EP1874082A3 - Device and method for step-size control of an adaptive filter - Google Patents

Device and method for step-size control of an adaptive filter Download PDF

Info

Publication number
EP1874082A3
EP1874082A3 EP07110325A EP07110325A EP1874082A3 EP 1874082 A3 EP1874082 A3 EP 1874082A3 EP 07110325 A EP07110325 A EP 07110325A EP 07110325 A EP07110325 A EP 07110325A EP 1874082 A3 EP1874082 A3 EP 1874082A3
Authority
EP
European Patent Office
Prior art keywords
adaptive filter
frequency bands
analyzing
size control
edge detection
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
EP07110325A
Other languages
German (de)
French (fr)
Other versions
EP1874082B1 (en
EP1874082A2 (en
Inventor
Henning Dr. Puder
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.)
Sivantos GmbH
Original Assignee
Siemens Audioligische Technik GmbH
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 Siemens Audioligische Technik GmbH filed Critical Siemens Audioligische Technik GmbH
Publication of EP1874082A2 publication Critical patent/EP1874082A2/en
Publication of EP1874082A3 publication Critical patent/EP1874082A3/en
Application granted granted Critical
Publication of EP1874082B1 publication Critical patent/EP1874082B1/en
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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
    • 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
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Paper (AREA)
  • Networks Using Active Elements (AREA)

Abstract

The device (6) has an analyzing unit for analyzing an input signal such as microphone signal, in two frequency bands, and comprising an edge detection unit. The edge detection unit detects steep signal edges in the individual frequency bands, where a slope of the edges possesses or exceeds a given measurement. A step determination unit is attached to the analyzing unit for controlling an adaptive filter at an adaptation step based on number of frequency bands. An independent claim is also included for a method for step controlling an adaptive filter to acoustic feedback suppression.
EP07110325A 2006-06-26 2007-06-15 Device and method for step-size control of an adaptive filter Not-in-force EP1874082B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006029194A DE102006029194B4 (en) 2006-06-26 2006-06-26 Device and method for increment control of an adaptive filter

Publications (3)

Publication Number Publication Date
EP1874082A2 EP1874082A2 (en) 2008-01-02
EP1874082A3 true EP1874082A3 (en) 2008-07-02
EP1874082B1 EP1874082B1 (en) 2011-10-19

Family

ID=38514271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07110325A Not-in-force EP1874082B1 (en) 2006-06-26 2007-06-15 Device and method for step-size control of an adaptive filter

Country Status (5)

Country Link
US (1) US8611572B2 (en)
EP (1) EP1874082B1 (en)
AT (1) ATE530032T1 (en)
DE (1) DE102006029194B4 (en)
DK (1) DK1874082T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189006B1 (en) * 2007-09-20 2011-06-29 Phonak AG Method for determining of feedback threshold in a hearing device
US20110026746A1 (en) * 2007-09-20 2011-02-03 Phonak Ag Method for determining of feedback threshold in a hearing device and a hearing device
US8306240B2 (en) * 2008-10-20 2012-11-06 Bose Corporation Active noise reduction adaptive filter adaptation rate adjusting
DE102009016845B3 (en) * 2009-04-08 2010-08-05 Siemens Medical Instruments Pte. Ltd. Arrangement and method for detecting feedback in hearing devices
DE102010007336B4 (en) 2010-02-09 2013-08-08 Siemens Medical Instruments Pte. Ltd. Method for compensating a feedback signal and hearing device
EP2590437B1 (en) 2011-11-03 2015-09-23 Siemens Medical Instruments Pte. Ltd. Periodic adaptation of a feedback suppression device
EP2764710A1 (en) 2011-11-15 2014-08-13 Siemens Medical Instruments Pte. Ltd. Method and device for reducing acoustic feedback
US9628923B2 (en) 2013-12-27 2017-04-18 Gn Hearing A/S Feedback suppression
CN104754485B (en) * 2015-02-06 2018-04-06 哈尔滨工业大学深圳研究生院 A kind of digital deaf-aid echo canceling method based on NLMS algorithm improvements
US20170311095A1 (en) * 2016-04-20 2017-10-26 Starkey Laboratories, Inc. Neural network-driven feedback cancellation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904538C1 (en) * 1999-02-04 2000-07-13 Siemens Audiologische Technik Method of detecting feedback in hearing aid
DE102004050304B3 (en) * 2004-10-14 2006-06-14 Siemens Audiologische Technik Gmbh Method for reducing feedback in an acoustic system and signal processing device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE171833T1 (en) * 1995-05-02 1998-10-15 Toepholm & Westermann METHOD FOR CONTROLLING A PROGRAMMABLE OR PROGRAMMED HEARING AID FOR INSTITUTIONAL FIT SETTING
AU5806300A (en) * 1999-07-19 2001-02-05 Oticon A/S Feedback cancellation using bandwidth detection
US20060093173A1 (en) 2004-10-14 2006-05-04 Volkmar Hamacher Method and signal processor for reducing feedback in an audio system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904538C1 (en) * 1999-02-04 2000-07-13 Siemens Audiologische Technik Method of detecting feedback in hearing aid
DE102004050304B3 (en) * 2004-10-14 2006-06-14 Siemens Audiologische Technik Gmbh Method for reducing feedback in an acoustic system and signal processing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHI H-F ET AL: "Band-limited feedback cancellation with a modified filtered-X LMS algorithm for hearing aids", SPEECH COMMUNICATION, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 39, no. 1-2, 1 January 2003 (2003-01-01), pages 147 - 161, XP002295470, ISSN: 0167-6393 *

Also Published As

Publication number Publication date
DE102006029194A1 (en) 2007-12-27
EP1874082B1 (en) 2011-10-19
EP1874082A2 (en) 2008-01-02
US8611572B2 (en) 2013-12-17
DE102006029194B4 (en) 2010-04-15
US20070297627A1 (en) 2007-12-27
ATE530032T1 (en) 2011-11-15
DK1874082T3 (en) 2012-02-13

Similar Documents

Publication Publication Date Title
EP1874082A3 (en) Device and method for step-size control of an adaptive filter
EP1739657A3 (en) System for adaptive enhancement of speech signals
WO2008051569A3 (en) Entrainment avoidance with pole stabilization
EP2141695B1 (en) Speech sound enhancement device
WO2009022454A1 (en) Voice isolation device, voice synthesis device, and voice quality conversion device
WO2008067396A3 (en) Adaptive cancellation system for implantable hearing instruments
WO2012148077A3 (en) Digital condenser microphone having preamplifier with variable input impedance and method of controlling variable input impedance of preamplifier
WO2007120939A3 (en) Spur suppression for a receiver in a wireless communication system
EP2793225A3 (en) Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
WO2007058910A3 (en) Apparatus and method of selecting components for a reconfigurable impedance match circuit
DE602005017831D1 (en) HÖHRAPPARAT WITH IMPROVED HIGH FREQUENCY PLAYBACK AND METHOD FOR PROCESSING A TONE SIGNAL
WO2006118886A3 (en) Controlling an output while receiving a user input
FR2898209B1 (en) METHOD FOR DEBRUCTING AN AUDIO SIGNAL
WO2007004188A3 (en) Apparatus and method for acoustic beamforming
EP1853089A3 (en) Method for elimination of feedback and for spectral expansion in hearing aids.
WO2009151578A3 (en) Method and apparatus for blind signal recovery in noisy, reverberant environments
ATE484924T1 (en) TIME-ADAPTIVE ADJUSTMENT OF A HEARING AID DEVICE AND CORRESPONDING METHOD
WO2007013981A3 (en) Acoustic feedback cancellation system
WO2009081067A3 (en) Acoustic device for linear perceived-sound attenuation
DE502006004572D1 (en) Method for adjusting a hearing device based on biometric data and corresponding hearing device
WO2006127332A3 (en) Fan noise control apparatus
WO2006106479A3 (en) A method of and a device for processing audio data, a program element and a computer-readable medium
WO2005074129A3 (en) Automatic audio signal dynamic range adjustment
WO2009066401A1 (en) Sound recognition device for audio apparatus
ATE515153T1 (en) HEARING DEVICE WITH SPECIAL SITUATION RECOGNITION UNIT AND METHOD FOR OPERATING A HEARING 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 MT 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 MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

RIC1 Information provided on ipc code assigned before grant

Ipc: H04R 25/00 20060101ALI20080528BHEP

Ipc: H04R 3/02 20060101AFI20070926BHEP

Ipc: H04R 3/00 20060101ALN20080528BHEP

17P Request for examination filed

Effective date: 20080612

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 MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502007008427

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H04R0003020000

Ipc: H04R0025000000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: H04R 25/00 20060101AFI20110419BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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 GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007008427

Country of ref document: DE

Effective date: 20120112

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20111019

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20111019

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: 20120219

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: 20111019

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111019

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: 20111019

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: 20120220

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: 20111019

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: 20120120

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: 20111019

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: 20111019

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

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: 20111019

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: 20111019

Ref country code: IE

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: 20111019

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: 20120119

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: 20111019

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: 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: 20111019

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: 20111019

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: 20111019

26N No opposition filed

Effective date: 20120720

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007008427

Country of ref document: DE

Effective date: 20120720

BERE Be: lapsed

Owner name: SIEMENS AUDIOLOGISCHE TECHNIK G.M.B.H.

Effective date: 20120630

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

Ref country code: MC

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

Effective date: 20120630

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 NON-PAYMENT OF DUE FEES

Effective date: 20120630

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: 20120130

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

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: 20111019

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

Ref country code: MT

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: 20111019

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 530032

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120615

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

Ref country code: AT

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

Effective date: 20120615

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: 20111019

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: 20120615

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: 20070615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007008427

Country of ref document: DE

Representative=s name: FDST PATENTANWAELTE FREIER DOERR STAMMLER TSCH, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007008427

Country of ref document: DE

Representative=s name: FDST PATENTANWAELTE FREIER DOERR STAMMLER TSCH, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502007008427

Country of ref document: DE

Owner name: SIVANTOS GMBH, DE

Free format text: FORMER OWNER: SIEMENS AUDIOLOGISCHE TECHNIK GMBH, 91058 ERLANGEN, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

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

Ref country code: DK

Payment date: 20190624

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20190626

Year of fee payment: 13

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

Ref country code: CH

Payment date: 20190624

Year of fee payment: 13

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

Ref country code: GB

Payment date: 20190624

Year of fee payment: 13

Ref country code: DE

Payment date: 20190624

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007008427

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20200630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200615

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

Ref country code: GB

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

Effective date: 20200615

Ref country code: FR

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

Effective date: 20200630

Ref country code: CH

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

Effective date: 20200630

Ref country code: LI

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

Effective date: 20200630

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: 20210101

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

Ref country code: DK

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

Effective date: 20200630