JP2571911Y2 - Waveform display recording device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform observation device such as a digital oscilloscope, and more particularly, to an improvement in a display waveform recording means.

[0002]

2. Description of the Related Art In a waveform display device such as a digital oscilloscope, a method of recording a display screen includes a method of photographing a display screen, a method of recording display screen data as a file on a magnetic recording device such as a floppy disk, and the like. In addition, a method of recording on paper using a printer or a plotter and the like are widely used. On the other hand, with respect to the horizontal axis display resolution of the horizontal axis of the display screen, the number of waveform data actually measured tends to increase in order to improve the measurement resolution. For this reason, the waveform displayed on the screen is often compressed and displayed so as not to lose the information of the measurement data as much as possible. By displaying in a compressed manner, the entire image of the measured waveform can be grasped. However, it may be necessary to display the actual measurement data. In order to satisfy this need, a part of the compressed display waveform is enlarged and displayed.

At this time, there is a long copy method for recording the enlarged waveform displayed on the screen as a temporally continuous waveform. This operation will be described. First, compress On the screen where the compressed waveform is displayed, Set the range to record on the recorded waveform. Based on this setting, an enlarged display of the displayed waveform is performed,
Further, a hard copy of the screen is made. At this time, when the set range is enlarged and recorded, the range to be recorded in the hard copy may not be included in one display screen. At this time, first, a hard copy for one display screen is made, and further, the position of the waveform enlargement is updated, and the hard copy is made continuously. Such an operation is called a long copy.

FIG. 6 is a block diagram showing an example of the above-mentioned waveform display recording apparatus. The measured waveform signal applied to the input terminal 11 is converted into a digital signal by the analog / digital converter 12 and stored in the memory 13 sequentially. further,
The necessary portion of the memory 13 is transferred to the data processing circuit 15 by the data capture control circuit 14. The data further compressed or expanded by the data processing circuit 15 is displayed on the display device 17 via the display control circuit 16.
On the other hand, from the display control circuit 16 to the hard copy control circuit 18
Is converted into output data by the hard copy control circuit 18 and output by the hard copy output device 19. When performing waveform recording by long copy, first, the microprocessor 10 supplies control signals to the data acquisition control circuit 14 and the data processing circuit 15, and the first recording screen is output to the display control circuit device 16. When the microprocessor 10 detects the end of the screen output, it immediately starts the operation for outputting the second recording screen and performs the same control as the control for outputting the first recording screen. The same control range is repeated until the recording range ends. At this time, automatically recording starts when a selective one Dan hardcopy waveform is printed on the recording paper.

[0005]

Therefore, there arises a problem that recording paper is used more than necessary. The present invention solves this problem, and in long copy, which is a method of recording enlarged display waveforms, when the recording range is specified, the number of recording papers is displayed on the screen in advance to ensure the accuracy of the range specification, and the recording paper To reduce waste.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a waveform display device having a circuit for controlling display of waveform data and a circuit for controlling hard copy output, and setting a recording format of a waveform for performing hard copy. Hard copy setting means for performing, based on the setting from the hard copy setting means, a data number management block that manages the number of data of the waveform to be hard copied, based on the setting from the hard copy setting means, A compression / expansion rate management block that manages a compression rate or an expansion rate of a waveform to be hard-copied; A display setting holding unit for holding a setting of a display screen on which the waveform is displayed when performing hard copy; Block, a compression / expansion ratio management block, a recording range storage block, and an operation block for inputting data from the display setting holding unit and calculating the number of recording sheets required for hard copy, and data from the operation block. A display data creation block for creating display data based on the display data, a hard copy data display means for displaying data from the display data creation block, and data displayed on the hard copy data display means. A hard copy execution control input means for executing a hard copy based on the data from the hard copy control input means, the operation block and the display data creation block, and output a control signal for performing a hard copy operation An execution control block is provided so that the number of recording papers is displayed on the screen in advance. It is a waveform display recording apparatus characterized.

[0007]

By calculating the number of sheets required for waveform recording and displaying it on the screen, it is possible to reduce the waste of recording sheets.

[0008]

1 shows a basic configuration of the present invention. In the figure, reference numeral 1 denotes a hard copy setting unit for setting a recording format of a waveform to be hard copied. Reference numeral 2 denotes a hard copy control input unit for confirming data displayed on the hard copy data display unit and executing a hard copy based on the data. A data number management block 3 manages the number of waveform data to be hard copied based on the setting from the hard copy setting unit 1. Reference numeral 4 denotes a compression / expansion rate management block that manages a compression rate or an expansion rate of a waveform to be hard copied based on the setting from the hard copy setting unit 1. Reference numeral 5 denotes a recording range storage block for storing a range of a waveform to be hard copied based on the setting from the hard copy setting unit 1. Reference numeral 6 denotes a display setting holding unit for holding the setting of the display screen on which the waveform is displayed at the time of hard copy. 7
Is an operation block for inputting data from the data number management block 3, the compression / enlargement ratio management block 4, the recording range storage block 5, and the display setting holding means 6, and calculating the number of recording sheets required for hard copy. 8 is a display data creation block for creating display data based on the data from the operation block. Reference numeral 9 denotes an execution control block that inputs data from the hard copy execution control input means 2, the operation block, and the display data creation block, and outputs a control signal for performing a hard copy operation. Reference numeral 10 denotes a hard copy data display unit for displaying data from the display data creation block 8. FIG. 6 shows an output signal from the execution control block 9.
The waveform display and recording device shown in FIG.

The operation in such a configuration will be described. The display screen having a display resolution in the horizontal axis direction (such as vertical raster is present 501) as shown in FIG. 2, when the magnification K, a larger recording range is R, the recording sheet number P _OUT
Is given by: P _OUT = INT (K · R / 501) Here, INT (A) is an arithmetic expression that gives the integer part of A, and the decimal part is rounded up. As a specific example, in the enlarged recording range as shown in FIG.
A case where the magnification is 20 times will be described. FIG. 4 shows the recording result at this time. The number of recording papers P _{OUT at} this time is
From the equation, P _OUT = INT (20 × 100/501) = 4. That is, when the range shown in FIG. 3 (the range from raster 100 to raster 199) is selected at an enlargement factor of 20, four recording sheets are required as shown in FIG.

Further, an attempt is made to output a hard copy by enlarging the range shown in FIG. 3 to 1000 times. The recording paper at this time can be obtained by similarly substituting into the equation. In this case, 200 sheets are required. This 200
Result that sheets are displayed in the upper right of the display screen of the recording range is specified as shown in the FIG. In such a case, it is possible to set the display range or the enlargement ratio again.
When the setting is completed again, the display of FIG. 5 shows the required number of sheets with the new setting. In this way, careless use of the recording paper can be prevented.

[0011]

As described in detail above, by calculating and displaying the required number of recording sheets before executing a hard copy, the user can select whether or not to execute a hard copy, thereby saving recording sheets. become.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of the present invention.

FIG. 2 is an explanatory view of the present invention.

FIG. 3 is an explanatory view of the present invention.

FIG. 4 is an explanatory view of the present invention.

FIG. 5 is an explanatory view of the present invention.

FIG. 6 is a configuration diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hard copy output setting means 2 Hard copy execution control input means 3 Data number management block 4 Compression / expansion rate management block 5 Recording range storage block 6 Display setting holding means 7 Operation block 8 Display data creation block 9 Execution control block 10 Hard copy Display means

Claims (1)

(57) [Scope of request for utility model registration] An input measurement waveform is displayed on a display screen.
To a waveform display recording device that outputs
The data of the measured waveform displayed on the display screen.
Data number management means for managing the number, and compression of the measured waveform
Compression / expansion rate management means for managing an expansion rate;
Recording range storage means for storing range data of the waveform to be copied
And the number of data, the compression / expansion rate, and the range data.
The number of recording sheets required for the hard copy based on the
Calculating means for calculating the number of recording papers on the display screen by the hard copy.
Waveform characterized by being displayed prior to
Display recording device.