EP1792516B1 - Headphone - Google Patents

Headphone Download PDF

Info

Publication number
EP1792516B1
EP1792516B1 EP05787464.6A EP05787464A EP1792516B1 EP 1792516 B1 EP1792516 B1 EP 1792516B1 EP 05787464 A EP05787464 A EP 05787464A EP 1792516 B1 EP1792516 B1 EP 1792516B1
Authority
EP
European Patent Office
Prior art keywords
audio signals
wireless receiver
headset
microphone
information store
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.)
Not-in-force
Application number
EP05787464.6A
Other languages
German (de)
French (fr)
Other versions
EP1792516A1 (en
Inventor
Wolfgang Niehoff
Axel Grell
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.)
Sennheiser Electronic GmbH and Co KG
Original Assignee
Sennheiser Electronic GmbH and Co KG
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 Sennheiser Electronic GmbH and Co KG filed Critical Sennheiser Electronic GmbH and Co KG
Publication of EP1792516A1 publication Critical patent/EP1792516A1/en
Application granted granted Critical
Publication of EP1792516B1 publication Critical patent/EP1792516B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083Reduction of ambient noise
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008Earpieces of the supra-aural or circum-aural type
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H04R2201/107Monophonic and stereophonic headphones with microphone for two-way hands free communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07Applications of wireless loudspeakers or wireless microphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/033Headphones for stereophonic communication

Definitions

  • the present invention relates to a headphone and a headset.
  • the use of active noise cancellation units in headphones is known, for example, from the Sennheiser HDC 451, PXC 250 and HMEC 25 headphones.
  • the background noise or ambient noise is detected by a microphone and fed to the active noise cancellation unit, whereby this background noise is compensated in such a way that the background noise is perceived only quietly.
  • Application for such noise-compensated headphones are known in the cockpit of an aircraft to suppress aircraft noise and privately usable headphones for suppressing the aircraft noise in a passenger cabin.
  • headsets with such a noise compensation can also be provided in the car in order to be able to make calls in the car with as little interference as possible.
  • noise-compensated headphones are connected via a conventional headphone jack, via which the Au audio signal to be transmitted is entered.
  • This audio or external signal can represent, for example, an entertainment program or music on board an aircraft or a telephone signal.
  • This audio signal is fed in via the amplifier located in the noise compensation unit, amplified accordingly and output together with the signals of the noise compensation unit.
  • headsets or headsets which in addition to the headphones also have a voice microphone or a boom microphone.
  • a power supply is provided either by an additional connection or by a battery supply.
  • the active noise compensation unit is connected to the headphones.
  • US 6,567,524 B1 shows a handset with a microphone, an active noise cancellation unit and a wireless receiver.
  • the noise cancellation unit and the wireless receiver may be arranged in a common housing.
  • US 2001/0046304 A1 shows a headset with a microphone, an active noise compensation unit and a wireless receiver.
  • the noise compensation unit and the receiver may be arranged in a common housing.
  • EP 1 094 685 A2 shows a headset with a microphone, an active noise compensation unit, a wireless receiver and an information storage.
  • the noise compensation unit and the wireless receiver may be arranged in a common housing.
  • a headset is provided with a microphone and an active noise cancellation unit to compensate for background noise.
  • the headset includes a wireless receiver for wirelessly receiving an audio signal to be reproduced. Both the active noise cancellation unit and the wireless receiver are housed in the same housing in or on the headset.
  • the headset also has an information storage for storing and reproducing audio signals, the information storage having at least one reproduction converter for reproducing the stored audio signals or the audio signals received by the wireless receiver.
  • the information store is configured to stop playback from the information store when the wireless receiver receives a message.
  • information or audio signals can be intentionally forwarded to the wearer of the headset without these signals being compensated away by the noise canceling unit.
  • the invention is based on the idea of implementing the receiver in or on the headset instead of an additional device for wireless reception of audio signals.
  • an additional device for wireless reception of audio signals Only a single device for active noise cancellation and for wireless reception must be provided, which increases the comfort.
  • FIG. 1 shows a schematic representation of a headphone (K) according to a first example.
  • the headphone (K) has two earcups (OM) and a plug (S).
  • an active noise cancellation unit (ASK) In one of the earcups OM an active noise cancellation unit (ASK), a wireless receiver (I) and a playback transformer (W) is arranged.
  • ASK active noise cancellation unit
  • I wireless receiver
  • W playback transformer
  • audio signals can be wirelessly transmitted to the headphones.
  • the plug (S) can be omitted since now all the audio signals to be reproduced are received via the wireless receiver.
  • the active noise cancellation unit and a wireless receiver is realized in a common housing.
  • FIG. 2 shows a schematic representation of a headphone according to a second example.
  • the headphone in turn has two earcups (OM), in which the playback transducers (W) are arranged. While in the headphone according to the first example, the active noise cancellation unit (ASK) and the wireless receiver (I) have been realized in one of the ear cups (OM), these two units are implemented in an external housing (G). As in the first example, the plug may be omitted when the audio signals to be reproduced are received over the wireless receiver (I).
  • ASK active noise cancellation unit
  • I wireless receiver
  • FIG. 3 shows a headphone according to a third example.
  • the headset is essentially based on the headphone according to the first example.
  • an ear microphone (M) is also provided in the pinna (OM).
  • the ear microphone M is placed under the noise-compensated headphone in the ear canal.
  • An electrical equalization necessary for good speech intelligibility i. Frequency response adjustment, dynamics control and dynamic compression of the ear microphone (M) signal are also implemented together with the Active Noise Compensation Unit (ASK).
  • the equalization unit may be disposed in the headphone / noise enclosure housing.
  • the active noise canceler can be used for bidirectional communication, i. a headset can be realized.
  • the ear microphone (M) used to record the language of a user in the headset.
  • the use of the ear microphone also reduces a problem of biological feedback from a person. People who wear noise-compensated headphones sometimes have a lower voice, since they perceive themselves to be significantly quieter and therefore have no reason to speak louder.
  • a headset can also be provided with a boom microphone instead of or in addition to the ear microphone.
  • the wireless receiver (I) can thereby be realized wirelessly, for example, by DECT, by Bluetooth or by WLAN technology.
  • the receiver (I) may also be implemented as a radio receiver (FM / AM / DAB / DVB-T).
  • a radio transmission receiver such as wireless headphones is possible.
  • an infrared or an ultrasonic receiver is also possible.
  • the invention additionally provides an information memory for storing audio signals.
  • an information memory can be used as a semiconductor memory, as a semiconductor memory with a source reduction function (AAC, MP3, etc.), be designed as a magnetic tape memory or as opto-electronic memory.
  • the information storage is configured to stop playback from the information storage when the wireless information receiver receives a message such as a telephone call. After the end of this message, the reproduction of the audio signals stored in the information memory can be restarted.
  • certain components such as a preamplifier, a power amplifier, or the like, may be common to each other. be used for both the noise compensation signal and the audio signals from the information receiver or the information store, so that these components need not be provided in duplicate.
  • a common volume control, a common power supply and / or a common housing may be provided.
  • the audio player such as an MP3 player may be provided to reproduce the audio data stored in the semiconductor memory.
  • the audio signals to be played back by the audio player may also be received via the wireless receiver.
  • a slot for a semiconductor memory card may also be provided so that corresponding audio data may be stored in advance on the memory card and the audio data stored thereon can then be played back on the audio player, as far as the card is inserted into the slot.
  • a preamplifier, a power amplifier, or the like can be commonly used by the audio player and the active noise canceling unit.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)

Description

Die vorliegende Erfindung betrifft einen Kopfhörer sowie eine Hörsprechgarnitur.The present invention relates to a headphone and a headset.

Die Verwendung von aktiven Geräuschkompensationseinheiten bei Kopfhörern sind beispielsweise durch die Sennheiser-Kopfhörer HDC 451, PXC 250 und HMEC 25 bekannt. Der Störschall bzw. die Umgebungsgeräusche werden durch ein Mikrofon erfasst und der aktiven Störschallkompensationseinheit zugeführt, wodurch dieser Störschall derart kompensiert wird, dass der Störschall lediglich leise wahrgenommen wird. Anwendung für derartige geräuschkompensierte Kopfhörer sind im Cockpit eines Flugzeuges zur Unterdrückung des Fluglärmes sowie privat einsetzbare Kopfhörer zur Unterdrückung des Fluglärmes in einer Passagierkabine bekannt. Ferner können Headsets mit einer derartigen Geräuschkompensation ebenfalls im Auto vorgesehen werden, um möglichst störungsarm in dem Auto telefonieren zu können.The use of active noise cancellation units in headphones is known, for example, from the Sennheiser HDC 451, PXC 250 and HMEC 25 headphones. The background noise or ambient noise is detected by a microphone and fed to the active noise cancellation unit, whereby this background noise is compensated in such a way that the background noise is perceived only quietly. Application for such noise-compensated headphones are known in the cockpit of an aircraft to suppress aircraft noise and privately usable headphones for suppressing the aircraft noise in a passenger cabin. Furthermore, headsets with such a noise compensation can also be provided in the car in order to be able to make calls in the car with as little interference as possible.

Üblicherweise werden derartige geräuschkompensierte Kopfhörer über einen üblichen Kopfhöreranschluss angeschlossen, über den das zu übertragene Au-Audiosignal eingegeben wird. Dieses Audio- bzw. Fremdsignal kann beispielsweise ein Unterhaltungsprogramm oder Musik an Bord eines Flugzeuges oder ein Telefonsignal darstellen. Dieses Audiosignal wird über den in der Geräuschkompensationseinheit befindlichen Verstärker eingespeist, entsprechend verstärkt und zusammen mit den Signalen der Geräuschkompensationseinheit ausgegeben.Usually, such noise-compensated headphones are connected via a conventional headphone jack, via which the Au audio signal to be transmitted is entered. This audio or external signal can represent, for example, an entertainment program or music on board an aircraft or a telephone signal. This audio signal is fed in via the amplifier located in the noise compensation unit, amplified accordingly and output together with the signals of the noise compensation unit.

Bekannt sind ferner Hörsprechgarnituren bzw. Headsets, welche neben dem Kopfhörer auch ein Sprachmikrofon bzw. ein Boommikrofon aufweisen. Eine Stromversorgung erfolgt entweder durch einen zusätzlichen Anschluss oder durch eine Batterieversorgung. Die aktive Geräuschkompensationseinheit ist hierbei mit dem Kopfhörer verbunden.Also known are headsets or headsets, which in addition to the headphones also have a voice microphone or a boom microphone. A power supply is provided either by an additional connection or by a battery supply. The active noise compensation unit is connected to the headphones.

Abgesehen von diesen Fällen, bei denen eine tatsächliche bidirektionale Kommunikation ermöglicht sein soll, sind auch Anwendungen vorhanden, bei denen die Geräuschkompensation im Vordergrund steht. Beispiele dazu sind der Industrielärmschutz, und ein Hören von Musik in einer lärmerfüllten Umgebung wie beispielsweise in Zügen oder beim Rasen mähen.Apart from these cases, where an actual bi-directional communication is to be enabled, there are also applications in which the noise compensation is in the foreground. Examples include industrial noise protection, and listening to music in a noisy environment such as trains or lawn mowing.

US 6,567,524 B1 zeigt einen Hörer mit einem Mikrofon, einer aktiven Störschallkompensationseinheit und einem drahtlosen Empfänger. Die Störschallkompensationseinheit und der drahtlose Empfänger können in einem gemeinsamen Gehäuse angeordnet sein. US 6,567,524 B1 shows a handset with a microphone, an active noise cancellation unit and a wireless receiver. The noise cancellation unit and the wireless receiver may be arranged in a common housing.

US 2001/0046304 A1 zeigt ein Headset mit einem Mikrofon, einer aktiven Lärmkompensationseinheit und einem Drahtlosempfänger. Die Lärmkompensationseinheit und der Empfänger können in einem gemeinsamen Gehäuse angeordnet sein. US 2001/0046304 A1 shows a headset with a microphone, an active noise compensation unit and a wireless receiver. The noise compensation unit and the receiver may be arranged in a common housing.

EP 1 094 685 A2 zeigt ein Headset mit einem Mikrofon, einer aktiven Lärmkompensationseinheit, einem Drahtlosempfänger und einem Informationsspeicher. Die Lärmkompensationseinheit und der Drahtlosempfänger können in einem gemeinsamen Gehäuse angeordnet sein. EP 1 094 685 A2 shows a headset with a microphone, an active noise compensation unit, a wireless receiver and an information storage. The noise compensation unit and the wireless receiver may be arranged in a common housing.

Es ist somit Aufgabe der vorliegenden Erfindung, eine Hörsprechgarnitur mit aktiver Geräuschkompensation vorzusehen, wobei ein Übermitteln bzw. Wiedergeben von Audiosignalen verbessert wird.It is therefore an object of the present invention to provide a headset with active noise compensation, wherein a transmission or reproduction of audio signals is improved.

Diese Aufgabe wird durch eine Hörsprechgarnitur gemäß Anspruch 1 gelöst.This object is achieved by a headset according to claim 1.

Somit wird eine Hörsprechgarnitur mit einem Mikrofon und einer aktiven Störschallkompensationseinheit zur Kompensation von Störschall vorgesehen. Zusätzlich dazu weist der Kopfhörer einen drahtlosen Empfänger zum drahtlosen Empfangen eines wiederzugebenen Audiosignals auf. Sowohl die aktive Störschallkompensationseinheit als auch der drahtlose Empfänger sind in demselben Gehäuse in oder an der Hörsprechgarnitur untergebracht. Die Hörsprechgarnitur weist ebenfalls einen Informationsspeicher zum Speichern und Wiedergeben von Audiosignalen auf, wobei der Informationsspeicher mindestens einen Wiedergabewandler zum Wiedergeben der gespeicherten Audiosignale oder der durch den Drahtlosempfänger empfangenen Audiosignale aufweist. Der Informationsspeicher ist dazu ausgestaltet, die Wiedergabe aus dem Informationsspeicher anzuhalten, wenn der Drahtlosempfänger eine Nachricht empfängt.Thus, a headset is provided with a microphone and an active noise cancellation unit to compensate for background noise. In addition to this, points the headset includes a wireless receiver for wirelessly receiving an audio signal to be reproduced. Both the active noise cancellation unit and the wireless receiver are housed in the same housing in or on the headset. The headset also has an information storage for storing and reproducing audio signals, the information storage having at least one reproduction converter for reproducing the stored audio signals or the audio signals received by the wireless receiver. The information store is configured to stop playback from the information store when the wireless receiver receives a message.

Durch das Vorsehen des drahtlosen Empfängers, können Informationen bzw. Audiosignale gerichtet bzw. absichtlich an den Träger des Kopfhörers weitergeleitet werden, ohne dass diese Signale von der Störschallkompensationseinheit wegkompensiert werden.By providing the wireless receiver, information or audio signals can be intentionally forwarded to the wearer of the headset without these signals being compensated away by the noise canceling unit.

Die Erfindung beruht auf dem Gedanken, anstatt eines zusätzlichen Gerätes zum drahtlosen Empfangen von Audiosignalen den Empfänger in bzw. an dem Kopfhörer bzw. der Hörsprechgarnitur zu implementieren. Somit muss lediglich ein einzelnes Gerät für die aktive Störschallkompensation und für den drahtlosen Empfang vorgesehen werden, was den Tragekomfort erhöht.The invention is based on the idea of implementing the receiver in or on the headset instead of an additional device for wireless reception of audio signals. Thus, only a single device for active noise cancellation and for wireless reception must be provided, which increases the comfort.

Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Nachfolgend wird die Erfindung detailliert unter Bezugnahme auf die Zeichnungen beschrieben.

Figur 1
zeigt eine schematische Ansicht eines Kopfhörers gemäß einem ersten Beispiel,
Figur 2
zeigt eine schematische Darstellung eines Kopfhörers gemäß einem zweiten Beispiel, und
Figur 3
zeigt eine schematische Darstellung einer Hörsprechgarnitur gemäß einem dritten Beispiel.
Hereinafter, the invention will be described in detail with reference to the drawings.
FIG. 1
shows a schematic view of a headphone according to a first example,
FIG. 2
shows a schematic representation of a headphone according to a second example, and
FIG. 3
shows a schematic representation of a headset according to a third example.

Figur 1 zeigt eine schematische Darstellung eines Kopfhörers (K) gemäß einem ersten Beispiel. Der Kopfhörer (K) weist zwei Ohrmuscheln (OM) sowie einen Stecker (S) auf. In einer der Ohrmuscheln OM ist eine aktive Störschallkompensationseinheit (ASK), ein drahtloser Empfänger (I) und ein Wiedergabewandeler (W) angeordnet. Durch den drahtlosen Empfänger (I) können Audiosignale drahtlos an den Kopfhörer übertragen werden. Durch das Vorsehen des drahtlosen Empfängers (I) kann der Stecker (S) entfallen, da nunmehr alle wiederzugebenen Audiosignale über den drahtlosen Empfänger empfangen werden. Somit wird die aktive Störschallkompensationseinheit und ein drahtloser Empfänger in einem gemeinsamen Gehäuse realisiert. FIG. 1 shows a schematic representation of a headphone (K) according to a first example. The headphone (K) has two earcups (OM) and a plug (S). In one of the earcups OM an active noise cancellation unit (ASK), a wireless receiver (I) and a playback transformer (W) is arranged. Through the wireless receiver (I) audio signals can be wirelessly transmitted to the headphones. By providing the wireless receiver (I), the plug (S) can be omitted since now all the audio signals to be reproduced are received via the wireless receiver. Thus, the active noise cancellation unit and a wireless receiver is realized in a common housing.

Figur 2 zeigt eine schematische Darstellung eines Kopfhörers gemäß einem zweiten Beispiel. Der Kopfhörer weist wiederum zwei Ohrmuscheln (OM) auf, in denen die Wiedergabewandler (W) angeordnet sind. Während im Kopfhörer gemäß dem ersten Beispiel die aktive Störschallkompensationseinheit (ASK) und der drahtlose Empfänger (I) in einer der Ohrmuscheln (OM) realisiert worden sind, werden diese beiden Einheiten in einem externen Gehäuse (G) implementiert. Wie gemäß dem ersten Beispiel kann der Stecker entfallen, wenn die wiederzugebenen Audiosignale über dem drahtlosen Empfänger (I) empfangen werden. FIG. 2 shows a schematic representation of a headphone according to a second example. The headphone in turn has two earcups (OM), in which the playback transducers (W) are arranged. While in the headphone according to the first example, the active noise cancellation unit (ASK) and the wireless receiver (I) have been realized in one of the ear cups (OM), these two units are implemented in an external housing (G). As in the first example, the plug may be omitted when the audio signals to be reproduced are received over the wireless receiver (I).

Figur 3 zeigt einen Kopfhörer gemäß einem dritten Beispiel. Der Kopfhörer basiert im Wesentlichen auf dem Kopfhörer gemäß dem ersten Beispiel. Zusätzlich zu dem drahtlosen Empfänger (I) und der aktiven Störschallkompensationseinheit (ASK) ist ein Ohrmikrofon (M) ebenfalls in der Ohrmuschel (OM) vorgesehen. Vorzugsweise wird das Ohrmikrofon M unter dem geräuschkompensierten Kopfhörer im Ohrkanal angeordnet. Somit erfolgt die Sprachaufnahme dieses Ohrmikrofons über die eustachische Röhre, welche eine Verbindung zwischen dem Mund/Rachenraum und dem Innenrohr darstellt. FIG. 3 shows a headphone according to a third example. The headset is essentially based on the headphone according to the first example. In addition to the wireless receiver (I) and the active noise cancellation unit (ASK), an ear microphone (M) is also provided in the pinna (OM). Preferably, the ear microphone M is placed under the noise-compensated headphone in the ear canal. Thus, the voice recording of this ear mic via the eustachian tube, which is a connection between the mouth / throat and the inner tube.

Eine für eine gute Sprachverständigung notwendige elektrische Entzerrung, d.h. eine Frequenzganganpassung, eine Dynamikregelung und eine Dynamikkompression des Signals des Ohrmikrofons (M) wird ebenfalls zusammen mit der aktiven Störschallkompensationseinheit (ASK) implementiert. Alternativ dazu kann die Entzerrungseinheit in dem Kopfhörer/Schallschutzkappengehäuse angeordnet sein. Mit einem derartigen Kopfhörer mit Ohrmikrofon kann der aktive Störschallkopfhörer zu einer bidirektionalen Kommunikation verwendet werden, d.h. eine Hörsprechgarnitur kann realisiert werden. Während bei herkömmlichen (Boom-)Mikrofonen eine gute Störschallaufbereitung nur dann möglich ist, wenn das Mikron in der Nähe am Mund getragen wird, um ein ausreichendes Signal, zum Geräuschverhältnis für die Gegenstelle zu implementieren, wird gemäß dem dritten Ausführungsbeispiel das Ohrmikrofon (M) verwendet, um die Sprache eines Anwenders in der Hörsprechgarnitur aufzuzeichnen. Durch die Verwendung des Ohrmikrofons wird ferner ein Problem des biologischen Feedbacks einer Person reduziert. Bei Personen, die geräuschkompensierte Kopfhörer tragen, kommt es vor, dass sie leiser sprechen, da sie sich subjektiv deutlich leiser wahrnehmen und somit keinen Grund haben lauter zu sprechen.An electrical equalization necessary for good speech intelligibility, i. Frequency response adjustment, dynamics control and dynamic compression of the ear microphone (M) signal are also implemented together with the Active Noise Compensation Unit (ASK). Alternatively, the equalization unit may be disposed in the headphone / noise enclosure housing. With such earphone microphone, the active noise canceler can be used for bidirectional communication, i. a headset can be realized. While in conventional (boom) microphones, a good noise treatment is only possible if the micron is worn close to the mouth in order to implement a sufficient signal to the noise ratio for the remote station, according to the third embodiment, the ear microphone (M) used to record the language of a user in the headset. The use of the ear microphone also reduces a problem of biological feedback from a person. People who wear noise-compensated headphones sometimes have a lower voice, since they perceive themselves to be significantly quieter and therefore have no reason to speak louder.

Alternativ zum oben Angeführten kann eine Hörsprechgarnitur auch mit einem Boommikrofon anstatt bzw. zusätzlich zum Ohrmikrofon vorgesehen werden.As an alternative to the above, a headset can also be provided with a boom microphone instead of or in addition to the ear microphone.

Der drahtlose Empfänger (I) gemäß dem ersten, zweiten und dritten Beispiel kann dabei drahtlos beispielsweise durch DECT-, durch Bluetooth- oder durch WLAN-Technologie realisiert werden. Alternativ dazu kann der Empfänger (I) ebenfalls als ein Rundfunkempfänger (FM/AM/DAB/DVB-T) implementiert werden. Ferner ist ein Funkübertragungsempfänger wie beispielsweise bei drahtlosen Kopfhörern möglich. Alternativ dazu ist ebenfalls ein Infrarot- oder ein Ultraschallempfänger möglich.The wireless receiver (I) according to the first, second and third examples can thereby be realized wirelessly, for example, by DECT, by Bluetooth or by WLAN technology. Alternatively, the receiver (I) may also be implemented as a radio receiver (FM / AM / DAB / DVB-T). Further, a radio transmission receiver such as wireless headphones is possible. Alternatively, an infrared or an ultrasonic receiver is also possible.

Während gemäß dem ersten, zweiten und dritten Beispiel ein drahtloser Empfänger (I) beschrieben worden ist, ist bei der Erfindung zusätzlich ein Informationsspeicher zum Speichern von Audiosignalen vorgesehen . Ein derartiger Informationsspeicher kann als Halbleiterspeicher, als Halbleiterspeicher mit einer Quellenreduktionsfunktion (AAC, MP3, etc.), als ein Magnetbandspeicher oder als opto-elektronischer Speicher ausgestaltet sein.While a wireless receiver (I) has been described according to the first, second and third examples, the invention additionally provides an information memory for storing audio signals. Such an information memory can be used as a semiconductor memory, as a semiconductor memory with a source reduction function (AAC, MP3, etc.), be designed as a magnetic tape memory or as opto-electronic memory.

Wenn sowohl der Informationsspeicher als auch der drahtlose Empfänger (I) zusammen implementiert werden, ist der Informationsspeicher derart ausgestaltet, dass die Wiedergabe aus dem Informationsspeicher angehalten wird, wenn der drahtlose Informationsempfänger eine Nachricht wie beispielsweise ein Telefonat, empfängt. Nach Ende dieser Nachricht kann die Wiedergabe der in dem Informationsspeicher gespeicherten Audiosignale wieder gestartet werden.When both the information storage and the wireless receiver (I) are implemented together, the information storage is configured to stop playback from the information storage when the wireless information receiver receives a message such as a telephone call. After the end of this message, the reproduction of the audio signals stored in the information memory can be restarted.

Durch die gemeinsame Implementation der aktiven Störschallkompensationseinheit und dem Informationsempfänger bzw. dem Informationsspeicherkönnen bestimmte Komponenten wie beispielsweise ein Vorverstärker, ein Endverstärker oder dgl. gemeinsam, d.h. sowohl für das Geräuschkompensationssignal als auch die Audiosignale von dem Informationsempfänger bzw. dem Informationsspeicher verwendet werden, so dass diese Komponenten nicht doppelt vorgesehen sein müssen. Ferner kann ein gemeinsamer Lautstärkeregler, eine gemeinsame Stromversorgung und/oder ein gemeinsames Gehäuse vorgesehen werden.Through the joint implementation of the active noise cancellation unit and the information receiver, certain components, such as a preamplifier, a power amplifier, or the like, may be common to each other. be used for both the noise compensation signal and the audio signals from the information receiver or the information store, so that these components need not be provided in duplicate. Furthermore, a common volume control, a common power supply and / or a common housing may be provided.

Durch die Verwendung der oben beschriebenen Hörsprechgarnitur mit Ohrmikrofon und aktiver Störschallkompensationseinheit (ASK) in Kombination mit dem drahtlosen Empfänger (I) kann eine drahtlose bidirektionale störschallkompensierte Kommunikation ermöglicht werden.By using the above-described headset with ear microphone and active noise cancellation unit (ASK) in combination with the wireless receiver (I), a wireless bidirectional noise-canceling communication can be made possible.

In dem oben beschriebenen Kopfhörer bzw. der oben beschriebenen Hörsprechgarnitur kann ein Audioplayer wie beispielsweise ein MP3-Player vorgesehen werden, um die in dem Halbleiterspeicher gespeicherten Audiodaten wiederzugeben. Alternativ dazu können die durch den Audioplayer wiederzugebenden Audiosignale ebenfalls über den drahtlosen Empfänger empfangen werden. Alternativ dazu kann ebenfalls ein Steckplatz für eine Halbleiterspeicherkarte vorgesehen werden, so dass entsprechende Audiodaten vorab auf der Speicherkarte gespeichert werden können und die darauf gespeicherten Audiodaten anschließend über den Audioplayer wiedergegeben werden können, soweit die Karte in den Steckplatz eingeführt wird.In the above-described headset, the audio player such as an MP3 player may be provided to reproduce the audio data stored in the semiconductor memory. Alternatively, the audio signals to be played back by the audio player may also be received via the wireless receiver. Alternatively, a slot for a semiconductor memory card may also be provided so that corresponding audio data may be stored in advance on the memory card and the audio data stored thereon can then be played back on the audio player, as far as the card is inserted into the slot.

Durch eine Integrierung des MP3-Players in den oben angeführten Kopfhörer bzw. in die oben angeführte Hörsprechgarnitur kann beispielsweise ein Vorverstärker, ein Endverstärker oder dergleichen gemeinsam durch den Audioplayer und die aktive Störschallkompensationseinheit verwendet werden.By integrating the MP3 player in the above-mentioned headphones or in the above-mentioned headset, for example, a preamplifier, a power amplifier, or the like can be commonly used by the audio player and the active noise canceling unit.

Claims (4)

  1. Headset, having
    a microphone (M) for receiving speech signals of a wearer,
    an active ambient noise compensation unit (ASK) for active compensation of ambient noise, and
    a wireless receiver (I) for wirelessly receiving an audio signal which is intended to be reproduced,
    wherein the active ambient noise compensation unit (ASK) and the wireless receiver (I) are arranged in a common housing (G, OM) in or on the headset, and having
    an information store for storing and reproducing audio signals, and having
    at least one reproduction converter for reproducing the stored audio signals or the audio signals received by the wireless receiver,
    characterised in that
    the information store is configured to stop the reproduction from the information store when the wireless receiver (I) receives a communication.
  2. Headset according to claim 1, having
    an ear cup (OM),
    wherein the microphone is arranged as an ear microphone (M) in the ear cup (OM) of a wearer.
  3. Headset according to either of the preceding claims,
    wherein the information store is configured to start the reproduction of the audio signals stored in the information store again after the end of the communication.
  4. Headset according to any one of the preceding claims, having
    a volume control, wherein the volume control is used jointly for the audio signals from the receiver (I) and for the audio signals from the information store.
EP05787464.6A 2004-09-10 2005-09-09 Headphone Not-in-force EP1792516B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004044280A DE102004044280A1 (en) 2004-09-10 2004-09-10 headphone
PCT/EP2005/009696 WO2006027257A1 (en) 2004-09-10 2005-09-09 Headphone

Publications (2)

Publication Number Publication Date
EP1792516A1 EP1792516A1 (en) 2007-06-06
EP1792516B1 true EP1792516B1 (en) 2015-08-05

Family

ID=35464888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05787464.6A Not-in-force EP1792516B1 (en) 2004-09-10 2005-09-09 Headphone

Country Status (7)

Country Link
US (1) US20070258608A1 (en)
EP (1) EP1792516B1 (en)
CN (1) CN101015229A (en)
CA (1) CA2578607A1 (en)
DE (1) DE102004044280A1 (en)
RU (1) RU2007113193A (en)
WO (1) WO2006027257A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009005302B4 (en) 2009-01-16 2022-01-05 Sennheiser Electronic Gmbh & Co. Kg Protective helmet and device for active noise suppression
PL3466104T3 (en) 2016-05-26 2020-11-16 3M Innovative Properties Company Acoustic headset with integrated two-way digital and analog communication components
DE102016012172A1 (en) * 2016-10-12 2018-04-12 Frank Baumann WIFI, Wi-Fi, DAB, DAB +, VHF headphones
DE102020121117B3 (en) 2020-08-11 2021-11-25 Kekz Gmbh Interactive headphone system and headphones for storing and playing back audio content

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094685A2 (en) * 1999-10-20 2001-04-25 Central Research Laboratories Limited A headphone system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5694467A (en) * 1996-05-10 1997-12-02 Hewlett Packard Company Integrated sound/telephone headset system
US6006115A (en) * 1997-10-15 1999-12-21 Sony Corporation Wireless headphones for entertainment and telephonic communication
KR20010007135A (en) * 1999-05-31 2001-01-26 니시무로 타이죠 Sound system and sound device equipped with headphone
US20010046304A1 (en) 2000-04-24 2001-11-29 Rast Rodger H. System and method for selective control of acoustic isolation in headsets
FI110296B (en) * 2000-05-26 2002-12-31 Nokia Corp Hands-free function
NO312570B1 (en) 2000-09-01 2002-05-27 Sintef Noise protection with verification device
JP2003280693A (en) * 2002-03-22 2003-10-02 Toshiba Corp Playback unit, headphone, and playback method
US20050027385A1 (en) * 2003-08-01 2005-02-03 Wen-Hsiang Yueh MP3 player having a wireless earphone communication with a mobile
US20060013410A1 (en) * 2004-04-20 2006-01-19 Wurtz Michael J Mobile-telephone adapters for automatic-noise-reduction headphones
US20070117549A1 (en) * 2005-10-06 2007-05-24 Arnos Reed W Wireless handset and methods for use therewith

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094685A2 (en) * 1999-10-20 2001-04-25 Central Research Laboratories Limited A headphone system

Also Published As

Publication number Publication date
RU2007113193A (en) 2008-10-20
US20070258608A1 (en) 2007-11-08
CN101015229A (en) 2007-08-08
DE102004044280A1 (en) 2006-03-16
CA2578607A1 (en) 2006-03-16
WO2006027257A1 (en) 2006-03-16
EP1792516A1 (en) 2007-06-06

Similar Documents

Publication Publication Date Title
DE69833746T2 (en) WIRE-BELTED CUDDLE FOR OPEN HEARING
DE69827245T2 (en) ELEMENT FOR SUPPRESSING NOISE
DE69831230T2 (en) WIRELESS CUDDLE FOR OPEN HEARING
DE3843292C2 (en) Headphone hearing aid
DE69531413T2 (en) Transceiver with an acoustic transducer of the earpiece type
DE3115923A1 (en) Intercom device
EP2782260B1 (en) Method and apparatus for controlling voice communication and use thereof
EP0390386A2 (en) Noise reducing device
EP3430819B1 (en) Earphones having separate microphones for binaural recordings and for telephoning
EP0949795A2 (en) Digital voice enhancement system
EP1792516B1 (en) Headphone
DE3826294A1 (en) Hands-free device for communications systems
DE102020126873A1 (en) MODULAR HEAD-PORTABLE SPEAKER SYSTEM
DE102005012975B3 (en) Hearing aid apparatus with music play back apparatus provided by wireless transmission between two hearing aids
DE602006000772T2 (en) The hearing instrument
US20050008167A1 (en) Device for picking up/reproducing audio signals
DE10117705C2 (en) Cascaded capsule hearing protection system
DE102007046593A1 (en) Handset and method for active noise compensation
EP3643078B1 (en) Communication systems, breathing mask and helmet
DE19926552B4 (en) Headphones with microphone
DE10344032A1 (en) Hearing system suitable for people with hearing loss
DE4019529A1 (en) Headset outfit microphone mount and 2 earphones - has hoop shaped to fit over helmet with transducers held clear of outermost plane of ear
DE19926820C2 (en) ear protection
DE3115934A1 (en) Intercom device with automatic changeover from transmission to reception
US6064893A (en) Mobile telephone system

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

17P Request for examination filed

Effective date: 20070410

AK Designated contracting states

Kind code of ref document: A1

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

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20090417

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502005014884

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H04R0005033000

Ipc: H04R0001100000

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 1/10 20060101AFI20150212BHEP

Ipc: H04R 5/033 20060101ALI20150212BHEP

INTG Intention to grant announced

Effective date: 20150318

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 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: AT

Ref legal event code: REF

Ref document number: 741251

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502005014884

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150805

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

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: 20150805

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: 20151106

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: 20150805

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: 20150805

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

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: 20150805

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: 20150805

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: 20151207

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: 20151205

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: 20150805

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: 20150805

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: 20150805

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: 20150805

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: 20150805

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: 20150805

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: 20150805

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502005014884

Country of ref document: DE

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

Effective date: 20150805

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: 20150805

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

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160531

26N No opposition filed

Effective date: 20160509

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

Effective date: 20151105

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

Ref country code: IE

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

Effective date: 20150909

Ref country code: CH

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

Effective date: 20150930

Ref country code: LI

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

Effective date: 20150930

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

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: 20150805

Ref country code: FR

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

Effective date: 20151005

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: 20151105

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 741251

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150909

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: 20150909

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; INVALID AB INITIO

Effective date: 20050909

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: 20150805

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: 20150805

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: 20150930

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: 20150805

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: 20150909

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

Ref country code: DE

Payment date: 20190828

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005014884

Country of ref document: DE

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: 20210401