Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 21 - Adaptive networks
Patents for H03H 21 - Adaptive networks (3,855)
01/2000
01/27/2000WO2000004698A1 Digital adaptive filter and acoustic echo canceller using the same
01/27/2000DE19831320A1 Digital adaptive filter for communications system, e.g. hands free communications in vehicles, has power estimation unit recursively smoothing increasing and decreasing input power asymmetrically
01/26/2000EP0975125A1 Sequence estimation method and sequence estimator
01/25/2000CA2158186C A hybrid equalizer arrangement for use in data communications equipment
01/25/2000CA2155817C Ds/cdma receiver having an interference cancelling function capable of assuring a desired reception quality in a narrow-band ds/cdma system
01/18/2000CA2170811C Noise cancelling device capable of achieving a reduced convergence time and a reduced residual error after convergence
01/11/2000US6014620 Power spectral density estimation method and apparatus using LPC analysis
01/05/2000EP0969635A2 Blind equalisation in receivers with both CAP and QAM modes
01/05/2000EP0968571A2 Method and arrangement for forming an address
01/04/2000US6011853 Equalization of speech signal in mobile phone
01/04/2000US6011813 Blind equalization method and apparatus having reduced complexity
01/02/2000CA2272246A1 Blind start-up of a dual mode cap-qam receiver
12/1999
12/29/1999EP0967602A1 A temperature/voltage compensation circuit
12/29/1999EP0966793A1 Audio coding method and apparatus
12/29/1999EP0809883B1 Distortion correction device for a path of propagation in transmission systems
12/29/1999EP0655158B1 Method and apparatus for attenuating an unwanted audio signal in a mix of signals
12/28/1999US6009448 Pipelined parallel-serial architecture for a modified least mean square adaptive filter
12/28/1999US6009125 Digital transmission system that can be synchronized with initialization sequences
12/23/1999WO1999066638A1 Adaptive state space signal separation, discrimination and recovery architectures and their adaptations for use in dynamic environments
12/23/1999CA2334861A1 Adaptive state space signal separation, discrimination and recovery architectures and their adaptations for use in dynamic environments
12/15/1999EP0964554A1 Sequence estimation method and sequence estimator
12/14/1999US6002950 Satellite communication apparatus
12/14/1999CA2174342C A variable block size adaptation algorithm for noise-robust acoustic echo cancellation
12/08/1999EP0963041A2 Noise cancelling method and noise cancelling unit
12/08/1999EP0789900B1 Reduction of computational burden of adaptively updating control filter(s) in active systems
12/07/1999US5999956 Separation system for non-stationary sources
12/07/1999US5999954 Low-power digital filtering utilizing adaptive approximate filtering
12/07/1999US5999579 Fading equalizer
12/07/1999US5999567 Method for recovering a source signal from a composite signal and apparatus therefor
12/07/1999CA2128881C Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization
12/02/1999WO1999053615A3 A device and method for reduction of transients
12/02/1999WO1999044286A3 Sharing resources in a digital filter
12/01/1999EP0713625A4 An audio processing system for teleconferencing
11/1999
11/30/1999US5995620 Echo canceller having Kalman filter for optimal adaptation
11/30/1999US5995545 Signal reproducing method and apparatus
11/30/1999US5995544 Adaptive equalization for PRIV transmission systems
11/30/1999US5995493 Transmission of a digital information signal having a specific first sampling frequency
11/25/1999DE19820909A1 Circuit arrangement of data processing device
11/24/1999EP0959596A1 Method and circuit for training an adaptive equalizer
11/24/1999EP0648385B1 Signal processing
11/23/1999US5991334 Technique for simultaneous communications of analog frequency-modulated and digitally modulated signals using postcanceling scheme
11/18/1999WO1999059336A1 Data processing device
11/18/1999WO1999059245A1 Adaptive filter
11/17/1999EP0956650A1 Signal processing apparatus employing the spectral property of the signal
11/17/1999EP0781469B1 Adaptive filter
11/17/1999CN1235457A Adaptive equalizer
11/17/1999CN1235415A Multiported register file for burst mode coefficient updating
11/17/1999CN1235414A Multiported register file for coefficient use in filters
11/16/1999US5987485 Adaptive digital filter
11/16/1999US5987143 Method and apparatus for erasing acoustic echo
11/16/1999US5987065 Adaptive equalizer
11/16/1999CA2196010C Adaptive iir multitone detector
11/15/1999CA2271978A1 Method and circuit for training the tap coeficient of adaptive equalizer
11/11/1999DE19820908A1 Computing least mean square algorithm for adaptive filter
11/10/1999EP0955727A2 Adaptive noise reduction filter with low modulation disabling
11/10/1999CN1234926A Signal processor employing spectral property of signals
11/04/1999DE19818694A1 Correlation methods in electronic circuit
11/02/1999US5978824 Noise canceler
11/02/1999US5978489 Multi-actuator system for active sound and vibration cancellation
11/02/1999US5978473 Gauging convergence of adaptive filters
11/02/1999US5978415 Automatic amplitude equalizer
11/02/1999CA2135695C Active adaptive control system with spectral leak
10/1999
10/28/1999WO1999054996A1 System for varying the dynamic range of coefficients in a digital filter
10/28/1999DE19818609A1 Noise filtering method for handsfree system
10/27/1999EP0951798A1 Acoustic feedback correction
10/26/1999US5974434 Method and apparatus for automatically tuning the parameters of a feedback control system
10/26/1999US5974156 Circuit arrangement for influencing the frequency response of a digital audio signal
10/21/1999WO1999053615A2 A device and method for reduction of transients
10/21/1999WO1999053476A1 Active noise controller
10/20/1999CN1232329A Transmission/reception apparatus and transmission/ reception method
10/19/1999US5970094 Adaptive equalizer employing filter input circuit in a circular structure
10/14/1999WO1999052211A1 Convolutive blind source separation using a multiple decorrelation method
10/13/1999EP0664187B1 Grinding tape and method of manufacturing the same
10/12/1999US5966689 Adaptive filter and filtering method for low bit rate coding
10/12/1999CA2168532C Adaptively controlled filter
10/05/1999US5963929 For estimating a signal process
09/1999
09/21/1999US5956371 Adaptive equalizing filter of reduced electric power consumption for use in communication system
09/15/1999EP0942561A2 Adaptive step size for channel estimation
09/15/1999EP0942538A2 Transmission and reception apparatus and method using frequency sweeping
09/15/1999EP0942525A1 Adaptive joint linearization, equalization and delay alignment for a wide-band power amplifier
09/15/1999CN1228889A System and method for adaptive interference cancelling
09/14/1999US5953431 Acoustic replay device
09/14/1999US5953380 Noise canceling method and apparatus therefor
09/14/1999US5951626 For synthesizing an approximation of a system
09/14/1999CA2106703C Process and filter for determining the transmittance of a filtering circuit designed to convert the pulse response of a filter into a minimal phase response
09/07/1999US5949820 Method for optimizing an equalization and receive filter
09/07/1999CA2158185C Hybrid equalizer arrangement for use in data communications equipment
09/07/1999CA2131535C Method and apparatus of adaptive maximum likelihood sequence estimation using a variable convergence step size
09/02/1999WO1999044286A2 Sharing resources in a digital filter
08/1999
08/31/1999US5946350 Data receiving system using a decision feedback equalizer
08/25/1999EP0938215A2 Adaptive DC-compensation
08/25/1999EP0938214A2 Automatic equalization method and automatic equalizer
08/25/1999EP0649558B1 Transmission system comprising at least a coder
08/25/1999EP0649557B1 Transmission system comprising at least a coder
08/24/1999US5943367 Transmission system using time dependent filter banks
08/17/1999US5940519 Active noise control system and method for on-line feedback path modeling and on-line secondary path modeling
08/17/1999US5940455 Adaptive filter with disabling circuit for fast tap weight convergence
08/17/1999US5940440 Generalized multimodulus technique for blind equalization
08/17/1999CA2200039C Method to resolve phase ambiguities in a phase measurement
08/17/1999CA2138697C System and method for adaptive maximum likelihood sequence estimation
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