EP1282336A2 - Procédé d'utilisation d'une système audio sans fil avec allocation dynamique de canaux - Google Patents

Procédé d'utilisation d'une système audio sans fil avec allocation dynamique de canaux Download PDF

Info

Publication number: EP1282336A2
Authority: EP; European Patent Office
Prior art keywords: transmission; individual; audio; channel; frequency
Prior art date: 2001-07-31
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.): Granted

Application number

EP02016679A

Other languages

German (de)

English (en)

Other versions

EP1282336B1 (fr

EP1282336A3 (fr

Inventor

Werner Bauerschmidt

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Grundig Multimedia BV

Original Assignee

Grundig AG

Grundig Multimedia BV

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.)

2001-07-31

Filing date

2002-07-26

Publication date

2003-02-05

2002-07-26 Application filed by Grundig AG, Grundig Multimedia BV filed Critical Grundig AG

2003-02-05 Publication of EP1282336A2 publication Critical patent/EP1282336A2/fr

2005-01-05 Publication of EP1282336A3 publication Critical patent/EP1282336A3/fr

2007-01-10 Application granted granted Critical

2007-01-10 Publication of EP1282336B1 publication Critical patent/EP1282336B1/fr

2022-07-26 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Definitions

the present invention relates to a method for operating a wireless Audio system, and in particular a method according to the preamble of Claim 1.
a wireless audio system operated with such a method is e.g. B. from known from DE 198 29 897 A1.
Such a known audio system comprises an audio signal processing device, which has a central control unit in the form of a microcomputer, a Remote control unit and at least one from the audio signal processing device and the remote control unit is a separate speaker.
the Remote control unit on a radio transmitter and the at least one speaker a radio receiver.
the remote control unit and the at least one speaker also one radio transmitter and one each Radio receiver.
the at least one speaker is for receiving Remote control signals provided from the remote control unit to the at least one speaker can be transmitted.
One in the audio system provided audio transmission system transmits audio signal information from Audio signal processing device to the at least one speaker.
a control unit can be provided for the at least one loudspeaker.
control systems in such a known wireless audio system usually a dynamic channel selection from a predetermined number of Channels with a fixed frequency grid, e.g. Audio signal information from one central control unit to transmit to individual speakers. It is the individual speakers e.g. from the control unit Transmission channel assigned.
a carrier frequency band corresponds to each transmission channel fixed frequency position and fixed frequency bandwidth.
the known audio system usually has several channels in a fixed Frequency grids assigned by the user.
the available radio frequency band does not give a fixed channel grid how to do this e.g. is the case with cordless phones. Rather it becomes a so-called dynamic channel grid used. This means that the respective Control units make a selection according to predetermined reception quality criteria, on which channel with a predetermined frequency a transmission process to be held.
interferers One operates wireless parallel to such a known audio system Headphones or microphones (hereinafter referred to as interferers) for which Frequencies are used that differ from those of the audio transmission system used frequency range overlap, so interference can Audio transmission between the audio transmission unit and the speakers occur.
FIG. 2a For example, an assignment of four shown schematically in FIG. 2a Speakers A, B, C and D to the four channels I, II, III and IV before, and finds then the disturbance of channels II and III outlined in FIG. 2b takes place, then the central control unit a channel reassignment, as shown in Fig. 2b, perform, with speakers B, C and D now channels IV, V and VI can be assigned.
Such an audio transmission system uses only two frequency channels Transmission, one of the two channels usually proves to be sufficient undisturbed, even if the interferers do not work in the same channel grid.
an audio transmission system has additional channels and / or extended an additional central unit, e.g. for simultaneous operation multiple wireless speakers on one TV and one wireless Stereo system, the need for bandwidth will increase and the possibility of Evasion from interferers limited.
the object of the present invention is therefore to provide a method according to the Develop the preamble of claim 1 so that despite limited Bandwidth to avoid or facilitate interference from interferers.
the method according to the invention is based on the knowledge that interferers in usually use no (or any other) channel grid than the audio system. By the measures according to the invention can the usability of Improve frequency band.
each receiver unit e.g. each loudspeaker box
the reception field strength is measured and sent to the central unit via the Control radio link transmitted. There is then from the incoming data Channel image determines that the band occupancy situation for each individual Audio receiving station plays.
the frequencies selected in this way do not necessarily have to be a predetermined channel grid, but can be individual be set, as is provided in accordance with the measures of claim 2.
FIG. 1 shows a schematic representation of a known audio system as it is e.g. is known from DE 198 29 897 A1.
Each of the loudspeakers 3 to 8 comprises a control 31, 41, ..., integrated therein. 81, a single-channel audio signal receiver 32, 42, ..., 82 and one bidirectional radio data transmission unit 33, 43, ..., 83.
Each of the two central units 1 and 2 comprises an integrated controller 11 or 21, a plurality of single-channel audio channel transmitters 12a to 12d or 22a to 22d, and a bidirectional radio data transmission unit 13 or 23.
control signals from the Central units are transmitted to the loudspeakers and via control channels Control signals between the speakers and the central units replaced.
control signals e.g. Control commands regarding a desired volume setting on one of the speakers given two central units to a loudspeaker.
a speaker which receives these control signals is then e.g. a readjustment of the Volume setting. After the readjustment has taken place, you can then use the Control channel feedback from the loudspeaker to the central unit, that the desired volume setting has been made.
the integrated controls 11, 12, 31, 41, ..., 81 are preferably each in Form of a microcomputer.
Each of the integrated controls uses one in the prior art dynamic channel selection from a predetermined number of channels with fixed Frequency grid (channel frequency grid).
the received field strength is measured and on the central unit transmits via the control radio link.
a channel image is then created in the central unit Band occupancy situation for each individual audio receiving station.
Such a channel map for a single receiving station is shown schematically in Fig. 3 shown by the shaded area shown in gray, which of the Fault in the individual channels corresponds. As you can see, find for those there underlying receiving station the strongest interference on channels I, VI and VII instead. Channels II, III, IV and V, on the other hand, are relatively undisturbed, and therefore best for the audio signal transmission to the receiving station under consideration suitable.
the Frequencies not on a previously defined channel grid can be set individually.
FIG. 4 This is shown schematically in FIG. 4.
each speaker 3, 4, 5, ..., 8 an individually optimized Channel assignment can be assigned. This is particularly true for the one in FIG. 1 shown case of two different interferers 1, 2 interesting. Due to the different interferences, these interferers have different effects on the respective speakers. So each speaker has its own, individual interference pattern, as exemplified for a loudspeaker in FIG. 3 is shown.
the measures according to the invention can now be used individually for each individual speaker an appropriate review and dynamic Channel adjustment can be done, which is for the individual speaker Compensate the given disturbance pattern in an individually optimized manner.

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Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
General Physics & Mathematics (AREA)
Stereophonic System (AREA)
Mobile Radio Communication Systems (AREA)
Circuit For Audible Band Transducer (AREA)

EP20020016679 2001-07-31 2002-07-26 Procédé d'utilisation d'une système audio sans fil avec allocation dynamique de canaux Expired - Lifetime EP1282336B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10137404		2001-07-31
DE2001137404 DE10137404C2 (de)	2001-07-31	2001-07-31	Verfahren zum Betreiben eines drahtlosen Audiosystems mit dynamischer Kanalwahl

Publications (3)

Publication Number	Publication Date
EP1282336A2 true EP1282336A2 (fr)	2003-02-05
EP1282336A3 EP1282336A3 (fr)	2005-01-05
EP1282336B1 EP1282336B1 (fr)	2007-01-10

Family

ID=7693799

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20020016679 Expired - Lifetime EP1282336B1 (fr)	2001-07-31	2002-07-26	Procédé d'utilisation d'une système audio sans fil avec allocation dynamique de canaux

Country Status (2)

Country	Link
EP (1)	EP1282336B1 (fr)
DE (2)	DE10137404C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2992704A4 (fr) *	2013-03-15	2016-11-02	Christopher John Regan	Systèmes et procédés de déploiement, de contrôle et de gestion d'un équipement de communication sans fil
US9992734B2 (en)	2013-03-15	2018-06-05	Rf Venue, Inc.	Systems and methods for deploying, controlling, and managing wireless communication equipment

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2007036735A (ja)	2005-07-27	2007-02-08	Sony Corp	ワイヤレス音声伝送システム，音声受信装置，ビデオカメラ及びオーディオミキサー
DE102005054258B4 (de)	2005-11-11	2015-10-22	Sennheiser Electronic Gmbh & Co. Kg	Verfahren zum Zuweisen einer Frequenz für eine drahtlose Audiokommunikation
CN112217586B (zh) *	2019-07-12	2024-02-02	全球能源互联网研究院有限公司	一种步进宽带频谱认知方法和系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4235453C2 (de) *	1992-10-21	1995-03-09	Grundig Emv	Verfahren zur Bestimmung des Belegungszustandes von FDM-Funkübertragungskanälen
US5963848A (en) *	1996-04-24	1999-10-05	Motorola, Inc.	Method and apparatus for assigning a channel to a mobile unit in a wireless communication system
EP0866628A3 (fr) *	1997-03-19	2001-01-31	AT&T Corp.	Système et procédé pour l'allocation dynamique de canaux
DE19829897A1 (de) *	1998-07-06	2000-01-13	Grundig Ag	Vorrichtung zur Wiedergabe von Audiosignalen
CN1242632C (zh) *	1999-02-16	2006-02-15	Ntt移动通信网株式会社	在移动通信系统中无线电信道分配判断方法和无线电信道控制装置
WO2001013565A1 (fr) *	1999-08-16	2001-02-22	Roke Manor Research Limited	Procede permettant d'estimer une interference intercellulaire dans un systeme de telecommunications

2001
- 2001-07-31 DE DE2001137404 patent/DE10137404C2/de not_active Expired - Fee Related
2002
- 2002-07-26 DE DE50209216T patent/DE50209216D1/de not_active Expired - Lifetime
- 2002-07-26 EP EP20020016679 patent/EP1282336B1/fr not_active Expired - Lifetime

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2992704A4 (fr) *	2013-03-15	2016-11-02	Christopher John Regan	Systèmes et procédés de déploiement, de contrôle et de gestion d'un équipement de communication sans fil
US9992734B2 (en)	2013-03-15	2018-06-05	Rf Venue, Inc.	Systems and methods for deploying, controlling, and managing wireless communication equipment

Also Published As

Publication number	Publication date
DE10137404A1 (de)	2002-01-03
DE50209216D1 (de)	2007-02-22
DE10137404C2 (de)	2003-09-25
EP1282336B1 (fr)	2007-01-10
EP1282336A3 (fr)	2005-01-05

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EP1282336A2 - Procédé d'utilisation d'une système audio sans fil avec allocation dynamique de canaux - Google Patents

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