ClassID:

220940

H03H17/0213 - CPC Classification

Classification description:

Networks using digital techniques; Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms Frequency domain filters using Fourier transforms

Sub-classes:
Recent Application in this class:
#1
20250300634
2025-09-25

APPARATUS INCLUDING A DETECTOR

#2
20250165553
2025-05-22

Fractional Resampler

#3
20240380388
2024-11-14

FILTER PROCESSING DEVICE, FILTER PROCESSING METHOD, COMMUNICATION SYSTEM, AND RECORDING MEDIUM

#4
20240323618
2024-09-26

REDUCING COMB FILTERING FOR HEARING DEVICES

#5
20240137010
2024-04-25

DEVICE AND METHOD FOR PROCESSING A DIGITAL SIGNAL

#6
20230333149
2023-10-19

FRACTIONAL FOURIER TRANSFORM-BASED SPECTRUM ANALYZER

#7
20220371152
2022-11-24

FOURIER FILTERING OF SPECTRAL DATA FOR MEASURING LAYER THICKNESS DURING SUBSTRATE PROCESSING

#8
20220368555
2022-11-17

System for detecting an input and controlling at least one downstream device

#9
20220231697
2022-07-21

Infinite impulse response filters with dithering and methods of operation thereof

#10
20220224415
2022-07-14

Wavelength dispersion compensation apparatus, optical receiving apparatus, wavelength dispersion compensation method and computer program

#11
20220224313
2022-07-14

SYSTEM AND METHOD FOR OPTIMIZING SIGNAL PROCESSING AND STORAGE USING FREQUENCY-TIME DOMAIN CONVERSION

#12
20220164563
2022-05-26

Method, apparatus, and computer-readable storage medium for acquiring fingerprint image

#13
20210250017
2021-08-12

Device and method for filtering signal

#14
20210215747
2021-07-15

Fractional Fourier Transform-based spectrum analyzer

#15
20210194464
2021-06-24

FRI SPARSE SAMPLING KERNEL FUNCTION CONSTRUCTION METHOD AND CIRCUIT

#16
20210117498
2021-04-22

Method for filtering with reduced latency and associated devices

#17
20210091752
2021-03-25

Resource conserving weighted overlap-add channelizer

#18
20210089610
2021-03-25

Memory device and method

#19
20210044280
2021-02-11

Transmitter module, receiver module and data transmission system

#20
20200274524
2020-08-27

Resource conserving weighted overlap-add channelizer

#21
20200220526
2020-07-09

Using a multi-tone signal to tune a multi-stage low-noise amplifier

#22
20200220525
2020-07-09

Method For Automatic Detection of Physical Modes In A Modal Analysis Model

#23
20200162098
2020-05-21

Infinite impulse response filters with dithering and methods of operation thereof

#24
20190294491
2019-09-26

Interference suppression using repeated reduced rank adaptive filtering in Fractional Fourier Transform (FrFT) domains

#25
20190229708
2019-07-25

Fractional scaling digital signal processing

#26
20190158132
2019-05-23

Radio communication receiver and method for configuring a notch filter of the radio communication receiver

#27
20190129913
2019-05-02

Digital filter device, digital filtering method, and program recording medium

#28
20190123704
2019-04-25

Audio processor and audio processing method

#29
20190079825
2019-03-14

Interference suppression using repeated reduced rank adaptive filtering in fractional fourier transform (FrFT) domains

#30
20180287590
2018-10-04

Estimation of harmonic frequencies for hearing implant sound coding using active contour models

#31
20180278154
2018-09-27

SWITCHING POWER SUPPLY APPARATUS, DRIVING METHOD FOR SWITCHING POWER SUPPLY, AND DRIVING PROGRAM FOR SWITCHING POWER SUPPLY

#32
20180268794
2018-09-20

Signal processing apparatus

#33
20180175830
2018-06-21

Data processor, data processing method and communication device

#34
20180152173
2018-05-31

Apparatus for modifying a sampling rate system including an apparatus for modifying a sampling rate and method for modifying a sampling rate

#35
20180121387
2018-05-03

SYSTEM, METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR CALCULATING A SAMPLED SIGNAL

#36
20180100761
2018-04-12

Monitoring an asset using görtzel filters

#37
20180070177
2018-03-08

Phase control signal generation device, phase control signal generation method, and phase control signal generation program

#38
20180067898
2018-03-08

DEVICE AND METHOD FOR HANDLING SYMBOL RATE ESTIMATION AND INTERFERENCE

#39
20180026607
2018-01-25

Method for the non-linear estimation of a mixture of signals

#40
20180013409
2018-01-11

Digital filter circuit, signal processing device, and digital filter processing method

#41
20170317663
2017-11-02

Signal processing method and apparatus

#42
20170269192
2017-09-21

Method for filtering a numerical input signal and associated filter

#43
20170194941
2017-07-06

Modified digital filtering with sample zoning

#44
20170163246
2017-06-08

Fractional scaling digital signal processing

#45
20160357705
2016-12-08

Digital filter device, digital filter processing method, and storage medium having digital filter program stored thereon

#46
20160344372
2016-11-24

Method for equalising distorted signals and an associated equalisation filter

#47
20160232918
2016-08-11

Reduced-delay subband signal processing system and method

#48
20160203104
2016-07-14

Digital processing apparatus and digital processing method

#49
20160140083
2016-05-19

Digital filter device, digital filtering method, and storage medium having digital filter program stored thereon

#50
20160134985
2016-05-12

Propagation delay correction apparatus and propagation delay correction method

#51
20150363360
2015-12-17

Fast Fourier transform device, fast Fourier transform method, and recording medium storing fast Fourier transform program

#52
20150363359
2015-12-17

Butterfly channelizer

#53
20150333783
2015-11-19

Digital signal processing device, receiving device, and signal transmitting and receiving system

#54
20150063541
2015-03-05

X-ray image processing apparatus, X-ray diagnostic apparatus, and X-ray image processing method

#55
20150019608
2015-01-15

Digital filter circuit, digital filter processing method and digital filter processing program storage medium

#56
20140379771
2014-12-25

Digital filter circuit and digital filter processing method

#57
20140335811
2014-11-13

Computing filtered signal as mid-value between first and second variables

#58
20140108479
2014-04-17

Computationally efficient finite impulse response comb filtering

#59
20140105338
2014-04-17

Low-delay filtering

#60
20140105269
2014-04-17

FIR filter using unclocked delay elements

#61
20130262545
2013-10-03

Digital filter circuit and digital filter control method

#62
20120250589
2012-10-04

Time domain signal generation

#63
20120224661
2012-09-06

Digital Equalization Process and Mechanism

#64
20120051406
2012-03-01

Circuit and method for computing circular convolution in streaming mode

#65
20110053546
2011-03-03

Optimal narrowband interference removal for signals separated in time

#66
20100325184
2010-12-23

DIGITAL SIGNAL PROCESSING APPARATUS AND DIGITAL SIGNAL PROCESSING METHOD

#67
20100293214
2010-11-18

Method and system for finite impulse response (FIR) digital filtering

#68
20100262427
2010-10-14

Low complexity spectral band replication (SBR) filterbanks

#69
20100235419
2010-09-16

Filtering apparatus, filtering method, program, and surround processor

#70
20100121610
2010-05-13

Digital filtering system, method, and recording medium thereof

#71
20080155001
2008-06-26

Method for efficient and zero latency filtering in a long impulse response system

#72
20080126461
2008-05-29

Signal processing system employing time and frequency domain partitioning

#73
20080104157
2008-05-01

Efficient implementation of filters for MIMO fading

#74
20070258526
2007-11-08

Apparatus and method for base band filtering

#75
20070005830
2007-01-04

Systems and methods for weighted overlap and add processing

#76
20060195502
2006-08-31

Group delay compensation using IFFT filters

#77
20060193371
2006-08-31

Synchronization And Channel Estimation With Sub-Nyquist Sampling In Ultra-Wideband Communication Systems

#78
20060182290
2006-08-17

Audio quality adjustment device

#79
20050276335
2005-12-15

Generalized polyphase channelization system

#80
20050251542
2005-11-10

Programmable engine core for executing digital signal processing functions

#81
20050203730
2005-09-15

Weight function generating method, reference signal generating method, transmission signal generating apparatus, signal processing apparatus and antenna

#82
20050118970
2005-06-02

Method of measuring and calibrating frequency down converter

#83
20050069064
2005-03-31

Digital equalization process and mechanism

#84
16001539
2019-09-03

Techniques and methods of spot noise generation utilizing a polyphase synthesizer