CN102053185B - Digital oscilloscope having area print and print preview functions and control method thereof - Google Patents
Digital oscilloscope having area print and print preview functions and control method thereof Download PDFInfo
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- CN102053185B CN102053185B CN 200910237396 CN200910237396A CN102053185B CN 102053185 B CN102053185 B CN 102053185B CN 200910237396 CN200910237396 CN 200910237396 CN 200910237396 A CN200910237396 A CN 200910237396A CN 102053185 B CN102053185 B CN 102053185B
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Abstract
The invention relates to a print method having area print and print preview functions, which comprises the following steps: 1) an area print step: 1.1) starting a print operation; 1.2) acquiring data sets corresponding to print areas from a video card data source in accordance with the print areas set by a user, saving parameters of the data sets, carrying out layer overlapping on the acquired data sets to generate print data according to the parameters of the data sets, and saving the print data; and 1.3) sending the print data to a printer; and 2) a print preview step: 2.1) receiving a user command, and starting a preview operation; 2.2) acquiring data sets corresponding to print areas from a video card data source in accordance with the print areas set by a user, saving parameters of the data sets, carrying out layer overlapping on the acquired data sets to generate print data according to the parameters of the data sets, and saving the print data; 2.3) acquiring preview source data from the print data, converting the preview source data into preview data conforming to preview settings, and saving the preview data; and 2.4) displaying the preview data in a preview interface. By using the method, the area print and preview print of data can be realized.
Description
Technical field
The present invention relates to have the digital oscilloscope and the control method thereof of zone printing and Print Preview function.
Background technology
Digital oscilloscope is the observation signal waveform intuitively, is a kind of basic instrument of field of measurement.In measurement, the user often saves as picture with it after using oscillograph to capture problem signals, through PC photo print is come out when waiting to need to use.
Digital oscilloscope all has direct printing function at present, directly prints to allow the user to need not can obtain print result through PC, provides users with the convenient to a certain extent, has promoted user experience.
But the user can't the print preview effect before printing, and therefore, the picture that the user obtains through direct printing might not be that it hopes to obtain.Like this, the user has to be provided with once more printing once more, till satisfaction.
At present, the print area of digital oscilloscope support is defaulted as screen, and can not select.When the user hopes only to comprise waveform in the print result, must earlier screen display be saved as picture, in PC, wave regions extracted then again and print.
As stated, all dispose printing function in the digital oscilloscope at present, but there is following shortcoming in its printing function:
The user can't selective printing the zone, promptly can't print selectively;
2. the user can't the print preview result, promptly can't foresee printing effect.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of digital oscilloscope and Method of printing thereof with zone printing and Print Preview function, the optional print area of this method is realized the zone printing; But the print preview data can be foreseen printing effect before printing.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of Method of printing with zone printing and Print Preview function, it may further comprise the steps:
1) regional printing step comprises:
1.1) receive the printing sign on that the user sends, start printing;
1.2) according to the print area that the user is provided with, from the video card data source, obtain the data set corresponding with print area and preserve parameter set metadata, the data set that obtains is carried out according to parameter set metadata figure is range upon range of to be added, generate print data and preservation;
1.3) print data is delivered to printer prints,
2) Print Preview step comprises:
2.1) receive user instruction, start preview operation;
2.2) according to the print area that the user is provided with, from the video card data source, obtain the data set corresponding with print area and preserve parameter set metadata, the data set that obtains is carried out according to parameter set metadata figure is range upon range of to be added, generate print data and preservation;
2.3) from print data, obtain the preview source data, the preview source data is converted into preview data and the preservation that meets the preview setting;
2.4) preview data is shown in preview interface.
A kind of digital oscilloscope with zone printing and Print Preview function; Comprise: front end signal conditioning unit, ADC, data processing unit, triggering processing unit, demonstration/control module, screen, keyboard and peripheral hardware; Wherein: the output of front end signal conditioning unit connects ADC and triggers processing unit; ADC is connected with the input of data processing unit; Trigger processing unit and be connected with the input of data processing unit, the output of data processing unit is delivered to screen through demonstration/control module, and keyboard and peripheral hardware connect demonstration/control module; Signal is after nursing one's health through the front end numeral, and by the ADC sampling, ADC delivers to data processing unit with digitized signal and calculates, and data processing unit is delivered to screen display.
Further:
Said step 1.2) and 2.2) in the print area that is provided with of user comprise screen area and wave regions, screen area is meant the zone that all show on screen, wave regions refers to only comprise in the print result waveform.
Said step 1.2) and 2.2) in the video card data source be meant video card physical map layer data; Video card has a plurality of physical map layers; Each figure layer carries different video datas; Be display data on the screen through the range upon range of show layers that adds generation of figure, its stack order is served as reasons the end upwards, and promptly Background From Layer is the bottom and the menu map layer is the superiors.
Said step 1.2) and 2.2) in data set be meant the data of from video card figure layer, obtaining according to print area.
Said step 1.2) with 2.2) in parameter set metadata comprise different video card figure layers with respect to upper left, the bottom right apex coordinate of the same coordinate system with scheme range upon range of additive attribute, the stack attribute comprise at least with or, XOR, covering.
Said step 1.2) and 2.2) in obtain data set and parametric technique thereof, may further comprise the steps according to zones of different:
If print area is a screen, then obtain video card physical map layer data and preservation at first from bottom to up successively, preserve simultaneously and respectively scheme the layer data parameter; Then according to coordinate and stack attribute according to physical map layer superpose the successively data of the same coordinate of different figure layers of order from bottom to up, the data of stack acquisition are print data,
If print area is a waveform, then obtain video card oscillogram layer data and preservation, can obtain print data.
When print area was screen, performing step was following:
Obtain each video card physical map layer data collection parameter, confirm the rectangle housing after the stack of figure layer data finishes;
According to rectangle frame coordinate and video card physical map layer, order is got same coordinate data and stack successively in each figure layer successively from bottom to up.
Step 2.3 during said Print Preview is realized) the preview setting described in comprises preview level, vertical moving and preview pantograph ratio at least;
Said step 2.3) method of from print data, obtaining preview data in comprises:
2.3.1) according to preview the positional information of calculating preview data with respect to print data is set;
2.3.2) successively corresponding print data is carried out convergent-divergent according to scaling according to the positional information that obtains, the data behind the convergent-divergent are preview data, said positional information comprises initial row, initial row and termination row, end column at least.
The present invention has following beneficial effect:
1. the present invention can print according to the print area that the user is provided with when printing, the effectively outstanding emphasis of printing;
2. the present invention can print preview earlier when printing, and can foresee printing effect before printing, and can effectively revise setting of printing based on this, improves the print result degree of functioning.
Description of drawings
Fig. 1 is the basic block diagram of digital oscilloscope of the present invention;
Fig. 2 is the hardware composition frame chart of digital oscilloscope of the present invention;
Fig. 3 is a printing process flow diagram of the present invention;
Fig. 4 is a Print Preview process flow diagram of the present invention;
Fig. 5 is a video card physical map layer synoptic diagram;
Fig. 6 stack result rectangle frame displayed map;
Fig. 7 and Fig. 8 are the runnable interface figure of system;
Fig. 9 is the operational flow diagram of system.
Embodiment
The present invention relates to have the digital oscilloscope and the control method thereof of zone printing and Print Preview function.
The basic structure of digital oscilloscope of the present invention is as shown in Figure 1, and it comprises: front end signal conditioning unit, ADC, data processing unit, triggering processing unit, demonstration/control module, screen, keyboard and peripheral hardware.Wherein: the output of front end signal conditioning unit connects ADC and triggers processing unit; ADC is connected with the input of data processing unit; Triggering processing unit is connected with the input of data processing unit; The output of data processing unit is delivered to screen through demonstration/control module, and keyboard and peripheral hardware connect demonstration/control module.
Signal is after nursing one's health through the front end numeral, and by a slice or several ADC samplings, digitized afterwards signal is sent to data processing unit and calculates, and finally shows.
Its detailed hardware configuration is as shown in Figure 2, mainly comprises: four analog front end circuit passages, two-way ADC sampling, two paths of data processing unit, indicative control unit, screen.Wherein: four passages are analog front end circuit passage independently, and each passage all has independently passage setting, amplifies decay, skew and trigger circuit.Signal through the front end analog channel was nursed one's health is sampled by ADC; Wherein ADC1 is responsible for the sampling of passage 1 and passage 2; ADC2 is responsible for the sampling of passage 3 and passage 4, and there are four independently ADC unit every ADC inside, can select the situation that interweaves through control; When four ADC unit are gathered one road front end analog channel simultaneously, will realize the high sampling rate of 5GSa/s.Data processing unit PGA1 and FPGA2 are responsible for two groups of channel sample respectively and handle, and ADC gathers the data of coming will be organized into a root locus at this, and the senior general of oscillograph per second gathers the Wave data of 130,000 frames.Because the liquid crystal display per second can only refresh about 30 times; Data processing unit FPGA3 and FPGA4 are responsible for ten hundreds of tracks is shown as tens frames through the mode that superposes; Simultaneously for better display waveform; Can extract and interpolation data point according to the pixel situation on the liquid crystal display, these Frames show on the LCDs through the indicative control unit among the data processing unit FPGA5.
User's key assignments is transferred among the DSP through CPLD decoding, according to the step that configures in the program, through FPGA5 this circuit of control and demonstration.The storer that the user can directly use is by the DSP control operation.
Simultaneously, in order to ensure circuit safety, also be furnished with a coprocessor MCU on the mainboard, it is through the voltage in the sensor monitoring hardware circuit, temperature or the like information, and with these information transmission in DSP.
Of the present invention have that print in the zone and the Method of printing of Print Preview function, can be applicable to but be not limited only to current oscillograph platform.It may further comprise the steps:
1) regional printing step, Fig. 3 is the realization flow of regional printing function, comprises following steps:
1.1) receive the printing sign on that the user sends, start printing;
1.2) from the video card data source, obtain the data set corresponding with print area and preserve parameter set metadata according to the print area of user's setting, be provided with according to print area then and the data set that obtains superposeed generation print data and preservation according to parameter set metadata;
Data set is meant the data of being obtained by the different coordinate of difference figure layer, parameter set metadata described data centralization take from each figure layer data initial, stop coordinate and stack attribute mutually.Be meant according to parameter set metadata stack, data centralization is taken from coordinate and the attributes that the data of different figure layers are described according to parameter set metadata, the data of same coordinate are superposeed.For example, data A belongs to figure layer a, and coordinate is (20,30); Data B belongs to figure layer b, and coordinate is similarly (20,30), and then data A should superpose with data B, and the stack attribute is confirmed by the data that are positioned at last figure layer.
1.3) and printer communication, print data is sent to printer, carry out actual printing.
2) Print Preview step, Fig. 4 is the realization flow of Print Preview function, comprises following steps:
2.1) receive user instruction, start preview operation;
2.2) from the video card data source, obtain the corresponding data set of print area and preserve parameter set metadata according to the print area of user's setting; Be provided with according to print area then the data set that obtains is carried out the range upon range of generation print data that adds of figure according to parameter set metadata, preserve print data simultaneously;
2.3) according to the preview setting; From print data, obtain the preview source data; Be converted into the preview data and the preservation that meet the preview setting, the data that meet the preview setting are meant the data that skew, convergent-divergent multiple obtain and convergent-divergent finishes according to the preview setting from print data;
2.4) preview data is shown in preview interface.
Above-mentioned zone is printed and the realization of Print Preview all needs at first through following steps structure print data.
Step 1.2) and 2.2) described in the user print area be set comprise screen and two kinds of zones of waveform.Screen area is meant all zones that on screen, show (left and right sides menu need be hidden), and wave regions refers to only comprise in the print result waveform.
Step 1.2) and 2.2) described in the video card data source refer to video card physical map layer data, video card as shown in Figure 5 has a plurality of physical map layers, each figure layer carries different video datas, is display data on the screen through the range upon range of show layers that adds generation of figure.Its stack order end of serving as reasons upwards is that Background From Layer is the bottom, and the menu map layer is the superiors.
Step 1.2) and 2.2) described in data set be meant the data of from video card figure layer, obtaining according to aforementioned print area.
Step 1.2) with 2.2) described in parameter set metadata comprise that different video card figure layers are with respect to upper left, the bottom right apex coordinate of the same coordinate system with scheme range upon range of additive attribute.For example, among Fig. 6 each apex coordinate of menu map layer by left upper apex beginning be followed successively by clockwise (left, top), (right; Top), (right, bottom), (left, bottom); Then in its parameter set metadata coordinate parameters be (left, top) with (right, bottom).
The stack attribute comprises at least: with or, XOR, covering.For example; Existing A, B, C, D, five figure layers of E, stack order serve as reasons down supreme, the stack attribute be followed successively by and or, XOR, covering; Get the point that has same coordinate on each figure layer, suppose to be respectively a, b, c, d, e and this point data value and be (binary number):
a＝1101 1111 1110 1100
b＝0101 0011 0111 1011
c＝1011 1100 1000 1011
d＝0000 0110 0011 0110
e＝1100 1100 1011 1111
Design calculate intermediate value be f and with or, xor operation is bit manipulation, then:
The result of f=a and b is f=0101 0,011 0,110 1000
The result of f=f or c is f=1111 1,111 1,110 1011
The result of f=f XOR d is f=1111 1,001 1,101 1101
The result that f=f covers e is f=e=1100 1,100 1,011 1111
Step 1.2) and 2.2) described in obtain data set and parametric technique thereof, may further comprise the steps according to zones of different:
1. print area is a screen
1) obtains video card physical map layer data and preserve from bottom to up successively, should preserve simultaneously and respectively scheme the layer data parameter, promptly preserve each figure layer with respect to four apex coordinates of screen and the stack attribute of figure layer.
2) according to coordinate and stack attribute according to physical map layer superpose the successively data of the same coordinate of different figure layers of order from bottom to up, the data of stack acquisition are print data.The menu exception.
2. print area is a waveform
Obtain video card oscillogram layer data and preservation, can obtain print data.Video card has the oscillogram layer, directly data is derived by video card oscillogram layer to get final product, and, data is read in the internal memory that is used to preserve these data by video card oscillogram layer internal memory that is.
When print area was screen, performing step also can be following:
1) obtains each video card physical map layer data collection parameter; Confirm the rectangle housing after the stack of figure layer data finishes, get each stacking diagram's layer apex coordinate maximal value, promptly obtain the apex coordinate of rectangle housing; The rectangle housing is used for describing the apex coordinate of stack back data, the data area that promptly need superpose.As shown in Figure 6.
2) according to rectangle frame coordinate and video card physical map layer, order is got same coordinate data and stack successively in each figure layer successively from bottom to up.Its stacked system is equally by the range upon range of additive attribute decision of figure.
Step 2.3 during Print Preview is realized) the preview setting described in comprises at least: preview level, vertical moving and preview pantograph ratio.
Step 2.3) method of from print data, obtaining preview data described in comprises:
2.3.1) according to preview the positional information of calculating preview data with respect to print data is set;
2.3.2) successively corresponding print data is carried out convergent-divergent according to scaling according to the positional information that obtains, the data behind the convergent-divergent are preview data.
Wherein, said positional information comprises at least: initial row, initial row and termination row, end column.
Said positional information calculation method may further comprise the steps:
1. confirm the preview data centre coordinate: at first, be constant when convergent-divergent multiple centre coordinate less than 1 time keeps default value; Secondly, its centre coordinate is constant when only changing the convergent-divergent multiple; At last, the principal element that influences centre coordinate is level, vertical shift.Computing formula: establish the acquiescence centre coordinate for (x0, y0)=(240,400), zoom factor is k1, horizontal-shift is Xoffset, vertical shift is Yoffset, calculate the gained centre coordinate and be (x, y), then:
if?k1＞1
x＝x0+Xoffset/k1
y＝y0+Yoffset/k1
else
x＝x0
y＝y0
2. calculate initial row, initial row, termination row, end column.If initial behavior Ystart, the initial Xstart that classifies as, termination behavior Yend stops classifying Xend as, establishes that the screen that shows preview data is wide, height is respectively Width, Height, and zoom factor, centre coordinate are as above set, then:
Ystart＝y-Height/(k1*2)
Yend＝y+Height/(k1*2)
Xstart＝x-Width/(k1*2)
Xend＝x+Width/(k1*2)
Through as above calculating, needing to obtain the print data location parameter of preview, if exceed the print data scope according to its data area of this location parameter, the partial data that then goes beyond the scope uses the non-image data color of acquiescence to fill.
Zoom factor wherein defines as follows: data are not carried out convergent-divergent, and its zoom factor is 1; Data are amplified 2 times, and its zoom factor is 2; Data are dwindled 2 times, and its zoom factor is 0.5.
Only considered the integral multiple convergent-divergent at this, amplify 2 times as shown in Figure 7, dwindle 2 times as shown in Figure 8.
Pixel value computing formula when dwindling: (A1+A2+A3+A4)/4.Promptly four pixel values is average.
Use the present invention, can in digital oscilloscope and similar embedded device, realize having the printing function of Print Preview and print area selection.With an instantiation, Method of printing of the present invention is described below.
Use regional printing function
The steps include: that through button print area being set in print menu is screen; Print colors is set for colored; Pressing the menu printing key then can initiate to print.As shown in Figure 3, system at first obtains with stacking method according to print area and data and obtains print data receiving after software prints initiation command, but converts print data into the printer recognition data then and print.
Use the Print Preview function, its step is following:
1. send the Print Preview order through the actions menu button;
2. after system receives the Print Preview order of user's transmission, at first obtain the print area setting, be provided with according to the zone then and obtain video card figure layer data and be superimposed as print data;
3. obtain the acquiescence zoom factor, level, vertical shift;
4. calculate the Data Position information that is used for preview in the print data according to zoom factor, horizontal-shift and vertical shift;
5. according to the positional information of calculating gained and zoom factor structure preview data;
6. preview data is presented on the screen;
7. when carrying out the Print Preview function, screen display is as shown in Figure 9.Can operate amplification, dwindle, move horizontally this moment, the vertical moving button, correspondingly repeated execution of steps 4,5,6;
8. if then driving printer, the operation print button prints; If the operation X button then withdraws from preview state.
1 expression screen, 2 expression preview images, 3 expression actions menus among Fig. 9.
Claims (8)
1. one kind has that print in the zone and the Method of printing of Print Preview function, it is characterized in that may further comprise the steps:
1) regional printing step comprises:
1.1) receive the printing sign on that the user sends, start printing;
1.2) according to the print area that the user is provided with, from the video card data source, obtain the data set corresponding with print area and preserve parameter set metadata, the data set that obtains is carried out according to parameter set metadata figure is range upon range of to be added, generate print data and preservation;
1.3) print data is delivered to printer prints,
2) Print Preview step comprises:
2.1) receive user instruction, start preview operation;
2.2) according to the print area that the user is provided with, from the video card data source, obtain the data set corresponding with print area and preserve parameter set metadata, the data set that obtains is carried out according to parameter set metadata figure is range upon range of to be added, generate print data and preservation;
2.3) from print data, obtain the preview source data, the preview source data is converted into preview data and the preservation that meets the preview setting;
2.4) preview data is shown in preview interface;
Said step 1.2) and 2.2) in obtain data set and parametric technique thereof, may further comprise the steps according to zones of different:
If print area is a screen, then obtain video card physical map layer data and preservation at first from bottom to up successively, preserve simultaneously and respectively scheme the layer data parameter; Then according to coordinate and stack attribute according to physical map layer superpose the successively data of the same coordinate of different figure layers of order from bottom to up, the data of stack acquisition are print data,
If print area is a waveform, then obtain video card oscillogram layer data and preservation, can obtain print data.
2. the Method of printing with zone printing and Print Preview function as claimed in claim 1 is characterized in that:
Said step 1.2) and 2.2) in the print area that is provided with of user comprise screen area and wave regions, screen area is meant the zone that all show on screen, wave regions refers to only comprise in the print result waveform.
3. the Method of printing with zone printing and Print Preview function as claimed in claim 1 is characterized in that:
Said step 1.2) and 2.2) in the video card data source be meant video card physical map layer data; Video card has a plurality of physical map layers; Each figure layer carries different video datas; Be display data on the screen through the range upon range of show layers that adds generation of figure, its stack order is served as reasons the end upwards, and promptly Background From Layer is the bottom and the menu map layer is the superiors.
4. the Method of printing with zone printing and Print Preview function as claimed in claim 1 is characterized in that:
Said step 1.2) and 2.2) in data set be meant the data of from video card figure layer, obtaining according to print area.
5. the Method of printing with zone printing and Print Preview function as claimed in claim 1 is characterized in that:
Said step 1.2) with 2.2) in parameter set metadata comprise different video card figure layers with respect to upper left, the bottom right apex coordinate of the same coordinate system with scheme range upon range of additive attribute, the stack attribute comprise at least with or, XOR, covering.
6. the Method of printing with zone printing and Print Preview function as claimed in claim 1 is characterized in that:
When print area was screen, performing step was following:
Obtain each video card physical map layer data collection parameter, confirm the rectangle housing after the stack of figure layer data finishes;
According to rectangle frame coordinate and video card physical map layer, order is got same coordinate data and stack successively in each figure layer successively from bottom to up.
7. the Method of printing with zone printing and Print Preview function as claimed in claim 1 is characterized in that:
Step 2.3 during said Print Preview is realized) the preview setting described in comprises preview level, vertical moving and preview pantograph ratio at least;
Said step 2.3) method of from print data, obtaining preview data in comprises:
2.3.1) according to preview the positional information of calculating preview data with respect to print data is set;
2.3.2) successively corresponding print data is carried out convergent-divergent according to scaling according to the positional information that obtains, the data behind the convergent-divergent are preview data, said positional information comprises initial row, initial row and termination row, end column at least.
8. one kind has that print in the zone and the digital oscilloscope of Print Preview function, it is characterized in that comprising:
Front end signal conditioning unit, ADC, data processing unit, triggering processing unit, demonstration/control module, screen, keyboard and peripheral hardware; Wherein: the output of front end signal conditioning unit connects ADC and triggers processing unit; ADC is connected with the input of data processing unit; Trigger processing unit and be connected with the input of data processing unit, the output of data processing unit is delivered to screen through demonstration/control module, and keyboard and peripheral hardware connect demonstration/control module;
Signal is after nursing one's health through the front end numeral, and by the ADC sampling, ADC delivers to data processing unit with digitized signal and calculates, and data processing unit is delivered to screen display;
Described digital oscilloscope adopts claim 1,2,3,4,5,6 or 7 described methods to realize zone printing and Print Preview function.
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| CN103176015B (en) * | 2011-12-22 | 2016-04-20 | 北京普源精电科技有限公司 | A kind of waveform method for previewing, device and oscillograph |
| CN103323638A (en) * | 2013-07-05 | 2013-09-25 | 无锡商业职业技术学院 | Multifunctional digital scope meter |
| CN109032540A (en) * | 2018-08-01 | 2018-12-18 | 珠海奔图电子有限公司 | Method of printing, unit and computer readable storage medium |
| CN111323627B (en) * | 2020-02-27 | 2021-10-12 | 京东方科技集团股份有限公司 | Digital oscilloscope and oscillogram generation system |
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| US6262728B1 (en) * | 1998-11-03 | 2001-07-17 | Agilent Technologies, Inc. | System and method for annotating a graphical user interface display in a computer-based system |
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