JP2012173242A - Waveform display device, and waveform display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability when a signal waveform is scroll-displayed by a pointing operation to a scroll bar.SOLUTION: The waveform display device includes: a touch panel 28 allowing a pointing operation to a scroll bar Ba displayed on a display section 13; and a display control section that executes a scrolling process for scroll-displaying a partial signal waveform W2 on the display section 13 according to the pointing operation. When a drag operation from a first position Pf1 to a second position Ps1 within the scroll bar Ba in the length direction of the scroll bar Ba is performed as the pointing operation, and subsequently, a depressing operation in the second position Ps1 is continuously performed as the pointing operation, the display control section executes the scrolling process only during the execution of the depressing operation and, when the depressing operation is finished, stops the scrolling process.

Description

  The present invention relates to a waveform display device and a waveform display method for scrolling and displaying a signal waveform on a display unit.

  As this type of waveform display device, a waveform display device disclosed by the applicant in Japanese Patent Application Laid-Open No. 2007-187610 is known. The waveform display device includes a display control unit, an operation unit, a display unit, and the like, and is configured to display a signal waveform on the display unit. Further, in this waveform display device, the display control unit displays the scroll bar and the scroll box on the display screen of the display unit, and displays a pointer that can be moved in the display screen by the operation of the operation unit. The display control unit scrolls and displays the signal waveform when the pointer is moved on the scroll box and dragged.

JP 2007-187610 A (page 6, Fig. 1-2)

  However, the above waveform display device has the following problems to be improved. That is, in the above waveform display device, the signal waveform is scroll-displayed by dragging the scroll box in the scroll bar. In this case, the length of the scroll bar corresponds to the entire length (time length) of the signal waveform. For this reason, when the entire length of the signal waveform is long and the length of the signal waveform displayed in the display screen during scroll display (the time length of the signal waveform for one screen) is shorter than the entire length. The signal waveform is scrolled greatly by dragging the scroll box slightly. For this reason, the above waveform display device may have a slightly poor operability in a usage pattern in which a desired portion is searched from the entire signal waveform by scroll-displaying the signal waveform. Improvement is desired.

  The present invention has been made in view of such a problem to be improved, and provides a waveform display device and a waveform display method capable of improving the operability when a signal waveform is scroll-displayed by a pointing operation on a scroll bar. Main purpose.

  In order to achieve the above object, the waveform display device according to claim 1 is configured such that a pointing operation unit capable of a pointing operation with respect to a scroll display scroll bar displayed on the display unit, and a display unit corresponding to the pointing operation. And a display control unit that executes scroll processing for scrolling display of the signal waveform, wherein the display control unit is configured to move the scroll bar from a first position to a second position in the scroll bar. When the drag operation along the length direction is performed as the pointing operation, and then the pressing operation is continuously performed as the pointing operation at the second position, the pressing operation is performed only while the pressing operation is performed. The scroll process is executed, and the scroll process is stopped when the pressing operation is finished.

  The waveform display device according to claim 2 is the waveform display device according to claim 1, wherein the display control unit follows a drag operation from the first position to the second position as the pointing operation. After the drag operation from the second position as the pointing operation to an arbitrary third position outside the scroll bar is performed, when the pressing operation is finished at the third position, the scroll process is continued. The scroll process is stopped when a pressing operation is performed at an arbitrary position on the display unit while the scroll process is being executed.

  The waveform display device according to claim 3 is the waveform display device according to claim 1 or 2, wherein the display control unit moves from the first position to the second position when the drag operation is performed. The scroll process is executed in a scroll direction associated in advance with the direction of heading.

  The waveform display device according to claim 4 is the waveform display device according to any one of claims 1 to 3, wherein the display control unit is configured to perform the drag operation from the first position to the second position. The scroll process is executed at a scroll speed that is previously associated with the length from the first position to the second position along the length direction of the scroll bar.

  The waveform display device according to claim 5 is the waveform display device according to any one of claims 1 to 4, wherein the display control unit is configured such that the signal waveform displayed on the display unit is the signal waveform. A scroll box indicating which part of the whole corresponds to the scroll bar is displayed in the scroll bar, and the scroll box is slid in the scroll bar in conjunction with the scroll display of the signal waveform in the scroll process.

  The waveform display device according to claim 6 is the waveform display device according to any one of claims 1 to 5, wherein the pointing operation unit has light transmittance disposed on a display surface of the display unit. It is configured with a touch panel.

  The waveform display method according to claim 7 is a waveform display method for executing scroll processing for scrolling and displaying a signal waveform on the display unit in response to a pointing operation on a scroll bar for scroll display displayed on the display unit. Then, a drag operation along the length direction of the scroll bar from the first position to the second position in the scroll bar is performed as the pointing operation, and subsequently, a pressing operation is performed at the second position. When the operation is continuously performed, the scroll process is executed only while the pressing operation is performed, and the scroll process is stopped when the pressing operation is completed.

  In the waveform display device according to claim 1, and the waveform display method according to claim 7, a drag operation along the length direction of the scroll bar from the first position to the second position in the scroll bar is performed as a pointing operation. Then, when the pressing operation is continuously performed as the pointing operation at the second position, the scrolling process is executed only while the pressing operation is being performed, and the scrolling process is stopped when the pressing operation is completed. To do. For this reason, in this waveform display device and waveform display method, the length of the signal waveform (time length of the signal waveform for one screen) displayed on the display screen of the display unit is the total length (time length) of the signal waveform. Unlike the conventional waveform display device, which is shorter than the conventional waveform display device in which the signal waveform is greatly scrolled only by dragging the scroll box slightly, the second position is not dragged in the scroll bar. The scroll display can be continued only while the pressing operation is continued only by continuing the pressing operation. Therefore, according to the waveform display device and the waveform display method, an operation in a usage mode in which a partial signal waveform is scroll-displayed by a pointing operation on the scroll bar and a desired portion is searched from a signal waveform having a long time length. Can be sufficiently improved.

  In the waveform display device according to claim 2, following the drag operation from the first position to the second position as the pointing operation, from the second position as the pointing operation to an arbitrary third position outside the scroll bar. When the pressing operation is finished at the third position after the drag operation is performed, the scroll process is continuously executed. Therefore, in this waveform display device, scroll display can be continued without performing an operation on the operation unit. For example, when observing a signal waveform while scrolling the signal waveform, both hands can be freely used. As a result, it is possible to sufficiently improve the convenience in such usage. Further, when the pressing operation is performed at an arbitrary position on the display unit while the scroll process is continued, the scroll process is stopped. Therefore, in this waveform display device, it is not always necessary to perform a pressing operation in the scroll bar, so that the scroll display can be stopped reliably and easily.

  According to the waveform display device of the third aspect, when the drag operation is performed, the scroll process is executed with the scroll direction previously associated with the direction from the first position toward the second position. By doing this, the signal waveform can be scrolled and displayed in either the direction in which the time elapses or the direction in which the time goes back simply by changing the direction from the first position to the second position and performing a drag operation. As a result, the operability when searching for a desired portion in the signal waveform can be further improved.

  In the waveform display device according to claim 4, the length from the first position to the second position along the length direction of the scroll bar in the drag operation from the first position to the second position is previously supported. Scroll processing is executed at the attached scrolling speed. Therefore, according to this waveform display device, for example, the longer the length, the faster the scroll speed is associated, and the shorter the length, the slower the scroll speed is associated. When the signal waveform is scrolled and a desired part of the signal waveform is searched for a long time, a drag operation is performed so that the length from the first position to the second position is increased. By scrolling and displaying the signal waveform at a high speed, it is possible to quickly find the desired portion. Further, when observing the signal waveform while performing the scroll display, the signal waveform is scrolled and displayed at a low speed by performing a drag operation so that the length from the first position to the second position is shortened. The details of the waveform can be observed in detail. Therefore, according to this waveform display device, the convenience in such usage can be sufficiently improved.

  According to the waveform display device of the fifth aspect, the scroll box indicating which part of the entire signal waveform the signal waveform displayed on the display unit corresponds to is displayed in the scroll bar, and in the scroll processing, By sliding the scroll box in the scroll bar in conjunction with the scroll display of the signal waveform, it is possible to recognize at a glance which part of the signal waveform is displayed. It is possible to sufficiently improve the convenience when searching for the part.

  According to the waveform display device of the sixth aspect of the present invention, the pointing operation unit is configured by including the light-transmissive touch panel disposed on the display surface of the display unit, thereby facing the scroll bar image on the touch panel. Since the pointing operation can be performed by a touch operation with a fingertip or a touch pen on the portion to be performed, the operability can be further improved.

1 is a front view of a waveform display device 1. FIG. 1 is a configuration diagram showing a configuration of a waveform display device 1. FIG. It is a display screen figure of partial signal waveform W2, scroll bar Ba, and scroll box Bb. It is the 1st explanatory view explaining a waveform display method. It is the 2nd explanatory view explaining a waveform display method. It is the 3rd explanatory view explaining a waveform display method. It is the 4th explanatory view explaining a waveform display method. It is a 5th explanatory view explaining a waveform display method.

  Hereinafter, embodiments of a waveform display device and a waveform display method will be described with reference to the accompanying drawings.

  First, the configuration of the waveform display device 1 will be described with reference to the drawings. As shown in FIG. 1 and FIG. 2, the waveform display device 1 shown in FIG. 1 includes a signal processing unit 11, a recording unit 12, a display unit 13, an operation unit 14, and a control unit 15, and an input electric signal Se (an example) Are displayed as a whole signal waveform W1 (see FIG. 1) and a partial signal waveform W2 (see FIG. 3; hereinafter, also referred to as “signal waveform W” when the whole signal waveform W1 and the partial signal waveform W2 are not distinguished). It is configured to be possible.

  Under the control of the control unit 15, the signal processing unit 11 receives the electric signal Se, performs signal processing (sampling processing), and outputs waveform data Dw. The recording unit 12 records the waveform data Dw output from the signal processing unit 11 under the control of the control unit 15. The display unit 13 is configured by a liquid crystal panel as an example, and the signal waveform W of the electric signal Se, a scroll bar Ba for scroll display (see FIG. 3), and a scroll box Bb (see FIG. 3) under the control of the control unit 15. Display).

  As shown in FIG. 1, the operation unit 14 includes a power switch 21, a mode switching key 22, a recording start key 23, a recording end key 24, a waveform display key 25, an entire waveform display key 26, a partial waveform display key 27, and a touch panel. 28, and an operation signal So (see FIG. 2) is output when an operation is performed on them. In this case, the touch panel 28 includes a transparent electrode and is disposed on the display surface (front surface) of the display unit 13 as illustrated in FIG. The touch panel 28 functions as a pointing operation unit, and performs a pointing operation (a drag operation or a press operation to be described later) by a touch operation (press operation) with a fingertip 50 (see FIG. 4) or a touch pen (not shown) on the operation surface (front surface). It is possible to do.

  The control unit 15 executes control on various units constituting the waveform display device 1 and various processes according to the operation signal So output from the operation unit 14. Specifically, the control unit 15 controls the signal processing by the signal processing unit 11 and records the waveform data Dw in the recording unit 12 and reads out the waveform data Dw from the recording unit 12.

  Further, the control unit 15 functions as a display control unit, executes a full waveform display process and a partial waveform display process to be described later, controls the display unit 13, and stops displaying and displaying the whole signal waveform W1 and the partial signal waveform W2. To control. In this case, the control unit 15 causes the display unit 13 to display the scroll bar Ba and the scroll box Bb in the partial waveform display process (when displaying the partial signal waveform W2). In the partial waveform display process, the control unit 15 executes a scroll process for scrolling and displaying the partial signal waveform W2 in accordance with a pointing operation on the scroll bar Ba.

  Next, a waveform display method for displaying the signal waveform W of the electric signal Se using the waveform display device 1 and the operation of the waveform display device 1 at that time will be described with reference to the drawings.

  First, the mode switching key 22 (see FIG. 1) of the operation unit 14 is operated to switch the waveform display device 1 to the recording mode, and then the recording start key 23 (see FIG. 1) of the operation unit 14 is operated. At this time, the control unit 15 controls the signal processing unit 11 according to the operation signal So output from the operation unit 14, and the signal processing unit 11 controls the electric signal Se (for example, a voltage signal as controlled by the control unit 15. ) To generate waveform data Dw generated by signal processing.

  Next, the control unit 15 causes the recording unit 12 to record the waveform data Dw output from the signal processing unit 11. Subsequently, when the recording of the electric signal Se is ended, the recording end key 24 of the operation unit 14 is operated. In response to this, the control unit 15 controls the signal processing unit 11 to stop the signal processing, and also controls the recording unit 12 to end the recording of the waveform data Dw.

  Next, the signal waveform W of the electric signal Se based on the waveform data Dw recorded in the recording unit 12 is displayed. Specifically, the waveform display device 1 is switched to the waveform display mode by operating the mode switching key 22 (see FIG. 1) of the operation unit 14. Next, for example, when displaying the entire signal waveform W1 of the electric signal Se from the recording start time point to the recording end time point, the entire waveform display key 26 (see the figure) of the operation unit 14 is operated. At this time, the control unit 15 executes the entire waveform display process according to the operation signal So output from the operation unit 14. In this all waveform display process, the control unit 15 reads the waveform data Dw from the recording unit 12. Subsequently, the control unit 15 controls the display unit 13 to display the entire signal waveform W1 based on the waveform data Dw as shown in FIG.

  Next, when displaying the partial signal waveform W2 obtained by enlarging a part of the entire signal waveform W1, the partial waveform display key 27 (see FIG. 1) of the operation unit 14 is operated. At this time, the control unit 15 executes a partial waveform display process according to the operation signal So output from the operation unit 14. In this partial waveform display process, the control unit 15 controls the display unit 13 to display a partial signal waveform W2 based on the waveform data Dw for a predetermined time from the recording start time, as shown in FIG. . In the partial waveform display process, the control unit 15 displays the scroll bar Ba and the scroll box Bb in the scroll bar Ba as shown in FIG.

  Next, a method for performing scroll display of the partial signal waveform W2 along the horizontal direction (time axis) of the display unit 13 by a pointing operation on the scroll bar Ba will be described. The pointing operation with the fingertip 50 is actually performed on the operation surface of the touch panel 28 (each position on the operation surface facing each position in the image displayed on the display unit 13). In order to facilitate understanding of this point, description of this point is omitted in the following description.

  In order to perform scroll display by this method, as shown in FIG. 4, an arbitrary first position (as an example, the first position Pf1 shown in the figure) in the scroll bar Ba displayed on the display unit 13 is set. Pressing (contacting) with the fingertip 50. Next, as shown in FIG. 5, while maintaining the state of being pressed with the fingertip 50, an arbitrary second position within the scroll bar Ba from the first position Pf <b> 1 (as an example, as shown in FIG. 5, the first position Pf <b> 1 A drag operation is performed along the length direction of the scroll bar Ba to the second position Ps1) position on the right side of the scroll bar Ba. Subsequently, the pressing operation with the fingertip 50 is continuously performed at the second position Ps1. That is, the state where the fingertip 50 moved to the second position Ps1 by the drag operation is pressed without being separated from the touch panel 28 is maintained.

  The operation unit 14 outputs an operation signal So that can specify the position and movement locus of the fingertip 50 when the above-described operations are performed. Further, the control unit 15 specifies the position and movement locus of the fingertip 50 based on the operation signal So output from the operation unit 14, and specifies what pointing operation has been performed based on the position and movement locus. Further, the instruction content associated with the pointing operation is specified.

  Here, the control unit 15 performs a drag operation along the length direction of the scroll bar Ba from the first position Pf1 in the scroll bar Ba to the second position Ps1 in the scroll bar Ba as a pointing operation. When it is specified that the pressing operation has been continuously performed as the pointing operation at the second position Ps1, an instruction content for instructing the partial signal waveform W2 to be scroll-displayed based on this (instruction content for executing the scroll process) is displayed. Identify. In addition, the control unit 15 specifies the direction from the first position Pf1 to the second position Ps1, and scrolls the partial signal waveform W2 in the scroll process (scroll processing in advance associated with this direction). Specify the scroll direction). In the waveform display device 1, as an example, as shown in FIG. 5, with respect to the direction of the arrow A from the first position Pf1 to the second position Ps1 (the direction from the left end side to the right end side in the scroll bar Ba). Thus, the direction of the arrow B (direction from the left end side to the right end side in the display unit 13) is associated as the scroll direction when the partial signal waveform W2 is scroll-displayed.

  Further, the control unit 15 obtains a length L1 (see FIG. 5) along the length direction of the scroll bar Ba from the first position Pf1 to the second position Ps1, and is associated with the length L1 in advance. The scrolling speed (scrolling speed when scrolling the partial signal waveform W2 in the scrolling process) is specified. In the waveform display device 1, as an example, the longer the length L1, the faster the scroll speed is associated with, and the shorter the length L1, the slower the scroll speed is associated. Next, the control unit 15 starts a scroll process for scrolling and displaying the partial signal waveform W2 at the scroll direction and the scroll speed specified as described above.

  Further, as shown in FIG. 5, the control unit 15 causes the scroll box Bb to slide (move) in the scroll bar Ba in conjunction with the scroll display of the partial signal waveform W2. In this case, the control unit 15 slide-displays the scroll box Bb in the same direction as the direction of the drag operation (in this example, the direction of the arrow A shown in the figure). Here, the scroll box Bb functions as an indicator indicating which portion of the overall signal waveform W1 the partial signal waveform W2 displayed on the display unit 13 corresponds to. Therefore, by referring to the position of the scroll box Bb in the scroll bar Ba, it is possible to recognize at a glance which part of the entire signal waveform W1 is displayed on the display unit 13 as the partial signal waveform W2. It has become.

  Next, when stopping (ending) the scroll display, the fingertip 50 is moved away from the second position Ps1, and the pressing operation is ended. At this time, the control unit 15 specifies the instruction content for ending the scroll display of the partial signal waveform W2, and stops the scroll process. Thus, the control unit 15 performs the scroll process only while the pressing operation is performed at the second position Ps1, and stops the scroll process when the pressing operation at the second position Ps1 is completed.

  The control unit 15 continues the scroll display until the pressing operation at the second position Ps1 is continued and the partial signal waveform W2 corresponding to the last portion in the entire signal waveform W1 is displayed on the display unit 13, that is, When the scroll box Bb is slide-displayed until the scroll box Bb moves to the end of the scroll bar Ba, the scroll process is stopped even if the pressing operation is continued at that time.

  Next, when the partial signal waveform W2 is scroll-displayed in the direction opposite to the scroll direction in the scroll display described above, as shown in FIG. 6, from the arbitrary first position Pf2 in the scroll box Bb on the touch panel 28, the first A drag operation is performed along the length direction of the scroll bar Ba to the second position Ps2 located on the left side of the first position Pf2. Subsequently, the pressing operation with the fingertip 50 is continuously performed at the second position Ps2.

  At this time, the control unit 15 specifies that the above operation has been performed based on the operation signal So output from the operation unit 14, and specifies the instruction content for executing the scroll process based on this. Further, as shown in FIG. 6, the control unit 15 specifies the direction of the arrow B from the first position Pf2 to the second position Ps2 (direction from the right end side to the left and right end side in the scroll bar Ba). The direction of the arrow A is determined as the scroll direction previously associated with this direction. Further, the control unit 15 obtains a length L2 along the length direction of the scroll bar Ba from the first position Pf2 to the second position Ps2, and the scroll speed associated in advance with the length L2. Is identified. Subsequently, the control unit 15 starts a scroll process for scroll-displaying the partial signal waveform W2 at the scroll direction and the scroll speed specified as described above. Next, when stopping (ending) the scroll display, the fingertip 50 is moved away from the second position Ps2 in the same manner as described above, and the pressing operation is ended.

  On the other hand, as shown in FIG. 7, following the drag operation from the first position Pf3 to the second position Ps3 as the pointing operation, an arbitrary third position outside the scroll bar Ba from the second position Ps3 as the pointing operation. When the pressing operation is finished at the third position Pt1 after the drag operation to Pt1 is performed (the fingertip 50 is released from the touch panel 28), the control unit 15 performs scroll processing (in this example, in the same figure). (Scroll process for scrolling and displaying the partial signal waveform W2 in the direction of the arrow B shown) is continuously executed. Further, in the state where the scroll process is continued in accordance with such a pointing operation, the control unit 15, as shown in FIG. 8, an arbitrary position on the touch panel 28, that is, an arbitrary position on the display unit 13 (for example, When a pressing operation is performed at the position Po) shown in the figure, the scroll process is stopped.

  In this case, when the control unit 15 performs such processing, the scroll display is continued even after the pressing operation is finished (that is, without performing the operation on the operation unit 14). Therefore, for example, when the partial signal waveform W2 is scroll-displayed and the partial signal waveform W2 is observed, both hands can be freely used. As a result, it is possible to sufficiently improve the convenience in such usage. It has become.

  Thus, in the waveform display device 1 and the waveform display method, the drag operation along the length direction of the scroll bar Ba from the first position Pf1 to the second position Ps1 in the scroll bar Ba is performed as a pointing operation. Subsequently, when the pressing operation is continuously performed as the pointing operation at the second position Ps1, the scrolling process is executed only while the pressing operation is being performed, and the scrolling process is stopped when the pressing operation is completed. To do. For this reason, in the waveform display device 1 and the waveform display method, the length of the partial signal waveform W2 displayed on the display screen of the display unit 13 (the time length of the partial signal waveform W2 for one screen) is the total signal waveform W1. Unlike the conventional waveform display device, which is shorter than the length (time length) and the partial signal waveform W2 is scrolled and displayed by simply dragging the scroll box Bb slightly, the scroll box Bb is displayed in the scroll bar Ba. By continuing the pressing operation at the second position Ps1 without continuously dragging, the scroll display can be continued only while the pressing operation is continued. Therefore, according to the waveform display device 1 and the waveform display method, the partial signal waveform W2 is scroll-displayed by a pointing operation on the scroll bar Ba, and a desired portion (partial signal) is selected from the entire signal waveform W1 having a long time length. It is possible to sufficiently improve the operability in the usage pattern such as searching for the waveform W2).

  Further, in the waveform display device 1 and the waveform display method, following the drag operation from the first position Pf3 to the second position Ps3 as the pointing operation, the arbitrary position outside the scroll bar Ba from the second position Ps3 as the pointing operation. After the drag operation to the third position Pt1 is performed, when the pressing operation is completed at the third position Pt1, the scroll process is continuously executed. Therefore, in the waveform display device 1 and the waveform display method, since the scroll display can be continued without performing an operation on the operation unit 14, for example, the partial signal waveform W2 is displayed while scrolling the partial signal waveform W2. When observing, both hands can be used freely, and as a result, the convenience in such usage can be sufficiently improved. Further, when a pressing operation is performed at an arbitrary position Po in the display screen of the display unit 13 while the scroll process is continued, the scroll process is stopped. Therefore, in this waveform display device 1 and the waveform display method, it is not necessary to press the fingertip 50 while aiming at the scroll bar Ba, so that the scroll display can be stopped reliably and easily.

  Further, according to the waveform display device 1 and the waveform display method, when a drag operation is performed, scrolling is performed in a scroll direction that is associated in advance with the direction from the first position Pf1 to the second position Ps1. By executing the process, the partial signal waveform can be displayed in either the direction in which the time elapses or the direction in which the time goes back simply by changing the direction from the first position Pf1 to the second position Ps1 and performing a drag operation. As a result of the scroll display of W2, it is possible to further improve the operability when searching for a desired portion in the entire signal waveform W1.

  In the waveform display device 1 and the waveform display method, the length from the first position Pf1 to the second position Ps1 along the length direction of the scroll bar Ba in the drag operation from the first position Pf1 to the second position Ps1. The scroll process is executed at a speed previously associated with the length L1. Therefore, according to the waveform display device 1 and the waveform display method, for example, the longer the length L1, the faster the scroll speed is associated with, and the shorter the length L1, the slower the scroll speed. , The length from the first position Pf1 to the second position Ps1 when scrolling the partial signal waveform W2 and searching for a desired part in the entire signal waveform W1 over a long period of time. By dragging so that the length of the partial signal waveform W2 is scrolled and displayed at a high speed, the desired portion can be quickly found. Further, when observing the partial signal waveform W2 while performing scroll display, the partial signal waveform W2 is scrolled at a low speed by performing a drag operation so that the length from the first position Pf1 to the second position Ps1 is shortened. By displaying, the details of the partial signal waveform W2 can be observed in detail. Therefore, according to the waveform display device 1 and the waveform display method, the convenience in such usage can be sufficiently improved.

  Further, according to the waveform display device 1 and the waveform display method, the scroll box Ba is used to display the scroll box Bb indicating which part of the overall signal waveform W1 the partial signal waveform W2 displayed on the display unit 13 corresponds to. The scroll box Bb is slid and displayed in the scroll bar Ba in conjunction with the scroll display of the partial signal waveform W2 in the scroll process, so that any part of the entire signal waveform W1 is displayed as the partial signal waveform W2. Since it can be recognized at a glance, it is possible to sufficiently improve convenience when searching for a desired portion in the entire signal waveform W1.

  In addition, according to the waveform display device 1 and the waveform display method, the pointing operation unit is configured by including the light-transmitting touch panel 28 disposed on the display surface of the display unit 13, so that the scroll bar on the touch panel 28 is configured. Since the pointing operation can be performed by the touch operation with the fingertip 50 or the touch pen on the portion facing the Ba image, the operability can be further improved.

  The waveform display device and the waveform display method are not limited to the above configuration and method. For example, the configuration example in which the touch panel 28 is disposed on the display unit 13 has been described above. However, for example, a configuration in which the touch panel 28 is disposed at a position separated from the position at which the display unit 13 is disposed may be employed. Moreover, the structure provided with the touchscreen 28 different from the waveform display apparatus 1 is also employable. In this case, when the touch panel 28 separate from the waveform display device 1 is provided, the display unit 13 is not provided separately, or the display unit 13 is not provided (that is, the signal waveform W is displayed on the external display unit). It is also possible to adopt a configuration in which display is performed. Further, the example in which the pointing operation is performed by the touch operation with the fingertip 50 on the touch panel 28 has been described above, but a configuration and a method in which the pointing operation is performed by the touch operation using the touch pen on the touch panel 28 may be employed.

  Further, it is possible to employ a configuration and method in which each pointing operation described above is performed using a pointing operation unit other than the touch panel 28 such as a mouse, and the control unit 15 executes the above scroll processing in accordance with this pointing operation.

  Further, the example of displaying the signal waveform W of the voltage signal as the electric signal Se has been described above. However, the present invention can be applied to display waveforms of various electric signals Se such as a current signal and an electric signal indicating temperature. Of course. Further, although an example in which only one (one type) signal waveform W is drawn on the display unit 13 has been described above, a configuration in which two (two types) or more signal waveforms W are simultaneously drawn on the display unit 13 is employed. You can also.

DESCRIPTION OF SYMBOLS 1 Waveform display apparatus 13 Display part 14 Operation part 15 Control part 28 Touch panel Ba Scroll bar Bb Scroll box L1 Length L2 Length Pf1-Pf3 1st position Po position Ps1-Ps3 2nd position Pt1 3rd position W Signal waveform W1 whole Signal waveform W2 Partial signal waveform

Claims (7)

A pointing operation unit capable of performing a pointing operation on a scroll bar for scroll display displayed on the display unit; and a display control unit for executing a scroll process for scrolling and displaying a signal waveform on the display unit in accordance with the pointing operation. A waveform display device comprising:
The display control unit performs a drag operation along the length direction of the scroll bar from the first position to the second position in the scroll bar as the pointing operation, and subsequently performs a pressing operation at the second position. A waveform display device that executes the scroll process only while the pressing operation is being performed when the button is continuously performed as the pointing operation, and stops the scroll process when the pressing operation ends.   The display control unit moves from the second position as the pointing operation to an arbitrary third position outside the scroll bar following the drag operation from the first position to the second position as the pointing operation. When the pressing operation is finished at the third position after the drag operation is performed, the scroll process is continued and the press is performed at an arbitrary position on the display unit while the scroll process is continued. The waveform display device according to claim 1, wherein the scrolling process is stopped when an operation is performed.   The display control unit, when the drag operation is performed, executes the scroll process in a scroll direction that is associated in advance with a direction from the first position toward the second position. Or the waveform display apparatus of 2.   The display control unit corresponds in advance to the length from the first position to the second position along the length direction of the scroll bar in the drag operation from the first position to the second position. The waveform display apparatus according to claim 1, wherein the scroll process is executed at a scroll speed attached.   The display control unit displays in the scroll bar a scroll box indicating which part of the entire signal waveform the signal waveform displayed on the display unit corresponds to, and the signal waveform is displayed in the scroll process. 5. The waveform display device according to claim 1, wherein the scroll box is slide-displayed in the scroll bar in conjunction with the scroll display.   The waveform display device according to claim 1, wherein the pointing operation unit includes a light-transmissive touch panel disposed on a display surface of the display unit. A waveform display method for executing a scroll process for scrolling and displaying a signal waveform on the display unit in response to a pointing operation on a scroll bar for scroll display displayed on the display unit,
The drag operation along the length direction of the scroll bar from the first position to the second position in the scroll bar is performed as the pointing operation, and then the pressing operation is continued as the pointing operation at the second position. When performed, the scroll process is executed only while the pressing operation is performed, and the scrolling process is stopped when the pressing operation is completed.

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