Voltage control device for ear microphone

• US 9,628,904 B2
• Filed: 07/01/2015
• Issued: 04/18/2017
• Est. Priority Date: 01/28/2011
• Status: Active Grant

• Current Assignee: Haebora Co., Ltd.
• Original Assignee: Haebora Co., Ltd.
• Inventors: Shin, Doo Sik
• Primary Examiner(s): Sniezek, Andrew L
• Application Number:
  US14/788,807
• Publication Number:
  US 20150350759A1
• Time in Patent Office: 657 Days
• CPC Class Codes: H04M 1/6058 involving the use of a headset accessory device connected to the portable telephone
• CPC Class Codes: H04M 9/082 using echo cancellers echo cancellers per se H04B3/23
• CPC Class Codes: H04R 1/02 Casings; Cabinets ; Supports therefor; Mountings therein H04R1/28 takes precedence ; attachments for microphones H04R1/08; mounting of transducers in earpieces H04R1/1075
• CPC Class Codes: H04R 1/08 Mouthpieces; Microphones; Attachments therefor
• CPC Class Codes: H04R 1/10 Earpieces; Attachments therefor ; Earphones; Monophonic headphones H04R1/28 takes precedence; stereophonic headphones H04R5/033
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 1/1058 Manufacture or assembly
• CPC Class Codes: H04R 1/1083 Reduction of ambient noise active noise reduction per se G10K11/175; protective devices for the ear, e.g. providing acoustic protection A61F11/06
• CPC Class Codes: H04R 1/2876 by means of damping material, e.g. as cladding damping material for tuning desired resonances H04R1/2807, e.g. in vents H04R1/2823, H04R1/2846
• CPC Class Codes: H04R 19/04 Microphones H04R19/01 takes precedence
• CPC Class Codes: H04R 2201/107 Monophonic and stereophonic headphones with microphone for two-way hands free communication
• CPC Class Codes: H04R 2410/03 Reduction of intrinsic noise in microphones
• CPC Class Codes: H04R 3/00 Circuits for transducers , loudspeakers or microphones
• CPC Class Codes: H04R 3/02 for preventing acoustic reaction , i.e. acoustic oscillatory feedback specially adapted for hearing aids H04R25/453

Abstract

Disclosed is a voltage control device including a voltage detector detecting an output voltage output from an output port of a mobile communication device; and a voltage control circuit bypassing the output voltage to an earpiece in which a speaker and a microphone are integrally formed when the output voltage detected by the voltage detector is between a first voltage and a second voltage higher than the first voltage.

Claims

1. A voltage control device for a wired ear microphone in which a speaker and a microphone are integrally formed, the voltage control device comprising:

an input connector electrically connected to an output port of a mobile communication device;

an output connector electrically connected to an input port of the wired ear microphone;

a voltage detector detecting an output voltage output from the output port of the mobile communication device; and

a voltage control circuit configured to;

amplify the output voltage to a voltage between a first voltage and a second voltage higher than the first voltage and supply the amplified voltage to the speaker when the detected output voltage is lower than the first voltage, and

attenuate the output voltage to a voltage between the first voltage and the second voltage and supply the attenuated voltage to the speaker when the detected output voltage is higher than the second voltage.

2. The voltage control device for wired ear microphone of claim 1, wherein the voltage control circuit supplies the output voltage to the speaker when the output voltage detected by the voltage detector is between the first voltage and the second voltage.

3. The voltage control device for wired ear microphone of claim 1, wherein the voltage detector generates a control code based on a level of the detected output voltage, and

the voltage control circuit amplifies or attenuates the output voltage based on the control code.