Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 381/74
Name: Electrical audio signal processing systems and devices > Headphone circuits
Description: Subject matter having means to perform a desired electrical or electronic function in conjunction with a device held against the ear having a diaphragm which vibrates according to current variations.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8712071 Headset electronics Apr. 29, 2014
8712072 Multi-wired antenna for mobile apparatus Apr. 29, 2014
8705761 Entertainment system and earphone Apr. 22, 2014
8705779 Surround sound virtualization apparatus and method Apr. 22, 2014
8706273 Apparatus and method for conveying audio signals from an input locus to an output locus Apr. 22, 2014
8693700 Adaptive feed-forward noise reduction Apr. 8, 2014
8693720 Wireless earplug with improved sensitivity and form factor Apr. 8, 2014
8693703 Method of combining at least two audio signals and a microphone system comprising at least two microphones Apr. 8, 2014
8693702 Headset having remote control for multimedia playback device Apr. 8, 2014
8689931 Ear protector with a sound damping filter, sound damping filter for such an ear protector as well as method for manufacturing a sound damping filter for such an ear protector Apr. 8, 2014
8682003 Equipment with optical paths for noise cancellation signals Mar. 25, 2014
8682010 Automatic environmental acoustics identification Mar. 25, 2014
8675130 Electronic adapter unit for selectively modifying audio or video data for use with an output device Mar. 18, 2014
8675885 Adjusting noise reduction in headphones Mar. 18, 2014
8675897 Ear-muff type headset for two-way communication Mar. 18, 2014
8670571 Frequency control based on device properties Mar. 11, 2014
8666083 Intercom headset connection and disconnection responses Mar. 4, 2014
8660273 Interface circuit and electronic device using the same Feb. 25, 2014
8654987 Audio player headset earhook apparatus and system thereof Feb. 18, 2014
8631327 Balancing loudspeakers for multiple display users Jan. 14, 2014
8625812 Acoustic dampening compensation system Jan. 7, 2014
8625814 Earphone antenna of a portable terminal Jan. 7, 2014
8620004 Electronic device, electronic system, and method for processing signals from an audio accessory thereof Dec. 31, 2013
8612032 Terminal and method for efficient use and identification of peripherals having audio lines Dec. 17, 2013
8611554 Hearing assistance apparatus Dec. 17, 2013
8611564 3.5 mm audio plug with built-in lighting source Dec. 17, 2013
8597061 Earphone plug with switch device Dec. 3, 2013
8600067 Acoustic sealing analysis system Dec. 3, 2013
8594743 Portable terminal, audio output control method, and audio output control program Nov. 26, 2013
8588948 Audio enabled control menu system, method and device Nov. 19, 2013
8582782 Method and device for audio recording Nov. 12, 2013
8577052 Headphone accessory Nov. 5, 2013
8577064 Sound capturing and guiding system from stereo speakers packed together in a closed box and heard as stereo sound coming from various directions Nov. 5, 2013
8577051 Sound signal compensation apparatus and method thereof Nov. 5, 2013
8577046 Apparatus for estimating sound source direction from correlation between spatial transfer functions of sound signals on separate channels Nov. 5, 2013
8571228 Feedforward ANR device acoustics Oct. 29, 2013
8571612 Mobile voice management of devices Oct. 29, 2013
8565444 Detecting stereo and mono headset devices Oct. 22, 2013
8564961 Methods and apparatus for providing holes through portions of a housing of an electronic device Oct. 22, 2013
8558562 Method and circuitry for identifying type of plug connected to a dual-use jack Oct. 15, 2013
8559621 Donned and doffed headset state detection Oct. 15, 2013
8559650 Circuit apparatus and method for detecting earphone in portable terminal Oct. 15, 2013
8559651 Synthetic stereo on a mono headset with motion sensing Oct. 15, 2013
8553900 Noise reduction circuit with monitoring functionality Oct. 8, 2013
8548538 Multi-button control headset for a mobile communication device Oct. 1, 2013
8548175 Method for recognizing ear phone in portable terminal and apparatus thereof Oct. 1, 2013
8542845 Wireless stereo headset Sep. 24, 2013
8538009 Donned and doffed headset state detection Sep. 17, 2013
8532310 Frequency-dependent ANR reference sound compression Sep. 10, 2013
8526629 Audio output apparatus and compensation method thereof Sep. 3, 2013

1 2 3 4 5 6 7 8 9 10 11










 
 
  Recently Added Patents
Indexing, relating and managing information about entities
Family of pain producing substances and methods to produce novel analgesic drugs
Biomarker for Barrett's Oesophagus
Sabatier process and apparatus for controlling exothermic reaction
Methods and systems providing desktop search capability to software application
Native NAD-dependent GAPDH replaced with NADP-dependent GAPDH plus NADK
Stereoscopic editing for video production, post-production and display adaptation
  Randomly Featured Patents
Impervious childrens mat cover
Combined wing and spring shield for a printer media handling system
Dual-cylinder blowout preventer operator system
Gapped oligomers having site specific chiral phosphorothioate internucleoside linkages
Method and apparatus for evolving overlays to operate an extended analog computer as a classifier or a controller
Magnetoresistance element employing Heusler alloy as magnetic layer
Method for modeling an arbitrary well path in a hydrocarbon reservoir using adaptive meshing
High dielectric TiO.sub.2 -SiN composite films for memory applications
Micro mass flow control apparatus and method
Brain-protective agent