公开(公告)号：US5303308A

公开(公告)日：1994-04-12

申请号：US909896

申请日：1992-07-07

Applicant: Leo Larsen ,  Jens Madsen

Inventor： Leo Larsen ,  Jens Madsen

IPC: H04M1/60 ,  H03G7/00 ,  A61F11/06 ,  H03G3/00 ,  H04B1/64

CPC classification number: H04M1/6016

Abstract: An audio frequency compressing system for amplifying an input signal to produce a power output signal while removing high-level signals which could harm a listener. Gain control in the feedback path of an amplifier includes both a gain controller circuit for supplying a constant feedback impedance and a plurality of resistors which can be coupled to the gain controller circuit to increase or decrease the feedback impedance. Coupling of the resistors to the gain controller circuit is controlled by a feedback control circuit having both an automatic gain control circuit and a continuous high-level protection circuit.

Abstract translation: 一种音频压缩系统，用于放大输入信号以产生电力输出信号，同时去除可能损害听众的高电平信号。 放大器的反馈路径中的增益控制包括用于提供恒定反馈阻抗的增益控制器电路和可以耦合到增益控制器电路以增加或减少反馈阻抗的多个电阻器。 电阻器与增益控制器电路的耦合由具有自动增益控制电路和连续高电平保护电路的反馈控制电路控制。

公开(公告)号：USD327068S

公开(公告)日：1992-06-16

申请号：US445323

申请日：1989-12-01

Applicant: Jan Hampf ,  Karsten Langhorn ,  Leo Larsen

Designer： Jan Hampf ,  Karsten Langhorn ,  Leo Larsen

公开(公告)号：USD311521S

公开(公告)日：1990-10-23

申请号：US176386

申请日：1988-03-30

Applicant: Bjarne Jonsson ,  Finn Jensen ,  Karsten Langhorn ,  Nikolai Bisgaard

Designer： Bjarne Jonsson ,  Finn Jensen ,  Karsten Langhorn ,  Nikolai Bisgaard

公开(公告)号：US4893344A

公开(公告)日：1990-01-09

申请号：US248490

申请日：1988-09-23

Applicant: Jan Tragardh ,  Bjarne Jonsson ,  Finn Jensen

Inventor： Jan Tragardh ,  Bjarne Jonsson ,  Finn Jensen

IPC: H04M1/05 ,  H04R1/10

CPC classification number: H04R1/1066 ,  H04M1/05 ,  H04R1/105 ,  H04R1/1008 ,  H04R2201/107 ,  H04R2201/109

Abstract: A headset (1) with sound receiving microphone (6) and sound reproducing transducer (3) is arranged to be worn on a person's outer ear (2). For this purpose, the headset has a post auricle mount (9) with a lengthwise adjustable stabilizer (10) behind the ear, said post auricle mount being secured to the sound reproducing transducer housing (3) in a pivotable manner, hereby enabling it to be swivelled in several directions.

Abstract translation: 具有声音接收麦克风（6）和声音再现传感器（3）的耳机（1）被布置成佩戴在人的外耳（2）上。 为此目的，头戴式耳机具有耳后安装件（9），后耳后方具有可纵向调节的稳定器（10），所述后耳安装件以可枢转的方式固定到声音再现换能器壳体（3）上，从而使其能够 在几个方向旋转。

公开(公告)号：USD838259S1

公开(公告)日：2019-01-15

申请号：US29602627

申请日：2017-05-02

Applicant: GN Netcom A/S

Designer： Jonas Samrelius

公开(公告)号：US09900687B2

公开(公告)日：2018-02-20

申请号：US15027595

申请日：2013-10-07

Applicant: GN Netcom A/S

Inventor： Michael Sørensen

IPC: H04R3/00 ,  H04R1/10 ,  H04R1/08 ,  A61B5/00 ,  A61B5/024 ,  A61B5/11

CPC classification number: H04R3/00 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/11 ,  A61B5/6803 ,  A61B5/6817 ,  A61B5/6898 ,  A61B5/721 ,  H04R1/08 ,  H04R1/1016 ,  H04R1/1033 ,  H04R1/1041 ,  H04R1/105 ,  H04R1/1058 ,  H04R1/1066 ,  H04R2420/07 ,  H04R2420/09

Abstract: An earphone device (1) to be worn in the ear, which earphone device (1) comprising a main body (18) to be arranged in the concha (19) of the outer ear (14) of a user and an optical sensor (35), which optical sensor (35) comprises a light emitter (16) and a light detector (17). The earphone device (1) comprises window means (8, 9) through which light emitted by the light emitter (16) can be transmitted. The window means (8, 9) comprises an end face (31) adapted to abut a conchal wall (37) at a sensing position (36). The main body (18) comprises a speaker protrusion (26) to be inserted into to ear canal (15). The distance between the speaker protrusion (26) and the end face (31) is adjustable.

公开(公告)号：US09686662B2

公开(公告)日：2017-06-20

申请号：US15181149

申请日：2016-06-13

Applicant: GN Netcom A/S

Inventor： Tomasz Jerzy Goldman ,  Stefan Heise

IPC: H04M3/42 ,  H04W4/16 ,  H04M1/253 ,  H04M1/60 ,  H04M1/725 ,  H04W24/04 ,  H04W76/02

CPC classification number: H04W4/16 ,  H04M1/2535 ,  H04M1/6066 ,  H04M1/7253 ,  H04M2250/02 ,  H04W24/04 ,  H04W76/14 ,  H04W76/18

Abstract: A wireless headset system comprising a first telecommunication device, a second telecommunication device, such as a mobile phone or a smart phone and a wireless headset adapted to be wirelessly connected by a first radio link to the first telecommunication device. The headset system is adapted to transfer a call from the first telecommunication device to the second telecommunication device, when the first wireless link or a second radio link between the first telecommunication device and the second telecommunication device is broken or becomes sufficiently weak. The invention also relates to a method and a headset to be used with such a system.

公开(公告)号：USD787477S1

公开(公告)日：2017-05-23

申请号：US29502297

申请日：2014-09-14

Applicant: GN Netcom A/S

Designer： Chang Ho Lee

公开(公告)号：US09648408B2

公开(公告)日：2017-05-09

申请号：US14972752

申请日：2015-12-17

Applicant: GN Netcom A/S

Inventor： Camilla Korch-Haahr ,  Stig Holbek ,  Peter Ulrik Kann

IPC: H04R1/10

CPC classification number: H04R1/1033 ,  H04R1/105 ,  H04R1/1058 ,  H04R25/60

Abstract: Disclosed is a headset and an ear hook for a headset, the headset comprising a housing portion and a microphone component, the microphone component comprising a microphone boom, the microphone boom comprising a wire, wherein the ear hook comprises: a first end structurally connected to the housing portion; a second end comprising a wire holder configured for detachable retention of the wire from the microphone boom; and where a portion of the ear hook between the first end and the second end is configured for attaching the ear hook to an ear of a user.

公开(公告)号：US09602647B2

公开(公告)日：2017-03-21

申请号：US14799959

申请日：2015-07-15

Applicant: GN Netcom A/S

Inventor： Soeren Arne Joergensen

IPC: H04M3/436 ,  H04M1/60 ,  H04M1/57 ,  H04M1/725 ,  H04M1/253

CPC classification number: H04M1/6066 ,  H04M1/2535 ,  H04M1/57 ,  H04M1/72533 ,  H04M2250/02

Abstract: A hands free communication device (2), such as a headset, adapted to be simultaneously connected to a first telecommunication device (2) and a second telecommunication device (3). The hands free communication device (2) is adapted to send a call status signal to the first telecommunication device (3) upon reception of a corresponding call status signal from the second telecommunication device (4) and to send a call status signal to the second telecommunication device (4) upon reception of a corresponding call status signal from the first telecommunication device (3). The invention also relates to a system implementing such a hands free device (2) and a method using such a system.