GB1450081A - Detecting or processing electrical signals - Google Patents

Detecting or processing electrical signals

Info

Publication number
GB1450081A
GB1450081A GB4429273A GB4429273A GB1450081A GB 1450081 A GB1450081 A GB 1450081A GB 4429273 A GB4429273 A GB 4429273A GB 4429273 A GB4429273 A GB 4429273A GB 1450081 A GB1450081 A GB 1450081A
Authority
GB
United Kingdom
Prior art keywords
data signal
12msec
period
spurious
amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4429273A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of GB1450081A publication Critical patent/GB1450081A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • 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
    • A61B5/307—Input circuits therefor specially adapted for particular uses
    • A61B5/308—Input circuits therefor specially adapted for particular uses for electrocardiography [ECG]
    • 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
    • H03F3/393—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
    • 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
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7217—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise originating from a therapeutic or surgical apparatus, e.g. from a pacemaker
    • 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
    • A61B5/7235—Details of waveform analysis
    • A61B5/7239—Details of waveform analysis using differentiation including higher order derivatives

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Cardiology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electrotherapy Devices (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Noise Elimination (AREA)
GB4429273A 1972-09-20 1973-09-20 Detecting or processing electrical signals Expired GB1450081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2246100A DE2246100C3 (de) 1972-09-20 1972-09-20 Gerät zum Erfassen bzw. Verarbeiten von Meßnutzsignalen

Publications (1)

Publication Number Publication Date
GB1450081A true GB1450081A (en) 1976-09-22

Family

ID=5856829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4429273A Expired GB1450081A (en) 1972-09-20 1973-09-20 Detecting or processing electrical signals

Country Status (5)

Country Link
DE (1) DE2246100C3 (https=)
FR (1) FR2200526B1 (https=)
GB (1) GB1450081A (https=)
NL (1) NL7312380A (https=)
SE (1) SE395772B (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31158E (en) 1976-06-23 1983-02-22 National Research Development Corporation Apparatus for indicating uterine activity in labor
CN114224302A (zh) * 2021-12-22 2022-03-25 上海贝瑞电子科技有限公司 一种多生理参数信号单通道同步采集装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305400A (en) * 1979-10-15 1981-12-15 Squibb Vitatek Inc. Respiration monitoring method and apparatus including cardio-vascular artifact detection
US4331157A (en) * 1980-07-09 1982-05-25 Stimtech, Inc. Mutually noninterfering transcutaneous nerve stimulation and patient monitoring
DE3818455A1 (de) * 1988-05-31 1989-12-14 Philips Patentverwaltung Spitzenspannungsmesser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31158E (en) 1976-06-23 1983-02-22 National Research Development Corporation Apparatus for indicating uterine activity in labor
CN114224302A (zh) * 2021-12-22 2022-03-25 上海贝瑞电子科技有限公司 一种多生理参数信号单通道同步采集装置
CN114224302B (zh) * 2021-12-22 2024-03-15 上海贝瑞电子科技有限公司 一种多生理参数信号单通道同步采集装置

Also Published As

Publication number Publication date
FR2200526A1 (https=) 1974-04-19
SE395772B (sv) 1977-08-22
DE2246100B2 (de) 1978-10-12
NL7312380A (https=) 1974-03-22
DE2246100A1 (de) 1974-03-28
DE2246100C3 (de) 1979-06-07
FR2200526B1 (https=) 1979-04-27

Similar Documents

Publication Publication Date Title
GB8426010D0 (en) Automatic control
US3437834A (en) Circuit for detecting time of occurrence of signals having an amplitude which exceeds a predetermined level
GB1360957A (en) Apparatus for the early detection of arcs
GB1450081A (en) Detecting or processing electrical signals
GB1309828A (en) Electric signal circuits
GB596078A (en) Improvements in or relating to arrangements for demodulating time modulated electricpulses
US3195056A (en) Circuit to eliminate noise pulses in pulse signals
GB1175948A (en) Signal Detector circuit.
GB896854A (en) Improvements in legible character forms for use in combination with reading machines
GB1312935A (en) Suppressing interference in receivers of electrical signals
AU581267B2 (en) Digital signal processing system and method
US3588712A (en) Two level weak signal detecting circuit
GB959153A (en) Improvements in or relating to peak detector circuits
GB1354220A (en) Apparatus
GB1193104A (en) Pulse Amplitude Measurement Technique.
GB1339387A (en) Pulse shaping circuit
GB1186044A (en) Alarm Circuit
GB812638A (en) Improvements in or relating to echo sounders
GB1390510A (en) Circuits adapted to produce output signals of constant slope
GB1469374A (en) Frequency-doubler circuit
JPS5683125A (en) Data extracting circuit
GB1478407A (en) Systems for producing electrical signals
JPS5769202A (en) Signal processing circuit
GB1343142A (en) Automatic frequency control
FR2455449A1 (fr) Procede et dispositif de reconnaissance de complexes d'un signal d'electrocardiogramme

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee