All in one acoustic wireless headphones

• US 20050238180A1
• Filed: 04/27/2004
• Published: 10/27/2005
• Est. Priority Date: 04/27/2004
• Status: Abandoned Application

• Current Assignee: Jinsuan Chen
• Original Assignee: Jinsuan Chen
• Inventors: Chen, Jinsuan
• Application Number:
  US10/832,317
• Publication Number:
  US 20050238180A1
• Time in Patent Office: Days
• US Class Current: 381/71.600
• CPC Class Codes: A61F 11/145 electric, e.g. for active noise reduction
• CPC Class Codes: G10K 11/17821 characterised by the analysis of the input signals only
• CPC Class Codes: G10K 11/1783 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
• CPC Class Codes: G10K 11/17873 using a reference signal without an error signal, e.g. pure feedforward
• CPC Class Codes: G10K 11/17885 additionally using a desired external signal, e.g. pass-through audio such as music or speech
• CPC Class Codes: G10K 2210/1081 Earphones, e.g. for telephones, ear protectors or headsets
• CPC Class Codes: G10K 2210/3039 Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain

Abstract

A noise reduction headphone set has been described. The headphone set includes a first circuit system being an anti-noise circuit comprising a microphone for detecting external noise, and means for admitting a wave opposite phase to that of said noise, right and left speakers coupled to said first circuit and variable control means for manually controlling the output of said speakers; an infrared transmitter and a radio circuit system coupled to said transmitter for transmitting an external audio signal switchably coupled to said first circuit whereby signals generated by said first and second circuits cancel external noise, selectively; and power auto/off control circuit coupled to said first and second circuits for shutting down said system in the absence of an audio signal for a predetermined period of time.

Claims

1. A wireless infrared signal producing headphone device with anti-noise headphone device for transmitting either an anti-noise signal, or a combined anti-noise, infrared signal to earphone speakers comprising:

an infrared transmitter and an infrared receiver therefore, said receiver coupled to first, second, and third circuits;

said first circuit being an anti-noise circuit comprising a microphone for detecting noise, phase detection circuit coupled to said microphone and to each speaker, and means for producing a second wave of opposite phase to said noise, coupled to said speaker;

volume control means coupled to said first circuit for manually controlling the volume of said second wave;

said second circuit comprising an infrared signal receiver and means for transmitting said signal from said receiver to said speakers;

second volume control means coupled between said receiver and speakers for controlling the volume of said signal transmitted;

said third circuit comprising power control means coupled between said infrared transmitter and said speakers for shutting off the power to said transmitter when a signal is not transmitted over a predetermined period of time; and

manual first and second switch means in, respectively, said first and second circuits, whereby control of said first and second switch means will permit either transmission of said infrared signal to said speakers with noise reduction, or transmission of the noise reduction signal only to said speakers.

2. The system of claim 1 wherein a first switch is coupled to said first circuit and a second switch is coupled to said second circuit, so that when both switches are closed, both circuits are operable to transmit a noise free signal, and when only said second switch is open, only the noise reduction signal will be transmitted.

3. The device of claim 1 further comprising an audio cable source selectively coupled to said second circuit whereby said circuit can receive an audio signal either from said infrared transmitter, or from said cable source.