IN2014CH00400A - - Google Patents
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- Publication number
- IN2014CH00400A IN2014CH00400A IN400CH2014A IN2014CH00400A IN 2014CH00400 A IN2014CH00400 A IN 2014CH00400A IN 400CH2014 A IN400CH2014 A IN 400CH2014A IN 2014CH00400 A IN2014CH00400 A IN 2014CH00400A
- Authority
- IN
- India
- Prior art keywords
- chopping
- signals
- level
- frequency
- signal
- Prior art date
Links
- 230000003321 amplification Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
- H03F3/387—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Physics & Mathematics (AREA)
- Public Health (AREA)
- Pathology (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physiology (AREA)
- Psychiatry (AREA)
- Analogue/Digital Conversion (AREA)
- Amplifiers (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention discloses a method and system for processing a plurality of signals together in a single circuitry using a multi-frequency chopping. The system is configured to include a first level chopping, an amplifier for amplification, a second level chopping, a filter for filtration and an Analog to Digital Converter (ADC). The system is further configured to receive low frequency input signals and apply the first level of chopping by translating signals to a higher frequency. Further, the system is configured to amplify the signals and apply the second level of chopping to translate the signal back to original frequency. During second level of chopping, signals are translated to new frequencies other than their baseband by chopping each signal at a different frequency. Further, the signals are combined into a single signal and send to an Analog-to-Digital Converter (ADC) for digitizing. FIG. 1
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN400CH2014 IN2014CH00400A (en) | 2014-01-29 | 2015-01-29 | |
| PCT/IN2015/000058 WO2015114667A2 (en) | 2014-01-29 | 2015-01-29 | Signal acquisition using a multi-frequency chopping in a single circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN400CH2014 IN2014CH00400A (en) | 2014-01-29 | 2015-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN2014CH00400A true IN2014CH00400A (en) | 2015-08-07 |
Family
ID=53757867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN400CH2014 IN2014CH00400A (en) | 2014-01-29 | 2015-01-29 |
Country Status (2)
| Country | Link |
|---|---|
| IN (1) | IN2014CH00400A (en) |
| WO (1) | WO2015114667A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827249B (en) * | 2021-09-28 | 2022-03-01 | 之江实验室 | Method for eliminating multichannel gain error of electroencephalogram signal acquisition system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7170338B1 (en) * | 2005-03-24 | 2007-01-30 | Cirrus Logic, Inc. | Chopper stabilization circuits and methods |
| US8471744B1 (en) * | 2011-12-01 | 2013-06-25 | Hong Kong Applied Science & Technology Research Institute Company, Ltd. | Reduced residual offset sigma delta analog-to-digital converter (ADC) with chopper timing at end of integrating phase before trailing edge |
-
2015
- 2015-01-29 WO PCT/IN2015/000058 patent/WO2015114667A2/en not_active Ceased
- 2015-01-29 IN IN400CH2014 patent/IN2014CH00400A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015114667A2 (en) | 2015-08-06 |
| WO2015114667A3 (en) | 2015-11-05 |
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