JP5014633B2 - Waveform display device and waveform display method - Google Patents

Description

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

As this type of waveform display device, the applicant has disclosed a waveform recording device for displaying a signal waveform (reproduced waveform) based on waveform data recorded on a magnetic tape on a display in Japanese Patent Laid-Open No. 7-243871. In this waveform recording device, waveform data for a predetermined time (a predetermined number of waveform data) is read out of the waveform data for a predetermined time recorded on the magnetic tape, and a signal based on the read waveform data The waveform appears on the display. In this waveform recording apparatus, a scroll bar (the bar in the publication) indicating the length of a signal waveform (hereinafter also referred to as “overall waveform”) based on all waveform data recorded on the magnetic tape is displayed on the display. Is done. In this case, in this waveform recording apparatus, an identification mark is displayed on the scroll bar so as to be able to specify which portion of the signal waveform is displayed among all the waveforms.
Japanese Patent Laid-Open No. 7-243871 (page 3-4, FIG. 1-3)

  However, the waveform display device has the following problems to be improved. That is, the conventional apparatus employs a configuration in which the display range of the signal waveform with respect to all the waveforms is specified by displaying the identification mark on the scroll bar. On the other hand, in this type of apparatus, separately from the displayed signal waveform (hereinafter also referred to as “normal waveform”), an arbitrary part of the normal waveform is expanded in the time axis direction (hereinafter, referred to as “normal waveform”). There is a display that can display two types of signal waveforms with different time lengths (hereinafter also simply referred to as “waveform length”) displayed on the display by displaying “enlarged waveform”) To do. In this case, for example, when two types of signal waveforms having different waveform lengths are displayed by the apparatus disclosed by the applicant, the relative display range of the normal waveforms with respect to all waveforms can be specified, but It is difficult to specify the relative display range of the enlarged waveform. Therefore, even if both the signal waveform and the enlarged waveform are displayed, it is preferable that the relationship between the relative waveform and the relative display range between the two types of signal waveforms can be reliably specified.

  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 reliably specifying the relationship of relative display ranges between waveforms based on waveform data. The main purpose.

In order to achieve the above object, the waveform display device according to claim 1 includes a storage unit that stores waveform data, and a display control unit that displays a signal waveform based on the waveform data on the display unit, and the display control unit includes: The first signal waveform based on the waveform data for the first time among the waveform data for the predetermined time stored in the storage unit, and the second of the waveform data for the first time A second signal waveform based on waveform data for a time is displayed, a first display showing a relative time range of the first time with respect to the predetermined time, and the second with respect to the first time. And a second display showing a relative time range of the first time , and the first display has a length corresponding to the first time in a scroll bar having a length corresponding to the predetermined time. Show the first scroll box of Causes, as the second appear and the display the second scroll box of a length corresponding to the second time within said first scroll box.

The waveform display device according to claim 2 is the waveform display device according to claim 1 , wherein the display control unit is configured to perform the first operation on the scroll bar when the first scroll box is slid. The first signal waveform based on the waveform data for the first time corresponding to the position of the scroll box is displayed.

The waveform display apparatus according to claim 3, wherein, in the waveform display apparatus according to claim 1 or 2, wherein said display control unit, when said second scroll box is caused to slide operation, the in the scroll bar The second signal waveform based on the waveform data for the second time corresponding to the position of the second scroll box is displayed.

Further, 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 first scroll box when the first scroll box is slid. The first scroll box is further slid in the sliding direction in a state where the end of the scroll box opposite to the sliding direction overlaps the end of the second scroll box opposite to the sliding direction. When this is done, the second scroll box is slid in the sliding direction together with the first scroll box.

Further, 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 to perform the second operation when the second scroll box is slid. When the second scroll box is further slid in the slide direction in a state where the end of the scroll box on the slide direction side overlaps the end of the first scroll box on the slide direction side, The first scroll box is slid in the sliding direction together with the second scroll box.

The waveform display device according to claim 6 is the waveform display device according to any one of claims 1 to 3 , wherein the display control unit is configured such that when one of the scroll boxes is slid, The scroll boxes are slid in a state where the relative positional relationship between the scroll boxes is maintained.

According to a seventh aspect of the present invention, there is provided a waveform display method comprising: a first signal waveform based on waveform data for a first time among waveform data for a predetermined time; and a waveform data for the first time. Displaying a second signal waveform based on waveform data for a second time, a first display showing a relative time range of the first time with respect to the predetermined time, and the first time A second display indicating a relative time range of the second time , and the first display corresponds to the first time in a scroll bar having a length corresponding to the predetermined time. together to display the length of the first scroll box, as the second appear and the display the second scroll box of a length corresponding to the second time within said first scroll box.

According to the waveform display device according to claim 1 and the waveform display method according to claim 7 , the display control unit displays a first display indicating a relative time range of the first time with respect to a predetermined time, It is possible to reliably specify which part of the signal waveform (entire waveform) based on the waveform data for a predetermined time is displayed as the first signal waveform (normal waveform). Further, the display control unit displays the second display indicating the relative time range of the second time with respect to the first time, so that the signal waveform at any part of the normal waveform becomes the second signal waveform ( It is possible to reliably specify whether it is displayed as an enlarged waveform). Therefore, according to the waveform display device and the waveform display method, it is possible to reliably specify the relationship of the relative display range between the entire waveform and the normal waveform, and the relative relationship between the normal waveform and the enlarged waveform. As a result of reliably specifying the relationship between the display ranges, it is possible to reliably specify the relationship between the relative display ranges between the waveforms based on the waveform data.

Further, according to the waveform display method of waveform display apparatus and claim 7 according to claim 1, together with displaying the first scroll box within the scroll bar, the second scroll box within the first scroll box By displaying, it is possible to scroll the normal waveform and the signal waveform while reliably specifying the relationship of the relative display range between the waveforms.

According to the waveform display device of the second aspect , the display control unit displays the normal waveform based on the waveform data for the first time corresponding to the position of the first scroll box, so that the first waveform is displayed. Since the normal waveform can be scrolled by the sliding operation of the scroll box, the normal waveform at a desired position (for example, peak point) in the entire waveform can be easily displayed.

According to the waveform display device of the third aspect , the display control unit displays the enlarged waveform based on the waveform data for the second time corresponding to the position of the second scroll box. Since the enlarged waveform can be scrolled by the sliding operation of the scroll box, the enlarged waveform at a desired location in the normal waveform can be easily displayed.

According to the waveform display device of the fourth aspect , the display control unit further slides the first scroll box in a state where the ends opposite to the sliding direction of the first scroll box overlap each other. By sliding the second scroll box together with the first scroll box at this time, both signal waveforms can be scrolled while maintaining a state in which a part of the normal waveform is displayed in detail as an enlarged waveform. For this reason, for example, when the signal waveform at a desired location in the entire waveform is specified and displayed, the signal waveform at the predetermined location can be roughly specified by scrolling the normal waveform and the signal waveform at that location. Can be displayed in detail by the enlarged waveform. Therefore, since the signal waveform at a desired position in the entire waveform can be displayed in detail only by sliding the first scroll box, for example, each signal waveform is scrolled individually by sliding the scroll box separately. Compared with the structure to perform, the signal waveform of the desired location in the whole waveform can be displayed quickly and easily.

According to the waveform display device of the fifth aspect , the display control unit further slides the second scroll box in a state where the ends on the slide direction side where the first scroll box is slid overlap each other. By sliding the first scroll box together with the second scroll box at this time, both signal waveforms can be scrolled while maintaining a state in which a part of the normal waveform is displayed in detail as an enlarged waveform. For this reason, for example, when a signal waveform at a desired location in the entire waveform is specified and displayed, the signal waveform at a predetermined location is roughly specified by scrolling the normal waveform following the scroll of the enlarged waveform. In addition, the signal waveform at that location can be displayed in detail with an enlarged waveform. Therefore, the signal waveform at a desired position in the entire waveform can be displayed in detail only by the slide operation of the second scroll box. For example, each signal waveform is individually scrolled by sliding the scroll box separately. Compared with the structure to perform, the signal waveform of the desired location in the whole waveform can be displayed quickly and easily.

According to the waveform display device of the sixth aspect , the display control unit slides both the scroll boxes while maintaining the relative positional relationship between the two scroll boxes, so that a part of the normal waveform is obtained. Both signal waveforms can be scrolled while maintaining a detailed display as an enlarged waveform. For this reason, for example, when the signal waveform at a desired location in the entire waveform is specified and displayed, the signal waveform at the predetermined location can be roughly specified by scrolling the normal waveform and the signal waveform at that location. Can be displayed in detail by the enlarged waveform. Therefore, since the signal waveform of a desired location in the entire waveform can be displayed in detail by only one of the sliding operations of both scroll boxes, for example, each of the signal waveforms can be individually slid by sliding the scroll box separately. Compared with the scrolling configuration, the signal waveform at a desired position in the entire waveform can be displayed quickly and easily.

  Hereinafter, the best mode of a waveform display device and a waveform display method according to the present invention 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, the waveform display device 1 includes an input unit 2, a display control unit 3, a storage unit 4, an operation unit 5, and a display unit 6, and a display screen P described later (see FIGS. 2 and 4 to 8). ) Can be displayed. The input unit 2 samples, for example, a measurement signal input from an external measurement device (not shown) by analog-to-digital conversion to generate a digital signal input signal Si, and controls display of the generated input signal Si. Output to part 3.

  The display control unit 3 causes the storage unit 4 to store waveform data Dw indicating the signal waveform of the input signal Si for a predetermined time ts (for example, 1.5 milliseconds: see FIG. 3). Further, the display control unit 3 performs predetermined signal waveforms W1 and W2 based on the waveform data Dw according to the operation signal So output from the operation unit 5 (see FIG. 2; hereinafter, also referred to as “signal waveform W” when not distinguished). Is displayed on the display unit 6. Specifically, the display control unit 3 controls the display unit 6 to set an arbitrary time t1 (for example, 600 μsec: FIG. 3) defined by the operation of the operation unit 5 in the waveform data Dw for a predetermined time ts. (See) a signal waveform (first signal waveform in the present invention) W1 based on the waveform data Dw of the portion, and an arbitrary time t2 defined by the operation of the operation unit 5 of the waveform data Dw of the time t1. A signal waveform (second signal waveform in the present invention) W2 based on the waveform data Dw (for example, 300 μsec: see FIG. 3) is displayed. Further, as shown in FIGS. 2 and 4 to 8, the display control unit 3 includes a scroll bar Sb, a scroll box (first scroll box in the present invention) Sbx1 and a scroll box (second scroll box in the present invention) which will be described later. ) Sbx2 is displayed on the display screen P, and a pointer Po that can be moved in the display screen P by the operation of the operation unit 5 is displayed. In this case, the signal waveform W1 is scrolled by moving the pointer Po onto the scroll box Sbx1 and dragging, and the signal waveform W2 is scrolled by moving the pointer Po onto the scroll box Sbx2 and dragging.

  The storage unit 4 stores the waveform data Dw according to the control of the display control unit 3. The operation unit 5 includes a pointing device such as a mouse or a touch pad that moves the pointer Po, for example, and outputs an operation signal So corresponding to the movement operation of the pointer Po to the display control unit 3. The operation unit 5 includes an input device for numerical input such as a keyboard. When the times t1 and t2 shown in FIG. 3 are set, the operation signal So indicating the times t1 and t2 is sent to the display control unit 3. Output. The display unit 6 displays the display screen P according to the control of the display control unit 3.

  Next, an overall operation of the waveform display device 1 and a waveform display method using the waveform display device 1 will be described with reference to the drawings.

  When the waveform data Dw is stored in the storage unit 4, the input unit 2 samples a measurement signal input from an external measurement device to generate a digital signal input signal Si, and displays the generated input signal Si. Output to the control unit 3. At this time, the display control unit 3 correlates the time from the start of input of the input signal Si with the voltage value indicated by the input signal Si output from the input unit 2, thereby indicating a waveform indicating the signal waveform of the input signal Si. Data Dw is generated. For example, as illustrated in FIG. 3, the display control unit 3 includes a predetermined time ts from the time ts1 at which generation of the signal waveform of the input signal Si is started to the time ts2 at which generation of the signal waveform of the input signal Si is ended (this In the example, waveform data Dw indicating a signal waveform of 1.5 ms) (hereinafter, this signal waveform is also referred to as “whole waveform”) is stored in the storage unit 4.

  Further, when the signal waveform W based on the waveform data Dw is displayed on the display unit 6, the signal waveform W1, W2 (see FIGS. 2, 4 to 8) is displayed on the display screen P using the operation unit 5. Each time t1, t2 is set. In this case, the time t1 is the first time in the present invention, and as shown in FIG. 3, the time t1 is a time after the time ts1 and is set according to an arbitrary time t11 (for example, according to the movement operation of the pointer Po). A time t1 from the time ts1 to a time t100 (for example, a time after 700 μs from the time ts1), which is a time before the time ts2 and is set according to the movement operation of the pointer Po. Is set to 600 μs). The time t2 is the second time in the present invention, and as shown in the figure, is a time after the time t11 and an arbitrary time t21 set according to the movement operation of the pointer Po (for example, time Time t2 (in this example, from time ts1 250 μsec) to time t22 (eg, time 550 μsec after time ts1) that is set before the time t12 and is set in accordance with the movement operation of the pointer Po. 300 μsec). At this time, the operation unit 5 outputs an operation signal So indicating both the set times t1 and t2 to the display control unit 3.

  The display control unit 3 reads the waveform data Dw for the time t1 from the stored waveform data Dw for the predetermined time ts. Next, as shown in FIG. 2, the display control unit 3 displays a signal waveform W1 based on the read waveform data Dw (hereinafter, this signal waveform W1 is also referred to as “normal waveform W1”) in the waveform display screen P1. . In this case, the waveform display screen P1 is displayed horizontally in the upper area of the display screen P as shown in FIG. Further, in the waveform display screen P1, a frame F indicating which part of the normal waveform W1 is displayed as an enlarged waveform W2 in a waveform display screen P2 described later is displayed.

  Further, the display control unit 3 reads the waveform data Dw for time t2 from the waveform data Dw for time t1. Subsequently, as shown in FIG. 2, the display control unit 3 displays the signal waveform W2 based on the read waveform data Dw in the waveform display screen P2. As a result, a signal waveform W2 obtained by enlarging a part of the normal waveform W1 in the time axis direction (hereinafter, this signal waveform W2 is also referred to as “enlarged waveform W2”) is displayed in detail in the waveform display screen P2. The In this case, the waveform display screen P2 is displayed horizontally in the lower area of the display screen P as shown in FIG.

  Further, as shown in FIG. 2, the display control unit 3 displays the scroll bar Sb and the scroll boxes Sbx1 and Sbx2 (hereinafter also referred to as “scroll box Sbx” when not distinguished) in the lower area of the display screen P. . In this case, the scroll bar Sb is displayed in a horizontally long shape so that its length Ls corresponds to a predetermined time ts that is the waveform length of the entire waveform and extends in the width direction of the display screen P. . The scroll box Sbx1 has a length L1 that is defined as a length corresponding to the time t1 that is the waveform length of the signal waveform W1, and is displayed in the scroll bar Sb. Thereby, the scroll bar Sb and the scroll box Sbx1 show the relative time range of the time t1 which is the waveform length of the signal waveform W1 with respect to the predetermined time ts which is the waveform length of the entire waveform as the first display in the present invention. . In this case, by displaying the scroll box Sbx1 in the scroll bar Sb, it is possible to reliably identify which signal waveform of the entire waveform is displayed as the normal waveform W1 in the waveform display screen P1.

  The scroll box Sbx2 is displayed in the scroll box Sbx1 while its length L2 is defined to be a length corresponding to the time t2, which is the waveform length of the signal waveform W2. Thereby, both scroll boxes Sbx1 and Sbx2 show the relative time range of the time t2 which is the waveform length of the signal waveform W2 with respect to the time t1 which is the waveform length of the signal waveform W1 as the second display in the present invention. In this case, by displaying the scroll box Sbx2 in the scroll box Sbx1, it is possible to reliably identify which part of the normal waveform W1 is displayed as the enlarged waveform W2 in the waveform display screen P2. . Therefore, in the waveform display device 1, the relationship between the relative display ranges of the normal waveform W1 and the enlarged waveform W2 with respect to the entire waveform is reliably specified.

  Further, when the signal waveform W is scrolled by the sliding operation of the scroll box Sbx1, as shown in FIG. 4, the pointer Po is moved onto the scroll box Sbx1 by using the operation unit 5, and then a predetermined sliding direction. Drag the scroll box Sbx1 to A (rightward). At this time, the operation unit 5 outputs an operation signal So corresponding to the slide operation of the scroll box Sbx1 to the display control unit 3. In response to this, the display control unit 3 controls the display unit 6 so that the normal waveform based on the waveform data Dw for the time t1 from the time t11 to the time t12 corresponding to the position of the scroll box Sbx1 in the scroll bar Sb. W1 is displayed in the waveform display screen P1. In this case, the display control unit 3 displays the normal waveform W1 based on the waveform data Dw for the time t1 corresponding to the position of the scroll box Sbx1, whereby the normal waveform W1 is scrolled by the slide operation of the scroll box Sbx1.

  At this time, when the scroll box Sbx1 is slid rightward, the display control unit 3 displays the signal waveform W1 in order to display the signal waveform subsequent to the currently displayed normal waveform W1 in the waveform display screen P1. Scrolls left with frame F. At this time, the display control unit 3 maintains the enlarged waveform W2 in the initial state and also maintains the scroll box Sbx2 in the initial position. At this time, the left end E1a opposite to the sliding direction A in the scroll box Sbx1 approaches the left end E2a of the scroll box Sbx2. Subsequently, by further sliding the scroll box Sbx1, the left end portions E1a and E2a overlap each other as shown in FIG.

  Next, when the scroll box Sbx1 is further slid with the left end portions E1a and E2a overlapped, the display control unit 3 slides the scroll box Sbx2 in the sliding direction A together with the scroll box Sbx1. At this time, the display control unit 3 displays both signal waveforms W1, W2 based on the waveform data Dw for the times t1, t2 corresponding to the positions of the scroll boxes Sbx1, Sbx2. For example, as illustrated in FIG. 5, the display control unit 3 performs time t12 (for example, a time point after 350 μsec from the time ts1) to time t12 (for example, a time point after 950 μsec from the time ts1) corresponding to the position of the scroll box Sbx1. The normal waveform W1 based on the waveform data Dw for the time t1 until the time t1 is displayed, and the time t22 (for example, 350 μsec after the time ts1) corresponding to the position of the scroll box Sbx2 to the time t22 (for example, ts1 to 650 μsec) The enlarged waveform W2 based on the waveform data Dw for time t2 until the later time) is displayed.

  In this way, the display control unit 3 scrolls both signal waveforms W while maintaining a state in which a part of the normal waveform W1 is displayed in detail as the enlarged waveform W2. In this case, for example, when a signal waveform at a desired location (for example, peak point) in the entire waveform is specified and displayed, the signal waveform at a predetermined location is roughly specified by scrolling the normal waveform W1, and At the same time, the signal waveform at that location is displayed in detail by the enlarged waveform W2. As a result, it is possible to display the signal waveform of a desired portion in the entire waveform in detail only by the sliding operation of the scroll box Sbx1, and therefore, for example, the signal waveforms W1, W2 are individually operated by sliding the scroll box Sbx. Compared with the configuration of individually scrolling, the signal waveform W at a desired position in the entire waveform is displayed quickly and easily.

  Further, when the signal waveform W is scrolled by the sliding operation of the scroll box Sbx2, as shown in FIG. 6, after the pointer Po is moved onto the scroll box Sbx2, the scroll box Sbx2 in the sliding direction A (right direction). Drag At this time, the display control unit 3 displays an enlarged waveform W2 based on the waveform data Dw for time t2 from time t21 to time t22 corresponding to the position of the scroll box Sbx2 in the scroll box Sbx1 in the waveform display screen P2. . In this case, the display control unit 3 displays the enlarged waveform W2 based on the waveform data Dw for the time t2 corresponding to the position of the scroll box Sbx2, whereby the enlarged waveform W2 is scrolled by the slide operation of the scroll box Sbx2.

  At this time, when the scroll box Sbx2 is slid rightward, the display control unit 3 displays the enlarged waveform W2 in order to display the signal waveform subsequent to the currently displayed enlarged waveform W2 in the waveform display screen P2. While scrolling to the left, the frame F is scrolled to the right in the waveform display screen P1. At this time, the display control unit 3 maintains the normal waveform W1 in the initial state and also maintains the scroll box Sbx1 in the initial position. At this time, the right end E2b on the sliding direction A side in the scroll box Sbx2 approaches the right end E1b of the scroll box Sbx1. Subsequently, by further sliding the scroll box Sbx2, the right end portions E2b and E1b overlap each other as shown in FIG.

  Next, when the scroll box Sbx2 is further slid in a state where the right end portions E2b and E1b are overlapped, the display control unit 3 slides the scroll box Sbx1 in the sliding direction A together with the scroll box Sbx2. At this time, the display control unit 3 displays both signal waveforms W1, W2 based on the waveform data Dw for the times t1, t2 corresponding to the positions of the scroll boxes Sbx1, Sbx2. For example, as shown in FIG. 7, the display control unit 3 performs time t11 (for example, a time point after 200 μs from the time ts1) to time t12 (for example, a time point after 800 μs from the time ts1) corresponding to the position of the scroll box Sbx1. The normal waveform W1 based on the waveform data Dw for the time t1 is displayed, and the time t21 (for example, 500 μsec after the time ts1) corresponding to the position of the scroll box Sbx2 to the time t22 (for example, the time ts1 to 800 μsec) is displayed. The enlarged waveform W2 based on the waveform data Dw for time t2 until the later time) is displayed.

  As described above, the display control unit 3 scrolls both signal waveforms W while maintaining a state in which a part of the normal waveform W1 is displayed in detail as the enlarged waveform W2. In this case, for example, when a signal waveform at a desired location in the entire waveform is specified and displayed, the signal waveform at a predetermined location is roughly specified by scrolling the normal waveform W1 following the scroll of the enlarged waveform W2. At the same time, the signal waveform at that location is displayed in detail by the enlarged waveform W2. As a result, it is possible to display in detail the signal waveform at a desired location in the entire waveform only by sliding the scroll box Sbx2, so that, for example, the signal waveforms W1, W2 can be individually slid by sliding the scroll box Sbx. Compared with the configuration of individually scrolling, the signal waveform W at a desired position in the entire waveform is displayed quickly and easily.

  As described above, according to the waveform display device 1 and the waveform display method described above, the display control unit 3 displays the scroll box Sbx1 in the scroll bar Sb, so that the signal waveform of any part of the entire waveform is normal. Whether the waveform W1 is displayed or not can be specified with certainty. Further, the display control unit 3 displays the scroll box Sbx2 in the scroll box Sbx1, so that it is possible to reliably specify which part of the normal waveform W1 is displayed as the enlarged waveform W2. Therefore, according to this waveform display device 1 and the above waveform display method, the relative display range relationship between the entire waveform and the normal waveform W1 can be reliably specified, and the normal waveform W1 and the enlarged waveform W2 can be specified. As a result of reliably specifying the relative display range relationship between the waveforms, it is possible to reliably specify the relative display range relationship between the waveforms based on the waveform data Dw.

  Further, according to the waveform display device 1, the display control unit 3 displays the scroll box Sbx1 in the scroll bar Sb and also displays the scroll box Sbx2 in the scroll box Sbx1, thereby making it possible to obtain a relative relationship between the waveforms. It is also possible to scroll each signal waveform W while reliably specifying the relationship of the typical display range.

  Further, according to the waveform display device 1, the display control unit 3 displays the normal waveform W1 based on the waveform data Dw for the time t1 corresponding to the position of the scroll box Sbx1, thereby performing the slide operation of the scroll box Sbx1. Since the normal waveform W1 can be scrolled, the normal waveform W1 at a desired location in the entire waveform can be easily displayed.

  Further, according to the waveform display device 1, the display control unit 3 displays the enlarged waveform W2 based on the waveform data Dw for the time t2 corresponding to the position of the scroll box Sbx2, thereby performing the slide operation of the scroll box Sbx2. Since the enlarged waveform W2 can be scrolled, the enlarged waveform W2 at a desired location in the normal waveform W1 can be easily displayed.

  Further, according to the waveform display device 1, when the scroll box Sbx1 is further slid with the left end portions E1a and E2a overlapped, the display control unit 3 slides the scroll box Sbx2 together with the scroll box Sbx1. Thus, both signal waveforms W1 and W2 can be scrolled while maintaining a state in which a part of the normal waveform W1 is displayed in detail as the enlarged waveform W2. For this reason, for example, when the signal waveform of a desired location in the entire waveform is specified and displayed, the signal waveform at the predetermined location can be roughly specified by scrolling the normal waveform W1 and the signal at that location. The waveform can be displayed in detail by the enlarged waveform W2. Accordingly, since the signal waveform of a desired portion in the entire waveform can be displayed in detail only by the sliding operation of the scroll box Sbx1, for example, each of the signal waveforms W1, W2 is individually slid by individually sliding the scroll box Sbx. Compared with the configuration of scrolling, the signal waveform W at a desired position in the entire waveform can be displayed quickly and easily.

  Further, according to the waveform display device 1, when the scroll box Sbx2 is further slid in a state where the right end portions E2b and E1b are overlapped, the display control unit 3 slides the scroll box Sbx1 together with the scroll box Sbx2. Thus, both signal waveforms W1 and W2 can be scrolled while maintaining a state in which a part of the normal waveform W1 is displayed in detail as the enlarged waveform W2. For this reason, for example, when a signal waveform at a desired location in the entire waveform is specified and displayed, the signal waveform at a predetermined location is roughly specified by scrolling the normal waveform W1 following the scroll of the enlarged waveform W2. In addition, the signal waveform at that location can be displayed in detail by the enlarged waveform W2. Accordingly, since the signal waveform of a desired portion in the entire waveform can be displayed in detail only by the sliding operation of the scroll box Sbx2, for example, each of the signal waveforms W1, W2 is individually slid by individually sliding the scroll box Sbx. Compared with the configuration of scrolling, the signal waveform W at a desired position in the entire waveform can be displayed quickly and easily.

  In addition, this invention is not limited to said structure. For example, when one of the scroll boxes Sbx is slid in a state where the left end portions E1a and E2a or the right end portions E2b and E1b of the scroll boxes Sbx1 and Sbx2 overlap each other, the scroll boxes Sbx are simultaneously slid. However, the present invention is not limited to this. For example, when either of the scroll boxes Sbx is slid, the display control unit 3 can slide both the scroll boxes Sbx while maintaining the relative positional relationship between the scroll boxes Sbx.

  In this case, as shown in FIG. 8, for example, when the scroll box Sbx1 is slid in the sliding direction A, the display control unit 3 starts from the slide start time while maintaining the relative positional relationship between the scroll boxes Sbx. Both scroll boxes Sbx are slid in the sliding direction A. Thereby, both signal waveforms W1, W2 are scrolled simultaneously in the left direction. Similarly, when the scroll box Sbx2 is slid, both signal waveforms W1 and W2 are scrolled in the same manner as the above operation. In this case, when any of the scroll boxes Sbx is slid, the display control unit 3 maintains the state in which a part of the normal waveform W1 is displayed in detail as the enlarged waveform W2 while maintaining both signal waveforms W. Scroll. Therefore, according to this configuration, for example, when a signal waveform at a desired location in the entire waveform is specified and displayed, the signal waveform at a predetermined location can be roughly specified by scrolling the normal waveform W1. In addition, the signal waveform at that location can be displayed in detail by the enlarged waveform W2. Accordingly, since the signal waveform at a desired position in the entire waveform can be displayed in detail by only sliding operation of either scroll box Sbx, for example, each of the signal waveforms W1, Compared with the configuration in which W2 is individually scrolled, the signal waveform W at a desired position in the entire waveform can be displayed quickly and easily.

1 is a block diagram of a waveform display device 1. FIG. It is a display screen figure which shows the display screen P of the state which has scroll box Sbx2 in the center of scroll box Sbx1. It is a relationship figure which shows the relationship between predetermined time ts and each time t1, t2. It is a display screen figure which shows the display screen P of the state in which the left end parts E1a and E2a of both scroll boxes Sbx1 and Sbx2 overlap. It is a display screen figure which shows an example of the display screen P of the state which is dragging scroll box Sbx1 and sliding operation of both scroll boxes Sbx1 and Sbx2. It is a display screen figure which shows the display screen P of the state in which the right end part E1b and E2b of both scroll box Sbx1, Sbx2 overlapped. It is a display screen figure which shows the display screen P of the state which drags scroll box Sbx2 and slides both scroll boxes Sbx1 and Sbx2. It is a display screen figure which shows another example of the display screen P of the state which drags scroll box Sbx1 and slides both scroll boxes Sbx1 and Sbx2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waveform display apparatus 2 Input part 3 Display control part 4 Memory | storage part 5 Operation part 6 Display part Dw Waveform data E1a, Eb Left end part E1b, E2b Right end part Ls, L1, L2 Length Sb Scroll bar Sbx1, Sbx2 Scroll box ts Predetermined Time t1, t2 Time W1, W2 Signal waveform

Claims (7)

A storage unit that stores waveform data; and a display control unit that displays a signal waveform based on the waveform data on a display unit,
The display control unit includes a first signal waveform based on waveform data for a first time among waveform data for a predetermined time stored in the storage unit, and waveform data for the first time. And displaying a second signal waveform based on the waveform data for the second time, a first display indicating a relative time range of the first time with respect to the predetermined time, and the first A second display showing a relative time range of the second time with respect to the time , and the first time is displayed in the scroll bar having a length corresponding to the predetermined time as the first display. And a second scroll box having a length corresponding to the second time is displayed in the first scroll box as the second display. Waveform display device. The display control unit, based on the waveform data for the first time corresponding to the position of the first scroll box on the scroll bar, when the first scroll box is slid. 2. The waveform display device according to claim 1, wherein one signal waveform is displayed. The display control unit, based on the waveform data for the second time corresponding to the position of the second scroll box on the scroll bar, when the second scroll box is slid. The waveform display apparatus according to claim 1 or 2, wherein two signal waveforms are displayed. The display control unit is configured such that when the first scroll box is slid, an end of the first scroll box opposite to the slide direction is opposite to the slide direction of the second scroll box. when the first scroll box is further slid in the sliding direction in a state in which the overlap between the end portions, according to claim 1 for sliding the second scroll box to the sliding direction together with the first scroll box 4. The waveform display device according to any one of items 1 to 3 . In the slide operation of the second scroll box, the display control unit has an end on the slide direction side of the second scroll box overlapped with an end on the slide direction side of the first scroll box. when the second scroll box in the state is further slid in the sliding direction, either the first scroll box claims 1 to slide in the sliding direction together with the second scroll box 4 The waveform display device described. The display controller, the when one of the two scroll box has been slid operation, the two relative positions of the scroll box while maintaining the two scroll box claims 1 to slide 3 The waveform display apparatus in any one. A first signal waveform based on waveform data for a first time among waveform data for a predetermined time, and a second based on waveform data for a second time among the waveform data for the first time. A first waveform indicating a relative time range of the first time with respect to the predetermined time, and a relative time range of the second time with respect to the first time. And a first scroll box having a length corresponding to the first time is displayed in the scroll bar having a length corresponding to the predetermined time as the first display. together with the a second display, the first waveform display method Ru display the second scroll box of a length corresponding to the second time in the scroll box.

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