JPH08314657A - Real-time printer device - Google Patents

Abstract

PURPOSE: To prevent position marks from overlapping with each other even if input waveforms are close to each other by printing the position marks at a certain interval. CONSTITUTION: When real-time printing is started, a printing control circuit 5 shifts the printing position of an input waveform from an image storage circuit 3 by 'offset 1' in a read (y)-axial direction according to the printing interval of position marks and determines the printing position of a position, mark at the printing point of time of the position mark. The printing control circuit 5 observes the position relation between position marks and prints the position mark at the determined printing position by controlling the printer device 6 unless the position marks are close to each other, but when the position marks are closed to each other, the printing position of the position mark of the 2nd input waveform is further shifted by 'offset 2' in an (x)-axial direction and the position is decided as the printing position of the position mark.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a real-time printing device provided in a waveform observing device such as an oscilloscope or a waveform recording device such as a recorder, and more particularly to a real-time printing device which prevents overlapping of position marks.

[0002]

2. Description of the Related Art A conventional real-time printing apparatus prints a plurality of input waveforms in real time and prints a position mark in the vicinity of the printed waveform in order to distinguish each input waveform.

FIG. 7 is an explanatory diagram showing a printing example of such a conventional real-time printing apparatus. "A" and "" in Figure 7
"C" is the first and second input waveforms, and "B" and "D" are position marks for distinguishing the first and second input waveforms.

The position marks "B" and "D" are shown in FIG.
It is printed above the first and second input waveforms at regular intervals shown in the middle "e".

As a result, even if the printing paper becomes long, the position marks "B" and "C" are arranged at regular intervals.
Is printed, the first input waveform "a" and the second
It is possible to distinguish the input waveform “C” of.

[0006]

However, when the first input waveform "a" and the second input waveform "c" approach each other, the position mark "b" is displayed as shown in "f" in FIG. '”
Also, there is a problem that "ni" is printed in an overlapping manner. Therefore, an object of the present invention is to realize a real-time printing apparatus capable of preventing the position marks from overlapping even if the input waveforms are close to each other.

[0007]

In order to achieve such an object, according to the first aspect of the present invention, a plurality of input waveforms are printed in real time, and the input waveforms are provided in the vicinity of the printed input waveforms. In a real-time printing apparatus that prints position marks for distinguishing each other from each other, a print control circuit that controls the print positions of a plurality of the input waveforms and separates the print positions of the position marks from each other by a certain amount, and this print control circuit And a printing device that prints the plurality of input waveforms and the position mark based on the output of 1.

According to a second aspect of the present invention, in a real-time printing apparatus that prints a plurality of input waveforms in real time and prints position marks for distinguishing the input waveforms from each other in the vicinity of the plurality of printed input waveforms. A print control circuit that controls the print positions of the plurality of input waveforms, separates the print positions of the position marks from each other by a predetermined distance, and also separates the print positions of the plurality of input waveforms from the print positions of the position marks by a predetermined distance. A printing device for printing the plurality of input waveforms and the position mark based on the output of the print control circuit.

[0009]

By printing the position marks with a certain distance therebetween, it is possible to prevent the position marks from overlapping even if the input waveforms are close to each other.

It is also possible to prevent the input waveform and the position mark from overlapping by separating the position marks from each other by a certain distance and determining the proximity of the input waveform and the position mark to shift the printing position of the position mark. You can

[0011]

The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a configuration block diagram showing an example of a digital oscilloscope equipped with a real-time printing apparatus according to the present invention. In FIG. 1, 1 is an A / D converter, 2 is a waveform storage circuit, 3 is an image storage circuit, 4 is a display device, 5 is a print control circuit, 6 is a printing device, 100 is an input waveform signal, 101 is a digital signal, 102 is a compressed signal. Here, 5 and 6 form a real-time printing device 50. Although a plurality of input waveform signals are not shown, for example,
It is configured to be selected by a multiplexer or the like and input to the A / D converter.

The selected input waveform signal 100 is input to the A / D converter 1, and the digital signal 101 output from the A / D converter 1 is connected to the waveform storage circuit 2. The output of the waveform storage circuit 2 is data-compressed by means (not shown) and then connected to the image storage circuit 3 as a compressed signal 102.

The output of the image storage circuit 3 is the display device 4
And the print control circuit 5, and the output of the print control circuit 5 is connected to the printing device 6.

The operation of the embodiment shown in FIG. 1 will be described with reference to FIGS. 2 and 3. 2 is a flow chart for explaining the position mark printing operation of the print control circuit 5, and FIG. 3 is an explanatory diagram showing a printing example of the real-time printing apparatus. However, the description of the printing of the input waveform is omitted because it is simple.

When real-time printing is started, the print control circuit 5 waits for the print time of the position mark based on the print interval of the position mark as shown in FIG.

As shown in FIG. 2B, the print control circuit 5
Image storage circuit 3 when the position mark is printed
Read the print position of the input waveform from the "offset" in the y-axis direction.
Determine the print position of the position mark by shifting by 1 "

That is, as shown in FIG. 3, the first input waveform "
The print position of the position mark "H" is the position shifted in the y-axis direction by the amount indicated by "B" with respect to "A". Similarly, the position indicated by "E" is shown for the second input waveform "D". The position that is shifted in the y-axis direction by a minute
Print position.

As shown in FIG. 2C, the print control circuit 5
Observes the positional relationship between the position marks "ha" and "f" and determines whether the position marks "ha" and "f" are close to each other.

If the position marks "H" and "H"
If they are not close to each other, the print control circuit 5 controls the printing device 6 to print the position marks "H" and "H" at the printing positions determined as described above, as shown in FIG. .

If the position marks "H" and "H"
When the two are close to each other, the print control circuit 5 further sets the print position of the position mark of the second input waveform determined as described above to "offset" in the x-axis direction as shown in (d) of FIG.
The position is printed by shifting the position by 2 ".

After that, as shown in FIG. 2E, the print control circuit 5 controls the printing device 6 so that the position marks "HA" and "HE" are located at the printing positions determined in FIG. 2D. Is printed.

That is, as shown in the portion "T" in FIG. 3, the position shifted in the x-axis direction by the amount indicated by "H" with respect to the position mark "H" of the first input waveform "A". Is the print position of the position mark "H" of the second input waveform "D".

As a result, by determining the proximity of the position marks and shifting the print position of the position marks, even if the first and second input waveforms "a" and "c" are close to each other, the position mark "h" It is possible to prevent overlapping of "" and "F".

FIG. 4 is an explanatory diagram showing a printing example of a real-time printing apparatus which is another embodiment. However, the description of the flowchart related to FIG. 4 is omitted for simplicity. In FIG. 4, when the position mark “B” for the first input waveform “A” and the position mark “D” for the second input waveform “C” are printed, x is the amount indicated by “E” in FIG.
The position that is always shifted in the axial direction is the second input waveform "C".
The position mark "D" is the printing position.

That is, the process of (d) is performed without making the determination of (c) in the flowchart shown in FIG. As a result, the position marks "B" and "D" are irrespective of the presence or absence of the proximity of the first and second input waveforms "A" and "C".
It is possible to prevent the position marks from overlapping each other by always separating them from each other by an interval shown by "e" in FIG.

FIG. 5 and FIG. 6 show an embodiment in which not only the position marks but also the overlapping of the position marks of the first input waveform and the second input waveform is prevented. FIG. 5 is a flowchart for explaining the position mark printing operation of the print control circuit 5, and FIG. 6 is an explanatory diagram showing a printing example of the real-time printing apparatus. However, the description of the printing of the input waveform is omitted because it is simple.

When real-time printing is started, the print control circuit 5 waits for the print time of the position mark based on the print interval of the position mark as shown in FIG.

As shown in FIG. 5B, the print control circuit 5
Image storage circuit 3 when the position mark is printed
Read the print position of the first input waveform from the
The offset 1 "is shifted to determine the print position of the first position mark.

Further, as shown in FIG. 5C, the print control circuit 5 reads the print position of the second input waveform from the image storage circuit 3 and reads "offset1" in the y-axis direction and "offs" in the x-axis direction.
The print position of the second position mark is determined by shifting by "et2".

That is, as shown in FIG. 6, the first input waveform "
The print position of the position mark "C" is the position shifted in the y-axis direction by the amount indicated by "B" with respect to "A". Similarly, it is shown as "E" for the second input waveform "D". The position shifted by the amount in the y-axis direction and shifted by the amount indicated by "F" in the x-axis direction is the print position of the position mark "T".

As shown in FIG. 5D, the print control circuit 5
Observes the positional relationship between the input waveform "a" and the position mark "t" and between the input waveform "d" and the position mark "c" to determine whether they are close to each other.

If the input waveform and the position mark are not close to each other, the print control circuit 5 controls the printing device 6 to move the position mark to the print position determined as described above, as shown in FIG. Print "C" and "T".

For example, when the first input waveform "a" and the position mark "to '" are close to each other as shown in the "H" portion in FIG. 6, printing is performed as shown in (e) in FIG. The control circuit 5 further sets the print position of the position mark for the second input waveform "D" determined as described above to "offs" in the y-axis direction.
Et3 "is shifted to set this as the print position of the position mark.

After that, as shown in FIG. 5F, the print control circuit 5 controls the printing device 6 to print the position marks "HA" and "TO" at the print position determined in (F). To do.

That is, as shown in the portion "H" in FIG. 6, a position further shifted in the y-axis direction by the amount "L" from the printing position of the position mark determined in FIG. 5C. The position mark “TO” of the second input waveform “D”
Print position.

As a result, the first and second input waveforms "a"
Regardless of the presence or absence of proximity of "d", the position marks are always separated by the distance shown in "f" in FIG. 6, and the print position of the position mark is shifted by judging the proximity of the input waveform and the position mark. As a result, even if the input waveforms "a" and "d" are close to each other, it is possible to prevent the input waveform and the position mark from overlapping.

Although the real-time printing apparatus used in the digital oscilloscope has been described as an example in the embodiment, the present invention is not limited to this, for example, an apparatus such as a recorder which needs to print the waveform in real time. The present invention can be diverted to.

In the description, two input waveforms are taken as an example, but the present invention is not limited to this, and a plurality of input waveforms may be used. For example, in the example shown in FIG. 2, the position marks of the third and fourth input waveforms may be shifted in the x-axis direction by “2 × offset2” and “3 × offset2”, respectively.

[0039]

As is apparent from the above description,
The present invention has the following effects. According to the first aspect of the present invention, by printing the position marks with a certain distance therebetween, it is possible to realize a real-time printing apparatus capable of preventing the position marks from overlapping even if the input waveforms are close to each other.

According to the second aspect of the invention, the input waveforms are separated from each other by separating the position marks from each other by a predetermined interval and determining the proximity of the input waveform and the position mark to shift the printing position of the position mark. A real-time printing apparatus capable of preventing the input waveform and the position mark from overlapping even when they are close to each other can be realized.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing an example of a digital oscilloscope including a real-time printing apparatus according to the present invention.

FIG. 2 is a flowchart illustrating a position mark printing operation of a print control unit.

FIG. 3 is an explanatory diagram illustrating a printing example of a real-time printing apparatus.

FIG. 4 is an explanatory diagram illustrating a printing example of a real-time printing apparatus that is another embodiment.

FIG. 5 is a flowchart illustrating a position mark printing operation of a print control unit.

FIG. 6 is an explanatory diagram illustrating a printing example of a real-time printing apparatus.

FIG. 7 is an explanatory diagram showing a printing example of a conventional real-time printing apparatus.

[Explanation of symbols]

 1 A / D converter 2 Waveform memory circuit 3 Image memory circuit 4 Display device 5 Printing control circuit 6 Printing device 50 Real-time printing device 100 Input waveform signal 101 Digital signal 102 Compressed signal

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G01R 13/28 9016-2G G01R 13/28 D 9016-2GE

Claims (2)

[Claims] 1. A real-time printing apparatus for printing a plurality of input waveforms in real time and printing position marks for distinguishing the input waveforms from each other in the vicinity of the plurality of printed input waveforms. A print control circuit for controlling the print positions of the waveforms and isolating the print positions of the position marks from each other for a certain period of time; and a printing device for printing the plurality of input waveforms and the position marks based on the output of the print control circuit. A real-time printing device characterized in that 2. A real-time printing apparatus which prints a plurality of input waveforms in real time and prints position marks for distinguishing the input waveforms from each other in the vicinity of the printed input waveforms. A print control circuit for controlling a print position of a waveform so that the print positions of the position marks are separated from each other by a predetermined distance, and the print positions of a plurality of the input waveforms and the print positions of the position marks are separated from each other by a constant distance. And a printing device for printing the plurality of input waveforms and the position mark based on the output of the real time printing device.