JP2014066627A - Waveform display device and waveform display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable quick and easy visual recognition of an association between a signal waveform based on a display target signal and character information relating to the display target signal without causing wrong recognition of the association.SOLUTION: A waveform display device includes a display control unit that displays on a waveform display screen 11 signal waveforms W1-W4 based on display target signals and predetermined character information i1-i4 relating to the display target signals in association with each other. The display control unit performs: display processing A that, when sections satisfying a condition A exist in the signal waveforms W1 and W4 displayed on the waveform display screen 11, displays the character information i1 and i4 at predetermined positions in the vicinity of the sections satisfying the condition A, the condition A being that the levels of the corresponding display target signals rise to Hi levels; and display processing B that, when sections satisfying a condition B exist in the signal waveforms W2 and W3 displayed on the waveform display screen 11, displays the character information i2 and i3 at predetermined positions in the vicinity of the sections satisfying the condition B, the condition B being that the levels of the corresponding display target signals drop to Low levels.

Description

  The present invention relates to a waveform display device and a waveform display method for displaying a signal waveform based on a display target signal and character information related to the display target signal on a waveform display screen in association with each other.

  As this type of waveform display device and waveform display method, the applicant has disclosed a display device capable of displaying a logic waveform and a method of displaying a logic waveform in Japanese Patent No. 3117799. In this display device and display method, a configuration / method is employed in which the input waveform data is stored in the RAM, and the logic waveform based on the waveform data stored in the RAM by the CPU is displayed on the CRT. In this case, in the display device and the display method disclosed by the applicant, as shown in FIG. 8, eight horizontally long strip displays for displaying the logic waveforms for eight channels CH1 to CH8 in the CRT display screen, respectively. Character information of “CH1” to “CH8” (hereinafter referred to as character information) for specifying which channel the logic waveform based on the waveform data of which channel is displayed is defined. A configuration / method is employed in which “channel number display” is also displayed on the left side of each display area (outside each display area). Thereby, it is possible to identify how the corresponding waveform data changes by observing the logic waveform for each channel.

Japanese Patent No. 3117799 (page 2-3, Fig. 1-4)

  However, the display device and the display method disclosed by the applicant have the following problems to be improved. That is, in this display device and display method, a configuration / method is employed in which a channel number display is displayed on the left side for each display region in which a logic waveform based on waveform data for each channel is displayed. In this case, the display device / display device employs a configuration / method in which a channel number display is fixedly displayed on the left side of each display area. Therefore, for example, when the waveform change portion is located on the right side of the display area as in the logic waveform based on the waveform data of CH4 to CH6 in the example shown in FIG. 8, the user can change the display screen (display area). By looking at the part to the right and recognizing that there is a change part in the logic waveform, by moving the line of sight to the left side of the display screen and reading the channel number display displayed on the left side of the display area, It is specified which logic waveform based on the waveform data of which channel the logic waveform in which the change part exists is specified.

  For this reason, in this display device and display method, the display part (display screen of the channel number display) corresponding to the display area from the change part of the logic waveform (in the right side of the display screen) displayed in one of the display areas. While the line of sight is moving to the left), the line of sight may move up and down, reading the channel number display corresponding to the other display area, and the logic where the change part exists There is a risk of misidentifying which channel the logic waveform is based on the waveform data of. Therefore, it is preferable to improve this point.

  In this type of waveform display device and waveform display device, unlike the display device and display method disclosed by the applicant, a channel is provided at a specified position in the display region of the signal waveform (for example, to the left in the display region). The one that adopts the configuration / method for displaying the number display, the display color and line type of each signal waveform are different from each other, and the signal waveform of any display color (or line type) is the waveform data of any channel In some cases, a configuration / method for displaying a correspondence display indicating a correspondence relationship as to whether the signal waveform is based on the signal waveform on the display screen separately from the signal waveform exists. However, even in these configurations and methods, the display device disclosed by the above-mentioned applicant is required when the portion to be noted in the signal waveform is separated from the display portion for character information such as channel number display. And the same problem as the problem which exists in the display method will arise.

  The present invention has been made in view of such problems, and waveform display that allows a signal waveform based on a display target signal and a character information related to the display target signal to be recognized quickly and easily without misrecognizing the association. The main object is to provide a device and a waveform display method.

  In order to achieve the above object, the waveform display device according to claim 1 is a display control for displaying a signal waveform based on a display target signal and predetermined character information related to the display target signal on a waveform display screen in association with each other. A waveform display device comprising: a condition A that the signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen rises to a predetermined high level; Display processing A for displaying the character information related to the display target signal at a predetermined display position A in the vicinity of the portion satisfying the condition A when there is a portion satisfying the condition A, and the signal displayed on the waveform display screen When there is a part that satisfies the condition B that the signal level of the display target signal corresponding to the waveform falls to a predetermined low level in the waveform. Performing at least one of a displaying process B for displaying the character information related to the displayed signal in predefined display position B near the site which satisfies the condition B.

  The waveform display device according to claim 2 is the waveform display device according to claim 1, wherein the display control unit satisfies the condition A in the signal waveform displayed on the waveform display screen during the display processing A. The signal that causes the character information to be displayed as the display position A in the vicinity of the earliest part in the time axis direction of the plurality of parts when there are a plurality of parts, and is displayed on the waveform display screen during the display process B When there are a plurality of parts satisfying the condition B in the waveform, the character information is displayed with the vicinity of the earliest part in the time axis direction among the plurality of parts as the display position B.

  According to a third aspect of the present invention, there is provided a waveform display apparatus comprising: a display control unit configured to correlate a signal waveform based on a display target signal and predetermined character information related to the display target signal on a waveform display screen. In the waveform display device, the display control unit has a first condition that a signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen rises to a predetermined first signal level or higher. A first display process for displaying the character information relating to the display target signal at a first display position defined in advance in the vicinity of the part satisfying the first condition when there is a part satisfying the first condition, and display on the waveform display screen There is a portion that satisfies the second condition that the signal level of the display target signal corresponding to the signal waveform to be reduced falls below a predetermined second signal level. At least one of the second display processing for displaying the said character information related to the displayed signal a predefined second display position in the vicinity of the second condition is satisfied sites execution Rutoki.

  The waveform display device according to claim 4 is the waveform display device according to claim 3, wherein the display control unit sets the first condition to the signal waveform to be displayed on the waveform display screen in the first display processing. When there are a plurality of satisfying parts, the character information is displayed with the vicinity of the first part of the plurality of parts in the time axis direction as the first display position, and the waveform display screen is displayed during the second display process. When there are a plurality of parts satisfying the second condition in the signal waveform to be displayed, the character information is displayed with the vicinity of the earliest part in the time axis direction among the plurality of parts as the second display position.

  The waveform display method according to claim 5 is a waveform display method in which a signal waveform based on a display target signal and predetermined character information related to the display target signal are correlated and displayed on a waveform display screen. In the vicinity of a part that satisfies the condition A when there is a part that satisfies the condition A that the signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen rises to a predetermined high level. Display processing A for displaying the character information relating to the display target signal at a predetermined display position A, and a signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen is predetermined. Predetermined display position in the vicinity of the part satisfying the condition B when there is a part satisfying the condition B to be lowered to the low level The display displays the character information relating to the target signal for performing at least one of a displaying process B to.

  The waveform display method according to claim 6 is a waveform display method in which a signal waveform based on a display target signal and predetermined character information related to the display target signal are associated with each other and displayed on a waveform display screen. The first condition when there is a part that satisfies the first condition that the signal level of the display target signal corresponding to the signal waveform to be displayed on the waveform display screen rises to a predetermined first signal level or higher. A first display process for displaying the character information related to the display target signal at a first display position defined in advance in the vicinity of a portion satisfying the condition, and the display target signal corresponding to the signal waveform displayed on the waveform display screen When there is a part that satisfies the second condition that the signal level falls below a predetermined second signal level, Performing at least one of a second display processing for displaying the character information related to the displayed signal a predefined second display position beside.

  According to the waveform display device according to claim 1 and the waveform display method according to claim 5, when there is a portion satisfying the condition A in the signal waveform displayed on the waveform display screen, the vicinity of the portion satisfying the condition A is previously stored. Display processing A for displaying character information related to a display target signal at a specified display position A, and pre-definition in the vicinity of a portion satisfying condition B when there is a portion satisfying condition B in the signal waveform displayed on the waveform display screen By executing at least one of display processing B for displaying character information related to the display target signal at the displayed display position B, a portion that satisfies the condition A in the signal waveform or a portion that satisfies the condition B in the signal waveform is a waveform. Regardless of the position in the display screen, the character information is displayed in the vicinity of the part that satisfies the condition A or the part that satisfies the condition B. As a result of allowing the character information to be visually recognized without greatly moving the line of sight from the part satisfying the condition A or the part satisfying the condition B in the waveform, they can be easily recognized without misrecognizing the association between the signal waveform and the character information. Can be made.

  According to the waveform display device of the second aspect, when there are a plurality of parts satisfying the condition A in the signal waveform displayed on the waveform display screen in the display process A, the earliest in the time axis direction among the plurality of parts. Character information is displayed in the vicinity of the part, and when there are a plurality of parts satisfying the condition B in the signal waveform displayed on the waveform display screen in the display process B, the earliest part in the time axis direction of the plurality of parts is displayed. By displaying character information in the vicinity, the relationship between the signal waveform and character information can be recognized smoothly on the waveform display screen where the signal waveform is often viewed from the earliest position in the time axis direction to the latest position. Can be made.

  Further, according to the waveform display device according to claim 3 and the waveform display method according to claim 6, a portion that satisfies the first condition is present when there is a portion that satisfies the first condition in the signal waveform displayed on the waveform display screen. A first display process for displaying character information related to a display target signal at a first display position defined in advance in the vicinity of the second display condition, and a second condition when there is a portion that satisfies the second condition in the signal waveform displayed on the waveform display screen. By executing at least one of the second display processing for displaying character information related to the display target signal at a second display position defined in advance in the vicinity of the part that satisfies the condition, the part that satisfies the first condition in the signal waveform Even if the part satisfying the second condition in the signal waveform is located anywhere in the waveform display screen, the part satisfying the first condition or the vicinity of the part satisfying the second condition Since the character information is displayed, the character information can be visually recognized without greatly moving the line of sight from the part satisfying the first condition or the part satisfying the second condition in the signal waveform. As a result, the association between the signal waveform and the character information These can be easily recognized without misunderstanding.

  According to the waveform display device of the fourth aspect, when there are a plurality of parts satisfying the first condition in the signal waveform to be displayed on the waveform display screen in the first display process, the plurality of parts in the time axis direction are selected. Character information is displayed in the vicinity of the earliest part, and when there are a plurality of parts that satisfy the second condition in the signal waveform displayed on the waveform display screen during the second display processing, the time axis direction of the plurality of parts is the highest in the time axis direction. By displaying character information in the vicinity of the previous part, the relationship between the signal waveform and the character information on the waveform display screen where the signal waveform is often viewed from the earliest position in the time axis direction to the latest position Can be recognized smoothly.

1 is a configuration diagram showing a configuration of a waveform display device 1. FIG. FIG. 6 is a display screen diagram showing a state in which signal waveforms W1 to W4 and character information i1 to i4 are associated with each other and displayed in the waveform display screen 11. FIG. 11 is another display screen diagram in a state where signal waveforms W1 to W4 and character information i1 to i4 are associated with each other and displayed in the waveform display screen 11. FIG. 14 is still another display screen diagram in a state where signal waveforms W1 to W4 and character information i1 to i4 are associated with each other and displayed in the waveform display screen 11. FIG. 14 is still another display screen diagram in a state where signal waveforms W1 to W4 and character information i1 to i4 are associated with each other and displayed in the waveform display screen 11. FIG. 14 is still another display screen diagram in a state where signal waveforms W1 to W4 and character information i1 to i4 are associated with each other and displayed in the waveform display screen 11. FIG. 6 is a display screen diagram showing a state in which signal waveforms W1a, W2a and character information i1, i2 are displayed in the waveform display screen 11 in association with each other. It is a display screen figure which shows an example of the display screen of the logic waveform in the display apparatus and the display method which the applicant has disclosed.

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

  The waveform display device 1 shown in FIG. 1 is an example of a “waveform display device”, and in accordance with a “waveform display method” described later, as an example, a signal waveform based on a control signal (logic signal) transmitted and received in an observation target W1 to W4 (logic waveform: see FIGS. 2 to 6: hereinafter, also referred to as “signal waveform W” when not distinguished) are configured to be displayed. Specifically, the waveform display device 1 includes a measurement unit 2, an operation unit 3, a display unit 4, a control unit 5, and a storage unit 6.

  As an example, the measurement unit 2 includes four measurement channels CH1 to CH4. The measuring unit 2 receives the above control signals as input signals S1 to S4 (an example of “display target signal”: hereinafter also referred to as “input signal S” when not distinguished) in accordance with the control of the control unit 5 and has a waveform. Analog-digital conversion (hereinafter also simply referred to as “conversion”) is performed on the data D1 to D4 (hereinafter also referred to as “waveform data D” when not distinguished), and the converted waveform data D is output to the control unit 5. In the following description, the process of converting the input signal S into the waveform data D and outputting it is also referred to as “measurement process”. The operation unit 3 includes various operation switches for setting operating conditions of the waveform display device 1 and outputs an operation signal corresponding to the switch operation to the control unit 5.

  The display unit 4 includes a liquid crystal display panel as an example, and an operation condition setting screen (not shown) for setting the operation condition of the waveform display device 1 based on display data output from the control unit 5. ), And a waveform display screen 11 (see FIGS. 2 to 6) for displaying each signal waveform W is displayed. In this case, in the waveform display device 1 of this example, the waveform display area 12 for displaying the signal waveforms W (signal waveforms W based on the waveform data D) for each measurement channel in the vertical direction is displayed in the waveform display screen 11. And character information i1 to i4 relating to the input signal S that is the basis of each signal waveform W (in this example, a channel number display indicating a measurement channel obtained by converting the input signal S into waveform data D) : Hereinafter referred to as “character information i” when not distinguished from each other) is associated with each other and displayed in the waveform display region 12.

  The control unit 5 comprehensively controls the waveform display device 1. Specifically, the control unit 5 controls the measurement unit 2 according to an operation signal from the operation unit 3 to execute measurement processing, and stores the waveform data D output from the measurement unit 2 in the storage unit 6. Let The control unit 5 corresponds to a “display control unit”, generates display data for displaying the signal waveform W and the like based on the waveform data D stored in the storage unit 6, and generates the display data Is output to the display unit 4 to display the waveform display screen 11 (signal waveform W, character information i, etc.) on the display unit 4. The storage unit 6 stores the calculation result of the control unit 5 and the waveform data D described above.

  Next, display processing (waveform display method) of the signal waveform W by the waveform display device 1 will be described with reference to the accompanying drawings.

  First, a signal input terminal (not shown) of each measurement channel of the measurement unit 2 and an observation target are connected to each other using a signal cable (not shown). Next, an operation condition setting screen (not shown) is displayed on the display unit 4 by operating the operation switch of the operation unit 3. For each measurement channel of the measurement unit 2, a low active input signal S (Low level = “ Active ”, signal transmitted / received as Hi (high) level =“ Disable ”, and Hi active input signal S (signal transmitted / received as Hi level =“ Active ”, Low level =“ Disable ”) Set whether each is input. In this case, as an example, it is set that the input signal S input to the measurement channels CH1 and CH4 is Hi active and the input signal S input to the measurement channels CH2 and CH3 is Low active. Further, at the time of this setting operation, a threshold value for determining that the level has been raised to Hi level and a threshold value for determining that the level has been lowered to Low level are set for each input signal S.

  In this case, in the waveform display device 1 of this example, the signal waveforms W1 and W4 based on the input signals S1 and S4 input to CH1 and CH4 are set as described above, and the “signal level of the input signal S” is set. Is set as “Condition A” and the signal waveforms W2 and W3 based on the input signals S2 and S3 input to CH2 and CH3 are “input signal S”. The condition that the signal level of the signal level decreases from the Hi level to the Low level is set as “Condition B”.

  Subsequently, the operation switch of the operation unit 3 is operated to close the operation condition setting screen (set the set condition). In response to this, the control unit 5 starts display processing of the signal waveform W. Specifically, the control unit 5 controls the measurement unit 2 to start measurement processing, stores the waveform data D output from the measurement unit 2 in the storage unit 6, and stores the waveform data D in the stored waveform data D Based on this, display data is generated and output to the display unit 4. Thereby, as shown in FIG. 2, the waveform display area 12 in which the signal waveforms W <b> 1 to W <b> 4 based on each input signal S are displayed is displayed in the waveform display screen 11 of the display unit 4. In this example, when the operation condition setting screen is closed, the input signals S1 and S4 are at the low level and the input signals S2 and S3 are at the high level (the input signals S1 to S4 are all in the “Disable” state). ). Further, in the actual waveform display device 1, as an example, there is a configuration / method for displaying the signal waveforms W1 to W4 in display colors different from each other and displaying the corresponding character information i in the same color as the display color of the signal waveform W. Although adopted, in order to facilitate understanding of the display of the signal waveform W and the character information i, the description of the difference in display color is omitted.

  In this case, in the waveform display device 1 of this example, when there is no portion satisfying the above “condition A” and “condition B” in the signal waveform W displayed on the waveform display screen 11, as an example, the signal waveform A configuration / display method is adopted in which character information i corresponding to W is displayed at the left end of the waveform display area 12 (the first position in the time axis direction in the waveform display area 12). Note that the position where the character information i is displayed when there is no portion satisfying the “condition A” or “condition B” in the signal waveform W is not limited to the above example, and the right end portion of the waveform display region 12. It is possible to adopt a configuration / method for displaying in (the latest position in the time axis direction in the waveform display area 12), the center of the waveform display area 12 (the center in the time axis direction in the waveform display area 12), or the like. it can.

  Further, in the waveform display device 1 of this example, the character information i (which indicates the channel number of the measurement channel (in this example, CH1, CH4) of the input signal S set to “Hi active” in the setting of the operating condition described above. In this example, the character string of the character information i1, i4) is overlined and the character indicating the channel number of the measurement channel (CH2, CH3 in this example) of the input signal S set to “Low active”. A configuration / method in which the character string of the information i (character information i2, i3 in this example) is underlined is employed.

  Further, in the waveform display device 1 of the present example, when the input signal S set to “Hi active” in the setting of the operation condition described above is at the Low level, and the input signal S set to “Low active” is at the Hi level. In other words, when the input signal S is in the “Disable” state, a configuration / method is adopted in which the character information i indicating the channel number of the measurement channel of the input signal S is highlighted. In FIGS. 3 to 6 and FIG. 7 to be referred to later, the character information i for normal display is indicated by a black character on a white background, and the character information i for reverse display is indicated by a white character on a black background.

  On the other hand, when a predetermined time elapses and, for example, the signal level of the input signal S1 rises from the Low level to the Hi level (changes from the “Disable” state to the “Active” state), it is shown in FIG. As described above, the control unit 5 displays the signal waveform W <b> 1 that changes from the Low level to the Hi level in the waveform display region 12. Further, the control unit 5 switches the character information i1 related to the input signal S1 from the reverse display to the normal display, and to the left of the changed part from the Low level to the Hi level in the signal waveform W1 (an example of "part satisfying the condition A"). It is displayed horizontally (an example of “display processing A”). Thereby, for the user who has seen the waveform display screen 11, the signal waveform W that has changed from the Low level to the Hi level is the signal waveform W1 based on the input signal S1 processed in the measurement channel “CH1”, and The fact that the input signal S1 has shifted to the “Active” state can be recognized without greatly moving the line of sight from the changed part.

  In this case, in the waveform display device 1 of this example, when a portion satisfying the above “condition A” or a portion satisfying the “condition B” exists in the signal waveform W, the signal waveform W is located on the right side of the portion satisfying the condition. When the character information i is displayed and there is no space for displaying the character information i on the right side of the part that satisfies the condition, the character information i is displayed on the left side of the part that satisfies the condition, and also on the left side of the part that satisfies the condition. When there is no space for displaying the character information i, the character information i is displayed on the portion satisfying the condition, and when there is no space for displaying the character information i on the portion satisfying the condition, Is used to display the character information i (an example of a configuration / display method in which “display position A” and “display position B” change in accordance with the state of the signal waveform W).

  Therefore, as shown in FIG. 3, since there is no space for displaying the character information i1 on the right side of the portion that satisfies the “condition A” in the signal waveform W1, the left side of the portion that satisfies the condition is displayed as “display position A”. As shown in FIG. 4, a space for displaying the character information i1 on the right side of the portion satisfying the “condition A” is generated in the signal waveform W1 after a predetermined time has elapsed from the state where the character information i1 is displayed. In some cases, the control unit 5 displays the signal waveform W1 on the right side of the change part (part satisfying the condition) from the Low level to the Hi level. As a result, even in this state, the signal waveform based on the input signal S1 obtained by processing the signal waveform W changed from the Low level to the Hi level in the measurement channel “CH1” for the user who has seen the waveform display screen 11. The fact that it is W1 can be recognized without greatly moving the line of sight from the change site.

  Further, in this waveform display device 1, as time further passes, as shown in FIG. 5, the change portion (the portion satisfying the condition) from the Low level to the Hi level in the signal waveform W is the right side in the waveform display region 12. When moving from the (latest position in the time axis direction) toward the left side (the earliest position in the time axis direction), the character information i is displayed on the right side of the change part together with the change part of the signal waveform W. The display area 12 can be moved. Accordingly, even in this state, the signal waveform W1 based on the input signal S1 obtained by processing the signal waveform W changed from the Low level to the Hi level in the measurement channel “CH1” is displayed to the user who has seen the waveform display screen 11. It can be recognized without greatly moving the line of sight from the change site.

  Further, when the signal level of the input signals S2 and S3 decreases from the Hi level to the Low level and the input signal S4 increases from the Low level to the Hi level, the control unit 5 changes from the Hi level to the Low level as shown in FIG. The signal waveforms W2 and W3 that change to the level and the signal waveform W4 that changes from the Low level to the Hi level are displayed in the waveform display region 12, respectively.

  In this case, in the example shown in the figure, since there is no space for displaying the character information i2 on the right side of the changed part from the Hi level to the Low level in the signal waveform W2 (an example of "part satisfying the condition B"), Character information i2 related to the input signal S2 is displayed on the left side of the change part in the signal waveform W2 (an example of “display processing B”), and the change part from the Hi level to the Low level in the signal waveform W3 (the part satisfying the condition B) Character information i3 related to the input signal S3 is displayed on the right side of (another example of “)” (another example of “display processing B”), and the change part from the low level to the Hi level in the signal waveform W4 (“condition A” Since there is no space for displaying the character information i4 on the right side of “an example of the part that satisfies”, the input signal S4 relates to the left side of the change part in the signal waveform W4. And to display the character information i4 (another example of the "display process A"). Therefore, also in the example in the figure, the signal waveform W in which the change portion exists is a signal waveform W2 based on the input signal S2 processed in the measurement channel “CH2”, and the input signal processed in the measurement channel “CH3”. The signal waveform W3 based on S3 and the signal waveform W4 based on the input signal S4 processed by the measurement channel “CH4” can be recognized without largely moving the line of sight from each change portion.

  On the other hand, when the time further elapses and the entire signal waveform W1 in the waveform display area 12 becomes only the Hi level portion as shown in FIG. The character information i1 is displayed at the earliest position of the part that satisfies the “condition A” of the signal waveform W1, that is, the position on the left side in the waveform display area 12. Therefore, also in this example, it can be easily recognized that the signal waveform W whose level is the Hi level is the signal waveform W1 based on the input signal S1 processed by the measurement channel “CH1”.

  When the input signal S2 changes from the Low level to the Hi level, the control unit 5 displays the signal waveform W2 that changes from the Low level to the Hi level in the waveform display area 12, as shown in FIG. In this case, as in the example shown in the figure, the signal waveform W2 in the waveform display region 12 has a changing portion that changes from the Low level to the Hi level and a changing portion that changes from the Hi level to the Low level. When not, the control unit 5 reversely displays the character information i2 on the right side of the change portion from the Low level to the Hi level in the signal waveform W2. Thereby, for the user who has seen the waveform display screen 11, the signal waveform W that has changed from the Low level to the Hi level is the signal waveform W2 based on the input signal S2 processed in the measurement channel “CH2”, and The fact that the input signal S2 has shifted to the “Disable” state can be recognized without greatly moving the line of sight from the change site.

  Further, as in the example shown in the figure, when there are a plurality of parts (parts changing from the Hi level to the Low level) that satisfy the “condition B” in the signal waveform W3, the control unit 5 The character information i3 is displayed with the vicinity of the first “part satisfying the condition B” among the parts satisfying “condition B” as “display position B”. As a result, the signal along the time axis direction (from the earliest position in the time axis direction, that is, from the left side of the waveform display region 12 to the latest position in the time axis direction, that is, toward the right side of the waveform display region 12). By visually recognizing the waveform W3, it can be easily identified in a short time that the signal waveform W is the signal waveform W3 based on the input signal S3 processed by the measurement channel “CH3”. Even when there are a plurality of parts satisfying “condition A” (parts changing from the Low level to the Hi level) in any one of the signal waveforms W, the control unit 5 determines that the plurality of “parts satisfying the condition A”. Character information i is displayed with the vicinity of the first “part satisfying condition A” as “display position A” (not shown).

  Further, as shown in the figure, since the input signal S4 changes in small increments between the Hi level and the Low level, the character information i4 is displayed on both the left side and the right side of each changed portion in the signal waveform W4. When there is no space for displaying the signal, the control unit 5 performs time axis direction among a plurality of changing parts (another example of "parts satisfying the condition A") that change from the Low level to the Hi level in the signal waveform W4. The character information i4 related to the input signal S4 is displayed on the earliest part, ie, the leftmost change part among the change parts. Therefore, even in such an example, the line of sight is greatly moved from the change portion to indicate that the signal waveform W in which the change portion exists is the signal waveform W4 based on the input signal S4 processed by the measurement channel “CH4”. Can be recognized without any problems.

  Although illustration is omitted, for example, when the input signal S1 changes in small increments between the Hi level and the Low level, the signal waveform W1 is changed and displayed as the signal waveform W4 shown in FIG. In this case, since there is no space for displaying the character information i1 above each change part in the signal waveform W1, the control unit 5 has a plurality of change parts (change from Low level to Hi level in the signal waveform W1). Character information i1 related to the input signal S1 is displayed below the first part in the time axis direction of “parts satisfying the condition A”, that is, the leftmost change part among the change parts. Let Therefore, even in such an example, the line of sight is greatly moved from the change portion to indicate that the signal waveform W in which the change portion exists is the signal waveform W1 based on the input signal S1 processed by the measurement channel “CH1”. Can be recognized without any problems.

  Thus, according to the waveform display device 1 and the waveform display method by the waveform display device 1, the “condition A” is present when there is a portion that satisfies the “condition A” in the signal waveform W displayed on the waveform display screen 11. “Display processing A” for displaying the character information i related to the input signal S at a predetermined “display position A” in the vicinity of the portion that satisfies the condition “condition B” is satisfied in the signal waveform W displayed on the waveform display screen 11. At least one of “display processing B” for displaying character information i related to the input signal S at a predetermined “display position B” in the vicinity of the part that satisfies “condition B” when the part exists (this example) In the waveform display screen 11 (waveform display region 12), a part that satisfies the “condition A” in the signal waveform W and a part that satisfies the “condition B” in the signal waveform W are executed. ), The character information i is displayed in the vicinity of the part satisfying the “condition A” or the part satisfying the “condition B”. As a result of making it possible to visually recognize the character information i without greatly moving the line of sight from a portion satisfying the condition “B”, it is possible to easily recognize the character waveform i without misidentifying the association between the signal waveform W and the character information i. .

  Further, according to the waveform display device 1 and the waveform display method by the waveform display device 1, when there are a plurality of portions that satisfy the “condition A” in the signal waveform W displayed on the waveform display screen 11 in the “display process A”. The character information i is displayed in the vicinity of the earliest part in the time axis direction among the plurality of parts, and the part satisfying the “condition B” in the signal waveform W displayed on the waveform display screen 11 in the “display process B”. By displaying the character information i in the vicinity of the earliest part in the time axis direction among the plural parts when there are a plurality of parts, the signal waveform W is generated from the earliest position in the time axis direction toward the latest position. On the waveform display screen 11 that is often viewed, the relationship between the signal waveform W and the character information i can be recognized smoothly.

  The configuration of the “waveform display device” and the content of the “waveform display method” are not limited to the configuration of the waveform display device 1 and the content of the waveform display method by the waveform display device 1. For example, the configuration / method for displaying the character information i in reverse when the corresponding input signal S is in the “Disable” state has been described as an example. However, instead of such a configuration / method, the corresponding input signal is displayed. When S is in the “Disable” state, the character information i is displayed in a light color, or when the corresponding input signal S is either “Active” state or “Disable” state. In addition, it is possible to adopt a configuration / method for displaying the character information i in a blinking manner. Even when such a configuration / method is adopted, the input corresponding to the user who has visually recognized the character information i is displayed in the same manner as in the above example in which the character information i is highlighted in the state of “Disable”. It is possible to reliably and easily recognize whether the signal S is in the “Active” state or the “Disable” state.

  In addition, as an example of the “signal waveform based on the display target signal”, the example of displaying the signal waveforms W1 to W4 (logic waveform) based on the binary control signal (logic signal) of the Hi level and the Low level has been described. Physical quantity (voltage value, current value, resistance value, power value, phase, temperature, humidity, luminance (luminous intensity), illuminance, rainfall, flow rate, etc.) signal (analog signal: hereinafter referred to as “input signal S”) 7) is measured as a “display target signal”, and a configuration / method for displaying the signal waveforms W1a and W2a based on the input signal S on the waveform display area 12 in the waveform display screen 11 as shown in FIG. You can also Since the configuration for displaying the signal waveforms W1a and W2a based on the input signal S is the same as the configuration of the waveform display device 1 described above, illustration and description thereof are omitted.

  In this case, in the following description, as an example, the signal level indicated by the one-dot chain line L1 corresponds to the “first signal level”, and the signal level indicated by the two-dot chain line L2 corresponds to the “second signal level”. In addition, as an example, the condition that the signal level of the input signal S that is the basis of the signal waveform W1a is higher than the signal level indicated by the alternate long and short dash line L1 corresponds to the “first condition”, and the basis of the signal waveform W1b It is assumed that the condition that the signal level of the input signal S becomes lower than the signal level indicated by the two-dot chain line L2 corresponds to the “second condition”. Therefore, in the example shown in the figure, the portion (the portion indicated by the arrow P1) having a level equal to or higher than the one-dot chain line L1 in the signal waveform W1a corresponds to the “part satisfying the first condition” and the two-dot chain line in the signal waveform W2a. A part (part indicated by an arrow P2) having a level equal to or lower than L2 corresponds to “a part satisfying the second condition”. As for the above-mentioned “first signal level (signal level indicated by alternate long and short dash line L1)” and “second signal level (signal level indicated by alternate long and two short dashes line L2)”, the display of signal waveforms W1a and W2a is given as an example. Prior to the processing, the user can arbitrarily set an operating condition setting screen (not shown) displayed.

  Further, in the waveform display device and the waveform display method for displaying the signal waveforms W1a and W2a (hereinafter also referred to as “signal waveform W” when not distinguished) based on the analog signal (input signal S), the waveform is displayed on the waveform display screen 11. As an example, when there is no portion satisfying the “first condition” and “second condition” in the signal waveform W, the character information i corresponding to the signal waveform W is displayed at the left end portion (waveform display) of the waveform display region 12. A configuration and a method of displaying at the earliest position in the time axis direction in the region 12 are employed (not shown). The position where the character information i is displayed when there is no portion satisfying the “first condition” or “second condition” in the signal waveform W is not limited to the above example, and the waveform display area 12 A configuration / method for displaying at the right end (the latest position in the time axis direction in the waveform display area 12), the center of the waveform display area 12 (the center in the time axis direction in the waveform display area 12), or the like is adopted. be able to.

  Furthermore, in the waveform display device and the display method for displaying the signal waveform W based on the analog signal (input signal S), there are portions that satisfy the “first condition” or portions that satisfy the “second condition” in the signal waveform W. When present, as an example, a process of displaying the character information i on the right side of the part that satisfies the condition is executed as “first display process” or “second display process”. When there is no space for displaying the character information i, the process for displaying the character information i on the left side of the part that satisfies the condition is executed, and there is no space for displaying the character information i on the left side of the part that satisfies the condition. Sometimes a process for displaying the character information i on a part that satisfies the condition is executed, and a part that satisfies the condition when there is no space for displaying the character information i on the part that satisfies the condition A configuration / method for executing processing for displaying character information i below is adopted (a configuration / display method in which the “first display position” and the “second display position” change according to the state of the signal waveform W). Example).

  Therefore, in the example shown in the figure, the character information i1 and i2 are respectively displayed on the right side (an example of “first display position” and “second display position”) of the “part satisfying the condition” in the signal waveforms W1a and W2a. The Thereby, for the user who has seen the waveform display screen 11, the signal waveform W whose signal level has risen above the one-dot chain line L1 is the signal waveform W1a based on the input signal S processed in the measurement channel “CH1”. And the fact that the signal waveform W whose signal level has dropped below the two-dot chain line L2 is the signal waveform W2a based on the input signal S processed in the measurement channel “CH2” is moved largely from the changing part. Can be recognized.

  Although different from the example shown in the figure, there are a plurality of parts satisfying the “first condition” in the signal waveform W1a (parts satisfying the condition that the input signal S rises above the level of the one-dot chain line L1). In some cases, the control unit 5 displays the character information i1 in the vicinity of the first “part satisfying the first condition” among the “parts satisfying the first condition” as the “first display position” (FIG. Not shown). Similarly, when there are a plurality of parts that satisfy the “second condition” in the signal waveform W1b (parts that satisfy the condition that the input signal S falls below the level of the two-dot chain line L2), the control unit 5 The character information i2 is displayed as a “second display position” in the vicinity of the first “part satisfying the second condition” among the “parts satisfying the second condition” (not shown).

  As a result, the signal along the time axis direction (from the earliest position in the time axis direction, that is, from the left side of the waveform display region 12 to the latest position in the time axis direction, that is, toward the right side of the waveform display region 12). By visually recognizing the waveform W1a, it can be easily identified in a short time that the signal waveform W is the signal waveform W1a based on the input signal S processed by the measurement channel of “CH1”. Further, by visually recognizing the signal waveform W2a along the time axis direction, it is easily identified in a short time that the signal waveform W is the signal waveform W2a based on the input signal S processed by the measurement channel “CH2”. can do.

  According to the waveform display device adopting such a configuration and the waveform display method thereof, the “first condition” is set when there is a portion that satisfies the “first condition” in the signal waveform W displayed on the waveform display screen 11. “First display processing” for displaying character information i related to the input signal S at a predetermined “first display position” in the vicinity of the portion to be satisfied, and “second condition” in the signal waveform W displayed on the waveform display screen 11 Among the “second display processing” for displaying character information i related to the input signal S at a predetermined “second display position” in the vicinity of a portion satisfying the “second condition” when there is a portion satisfying the “second condition” By executing at least one (both in the above example), a portion that satisfies the “first condition” in the signal waveform W and a portion that satisfies the “second condition” in the signal waveform W are within the waveform display screen 11 (wave The character information i is displayed in the vicinity of the part satisfying the “first condition” or the part satisfying the “second condition” regardless of the position in the display area 12). As a result of making it possible to visually recognize the character information i without greatly moving the line of sight from the portion satisfying the “condition” or the portion satisfying the “second condition”, these are not misidentified as the association between the signal waveform W and the character information i. Can be easily recognized.

  Further, according to the waveform display device adopting such a configuration and the waveform display method thereof, there are a plurality of portions that satisfy the “first condition” in the signal waveform W displayed on the waveform display screen 11 in the “first display process”. The character information i is displayed in the vicinity of the earliest part in the time axis direction among the plurality of parts when present, and the signal waveform W displayed on the waveform display screen 11 in the “second display process” is set to “second condition”. ”Is displayed in the vicinity of the earliest part in the time axis direction of the plurality of parts, so that the position from the earliest position in the time axis direction to the latest position is displayed. In the waveform display screen 11 in which the signal waveform W is often viewed, the relationship between the signal waveform W and the character information i can be recognized smoothly.

  Further, an example of a configuration in which character information i1 to i4, i1, i2 (measurement channel number display) including character strings “CH1” to “CH4” indicating the measurement channel numbers of the measurement unit 2 is displayed as “character information”. However, the “character information relating to the display target signal” is not limited to this, and as an example, a character indicating the name of the place where the input signal S is extracted, such as “signal line 1” and “distribution panel A”. The character string indicating the name of the output destination (or input destination) of the signal that is the basis of the input signal S, such as “entrance sensor” and “exit sensor”, is displayed as “character information”. "Can be displayed.

  In addition, the waveform display device 1 integrally including the measurement unit 2 has been described as an example. However, the configuration of the waveform display device is not limited to this, and the waveform data D generated by the measurement device as an external device is included in the waveform display device 1. A configuration (not shown) for displaying the signal waveform W based thereon can also be adopted. Furthermore, although the waveform display device 1 integrally provided with the display unit 4 has been described as an example, the configuration of the waveform display device is not limited to this, and the configuration in which the signal waveform W is displayed on the display device as an external device. (Not shown) can also be adopted.

DESCRIPTION OF SYMBOLS 1 Waveform display apparatus 4 Display part 5 Control part 6 Storage part 11 Waveform display screen 12 Waveform display area D1-D4 Waveform data i1-i4 Character information S1-S4 Input signal W1-W4, W1a, W2a Signal waveform

Claims (6)

A waveform display device including a display control unit that correlates a signal waveform based on a display target signal and character information defined in advance relating to the display target signal on a waveform display screen,
When the display control unit has a portion that satisfies the condition A that the signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen rises to a predetermined high level, the condition A Display processing A for displaying the character information related to the display target signal at a predetermined display position A in the vicinity of a portion satisfying the condition, and the signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen A display that displays the character information related to the display target signal at a predetermined display position B in the vicinity of the part that satisfies the condition B when there is a part that satisfies the condition B that is reduced to a predetermined low level. A waveform display device that executes at least one of processing B and processing B.   When there are a plurality of parts satisfying the condition A in the signal waveform to be displayed on the waveform display screen during the display process A, the display control unit determines the earliest part in the time axis direction of the plurality of parts. When the character information is displayed with the vicinity as the display position A and the signal waveform displayed on the waveform display screen in the display process B includes a plurality of parts satisfying the condition B, the time among the parts The waveform display device according to claim 1, wherein the character information is displayed with the vicinity of the earliest part in the axial direction as the display position B. A waveform display device including a display control unit that correlates a signal waveform based on a display target signal and character information defined in advance relating to the display target signal on a waveform display screen,
The display control unit has a portion that satisfies a first condition that a signal level of the display target signal corresponding to the signal waveform to be displayed on the waveform display screen rises to a predetermined first signal level or higher. Corresponding to the first display processing for displaying the character information related to the display target signal at a first display position defined in advance in the vicinity of the part that satisfies the first condition, and the signal waveform displayed on the waveform display screen. When there is a part that satisfies the second condition that the signal level of the display target signal falls below a predetermined second signal level, a second predetermined display position in the vicinity of the part that satisfies the second condition A waveform display device that executes at least one of a second display process for displaying the character information relating to the display target signal.   The display control unit, when there are a plurality of parts that satisfy the first condition in the signal waveform to be displayed on the waveform display screen in the first display processing, the earliest in the time axis direction of the plurality of parts The character information is displayed with the vicinity of a part as the first display position, and the plurality of parts satisfying the second condition exist in the signal waveform displayed on the waveform display screen in the second display process. The waveform display device according to claim 3, wherein the character information is displayed with the vicinity of the earliest part in the time axis direction among the parts as the second display position. A waveform display method for displaying a signal waveform based on a display target signal and predetermined character information on the display target signal on a waveform display screen in association with each other,
When there is a part that satisfies the condition A that the signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen rises to a predetermined high level, the vicinity of the part that satisfies the condition A is present. A display process A for displaying the character information relating to the display target signal at a predetermined display position A, and a signal level of the display target signal corresponding to the signal waveform to be displayed on the waveform display screen. A display process B for displaying the character information related to the display target signal at a predetermined display position B in the vicinity of the part that satisfies the condition B when there is a part that satisfies the condition B that is reduced to the level. Waveform display method that executes at least one of them. A waveform display method for displaying a signal waveform based on a display target signal and predetermined character information on the display target signal on a waveform display screen in association with each other,
When there is a portion that satisfies the first condition that the signal level of the display target signal corresponding to the signal waveform displayed on the waveform display screen rises to a predetermined first signal level or higher, the first condition is satisfied. A first display process for displaying the character information relating to the display target signal at a first display position defined in advance in the vicinity of the portion to be satisfied, and a signal of the display target signal corresponding to the signal waveform displayed on the waveform display screen When there is a part that satisfies the second condition that the level falls below a second signal level defined in advance, the display target signal is related to the second display position defined in the vicinity of the part that satisfies the second condition. A waveform display method for executing at least one of a second display process for displaying the character information.

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