WO2004102213A1 - 信号測定表示装置および方法 - Google Patents
信号測定表示装置および方法 Download PDFInfo
- Publication number
- WO2004102213A1 WO2004102213A1 PCT/JP2004/006710 JP2004006710W WO2004102213A1 WO 2004102213 A1 WO2004102213 A1 WO 2004102213A1 JP 2004006710 W JP2004006710 W JP 2004006710W WO 2004102213 A1 WO2004102213 A1 WO 2004102213A1
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- WO
- WIPO (PCT)
- Prior art keywords
- display
- signal
- display device
- signal measurement
- measured
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
Definitions
- the present invention relates to setting operation of a spectrum analyzer. Background art
- the frequency of a signal has been measured using a spectrum analyzer.
- the spectrum analyzer displays the signal measurement results as a graph with the vertical axis plotting the frequency and the horizontal axis plotting the frequency.
- the user of the spectrum analyzer sets the operation of the spectrum analyzer by looking at the display of the spectrum analyzer. For example, set the frequency band for detecting the peak of power, set the area to be enlarged and displayed, and move the displayed area up, down, left and right. Enlarging and reducing the display screen of the spectrum analyzer is also described in Patent Document 1 (Japanese Patent Application Laid-Open No. H10-253673 (abstract)).
- setting the operation of the spectrum analyzer requires a great deal of effort.
- the invention described in claim 1 is a measuring means for measuring a signal to be measured for each frequency and outputting a measurement value, and a measurement signal on one axis, a frequency on another axis and a measurement signal on the other axis.
- the measuring unit measures the signal to be measured for each frequency and outputs the measured value.
- the display means displays the signal to be measured with the measured value on one axis and the frequency on the other axis.
- the part designating means designates a part on the display screen of the display means.
- the operation determining means determines the operation of the measuring means or the display means based on the part specified by the part specifying means.
- the invention according to claim 2 is the invention according to claim 1, wherein the part designating means is configured to designate a part by touching the display screen.
- the invention according to claim 3 is the invention according to claim 1, wherein the part designating means is configured to designate a part by moving a marker on the display screen according to an operation amount.
- the invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the operation determining means is configured to determine the measured value based on the position specified by the part specifying means. Determine the detection range for detecting the maximum value It is configured to be.
- the invention according to claim 5 is the invention according to claim 4, wherein the operation determining means detects the movement based on a value obtained by adding or subtracting a predetermined value from the coordinates of the part specified by the part specifying means. It is configured to determine a range.
- the invention according to claim 6 is the invention according to claim 4, wherein the operation determining means determines the detection range based on an area surrounded by the part specified by the part specifying means. Is done.
- the invention according to claim 7 is the invention according to any one of claims 1 to 3, wherein the operation determining means displays the signal to be measured on the display means based on the position specified by the part specifying means. Is configured to be displayed enlarged or reduced.
- the invention according to claim 8 is the invention according to claim 7, wherein the operation determining means enlarges and displays the signal to be measured between the frequency components of the coordinates of the two parts specified by the part specifying means. It is configured to be.
- the ninth aspect of the present invention is the invention according to any one of the first to third aspects, wherein the operation determining means is configured to display the signal to be measured based on the position designated by the part designating means. The display area is configured to be moved.
- the tenth aspect of the present invention is the invention of the ninth aspect, wherein the operation determining means is configured to display the part specified by the part specifying means on a display screen.
- the display means is configured to move an area in which the signal to be measured is displayed based on the position.
- the invention according to claim 11 is a measuring means for measuring a signal to be measured for each frequency and outputting a measured value, and a display for displaying the signal to be measured with the measured value on one axis and the frequency on another axis.
- Means for displaying a signal on a display screen of the display means the signal measuring and displaying method in a signal measurement and display device comprising a means for specifying a part on a display screen of the display means, wherein the measuring means Alternatively, an operation determining step of determining the operation of the display means is provided.
- FIG. 1 is a block diagram showing a configuration of a spectrum analyzer (signal measurement display device) 1 according to the first embodiment.
- FIG. 2 is a diagram showing an example of the display screen of the display unit 28.
- FIG. 3 is a diagram showing a method of designating a site using the evening touch panel 32.
- FIG. 4 is a diagram showing a method of specifying a site by the pointing device 34.
- FIG. 5 is a diagram showing a method of specifying a detection range by the peak determination area determination unit 38.
- FIG. 6 is a block diagram showing a configuration of a spectrum analyzer (signal measurement display device) 1 according to the second embodiment II.
- FIG. 7 is a diagram (FIG. 7 (a)) showing a method of designating a part using the touch panel 32 (FIG. 7 (a)) and a diagram (FIG. 7 (b)) showing a method of designating a part using the pointing device 34.
- FIG. 8 is a diagram showing a state where one point 32c and 32d are designated by a finger.
- FIG. 9 is a diagram showing a display screen of the enlarged display.
- FIG. 10 is a block diagram showing a configuration of a spectrum analyzer (signal measurement and display device) 1 according to the third embodiment.
- FIG. 11 is a diagram for explaining a method of specifying a part using the evening touch panel 32.
- FIG. 12 is a diagram showing a display screen when the display area is moved to the right.
- FIG. 13 is a diagram showing a display screen when the display area is moved downward.
- FIG. 1 is a block diagram showing a configuration of a spectrum analyzer (signal measurement display device) 1 according to a first embodiment.
- the spectrum analyzer (signal measurement display device) 1 according to the first embodiment includes a sweep signal generator 10, a local oscillator 12, a mixer 14, an intermediate frequency filter 16, and a detector (measurement means) 1.
- the sweep signal generator 10 generates a sweep signal for sweeping the frequency of a local signal generated by the local oscillator 12.
- the sweep signal is provided to the low frequency oscillator 12.
- the local oscillator 12 generates a local signal.
- the frequency of the local signal changes based on the sweep signal. That is, frequency sweep is performed.
- the local signal is provided to mixer 14.
- the mixer 14 is a multiplier that mixes and outputs the signal to be measured and the oral signal.
- the intermediate frequency filter 16 extracts a signal of a predetermined intermediate frequency from the output of the mixer 14.
- the detector (measuring means) 18 detects the signal extracted by the intermediate frequency filter 16. By the detection, the power for each frequency in the signal to be measured is obtained.
- the A / D converter 20 converts the output (analog signal) of the detector 18 into a digital signal.
- the measurement data recording unit 22 records the output of the A / D converter 20.
- the recorded contents of the measurement data recording unit 22 are called measurement data.
- the measurement data is the measured value (power) obtained by measuring the signal to be measured for each frequency, It is a correspondence.
- the measurement data reading section (measuring means) 24 reads the measurement data from the measurement data recording section 22.
- the measurement data reading unit 24 also detects the maximum value of the power of the signal detected by the detector 18 based on the measurement data recorded in the measurement data recording unit 22. However, the range of the frequency and power at which the measurement data reading unit 24 detects the local maximum value is determined by the peak determination region determination unit 38.
- the display (display means) 28 displays the output of the measurement data reading section 24.
- An example of the display screen of the display unit 28 is shown in FIG.
- the display unit 28 displays a signal to be measured with power on the vertical axis and frequency on the horizontal axis.
- the displayed graph is called spectrum 280.
- spectrum 280 has peaks 280a and 280Ob where the power increases.
- the peak detection is performed by the measurement data reading unit 2.
- the touch panel (part designating means) 32 and the pointing device (part designating means) 34 are used to designate parts on the display screen.
- Evening panel (means for specifying parts) 32 detects contact with the user's finger or the like.
- the evening touch panel 32 is provided on the display screen. Therefore, when the user touches the display screen with a finger or the like, the evening touch panel 32 detects the touched portion.
- Fig. 3 shows how to specify parts using the evening touch panel 32.
- One method is to bring a finger or the like into contact with a point 32a on the display screen as shown in Fig. 3 (a).
- Another method is to draw a rectangular closed area 32b on the display screen while touching the display screen with a finger or the like, as shown in Fig. 3 (b).
- the pointing device (part specifying means) 34 displays the marque on the display screen and specifies the part by moving it in accordance with the operation amount.
- the marker on the display screen moves according to the amount of moving the mouse.
- One method is to move the marker to a point 34a on the display screen as shown in Fig. 4 (a).
- Another method is to draw a rectangular closed area 34b on the display screen while moving the marker, as shown in Fig. 4 (b).
- the designated part determining unit 36 determines the coordinates of the part designated by the evening touch panel 32 and the pointing device 34.
- the peak determination area determining section (operation determining means) 38 is a frequency and power range in which the measurement data reading section 24 detects a local maximum value based on the area specified by the evening touch panel 32 and the pointing device 34.
- the detection range When a rectangular closed area 32b or 34b is drawn by a finger or a finger, the area may be set as the detection range. For example, in the example of Fig. 3 (b) and Fig. 4 (b), the frequency is f1-: f2, and the power is P1-P.
- the range of 2 is the detection range.
- the detection range When one point 32a (—point 34a) is designated by a finger (marker), the detection range may be a value obtained by adding or subtracting a predetermined value from the coordinates of the one point. For example, in the example of FIG. 5, if the coordinates of one point 32a are (f 0, P 0), the detection range is the frequency: fl to f 2 and the power is P 1 to P 2.
- the signal to be measured is mixed by the mixer 14 with the local signal generated by the oral oscillator 12. However, the local signal is frequency-swept by the sweep signal generated by the sweep signal generator 10. From the output of the mixer 14, a signal of a predetermined intermediate frequency is extracted by an intermediate frequency filter 16. The signal of the predetermined intermediate frequency is detected by the detector 18, and the power of each frequency of the signal to be measured is obtained. The measured power is converted into a digital signal by the A / D converter 20 and recorded in the measurement data recording unit 22.
- the measured data is recorded as a measurement data in association with the frequency.
- the measurement data is read out by the measurement data reading unit 24.
- the display 28 displays the signal to be measured as a graph with power on the vertical axis and frequency on the horizontal axis (see Fig. 2).
- the user of the spectrum analyzer 1 wants to know exactly the value of the power at the peak (maximum value) 280 c of the mountain 28 Ob.
- the user touches a point 3 2a near the peak (maximum value) 280c on the display screen (see Fig. 3 (a)), or a beak (maximum value).
- Draw a rectangular closed area 32b surrounding 280c with your finger on the display screen see Fig. 3 (b)).
- the designated part determining unit 36 determines the coordinates of the part designated by the evening touch panel 32.
- the peak determination area determination unit 38 sets the value obtained by adding or subtracting from the coordinates of the point 32a (see FIG. 5) or the area 32b as the detection range.
- the user may move the power on the display screen to a point 34a near the peak (maximum value) 280c on the display screen (see Fig. 4 (a)).
- (Maximum value) Draw a rectangular closed area 34b surrounding 280c with a marker on the display screen (see Fig. 4 (b)).
- the designated portion determining unit 36 determines the coordinates of the portion designated by the pointing device 34.
- the peak determination area determination unit 38 sets a value obtained by adding or subtracting from the coordinates of the point 34a (see FIG. 5) or the area 34b as the detection range.
- the measurement data reading unit 24 detects the maximum value of the power of the signal detected by the detector 18 in the detection range. That is, the maximum value of the power at the peak 280b (see FIG. 2) (the power at the peak (maximum value) 280c) is detected. The maximum value is converted into a digital signal by the AZD converter 20 and recorded in the measurement data recording unit 22. Then, it is read out by the measurement data reading unit 2. And the display 28 shows the maximum Displays the value.
- the detection range of the measurement data reading unit 24 can be set by touching the display screen with a finger or by moving a marker using a pointing device 34 such as a mouse. Therefore, it is easy to set the detection range. Second embodiment
- FIG. 6 is a block diagram showing a configuration of a spectrum analyzer (signal measurement display device) 1 according to the second embodiment.
- the spectrum analyzer (signal measurement display device) 1 according to the second embodiment includes a swept signal generator 10, a local oscillator 12, a mixer 14, an intermediate frequency filter 16, and a detector (measurement means) 1.
- measurement data readout section 24 display (display means) 28, sunset panel (part specifying means) 32, pointing device (part specifying means)
- Sweep signal generator 10 local oscillator 12, mixer 14, intermediate frequency filter 16, detector (measuring means) 18, A / D converter 20, measurement data recording section 22, measurement data
- the reading section 24 and the display (display means) 28 are the same as in the first embodiment.
- the touch panel (part designating means) 32 and the pointing device (part designating means) 34 are used to designate parts on the display screen. It is. Evening panel (means for specifying parts) 32 detects contact with the user's finger or the like.
- the evening touch panel 32 is provided on the display screen. Therefore, when the user touches the display screen with a finger or the like, the evening touch panel 32 detects the touched portion.
- a method of designating a part using the touch panel 32 is to bring a finger or the like into contact with one of the points 32 c and 32 d on the display screen.
- the pointing device (part specifying means) 34 displays the marque on the display screen and specifies the part by moving it in accordance with the operation amount. For example, like a mouse. The mouse moves on the display screen according to the amount of movement of the mouse.
- the method of designating the part by the pointing device 34 is to move the force to one point 34c, 34d on the display screen as shown in FIG. 7 (b).
- the designated part determining unit 36 determines the coordinates of the part designated by the evening touch panel 32 and the pointing device 34.
- the enlargement area determination unit (operation determination means) 40 determines an area where the display unit 28 enlarges and displays the signal to be measured based on the area specified by the evening touch panel 32 and the pointing device 34. The determined area is transmitted to the measurement data reading section 24, and the measurement data reading section 24 reads the measurement data in the area. If one point 3 2c or 3 2d is specified with a finger, the position of each point The measurement target signal between the target frequency components is enlarged and displayed. For example, in the example of FIG.
- the range of the frequency f 1 to f 2 is shown in FIG. Display as shown in. That is, those whose frequency is less than f1 or more than f2 are not displayed. The same applies to the case where the marque is moved to one point 34c and 34d on the display screen.
- the signal to be measured is mixed by the mixer 14 with the local signal generated by the local oscillator 12. However, the local signal is frequency-swept by the sweep signal generated by the sweep signal generator 10. A signal of a predetermined intermediate frequency is extracted from the output of the mixer 14 by the intermediate frequency filter 16.
- the signal of the predetermined intermediate frequency is detected by the detector 18 and the power of each frequency of the signal to be measured is obtained.
- the measured power is converted into a digital signal by the A / D converter 20 and recorded in the measurement data storage 22. However, the measured power is recorded as measurement data in association with the frequency.
- the measurement data is read out by the measurement data reading unit 24.
- the display 28 displays the signal to be measured as a graph with power on the vertical axis and frequency on the horizontal axis (see Fig. 2).
- the user of the spectrum analyzer 1 wants to enlarge and display the mountain 28 Ob. At this time, the user holds the finger at one point 3 2 c and 3 2 d on the display screen. (See Fig. 7 (a)).
- the touch panel 32 provided on the display screen detects a finger touch.
- the designated part determination unit 36 determines the coordinates of the part designated by the evening touch panel 32.
- the enlargement area determination unit 40 determines to enlarge and display the measurement target signal between the frequency components of the coordinates of the points 32c and 32d (see FIG. 8), and notifies the measurement data readout unit 24.
- the user moves the marker to one point 34c, 34d on the display screen (see Fig. 7 (b)).
- the designated part determination unit 36 determines the coordinates of the part specified by the pointing device 34.
- the enlargement area determination unit 40 determines to enlarge and display the signal to be measured between the frequency components of the coordinates of the points 34c and 34d, and notifies the measurement data readout unit 24.
- the measurement data readout unit 24 reads out the data to be measured at a frequency of 1 to 2:
- the measurement target data read out by the measurement data reading section 24 is displayed on the display 28.
- Frequency 1 From the region of f2, the peak 280b is included, and the peak 280b is enlarged and displayed (see Fig. 9).
- the second embodiment by touching the display screen with a finger or by moving a marker with a pointing device 34 such as a mouse, it is possible to set which portion is to be enlarged and displayed. Therefore, it is easy to set the enlarged display. If the user touches a specific part on the display screen with his / her finger or moves the mouse in the state shown in Fig. 9, the original display screen (Fig. 2), that is, may be displayed in a reduced size.
- FIG. 10 is a block diagram showing a configuration of a spectrum analyzer (signal measurement and display device) 1 according to the third embodiment.
- the spectrum analyzer (signal measurement display device) 1 according to the third embodiment includes a sweep signal generator 10, a local oscillator 12, a mixer 14, an intermediate frequency filter 16, and a detector (measuring means). 1, 8, AZD converter 20, measurement data recording section 22, measurement data reading section 24, display (display means) 28, sunset panel (part specification means) 32, pointing device (part specification) Means) 34, designated part determination section 36, display area determination section (movement determination means) 42.
- the same parts as those in the second embodiment are denoted by the same reference numerals, and the description is omitted.
- Sweep signal generator 10 local oscillator 12, mixer 14, intermediate frequency fill filter 16, detector (measurement means) 18, A / D converter 20, measurement data recording section 22, measurement data
- the overnight reading section 24 and the display (display means) 28 are the same as in the second embodiment.
- the touch panel (part specifying means) 32 and the pointing device (part specifying means) 34 are used to specify a part on the display screen. Evening panel (means for specifying parts) 32 detects contact with the user's finger or the like.
- the evening touch panel 32 is provided on the display screen. Therefore, when the user touches the display screen with a finger or the like, the touch panel 32 is touched. Detected site. The method of specifying a part using the evening touch panel 32 will be described with reference to FIG. As shown in FIG.
- the pointing device 34 displays the marque on the display screen and specifies the part by moving it in accordance with the operation amount. For example, like a mouse. As for the mouse, the marker on the display screen moves according to the amount of moving the mouse.
- the method of designating the site by the pointing device 34 is to move the marker to any of the regions 32e to: L on the display screen.
- the designated part determining unit 36 determines the coordinates of the part designated by the evening touch panel 32 and the pointing device 34.
- the display area determining unit (operation determining means) 42 determines an area in which the display unit 28 displays a signal to be measured based on a part specified by the evening touch panel 32 and the pointing device 34. The determined area is transmitted to the measurement data reading section 24, and the measurement data reading section 24 reads the measurement data in the area.
- the display area is moved to the right as shown in FIG.
- the display area is moved downward as shown in FIG. Area by finger 3 2 If e or f is specified, move the display area to the upper or left side. The same applies to the case where the marker is moved to the areas 32 e to h on the display screen.
- the signal to be measured is mixed by the mixer 14 with the oral signal generated by the local oscillator 12. However, the local signal is frequency-swept by the sweep signal generated by the sweep signal generator 10. From the output of the mixer 14, a signal of a predetermined intermediate frequency is extracted by the intermediate frequency filter 16. The signal of the predetermined intermediate frequency is detected by the detector 18 and the power of each frequency of the signal to be measured is obtained. The measured power is converted into a digital signal by the A / D converter 20 and recorded in the measurement data storage 22. However, the measured power is recorded as measurement data in association with the frequency. The measurement data is read by the measurement data reading unit 24.
- the display 28 displays the signal to be measured as a graph with power on the vertical axis and frequency on the horizontal axis (see Fig. 2).
- the user touches the finger on the area 32h on the display screen (see Fig. 11). Then, the evening touch panel 32 provided on the display screen detects the touch of the finger. The designated part determination unit 36 determines that the part designated by the evening touch panel 32 is the area 32 e! ! Is determined.
- the display area determination unit 42 determines to move the display area to the right side (see FIG. 12), and notifies the measurement data readout unit 24. Alternatively, the user moves the marker to the area 32h on the display screen. Then, the designated part determination unit 36 determines that the part designated by the pointing device 34 is the area 32 e! ! Is determined.
- the display area determination unit 42 determines to move the display area to the right side (see FIG. 12), and transmits it to the measurement data readout unit 24.
- the measurement data reading unit 24 increases the upper and lower limits of the frequency range of the measurement target data to be read by the same value.
- the measurement target data read by the measurement data reading unit 24 is displayed on the display unit 28.
- the display area has moved to the right (see Figure 12).
- the so-called scroll According to the third embodiment, it is possible to set which part is to be displayed by touching the display screen with a finger or by moving the mouse with a pointing device 34 such as a mouse. Therefore, setting of the display area (so-called scrolling) is easy. Further, the above embodiment can be realized as follows.
- each of the above parts for example, the peak determination area determination unit 38, Read the media that stores the program that implements the enlargement area determination unit 40 or the display area determination unit 42, and install it on the hard disk. Even with such a method, the above functions can be realized.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112004000835T DE112004000835T5 (de) | 2003-05-15 | 2004-05-12 | Signalmess-/Anzeigevorrichtung und Verfahren |
US10/556,352 US20070132761A1 (en) | 2003-05-15 | 2004-05-12 | Signal measuring device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003137392A JP2004347320A (ja) | 2003-05-15 | 2003-05-15 | 信号測定表示装置および方法 |
JP2003-137392 | 2003-05-15 |
Publications (1)
Publication Number | Publication Date |
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WO2004102213A1 true WO2004102213A1 (ja) | 2004-11-25 |
Family
ID=33447256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/006710 WO2004102213A1 (ja) | 2003-05-15 | 2004-05-12 | 信号測定表示装置および方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070132761A1 (ja) |
JP (1) | JP2004347320A (ja) |
DE (1) | DE112004000835T5 (ja) |
WO (1) | WO2004102213A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4665664B2 (ja) * | 2005-08-24 | 2011-04-06 | ヤマハ株式会社 | シーケンスデータ生成装置およびシーケンスデータ生成プログラム |
JP2008107277A (ja) * | 2006-10-27 | 2008-05-08 | Funai Electric Co Ltd | 信号測定表示装置 |
JP5220320B2 (ja) * | 2007-01-22 | 2013-06-26 | アンリツ株式会社 | 信号解析装置及び信号解析方法 |
GB2467134A (en) * | 2009-01-22 | 2010-07-28 | Adam David Loveridge | Electronic test equipment having a flat panel display |
US20110063522A1 (en) * | 2009-09-14 | 2011-03-17 | Jeyhan Karaoguz | System and method for generating television screen pointing information using an external receiver |
KR101640464B1 (ko) * | 2009-10-26 | 2016-07-18 | 삼성전자 주식회사 | 터치스크린 기반의 ui 제공방법 및 이를 이용한 휴대 단말기 |
JP5814865B2 (ja) * | 2012-06-20 | 2015-11-17 | 株式会社 日立産業制御ソリューションズ | 撮像装置 |
US9200962B1 (en) * | 2012-06-21 | 2015-12-01 | The United States Of America As Represented By The Secretary Of The Navy | Window calibration method for harmonic analysis of optical spectra |
JP2014036374A (ja) | 2012-08-09 | 2014-02-24 | Jvc Kenwood Corp | 無線送受信機、及び運用周波数設定方法 |
US9136888B2 (en) | 2013-06-28 | 2015-09-15 | JVC Kenwood Corporation | Radio receiver and reception frequency setting method used therein, and frequency setting device and frequency setting method |
JP2015028461A (ja) * | 2013-06-28 | 2015-02-12 | 株式会社Jvcケンウッド | 周波数設定装置及び周波数設定方法 |
DE102014203355A1 (de) * | 2014-02-25 | 2015-09-10 | Rohde & Schwarz Gmbh & Co. Kg | Messverfahren und Messgerät mit Fingertip-Zoom |
JP6507637B2 (ja) * | 2014-12-26 | 2019-05-08 | アイコム株式会社 | 受信状況表示機能を備えた無線通信装置及び無線通信装置における受信状況表示方法 |
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WO1991015776A1 (en) * | 1990-03-30 | 1991-10-17 | Anritsu Corporation | Waveshape display device for facilitating observation of fine waveshape simply |
JPH10253673A (ja) * | 1997-03-13 | 1998-09-25 | Advantest Corp | スペクトラム表示方法及びスペクトラムアナライザ |
Family Cites Families (5)
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US5038096A (en) * | 1989-07-28 | 1991-08-06 | Hewlett-Packard Company | Spectrum analyzer circuit for pulsed input signals |
US5579463A (en) * | 1990-03-30 | 1996-11-26 | Anritsu Corporation | Waveform display apparatus of frequency sweep type for facilitating display of a high definition waveform |
US5617523A (en) * | 1990-11-30 | 1997-04-01 | Anritsu Corporation | Waveform display apparatus for easily realizing high-definition waveform observation |
US5869959A (en) * | 1991-09-02 | 1999-02-09 | Advantest Corporation | Spectrum analyzer |
US20030134599A1 (en) * | 2001-08-08 | 2003-07-17 | Pangrac David M. | Field technician assistant |
-
2003
- 2003-05-15 JP JP2003137392A patent/JP2004347320A/ja not_active Withdrawn
-
2004
- 2004-05-12 DE DE112004000835T patent/DE112004000835T5/de not_active Withdrawn
- 2004-05-12 WO PCT/JP2004/006710 patent/WO2004102213A1/ja not_active Application Discontinuation
- 2004-05-12 US US10/556,352 patent/US20070132761A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1991015776A1 (en) * | 1990-03-30 | 1991-10-17 | Anritsu Corporation | Waveshape display device for facilitating observation of fine waveshape simply |
JPH10253673A (ja) * | 1997-03-13 | 1998-09-25 | Advantest Corp | スペクトラム表示方法及びスペクトラムアナライザ |
Also Published As
Publication number | Publication date |
---|---|
JP2004347320A (ja) | 2004-12-09 |
DE112004000835T5 (de) | 2006-03-16 |
US20070132761A1 (en) | 2007-06-14 |
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