EP2183604A1 - Procédé et dispositif d'affichage de lignes entre des valeurs mesurées détectées - Google Patents

Procédé et dispositif d'affichage de lignes entre des valeurs mesurées détectées

Info

Publication number
EP2183604A1
EP2183604A1 EP08759242A EP08759242A EP2183604A1 EP 2183604 A1 EP2183604 A1 EP 2183604A1 EP 08759242 A EP08759242 A EP 08759242A EP 08759242 A EP08759242 A EP 08759242A EP 2183604 A1 EP2183604 A1 EP 2183604A1
Authority
EP
European Patent Office
Prior art keywords
pixel
measuring
points
continuous
point
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.)
Ceased
Application number
EP08759242A
Other languages
German (de)
English (en)
Inventor
Michael Reinhold
Markus Freidhof
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Publication of EP2183604A1 publication Critical patent/EP2183604A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G01R13/029—Software therefor

Definitions

  • FIG. 2 shows the course of a second exemplary analog and sampled signal 20 in a plurality of sampling passes.
  • the sampling points 21, 22, 23 correspond to three different sampling passages.
  • the distance between sampling points 21, 22, 23 of the same sampling pass is greater than the distance between the pixel lines. Consequently, between the sampling points are pixels in which no sampling point comes to lie.
  • the simplest display mode is the so-called point mode: on the screen only the samples are displayed as dots. If you have only one trace and a small N s px , ie few points per pixel column, you will only see single points on the screen. To see a closed curve on the screen during the point mode, you have to:
  • the brightness of a pixel on the screen is proportional to the number of times this pixel has been "hit".
  • FIG. 3 shows exemplary connection possibilities of measuring points on a two-dimensional display device.
  • a first option is that the line 30 runs completely in the column of the measuring point k 33.
  • Another option is that line 31 is completely in the column of
  • Measuring point k + l 34 runs.
  • One last option is that in each case half of the line 32 runs in the column of the measuring point k 33 and the measuring point 34 k + l. Disadvantages of these methods shown are that the line does not reflect the actual course of the measurement curve. This is especially true if the line is drawn completely in the column of the measuring point k 33 or the measuring point k + ⁇ 34.
  • FIG. 4 shows these exemplary connection possibilities of measuring points on a two-dimensional display device with superimposed possibly associated analog signal waveforms.
  • line 30 is shown completely in the column of the measuring point 33. This reflects well the possible course 40 of the analog signal.
  • analog signals 41 and 42 are mapped poorly. Artefacts arise. Pixels are displayed that are not passed by the actual analog signal. Similar considerations apply to the line 31 and the possible analog signals 44, 45, 46.
  • the line curve 32 gives better results with the possible analog signals 46, 47, 48, but also does not represent an optimum for all possible analog signals.
  • a first exemplary analog signal 53 is shown superimposed over associated measurement points 50, 51, 52 of several scanning passes on a two-dimensional display device.
  • a measurement curve 53 has a slope of five pixel rows 15 per pixel column 14 and is scanned once per pixel column 14, ie N s . This periodic trace 53 is scanned and recorded five times, each time slightly offset in time.
  • These sampling points 50, 51, 52 are marked X in the figure, those of the first sample are marked with a circle.
  • the connecting line is drawn completely in the column of the measuring point k 33. The connection to the following measuring point of the same scanning pass is drawn at each measuring point.
  • FIG. 6 shows a first exemplary output of a two-dimensional display device resulting from the signal from FIG. 5.
  • the artifacts explained with reference to FIG. 4 are shown here. If the pixel frequencies are represented as brightnesses 54, 55, 56, 57, 58 on the screen, the drawing smears on the screen due to the line drawing.
  • At ⁇ (k) is the time interval of the k-th point 63, 66, 68 to the beginning of the next image column m + 1, while At 2 (k) indicates how far the & + l-th point 64, 65, 67 already in the column m + ⁇ lies. Reformulation of Equation (15) by Equation (16) yields
  • N Lm e ⁇ k ⁇ n ⁇ -Nu) ⁇ S PX (m + ⁇ ) (17)
  • a second exemplary output 74 of a two-dimensional display device is shown here as a result of the signal 73 of Fig. 8. Since the frequency of crossing each of the pixels touching the connecting lines of the measuring points 70, 71, 72 is identical, there is no smearing of the resulting curve.
  • the curve 74 is continuous, sharp, and optimally adapted to the analog signal 73.
  • N Slät2 in relation to the current line length N (k) üme too low selected, for example, 10 sampling points, while the vertical distance between two pixels is 200 lines, only one point in every 20th line is either set. If you connect these 10 nodes, artefacts appear again. - If the number of nodes N smt2 large, for example, 100 nodes while the vertical distance between two pixels is 10 lines, so there is considerable unnecessary computational effort.
  • FIG. 10 shows a block diagram of an exemplary embodiment of the device according to the invention.
  • the sampled digitized measurements 104 are transmitted to a scaling device 100. This scales the measured values 104 such that they can be displayed on the display device 103.
  • the scaled measurements 105 are forwarded to the pixel mapper 101. This assigns the measured values to pixels on the display device 103.
  • the pixel connection device 102 generates the continuous measurement point curve if the pixels assigned by the pixel allocation device 101 are not directly adjacent.
  • the display device 103 displays the continuous measurement curve generated by the pixel connection device 102.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Des points de mesure (63, 64, 65, 66, 67, 68) destinés à être répertoriés sur un dispositif d'affichage à base pixels à deux dimensions, sont formés à partir de valeurs mesurées détectées et numérisées. Il s'avère que la résolution, en fonction du temps et/ou de la valeur, de chaque point de mesure (63, 64, 65, 66, 67, 68) est plus élevée que la résolution du dispositif d'affichage à base pixels à deux dimensions. Les points de mesure (63, 64, 65, 66, 67, 68) sont liés à une courbe continue des points de mesure (60, 61, 62) lorsqu'ils ne se trouvent pas sur des pixels directement voisins. Pour la détermination des pixels à représenter de la courbe continue des points de mesure (60, 61, 62) entre deux points de mesure (63, 64, 65, 66, 67, 68) qui ne se trouvent pas sur des pixels directement voisins, la position des points de mesure voisins (63, 64, 65, 66, 67, 68) est prise en ligne de compte au sein du pixel associé.
EP08759242A 2007-09-06 2008-06-13 Procédé et dispositif d'affichage de lignes entre des valeurs mesurées détectées Ceased EP2183604A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007042323A DE102007042323A1 (de) 2007-09-06 2007-09-06 Verfahren und Vorrichtung zur Anzeige von Linien zwischen abgetasteten Messwerten
PCT/EP2008/004790 WO2009033513A1 (fr) 2007-09-06 2008-06-13 Procédé et dispositif d'affichage de lignes entre des valeurs mesurées détectées

Publications (1)

Publication Number Publication Date
EP2183604A1 true EP2183604A1 (fr) 2010-05-12

Family

ID=39800523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08759242A Ceased EP2183604A1 (fr) 2007-09-06 2008-06-13 Procédé et dispositif d'affichage de lignes entre des valeurs mesurées détectées

Country Status (4)

Country Link
US (1) US8497864B2 (fr)
EP (1) EP2183604A1 (fr)
DE (1) DE102007042323A1 (fr)
WO (1) WO2009033513A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359728A (en) * 1980-11-03 1982-11-16 General Electric Company Method and means for minimizing distortion in television display
US4755960A (en) * 1985-06-20 1988-07-05 Tektronix, Inc. Waveform data compressing circuit
EP0356114A2 (fr) * 1988-08-23 1990-02-28 Tektronix, Inc. Conversion en points de trame de lignes droites
EP0631143A3 (fr) * 1993-06-28 1995-09-13 Hitachi Electronics Oscilloscope numérique avec écran plat d'affichage en couleur.
US5550963A (en) * 1994-12-08 1996-08-27 Tektronix, Inc. Graded display of digitally compressed waveforms
DE69718916T2 (de) 1997-11-28 2003-09-11 Fluke Corp Verfahren und Vorrichtung zum Darstellen von Wellenformen
US6104374A (en) * 1998-02-19 2000-08-15 Tektronix, Inc. Sparse vector rasterization
EP0947842A3 (fr) * 1998-04-03 2001-01-17 Tektronix, Inc. Correction de non-linéarité d'un oscilloscope digital avec tramage d'intensité variable
US6731286B2 (en) * 2001-12-11 2004-05-04 Lecroy Corporation Data compaction for fast display

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2009033513A1 *

Also Published As

Publication number Publication date
DE102007042323A1 (de) 2009-03-12
US8497864B2 (en) 2013-07-30
US20110267349A1 (en) 2011-11-03
WO2009033513A1 (fr) 2009-03-19

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