Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 17 - Networks using digital techniques
Patents for H03H 17 - Networks using digital techniques (9,654)
11/1998
11/17/1998US5838725 Floating point digital transversal filter
11/17/1998US5838598 Method and apparatus for gain correction of a sigma-delta converter
11/17/1998US5838270 Second order and cascaded 2-1 oversampled modulators with improved dynamic range
11/17/1998US5838173 Device and method for detecting a low voltage in a system
11/17/1998CA2133236C Method and apparatus for channel equalization
11/12/1998DE19800921A1 Data interpolation filter in form of wave filter
11/11/1998EP0877517A2 Output interface for a digital communication system
11/11/1998EP0877514A2 Matched filter
11/11/1998EP0877483A2 High speed interpolation filter and a method thereof
11/10/1998US5835895 Audio signal processing system
11/10/1998US5835531 Signal equalizer
11/10/1998US5835390 Merged multi-stage comb filter with reduced operational requirements
11/10/1998US5835160 Sampling rate conversion using digital differential analyzers
11/10/1998US5835043 Signal processing apparatus, signal recording apparatus, and signal reproducing apparatus
11/10/1998US5835032 To convert a sampling frequency of an input signal into sampling frequency
11/05/1998WO1998049775A1 Apparatus and method for a low power digital filter bank
11/04/1998EP0875992A2 Digital filter with long impulse response
11/03/1998US5832426 High efficiency audio encoding method and apparatus
11/03/1998US5831880 Method for processing a signal in a CSD filter and a circuit therefor
11/03/1998US5831879 Digital transmit filter
11/03/1998US5831565 Signal processing apparatus for converting multi-bit signal having sub-data added thereto into one-bit signal
11/03/1998US5831488 Digital phase modulator formed with a fixed-point digital signal processor
11/03/1998CA2118227C Coordinated coding for digital transmission
10/1998
10/30/1998CA2233771A1 Digital filter with long impulse response
10/28/1998EP0874514A2 Method and apparatus for cancelling multi-channel echo
10/28/1998EP0874499A2 Analog-to-digital converter for digital receiver
10/28/1998EP0874491A2 Signal processing apparatus and method
10/28/1998EP0874466A2 Reed-Solomon decoding circuit and method
10/28/1998EP0874458A2 Coding with data reduction of time variable signals with filter banks
10/28/1998EP0815707B1 Signal quality determining device and method
10/27/1998US5828657 Half-duplex echo canceler training using a pilot signal
10/22/1998WO1998047313A2 Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signals in hearing aids
10/22/1998WO1998047227A1 Dual-processing interference cancelling system and method
10/22/1998CA2286982A1 Dual-processing interference cancelling system and method
10/21/1998EP0872955A2 Look-ahead LMS technique
10/20/1998US5825899 Audio data processing apparatus
10/20/1998US5825828 Method and apparatus for multi-level quadrature amplitude modulation
10/20/1998US5825809 Digital filter having an energy level detector for selecting a coefficient
10/20/1998US5825753 Data communications equipment apparatus
10/20/1998US5823964 Ultrasound doppler wall filter
10/15/1998WO1998045960A1 Multiple-rate direct sequence architecture utilizing a fixed chipping rate and variable spreading code lengths
10/14/1998EP0871305A2 Timing phase control apparatus and timing phase control method
10/14/1998EP0870366A1 Resolution enhancement of fixed point digital filters
10/14/1998EP0870364A2 Sample rate conversion
10/14/1998CN1195823A Interpolator using plurality of polynomial equations and associated methods
10/13/1998US5822775 Efficient data processing method for coefficient data in a digital dignal, processor
10/13/1998US5822368 Method for use in a receiver
10/13/1998US5822325 Method for use with a repeater for use in a local area network
10/13/1998US5821884 Sampling rate conversion method and apparatus utilizing an area effect correlation method
10/13/1998US5821533 Automatic pulse top optimization circuit for an ionizing radiation spectroscopy system
10/08/1998WO1998044629A1 Fractional delay digital filter
10/08/1998DE19713425A1 Signal processing system especially for radiotelephone
10/07/1998EP0868702A1 Deconvolution method for the analysis of data resulting from analytical separation processes
10/07/1998EP0807307A4 A pitch post-filter
10/07/1998CN1195235A Signal processors
10/06/1998US5818888 Sample rate converter
10/06/1998US5818741 Digital filtering system for signals
10/06/1998US5818375 Digital-to-analog converter
10/06/1998US5818370 Integrated CODEC with a self-calibrating ADC and DAC
10/01/1998WO1998043369A1 Combined parallel adaptive equalizer/echo canceller
10/01/1998WO1998043349A2 Receiver with a simplified sample rate converter
10/01/1998WO1998043237A1 Recognition system
10/01/1998WO1998025343A3 Floating point digital transversal filter
10/01/1998CA2284484A1 Recognition system
09/1998
09/30/1998EP0815705B1 Signal quality determining device and method
09/29/1998US5815537 Wireless digital communication device, and a pulse shaping network
09/29/1998US5815533 Receive processor device for use in a digital mobile radio systems
09/29/1998US5815419 Data interpolating circuit
09/24/1998WO1998042082A2 Method and arrangement for forming an address
09/23/1998EP0866554A2 Signal processors
09/23/1998EP0865682A1 Use of single channel fir filter architecture to perform combined/parallel filtering of multiple (quadrature) signals
09/23/1998EP0716785B1 An improved rom filter
09/22/1998US5812979 Synthesis filter for MPEG-2 audio decoder
09/22/1998US5812970 Method based on pitch-strength for reducing noise in predetermined subbands of a speech signal
09/22/1998US5812677 Acoustic signal processing method and apparatus
09/22/1998US5812611 Frequency estimating circuit and AFC circuit using the same
09/22/1998US5812608 Method and circuit arrangement for processing received signal
09/22/1998US5812537 Echo canceling method and apparatus for data over cellular
09/22/1998CA2103147C Process for finding the overall monitoring threshold during a bit-rate-reducing source coding
09/16/1998EP0865158A2 Sampling frequency conversion apparatus and fractional frequency dividing apparatus for sampling frequency conversion
09/16/1998EP0865025A1 Apparatus having loudspeakers concurrently producing both music and reflected sound
09/16/1998EP0864216A1 Filtering in a receiver that uses log-polar signal processing
09/16/1998EP0864206A1 Method and non-linear filter for reducing co-channel interference
09/15/1998US5809074 Technique for improving the blind convergence of an adaptive equalizer using a transition algorithm
09/15/1998US5808924 First-order apparatus adapted to decimate input signal at input signal rate
09/11/1998WO1998039946A1 Device and method for processing speech
09/09/1998EP0863666A2 Multi-dimensional video filters
09/09/1998CN1192609A Re-sampling circuit and associated method
09/08/1998US5805481 Update block for an adaptive equalizer filter configuration capable of processing complex-valued coefficient signals
09/08/1998US5805479 Apparatus and method for filtering digital signals
09/03/1998WO1998038766A1 Sample rate converter
09/03/1998WO1998038582A1 Adaptive dual filter echo cancellation
09/03/1998WO1998026610A3 Hybrid instruction set for versatile digital signal processing system
09/03/1998DE19737639A1 Digital filter of recursive structure with feedback path
09/02/1998EP0861522A2 Method and apparatus for producing a deterministic sequence from an iir filter
09/01/1998US5802186 Audio signal processing apparatus
09/01/1998CA2145077C Sampled-data filter with low delay
08/1998
08/27/1998WO1998037542A1 Accelerated convolution noise elimination
08/27/1998DE3440843C1 Signal to noise ratio improvement unit separating wanted signal from noisy detector signal
08/27/1998CA2278231A1 Accelerated convolution noise elimination
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