SE8802974L - PROCEDURE FOR DIFFERENTIAL SAMPLING - Google Patents

PROCEDURE FOR DIFFERENTIAL SAMPLING

Info

Publication number
SE8802974L
SE8802974L SE8802974A SE8802974A SE8802974L SE 8802974 L SE8802974 L SE 8802974L SE 8802974 A SE8802974 A SE 8802974A SE 8802974 A SE8802974 A SE 8802974A SE 8802974 L SE8802974 L SE 8802974L
Authority
SE
Sweden
Prior art keywords
signal
sampling
present
vmax
dynamics
Prior art date
Application number
SE8802974A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8802974D0 (en
SE461935B (en
Inventor
Henrik Almstroem
Original Assignee
Henrik Almstroem
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 Henrik Almstroem filed Critical Henrik Almstroem
Priority to SE8802974A priority Critical patent/SE461935B/en
Publication of SE8802974D0 publication Critical patent/SE8802974D0/en
Priority to PCT/SE1990/000079 priority patent/WO1991012533A1/en
Publication of SE8802974L publication Critical patent/SE8802974L/en
Publication of SE461935B publication Critical patent/SE461935B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/34—Circuits for representing a single waveform by sampling, e.g. for very high frequencies
    • G01R13/345—Circuits for representing a single waveform by sampling, e.g. for very high frequencies for displaying sampled signals by using digital processors by intermediate A.D. and D.A. convertors (control circuits for CRT indicators)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

The present invention concerns a method for differential sampling with a fixed sampling frequency fo. When sampling a signal varying between +Vmax and -Vmax, the dynamics of the sampled signal is large close to the ends of the interval but it is small close to zero. The present invention, however, gives a solution to the problem of measuring the fine structure of a signal, with constant resolution over a large amplitude interval. This is done by measuring an analogous signal and on every sampling occasion directly sampling the signal V and forming the difference, Vdiff, between the signal on this sampling occasion and the preceding. The difference is then amplified in order to increase the dynamics in the following sampling and the present signal value is reconstructed from the direct value V of the signal at a starting point, the initial value, and the sum up to the present time of the following differential values Udiff, (6), divided by their amplifications.
SE8802974A 1988-08-25 1988-08-25 PROCEDURE FOR DIFFERENTIAL SAMPLING SE461935B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8802974A SE461935B (en) 1988-08-25 1988-08-25 PROCEDURE FOR DIFFERENTIAL SAMPLING
PCT/SE1990/000079 WO1991012533A1 (en) 1988-08-25 1990-02-07 A method for differential sampling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802974A SE461935B (en) 1988-08-25 1988-08-25 PROCEDURE FOR DIFFERENTIAL SAMPLING

Publications (3)

Publication Number Publication Date
SE8802974D0 SE8802974D0 (en) 1988-08-25
SE8802974L true SE8802974L (en) 1990-02-26
SE461935B SE461935B (en) 1990-04-09

Family

ID=20373123

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802974A SE461935B (en) 1988-08-25 1988-08-25 PROCEDURE FOR DIFFERENTIAL SAMPLING

Country Status (2)

Country Link
SE (1) SE461935B (en)
WO (1) WO1991012533A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1073909B1 (en) * 1998-03-31 2004-08-25 Siemens Aktiengesellschaft Method and configuration for processing at least one analog signal comprising several frequency ranges

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284107B (en) * 1966-10-18 1968-11-28 Daimler Benz Ag A converter that can be connected upstream for an amplitude analyzer

Also Published As

Publication number Publication date
SE8802974D0 (en) 1988-08-25
WO1991012533A1 (en) 1991-08-22
SE461935B (en) 1990-04-09

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