JP7707795B2 - DISPLAY CONTROL DEVICE, DISPLAY CONTROL METHOD, AND DISPLAY CONTROL PROGRAM - Google Patents

Description

The present invention relates to a display control device, etc.

Active sonar obtains information about underwater targets by transmitting a signal from a transmitter and receiving the signal reflected by the underwater target with a receiver. After receiving the reflected signal, active sonar processes the signal and displays information about the target in a form that is visually easy for humans to understand, such as a B-scope, ping history (PH (Ping History)), or A-scope. Ping history will be discussed later.

Figure 20 shows an example of a B-scope display. The vertical axis of the B-scope indicates the vertical distance from the measuring device. The horizontal axis indicates the horizontal direction with the measuring device at the center. In addition, the signal level of the received signal (reflected signal) is reflected in the luminance (brightness) of the B-scope.

In the B-scan, the bearing is divided into equal sectors. Figure 20 also shows sector 2 selected by the arrow cursor.

Figure 21 shows an example of a ping history (PH) display. PH represents the history of B-scopes in a specified direction. PH is generated based on the B-scope. PH compresses the B-scope in the azimuth direction for a sector selected by the user on the B-scope, and arranges the compressed B-scopes in chronological order from the past to the present. In this way, PH indicates the continuity of the received signal for the target sector. In PH, the signal level of the received signal is reflected in the brightness, just like the B-scope.

Figure 22 shows an example of the A-scope display. The A-scope is displayed for the portion selected by the user on the B-scope. The vertical axis of the A-scope indicates the vertical distance from the measuring device. The horizontal axis indicates the signal level of the received signal. Figure 22 shows an example of the A-scope display for the portion enclosed in a thick-line rectangle on the B-scope shown in Figure 20.

The user uses the B-scope to discover a signal that appears to be a reflection from a target. The user then uses the PH to check the target's movement corresponding to time, and determines whether the discovered signal is a reflection from a target or a non-target. Note that a target is an object that the user wishes to search for using active sonar, and a non-target is an object other than the target.

In the PH display, even if there is only one target, the display showing the reflected signal from the target may be separated into two or more. From here on, the display showing the reflected signal from the target will be called the target display. Also, the display showing the reflected signal from a non-target will be called the non-target display. Also, the display showing the reflected signal from an object, regardless of whether it is a target or non-target, will be called the signal display.

Figure 23 shows examples of the B-scope and PH displays when the target display is split into two. In the example of Figure 23, the target display is split into two due to the target's attitude. When the target's attitude has a length in the distance direction from the measuring device, the distance and direction from the measuring device differ depending on the part of the target. When the transmission signal pulse is long or the resolution is coarse, the target display on the B-scope will be one. However, when the transmission pulse is short or the resolution is fine, the target display on the B-scope may be split, as shown in Figure 23. When the target display on the B-scope is split, the target display is also split on the PH, because the PH is a compressed version of the B-scope.

Figure 24 shows another example of the B-scope and PH display when the target display is split into two. In the example of Figure 24, the target display on the B-scope spans sector 1 and sector 2, causing the target display on the PH to be split into two.

Normally, when there is one target, the target display on the PH will also be one. Therefore, when the target display on the PH is separated into two or more parts, the user must determine whether there are multiple targets, or whether the target display of a single target is separated. To make this determination, the user must check, for example, by referring to the PH of an adjacent sector. Figure 25 is a diagram that shows a schematic diagram of referencing an adjacent sector. In the example of Figure 25, the target display is separated in the PH for sector 2. Therefore, the user can determine that there is one target by referring to the PH for sector 1.

As shown in Figures 23 and 24, when the target display is separated into two or more parts, it takes the user time to refer to the PH of the neighboring sector, which reduces the speed of target determination. In addition, when the target display is separated into two or more parts, it may be recognized that there are two or more objects when there is actually one target. As a result, the displayed signal display may be erroneously determined not to be a target. In other words, the displayed signal display may be erroneously determined not to be a target display (non-target display). For example, when a target of a certain size is being searched for, it may be erroneously determined that there are two or more small non-target objects.

General technology related to active sonar displays is described in Patent Document 1.

JP 2018-136204 A

One possible method to resolve the above-mentioned inconvenience is to interpolate the separation of the target display of the PH. A common method for interpolating the separation of the target display is to interpolate the separated portion with the same brightness as the adjacent sector. FIG. 26 shows a schematic diagram of a method of performing interpolation with the same brightness as the adjacent sector. In the example of FIG. 26, the PH of sector 2 is interpolated using the PH of sector 1. However, as shown in FIG. 26, this method also interpolates the non-target displays that exist in the adjacent sectors. This increases the number of erroneous judgments when the user judges whether the object is a target or a non-target. Furthermore, the target display is buried in the non-target display, which increases the judgment burden on the user.

In addition, if the target display is separated due to the target's attitude, the received signal itself is also separated. Therefore, in this case, this method cannot interpolate the separated parts even by referring to adjacent sectors. As a result, the judgment burden on the user increases.

The object of the present invention is to provide a display control device etc. that can reduce the burden on the user to judge targets.

In one aspect of the present invention, the display control device includes an A-scope generating unit that generates A-scope information for displaying an A-scope in a predetermined direction on a display means based on a received signal received by a sensor, a PH generating unit that generates PH information for displaying a B-scope history representing a history of a B-scope in the predetermined direction on the display means based on the received signal, an interpolation unit that measures a target length, which is the length of the target, based on a target display that is a display showing the received signal related to the target in the A-scope based on the A-scope information, measures a display length, which is the length of the target display in the B-scope history based on the PH information, and, if the display length is shorter than the target length, interpolates the brightness of a separated portion of the target display in the B-scope history, and a display control unit that causes the display means to display a screen including the B-scope history after interpolation based on the PH information about the B-scope history after interpolation.

In another aspect of the present invention, the display control method generates A-scope information for displaying an A-scope in a predetermined direction on a display means based on a received signal received by a sensor, generates PH information for displaying a B-scope history representing the history of a B-scope in the predetermined direction on the display means based on the received signal, measures a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target in the A-scope based on the A-scope information, measures a display length, which is the length of the target display in the B-scope history based on the PH information, and if the display length is shorter than the target length, interpolates the brightness of the separated portion of the target display in the B-scope history, and displays a screen including the interpolated B-scope history on the display means based on the PH information for the B-scope history after the interpolation.

In another aspect of the present invention, the display control program causes the computer to realize an A-scope generation function that generates A-scope information for displaying an A-scope in a predetermined direction on a display means based on a received signal received by a sensor, a PH generation function that generates PH information for displaying a B-scope history representing the history of a B-scope in the predetermined direction on the display means based on the received signal, an interpolation function that measures a target length, which is the length of the target, based on a target display that is a display showing the received signal related to the target in the A-scope based on the A-scope information, measures a display length, which is the length of the target display in the B-scope history based on the PH information, and, if the display length is shorter than the target length, interpolates the brightness of a separated portion of the target display in the B-scope history, and a display control function that causes the display means to display a screen including the B-scope history after interpolation based on PH information about the B-scope history after interpolation.

The present invention makes it possible to reduce the burden on users in determining targets.

1 is a diagram illustrating an example of a configuration of a display control device according to a first embodiment of the present invention. FIG. 4 is a diagram illustrating an example of an operation flow of the display control device according to the first embodiment of the present invention. FIG. 11 is a diagram illustrating a connection example related to a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of a configuration of a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an operation flow of a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an operational flow regarding a target extraction process of the display control device according to the second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an operational flow regarding a separation confirmation process of the display control device according to the second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an operation flow relating to a separation and interpolation process of a display control device according to a second embodiment of the present invention. 13 is a diagram showing an outline of a comparison between a signal level and a threshold value by a display control device according to a second embodiment of the present invention. FIG. FIG. 11 is a diagram showing an outline of a comparison between a length _X0 and a specified value _XD by a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram showing an outline of a comparison between a length _X0 and a specified value _XD by a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram showing an outline of a comparison between a length _X0 and a specified value _XD by a display control device according to a second embodiment of the present invention. 11 is a diagram showing an outline of measurement of a target length by a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram showing an outline of measurement of a target length by a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram showing an outline of measurement of a display length by a display control device according to a second embodiment of the present invention. FIG. 13 is a diagram illustrating an outline of a separation confirmation process of a display control device according to a second embodiment of the present invention. 13 is a diagram illustrating an outline of a separation confirmation process of a display control device according to a second embodiment of the present invention. 13 is a diagram showing an outline of detection of a start point G _S and an end point G _F by a display control device according to a second embodiment of the present invention. FIG. FIG. 11 is a diagram showing an outline of interpolation by a display control device according to a second embodiment of the present invention. FIG. 11 is a diagram showing an outline of interpolation by a display control device according to a second embodiment of the present invention. 13A to 13C are diagrams illustrating an example of a PH before and after interpolation by a display control device according to a second embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a hardware configuration according to each embodiment of the present invention. FIG. 2 is a diagram showing an example of a B-scope. FIG. 13 is a diagram showing an example of PH. FIG. 1 is a diagram showing an example of an A-scope. FIG. 13 is a diagram showing an example of a B-scope and a PH when the target display is separated into two. FIG. 13 is a diagram showing another example of the B-scope and PH when the target display is separated into two. FIG. 2 is a diagram illustrating a schematic diagram of referencing of adjacent sectors. FIG. 10 is a diagram illustrating a method of performing interpolation using the luminance of adjacent sectors.

[First embodiment]
A first embodiment of the present invention will be described. A specific example of the display control device 10 in the first embodiment is a display control device 20 in a second embodiment, which will be described later.

Figure 1 shows an example of the configuration of a display control device 10 of this embodiment. The display control device 10 of this embodiment includes an A-scope generating unit 11, a PH generating unit 12, an interpolation unit 13, and a display control unit 14.

The A-scope generating unit 11 generates A-scope information for displaying an A-scope in a specified direction on the display means based on the received signal received by the sensor.

The PH generation unit 12 generates PH information for displaying a ping history in a specified direction on the display means based on the received signal. Here, the ping history refers to a B-scope history that represents the history of the B-scope in the specified direction. The specified direction is, for example, specified by the user.

The interpolation unit 13 measures a target length, which is the length of the target, based on the target display on the A-scope based on the A-scope information. The target display is a display that shows a received signal related to the target. The interpolation unit 13 also measures a display length, which is the length of the target display in the ping history based on the PH information. Then, when the display length is shorter than the target length, the interpolation unit 13 interpolates the brightness of the separated portion of the target display in the ping history.

The display control unit 14 causes the display means to display a screen including the interpolated ping history based on the PH information about the interpolated ping history.

Next, FIG. 2 shows an example of the operation flow of the display control device 10 of this embodiment.

The A-scope generating unit 11 generates A-scope information in a specified direction based on the received signal received by the sensor (step S101).

The PH generation unit 12 generates PH information for a specified direction based on the received signal (step S102).

The interpolation unit 13 measures the target length based on the target display in the A-scope. The interpolation unit 13 also measures the display length, which is the length of the target display in the ping history. If the display length is shorter than the target length, the interpolation unit 13 interpolates the brightness of the separated portion of the target display in the ping history (step S103).

The display control unit 14 causes the display means to display a screen including the interpolated ping history based on the PH information about the interpolated ping history (step S104).

Normally, the target display on the B-scope has a certain degree of spread in the azimuth direction. Therefore, even if the target display for one target moves to the next sector, part of the target display remains in the original sector. In this case, even if there is a separated part in the target display in the ping history (PH) in the original sector, the target display will still be present on the A-scope. Therefore, the A-scope is used to interpolate the separated part of the PH.

As described above, in the first embodiment of the present invention, the display control device 10 includes an A-scope generating unit 11, a PH generating unit 12, an interpolation unit 13, and a display control unit 14. The A-scope generating unit 11 generates A-scope information based on a reception signal received by a sensor. The PH generating unit 12 generates PH information based on the reception signal. The interpolation unit 13 measures a target length, which is the length of a target, based on a target display in the A-scope based on the A-scope information. The interpolation unit 13 also measures a display length, which is the length of a target display in the ping history based on the PH information. Then, when the display length is shorter than the target length, the interpolation unit 13 interpolates the brightness of a separated portion of the target display in the ping history. The display control unit 14 causes a screen including the interpolated ping history to be displayed on the display means based on the PH information for the interpolated ping history.

If the display length is shorter than the target length, it is considered that the target display for one target is separated. If the target length is equal to or greater than the display length, it is considered that the target display for one target is not separated. With the above configuration, the display control device 10 will interpolate the separated part of the target display in the ping history when it is estimated that the target display for one target is separated. As a result, the user will no longer need to perform tasks such as referring to the ping history of an adjacent sector to determine whether or not it is a target. This makes it possible to reduce the user's burden of determining targets.

[Second embodiment]
Next, a display control device 20 according to a second embodiment of the present invention will be described.

First, FIG. 3 shows an example of connections of the display control device 20 of this embodiment. The display control device 20 of this embodiment is connected to the sensor 50. The display control device 20 is also connected to the display means 60.

The sensor 50 receives a signal transmitted from a transmitter (not shown) and reflected by an object. The received signal received by the sensor 50 is input to the display control device 20. The display means 60 is an output device such as a display.

Next, FIG. 4 shows an example of the configuration of the display control device 20 of this embodiment. The display control device 20 includes an A-scope generating unit 21, a PH generating unit 22, an interpolation unit 23, and a display control unit 24.

The A-scope generating unit 21 generates A-scope information based on the received signal. The received signal is input to the A-scope generating unit 21 and the PH generating unit 22 via the sensor 50. The A-scope information is information for the display means 60 to display the A-scope. The A-scope information is also information about a specified direction. For example, direction information indicating a specified direction is input to the A-scope generating unit 21 and the PH generating unit 22 in response to a user's operation on the B-scope displayed on the display means 60.

The PH generating unit 22 generates PH information based on the received signal. The PH information is information that the display means 60 uses to display the ping history (PH). Like the A-scope information, the PH information is information about a specific direction.

The interpolation unit 23 uses the A-scope information to interpolate the PH information. The specific interpolation method will be described later.

The display control unit 24 causes the display means 60 to display a screen including the PH based on the PH information.

Next, an example of the operation flow of the display control device 20 of this embodiment is shown using FIG.

The A-scope generating unit 21 generates A-scope information based on the received signal (step S101). The PH generating unit 22 generates PH information based on the received signal (step S102). The interpolation unit 23 uses the A-scope information to interpolate the PH information (step S103). A specific method of interpolation will be described later. The display control unit 24 causes the display means 60 to display a screen including PH based on the PH information (step S104).

Next, FIG. 5 shows an example of the operation flow of interpolation in the interpolation unit 23.

The interpolation unit 23 first performs a target extraction process (step S201). The target extraction process is a process of identifying a target display on the A-scope based on the A-scope information, and measuring the length of the target on the distance axis of the A-scope based on the identified target display. Note that a display showing a reflected signal from a target is called a target display. Also, a display showing a reflected signal from a non-target is called a non-target display. Also, a display showing a reflected signal from an object, regardless of whether it is a target or a non-target, is called a signal display.

Next, the interpolation unit 23 performs a separation confirmation process (step S202). The separation confirmation process is a process for determining whether the target display is separated on the PH.

Then, the interpolation unit 23 performs a separation interpolation process (step S203). The separation interpolation process is a process for interpolating the separated portion when the target display is separated on the PH.

Next, FIG. 6 shows an example of the operation flow of the target extraction process in the interpolation unit 23. The target extraction process is a process of identifying a target display on the A-scope based on the A-scope information, and measuring the length of the target on the distance axis of the A-scope based on the identified target display.

First, the interpolation unit 23 compares the signal level of the A-scope signal display with a threshold value. Then, the interpolation unit 23 extracts the signal display whose signal level is equal to or greater than the threshold value (step S301). Figure 9 shows a schematic diagram of the comparison between the signal level and the threshold value.

Next, when there are intervals between the signal displays on the A-scope whose signal levels are equal to or higher than the threshold (YES in step S302), the interpolation unit 23 measures the length _X0 of each of the intervals between the signal displays whose signal levels are equal to or higher than the threshold, and then compares the length _X0 of each interval with a specified value _XD .

If all the lengths _X0 exceed the specified value _XD (YES in step S303), it is estimated that multiple objects exist. Therefore, the interpolation unit 23 does not perform steps S202 and S203 in Fig. 5. In this case, the interpolation unit 23 outputs the PH information input from the PH generation unit 22 to the display control unit 24 without performing interpolation on the PH information.

10A, 10B, and 10C are schematic diagrams showing comparisons between length _X0 and a specified value _XD . Fig. 10A shows a case where there is one or more lengths _X0 that are equal to or less than the specified value _XD . Fig. 10B shows a case where all lengths _X0 exceed the specified value _XD . Fig. 10C shows a case where there is no gap in the signal above the threshold.

If there is one or more lengths _X0 that are equal to or less than the specified value _XD (NO in step S303), the interpolation unit 23 measures a target length _X1 (step S304). The target length _X1 is the length of the target on the A-scope. The interpolation unit 23 identifies a target indication from the signal indications extracted in step S301, and measures the length of the target.

FIG. 11 shows a schematic diagram of the measurement of the target length when there is one or more lengths _X0 that are less than or equal to the specified value _XD .

First, the interpolation unit 23 extracts the point with the maximum signal level (signal maximum point) for each of the signal displays extracted in step S301 in FIG. 6 ((1) in FIG. 11). Next, the interpolation unit 23 extracts the signal maximum point with the maximum signal level from the extracted signal maximum points ((2) in FIG. 11). In addition, the interpolation unit 23 extracts the signal maximum point with the higher signal level from the signal maximum points on both sides of the signal maximum point with the maximum signal level ((3) in FIG. 11).

Then, the interpolation unit 23 identifies the signal display including the signal maximum point extracted in (2) and (3) as the target display. Note that, hereinafter, of the target displays extracted in (2) and (3), the one closer to the measuring instrument (sensor 50) is called the near-distance target display, and the one farther away is called the far-distance target display.

Next, the interpolation unit 23 sets the intersection point of the close target display and the threshold value in step S301 as the start point of the target display, and sets the position of the start point on the distance axis of the A-scope as _XS . The interpolation unit 23 also sets the intersection point of the long target display and the threshold value in step S301 as the end point of the target display, and sets the position of the end point on the distance axis of the A-scope as _XF ((4) in FIG. 11). The interpolation unit 23 then sets the length between _XF and _XS as the target length _X1 ((5) in FIG. 11).

If there is no gap between the signal displays whose signal levels are equal to or greater than the threshold on the A-scope (NO in step S302), the interpolation unit 23 measures the target length _X1 as follows (step S304). Fig. 12 shows a schematic diagram of the measurement of the target length when there is no gap between the signal displays extracted in step S301.

The interpolation unit 23 specifies the signal display extracted in step S301 as the target display. Then, the intersection point between the target display and the threshold value in step S301 is set as the start point of the target display, and the distance corresponding to the start point on the distance axis of the A-scope is set as _XS . The interpolation unit 23 also specifies the intersection point between the target display and the threshold value in step S301 as the end point of the target display, and the distance corresponding to the end point on the distance axis of the A-scope is set as _XF (FIG. 12 (1)). Then, the interpolation unit 23 specifies the difference between the distance _XF and the distance _XS as the target length _X1 (FIG. 12 (2)).

Next, the interpolation unit 23 measures the display length _Yi in the PH based on the PH information of the specified direction (sector) and the distances _Xs and _Xf (step S305). The display length is the length of the signal display on the distance axis of the PH for the signal display that exists between the distances _Xs and _Xf on the distance axis of the PH. In addition, the total display length Y, which is the sum of the display lengths, is calculated.

Fig. 13 shows a schematic diagram of the measurement of the display length. In the example shown in Fig. 13, two signal displays exist between distance _Xs and distance _Xf on the PH. Therefore, the interpolation unit 23 measures the length _Y1 and the length _Y2 of these two signal displays on the distance axis of the PH. When n signals exist between distance _Xs and distance _Xf on the PH, the interpolation unit 23 measures the display length _Yi (i is an integer from 1 to n) of each.

Next, FIG. 7 shows an example of the operation flow of the separation confirmation process in the interpolation unit 23. The operation flow in FIG. 7 corresponds to step S202 in FIG. 5. The separation confirmation process is a process for determining whether or not the target display is separated on the PH.

First, the interpolation unit 23 compares the target length _X1 with the total display length Y. Then, if the target length X1 is longer than the total display length Y (YES in step S401), it is estimated that the target display on the PH is short relative to the size of the target. In other words, it is estimated that the target display on the PH is separated. Therefore, the interpolation unit 23 performs a separation interpolation process (step S203 in FIG. 5, step S501 in FIG. 8).

On the other hand, if the target length _X1 is equal to or less than the total display length Y (NO in step S401), it is estimated that the target display in PH is not separated. Therefore, the interpolation unit 23 does not perform the separation interpolation process.

FIGS. 14A and 14B show schematic diagrams of the separation confirmation process. In the case of FIG. 14A, the interpolation unit 23 performs the separation interpolation process. In the case of FIG. 14B, the interpolation unit 23 does not perform the separation interpolation process.

Next, FIG. 8 shows an example of the operation flow of the separation interpolation process in the interpolation unit 23. The separation interpolation process is a process for interpolating the separated parts of the PH target display. The operation flow in FIG. 8 corresponds to step S203 in FIG. 5.

The interpolation unit 23 first detects the start point G _S and the end point G _F of the separated portion (step S501). Fig. 15 shows a schematic diagram relating to the detection of the start point G _S and the end point G _F.

Then, if there is a gap between the target displays on the A-scope (YES in step S502), the separation of the target displays in the PH is considered to be due to the target's attitude, not due to the target displays straddling adjacent sectors. Therefore, in this case, the interpolation unit 23 interpolates the luminance between the start point G 1 _S and the end point G 2 _F with an arbitrary luminance (step S503). The arbitrary luminance is, for example, the luminance of the start point G 1 _S or the end point G 2 _F. For example, the interpolation unit 23 interpolates the luminance between the start point G 1 _S and the end point G 2 _F with the smaller luminance of the luminance of the start point G 1 _S or the end point G 2 _F. FIG. 16 shows a schematic diagram of the interpolation in this case.

Also, if there is no gap in the target display on the A-scope (NO in step S502), the separation of the target display in PH is considered to be caused by the target display straddling adjacent sectors. Therefore, in this case, the interpolation unit 23 interpolates the luminance of the separated part of PH with the luminance in the range from the start point G _S to the end point G _F in the adjacent sector (step S504). Figure 17 shows a schematic diagram of the interpolation in this case.

Figure 18 shows an example of PH before and after interpolation by the display control device 20 of this embodiment. The display control device 20 identifies the target display based on the A-scope and measures the length of the target (target length). Then, when the length of the target display in PH (display length) is shorter than the target length, the display control device 20 interpolates the separated part of the target display in PH. Therefore, it is possible to interpolate the separated part of the target display while not interpolating the non-target displays. As a result, it is possible to prevent an increase in the judgment burden on the user caused by the target display being buried in the non-target displays.

The display control device 20 also interpolates the separated parts of the target display of the PH. This eliminates the need for the user to refer to the PH of the neighboring sector. As a result, the user's judgment load for the target can be reduced and the judgment speed can be improved.

In addition, when the PH target display is separated but the separated portion cannot be interpolated using adjacent sectors, the display control device 20 performs interpolation at an arbitrary brightness. Therefore, even if the received signal itself is separated due to the target's attitude, etc., it is possible to perform interpolation. As a result, the user's judgment load for the target can be reduced and the judgment speed can be improved.

As described above, in the first embodiment of the present invention, the display control device 20 includes an A-scope generating unit 21, a PH generating unit 22, an interpolation unit 23, and a display control unit 24. The A-scope generating unit 21 generates A-scope information based on a reception signal received by a sensor. The PH generating unit 22 generates PH information based on the reception signal. The interpolation unit 23 measures a target length, which is the length of a target, based on a target display in the A-scope based on the A-scope information. The interpolation unit 23 also measures a display length, which is the length of a target display in the ping history based on the PH information. Then, when the display length is shorter than the target length, the interpolation unit 23 interpolates the brightness of a separated portion of the target display in the ping history. The display control unit 24 causes a screen including the interpolated ping history to be displayed on the display means based on the PH information for the interpolated ping history.

If the display length is shorter than the target length, it is considered that the target display for one target is separated. If the target length is equal to or greater than the display length, it is considered that the target display for one target is not separated. With the above configuration, the display control device 20 will interpolate the separated part of the target display in the ping history when it is estimated that the target display for one target is separated. As a result, the user will no longer need to perform tasks such as referring to the ping history of an adjacent sector to determine whether or not it is a target. This makes it possible to reduce the user's burden of determining targets.

In addition, the interpolation unit 23 of the display control device 20 of this embodiment interpolates the luminance of the separated portion at an arbitrary luminance when there is a gap in the target display on the A-scope. When there is a gap in the target display on the A-scope, the separated portion cannot be interpolated even by referring to the PH of an adjacent sector. In such a case, the interpolation unit 23 of this embodiment performs interpolation at an arbitrary luminance, so that the separated portion of the target display can be interpolated. This makes it possible to reduce the user's judgment burden regarding the target even when the separation of the target display cannot be interpolated using the PH of an adjacent sector.

In addition, when there is no gap in the target display on the A-scope, the interpolation unit 23 interpolates the brightness of the separated part with the brightness of the ping history of the adjacent direction. As a result, when the interpolation unit 23 can interpolate the separated part of the PH target display using the PH of the adjacent direction, it can perform the interpolation using the PH of the adjacent direction. This makes it possible to reduce the user's judgment burden regarding targets.

The interpolation unit 23 also uses an A-scope based on the A-scope information to identify the target display on the A-scope. This makes it possible to interpolate the PH separation portion for the identified target display and not to interpolate for the non-target display. This makes it possible to reduce the user's burden of judging the target object.

The interpolation unit 23 also uses the A-scope to extract signal displays whose signal levels are equal to or greater than a threshold from among the signal displays, which are displays showing received signals. If the lengths of the intervals between the extracted signal displays are all equal to or greater than a specified value, the interpolation unit 23 sets the ping history before the interpolation to the ping history after the interpolation.

If the length of the intervals between the extracted signal displays is equal to or greater than a specified value, it is estimated that there are multiple targets. In other words, in this case, there is no need to interpolate the separated parts of the PH. When it is estimated that there are multiple targets, the interpolation unit 23 sets the ping history before the interpolation as the ping history after the interpolation. This makes it possible to reduce the processing load on the display control device 20 related to the interpolation of the PH.

In addition, the interpolation unit 23 measures the target length and the display length when any of the lengths of the intervals between the extracted signal displays is shorter than a specified value, or when there is no interval between the extracted signal displays. In these cases, the target display of PH for one target may be separated. Therefore, by performing subsequent processing related to interpolation (measuring the target length and measuring the display length) and also interpolating PH as necessary, it is possible to reduce the user's judgment burden regarding the target.

In addition, when the display length is equal to or greater than the target length, the interpolation unit 23 sets the ping history before interpolation to the ping history after interpolation. When the display length is equal to or greater than the target length, there is no separation portion in the PH target display, so PH interpolation is unnecessary. Therefore, unnecessary interpolation can be prevented, and it is possible to reduce the burden on the user in determining the target object, which may be caused by unnecessary interpolation.

[Hardware configuration example]
An example of the configuration of hardware resources for implementing the display control device (10, 20) in each of the above-described embodiments of the present invention using one information processing device (computer) will be described. The display control device may be physically or functionally implemented using at least two information processing devices. The display control device may also be implemented as a dedicated device. Only some of the functions of the display control device may also be implemented using an information processing device.

FIG. 19 is a diagram illustrating an example of the hardware configuration of an information processing device capable of realizing the display control device of each embodiment of the present invention. The information processing device 90 includes a communication interface 91, an input/output interface 92, a computing device 93, a storage device 94, a non-volatile storage device 95, and a drive device 96.

For example, the A-scope generating unit 11, the PH generating unit 12, the interpolation unit 13, and the display control unit 14 in FIG. 1 can be realized by the calculation device 93.

The communication interface 91 is a communication means for the display control device of each embodiment to communicate with an external device via a wired or/and wireless connection. When the display control device is realized using at least two information processing devices, the devices may be connected so as to be able to communicate with each other via the communication interface 91.

The input/output interface 92 is a man-machine interface including a keyboard as an example of an input device and a display as an output device.

The arithmetic unit 93 is realized by a general-purpose CPU (Central Processing Unit) or a processing device such as a microprocessor, and a plurality of electric circuits. The arithmetic unit 93 is capable of, for example, reading various programs stored in the non-volatile storage device 95 into the storage device 94 and executing processing according to the read programs.

The storage device 94 is a memory device such as a RAM (Random Access Memory) that can be referenced by the computing device 93, and stores programs, various data, etc. The storage device 94 may be a volatile memory device.

The non-volatile storage device 95 is, for example, a non-volatile storage device such as a ROM (Read Only Memory) or a flash memory, and is capable of storing various programs, data, etc.

The drive device 96 is, for example, a device that processes the reading and writing of data from and to the recording medium 97 described below.

The recording medium 97 is any recording medium capable of recording data, such as an optical disk, a magneto-optical disk, or a semiconductor flash memory.

Each embodiment of the present invention may be realized, for example, by configuring a display control device using an information processing device 90 as illustrated in FIG. 19, and supplying to this display control device a program capable of realizing the functions described in each of the above embodiments.

In this case, the embodiment can be realized by having the computing device 93 execute a program supplied to the display control device. It is also possible for some, but not all, of the functions of the display control device to be configured by the information processing device 90.

Furthermore, the above program may be recorded on a recording medium 97, and may be configured to be stored in the non-volatile storage device 95 as appropriate at the shipping stage or operation stage of the display control device. In this case, the method of supplying the above program may be a method of installing the program in the display control device using an appropriate tool at the manufacturing stage before shipping or at the operation stage. The method of supplying the above program may also be a general procedure such as downloading the program from an external source via a communication line such as the Internet.

Some or all of the above embodiments may be described as follows, but are not limited to the following:

(Appendix 1)
an A-scope generating unit that generates A-scope information for displaying an A-scope in a predetermined direction on a display means based on a signal received by the sensor;
a PH generating unit that generates PH information for displaying a B-scope history representing a history of the B-scope in the predetermined direction on the display means based on the received signal;
Measure a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target on the A-scope based on the A-scope information;
Measure a display length, which is a length of a target display in the B-scope history based on the PH information;
an interpolation unit that interpolates the luminance of a separated portion of the target display of the B-scope history when the display length is shorter than the target length;
and a display control unit that causes the display means to display a screen including the B-scope history after interpolation based on PH information about the B-scope history after interpolation.

(Appendix 2)
The display control device according to claim 1, wherein the interpolation unit interpolates the luminance of the separated portion to an arbitrary luminance when there is a gap in the target display on the A-scope.

(Appendix 3)
The display control device according to claim 1 or 2, wherein the interpolation unit, when there is no gap in the target display on the A-scope, interpolates the luminance of the separated portion with the luminance of the B-scope history of an adjacent direction.

(Appendix 4)
The display control device according to any one of Supplementary Note 1 to Supplementary Note 3, wherein the interpolation unit specifies a target display in the A-scope by using the A-scope based on the A-scope information.

(Appendix 5)
The display control device according to any one of Supplementary Note 1 to Supplementary Note 4, wherein the interpolation unit uses the A-scope to extract signal displays whose signal levels are equal to or greater than a threshold from among signal displays which are displays showing the received signal, and if the lengths of the intervals between the extracted signal displays are all equal to or greater than a specified value, the B-scope history before the interpolation becomes the B-scope history after the interpolation.

(Appendix 6)
The display control device described in Appendix 5, wherein the interpolation unit measures the target length and the display length when any of the lengths of the intervals between the extracted signal displays is shorter than a specified value, or when there is no interval between the extracted signal displays.

(Appendix 7)
The display control device according to any one of Supplementary Note 1 to Supplementary Note 6, wherein the interpolation unit sets the B-scope history before interpolation as the B-scope history after interpolation when the display length is equal to or greater than the target length.

(Appendix 8)
generating A-scope information for displaying an A-scope in a predetermined direction on a display means based on a reception signal received by the sensor;
generating PH information for displaying a B-scope history representing a history of the B-scope in the predetermined direction on the display means based on the received signal;
Measure a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target on the A-scope based on the A-scope information;
Measure a display length, which is a length of a target display in the B-scope history based on the PH information;
interpolating the intensity of isolated portions of the target representation of the B-scope history if the representation length is less than the target length;
A display control method for displaying a screen including an interpolated B-scope history on the display means based on PH information about the interpolated B-scope history.

(Appendix 9)
The display control method according to claim 8, further comprising: when there is a gap in the target display on the A-scope, interpolating the brightness of the separated portion to an arbitrary brightness.

(Appendix 10)
The display control method according to claim 8 or 9, wherein when there is no gap in the target display on the A-scope, the brightness of the separated portion is interpolated with the brightness of the B-scope history of an adjacent direction.

(Appendix 11)
The display control method according to any one of claims 8 to 10, further comprising identifying a target display on the A-scope using the A-scope based on the A-scope information.

(Appendix 12)
A display control method according to any one of Supplementary Note 8 to Supplementary Note 11, in which, using the A-scope, signal displays whose signal levels are equal to or above a threshold are extracted from among signal displays which are displays showing the received signal, and if the lengths of the intervals between the extracted signal displays are all equal to or above a specified value, the B-scope history before interpolation is set as the B-scope history after interpolation.

(Appendix 13)
A display control method as described in Appendix 12, wherein if any of the lengths of the intervals between the extracted signal displays is shorter than a specified value, or if there is no interval between the extracted signal displays, the target length and the display length are measured.

(Appendix 14)
The display control method according to any one of Supplementary Note 8 to Supplementary Note 13, wherein, when the display length is equal to or greater than the target length, a B-scope history before interpolation is set as a B-scope history after interpolation.

(Appendix 15)
On the computer,
an A-scope generating function for generating A-scope information for displaying an A-scope in a predetermined direction on a display means based on a signal received by the sensor;
a PH generation function for generating PH information for displaying a B-scope history representing a history of the B-scope in the predetermined direction on the display means based on the received signal;
Measure a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target on the A-scope based on the A-scope information;
Measure a display length, which is a length of a target display in the B-scope history based on the PH information;
an interpolation function for interpolating the brightness of isolated portions of the target display of the B-scope history when the display length is shorter than the target length;
a display control function for displaying a screen including the B-scope history after interpolation on the display means based on PH information about the B-scope history after interpolation; and a display control program for realizing this function.

(Appendix 16)
The display control program according to claim 15, wherein the interpolation function interpolates the luminance of the separated portion at an arbitrary luminance when there is a gap in the target display on the A-scope.

(Appendix 17)
The display control program according to claim 15 or 16, wherein the interpolation function, when there is no gap in the target display on the A-scope, interpolates the brightness of the separated portion with the brightness of the B-scope history of an adjacent direction.

(Appendix 18)
The display control program according to any one of Supplementary Note 15 to Supplementary Note 17, wherein the interpolation function identifies a target display on the A-scope using the A-scope based on the A-scope information.

(Appendix 19)
The display control program according to any one of Supplementary Note 15 to Supplementary Note 18, wherein the interpolation function uses the A-scope to extract signal displays whose signal levels are equal to or above a threshold from among signal displays which are displays showing the received signal, and if the lengths of the intervals between the extracted signal displays are all equal to or above a specified value, the B-scope history before the interpolation becomes the B-scope history after the interpolation.

(Appendix 20)
The display control program described in Appendix 19, wherein the interpolation function measures the target length and the display length when any of the lengths of the intervals between the extracted signal displays is shorter than a specified value, or when there is no interval between the extracted signal displays.

(Appendix 21)
The display control program according to any one of Supplementary Note 15 to Supplementary Note 20, wherein the interpolation function sets the B-scope history before interpolation to the B-scope history after interpolation when the display length is equal to or greater than the target length.

The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various modifications that can be understood by a person skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

REFERENCE SIGNS LIST 10, 20 Display control device 11, 21 A-scope generating unit 12, 22 PH generating unit 13, 23 Interpolating unit 14, 24 Display control unit 50 Sensor 60 Display means 90 Information processing device 91 Communication interface 92 Input/output interface 93 Arithmetic unit 94 Storage device 95 Non-volatile storage device 96 Drive device 97 Recording medium

Claims (10)

an A-scope generating unit that generates A-scope information for displaying an A-scope in a predetermined direction on a display means based on a signal received by the sensor;
a PH generating unit that generates PH information for displaying a B-scope history representing a history of the B-scope in the predetermined direction on the display means based on the received signal;
Measure a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target on the A-scope based on the A-scope information;
Measure a display length, which is a length of a target display in the B-scope history based on the PH information;
an interpolation unit that interpolates the luminance of a separated portion of the target display of the B-scope history when the display length is shorter than the target length;
and a display control unit that causes the display means to display a screen including the B-scope history after interpolation based on PH information about the B-scope history after interpolation. The display control device according to claim 1 , wherein the interpolation unit interpolates the luminance of the separated portion to an arbitrary luminance when there is a gap in the target display on the A-scope. The display control device according to claim 1 or 2, wherein the interpolation unit, when there is no gap between the targets displayed on the A-scope, interpolates the luminance of the separated portion with the luminance of the B-scope history in an adjacent direction. The display control device according to claim 1 , wherein the interpolation unit specifies a target display in the A-scope by using the A-scope based on the A-scope information. 5. The display control device according to claim 1, wherein the interpolation unit uses the A-scope to extract signal displays whose signal levels are equal to or greater than a threshold from among the signal displays which are displays showing the received signal, and when the lengths of the intervals between the extracted signal displays are all equal to or greater than a specified value, the B-scope history before the interpolation is set as the B-scope history after the interpolation. The display control device according to claim 5 , wherein the interpolation unit measures the target length and the display length when any of the lengths of the intervals between the extracted signal displays is shorter than a specified value, or when there is no interval between the extracted signal displays. The display control device according to claim 1 , wherein the interpolation unit sets the B-scope history before interpolation as the B-scope history after interpolation when the display length is equal to or greater than the target length. generating A-scope information for displaying an A-scope in a predetermined direction on a display means based on a signal received by the sensor;
generating PH information for displaying the B-scope history in the predetermined direction on the display means based on the received signal;
Measure a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target on the A-scope based on the A-scope information;
Measure a display length, which is a length of a target display in the B-scope history based on the PH information;
interpolating the intensity of isolated portions of the target representation of the B-scope history if the representation length is less than the target length;
A display control method for displaying a screen including an interpolated B-scope history on the display means based on PH information about the interpolated B-scope history. The display control method according to claim 8 , further comprising the step of: interpolating the luminance of the separated portion to an arbitrary luminance when there is a gap in the target display on the A-scope. On the computer,
an A-scope generating function for generating A-scope information for displaying an A-scope in a predetermined direction on a display means based on a signal received by the sensor;
a PH generation function for generating PH information for displaying the B-scope history in the predetermined direction on the display means based on the received signal;
Measure a target length, which is the length of the target, based on a target display, which is a display showing the received signal related to the target on the A-scope based on the A-scope information;
Measure a display length, which is a length of a target display in the B-scope history based on the PH information;
an interpolation function for interpolating the brightness of isolated portions of the target display of the B-scope history when the display length is shorter than the target length;
a display control function for displaying a screen including the B-scope history after interpolation on the display means based on PH information about the B-scope history after interpolation; and a display control program for realizing this function.