JPH08146044A - Method for scrolling waveform of waveform recorder - Google Patents

Abstract

PURPOSE: To switch over a normal scroll mode, a low-speed scroll mode and a high-speed scroll mode simply by a pressing manner of a scroll key without using other keys. CONSTITUTION: A counter counts a time T while a scroll key is depressed. A first reference time T1 and a second reference time T2 (T1<T2) are set to be compared with the time counted by the counter. When the time T holds T<T1, the waveform is moved stepwise only a predetermined distance at every depression of the scroll key, that is, a normal scroll mode is set. When T1<T<T2 is held, the waveform is continuously moved at a predetermined low speed, i.e., a low-speed scroll mode is set. When T2<T is satisfied, the waveform is moved continuously at a higher speed than the low speed, i.e., a high-speed scroll mode is set. Moreover, in the low-speed scroll mode with the time T holding T1<T<T2, if the scroll key is depressed again, the high- speed scroll mode is started from that point to move the waveform at a high speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform scrolling method for a waveform recorder, and more particularly to a waveform scrolling method for a waveform recorder in which the scroll speed is automatically switched by pressing a scroll key. It is a thing.

[0002]

2. Description of the Related Art In a waveform recorder, it is possible to store the waveform data of an A / D converted input signal in a memory, and then appropriately read the waveform data from the memory and display the waveform on a display. It has become.

In this case, although it depends on the total recording length of the waveform, if the entire waveform is displayed on the limited display surface of the display, the waveform becomes too clogged and unobservable. Therefore, a part of the waveform is usually displayed and scrolled. By doing so, the desired waveform portion can be observed.

FIG. 5 shows a state in which a partial waveform W of the input waveform is displayed on the display and scroll keys 1a and 1b for scrolling the waveform W in the left and right directions. That is, pressing the scroll key 1a on one side moves the waveform W in the left direction, for example, and pressing the scroll key 1b on the other side moves the waveform W in the right direction, for example. In this case, the position display section 3 displays the position of the partial waveform W with respect to the entire waveform.

[0005]

As described above, by pressing one of the scroll keys 1a and 1b, the waveform W
Can be moved, but conventionally, the scroll is performed only while the scroll key 1a or 1b is pressed, and the speed is constant.

Therefore, in the case of a waveform having a long recording length, for example, in order to scroll from one end to the other, the scroll key must be kept pressed during that time, and
There is a problem that it takes time because the moving speed is constant.

There is also an automatic scroll function for automatically moving the waveform W even when the scroll key is released. In this case, for example, the subtraction key 2a and the addition key 2b are used together. I am trying. That is, by pressing the left scroll key 1a (or right scroll key 1b) and the subtraction key 2a (or addition key 2b) at the same time, the waveform W is automatically directed in the direction instructed even if the key is released thereafter. It is designed to move.

However, since two keys must be operated at the same time, there is an operational trouble. In addition, it is necessary to read the manual etc. and to know the operation in advance in order to make the auto scroll. Furthermore,
In relation to the scroll keys 1a and 1b, it is necessary to dispose the subtraction key 2a and the addition key 2b in the vicinity thereof, which causes a problem that the degree of freedom of the key arrangement is impaired.

As another scroll operation means,
It is known to use a so-called jog dial. In other words, with this jog dial, the scrolling direction is set according to the rotation direction (right or left), and the scroll speed is set according to the rotation angle. Not only requires a large space, but when the hand is released, the spring returns to the neutral position, so that there is a problem that the hand cannot be released from the jog dial during operation.

The present invention has been made in view of such a conventional situation, and an object thereof is to automatically switch the scroll speed by pressing the scroll key without using other keys together. Another object of the present invention is to provide a method for scrolling a waveform of the waveform recorder.

[0011]

In order to achieve the above object, the invention of claim 1 is an A / D converter for converting an analog input signal to be measured into digital waveform data, and a memory for storing the waveform data. A display that displays the input signal based on the waveform data read from the memory, and a CPU (central control unit) that controls writing and reading of the waveform data to and from the memory and display of the display. In a waveform scrolling method of a waveform recorder including a scroll key for scrolling a waveform displayed on the display in a predetermined direction, the CPU measures a time during which the scroll key is pressed. Counter and first reference time T1 and second reference that are compared with the time measured by the counter Between T2 (However, T1 <T2)
And the time T during which the scroll key is pressed is T <T1, the normal scroll mode is set in which the waveform is moved stepwise by a predetermined distance each time the scroll key is pressed. , T1 <T <T2, the low-speed scroll mode in which the waveform is continuously moved at a predetermined low speed is set, and when T2 <T, the waveform is continuously moved at a speed higher than the low speed. In addition to the high speed scroll mode, in the low speed scroll mode in which the time T during which the scroll key is pressed is T1 <T <T2, when the same scroll key is pressed again, the high speed scroll mode is set from that point. The feature is that the above waveform is moved at high speed.

Further, in the invention described in claim 2,
In the low speed scroll mode, the CPU clears the counter when the scroll key is once released (when not pressed) in the low speed scroll mode, and starts counting from the time when the scroll key is pressed again. hand,
Further, it is characterized in that the low speed scroll mode is switched to the high speed scroll mode under the condition that the elapsed time T is T <T1.

On the other hand, in the invention of claim 3, the scroll keys include a leftward movement key and a rightward movement key,
It is characterized in that the movement key in the opposite direction is used as a stop key.

[0014]

For example, assuming that the first reference time T1 is set to 1 second and the second reference time T2 is set to 2.5 seconds, the time from pressing the scroll key to releasing it is 1 at a time.
If it is less than a second, the normal scroll mode is used in which the waveform is moved stepwise by a predetermined distance each time the button is pressed.

On the other hand, when the scroll key is continuously pressed for 1 second or longer, the low speed scroll mode is set in which the waveform is continuously moved at a predetermined low speed even if the finger is released from the scroll key when 1 second has elapsed.

Further, if the scroll key is continuously pressed for 2.5 seconds or longer, a high-speed scroll mode in which the waveform is continuously moved at a speed higher than the above-mentioned low speed even if the finger is released from the scroll key after 2.5 seconds has elapsed. To be done.

When the scroll key is pressed again in the low speed scroll mode, the high speed scroll mode is switched from that point. In any scroll mode, the scroll mode is released by pressing the scroll key in the opposite direction.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic block diagram of this waveform recorder. According to this, the waveform recorder includes an A / D converter 11 for converting an analog input signal into digital waveform data, and the A / D-converted waveform data is stored in the memory 13 via the memory controller 12. .

The memory controller 12 is controlled by a CPU (central processing unit) 14, and the CPU 14 reads out waveform data from the memory 13 based on an instruction signal from a keyboard 15 as an operation unit and displays the waveform on a display 16.

The keyboard 15 is provided with a power key and function keys, but only the scroll keys 15a and 15b are shown in FIG. Therefore, a waveform scrolling method using the scroll keys 15a and 15b will be described with reference to the flowcharts of FIGS.

In this case, as the scroll mode, the normal scroll mode in which the waveform is moved stepwise each time the scroll key is pressed, the low speed scroll mode in which the waveform is continuously moved at a predetermined low speed, and the waveform from the above low speed are used. 3 modes of high-speed scroll mode for continuously moving at a high speed are prepared, and FLG (flag) as shown in Table 1 is set between each scroll key 15a, 15b and each scroll mode. ing.

[0022]

[Table 1] FIG. 3 is a key interrupt processing routine, and FIG. 4 is a screen processing routine of a display on which a waveform is displayed. In this embodiment, the key interrupt processing is set to be performed every 10 ms. For the convenience of drawing,
Although only the flowchart for right scrolling is shown in FIG. 4, substantially the same processing as that for right scrolling is performed only for changing the numerical value of FLG for left scrolling.

Also, in this embodiment, the counter is CP
The CPU 14 is built in the U14, and the CPU 14 is set with the first reference time T1 as the count value 100 and the second reference time T2 as the count value 250. That is, the first reference time T1 is 10 ms × 10
0 = 1 second, the second reference time T2 is 10 ms × 250 = 2.
It is set to 5 seconds.

The right scroll operation by the right scroll key 15b will be described with reference to the flowchart of FIG. First, the FLG is set to "0" in the normal scroll mode when the waveform recorder is started up. Then, in step 301, it is determined every 10 ms whether any key of the keyboard 15 has been pressed. If NO, the CPU waits until a key is pressed with the counter kept at "0" at step 302. If the key is pressed and the answer is YES, step 3
After adding “1” to the counter in 03, step 304
Then, it is determined whether the right scroll key 15b (the left scroll key 15a at the time of left scroll) is pressed.

If it is determined that the right scroll key 15b has been pressed, at step 305, the low speed (FL
It is determined whether G = 1) and counter <100.
In this case, since FLG = 0 and the counter is “1”, the flow goes to the NO side, and at step 306, the low speed (F
It is determined whether LG = 1). NO because FLG = 0
Going to the side, the next step 307 determines whether it is high speed (FLG = 2). Still, since FLG = 0, NO
To the side, and in step 308, press F in normal scroll mode.
LG = 0 is left unchanged. Counter in step 309>
100 is judged. In this case, since the counter is "1", the counter is passed to the NO side, and in step 310, it is determined whether the counter> 250. Similarly, since the counter is "1", the process goes to the NO side.

In this way, after FLG = 0 is set, the flow shifts to the screen processing routine of FIG. In this screen processing routine, since FLG = 0, the waveform is moved to the right by a predetermined distance corresponding to one push of the right scroll key 15b in step 401, and in the next step 402, high speed (FLG = 2). ) Is determined. In this case, since FLG = 0, the process goes to the NO side, and step 40
After waiting for a predetermined time in the 3 (Wait) loop,
Normal scroll mode (FLG = 0) in step 404
Is determined. Since FLG = 0, the screen processing routine ends, that is, the scroll operation ends.

As described above, by pressing the right scroll key 15b finely within the range where the counter does not reach 100 (1 second), steps 303 to 310 of the key interruption processing are performed.
Is repeatedly executed to set FLG = 0, and the waveform is scrolled stepwise in the screen processing routine accordingly. Note that, each time the scroll key is released, the counter is cleared to "0" in step 302, so that even if the scroll key is finely pressed as described above, the numerical value of the counter is not accumulated.

On the other hand, if the counter exceeds 100 by continuously pressing the right scroll key 15b, step 3
It is determined to be YES in 09, and in step 309a, FLG = 1 which means the low speed scroll mode is set. In response to this, steps 401 to 404 of the screen processing routine are repeatedly executed, and the waveform is continuously scrolled rightward in the low speed scroll mode. In this case, the scroll speed is set by the wait time of the Wait loop in step 403.

Note that once FLG is set to "1" as described above, even if the finger is released from the scroll key thereafter, that is, the counter is set to "0" at step 302.
Even if it is cleared to 0, unless FLG = 0, steps 401 to 404 of the screen processing routine are repeatedly executed, so that the waveform is automatically scrolled into the auto-scroll state.

Further, when the right scroll key 15b is kept pressed and the counter exceeds 250, YES is determined in the step 310 and FLG = 2 which means the high speed scroll mode is set in the step 310a. As a result, steps 401 and 402 of the screen processing routine are repeatedly executed, and the waveform does not pass through the Wait loop of step 403, so that the waveform is continuously scrolled rightward at high speed. Even in this case, even if the finger is released from the scroll key, the waveform is automatically scrolled as long as FLG = 0 is not satisfied.

By the way, in the low speed scroll mode of FLG = 1, the right scroll key 15b is once released and pressed again, or in the automatic scroll state, it is switched to the high speed scroll mode from that point. That is, in any case, the counter is cleared to "0" when the scroll key is released,
By pressing it again, "1" is added to the counter, so the judgment condition of step 305 (FLG = 1, and
Since it matches the counter <100), FLG = meaning the high-speed scroll mode in step 305a.
2

If it is determined in step 304 of the key interruption processing routine that the scroll key is not pressed, the counter is set to "0" in step 311, and then the stop key is pressed in step 312. If YES, then in step 313 FLG =
After setting to 0, the process proceeds to the screen processing routine, and finally the waveform is moved by one time and the process ends. On the other hand, if it is determined in step 312 that a key other than the stop key has been pressed, then in step 314 the processing corresponding to that key is executed.

In the above embodiment, the stop key is used to stop scrolling. However, by pressing the scroll key in the opposite direction, in this example, the left scroll key 15a (right scroll key 15b when left scrolling), scrolling is performed. It may be stopped.

Further, as described above, FIG. 3 shows only the operation steps for right scrolling, but the same operation steps are prepared for left scrolling as well, except for steps 305a and 305a. FLG = 4 is set in step 310a, and step 30
In this case, FLG = 3 in 9a, and in the screen processing routine of FIG.
Steps 40 of left scroll processing similar to 1 to 404
5 to 408 are executed.

[0035]

As described above, according to the present invention,
Normal scroll mode, in which the waveform is moved stepwise (stepwise) each time the scroll key is pressed by simply pressing the scroll key without using other keys, and the waveform is continuously operated at a predetermined low speed. It is possible to switch the low-speed scroll mode for moving to and the high-speed scroll mode for continuously moving the waveform at a speed higher than the low speed.

Further, in the low speed scroll mode and the high speed scroll mode, even if the finger is released from the scroll key, the waveform is automatically scrolled so that the waveform is automatically scrolled. Or, the troublesome operation such as having to use other keys together is eliminated.

Further, as the scroll key, only a pair of scroll keys that are originally moved to the left and right are required, and it is not necessary to use other keys together. Therefore, the degree of freedom in designing the key arrangement of the keyboard (operation unit) is high. Is increased,
And the like.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing the configuration of a waveform recorder applied to the present invention.

FIG. 2 is a schematic diagram showing scroll keys provided on the keyboard of the waveform recorder.

FIG. 3 is a flowchart showing an interrupt processing routine of a scroll key according to the present invention.

FIG. 4 is a flowchart showing a screen scroll processing routine of the present invention.

FIG. 5 is a schematic diagram for explaining a conventional waveform scrolling state.

[Explanation of symbols]

 11 A / D Converter 12 Memory Controller 13 Memory 14 CPU 15 Keyboard (Operating Section) 15a Left Scroll Key 15b Right Scroll Key 16 Display

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Miyazawa 81 Sakurajima, Koizumi, Ueda-shi, Nagano Hioki Electric Co., Ltd. (72) Inventor Shuichi Takahashi 81, Koizumi, Koizumi, Ueda, Nagano Hioki Electric Co., Ltd. In-house (72) Inventor Toshiaki Fusegawa 1-3-3 Uchiyuki-cho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. (72) Eiji Kogure 1-3-1 Uchiyuki-cho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. Within

Claims (3)

[Claims] 1. An A / D converter for converting an analog input signal to be measured into digital waveform data, a memory for storing the waveform data, and the input signal based on the waveform data read from the memory. A display for displaying, and writing the waveform data to the memory,
A waveform scrolling method for a waveform recorder including a CPU (central control unit) for controlling readout and display on the display, and an operation unit including scroll keys for scrolling the waveform displayed on the display in a predetermined direction. In the above, the CPU has a counter for counting the time when the scroll key is pressed, and a first reference time T1 and a second reference time T2 (where T1 <T2) to be compared with the time counted by the counter. Then
When the time T during which the scroll key is pressed is T <T1, a normal scroll mode in which the waveform is stepwise moved by a predetermined distance each time the scroll key is pressed is set, and when T1 <T <T2. Is a low-speed scroll mode that continuously moves the above waveform at a predetermined low speed,
When T2 <T, the high-speed scroll mode in which the waveform is continuously moved at a speed higher than the low speed is set, and the time T during which the scroll key is pressed is T1.
In the low speed scroll mode where <T <T2, if the same scroll key is pressed again, the waveform is moved at high speed in the high speed scroll mode from that point. Waveform scrolling method. 2. The CPU clears the counter when the scroll key is once released (when the scroll key is not pressed) in the low speed scroll mode, and starts timing from the time when the scroll key is pressed again. 2. The waveform scroll of the waveform recorder according to claim 1, wherein the scroll mode is switched from the low speed scroll mode to the high speed scroll mode under the condition that the elapsed time T is T <T1. Method. 3. The scroll key includes a leftward movement key and a rightward movement key, and the movement key in the opposite direction is used as a stop key.
Waveform scrolling method of the waveform recorder described in.