H03M3/412 - CPC Classification Index

ClassID:

222519 ⎘

H03M3/412 - CPC Classification

Classification description:

Conversion of analogue values to or from differential modulation; Delta-sigma modulation; Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution

Sub-classes:

H03M3/414 » {having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type} 52
H03M3/42 » {having multiple quantisers arranged in parallel loops} 19
H03M3/422 » {having one quantiser only} 140

Recent Application in this class:

20260135568

2026-05-14

Recording module and its sigma-delta modulator (SDM)

20250226837

2025-07-10

METHOD AND APPARATUS FOR STOCHASTIC ANALOG TO DIGITAL CONVERSION

20250030437

2025-01-23

DELTA SIGMA MODULATION CIRCUIT, DIGITAL TRANSMISSION CIRCUIT, AND DIGITAL TRANSMITTER

20240388308

2024-11-21

ANALOG TO DIGITAL CONVERTER WITH VCO-BASED AND PIPELINED QUANTIZERS

20240005471

2024-01-04

Next generation quality inspection

20220368340

2022-11-17

Analog to digital converter with VCO-based and pipelined quantizers

20220329256

2022-10-13

Current to digital converter circuit, optical front end circuit, computed tomography apparatus and method

20220216836

2022-07-07

Increasing power efficiency in a digital feedback class D driver

20220109452

2022-04-07

Delta sigma modulator

#10

20220045694

2022-02-10

System and method to enhance noise performance in a delta sigma converter

#11

20220045692

2022-02-10

System and method to enhance noise performance in a delta sigma converter

#12

20210305996

2021-09-30

Analog to digital converter with VCO-based and pipelined quantizers

#13

20190312584

2019-10-10

Analog-to-digital converter

#14

20190245553

2019-08-08

Sigma delta modulator, integrated circuit and method therefor

#15

20180183459

2018-06-28

Metastability compensation

#16

20180034471

2018-02-01

High-linearity sigma-delta converter

#17

20160248438

2016-08-25

Continuous-time quantization device, radio frequency signal receiver comprising such a device and continuous-time quantization method

#18

20140368366

2014-12-18

Mostly-digital open-loop ring oscillator delta-sigma ADC and methods for conversion

#19

20140333462

2014-11-13

Sigma-delta modulator

#20

20130214952

2013-08-22

Two-stage phase digitizer

#21

20130088376

2013-04-11

Sigma-delta modulator with SAR ADC and truncater and related sigma-delta modulation method

#22

20120112943

2012-05-10

Sigma-delta modulator with SAR ADC and truncater having order lower than order of integrator and related sigma-delta modulation method

#23

20110050475

2011-03-03

Analog to digital converter with digital filter

#24

20110037629

2011-02-17

Coupled delta-sigma modulators

#25

20090278721

2009-11-12

Hybrid delta-sigma ADC

#26

20090096649

2009-04-16

Sigma-delta modulator for PWM applications with minimum dynamical control and dithering

#27

20090009371

2009-01-08

METHOD AND APPARATUS FOR A/D CONVERSION

#28

20080165043

2008-07-10

Method and apparatus for A/D conversion

#29

20080158031

2008-07-03

Pipelined/cyclic architectures for analog-digital signal conversion

#30

20080062026

2008-03-13

Analog-to-digital converter (ADC) having a reduced number of quantizer output levels

#31

20060125668

2006-06-15

System and method for spectral shaping of dither signals

#32

20050093726

2005-05-05

Analog-to-digital conversion system with second order noise shaping and a single amplifier

#33

20050062626

2005-03-24

System and method for spectral shaping of dither signals

#34

20050040981

2005-02-24

Modulation circuit having improved performance in the audio band

#35

20050040980

2005-02-24

System and method for shuffling mapping sequences

#36

20050001749

2005-01-06

Sigma-delta modulation

#37

16407501

2020-09-01

Metastability shaping technique for continuous-time sigma-delta analog-to-digital converters

#38

15941054

2018-11-13

Methods and system of a digital transmitter with reduced quantization noise

#39

15794367

2019-01-15

Reducing residue signals in analog-to-digital converters

#40

15582355

2018-02-27

Digital-to-analog converter and method of operating

#41

15470805

2018-07-10

Systems and methods for fast delta sigma modulation using parallel path feedback loops

#42

15407201

2018-02-20

Multi-stage delta-sigma pipelined successive approximation register analog-to-digital converter

#43

15343674

2017-10-24

Method and apparatus to increase dynamic range in delta-sigma ADC using internal feedback across all integrators in loop-filter

#44

14474945

2016-01-26

Methods and apparatus for offline mismatch removal in sigma delta analog-to-digital converters