JP5593648B2 - Waveform display device - Google Patents

Description

  The present invention relates to a waveform display device, and more particularly to an improvement in a waveform display device in which a touch panel function is provided in a display unit.

  One type of waveform display device is one in which a touch panel function is provided on a display unit as shown in FIG. In FIG. 8, the A / D converter 1 converts an analog measurement waveform into a digital signal and outputs it to the data processing circuit 2.

  The data processing circuit 2 stores the measurement data of the analog measurement waveform converted into the digital signal in the acquisition memory 3, and generates the waveform data by plotting these measurement data in the time axis direction.

  The generated waveform data is transferred to the display processing circuit 4 and synthesized with a menu screen generated separately to generate a display screen. The display screen is stored in the display memory 5 and transferred to the display unit 6 provided with a touch panel function for display.

  The analog circuit portions of the A / D converter 1 and the data processing circuit 2 are controlled by the analog unit control circuit 7.

  The data processing circuit 2, the display processing circuit 4, and the analog unit control circuit 7 are controlled by the CPU 8 connected via the control bus CB.

  On the other hand, the CPU 8 is provided with a touch panel control unit 9, a keyboard control unit 10, and various input / output interfaces 11a to 11d such as USB, Ethernet (registered trademark), GPIB, and PC card.

  Regarding the time axis, voltage axis, display position, ON / OFF of calculation setting of the measurement waveform displayed on the display screen of the display unit 6, the touch panel control unit 9 and the keyboard control unit 10 are connected to a touch panel and an operation panel (not shown). A user request based on the operation of the provided keyboard is received, and processing corresponding to the request is executed.

  Patent Literature 1 describes a waveform display device configured to provide a touch panel on a display screen and directly input information related to a display waveform using a pen on the touch panel.

JP 2004-170292 A

  However, all of the conventional waveform display devices with a touch panel on the display screen are the ones in which the selection keys provided on the panel keyboard are simply transferred to the selection on the touch panel, and the functions of the touch panel are made effective. It has not been used.

  For example, on / off of waveform display, change of time axis, voltage axis, etc. can be changed only with a keyboard provided on the operation panel, and cannot be changed with a touch panel provided on the display screen.

  In addition, regarding the addition of computation and analysis processing, it is necessary to select from a panel keyboard or a dialog-type panel displayed on the display screen.

  Furthermore, regarding the display position change of the main waveform, zoom waveform, XY waveform, etc. and the waveform display on / off, only the panel keyboard can be operated, and it is not intended to be directly operated from the touch panel on the screen.

  The present invention solves these problems, and an object of the present invention is to provide a waveform display device in which the waveform displayed on the display unit can be directly operated from the touch panel, and the operability for the displayed waveform on the touch panel is greatly improved. There is to do.

In order to achieve such a problem, the invention according to claim 1 of the present invention is:
A touch panel function is provided on the display unit, and measurement waveform information (−xa, −ya, + xa, + ya) is added to touch information (tx, ty) for the measurement waveform output from the touch panel , and these are added ( In the waveform display device configured to determine whether or not the measurement waveform is touched in a range of tx−xa, ty + ya), (tx + xa, ty−ya) ,
The entire surface of the touch panel is divided into a plurality of regions so as not to overlap each other,
A register for storing information indicating the presence / absence of a touch is assigned to each of these areas and the waveform displayed on the display unit .

The invention according to claim 2 is the waveform display device according to claim 1,
A trigger condition for the waveform displayed on the display unit is set by directly operating from the touch panel .

  ADVANTAGE OF THE INVENTION According to this invention, the waveform displayed on a display part can be directly operated from a touch panel, and the waveform display apparatus in which the operativity with respect to the display waveform by a touch panel was improved significantly is obtained.

It is a block diagram which shows one Example of this invention. It is explanatory drawing which shows the specific example of FIG. It is operation | movement explanatory drawing of this invention. It is another operation explanatory view of the present invention. It is another operation explanatory view of the present invention. It is another operation explanatory view of the present invention. It is another operation explanatory view of the present invention. It is a block diagram which shows an example of the conventional waveform display apparatus.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention, and the same reference numerals are given to portions common to FIG. In FIG. 1, the touch panel provided in the display unit 6 is divided into a plurality of rectangular areas so that the areas do not overlap each other.

The touch panel control unit 9 is connected to the display processing circuit 4 instead of the CPU 8 of FIG. A comparison area 12b is provided in a part of the memory area used as the display memory 12a.

  FIG. 2 is a block diagram showing a specific example of the display processing circuit 4 used in FIG. The area register 4a stores i / o information indicating the presence or absence of touch in each area of the touch panel, and the i / o information stored in the area register 4a is input to the comparison unit 4e.

  The waveform data 4b generated by the data processing circuit 2 is input to the comparison unit 4e as trace data of each measurement channel, and the i / o information thereof is stored in one of the corresponding area registers 4a.

  Menu data 4c related to the display screen is also input to the comparison unit 4e, and the i / o information thereof is stored in one of the corresponding area registers 4a.

  The touch input 4d of the touch panel is acquired as status information from the touch panel control unit 9 in units of screen update rate (Vsync = 16 msec), and is input to one input terminal of the comparison unit 4e and the read modify write unit 4i.

  The character data 4j previously held is read into the other input terminal of the read-modify-write unit 4i, and the character data 4k added with status information from the touch panel is output from the output terminal and rewritten. Thus, the character / symbol information input by the user can be held in the internal memory.

  The comparison unit 4e receives the previous comparison result for each area from the previous register 4f and the previous status information for each area from the status register 4g. If the previous and current comparison results are different, An interrupt signal 4h is output to the CPU 8.

  When receiving the interrupt signal 4h, the CPU 8 refers to the area register 4 of the data processing circuit 2 via the control bus CB and confirms which part (area or waveform) of the touch panel is touched. When this confirmation is completed, the interrupt to the CPU 8 is released.

  The character / symbol information is cleared after a clear instruction from the CPU 8 or after a predetermined time set in advance.

  3A and 3B are diagrams for explaining the operation of the present invention, in which FIG. 3A shows an example of division of the touch panel, FIG. 3B shows an example of coordinates in region 1, and FIG.

  As shown in (A), the touch panel is divided into a relatively large rectangular first area 1 for displaying the measurement waveforms W1 and W2 and a lower portion of the area 1 at equal intervals in the horizontal direction so as not to overlap each other. The second region 2 is divided into the eighth region 8 having a relatively small rectangular shape. This is an image in which a key matrix is mapped on the entire touch panel so that adjacent keys do not overlap each other.

In the area register 4a corresponding to each of the areas 1 to 8, for example, the following data is set as an initial value.
Region 1 (xi1_1, yi1_1), (xi1_2, yi1_2)
Region 2 (xi2_1, yi2_1), (xi2_2, yi2_2)
Region 3 (xi3_1, yi3_1), (xi3_2, yi3_2)
Region 4 (xi4_1, yi4_1), (xi4_2, yi4_2)
Region 5 (xi5_1, yi5_1), (xi5_2, yi5_2)
Region 6 (xi6_1, yi6_1), (xi6_2, yi6_2)
Region 7 (xi7_1, yi7_1), (xi7_2, yi7_2)
Region 8 (xi8_1, yi8_1), (xi8_2, yi8_2)

The area register 4a corresponding to each of the areas 1 to 8 is a rectangular area for determining each area of the touch panel.
(Xi * _1, yi * _1), (xi * _2, yi * _2)
Specify as. In the case of region 1, as shown in (B),
(Xi1_1, yi1_1), (xi1_2, yi1_2)
Specified as

  Specifically, for each specified area, for example, the presence or absence of touch with the touch pen TP is determined based on the rectangular area for area determination specified by the area register 4a and the touch information input from the touch panel control unit 9. Here, as described above, the regions do not overlap each other.

  On the other hand, whether or not there is a touch on each measurement waveform displayed in the area 1 is determined in order to move the displayed measurement waveform to a desired position, but the user must touch the desired measurement waveform. If the measurement waveform cannot be moved, the user feels a lot of stress.

  In view of this, the touch information output from the touch panel is given a certain width to expand the range in which the measurement waveform can be touched, and the presence or absence of touch is determined based on the processing result.

  Specifically, -xa, -ya, + xa, + ya are added to the touch information (tx, ty) stored in the register and output from the touch panel, and these are added (tx-xa). , Ty + ya), (tx + xa, ty−ya), the presence / absence of touch on the measurement waveform is determined.

  By configuring in this way, the execution status of the operation requested by the user is displayed on the display screen composed of the waveform data 4b and the menu data 4c created by the display processing circuit 4 itself, and from the touch panel control unit 9. This can be confirmed by comparing the touch information and referring to the interrupt signal to the CPU 8 and the corresponding area of the internal register.

  In the case of the conventional configuration, the CPU 8 collects and compares the information of each area, and the display processing circuit 4 takes over, thereby improving the responsiveness of the user interface.

  In addition, since the character / symbol information displayed on the display screen is stored in the internal memory with the contents of the status information from the touch panel, various operations as described below are performed based on the touch operation on the touch panel. Control is possible.

  FIG. 4 is a diagram for explaining another operation of the present invention. (A) shows an example in which zoom waveforms 1 and 2 are displayed in the upper and lower areas of the display screen, and (B) shows the main screen in the upper area of the display screen. Is displayed, the XY1 waveform is displayed in the left area of the lower area, and the XY2 waveform is displayed in the right area.

  In (A), the zoom waveform 1 and the zoom waveform 2 can be switched up and down by moving the touch pen TP to the zoom waveform 2 region while touching the region of the zoom waveform 1. In (B), the XY1 waveform and the XY2 waveform can be switched to the left and right by moving the touch pen TP to the XY2 waveform area while touching the XY1 waveform area.

  FIG. 5 is another explanatory diagram of the operation of the present invention, in which (A) shows an example of moving the display waveform W in the vertical direction, and (B) shows an example of moving the display waveform W in the horizontal direction.

  In (A), by moving the touch pen TP up or down while touching the display waveform W, the display waveform W can be moved up or down to an arbitrary position. In (B), by moving the touch pen TP left or right while touching the display waveform W, the display waveform W can be moved to any position on the left or right.

  FIGS. 6A and 6B are diagrams for explaining another operation of the present invention. FIG. 6A shows an example of turning on / off the display of the display waveform W, and FIG. 6B shows an example of turning on / off the parameter display.

  In (A), the display waveform W can be turned off by touching a part of the display waveform W with the touch pen TP. For example, the display waveform W is canceled again by touching a cancel button (not shown). Can be displayed.

  On the other hand, in (B), by touching the touch pen TP to the parameter to be turned off among the displayed parameters, the display of the parameter can be turned off, and the display of the parameter turned off is displayed. By touching the touch pen TP again at the position, the parameters can be displayed again.

  By the way, in an oscilloscope, for example, a trigger is important as a condition for capturing a waveform. In particular, when an abnormal waveform is captured, a complicated trigger condition may be required. Conventionally, such complicated trigger conditions have been set using an interface using a panel keyboard or dialog settings in addition to a dedicated or general purpose knob. In order to do so, complicated operations have been required.

  The present invention can effectively cope with such problems. That is, for example, as shown in FIG. 7, the user can intuitively input and set necessary trigger conditions using the touch panel while confirming the waveform displayed on the display screen.

  In (A), a waveform W indicated by a broken line is an example of a waveform measured in the past. Based on these waveform examples, a region through which only an abnormal waveform to be captured passes is selected, and for example, a trigger region TZ as indicated by a diagonal line as a trigger condition is set with the touch pen TP. Thereby, as shown in (B), it is possible to reliably capture and display only the waveform W that has passed through the set trigger region TZ.

  Note that, except for the waveform W that has passed through the set trigger region TZ, it is possible to use reverse logic that reliably captures and displays other waveforms.

  In addition, since the comparison memory 12b shown in FIG. 1 can hold information from the touch panel, the user can add and display new information on the display screen by using the comparison memory 12b.

  Specifically, in FIG. 2, the read-modify-write unit 4i reads character data 4j from the comparison memory 12b and also reads information to be added that is newly input from the touch panel, and compares the updated information as character data 4k again. What is necessary is just to write back to the memory 12b. As a result, for example, a comment on the display waveform can be written and displayed on the display screen with the touch pen.

  As described above, according to the present invention, the waveform displayed on the display unit can be directly operated from the touch panel, and a waveform display device in which the operability with respect to the display waveform by the touch panel is greatly improved can be realized.

DESCRIPTION OF SYMBOLS 1 A / D converter 2 Data processing circuit 3 Acquisition memory 4 Display processing circuit 6 Display part 7 Analog part control circuit 8 CPU
9 Touch Panel Control Units 11a to 11d Input / Output Interface 12a Display Memory 12b Comparison Area

Claims (2)

A touch panel function is provided on the display unit, and measurement waveform information (−xa, −ya, + xa, + ya) is added to touch information (tx, ty) for the measurement waveform output from the touch panel , and these are added ( In the waveform display device configured to determine whether or not the measurement waveform is touched in a range of tx−xa, ty + ya), (tx + xa, ty−ya) ,
The entire surface of the touch panel is divided into a plurality of regions so as not to overlap each other,
A waveform display device is characterized in that a register for storing information indicating the presence or absence of a touch is assigned to each of the regions and the waveform displayed on the display unit. The waveform display device according to claim 1 , wherein a trigger condition for a waveform displayed on the display unit is set by directly operating from the touch panel .

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