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Class Information
Number: 381/311
Name: Electrical audio signal processing systems and devices > Binaural and stereophonic > Stereo speaker arrangement > Stereo earphone > Wireless or for use in diverse
Description: Subject matter in which a) audio signals are conveyed to the earphone without the use of conductors, such as by modulated RF or infrared carrier wave or b) the earphone is especially configured or adapted to be used in an unusual location, such as underwater or within a magnetic field such as Magnetic Resonance Imaging (MRI), etc.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8712072 Multi-wired antenna for mobile apparatus Apr. 29, 2014
8705780 Audio apparatus, audio signal transmission method, and audio system Apr. 22, 2014
8675887 Wireless illuminative speaker system and wireless illuminative speaker thereof Mar. 18, 2014
8654982 Reducing power consumption in sink devices by having sinks receive only left audio channel or right audio channel Feb. 18, 2014
8654988 Synchronization of signals for multiple data sinks Feb. 18, 2014
8644532 Channel coordination between a wireless earphone and a transmitter Feb. 4, 2014
8620013 Communication system and hearing device Dec. 31, 2013
8593573 System, method and apparatus for detecting docking of headphones Nov. 26, 2013
8588433 Electret microphone circuit Nov. 19, 2013
8571611 System and method for wirelessly providing multimedia Oct. 29, 2013
8457334 Audio apparatus, audio signal transmission method, and audio system Jun. 4, 2013
8442438 Wireless transmitter and related multimedia system May. 14, 2013
8380131 Frequency selection system including a wireless microphone and a receiver Feb. 19, 2013
8369548 Wireless headset device capable of providing balanced stereo and method thereof Feb. 5, 2013
8369547 Enclosure for a communication device Feb. 5, 2013
8340313 Wireless digital transmission of low frequency effects and surround channels for surround sound system Dec. 25, 2012
8340330 Audio apparatus for wirelessly transmitting audio signal, audio system, and audio signal transmission method thereof Dec. 25, 2012
8335577 Method of generating advanced audio distribution profile (A2DP) source code and chipset using the same Dec. 18, 2012
8326360 Method and system for the configuration of a mobile station baseband circuit for an acoustic accessory Dec. 4, 2012
8325935 Speaker having a wireless link to communicate with another speaker Dec. 4, 2012
8325930 Signal processing apparatus and control method thereof Dec. 4, 2012
8317615 Display device, game system, and game method Nov. 27, 2012
8315416 Necklace type detachable three dimensional sound reproduction apparatus Nov. 20, 2012
8290185 Method of compensating for audio frequency characteristics and audio/video apparatus using the method Oct. 16, 2012
8290186 Method and apparatus for controlling portable audio device Oct. 16, 2012
8284713 Wireless audio systems and related methods Oct. 9, 2012
8275159 Media playback apparatus having speakers with rotatable connecting means Sep. 25, 2012
8260275 Data transmitting apparatus and method Sep. 4, 2012
8244308 Helmet communication device Aug. 14, 2012
8243967 Hand-held electronic device Aug. 14, 2012
8238570 Personal acoustic device position determination Aug. 7, 2012
8239559 Provisioning and streaming media to wireless speakers from fixed and mobile media sources and clients Aug. 7, 2012
8233648 Ad-hoc adaptive wireless mobile sound system Jul. 31, 2012
8229144 Method and system for switched battery charging and loading in a stereo headset Jul. 24, 2012
8208642 Method and apparatus for a binaural hearing assistance system using monaural audio signals Jun. 26, 2012
8199937 Contents reproduction apparatus and method thereof Jun. 12, 2012
8194878 Dual streaming with exchange of FEC streams by audio sinks Jun. 5, 2012
8180078 Systems and methods employing multiple individual wireless earbuds for a common audio source May. 15, 2012
8175281 Method and apparatus for a binaural hearing assistance system using monaural audio signals May. 8, 2012
8175297 Ad hoc sensor arrays May. 8, 2012
8162757 Multiplayer platform for mobile applications Apr. 24, 2012
8160275 Apparatus and method for an integrated, multi-mode, multi-band, and multi-stage power amplifier Apr. 17, 2012
8160276 Audio system and related method integrated with ultrasound communication functionality Apr. 17, 2012
8155370 Audio system and a method for detecting and adjusting a sound field thereof Apr. 10, 2012
8155335 Headset having wirelessly linked earpieces Apr. 10, 2012
8144892 Audio amplification system Mar. 27, 2012
8126182 Sound effect system and wireless audio output device Feb. 28, 2012
8081786 Speaker clearance arrangement for a communication device Dec. 20, 2011
8068882 Portable media player emulator for facilitating wireless use of an accessory Nov. 29, 2011
8064422 Communication of audio control signals for wireless audio output devices Nov. 22, 2011

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