EP1777988A3 - Améliorations apportées à un système d'annonce en public avec circuits isolateurs de zone - Google Patents

Améliorations apportées à un système d'annonce en public avec circuits isolateurs de zone Download PDF

Info

Publication number
EP1777988A3
EP1777988A3 EP06255349A EP06255349A EP1777988A3 EP 1777988 A3 EP1777988 A3 EP 1777988A3 EP 06255349 A EP06255349 A EP 06255349A EP 06255349 A EP06255349 A EP 06255349A EP 1777988 A3 EP1777988 A3 EP 1777988A3
Authority
EP
European Patent Office
Prior art keywords
signal
public address
signal wires
pass
address system
Prior art date
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
EP06255349A
Other languages
German (de)
English (en)
Other versions
EP1777988B1 (fr
EP1777988A2 (fr
Inventor
Eric c/o Protec Fire Detection Plc Priest
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.)
Protec Fire Detection PLC
Original Assignee
Protec Fire Detection PLC
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 Protec Fire Detection PLC filed Critical Protec Fire Detection PLC
Publication of EP1777988A2 publication Critical patent/EP1777988A2/fr
Publication of EP1777988A3 publication Critical patent/EP1777988A3/fr
Application granted granted Critical
Publication of EP1777988B1 publication Critical patent/EP1777988B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/007—Monitoring arrangements; Testing arrangements for public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Amplifiers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Selective Calling Equipment (AREA)
EP06255349A 2005-10-20 2006-10-17 Améliorations apportées à un système d'annonce en public avec circuits isolateurs de zone Not-in-force EP1777988B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0521337A GB2432091B (en) 2005-10-20 2005-10-20 Improvements to a public address system having zone isolator circuits

Publications (3)

Publication Number Publication Date
EP1777988A2 EP1777988A2 (fr) 2007-04-25
EP1777988A3 true EP1777988A3 (fr) 2008-05-28
EP1777988B1 EP1777988B1 (fr) 2009-08-12

Family

ID=35458343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06255349A Not-in-force EP1777988B1 (fr) 2005-10-20 2006-10-17 Améliorations apportées à un système d'annonce en public avec circuits isolateurs de zone

Country Status (4)

Country Link
EP (1) EP1777988B1 (fr)
AT (1) ATE439744T1 (fr)
DE (1) DE602006008402D1 (fr)
GB (1) GB2432091B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019123636A1 (fr) * 2017-12-22 2019-06-27 Toa 株式会社 Système de diffusion
EP4134954B1 (fr) * 2021-08-09 2023-08-02 OPTImic GmbH Procédé et dispositif d'amélioration du signal audio

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB523057A (en) * 1938-11-24 1940-07-04 Guided Radio Corp Improvements in telephone and like electric signalling systems
EP0967833A2 (fr) * 1998-06-27 1999-12-29 Protec Fire Detection Plc Système d'annonce en public avec circuits isolateurs de zone
US20040184598A1 (en) * 2001-10-30 2004-09-23 Integration Associates Inc. Method and apparatus for isolation in a Caller ID or call monitor interface circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989908A (en) * 1975-06-26 1976-11-02 General Signal Corporation Speaker supervision in a public address system
DE3627960C1 (en) * 1986-08-18 1987-09-03 Philips Patentverwaltung Monitoring device for loudspeaker installations
GB2299238B (en) * 1995-03-22 1997-06-11 Audix Communications Limited Loudspeaker and loudspeaker system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB523057A (en) * 1938-11-24 1940-07-04 Guided Radio Corp Improvements in telephone and like electric signalling systems
EP0967833A2 (fr) * 1998-06-27 1999-12-29 Protec Fire Detection Plc Système d'annonce en public avec circuits isolateurs de zone
US20040184598A1 (en) * 2001-10-30 2004-09-23 Integration Associates Inc. Method and apparatus for isolation in a Caller ID or call monitor interface circuit

Also Published As

Publication number Publication date
GB2432091A (en) 2007-05-09
GB2432091B (en) 2009-06-17
EP1777988B1 (fr) 2009-08-12
EP1777988A2 (fr) 2007-04-25
DE602006008402D1 (de) 2009-09-24
ATE439744T1 (de) 2009-08-15
GB0521337D0 (en) 2005-11-30

Similar Documents

Publication Publication Date Title
EP1365628A3 (fr) Présentation dichotique du gradient du second ordre des signaux d'une prothèse auditive directionelle
NO20022672L (no) Fleksibelt detonatorsystem
EP1691483A3 (fr) Circuit d'interface, convertisseur de puissance et machine électrique montée dans un véhicule
TW200614131A (en) Gate driving unit and display device having the same
DE60319451D1 (de) Antennenanbringvorrichtungen
AU2336900A (en) Flexible microsystem and building techniques
EP1978779A3 (fr) Unité de microphone, dispositif d'entrée de voix de proximité, système de traitement des informations et procédé de fabrication de l'unité de microphone
WO2004086366A3 (fr) Systeme de divertissement portable
EP1619782A3 (fr) Convertisseur de puissance avec protection contre les courts-circuits
EP1235370A3 (fr) Module amplificateur optique bidirectionnel
EP2464001A3 (fr) Circuit de commande redondant de moteur
TWI349780B (en) Apparatus for testing a device
WO2002011509A8 (fr) Dispositif d'audition et ensemble forme de tels dispositifs
TW200502908A (en) Shift register and display device having the same
EP1777988A3 (fr) Améliorations apportées à un système d'annonce en public avec circuits isolateurs de zone
EP1467343A3 (fr) Circuits d' attaque pour charge capacitive et appareils d'affichage à plasma avec temporisation ameliorée et consommation de puissance réduite
EP1746817A3 (fr) Interface media
TW200632845A (en) Circuit and method for driving display panel
CA2376687A1 (fr) Dispositif indicateur
WO2001084883A3 (fr) Schema des connexions pour haut-parleur plan
TW200519964A (en) Memory system mounted directly on board and associated method
EP1699135A3 (fr) Circuit de sortie differentiel à faible amplitude et interface de transmission série utilisant le même circuit
TW200705341A (en) POP noise process circuit structure applying to panel display apparatus
AU2003263840A1 (en) Differential signaling transmission circuit
AU2003251479A1 (en) Housing for receiving an electrical device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20081013

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602006008402

Country of ref document: DE

Date of ref document: 20090924

Kind code of ref document: P

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20090812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091212

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091123

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091112

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

26N No opposition filed

Effective date: 20100517

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100501

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091113

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091017

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091017

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090812

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20161019

Year of fee payment: 11

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20171101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171101