Enregistrement en temps reel d'une conversation entre des abonnes mobiles WO2006072883A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20050023 ITMI20050023A1 (it) 2005-01-10 2005-01-10 Telefoni mobili che utilizzano la registrazione della voce
ITMI2005A000023 2005-01-10

Publications (1)

Publication Number Publication Date
WO2006072883A1 true WO2006072883A1 (fr) 2006-07-13

Family

ID=36199311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/000035 WO2006072883A1 (fr) 2005-01-10 2006-01-09 Enregistrement en temps reel d'une conversation entre des abonnes mobiles

Country Status (2)

Country Link
IT (1) ITMI20050023A1 (fr)
WO (1) WO2006072883A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539635A1 (de) * 1995-10-25 1997-04-30 Holzer Walter Prof Dr H C Ing Mobiltelefon mit Sonderfunktionen
EP1115260A2 (fr) * 2000-01-05 2001-07-11 Sony Corporation Procédé pour limiter la fonctionalité d'un terminal de communication téléfonique, procédé de communication téléfonique, terminal de communication téléfonique et appareil pour centre répéteur
EP1172990A1 (fr) * 2000-07-14 2002-01-16 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Méthode d'autorisation pour l'enregistrement de l'information échangée entre appareils de télécommunication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539635A1 (de) * 1995-10-25 1997-04-30 Holzer Walter Prof Dr H C Ing Mobiltelefon mit Sonderfunktionen
EP1115260A2 (fr) * 2000-01-05 2001-07-11 Sony Corporation Procédé pour limiter la fonctionalité d'un terminal de communication téléfonique, procédé de communication téléfonique, terminal de communication téléfonique et appareil pour centre répéteur
EP1172990A1 (fr) * 2000-07-14 2002-01-16 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Méthode d'autorisation pour l'enregistrement de l'information échangée entre appareils de télécommunication

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Publication number Publication date
ITMI20050023A1 (it) 2006-07-11

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