| Patents for H03B 29 - Generation of noise currents and voltages (821) |
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| 10/24/2000 | US6137440 Microwave active solid state cold/warm noise source |
| 10/03/2000 | US6127899 High frequency anharmonic oscillator for the generation of broadband deterministic noise |
| 07/05/2000 | EP1016070A2 Sound reduction method and system for jet engines |
| 07/05/2000 | EP1014894A1 Active headset with bridge amplifier |
| 05/16/2000 | US6064257 Chopper-stabilized operational amplifier |
| 05/03/2000 | CN1251981A Sound reduction method and system for jet engines |
| 02/02/2000 | EP0943174A4 Microwave active solid state cold/warm noise source |
| 10/12/1999 | US5966452 Sound reduction method and system for jet engines |
| 09/22/1999 | EP0943174A1 Microwave active solid state cold/warm noise source |
| 07/20/1999 | US5926066 Chopper-stabilized operational amplifier including integrated circuit with true random voltage output |
| 05/26/1999 | CN1217834A Circuit arrangement for generating random bit sequences |
| 04/08/1999 | WO1998039209A9 Sound reduction method and system for jet engines |
| 03/30/1999 | US5889869 Invisible acoustic screen for open-plan offices and the like |
| 03/09/1999 | CA2136950C Active plus selective headset |
| 02/24/1999 | EP0897613A1 Circuit arrangement for generating random bit sequences |
| 02/18/1999 | WO1998039209A3 Sound reduction method and system for jet engines |
| 02/16/1999 | US5872807 Spread spectrum clock generator and associated method |
| 02/02/1999 | US5867524 Spread spectrum clock generator and associated method |
| 01/20/1999 | EP0892499A1 An integrated circuit with two phase-locked loops and with means for preventing locking owing to injection |
| 01/05/1999 | US5857165 Method and apparatus for communication with chaotic and other waveforms |
| 12/16/1998 | EP0643881B1 Active plus selective headset |
| 09/29/1998 | US5815045 Oscillation apparatus |
| 09/15/1998 | CA2118211C Adaptive multifrequency reactive muffler |
| 09/11/1998 | WO1998039209A2 Sound reduction method and system for jet engines |
| 09/11/1998 | CA2282744A1 Sound reduction method and system for jet engines |
| 08/11/1998 | US5793259 Apparatus for generating differential noise between power and ground planes |
| 06/25/1998 | WO1998027644A1 Microwave active solid state cold/warm noise source |
| 06/17/1998 | EP0848493A1 Electronic device for processing wide band signals with frequency transposition |
| 04/21/1998 | US5742208 Signal generator for generating a jitter/wander output |
| 03/11/1998 | EP0828343A1 Signal generator for generating a jitter/wander output |
| 01/07/1998 | EP0721696A4 System for suppressing sound from a flame |
| 12/30/1997 | CA2098028C Low power integrated circuit white noise source |
| 12/25/1997 | CA2179794A1 Invisible acoustic screen for open-plan offices and the like |
| 12/02/1997 | US5694094 Narrow band arbitrary HF modulation and noise generator |
| 11/13/1997 | WO1997042706A1 Circuit arrangement for generating random bit sequences |
| 09/16/1997 | US5668507 Noise generator for evaluating mixed signal integrated circuits |
| 06/05/1997 | DE19618098C1 Random bit sequence generation circuit |
| 06/04/1997 | EP0636207B1 Adaptive multifrequency reactive muffler |
| 05/20/1997 | US5631920 Spread spectrum clock generator |
| 05/06/1997 | US5627775 Method and apparatus for generating random numbers using electrical noise |
| 03/11/1997 | US5610955 Circuit for generating a spread spectrum clock |
| 10/23/1996 | EP0739089A2 Spread spectrum clock generator |
| 10/15/1996 | US5565818 Laser trimmable integrated noise circuit |
| 10/02/1996 | EP0734614A1 Narrow band, arbitrary hf modulation and noise generator |
| 07/18/1996 | DE19500599A1 Non-deterministic generator of truly random numbers e.g. for Monte Carlo simulation, games of chance and cryptography |
| 07/17/1996 | EP0721696A1 System for suppressing sound from a flame |
| 06/12/1996 | CN1124167A Random frequency spectrum therapeutic apparatus |
| 04/16/1996 | US5508647 Noise shaper for preventing noise in low frequency band |
| 04/09/1996 | US5506795 Apparatus and method for generating chaotic signals and chaos device |
| 04/09/1996 | US5506545 Electronic apparatus having low radio frequency interference from controlled excursion noise-modulated system clock signal |
| 01/30/1996 | US5488666 System for suppressing sound from a flame |
| 01/30/1996 | US5488627 Spread spectrum clock generator and associated method |
| 01/11/1996 | WO1996001006A1 Spurious response rejecting mixer using spread spectrum techniques |
| 11/01/1995 | CN2211673Y Random signal generator of frequency spectrum instrument for therapy |
| 07/25/1995 | US5436973 Pseudo-random signal synthesizer with smooth, flat power spectrum |
| 07/11/1995 | US5432697 Technique for controlling the symbolic dynamics of chaotic systems to generate digital communications waveforms |
| 06/22/1995 | WO1995017039A1 Narrow band, arbitrary hf modulation and noise generator |
| 06/20/1995 | US5426392 Spread clock source for reducing electromagnetic interference generated by digital circuits |
| 05/31/1995 | EP0655829A1 Spread spectrum clock generator and associated method |
| 04/13/1995 | WO1995010137A1 System for suppressing sound from a flame |
| 03/28/1995 | US5402334 Method and apparatus for pseudoperiodic drive |
| 03/22/1995 | EP0643881A1 Active plus selective headset |
| 01/03/1995 | US5379346 Cascading synchronized chaotic systems |
| 12/27/1994 | US5377275 Active noise control apparatus |
| 12/08/1994 | WO1994027525A1 Active ear defender |
| 07/19/1994 | US5331217 Low power integrated circuit white noise source |
| 05/18/1994 | EP0597313A1 Road users information transmitting method |
| 12/23/1993 | WO1993026084A1 Active plus selective headset |
| 10/28/1993 | WO1993021428A1 Adaptive multifrequency reactive muffler |
| 09/14/1993 | US5245660 System for producing synchronized signals |
| 09/07/1993 | US5243303 Pseudo-random noise signal generator |
| 08/25/1993 | EP0556819A2 Apparatus and method for generating chaotic signals and chaos device |
| 08/22/1993 | CA2089716A1 Apparatus and method for generating chaotic signals and chaos device |
| 06/29/1993 | US5224165 High speed word generator |
| 02/04/1993 | DE4229047A1 White noise production method for measurement, testing and calibration use - using stop current from Z-diodes or vacuum tube diodes |
| 09/17/1992 | DE4108095A1 Noise generator for radio channel simulator - uses summated weighted outputs of shift register stages to provide Doppler spectrum |
| 09/15/1992 | US5148124 Monolithic microwave integrated circuit noise generator and variable resistance device |
| 08/05/1992 | EP0497618A2 Noise generating device |
| 04/14/1992 | CA1298793C Active noise control |
| 02/06/1991 | EP0258432B1 Multimode noise generator using digital fm |
| 04/10/1990 | US4916411 Variable frequency jitter generator |
| 12/13/1989 | EP0345390A1 Improvement in or Relating to Jitter Circuits |
| 11/21/1989 | US4882551 400 Hertz harmonic generator |
| 06/27/1989 | CA1256516A1 Multimode noise generator using digital fm |
| 06/13/1989 | US4839606 Digital FM demodulator signal-to-noise improvement |
| 02/21/1989 | US4806845 System for measuring and generating electric noise |
| 01/11/1989 | CN2030776U Digital voice gaussian noise generator |
| 09/20/1988 | US4772853 Digital delay FM demodulator with filtered noise dither |
| 11/11/1987 | CN86210043U Solid microwave noise source |
| 09/29/1987 | US4697157 Inherently flat spectral density pseudorandom noise generator |
| 08/27/1987 | WO1987005168A1 Multimode noise generator using digital fm |
| 08/04/1987 | US4684903 Controlled oscillator having random variable frequency |
| 06/16/1987 | US4673871 Digital noise generator |
| 04/14/1987 | US4658222 Radiation detector spectrum simulator |
| 03/11/1987 | EP0213695A2 Digital noise generator |
| 02/24/1987 | US4646032 Controlled oscillator having random variable frequency |
| 02/17/1987 | US4644299 Multimode noise generator using digital FM |
| 10/14/1986 | US4617530 Pseudo-random noise generator |
| 09/23/1986 | US4613831 Audio, ultrasonic and RF noise generator for demonstration of electrical interference |
| 03/25/1986 | US4578649 Random voltage source with substantially uniform distribution |