Robert Boschgmbh

Koninklijke Philips Corporation N.v.

Marc Smaak

Stephan Van Tienen

Tom De Brouwer

Brian J Forde

Hans Van Der Schaar

Frank Dunne

Paul C Weinmann

Chen Tchang

Jochem Bonarius

Sjack Schellekens

Henk Goudsmits

Marcel Versteeg

Martien Kas

Ad Hermans

Kees Janse

Rene Derkx

Rene Lurvink

C P Janse

L C A Van Stuivenberg

John Meeusen

Ronald Ten Hove

LCA Van Stuivenberg

CP Janse

Janse Kees

Method and computer network for discovering services in a computer network using Domain Name System Service Discovery (DNS-SD), comprising as components at least a client and a server, the components can be linked by bridges and communicate by a network protocol, whereby the client and the server have a connection-oriented communication path between each other in the computer network, whereby in case of a connection loss one of the components being affected by the connection loss announces itself regularly using DNS-SD until the connection to the client is restored.

Method for network change tolerant service discovery in a computer network

A main device for use in a computer network, wherein the computer network has a topology and comprises a plurality of interconnected devices, wherein each of the plurality of interconnected devices comprises device information and at least one network port, wherein the devices are interconnected with the computer network by network links, each network link connecting two respective network ports, wherein the main device is interconnected with at least one of devices by a connection, and configured to obtain network information, wherein the network information comprised the topology of the computer network and the device information of the plurality of interconnected devices in the network, retrieve a stored network model, wherein the network model comprises a defined topology of the computer network and defined device information, and compare the network information with the network model to provide the differences between the network information and the network model as distinction data.

Main device for use in a computer network, computer network, method for configuring a computer network and computer program

The invention provides for a method for running a computer network and such a computer network. The computer network comprises a number of devices being arranged in a stable daisy-chained loop, wherein each device comprises a bridge having at least three ports, whereby during running the computer network each device can take different states to avoid a loop, and whereby in case of rebooting the ports of at least one of the devices keep their current port states.

Method for running a computer network

Streaming of high bandwidth audio streams using the Internet Protocol on an Ethernet network is common practice. The invention concerns an audio stream networkwith network components, wherein the network components comprise at least one source deviceand a plurality of receiving devices wherein the network components are connected with a network connection, wherein the network connection is using the internet protocol, wherein the source deviceis adapted to provide an audio stream, wherein the audio streamcomprises at least one channel, wherein the receiving devicesare adapted to receive one or more audio streamfrom at least one of the source devices

Audio stream network with network components and method for running and/or configuring the network with network components

In a method for running a computer network () comprising a number of devices (-) being arranged in a daisy-chained loop and running a spanning-tree algorithm () involving handling of state machines (), wherein each device (-) comprises a bridge (-) having at least three ports (-), whereby during running the network () each device (-) can take different states (D, L, F, O) to avoid a loop in the network (), whereby logical port states (D, L, F, O) of the ports are defined by the state machines (), for at least one device (-) at least once before a reboot of the device (-) a momentary state (S) of a state machine () is stored, and in case of rebooting the state (D, L, F, O, S) of the device (-) is restored, if it is successfully validated that the stored state (S) is still valid. A Computer network (), comprising a number of devices (-) being arranged in a daisy-chained loop is adapted for performing the method above.

Method for running a computer network and computer network

Conference systems are often installed in plenary halls and comprise a plurality of microphones for participants of a discussion, whereby the speech signals of the participants are received by the microphones, amplified by the conference system and distributed to the other participants of the discussion. An audio stream arrangement () is proposed comprising: a plurality of audio devices (), whereby each audio device () is adapted to provide an audio stream and whereby each audio device () comprises an audio device network interface () for transmitting its audio stream over a network (), a control device (), whereby the control device () is adapted to send a command over the network () to any of the audio devices () to set the audio device () in an active state, whereby the audio device () in the active state transmits its audio stream over the network (), a processing device () for processing the audio streams from the active audio devices (), whereby the processing device () comprises a processing device network interface () for receiving the audio streams from the network () and a mixing unit () with a plurality of input channels () and an output channel (), whereby each input channel () can be assigned to a audio stream from one active audio device () and whereby the mixing unit () is operable to mix the audio streams from the plurality of input channels () into a common audio stream and to output the common audio stream to the output channel (), whereby the audio streams from the active audio devices () to the processing device are transmitted by a multicast transmission.

Audio stream arrangement

Conference systems are often installed in plenary halls or meeting rooms, whereby such conference systems typically consist of a central equipment and equipment for the participants of the discussion. The central equipment is usually used to control the conference system and supply power to the participant equipment. A conference systemcomprising a plurality of delegate units, whereby the delegate unitscomprise a microphonefor receiving a speech signal from a speaker, a control devicefor providing the delegate unitswith power, a network connectionfor connecting the plurality of delegate unitswith the control device, whereby the network connectionis operable to transmit the power from the control deviceto the delegate units, whereby at least one of the delegate unitsis a control delegate unit, whereby the control delegate unitcomprises a wake-up interface, whereby the conference systemis operable to activate the control deviceand/or the other delegate unitsfrom an un-activated state into an activated state as a reaction to the use of the wake-up interface

Conference system and process for operating the conference system

Conference systems are used for example in discussions and usually comprise a plurality of delegate units with microphones, whereby in a discussion each discussion participant uses his own delegate unit. Usually the delegate units have a switch or the like, that allows the participant in front of the delegate unit to request, that his microphone is activated, so that the speech of the participant is input in the conference system and amplified by the conference system. A conference system comprising () a plurality of delegate units (), each delegate unit () having a microphone () for receiving an audio signal from a surrounding, a central service module () handling a plurality of contribution channels, whereby the audio output of the contribution channels contribute to an amplified audio output of the conference system () is proposed, whereby each delegate unit () is adapted to send a request for a contribution channel commit to the central service module (), whereby the central service module () is adapted to grant the request and to allocate a contribution channel to the requesting delegate unit (), thus setting the requesting delegate unit i in an active state A, whereby the delegate unit () is adapted to trigger the request by voice activation, whereby the request is triggered in case at least a first trigger condition is fulfilled defining that the audio signal level of one of the delegate units () as a possible requesting delegate unit i is higher than an individual test value for each other delegate unit () in the active state A, whereby the individual test value is an estimated audio signal level of the possible requesting unit i resulting from an audio or speech signal provided to the other active delegate units ().

Conference system and process for voice activation in the conference system

A delay unit () for a conference audio system () adapted to delay audio input signals for an adjustable time delay, thereby generating audio output signals, is proposed. The delay unit () comprising a circular buffer (); a write pointer (W) to write a sample (S) of a first input signal to the circular buffer () at a first write position; a read pointer (R) to read a sample from the circular buffer () at a first read position as a sample of a first output signal, whereby the distance between the first write position and the first read position determines a first time delay d; a buffer control module adapted to move the write pointer W to a next position after writing and to move the read pointer (R) to a next position after reading; characterized in that the buffer control module is adapted to adjust a second time delay dby moving the write pointer (W) to a second write position, whereby the distance between the first read position and the second write position determines the second time delay d.

Delay unit for a conference audio system, method for delaying audio input signals, computer program and conference audio system

The invention provides for a method for using a computer network () comprising a number of switches () each having ports for receiving and sending streams, wherein the streams are sent from a router () via the ports of switches (), that have shown interest, to at least one receiver (), whereby in case of a link failure at least one of the at least one receiver () sends back a message to the router.

Method for using a computer network

Recording devices are often used to record discussions, conferences, meetings and the like. The recorded information is reviewed or processed afterwards for example in order to prepare minutes or notes. The known state of the art proposes to use devices comprising two receptacles for tapes. But this solution adds cost to the recording devices, which will not be accepted from all potential buyers as only a small number of the buyers will actually use this functionality. A recording apparatus () for recording of audio signals is proposed comprising an external interface () for an exchangeable storage medium () and an intermediate memory device (), whereby the recording apparatus () is realized to use the intermediate memory device () and the storage medium () for storing the audio signals, whereby the recording apparatus () is realized for an interruption-free storage of the audio-signals during a storage medium () exchange, wherein a first storage medium is exchanged by a second storage medium, whereby during the storage medium () exchange the audio signals are stored on the intermediate memory device () and whereby the audio signals stored on the intermediate memory device () are transferred to the second storage medium.

Recording apparatus and method for a storage medium exchange during recording

Conference audio systems are widely known and are usually used in political or economic debates, at fairs and wherever a plurality of people discuss with each other supported by a microphone-amplifier-loudspeaker system. In known systems each delegate of a conference has a seat with a working table in which the microphone and the loudspeaker is integrated. A conference audio system is proposed comprising a plurality of delegate units (), each delegate unit () having a delegate loud-speaker () and/or a delegate microphone (), a control means () for distributing at least one audio signal from at least one of the delegate microphones () or another sound source to a plurality of the delegate loudspeakers (), the plurality of delegate loud-speakers () generating a common audio atmosphere, delay means () operable to add a time delay on the audio signal, whereby the time delay is dependent from the distance between the position of the delegate microphone () or sound source, respectively, generating the audio signal and the individual delegate loudspeaker () position.

Conference audio system, process for distributing audio signals and computer program

A microphone has at least one non-conductive component with at least one side covered by a metal layer which in turn is covered by a protective layer, and the microphone can be a component of a delegate unit of a conference system or a congress system.

EMI shielding for a microphone

A broadcast system for communicating a broadcast message in a telecommunications system is provided, where the telecommunications system has at least one fixed terminal for communication with one or more portable terminals. The broadcast system includes means for transmitting a first message from the or each fixed terminal for reception by portable terminals in the reception area of that fixed terminal, the message including information that specifies a channel, selected for that fixed terminal, which will be used to convey the broadcast message. A control means is provided for causing the or each portable terminal to receive on the specified broadcast message channel. The transmitter means then transmits from the fixed terminal the broadcast message on the said specified broadcast channel for substantially simultaneous reception and reproduction of the broadcast message, such as an audio broadcast message, by the or each portable terminal. The broadcast message channel is connectionless. The portable terminals may also roam into areas serviced by other fixed terminals and still be capable of receiving the broadcast message. The system is particularly but not essentially based on the Digital Enhanced Telecommunications (DECT) Standard.

Broadcast facility

A location system for establishing the position of a portable terminal that transmits identity information indicative of the identity of the individual terminal is provided. The portable terminals transmit their identity information at a first predetermined power level. The system includes location beacons having a known position and the beacons are capable of receiving the identity information transmitted by the portable terminals. Each location beacon generates an output signal when identity information of a portable terminal is received at that beacon with a power level greater than a predetermined threshold value, which value may be set independently for each beacon. The output signal is indicative that such a portable terminal is within a particular distance range of the beacon and the output signal is made available to a control unit. By providing the control unit with information relating to the position of each of the location beacons, it is possible to establish the position of a particular portable terminal as being within a given range of that known beacon position when the beacon receives identity information associated with that portable terminal with a power level greater than the beacon threshold value. In one embodiment the portable terminals are DECT handsets.

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Bergen op Zoom, Netherlands

Marc Smaak