JPH0547790B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention provides for displaying at least two types of data on different parts of the display surface of a display device,
Alternatively, the present invention relates to a display device that displays at least two types of data on the entire display surface of a display device at different times and associates these two types of data with each other. These two types of data are sequentially written and temporarily stored in different memory devices. One type of data among these two types of data is selectively displayed on the entire display surface of the display when only that data is read from the corresponding memory and supplied to the display. When two types of data are simultaneously read from two storage devices and supplied to the display, these two types of data are divided into two corresponding parts obtained by dividing the entire display surface of the display into two. are displayed respectively. These two representations are associated with each other by a distinguishable mark provided on one or two representations.

Hereinafter, the case where the present invention is implemented in a wake and underwater situation display device will be explained.

(b) Prior Art One of the known track and underwater situation display devices is described in Japanese Patent Application Laid-Open No. 142484/1984. This conventional device selectively displays either the own ship's track or the underwater situation under the track at once on the entire display surface of the display. One drawback of this prior art device is that it is not possible to correlate a past point on the displayed track with other displayed underwater conditions below that point.

Another conventional device is described in Japanese Patent Application Laid-Open No. 61-265590. This conventional device displays the own ship's track on the upper part of the display screen of the display device, and displays the underwater situation under the track on the lower part of the display screen. One drawback of this prior art device is that it is not possible to correlate a past point on the track with the underwater situation below that point.

(c) Problems to be Solved by the Invention One object of the present invention is to sequentially write data into different memory devices and temporarily store the data, display the data on different parts of the display surface of the display device, or display the entire display on the display device. An object of the present invention is to provide a display device that correlates at least two types of data displayed on a screen at different times with each other.

Another object of the present invention is to display a wake and the underwater situation under the wake in two corresponding parts obtained by dividing the entire display surface of the display into two parts, and to display one point on the wake and the underwater situation below that point. An object of the present invention is to provide a track and underwater situation display device that correlates underwater situations.

Another object of the invention is to selectively display the wake or the underwater situation below the wake on the entire display surface of the display at different times, and to An object of the present invention is to provide a track and underwater situation display device that correlates situations.

Another object of the present invention is to selectively display a wake or an underwater situation under the wake on the entire display surface of a display device at different times, and to associate a part of the wake and the underwater situation under the wake with each other. It is to provide a status display device.

Another object of the present invention is to obtain two correspondences between the own ship's track, the latitude and longitude line markers around the own ship's position, and the underwater situation under the track, which can be obtained by dividing the entire display surface of the display into two. To provide a track and underwater situation display device that displays each point on the track and associates a point on the track with the underwater situation below that point.

Another object of the present invention is to display the own ship's track, latitude and longitude line markers around the own ship's position, or the underwater situation under the track at different times on the entire display surface of the display, and to It is an object of the present invention to provide a track and underwater situation display device that correlates several points and the underwater situation below those points.

Another object of the present invention is to provide a wake and underwater situation display device that associates a wake and an underwater situation under the wake with display marks that are movable on respective display surfaces.

Another object of the present invention is to display a wake and the underwater situation below the wake by displaying different parts of the wake in different colors and giving the same color to the corresponding parts in other displays where the underwater situation is displayed. Providing a track and underwater situation display device associated with each other The display device according to the invention also comprises (i) a first memory storing a first data signal written sequentially; and (ii) a second data signal written sequentially. (iii) a display for selectively displaying the first data signal and the second data signal at different times on its entire display surface; (iv) a second storage for storing data signals; (v) means for correlating the two obtained displays with each other.

(e) Embodiment In FIG. 1, the display surface 1 of the display 9 of the track and underwater situation display device has two parts 1a and 1b.
It is divided into two parts. On the upper portion 1a of the display surface 1, the track of the own ship indicated by "A" is displayed by sequentially plotting the position of the moving ship based on the output signal of a navigation device, such as a Loran C receiver. “P” indicates the current position of the own ship. A longitude line marker 2 and a latitude line marker 3 are also displayed on the display surface. A rectangular correlation mark "C1" is displayed on the track "A" and is controlled to move on this track. The lower part 1b of the display screen shows a wake “A”.
The underwater situation below is displayed. "B" indicates the submarine line, and "S" indicates the water surface. "C2" indicates another correlation mark. The underwater situation under correlation mark "C1" is displayed as marked by a vertical dashed line drawn through correlation mark "C2".
When correlation mark "C1" is moved on the wake, correlation mark "C2" moves horizontally. Conversely, when mark "C2" is moved in the horizontal direction, mark "C1" moves on the wake.

In FIG. 2, the navigation device 5 is composed of, for example, a Loran C receiver, measures the own ship's position, generates a signal indicating the ship's position, and sends this signal to the conversion circuit 6. The conversion circuit 6 responds to the ship position signal transmitted from the navigation device 5 and generates a numerical signal indicating the latitude and longitude of the ship position. These numerical signals are transmitted to a line marker signal generator 7 and a ship position memory 8.
sent to. The line marker signal generator 7 sets the first latitude and longitude of the latitude and longitude indicating the ship's position as a reference point, for example, the center of the display surface of the display device 9, and In association with,
Signals corresponding to the latitude and longitude line markers displayed on the upper part 1a of the cathode ray tube display 9 are generated. A ship position memory 8 controlled by a storage controller 10 sends latitude and longitude numerical signals to a ship position signal generator 11, and sequentially stores these signals therein. The ship position signal generator 11 is
In response to latitude and longitude numerical signals representing the ship's position, signals corresponding to the ship's position and track displayed on the display surface of the display device 9 are generated. The line marker signal generator 7 and the ship position signal generator 11 are disclosed in US Pat.
It is constructed and operates as described in Re.32357.
The write control circuit 12 has an X-axis counter and a Y-axis counter.
Consisting of an axis counter, signal generators 7 and 11
line marker signal generator 7 , ship position signal generator 11 and display memory 13 so that signals corresponding to the track and latitude and longitude line markers supplied from the display memory 13 are written into predetermined storage elements of display memory 13
control. The readout control circuit 14 includes an X-axis counter and a Y-axis counter, and controls the display storage 13 so that the latitude and longitude line markers are displayed on the upper part 1a of the display surface of the display 9 as shown in FIG. and controls the display 9. Display memory 13
is composed of a storage element array having "P" rows and "Q" columns of storage elements. The upper part 1a of the display 9 is composed of a pixel array having pixels arranged in "P" rows and "Q" columns. A signal stored in one memory element of the display memory 13 is displayed on the corresponding screen of the display 9.

The transmitter 19 sends a pulse signal having a carrier frequency of, for example, 50 kHz to the transducer 21 at a predetermined period based on the clock pulse supplied from the clock pulse generator 20. Transmitter 19
consists of a modulator that generates a pulse signal by amplitude modulating a carrier signal with a pulse lasting approximately 1 [ms]. The transducer 21 is composed of an ultrasonic transducer,
Emit an ultrasonic detection pulse signal into the water. The transducer 21 also receives echo signals reflected from the ocean floor, schools of fish, or other objects and passes these echo signals through an amplifier 23 to an analog-to-digital converter (hereinafter referred to as "A-D converter") 24. Send.
The A-D converter 24 converts the analog input signal into a digital signal and supplies the resulting converted signal to the input terminal of the buffer memory 18 . The buffer memory 18 is composed of a random access memory (hereinafter referred to as "RAM") having N storage elements,
Under the control of the storage controller 17, digital signals are sequentially stored therein. The storage controller 17
It is composed of an axis counter and a Y-axis counter, and is supplied with clock pulses from a clock pulse generator 20, and is supplied with a pulse signal from the transmitter 19 when the transmitter 19 emits a detection pulse into the water. The storage controller 17 starts a counting operation, supplies the count values generated by its X-axis and Y-axis counters to the buffer memory 18, and specifies the storage element of the memory 18 into which the digital signal is written. The X-axis counter of the storage controller 17 continuously generates, for example, a count value of "1", and its Y-axis counter is reset when a pulse is supplied from the transmitter 19, and thereafter the count value is sequentially increased to "N". increase to The obtained count values are supplied to corresponding input terminals of the memory 18, respectively. The display memory 25 is constituted by a memory array having M rows and N columns of memory elements. The display storage device 25 and the buffer memory 18 are connected to the storage controller 2.
6 and stored in the memory 18 are sequentially read out and written into N storage elements in the m-th column of the display storage 25. When the second detection pulse is emitted into the water by the transducer 21, the obtained reflected signal is temporarily stored in the buffer memory 18, and then (m+1) of the display memory 25.
The data is sequentially written to the N storage elements in the column. Similarly, when the jth detection pulse is fired into the water,
The obtained reflected signals are sequentially written into N memory elements in the (m+j)th column of the display memory 25 via the buffer memory 18. After the reflected signals caused by each of the M detection pulses are stored in M columns of the display memory 25, the reflected signals caused by the next detection pulse are stored as the reflected signals caused by the oldest detection pulse. For example, the data is written to N memory elements in the m-th column. Thereby, the oldest reflected signal is replaced with the newest reflected signal.
The reflected signal due to the next detection pulse is (m
+1)th column is written to the storage element. Similarly,
The reflected signals due to each of the subsequently emitted detection pulses are (m+2, m+3, m+4,...M,
1, 2, 3...) are written to each memory element in the column in this order.

The clock pulse generator 20 generates clock pulses at a certain period and supplies them to the input terminal of the transmitter 19, one input terminal of the storage controller 17, the input terminal of the storage controller 26, and the input terminal of the frequency divider 31. The storage controller 26 is composed of an X-axis counter 27 and a Y-axis counter 28. The Y-axis counter 28 repeatedly counts the input cross pulses from the clock pulse generator 20, increases the number sequentially from zero to N, and stores the obtained count value in the buffer memory 18.
and a clock input terminal of the display memory 25, which generates a pulse signal every time the count value of the Y-axis counter 28 reaches N, and supplies it to the clock input terminal of the X-axis counter 27, and a reversible counter 38 that can be preset.
Supplied to the clock input terminal of X-axis counter 2
7 repeatedly counts the pulse signal supplied from the Y-axis counter 28, generates a count value that increases sequentially from zero to M, and supplies it to the other input terminal of the display memory 25.

The readout control circuit 14 controls the display memory 25 and the display 9 so that the underwater situation is displayed on the lower part 1b of the display surface of the display 9 as shown in FIG. The readout control circuit 14 is connected to the display memory 2
5 is supplied with an address signal for specifying the storage element. Along with this, the signals stored in these storage elements are read out and supplied to the display 9. The lower part 1b of the display surface of the display device 9 is composed of a pixel array having M rows and N columns of pixels. A signal stored in one storage element of display storage 25 is displayed on a corresponding pixel of display 9. The reflected signals resulting from the most recent detection signal and captured and stored in a row of memory elements in the display memory 25 are displayed on the display 9.
displayed on the rightmost display line. The oldest reflected signal stored in the display memory is displayed on the display line at the left end of the display surface of the display.

The frequency divider 31 divides the frequency of the input clock pulse train signal and supplies the obtained low frequency clock pulse to the input terminal of the storage controller 10 and the clock input terminal of the reversible counter 37 which can be preset via the gate 41. . The storage controller 10 consists of write and read counters. The counts generated by these counters represent the addresses of the storage elements of the ship position memory 8. A signal representing the position of the ship supplied from the conversion circuit 6 is written into a memory element designated by a write address signal or a read address signal supplied from the memory controller 10,
It is also read out from there. Note that the storage controller 10
The write and read counters of typically generate the same count value.

In order to display and move the correlation marks C1 and C2, mark position fixing circuits 33 and 35, correlation mark signal generators 34 and 36, presettable reversible counters 37 and 38 and a correlation mark controller 39 are further used. Mark position fixing circuit 3
3 is composed of a comparator, and a ship position signal generator 11
and generates an output signal based on the output signal of the read control circuit 14. Correlation mark signal generator 34
generates a signal representing a correlation mark in response to the signal from the circuit 33, supplies this to the display 9, and displays it on its display surface as a correlation mark C1. The mark position fixing circuit 35 is composed of a comparator and generates an output signal based on the output signals from the reversible counter 38 which can be preset and the read control circuit 14. The correlation mark signal generator 36 is
In response to the signals from the circuit 35, it generates signals representative of the correlation marks and supplies these signals to the display 9, which displays the lower part 1 of its display surface as shown in FIG.
b as a correlation mark C2. The correlation mark controller 39 is composed of a right key and a left key. When this right key is pressed down, the correlation marks C1 and C2 move to the right. On the other hand, when the left key is pressed down, these correlation marks move to the left. Presettable reversible counter 37
is controlled by the correlation mark controller 39 and is supplied with and written to the count value generated by the read counter in the storage controller 10 and the frequency divider 3
1 through gate 41 to its clock input terminal, thereby producing a varying count value for addressing the storage element. These count values are supplied to the ship position memory 8 through the memory controller 10. A presettable reversible counter 38 is controlled by a correlated mark controller 39 and is fed and written with the counts generated by the X-axis counter 27 and is connected to the mark position fixing circuit 3.
The addition or subtraction count is performed in response to a pulse signal provided by the Y-axis counter 28 to generate the count value sent to the input terminal of the Y-axis counter 28.

To display and move the correlation marks C1 and C2, press either the right key or the left key. Accordingly, one input terminal of the mark position fixing circuit 33 is connected to one output terminal of the ship position signal generator 11 by a switch 40, and a count value generated by a counter in the memory controller 10 is sent to a presettable reversible counter 37. is written, and the count value generated by the X-axis counter 27 is written into the reversible counter 38 which can be preset. Furthermore, pulse signals from the frequency divider 31 and the X-axis counter 28 are supplied to the counters 37 and 38, respectively. If the left key in the correlation mark controller 39 is pressed down continuously, the reversible counter 3
The count value corresponding to the current position input to 7 is sequentially subtracted in response to the pulse signal from the frequency divider 31, and as a result, the past ship position is sequentially decreased from the newest position to the oldest position. The signal is read out from the position memory 8 and supplied to the ship position signal generator 11.
A signal corresponding to the ship position forming the track displayed on the display 9 is generated by the generator 11 and supplied to the mark position fixing circuit 33. A signal determining the position of the correlation mark C1 on the display surface of the display 9 is generated by a circuit 33 and sent to a correlation mark signal generator 34. A signal for displaying the correlation mark C1 is generated by the generator 34 in response to the signal from the circuit 33 and is supplied to the display 9, so that the mark is displayed at the tip of the wake. When the next pair of signals are read out from the ship position memory 8, the mark C1 disappears from the tip of the wake;
displayed at other points near it on the wake. In this way, by pressing down the left key within the correlation mark 39, the user moves on the drawn track. The count value generated by the X-axis counter 27 and corresponding to the current position is also generated by a reversible counter 39 that can be preset when the left key in the correlation mark controller 39 is pressed down.
is set (loaded) and sequentially subtracted and counted in response to the output signal from the Y-axis counter 28. A signal determining the position of the correlation mark C2 is generated by mark position fixing 35. The signal for displaying the correlation mark C2 is generated by the correlation mark signal generator 36 in response to the output signal from the circuit 35 and is displayed on the display 9, thereby causing the lower part of the display surface of the display 9 to be displayed. A correlation mark C2 is displayed at the right end. When the count value of the counter 38 is decremented by one, the mark C2 moves in the horizontal direction by one pixel. By continuing to press the left key, the mark C2 is further moved in the horizontal direction in synchronization with the movement of the correlation mark C1.

When the movement of correlation mark C1 is stopped, correlation mark C1 remains at the same point on the track, but mark C
2 moves along with the underwater situation display which moves to the left every time a detection pulse signal is emitted from the transducer 21. That is, even while the correlation mark C1 remains at the same point on the track, the transducer/receiver 21 continues to sequentially emit detection pulse signals. Along with this, new echo signals resulting from those detection signals are sequentially received, and the underwater situation display moves to the left. Therefore, the underwater situation display below the correlation mark C1 represented by the mark C2 and the mark C
2 will also be moved. This operation will be explained below.

After the left key of the correlation mark controller 39 returns to its original position, the pulse signal from the Y-axis counter 28 continues to be applied to the clock input terminal of the reversible presettable counter 38. On the other hand, the clock pulses from frequency divider 31 are stopped from being supplied to the clock input terminal of reversible presettable counter 37 by gate 41 controlled by correlation mark controller 39. As a result, correlation mark C2
moves horizontally to the left, but the correlation mark C1
remains at the same point on the track. When the right key in the correlation mark controller 39 is pressed down, the reversible counters 37 and 38 sequentially increase their counts, thereby moving the correlation marks C1 and C2 to the right. After the right key returns to its original position, the reversible counter 38 is controlled to subtract its count value in response to the pulse signal from the Y-axis counter 28, while the clock pulse from the frequency divider 31 , the supply to the reversible counter 37 is stopped. As a result, the correlation mark C2 moves to the left at the same speed in synchronization with the movement of the underwater situation display. On the other hand, the correlation mark C1 remains at the same point on the track.

Note that even while the correlation mark C1 or mark C2 is moving, the signal representing the position of the ship supplied from the conversion circuit 6 is written into the ship position memory 8.

A new track can be displayed, for example, by displaying the ship's current position on the display 9.
When the end of the screen is reached, it is drawn on the display 9 by the reference point adjuster 16. The reference point adjuster 16 is composed of four keys 16a, 16b, 16c and 16d. When the key 16a is pressed, the reference point initially set at the center of the screen moves to the right. On the other hand, the key 16b moves the reference point to the left.
Similarly, keys 16c and 16d move the reference point upward and downward, respectively. It is also possible to automatically adjust the reference point by providing a detection means within the device. The detection means automatically detects that the own ship has reached the edge of the display screen.

In FIGS. 3A and 3B, the display memory 25
Instead, it is also possible to use another display 25a configured with storage elements arranged in (3×M) rows and N columns, for example, to store the reflected signal. Like the storage controller 26, the storage controller 26a also includes an X-axis counter and a Y-axis counter. The Y-axis counter repeatedly counts the input clock pulses from the clock pulse generator 20, and supplies the count value that increases sequentially from zero to N to the clock input terminal of the buffer memory 18 and display memory 25a.
Every time the count value of the axis counter reaches N, a pulse signal is generated and supplied to the clock input terminal of the X-axis counter and the reversible counter 38 which can be preset. X
The axis counter repeatedly counts the pulse signal supplied from the Y-axis counter and sends a count value that increases sequentially from zero to 3M to the input terminal of the display memory 25a and the readout control circuit 14a. The reversible counter 38 reads out the obtained count value and sends it to the control circuit 14.
supply to a. Read control circuit 14a is constructed and operates similarly to read control 14.
The read control circuit 14a controls the display memory 25a.
The display memory 25a is controlled so that the digital signals stored in the storage elements in the M row and N column of the 3M rows are read out and supplied to the display 9. In this configuration, if the left key of the correlation mark controller 39 is kept pressed down, the correlation mark C2 moves to the left, starting from the right edge of P1 on the screen, for example, while the correlation mark C1 moves backward on the track. move towards. When the correlation mark C2 reaches the left end of the screen P1, another old picture P2 corresponding to the memory element in the M row and N column of the display memory 25a is displayed in the lower part 1 of the display 9.
It is displayed over the entire area b. At that time, the correlation mark C2 appears at the right end of the screen. At that time, the correlation mark C2 appears at the right end of the screen. Further, as the left key continues to be pressed down, the correlation mark moves horizontally and to the left until it reaches the left edge of the screen. Thereafter, the read control circuit 14a controls the display 25a so that another older screen P3 corresponding to the other M rows of storage elements is displayed. in this way,
Underwater conditions that are not in the vicinity of the ship's current position and that are not initially displayed on the display surface of the display 9 can be read out, displayed and Associated with any past point on the track.

In the above embodiment, a rectangular correlation mark C2 is used, but for example, a colored vertical line marker may also be used as the correlation mark C2. The mark position specifying circuit 35 and the correlation mark signal generator 36 are configured to generate signals for displaying a vertical line marker that moves in synchronization with the correlation mark C1.

In Figures 4A, 4B, and 4C, the following information is displayed on the entire display surface of the display: the track (Figure 4A), the underwater situation (Figure 4B), and the time-compressed underwater situation (Figure 4C). One of them is selectively displayed.

In Figure 4A, the wake indicated by "A" is
The position of the moving ship is displayed on the entire display surface of the display by sequentially plotting the position of the moving ship based on the output signals of a navigation aid such as a Loran C receiver. "P"
indicates the current position of the ship. EM1, EM2 and
EM3 is an event mark displayed on the track A. Event mark EM1 is a bold “+”
(hereinafter referred to as "event recall mark"). In the lower part of the track display, the latitude and longitude, water depth, water temperature, and time measured at the three points respectively marked with event marks EM1, EM2, and EM3 are displayed in three columns.
In the first column, from left to right, the latitude and longitude, water depth, water temperature, and time measured at the point indicated as EM1 are displayed. In the second column,
The latitude and longitude, water depth, water temperature, and time measured at the point indicated by EM2 are displayed. At the same time, the same type of data obtained at the point indicated by event mark EM3 is displayed in the third column.

The underwater situation beneath the ship is sequentially searched and displayed on the entire display surface of the display as shown in FIG. 4B. "B" indicates the water surface, and "C" indicates the water bottom.
Information signals indicating the underwater situation received based on the detection signals are displayed parallel to each other in the vertical direction. A new underwater situation information signal received based on a newly transmitted detection signal is displayed on the rightmost vertical line. The underwater situation display moves by the width of the vertical line each time a detection signal is emitted into the water. The vertical line at the right end of the underwater situation display corresponds to the current position of the ship. Three "+" marks labeled EM1, EM2, and EM3 are displayed at the bottom of the underwater status display. The three "+" marks EM1 to EM3 in the underwater situation display correspond to EM1 to EM3 in the track display.
Each corresponds to the three marks of EM3. Fourth
Event mark EM1 in the track display in Figure A
The underwater situation below the point marked with is indicated by a "+" mark in the underwater situation display in Figure 4B.
It is displayed as marked by a vertical broken line D passing through EM1. Similarly, the underwater conditions under the points marked by event marks EM2 and EM3 in the track display in Figure 4A are the same as those indicated by the "+" marks EM2 and EM3 in the underwater status display in Figure 4B.
are displayed as marked by a vertical dashed line passing through each of them. These points through which the ship has passed and the underwater situation below these points are therefore each easily related to each other.

In Figure 4C, the underwater situation below wake A is as follows:
It appears compressed on the time axis. E
The water temperature indicated by is displayed together with the water surface B and the sea bottom C. Event marks EM1 to EM3 in the time-compressed underwater situation display are event marks EM1 to EM3 in the track display or underwater situation display.
Compatible with EM3.

A new event mark will be placed on your ship's current position.
It can be easily displayed by operating the event key. Here, it is assumed that the track display shown in FIG. 4A is displayed on the display surface of the display device. A new event mark EM1 is displayed at the tip of the wake indicating the current position of the ship by operating the event key. Until then, EM1
The point that was displayed is EM2. Similarly,
The points that were displayed as EM2 and EM3 become EM3 and EM4, respectively. The new EM1 will be the event recall mark ERM. At the same time, in the underwater situation display and time-compressed underwater situation display, a new event mark EM1 is set at a point corresponding to the current position of the own ship, and the points indicated as EM1 to EM3 become EM2 to EM4, respectively. The signals for displaying ERM and EM2 to EM4 are written to the track display memory, the underwater situation display memory and the time compressed underwater situation display memory. As a result, when the underwater situation display is displayed on the display screen of the display device, a thick "+" mark is displayed on the vertical line at the right end of the display screen. As shown in Figure 4C, when the time-compressed underwater situation display is selected, a thick "+" mark is displayed on the vertical line that is not displayed at the right end, and a thin "+" mark is displayed at the predetermined point. will be displayed. Even when underwater situation display or time-compressed underwater situation display is displayed on the display,
A new event mark is set and displayed at the point corresponding to the current position of your ship.

In FIG. 5, the color fish finder is comprised of a transmitter 51, a receiver 52, an ultrasonic transducer 53, and an analog-digital converter (hereinafter referred to as "A-D converter") 54. The navigation aid device 55 is comprised of a Loran C receiver. The output signal of the fish finder is transmitted through the input/output interface 56.
It is supplied to one input terminal of the CPU 58. The output signal of the navigation aid device 55 is supplied to one input terminal of the CPU 58 through an input/output interface 57. Further, input data generated by pressing a key button on the keyboard is supplied to other input terminals of the CPU 58 through an input/output interface 60. A random access memory (hereinafter referred to as "RAM") 58a is provided inside the RAM 58. A read-only memory (hereinafter referred to as "ROM") 61, an external RAM 62, a screen memory 63, and a display controller 64 are connected to the CPU 5.
Connected to 8. The screen memory 63 has four claim memories, namely, an underwater situation display memory 63a, a time compression underwater situation display memory 63
b, fixed display memory 63c and track display memory 6
It is divided into 3d. Each of these memories 63a to 63d is constituted by a memory element array having M rows and N columns of memory elements. The underwater situation display memory 63a stores signals obtained from received reflected signals. The stored signal is read out from the storage device 63a and supplied to the display device 65, where it is displayed as shown in FIG. 4B. The screen of the display device 65 is composed of a pixel array having M rows and N columns of pixels. The time-compressed underwater situation display memory 63b stores a signal that is supplied to the display 65 to obtain a display as shown in FIG. 4C. The track display memory 63d stores a signal to be supplied to the display 65 to obtain a display as shown in FIG. 4A. Fixed display memory 63c
stores the same signal as is stored in one of display stores 63a, 63b and 63d and displayed on display 65. The display controller 64 is
Control is performed such that one of the display memories 63a to 63d is selected, and the signal stored in that memory is read out and supplied.

In FIG. 6, new data supplied from the color fish finder, navigation aid 55, water temperature measuring device, and clock are stored in area M1. These data include ship position, water depth, water temperature, and time measured at the own ship's current position. These data are processed by the CPU 58 and written into the corresponding frame memories 63a to 63d, respectively. The reflected signal generated in response to the detection signal is
It is controlled by the CPU 58 and is temporarily stored in the external RAM 62, and then written to the underwater situation display storage 63a. Every time a plurality of detection pulse signals are emitted into the water, the CPU 58 extracts the reflected signal having the maximum amplitude from among the reflected signals generated in response to the plurality of detection pulse signals, and stores the reflected signal in the time compression underwater situation display memory 63b. will be written to. As a result, a signal is obtained for displaying the underwater situation compressed in time. CPU58 is external
Calculation is performed based on the numerical value representing the reference point on the display screen of the display unit read from the RAM 62 and the numerical value representing the current position longitude and latitude of the own ship, and a signal indicating the current position of the own ship on the display screen of the display unit. get. The obtained signal indicating the ship position is written into the track display memory 63d. Area M2 constitutes a database of event marks and event recall marks. This area forms mark storage means for storing the positions at which mark signals for associating a plurality of displays with each other are displayed.
This area is composed of four databases, ie, databases "0" to "3". Database "0" is an event mark, and stores the latitude and longitude, water depth, water temperature, and time measured at the marked point. database 0
The data stored in is displayed in the lower part of the track display shown in FIG. 4A. Each of databases 1 to 3 has an event recall mark (hereinafter referred to as "ERM").
), and stores 16 display positions where each event mark is displayed. Each of databases 1 to 3 is configured as shown in FIG. The database area is 16
divided into smaller areas. Each small area stores the display position for each event mark. Display positions for event marks are sequentially stored in small areas 1 to 16 in descending order of the time at which the event mark (hereinafter referred to as "EM") was generated and displayed. The display pointer indicates the location of the ERM. For example, if the display pointer points to small area 3,
EM3 becomes ERM.

In the database 0, data of a plurality of data groups are stored, one data group consisting of longitude, latitude, water depth, water temperature, and time data corresponding to each event mark. Data corresponding to the ERM pointed to by the display pointer and the two event marks before this ERM are selected and read out and displayed in three columns in the lower part of the track display shown in FIG. 4A. The ERM is selected with the display pointer, and the ERM and the two EMs before it are
Performs the function of reading data corresponding to.

The event mark generation mode is activated by pressing the event mark key 59a and key 59b of the keyboard 59 shown in FIG. The event recall setting mode is activated by pressing the event mark key 59a and key 59c on the keyboard 59. If the event mark setting mode is set, a new EM will be displayed at own ship's current position in each of all displays and this
EM becomes ERM. The ERM, which was indicated by a thick "+" mark until the event mark setting mode was set, changes to an event mark indicated by a thin "+" mark.

When the event recall setting mode is set, the display pointer shown in FIG. 7 shifts to the previous side (toward the smaller number). As a result, the ERM indicated by the thick "+" mark
is displayed with a thin line "+" mark, and the thin line "+"
The previous event mark, which was displayed as a mark, becomes ERM and is displayed as a thick "+" mark. When the event mark key 59a and key 59c are pressed again, the display pointer shifts one step to the past. In this way, ERM shifts to the previous EM. In the track display shown in Figure 4A, the data measured at three points indicated by event marks and displayed in three rows at the bottom of the display surface of the display unit is as follows each time the ERM is shifted.
Change to other data. The data displayed on the display is stored in area M2 and retrieved from there.

In FIG. 8A, after the event mark setting mode is set, newly obtained data is first imported into database 0 at step n1. The newly obtained data becomes the latest data in database 0. Database 0 is
Data obtained from up to 16 points can be stored. Data obtained from 16 points is database 0
After the data is imported, the oldest data is replaced by new data when it is imported. At step n2, display pointers 0-2 in databases 1-3 are set to the small area with the highest number. For example, if two event mark display positions are stored in databases 1-3, each display pointer is set to a small area with the number 3. That is, the event mark represented by the number 3 becomes ERM. At step n3, the display position where the event mark is displayed is written into the track display database 1. This EM display position is the current position of the ship.
At step n4, this EM is made into ERM.
In this way, the event mark is displayed as a thick "+" mark at the current position of the own ship pointed to by the display pointer. At step n5, all event marks not pointed to by the display pointer are
Become an EM. At step n6, data corresponding to the ERM and the two previous EMs are read from database 0 and displayed on the lower part of the display screen of the display.

Next, in step n7, steps n3 to n5 are performed regarding the underwater situation display. In this way, the display position where EM is displayed is stored in database 2, and the mark pointed to by the display pointer is ERM, which is displayed with a thick "+" mark, and other marks are marked with a thin "+" mark. EM is displayed as a mark. In step 8, similarly, steps n3 to n5 are performed regarding time-compressed underwater situation display.
will be carried out.

In FIG. 8B, the operation of the event recall setting mode is explained. First, step n10
, all ERM display pointers are shifted by one to the side with the smaller number. step n
In step 11, steps n4 and n5 are performed to update the mark display on the screen in the track display.
will be carried out. At step n12, numerical data corresponding to the number pointed to by the display pointer in the database and the two smaller numbers before it are read out and displayed on the lower part of the display surface of the display. Furthermore, similarly, steps n13 and n1
In step 4, steps n4 and n5 are performed to update the mark display for the underwater situation display and the time-compressed underwater situation display as well. This completes the series of operations.

In the embodiments of the present invention shown in FIGS. 4 to 8B, any one of the track display, underwater situation display, and time-compressed underwater situation display may be used as described above.
When EM is set to be displayed, EM is automatically set and displayed at the current position of the ship in the other two displays as well. Furthermore, multiple EM
One of the EMs is changed to ERM, that is, from a thin "+" mark to a thick "+" mark, so that the data corresponding to the ERM and the two EMs before it are used in the track display and the time-compressed underwater situation. displayed during the display so that any of your ship's past positions can be easily compared with the underwater conditions below that past point, and also the own ship's position, water depth, and water depth obtained at the point indicated by ERM and EM. Numerical data representing water temperature and time is displayed during the track display.

In the above embodiment, three EMs are displayed on the display screen, but three or more EMs can also be displayed on all of the track display, underwater situation display, and time-compressed underwater situation display.

In the above embodiment, the EM is input and displayed at the current position of the own ship, but it is also possible to input and display the EM at a past point on the track being displayed and each corresponding point in other displays. You can also do it.

In FIG. 9A, every time the signal converter 71 receives the output signal from the timer 72, it converts the output signal from the ship position signal generator 11 into a 3-bit digital signal, and converts the signal into a 3-bit digital signal into one input of the display memory 13b. Supply to the terminal. The timer 72 repeatedly counts a predetermined number of clock pulses and generates an output signal each time the counted value reaches the predetermined value, and outputs an output signal to the control input terminal of the signal converter 71 and the control input terminal of the signal converter 73. supply to The display memory 13b is composed of three memories, each consisting of a memory element array having P rows and Q columns of memory elements. Each digital output signal is controlled by the write control circuit 12 and written into three storage elements of the display storage 13b. The 3-bit digital signal is read out under the control of the readout control circuit 14 and supplied to the input terminal of the color converter 74. The color converter 74 generates seven types of output signals according to the input digital values, and displays the color display 9a.
3 control input terminals. The mark position designation circuit 75 generates a signal for determining a straight line on the image drawn in the horizontal direction at the lower part of the display surface of the display 9a based on the output signal from the storage controller 26, and outputs a signal to the signal converter. 73 input terminal. The signal converter 73 continuously generates a 3-bit digital signal in response to the output signal from the mark position specifying circuit 75 for a period determined by two adjacent output signals generated by the timer 72. The three-bit digital signal from the signal converter 73 is controlled by the storage controller 26 and written into three storage elements of the display storage 25b. The display memory 25b is composed of three memories, each consisting of a memory element array having M rows and N columns of memory elements. The digital signals once stored in the three storage elements are read out under the control of the readout control circuit 14 and supplied to the input terminal of the color converter 76 . Color converter 76 is constructed similarly to color converter 74. Color converter 7
6 generates signals corresponding to each of the seven colors and supplies them to three control input terminals of the color display 9a. The signals corresponding to each color continue to be supplied for a period determined by the timer 72.

As a result, as shown in FIG. 9B, the wake A and the horizontal straight line H are displayed in seven different colors on the upper and lower halves of the screen of the color display 9a periodically, for example, every 5 minutes. Is displayed. The underwater situation identified by one color on the horizon H corresponds to the part of the track shown in the same color, and therefore this underwater situation is the same as the underwater situation below the part of the track shown in the same color. be. In this way, the own ship's past position and the underwater situation below can be easily related to each other.

Further, the wake portion corresponding to the width of the lower part of the display surface of the display device 9a that displays the underwater situation can be displayed in a different color. This means that the 9th A
In the configuration shown in the figure, the timer 72
is set to generate an output signal, and the signal converter 71
This is achieved by supplying In this case, the signal converter 73, mark position specifying circuit 75 and color converter 76 are removed from the block diagram shown in FIG. 9A, and the output terminal of the display memory 25b is directly connected to the display 9a.

In the embodiment shown in FIG. 10, the reflected signals captured within a certain period of time, for example one hour, are displayed on the lower half of the display surface of the display 9a.
By combining the relevant parts of the block diagram shown in FIG. 10 and the block diagram shown in FIG. It can be displayed in a different color than the . According to this configuration, the distance traveled by the ship within this time can be obtained from the displayed track. In Figure 10, A-D
Converter 24 provides a digital signal obtained in response to the received reflected signal to an input terminal of peak hold circuit 81 . Peak hold circuit 81
consists of two groups, each consisting of a storage element and a comparator. One group stores reflected signals in response to detection pulse signals launched into the water. A comparator in circuit 81 is controlled by controller 83 to compare the reflected signals stored in one group of storage elements with newly obtained reflected signals due to other newly emitted probe signals. and generate a signal representing the amplitude of the larger of the compared signals. The output signals obtained from the comparators are written to other groups of storage elements. This operation is repeated for a period of time determined by timer 82. The output signal of the peak hold circuit 81 is controlled by the storage controller 26 and supplied to the input terminal of the display storage 25b. Timer 82 generates a signal representing the time during which the received reflected signals are compared within peak hold circuit 81 . This time is determined based on the number of display lines on the display 9a and the time required to receive the reflected signal displayed on the entire lower part of the display 9a.

(f) Effects of the Invention As described above, the present invention provides a device that can correlate two types of data displayed on the display screen of a display device at different times or at different locations on the same screen. can be provided.

[Brief explanation of the drawing]

FIG. 1 is an example of a display displayed on the screen of a display device according to an embodiment of the present invention. FIG. 2 is a block diagram of one embodiment of the present invention. Figure 3A shows
This is another embodiment of this invention. Figure 3B shows the third
This is an example of a display displayed on the screen of a display device used in the embodiment shown in FIG. FIG. 4A is an example of a track display obtained by an embodiment of the present invention.
4B is a display example of an underwater situation display obtained by an embodiment of the present invention. FIG. 4C is a display example of an underwater situation display compressed in the time axis direction obtained by an embodiment of the present invention. FIG. 5 is a block diagram of one embodiment of the present invention. FIG. 6 is a diagram showing a partial configuration of an external RAM used in the embodiment shown in FIG. 5. FIG. 7 is a diagram showing the configuration of each database shown in FIG. 6. FIGS. 8A and 8B are flowcharts showing the operation of one embodiment of the present invention. 9th
Figure A is a block diagram of one embodiment of the present invention. FIG. 9B is an example of a display displayed on the display screen used in the embodiment shown in FIG. 9A. FIG. 10 is a block diagram of a portion of another embodiment of the invention.

Claims (1)

[Claims] 1. Ship position measuring means for sequentially measuring the position of the ship; means for sequentially emitting detection signals into the water; means for receiving reflected signals; and storing signals from the ship position measuring means. a first storage means; a second storage means for storing the reflected signal; a readout means for reading signals from the first and second storage means; and the first storage means for forming the own ship's track. The entire display surface of the display is divided into two parts based on the signal from the second storage means representing the underwater situation under the ship's own ship's track. an indicator for respectively displaying a wake and an underwater situation below the wake; means for displaying a first mark movable on the wake; and a suitable portion of the display area of the indicator for displaying the underwater situation; An underwater detection device comprising: means for displaying a second mark on the surface; and means for moving the second mark in a direction perpendicular to a direction representing depth in synchronization with the first mark. 2. The underwater detection device according to item 1, further comprising means for displaying latitude and longitude line markers on the portion of the display surface where the track of the display is displayed. 3. Ship position measuring means for sequentially measuring the position of the ship, means for sequentially emitting detection signals into the water, means for receiving reflected signals, and first storage means for storing the signals from the ship position measuring means. , a second storage means for storing the reflected signal; a readout means for reading out the signal from the first and second storage means; The entire display surface of the display is divided into two parts based on the signal from the second storage means representing the underwater situation under the wake, and the own ship's wake and the signal below this wake are divided into two corresponding parts. means for sequentially displaying the above-mentioned wake in different colors at predetermined intervals; and means for displaying a straight line in a right angle direction at each predetermined time, in a different color sequentially at each predetermined time, and in the same color as the corresponding part of the wake. 4. The underwater detection device according to item 3, further comprising means for displaying latitude and longitude line markers on the portion of the display surface where the track of the display is displayed. 5. Ship position measuring means for sequentially measuring the position of the ship, means for sequentially emitting detection signals into the water, means for receiving reflected signals, and first storage means for storing the signals from the ship position measuring means. , a second storage means for storing the reflected signal; a readout means for reading out the signal from the first and second storage means; The entire display surface of the display is divided into two parts based on the signal from the second storage means representing the underwater situation under the wake, and the own ship's wake and the signal below this wake are divided into two corresponding parts. means for generating a signal representing a time corresponding to the width of the display area in which the underwater situation of the display is displayed; An underwater detection device consisting of means for displaying in a color different from that of other parts. 6 Ship position measuring means for sequentially measuring the position of the ship; means for sequentially emitting detection signals into the water; means for receiving reflected signals; and first storage means for storing signals from the ship position measuring means; , a second storage means for storing a signal based on a reflected signal captured at a predetermined time; a reading means for reading out the signal from the first and second storage means; and a second storage means for forming a wake of the own ship. Two corresponding parts obtained by dividing the entire display surface of the display into two based on the signal from the first storage means and the signal from the second storage means representing the underwater situation under the own navigation track. a display device for displaying the own ship's track and the underwater situation below the track, respectively; means for generating a signal representing a time corresponding to a width of a display area in which the underwater situation of the display device is displayed; means for displaying a portion corresponding to the above-mentioned time in a color different from other portions of the wake. 7 Ship position measuring means for sequentially measuring the position of the ship, means for sequentially emitting detection signals into the water, means for receiving reflected signals, and first storage means for storing the signals from the ship position measuring means. , a second storage means for storing the reflected signal; a readout means for selectively reading a signal from either the first or second storage means; and the first storage for forming the own ship's track. The signal from the means and the signal from the second storage means representing the underwater situation under the own wake are selectively supplied to the display device at different times, and the signals are sent to the display device at different times, so that multiple points on the wake can be detected at one time. A display that displays on the entire display screen and the underwater situation under the track at other times on the entire display screen, and a point corresponding to one point on the own track on the track display or underwater situation display screen. means for inputting a signal representing a mark; a third storage means for storing a signal for displaying the point on the track on a track display surface (or underwater situation display surface) in response to the input signal; a fourth storage means for storing a signal for displaying the point on the track on an underwater situation display surface (or track display surface) in response to an input signal; and a fourth storage means for storing the signal from the third or fourth storage means. and means for displaying a mark on a track display surface or an underwater situation display surface in response to the signal from the third or fourth storage means. 8. Ship position measuring means for sequentially measuring the position of the ship, means for sequentially emitting detection signals into the water, means for receiving reflected signals, and first storage means for storing the signals from the ship position measuring means. , a second storage means for storing the reflected signal; a readout means for selectively reading a signal from either the first or second storage means; and the first storage for forming the own ship's track. The signal from the means and the signal from the second storage means representing the underwater situation under the own wake are selectively supplied to the display device at different times, and the signals are sent to the display device at different times, so that multiple points on the wake can be detected at one time. A display that displays on the entire display screen and the underwater situation below the wake on the entire display screen at other times, and a signal that indicates the time corresponding to the width of the display area in which the underwater situation on the above display is displayed. An underwater detection device comprising: means for generating a wake; and means for displaying a portion of a wake corresponding to the above time in a color different from other portions of the wake.