Abstract:
This invention relates to a system ( 100, 200 ) for enabling a hearing device ( 106, 202 ) wireless access to a communication network ( 114 ). The system ( 100, 200 ) comprises a first transceiver unit ( 108 ) in said hearing device ( 106, 202 ) communicating according to a first communication protocol. The system ( 100, 200 ) further comprises a server device ( 112, 204 ) comprising an input/output unit ( 122 ), which is connected to the communication network ( 114 ) and communicates according to a second communication protocol, a second transceiver unit ( 118 ), which is connected wirelessly to the first transceiver unit ( 108 ) and communicates according to the first communication protocol, and comprising a translator unit ( 120 ), which interconnects the second transceiver unit ( 118 ) and the input/output unit ( 122 ) and translates between the first and second communication protocol.

Description:
FIELD OF INVENTION 
     This invention relates to a system and method for sharing network resources between hearing devices. In particular, this invention relates to a communications network enabling one or more hearing devices to access shared services. This invention further relates to a gateway device enabling hearing devices and user&#39;s thereof to utilise the system for sharing resources. 
     BACKGROUND OF INVENTION 
     Wireless communication between a pair of hearing aids and various electrical appliances is known from European patent application no.: EP 1 460 769. This patent application discloses a mobile transceiver comprising a number of receivers receiving electrical or electro-magnetic signals carrying audio signals. The mobile transceiver further comprises a prioritizing module assigning a priority to audio signals received by the receivers so as to ensure that essential information is communicated before general information. In one embodiment of the mobile transceiver comprises a positioning means determining current geographic position and the prioritizing module is designed to assign a priority value to a received audio signal according to determined current geographic position. 
     Further, German patent application no.: DE 102 22 408, discloses a hearing aid system with a radio interface enabling communication with external household appliances. The disclosed system enables a plurality of hearing aid users to connect through their hearing aids to a communication bus for individually controlling household appliances through the communication bus. The hearing aids connect wirelessly to the communication bus and receive status information from the household devices, such as “incoming telephone call” or “heating on”. The hearing aids in addition may transmit control signals to the household devices by depression of button on hearing aids or by vocal control. 
     Even though the above hearing aid systems provide extended possibilities for the hearing impaired, further advances may be achieved. For example, the problem still remains in providing a wirelessly communicating module or unit within the limited space of a hearing aid. This problem is not addressed in the above patent applications, and therefore the hearing aids in the context of the above referred systems still require physical add-on technology. 
     SUMMARY OF THE INVENTION 
     An object of the present invention is therefore to provide a hearing device system overcoming the above problems by providing a wireless communication between a plurality of hearing devices and a communications network. 
     A particular advantage of the present invention is the provision of access to common services for hearing devices, such as updating hearing aid software with new features, accessing a multimedia event, or accessing service information. 
     A particular feature of the present invention is the provision of a gateway translating from a hearing devices protocol to a communication specific protocol and from a communication specific protocol to a hearing device protocol. 
     The above object, advantage and feature together with numerous other objects, advantages and features, which will become evident from below detailed description, are obtained according to a first aspect of the present invention by a system for enabling a hearing device wireless access to a communication network, and comprising a first transceiver unit in said hearing device communicating according to a first communication protocol; a server device comprising an input/output unit connected to said communication network and adapted to communicate according to a second communication protocol, a second transceiver unit connected wirelessly to said first transceiver unit and adapted to communicate according to said first communication protocol, and a translator unit interconnecting said second transceiver unit and said input/output unit and adapted to translate between said first and second communication protocol; and wherein said hearing device is adapted to upload and download data to and from said communication network through said server device. 
     The term “a” or “an” is in this context to be construed as one or more, a plurality, or a multiplicity of parts. 
     Further, the term “hearing device” is in this context to be construed as a hearing aid, a headset, a headphone, an ear-level hearing device, or any combinations thereof. 
     Additionally, the term “server device” is in this context to be construed as a personal device for handling a single hearing device as well as a shared device for handling a number of hearing devices. That is, the server device may be a body worn mobile device or a stationary public device. 
     The system according to the first aspect of the present invention provides further advances in communication possibilities for hearing devices and, in particular, for hearing impaired using hearing devices. The system enables a user of the hearing device to access and download data from, for example, the Internet or a local area network. Thus the communication network may comprise a wired or wireless telephone network, such as public switched telephone network (PSTN), global system for mobile communication (GSM), enhanced data GSM environment (EDGE), digital enhanced cordless telecommunications (DECT), a computer network, such as dedicated line, a local area network (LAN), a metropolitan area network (MAN), wide area network (WAN), an inter-network (e.g. the Internet), a media network, such as a cable or satellite television or radio network, or any combination thereof. Thus the communication network may advantageously comprise a wide variety of network compositions, which enable audio as well control communication to the hearing device. 
     The data according to the first aspect of the present invention may comprise a data package, such as digital data configured in a transmission block, a data packet, a data parcel, datagram, and the like. The data package may have a first configuration for the communication between the first and second transceiver units and a second configuration for the communication on the communications network. 
     The data package according to the first aspect of the present invention may comprise a header section comprising routing and transmission control data, such as transmitting and receiving addresses, and a data section comprising data payload. Hence the data package may be self-contained, independent entity of data carrying information to be routed from the hearing device to the server device or from the server device to the hearing device without reliance on earlier exchanges. 
     The wireless communication between the first and second transceiver elements may be implemented by capacitive or inductive coupling. The wireless communication may further be implemented using a modulation technique, a multiplexing technique, a coding technique, or any combination thereof. The wireless communication may comprise frequency modulation (FM), amplitude modulation (AM), code-division multiple access (CDMA), phase shift keying (PSK), or any combination thereof. The first and second transceiver elements may comprise a coil antenna, so as to provide means for communicating inductively between a coil antenna of the first transceiver element and a coil antenna of the second transceiver element. 
     The first communication protocol according to the first aspect of the present invention may comprise Bluetooth, CDMA protocol, proprietary wireless link protocol, or any combination thereof. 
     The communication between the first and second transceiver elements may be accomplished in a high frequency range, such as between 800 MHz to 3 GHz. Thus the first and second transceiver element may each comprise a modulator and a demodulator adapted to transform data to high frequency signals communicated between the first and second transceiver. The first and second transceiver element may further each comprise a CODEC adapted to generate said data package. The term “CODEC” is in this context to be construed as an encoder/decoder and/or a compressor/de-compressor. 
     The second communication protocol according to the second aspect of the present invention may comprise CDMA, stream control transmission protocol (SCTP), telephone system&#39;s signalling system 7 (SS7), transmission control protocol/Internet protocol (TCP/IP), serial line Internet protocol (SLIP), point-to-point protocol (PPP), user datagram protocol (UDP), Internet control message protocol (ICMP), interior gateway protocol (IGP), exterior gateway protocol (EGP), border gateway protocol (BGP), or any combination thereof. Further, the second communication protocol may comprise Bluetooth, I 2 C, proprietary wireless link protocol, or any combination thereof. Hence the second communication protocol may encompass the task of handling all required network operations being general, telephone-related, computer-related, or any combinations thereof, such as IP telephony. 
     The server device according to the first aspect of the present invention may comprise memory element adapted to buffer said data to be up- and downloaded on said communication network. The server device may comprise access to a plurality of service providers in the communication network. The service providers advantageously provide all types of services for the hearing device users. For example, the service providers may provide updated hearing aid software with new features, access to a multimedia event, access service information, or any combination thereof. In addition, the server unit may comprise access to a telephone, such as a mobile or cellular telephone or a wired PSTN telephone, a computer, a personal digital assistant, a television, or any combination thereof. 
     The server device according to the first aspect of the present invention may further comprise a location identifying element adapted to identify present location of the server device. The location identifying element may thus advantageously identify a location of the server device, which location may include associations to particular hearing device programs. The term “program” is in this context to be construed as a setting of the hearing device determining the gain transfer function. The gain transfer function may be established according to a particular hearing loss or impairment or may be established according to a particular acoustic environment. Hence the location identifying element may assist in selecting an appropriate program for a hearing aid communicating with the server or, in fact, to a plurality of hearing aids communicating with the server device. 
     The server device according to the first aspect of the present invention may be incorporated in a mobile or cellular telephone. Thus the location identifying element may utilise triangulation for determining location of the server device. Alternatively, the server device may comprise a global positioning system (GPS) module adapted to determine the location of the server device. 
     The server device according to the first aspect of the present invention may be fixed at a permanent location, such as an airport, an aeroplane, a bus, a train, a cinema and the like. Thus the server device may be utilised for controlling one or more hearing devices in the same location with common external noise reduction schemes. That is, the server device may ensure that hearing aids in an aeroplane are controlled so as to reduce the noise experienced by the wearer of the hearing device. Similarly, the server device may also provide audio from the in-flight video as well as service messages to the wearer of the hearing device. 
     The hearing device according to the first aspect of the present invention may further comprise an acoustic environment detector adapted to generate an environment signal to be forwarded as data payload in a data package to an environment service provider in the communication network. The environment signal may comprise amplitude and frequency data relating to acoustic background noise of location of hearing device. The environment service provider may comprise a controller element adapted to generate an environment compensation signal to be forwarded as data payload in a data package to the hearing device. The hearing device may be adapted to utilise the environment compensation signal for increasing signal-to-noise ratio of an audio signal presented to the user of the hearing device. The environment compensation signal may comprise a phase shifted version of the environment signal. Hence the environment service provider may utilise the environment signal for generating a phase shifted copy to be incorporated in the audio signal presented to the user of the hearing device so as to mask the acoustic background noise. The environment service provider according to the first aspect of the present invention may comprise an environment bank memory adapted to store a number of environment compensation signals each associated with a predefined noise situation. 
     The server device according to the first aspect of the present invention may incorporate the environment service provider. Thus the server device may establish a stand alone service for hearing devices connecting thereto. Further, the server device may comprise a broadcasting element adapted to broadcast to any hearing devices in a predefined area of the location of the server device. Thus the environment compensation signal may be utilised for reducing background noise, for example, in an aeroplane for passengers wearing hearing devices. 
     The above objects, advantages and features together with numerous other objects, advantages and features, which will become evident from below detailed description, are obtained according to a second aspect of the present invention by a server device adapted to operate in the system according to the first aspect of the present invention. 
     The server device according to the second aspect of the present invention may incorporate any features of the system and in particular the server device according to the first aspect of the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above, as well as additional objects, features and advantages of the present invention, will be better understood through the following illustrative and non-limiting detailed description of preferred embodiments of the present invention, with reference to the appended drawing, wherein: 
         FIG. 1 , shows a system according to a first embodiment of the present invention; and 
         FIG. 2 , shows a system according to a second embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     In the following description of the various embodiments, reference is made to the accompanying figures, which show by way of illustration how the invention may be practiced. It is to be understood that other embodiments may be utilised and structural and functional modifications may be made without departing from the scope of the present invention. 
       FIG. 1 , shows a system according to a first embodiment of the present invention, which is designated in entirety by reference numeral  100 . The system  100  comprises one or more wearers of hearing devices  102  in a defined area  104 . 
     The hearing devices are designated in entirety by reference numeral  106  and are shown in  FIG. 1  as three sets of hearing devices. The hearing devices  106  may be headsets, headphones, hearing aids, or any combination thereof. 
     Each of the hearing devices  106  comprises an antenna, which may be an inductive coil  108  or a dipole antenna  110 . The antenna  108 ,  110  enable the hearing devices  106  to receive and transmit signals with a server  112 . The server  112  enables each of the connecting hearing devices  106  to access a communications network  114 , which may comprise a computer network, media network, telecommunications network, or any combinations thereof. 
     The server  112  comprises one or more antennas  116 ,  118  for transmitting and receiving data from the hearing devices  106 , which data are configured according to a wireless proprietary protocol especially developed for hearing devices in particular hearing aids. The server  112  comprises a gateway unit  120  for converting data from the antennas from the wireless proprietary protocol to a general communications protocol. The general communications protocol may comprise CDMA, SCTP, SS7, TCP/IP, SLIP, PPP, UDP, ICMP, IGP, EGP, BGP, Bluetooth, I 2 C, a second proprietary protocol, or in fact any combination thereof. 
     The term “gateway” is in this context to be construed as a translator translating from one transmission configuration and/or data configuration to another. 
     The server  112  further comprises an input/output (I/O) unit  122  for connecting to the communications network  114 . The I/O unit  122  thus may connect to a wide variety of services in the communication network  114 , such as a public switched telephone  124 , a cellular or mobile telephone  126 , or a computer  128 . In addition the communications network  114  comprises access to a plurality of services provided by service providers  130 . The service provides  130  comprise an environment service provider  132  for reducing background noise experienced by the hearing devices  106 . 
     The hearing devices  106  comprise acoustic environment detectors generating environment signals forwarded as a data payload in a data package to the environment service provider  132  in the communication network  114 . The environment signals comprise amplitude and frequency data relating to acoustic background of hearing devices  106 . 
     Further, the I/O unit  122  of the server  112  connects to a microphone  134 , which may be applied as a further acoustic environment detector for commonly determining the acoustic environment of the defined area  104 . The server  112  generates an environment signal based on the acoustic environment of the defined area  104 , and forwards the environment signal as a data payload in a data package to the environment service provider  132 . 
     The environment service provider  132  generates an environment compensation signal based on the environment signals, which environment compensation signal is forwarded as a data payload in a data package to the hearing devices  106 . The hearing devices  106  utilise the environment compensation signal for increasing signal-to-noise ratio of an audio signal presented to the wearers  102  of the hearing devices  106 . 
     The environment compensation signal comprises a phase shifted version of the environment signal. Hence the environment service provider  132  may utilise the environment signal for generating a phase shifted copy to be incorporated in the audio signal presented to the wearers  102  of the hearing devices  106  so as to mask the acoustic background noise. 
     In a further embodiment of the present invention the microphone  134  is used for categorising the acoustic environment of the position of the microphone  134 . The server  112  uses this categorisation for broadcasting a control signal to the hearing devices  106  in the defined area  104 . 
     The server  112  further comprises a memory  136  wherein the server  112  stores signal processing settings controlling the signal processing of the hearing devices  106 . The server  112  may thus firstly determine an acoustic environment of the defined area  104  and broadcast a setting to the hearing devices  106 , which setting processes the sound in accordance with the acoustic environment. 
     Similarly, the communications network  114  comprises a storage provider  138  operable by the server  112  to store and communicate an appropriate setting to the hearing devices  106 . 
       FIG. 2  shows a system according to a second embodiment of the present invention and designated in entirety by reference numeral  200 . Elements described with reference to  FIG. 1  having an identical function are designated with the same reference numeral in  FIG. 2 . 
     The system  200  comprises a hearing device  202  communicating with a personal server  204  through antennas  108 ,  118 . The personal server  204  further comprises a second antenna  206  enabling wireless communication with a wireless access service provider  210  connecting to the communication network  114 . The wireless access service provider  210  communicates with the personal server  204  through an antenna  212 . The personal server  204  has a size, which makes it particularly advantageous as a body-worn device. 
     The wireless access service provider  210  thus enables the hearing device access to a wide variety of service provided on the communication network  114 . For example, the hearing device may receive audio streams of travel information, position data, or media content (e.g. radio or sound track of television). 
     As in the server  112 , described with reference to  FIG. 1 , the personal server  204  comprises a memory  136 , which may be utilised storing hearing device  202  specific data such as environmental acoustic data logged during a period, and the wearer&#39;s reactions to the hearing device&#39;s selections of programs in certain acoustic environments. Further, the personal server  204  comprises a processor  214  adapted to assist and/or support a signal processor of the hearing device in calculations performed on the environmental acoustic data. 
     The personal server  204  comprises a user interface (UI)  216  allowing the wearer of the hearing device  202  to control the hearing device  202  and allowing the wearer to control access to the communication network  114 . The UI  216  may comprise a display and keypad for displaying either services provided by the service providers  130  in the communication network  114  or explanatory information from the operation of the hearing device  202 . 
     The second antenna  206 , in a further embodiment of the present invention, connects directly to cellular or mobile phone  126  through antenna  218 . In this embodiment of the present invention, the personal server  204  utilises the cellular or mobile phone  126  for accessing the communication network  114 . 
     In a third embodiment of the present invention, the personal server  204  is incorporated in the cellular or mobile phone  126 , thus enabling accesses to the service providers  130  or devices  124 ,  128  connecting to the communication network  114  by means of the cellular or mobile phone  126 . The cellular or mobile phone  126  incorporates all the features of the server  112  and personal server  204 , described with reference to the figures. 
     The second and third embodiments of the present invention advantageously may thus provide a wearer of a hearing device such as a hearing aid with positioning information, audio streaming etc. In addition, the second and third embodiment may provide an improved user interface for a wearer of a hearing device such as a hearing aid since the wearer is presented with a display and keypad, either directly on the personal server  204  or indirectly on the cellular or wireless phone  126 . 
     The second and third embodiments of the present invention may further advantageously utilise the microphone  134  as a conference microphone recording the voice of the wearer and transmitting the voice to other wearers of hearing devices. 
     Finally, the first, second and third embodiments of the present invention may support the hearing devices  106  in signal processing, for example, in accordance with a hearing impairment, and in calculation of features such as directionality of acoustic signal detected by the hearing devices  106  or noise reduction schemes.