EP2100154A1 - Verfahren und vorrichtung zur darstellung von ordinaten-abszissen-wertepaaren auf einer anzeige-einrichtung - Google Patents
Verfahren und vorrichtung zur darstellung von ordinaten-abszissen-wertepaaren auf einer anzeige-einrichtungInfo
- Publication number
- EP2100154A1 EP2100154A1 EP07802269A EP07802269A EP2100154A1 EP 2100154 A1 EP2100154 A1 EP 2100154A1 EP 07802269 A EP07802269 A EP 07802269A EP 07802269 A EP07802269 A EP 07802269A EP 2100154 A1 EP2100154 A1 EP 2100154A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ordinate
- abscissa
- abscissa value
- values
- value pairs
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001228 spectrum Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000003595 spectral effect Effects 0.000 description 10
- 230000009466 transformation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
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
- the invention relates to a method and a device for displaying ordinate-abscissa value pairs on a display device.
- a low-pass filter 1 for limiting the frequency of the signal to be displayed with regard to the sampling theorem
- an analog-to-digital converter 2 for digitizing the signal to be represented
- a fast Fourier transformer 3 for calculating the discrete Fourier spectral lines by fast Fourier
- an absolute value generator 4 for determining the power spectral lines
- a logarithmizer 5 for compressing the wide signal range scattered power spectral lines on the display area of the display device and a display device 6 with discrete display points in ordinate and abscissa direction to represent the discrete power spectral lines
- the resolution of the measured values to be displayed both in If the abscissa and also in the ordinate direction is greater than the resolution of the display device 6, the resolution of the measured values to be displayed must be reduced on the display device 6 before carrying out the representation of the measured values.
- a reduction in the resolution of the measured values to be displayed in the abscissa direction leads disadvantageously to a loss of information of the measured values to be displayed in the ordinate direction. Strong fluctuations of the measured values to be displayed over a larger range of values in the ordinate direction thus cause an unacceptable accuracy error, in particular in the case of real-time data acquisition and display.
- the object of the invention is therefore the accuracy of a real-time data display of detected in real time
- the invention is achieved by the method according to the invention for displaying ordinate-abscissa value pairs on a display device having the features of claim 1 and by the device according to the invention for displaying ordinate-abscissa value pairs on a display device having the features of claim 8 solved .
- the ordinate values of two adjacent measured values have significantly different values-for example, the detected frequency spectrum of a transmission signal filtered with a narrow-band bandpass filter-then the ordinate values of the two adjacent measured values become half the distance between the abscissa values by linear interpolation the ordinate values located at the two adjacent measured values and taken into account for the determination of the maximum and minimum values of the ordinate values of all ordinate-abscissa value pairs within the half distance of the respective abscissa value to be represented by the abscissa value on the right and left side.
- FIG. 2 is a block diagram of a device according to the invention for the representation of ordinate Abscissa value pairs on a display device
- 3A, 3B show an ordinate abscissa representation of ordinate-abscissa value pairs at high and low data reduction in the abscissa direction and
- Abscissa value pairs on a display device Abscissa value pairs on a display device.
- the inventive device 7 for displaying ordinate-abscissa value pairs on a display device 6 in FIG. 2 receives from the logarithm 5 in the cycle of the FFT calculation a vector v_Y-log with a total of N FFT discrete logarithmic level values Y_log of the power spectral lines to be represented.
- a quantizer 8 the discrete logarithmic level values Y-log of the power spectral lines to be represented as ordinate values of a total of N FFT ordinate abscissa value pairs are quantized in the ordinate direction with respect to the total Ly possible display points v_Y_log 'of the pixel graphics of the display device 6.
- an interpolator 9 which is preferably designed as a linear interpolator which, for each of a total of Lx can be displayed on the display device 6 abscissa value s, the ordinate v_Y ün (s) and v_Yii n (s + l) of additional ordinate abscissas Value pairs are calculated at half the distance of the respective abscissa value s to the next left-side and right-side adjacent abscissa value s-1 and s + 1 by means of interpolation of the two respectively nearest quantized discrete logarithmic level values Y_log 'of the power spectral lines to be represented.
- the maximum and minimum values v_Y max and v_Y min determined overall by Lx in the extreme value generator 10 and representing the level values of the power spectral lines to be displayed in the total displayable levels of the display device 6 are displayed to the display device 6 as ordinate values in the pixel graphic on the display - Pass device 6 to be displayed ordinate-abscissa value pairs.
- f P i xe i of the display means 6 in Fig. 3 The abscissa direction determines the maximum value v_Y max (s) and the minimum value v_Y min (s) in the respective abscissa value s and the linearly interpolated ordinate value v_Y ün (s) at half the distance between the respective abscissa value s and its left and right adjacent Abscissa value s-1 and s + 1 shown.
- FIGS. 3A and 3B also show the shaded area shown on the display device 6 between the respective maximum value v_Y max (s) and minimum value v_Y min (s) and the half distances between the respective abscissa value s and its left and right sides Abscissa value s-1 and s + 1 too which is intended to replace the ordinate-abscissa value pairs within the shaded area of the quantized logarithmic level values Y_log 'of the power spectral lines to be displayed on the display device 6.
- the logarithmic 5, determined within a FFT cycle of the FFT transformer 3, are subjected to logarithmized, discrete level values v_Y_log of the power spectrum of a quantization in the quantizer 8, in which the
- step S20 the interpolated ordinate values v_Yn n of the power spectrum at half the distance between in each case two adjacent abscissa values by means of interpolation, in particular by means of linear interpolation, for each Lx that can be represented on the display device 6 are selected from the respective right-sided and on the left-hand side, quantized level values of the power spectrum determined by means of FFT transformation are calculated.
- abscissa values which can be represented on the display device 6 for all Lx are all ordinate-abscissa value pairs located within the respective half distance to the abscissa value adjacent to the right-hand and left-hand side, respectively, and quantized by FFT transformation the respective maximum and minimum values v_Y max (s) and v_Y min (s) and the display device 6 for display as area between maximum and minimum values v_Y max (s) and v_Y min (s) for each representable on the display device 6 abscissa value s.
- the invention is not limited to the illustrated embodiment.
- the invention covers not only linear interpolation but also other higher-order interpolation methods.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006047994A DE102006047994A1 (de) | 2006-10-10 | 2006-10-10 | Verfahren und Vorrichtung zur Darstellung von Ordinaten-Abszissen-Wertepaaren auf einer Anzeige-Einrichtung |
| PCT/EP2007/007920 WO2008043420A1 (de) | 2006-10-10 | 2007-09-11 | Verfahren und vorrichtung zur darstellung von ordinaten-abszissen-wertepaaren auf einer anzeige-einrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2100154A1 true EP2100154A1 (de) | 2009-09-16 |
Family
ID=38728915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07802269A Withdrawn EP2100154A1 (de) | 2006-10-10 | 2007-09-11 | Verfahren und vorrichtung zur darstellung von ordinaten-abszissen-wertepaaren auf einer anzeige-einrichtung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8228331B2 (de) |
| EP (1) | EP2100154A1 (de) |
| DE (1) | DE102006047994A1 (de) |
| WO (1) | WO2008043420A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012202941A1 (de) | 2012-02-27 | 2013-08-29 | Rohde & Schwarz Gmbh & Co. Kg | Verfahren und Vorrichtung zur Darstellung von Ordinaten-Abszissen-Wertepaaren auf einer Anzeigeeinrichtung |
| DE102012208405A1 (de) | 2012-05-21 | 2013-11-21 | Rohde & Schwarz Gmbh & Co. Kg | Messgerät und Verfahren zur verbesserten Abbildung von Spektralverläufen |
| US11763333B2 (en) | 2013-08-20 | 2023-09-19 | Group One Thousand One, Llc | Systems and methods for financial data communications and data management |
| CN113381766A (zh) * | 2021-06-25 | 2021-09-10 | 河北省科学院应用数学研究所 | 用于心电数据压缩的方法、终端及存储介质 |
| CN115840231B (zh) * | 2023-02-20 | 2023-04-28 | 深圳市欢创科技有限公司 | 测距方法及激光雷达 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3792464A (en) * | 1973-01-10 | 1974-02-12 | Hitachi Ltd | Graphic display device |
| US4701937A (en) * | 1985-05-13 | 1987-10-20 | Industrial Technology Research Institute Republic Of China | Signal storage and replay system |
| US4755960A (en) * | 1985-06-20 | 1988-07-05 | Tektronix, Inc. | Waveform data compressing circuit |
| JPH01296169A (ja) * | 1988-05-24 | 1989-11-29 | Sony Corp | スペクトラムアナライザ |
| US5028914A (en) * | 1988-06-23 | 1991-07-02 | Motorola, Inc. | Method and apparatus for waveform digitization |
| US5103402A (en) * | 1988-07-05 | 1992-04-07 | Tektronix, Inc. | Method and apparatus for identifying, saving, and analyzing continuous frequency domain data in a spectrum analyzer |
| JPH047684A (ja) * | 1990-04-25 | 1992-01-13 | Shimadzu Corp | データ表示方式 |
| GB2271043B (en) | 1992-09-21 | 1996-05-22 | Gould Inc | Display resolution enhancement using data compression |
| JP3185949B2 (ja) * | 1992-09-22 | 2001-07-11 | 横河電機株式会社 | 波形観測装置 |
| US5488698A (en) * | 1992-11-05 | 1996-01-30 | Oliver; David C. | Rasterization of line segments using difference vectors |
| US5572443A (en) * | 1993-05-11 | 1996-11-05 | Yamaha Corporation | Acoustic characteristic correction device |
| JPH0720153A (ja) * | 1993-06-30 | 1995-01-24 | Hioki Ee Corp | 波形記録計の波形表示方法 |
| US5684507A (en) * | 1994-09-07 | 1997-11-04 | Fluke Corporation | Method of displaying continuously acquired data on a fixed length display |
| US5550963A (en) * | 1994-12-08 | 1996-08-27 | Tektronix, Inc. | Graded display of digitally compressed waveforms |
| US5790133A (en) * | 1996-02-27 | 1998-08-04 | Hewlett-Packard Company | Method of rapidly displaying large data records retrieved by deep memory digital oscilloscopes and logic analyzers |
| US6104374A (en) * | 1998-02-19 | 2000-08-15 | Tektronix, Inc. | Sparse vector rasterization |
| US6184898B1 (en) * | 1998-03-26 | 2001-02-06 | Comparisonics Corporation | Waveform display utilizing frequency-based coloring and navigation |
| JP2002228687A (ja) * | 2001-01-30 | 2002-08-14 | Iwatsu Electric Co Ltd | 波形情報表示方法および波形情報表示装置 |
| JP2003315370A (ja) * | 2002-04-24 | 2003-11-06 | Yokogawa Electric Corp | 波形記録装置 |
| US6934646B2 (en) * | 2002-10-21 | 2005-08-23 | Agilent Technologies, Inc. | Waveform complexity detector |
| DE102004012072A1 (de) * | 2004-03-12 | 2005-09-29 | Robert Bosch Gmbh | Ortungsgerät |
| US7571064B2 (en) * | 2006-03-31 | 2009-08-04 | Apple Inc. | Display digital signal visualizations with increasing accuracy |
-
2006
- 2006-10-10 DE DE102006047994A patent/DE102006047994A1/de not_active Withdrawn
-
2007
- 2007-09-11 WO PCT/EP2007/007920 patent/WO2008043420A1/de not_active Ceased
- 2007-09-11 US US12/444,475 patent/US8228331B2/en active Active
- 2007-09-11 EP EP07802269A patent/EP2100154A1/de not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2008043420A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100013834A1 (en) | 2010-01-21 |
| US8228331B2 (en) | 2012-07-24 |
| WO2008043420A1 (de) | 2008-04-17 |
| DE102006047994A1 (de) | 2008-04-17 |
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