WO2005114855A1 - Telephony device with infrared data association irda features - Google Patents

Telephony device with infrared data association irda features Download PDF

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Publication number
WO2005114855A1
WO2005114855A1 PCT/US2004/013470 US2004013470W WO2005114855A1 WO 2005114855 A1 WO2005114855 A1 WO 2005114855A1 US 2004013470 W US2004013470 W US 2004013470W WO 2005114855 A1 WO2005114855 A1 WO 2005114855A1
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WO
WIPO (PCT)
Prior art keywords
data
audio
infrared
controlling
modem
Prior art date
Application number
PCT/US2004/013470
Other languages
French (fr)
Inventor
Clarence Charles Rudd
Scott Alan Griepentrog
Original Assignee
Thomson Licensing S.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 Thomson Licensing S.A. filed Critical Thomson Licensing S.A.
Priority to PCT/US2004/013470 priority Critical patent/WO2005114855A1/en
Publication of WO2005114855A1 publication Critical patent/WO2005114855A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/737—Characterised by transmission of electromagnetic waves other than radio waves, e.g. infrared waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces

Definitions

  • the present invention relates generally to telephones and more particularly to a telephone with infrared data association IrDA repeater.
  • the infrared data association IrDA protocols were developed to permit transmitting of information from one computer to another quickly and easily without the need to configure protocols or connect wires.
  • the IrDA protocols have been adopted by many different personal desk accessory PDA manufacturers, notably the Palm and Windows CE platforms, as well as by many desktop and portable computers.
  • the ability to "beam" information from one Palm or other PDA or computer to another is a very useful function. Any two people with compatible PDA's and/or software can transfer records or programs. Typically, while individuals are talking on the phone, an exchange of information such as addresses and phone numbers requires verbal conveyance by one individual and handwritten copying by the other individual.
  • An infrared data association apparatus for telephony use includes an interface circuit for coupling to a telephone network, an infrared transceiver for wireless exchange of data with a device that has an infrared data association interface for data exchange, a signal multiplexer and modem coupled to the interface circuit, and a processor for controlling the signal multiplexer and modem to selectively pass audio and the data and for controlling exchange of the data through the infrared transceiver.
  • a method for providing infrared data association capabilities with telephone operation includes the steps of interfacing to a telephone network, receiving selectively data over an infrared wireless coupling with a device having an infrared data association interface for data exchange, multiplexing and modulating selectively the data and audio, and controlling the receiving for exchange of the data and controlling the multiplexing and modulating for selectively passing the audio and the data through the interfacing.
  • FIG. 1 is a block diagram of a telephony device with infrared data association IrDA repeater according to an embodiment of the invention
  • FIG. 2 is a block diagram of an exemplary internal configuration of the telephony device of FIG. 1
  • FIG. 3 is a block diagram of an alternative exemplary internal configuration of the telephony device of FIG. 1
  • FIG. 4 is a block diagram of a further alternative exemplary internal configuration of the telephony device of FIG. 1
  • FIG. 5 is a block diagram of an exemplary operating logic of the central processing unit CPU in FIGS. 2-4.
  • identical reference numerals have been used, where possible, to designate identical elements that are common to the figures.
  • FIG. 1 An exemplary application of the inventive telephony device with IrDA capabilities is diagrammed 100 in FIG. 1.
  • the telephony device with IrDA repeater 103 would, while engaged in a voice call, transfer presented to its IrDA port by an IrDA capable device 101 to a similarly equipped telephony device 103'.
  • wire line connections between telephony devices are over a telephone network such as a public switched telephone network PSTN 104.
  • PSTN 104 public switched telephone network
  • the similar telephony device 103' could then retransmit the data out its IrDA port to an IrDA capable device 101' such as a computer.
  • a line interface circuit 205 provides a connection to the telephone network 104, a path for audio to be sent to the speaker in the handset 206 from the network, and a path for audio from the microphone in the handset 206 to be sent to the network. This allows a two-way conversation with another telephone device in the network.
  • This telephony device with IrDA capabilities differs from a standard telephony device with the addition of the following components.
  • the signal multiplexer 204 passes the audio data unchanged, and a telephone conversation can progress normally without interference. While connected through the telephone network PSTN 104 to another telephone 103' with this same capability, a person can initiate a data transfer using IrDA protocols. As an example, this can be accomplished by pointing a PDA or other IrDA capable device 101. at the infrared transceiver 203 of the telephony device 103 and prompting it to "beam" a file to the telephony device.
  • the central processing unit 201 CPU of the telephony device detects the IrDA initialization sequence, and sends a signal to the remote telephone 103' connected through the PSTN 104 by using the signal multiplexer and modem 204 to inject a trigger signal into the audio path. After a brief negotiation sequence between the modems of both telephones 103, 103', the transfer of the data between the IrDA devices is performed across the telephone network PSTN 104. Once the transfer is complete, the modems are quieted and the telephones return to normal voice communication operation.
  • Injected data bursts where the audio is not modified, but gaps of silence in the audio are used to burst short amounts of data, resulting in slower speed transfer but continued conversation being possible.
  • Digitally multiplexed voice & data where the audio is digitized and interspersed with the data being transferred, resulting in medium speed data transfer with continued audio conversation.
  • Audible modem signal where a low amplitude, volume, modem carrier is mixed with the audio data, which can be heard by the persons at both ends but is not objectionably loud, resulting in slower speed data transfer but accomplished with less expensive hardware and continued conversation is possible.
  • Another variations on these methods is where an audible signal with an inverted matching carrier is added to the speaker output signal to eliminate most of the data signal heard by the person.
  • the telephony with IrDA capabilities can also be incorporated into other forms of telephony devices such as speakerphones, cordless phones, answering machines, digital phones , e.g., ISDN, VoIP, VoE, VoDSL, etc, cell phones, radio transceivers, telephone adjunct that is a separate device with pass-through to another phone or other telephone device that can convey voice communications between distances.
  • telephony devices such as speakerphones, cordless phones, answering machines, digital phones , e.g., ISDN, VoIP, VoE, VoDSL, etc, cell phones, radio transceivers, telephone adjunct that is a separate device with pass-through to another phone or other telephone device that can convey voice communications between distances.
  • An exemplary telephone adjunct device i.e., set top box connected between an typical telephone 302 incorporating the telephony with IrDA capabilities is shown 300 in FIG. 3.
  • the audio output is connected through a "reverse" line interface 301 that simulates the phone connection to an ordinary phone.
  • An alternative exemplary telephone adjunct device is shown 400 in FIG. 4.
  • This example 400 of a telephone adjunct device 400 would simplify the interface by eliminating the "reverse" line interface 301 in FIG. 3 and connect the audio output from the telephone 302 directly to the telephone network 104. This embodiment does not allow for communication during the data transfer.
  • FIG. 5 a block diagram 300 of an exemplary operating logic of the central processing unit CPU 201 is shown.
  • This operating logic 500 includes an infrared data association layer IrDA physical layer IrPHY and IrDA protocol stack 503, a control program
  • IrDA protocol stack includes IrPHY, IrLAP, IrLMP, Tiny TP, IrOBEX and IrCOMM layers.
  • the Infrared Physical Layer is the lowest protocol level of the IrDA protocol stack and is referred to as IrPHY.
  • IrPHY defines the method and format of the data frames sent and received on the infrared media.
  • the Infrared Link Access Protocol (IrLAP) and Infrared Link Management Protocol (IrLMP) allow devices to discover each other and connect to services provided.
  • the Tiny Transport Protocol (TinyTP) is used by applications to make connections and to send and receive data using a reliable transport.
  • the application can use IrOBEX or IrCOMM to communicate with other devices.
  • the Infrared object Exchange Protocol Layer allows systems of all sizes and types to exchange a wide variety of data and commands in a resource-sensitive standardized fashion.
  • This protocol layer takes an arbitrary data object (a file, for instance) and sends it to whomever the IR device is pointing.
  • IrOBEX also provides tools that enable the object to be intelligently recognized and handled on the receive side.
  • the Infrared Communications IrCOMM protocol layer provides an emulation of a device connected via a serial or parallel port. Legacy applications proceed to work the same way in communicating with the devices through the same APIs without knowing that it is actually the IrDA protocol stack that is put to operation. By this way, older applications are made to make use of the latest and efficient means of communications available.
  • an alternative embodiment of the invention can employ a store-and-forward method to convey large data objects in a pseudo-offline mode.
  • the object can be beamed into a storage device on phone A while conversing, then when the conversation is complete but the file has either not yet begun or at least completed transferring, the phones move into a high speed data transfer mode until all data transfer is complete, and then the users hang up the connection without further operator interaction.
  • Phone B then has the data in it's storage (if not already delivered) for later transfer to a PDA. Storage device size, the probability of users desiring communication after transfer to confirm accurate delivery, and the possibility of lost data if the transfer is interrupted can be incorporated into the design solution.

Abstract

An infrared data association apparatus (200) for telephony use includes an interface circuit (205) for coupling to a telephone network (104), an infrared transceiver (203) for wireless exchange of data with a device (101) that has an infrared data association interface for data exchange, a signal multiplexer and modem (204) coupled to the interface circuit (205), and a central processor (201) for controlling the signal multiplexer and modem (204) to selectively pass audio and data and for controlling exchange of the data through the infrared transceiver (203).

Description

TELEPHONY DEVICE WITH INFRARED DATA ASSOCIATION IrDA FEATURES
FIELD OF THE INVENTION The present invention relates generally to telephones and more particularly to a telephone with infrared data association IrDA repeater.
BACKGROUND OF THE INVENTION The infrared data association IrDA protocols were developed to permit transmitting of information from one computer to another quickly and easily without the need to configure protocols or connect wires. The IrDA protocols have been adopted by many different personal desk accessory PDA manufacturers, notably the Palm and Windows CE platforms, as well as by many desktop and portable computers. The ability to "beam" information from one Palm or other PDA or computer to another is a very useful function. Any two people with compatible PDA's and/or software can transfer records or programs. Typically, while individuals are talking on the phone, an exchange of information such as addresses and phone numbers requires verbal conveyance by one individual and handwritten copying by the other individual. When the amount of information conveyed is more than a few words, the exchange of information in this manner can be time consuming, laborious and prone to mistakes. Accordingly, there is a need for phones users with an IrDA capability to allow users to pass data received over an IrDA connection over a phone connection to a second phone that would store the data received to a device across an IrDA connection.
SUMMARY OF THE INVENTION An infrared data association apparatus for telephony use includes an interface circuit for coupling to a telephone network, an infrared transceiver for wireless exchange of data with a device that has an infrared data association interface for data exchange, a signal multiplexer and modem coupled to the interface circuit, and a processor for controlling the signal multiplexer and modem to selectively pass audio and the data and for controlling exchange of the data through the infrared transceiver. A method for providing infrared data association capabilities with telephone operation includes the steps of interfacing to a telephone network, receiving selectively data over an infrared wireless coupling with a device having an infrared data association interface for data exchange, multiplexing and modulating selectively the data and audio, and controlling the receiving for exchange of the data and controlling the multiplexing and modulating for selectively passing the audio and the data through the interfacing.
BRIEF DESCRIPTION OF THE DRAWINGS A more complete understanding of the present invention may be obtained from consideration of the following description in conjunction with the drawings, in which: FIG. 1 is a block diagram of a telephony device with infrared data association IrDA repeater according to an embodiment of the invention; FIG. 2 is a block diagram of an exemplary internal configuration of the telephony device of FIG. 1 ; FIG. 3 is a block diagram of an alternative exemplary internal configuration of the telephony device of FIG. 1 ; FIG. 4 is a block diagram of a further alternative exemplary internal configuration of the telephony device of FIG. 1; and FIG. 5 is a block diagram of an exemplary operating logic of the central processing unit CPU in FIGS. 2-4. To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures.
DETAILED DESCRIPTION An exemplary application of the inventive telephony device with IrDA capabilities is diagrammed 100 in FIG. 1. The telephony device with IrDA repeater 103 would, while engaged in a voice call, transfer presented to its IrDA port by an IrDA capable device 101 to a similarly equipped telephony device 103'. Typically wire line connections between telephony devices are over a telephone network such as a public switched telephone network PSTN 104. The similar telephony device 103' could then retransmit the data out its IrDA port to an IrDA capable device 101' such as a computer. Also the similar telephony device 103' could transfer data presented to its IrDA port to the original telephony device 103 for retransmission. The use of telephony devices having this IrDA feature allows users to send data from one IrDA device 101, e.g., personal desk accessory PDA, to another IrDA equipped device 103 while engaged in a voice call. An exemplary internal configuration of the telephony device of FIG. 1 is shown in block diagram 200 in FIG. 2. With a standard desk telephone, for example, a line interface circuit 205 provides a connection to the telephone network 104, a path for audio to be sent to the speaker in the handset 206 from the network, and a path for audio from the microphone in the handset 206 to be sent to the network. This allows a two-way conversation with another telephone device in the network.
This telephony device with IrDA capabilities differs from a standard telephony device with the addition of the following components. A signal multiplexer and modem 204, a central processing unit CPU 201 containing a modified IrDA communications protocol stack, and an IrDA compatible transceiver 203 used to send and receive infrared signals to personal desk accessory PDA devices or other IrDA capable devices 101.
In the normal mode of operation, the signal multiplexer 204 passes the audio data unchanged, and a telephone conversation can progress normally without interference. While connected through the telephone network PSTN 104 to another telephone 103' with this same capability, a person can initiate a data transfer using IrDA protocols. As an example, this can be accomplished by pointing a PDA or other IrDA capable device 101. at the infrared transceiver 203 of the telephony device 103 and prompting it to "beam" a file to the telephony device. The central processing unit 201 CPU of the telephony device detects the IrDA initialization sequence, and sends a signal to the remote telephone 103' connected through the PSTN 104 by using the signal multiplexer and modem 204 to inject a trigger signal into the audio path. After a brief negotiation sequence between the modems of both telephones 103, 103', the transfer of the data between the IrDA devices is performed across the telephone network PSTN 104. Once the transfer is complete, the modems are quieted and the telephones return to normal voice communication operation.
There are several methods for achieving the data transfer over the PSTN network between the phones. Interrupt the voice communication so that the audio is muted to prevent the persons from hearing the data communications signals and a high-speed modem connection is used to transfer the data.
Injected data bursts where the audio is not modified, but gaps of silence in the audio are used to burst short amounts of data, resulting in slower speed transfer but continued conversation being possible.
Simultaneous voice & data where the audio is limited to a portion of the frequency spectrum where normal voice conversation can continue, and a separate portion is used to transfer the data, resulting in slower speed transfer but continued conversation.
Digitally multiplexed voice & data where the audio is digitized and interspersed with the data being transferred, resulting in medium speed data transfer with continued audio conversation. Audible modem signal where a low amplitude, volume, modem carrier is mixed with the audio data, which can be heard by the persons at both ends but is not objectionably loud, resulting in slower speed data transfer but accomplished with less expensive hardware and continued conversation is possible. Another variations on these methods is where an audible signal with an inverted matching carrier is added to the speaker output signal to eliminate most of the data signal heard by the person.
The telephony with IrDA capabilities can also be incorporated into other forms of telephony devices such as speakerphones, cordless phones, answering machines, digital phones , e.g., ISDN, VoIP, VoE, VoDSL, etc, cell phones, radio transceivers, telephone adjunct that is a separate device with pass-through to another phone or other telephone device that can convey voice communications between distances.
An exemplary telephone adjunct device, i.e., set top box connected between an typical telephone 302 incorporating the telephony with IrDA capabilities is shown 300 in FIG. 3. The audio output is connected through a "reverse" line interface 301 that simulates the phone connection to an ordinary phone. An alternative exemplary telephone adjunct device is shown 400 in FIG. 4. This example 400 of a telephone adjunct device 400 would simplify the interface by eliminating the "reverse" line interface 301 in FIG. 3 and connect the audio output from the telephone 302 directly to the telephone network 104. This embodiment does not allow for communication during the data transfer.
In FIG. 5, a block diagram 300 of an exemplary operating logic of the central processing unit CPU 201 is shown. This operating logic 500 includes an infrared data association layer IrDA physical layer IrPHY and IrDA protocol stack 503, a control program
501 that manages data flow such as Data In, Control signals and Data Out and features. The
IrDA protocol stack includes IrPHY, IrLAP, IrLMP, Tiny TP, IrOBEX and IrCOMM layers.
The Infrared Physical Layer is the lowest protocol level of the IrDA protocol stack and is referred to as IrPHY. IrPHY defines the method and format of the data frames sent and received on the infrared media. The Infrared Link Access Protocol (IrLAP) and Infrared Link Management Protocol (IrLMP) allow devices to discover each other and connect to services provided. The Tiny Transport Protocol (TinyTP) is used by applications to make connections and to send and receive data using a reliable transport. At the top of the IrDA protocol stack, the application can use IrOBEX or IrCOMM to communicate with other devices.
The Infrared object Exchange Protocol Layer (IrOBEX) allows systems of all sizes and types to exchange a wide variety of data and commands in a resource-sensitive standardized fashion. This protocol layer takes an arbitrary data object (a file, for instance) and sends it to whomever the IR device is pointing. IrOBEX also provides tools that enable the object to be intelligently recognized and handled on the receive side. The Infrared Communications IrCOMM protocol layer provides an emulation of a device connected via a serial or parallel port. Legacy applications proceed to work the same way in communicating with the devices through the same APIs without knowing that it is actually the IrDA protocol stack that is put to operation. By this way, older applications are made to make use of the latest and efficient means of communications available. Although various embodiments which incorporate the teachings of the present invention have been shown and described in detail herein, those skilled in the art can readily devise many other varied embodiments that will still incorporate these teachings. For example, an alternative embodiment of the invention can employ a store-and-forward method to convey large data objects in a pseudo-offline mode. In other words, the object can be beamed into a storage device on phone A while conversing, then when the conversation is complete but the file has either not yet begun or at least completed transferring, the phones move into a high speed data transfer mode until all data transfer is complete, and then the users hang up the connection without further operator interaction. Phone B then has the data in it's storage (if not already delivered) for later transfer to a PDA. Storage device size, the probability of users desiring communication after transfer to confirm accurate delivery, and the possibility of lost data if the transfer is interrupted can be incorporated into the design solution.

Claims

1. An infrared data association apparatus for telephony use comprising: an interface circuit (205) for coupling to a telephone network, an infrared transceiver (203) for wireless exchange of data with a device (101) that has an infrared data association interface for data exchange, a signal multiplexer and modem (204) coupled to said interface circuit (205), and a processor (201) for controlling said signal multiplexer and modem to selectively pass audio and said data and for controlling exchange of said data through said infrared transceiver (203).
2. The apparatus of claim 1, wherein said signal multiplexer and modem electively passes said audio to and from a handset.
3. The apparatus of claim 1, further comprising a line interface circuit for coupling between said signal multiplexer and modem and a telephone device.
4. The apparatus of claim 1, wherein said interface circuit is also for coupling to a telephone device.
5. The apparatus of claim 1, wherein said processor comprises at least one of an infrared IrDA physical driver IrPHY and infrared data association IrDA protocol stack 304 and a control program 302 managing data flow.
6. The apparatus of claim 5, wherein said infrared data association IrDA protocol stack comprises at least one of an Infrared Link Access Protocol IrLAP, Infrared Link Management Protocol IrLMP, Tiny Transport Protocol Tiny TP, Infrared Object Exchange Protocol IrOBEX and Infrared Communication protocol IrCOMM layers.
7. The apparatus of claim 1, wherein said processor is operable for enabling muting of said audio to interrupt voice communication and permit a modem operation over said interface circuit for passing of said data.
8. The apparatus of claim 1, wherein said central processor is operable for enabling injected data bursts where said audio is not modified, but gaps of silence in said audio are used to burst short amounts of said data over said interface circuit.
9. The apparatus of claim 1, wherein said central processor is operable for enabling simultaneous voice & data where said audio is limited to a first portion of a frequency spectrum for voice communication and a second portion of a frequency spectrum for transfer of said data.
10. The apparatus of claim 1, wherein said central processor is operable for enabling digitally multiplexed said audio and said data, said audio being digitized and interspersed with said data being transferred..
11. The apparatus of claim 1, wherein said central processor is operable for enabling an audible modem signal in which a low amplitude, modem carrier is mixed with said audio.
12. The apparatus of claim 1, wherein said central processor is operable, to enable an audible signal with an inverted matching carrier for passing to a speaker output signal to substantially decrease hearing of said data.
13. A method for providing infrared data association capabilities with telephone operation, said method comprising the steps of: interfacing to a telephone network, receiving selectively data over an infrared wireless coupling with a device having an infrared data association interface for data exchange, multiplexing and modulating selectively said data and audio, and controlling said receiving for exchange of said data and controlling said multiplexing and modulating for selectively passing said audio and said data through said interfacing.
14. The method of claim 13, further comprising transmitting selectively data over said infrared wireless coupling, and wherein said controlling further comprises, controlling said multiplexing and a demodulating for selectively passing said audio and said data through said interfacing
15. The method of claim 13, wherein said controlling enables muting of said audio to interrupt voice communication and enables said modulating with said interfacing for passing of said data.
16. The method of claim 13, wherein said controlling enables injecting said data in bursts with said audio being unmodified, with gaps of silence in said audio being used bursting short amounts of said data with said interfacing.
17. The method of claim 13, wherein said controlling enables simultaneous voice & data with said audio being limited to a first portion of a frequency spectrum for voice conversation and a second portion of a frequency spectrum transferring said data.
18. The method of claim 13, wherein said controlling enables digitally multiplexed said audio and said data, said audio being digitized and interspersed with said data being transferred
19. The method of claim 13, wherein said controlling enables an audible modem signal in which a low amplitude, modem carrier is mixed with said audio.
20. The method of claim 13, wherein said controlling enables an audible signal with an inverted matching carrier for passing to a speaker output signal to substantially decrease hearing of said data.
PCT/US2004/013470 2004-04-29 2004-04-29 Telephony device with infrared data association irda features WO2005114855A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5760824A (en) * 1995-12-29 1998-06-02 Lucent Technologies Inc. Multimedia telephone having wireless camera and television module and method of operation thereof
US6446127B1 (en) * 1998-10-30 2002-09-03 3Com Corporation System and method for providing user mobility services on a telephony network
US6634006B1 (en) * 1998-12-25 2003-10-14 Sharp Kabushiki Kaisha Packet data communication device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5760824A (en) * 1995-12-29 1998-06-02 Lucent Technologies Inc. Multimedia telephone having wireless camera and television module and method of operation thereof
US6446127B1 (en) * 1998-10-30 2002-09-03 3Com Corporation System and method for providing user mobility services on a telephony network
US6634006B1 (en) * 1998-12-25 2003-10-14 Sharp Kabushiki Kaisha Packet data communication device

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