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Class Information
Number: 381/79
Name: Electrical audio signal processing systems and devices > One-way audio signal program distribution > Near field
Description: Subject matter which is a near field or limited range system (i.e., field strength 1/d where d = distance from the transmitter to the receiver) where signal transfer from transmitter to receiver is inductive or capacitive rather wired.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7599177 |
Video dock for portable media player |
Oct. 6, 2009 |
| 7599705 |
Wireless transmitter and hearing system |
Oct. 6, 2009 |
| 7596228 |
Parametric array modulation and processing method |
Sep. 29, 2009 |
| 7587053 |
Audio-based position tracking |
Sep. 8, 2009 |
| 7577261 |
Wireless audio system using wireless local area network |
Aug. 18, 2009 |
| 7424118 |
Moving object equipped with ultra-directional speaker |
Sep. 9, 2008 |
| 7418106 |
Apparatus and methods for increasing magnetic field in an audio device |
Aug. 26, 2008 |
| 7395090 |
Personal portable integrator for music player and mobile phone |
Jul. 1, 2008 |
| 7343017 |
System for playback of pre-encoded signals through a parametric loudspeaker system |
Mar. 11, 2008 |
| 7319763 |
Power amplification for parametric loudspeakers |
Jan. 15, 2008 |
| 7313242 |
Hypersonic transducer |
Dec. 25, 2007 |
| 7298853 |
Parametric virtual speaker and surround-sound system |
Nov. 20, 2007 |
| 7197148 |
System for controlling remote speakers using centralized amplifiers, centralized monitoring and master/slave communication protocol |
Mar. 27, 2007 |
| 7181024 |
Portable audio listening apparatus |
Feb. 20, 2007 |
| 7181023 |
Distributed stereo system |
Feb. 20, 2007 |
| 7170396 |
Addressable smart speaker |
Jan. 30, 2007 |
| 7162042 |
Modulator processing for a parametric speaker system |
Jan. 9, 2007 |
| 7146011 |
Steering of directional sound beams |
Dec. 5, 2006 |
| 7130430 |
Phased array sound system |
Oct. 31, 2006 |
| 7110552 |
Personal listening device for arena events |
Sep. 19, 2006 |
| 7099483 |
Sound control system, sound control device, electronic device, and method for controlling sound |
Aug. 29, 2006 |
| 7096169 |
Virtual speaker demonstration system and virtual noise simulation |
Aug. 22, 2006 |
| 7092531 |
Sound output apparatus for an automotive vehicle |
Aug. 15, 2006 |
| 7082203 |
Wireless audio transmission method and apparatus for coupling audio players to audio receivers |
Jul. 25, 2006 |
| 7024003 |
Wireless speaker system suitable for hard-wired audio system |
Apr. 4, 2006 |
| 6987992 |
Multiple wireless microphone speakerphone system and method |
Jan. 17, 2006 |
| 6985592 |
Multipurpose earphone set |
Jan. 10, 2006 |
| 6937718 |
Method and apparatus for personalized conference and hands-free telephony using audio beaming |
Aug. 30, 2005 |
| 6859417 |
Range finding audio system |
Feb. 22, 2005 |
| 6754354 |
Audio system and audio interface |
Jun. 22, 2004 |
| 6741708 |
Acoustic system comprised of components connected by wireless |
May. 25, 2004 |
| 6731761 |
Wireless remote speakers for an automotive vehicle |
May. 4, 2004 |
| RE38405 |
Enhanced concert audio system |
Jan. 27, 2004 |
| 6658274 |
Cellular phone voice interface structure |
Dec. 2, 2003 |
| 6628789 |
Talking toilet paper holder |
Sep. 30, 2003 |
| 6594370 |
Wireless personal communication apparatus in the form of a necklace |
Jul. 15, 2003 |
| 6590982 |
Wireless stereo center speaker system |
Jul. 8, 2003 |
| 6577738 |
Parametric virtual speaker and surround-sound system |
Jun. 10, 2003 |
| 6275593 |
Apparatus and methods for the harmonic enhancement of electronic audio signals |
Aug. 14, 2001 |
| 6229899 |
Method and device for developing a virtual speaker distant from the sound source |
May. 8, 2001 |
| 6208740 |
Stereophonic magnetic induction sound system |
Mar. 27, 2001 |
| 5970390 |
Transmitter and automobile audio apparatus using the same |
Oct. 19, 1999 |
| 5889870 |
Acoustic heterodyne device and method |
Mar. 30, 1999 |
| 5864626 |
Multi-speaker storytelling system |
Jan. 26, 1999 |
| 5862235 |
Multiple broadcast channel transmitter arrangment |
Jan. 19, 1999 |
| 5854844 |
Commentary systems |
Dec. 29, 1998 |
| 5835610 |
Hearing air system |
Nov. 10, 1998 |
| 5822440 |
Enhanced concert audio process utilizing a synchronized headgear system |
Oct. 13, 1998 |
| 5818328 |
Method and system for providing improved wireless audio transmission |
Oct. 6, 1998 |
| 5818949 |
Microphone with infared on/off switch |
Oct. 6, 1998 |
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