JPH01237481A - Display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field This invention is a method for displaying at least two types of data on different parts of the display surface of a display device, or displaying at least two types of data at different times. The present invention relates to a display device that displays data on the entire display surface of a device 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 - or by a distinguishable mark provided on the two representations.

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

(b) One of the conventionally known track and underwater situation display devices is JP-A-61
-142484 + Described in the publication. 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 conventional device is that only a single past point on the track is displayed.
It is not possible to correlate the underwater situation below the point that is displayed elsewhere.

Another conventional device is described in Japanese Patent Application Laid-Open No. 81-285590. 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, and display the data on different parts of the display surface of the display, or to display the entire display on the display. 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 the 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 a point on the track and the underwater situation below the point in relation to each other.

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 in which the wake and the underwater situation under the wake can be related to each other by movable display marks on the respective display surfaces.

Another object of the present invention is to display different parts of the wake in different colors, and to give the same color to the corresponding parts in other displays where the underwater situation is displayed. The display device according to the invention also comprises: (i) a first memory storing a first data signal written sequentially; and (ii) a first data signal written sequentially. (iii) a second storage device storing data signals of the second data signal;
a display for selectively displaying the data signal and the second data signal on its entire display surface at different times;
(a) reading means for reading out data signals from the first storage device and the second storage device and supplying these data signals to the display; and (a) means for correlating the two obtained displays with each other. Ru.

(e) In the first embodiment, the display surface l of the display 9 of the wake and underwater situation display device is divided into two parts 1a and lb. In the upper part 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 'CI' is displayed on the track 'A' and is controlled to move along this track '2'.

In the lower part 1b of the display screen, the underwater situation below the wake "A"° is displayed. "B" indicates the seabed line, and "S'' indicates the water surface. “C2′° indicates another correlation mark. The underwater situation under the correlation mark “CI” is the correlation mark “02′”.
It is shown as being marked by a vertical dashed line drawn through it. When the correlation mark "01" is moved on the wake, the correlation mark C2°' moves in the horizontal direction. Conversely, when mark "02'' 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 is
In response to the ship position signal transmitted from the navigation device 5,
Generates a numerical signal indicating the latitude and longitude of the ship's position. These numerical signals are sent to a line marker signal generator 7 and a ship position memory 8. 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 Relatedly, the cathode ray tube display 9
generates signals corresponding to the latitude and longitude line markers displayed in the upper part 1a of the screen. The ship position memory 8 controlled by the storage controller 1O sends latitude and longitude numerical signals to the ship position signal generator 11, and sequentially stores these signals therein. The ship position signal generator 11 generates signals corresponding to the ship position and track displayed on the display surface of the display device 9 in response to latitude and longitude numerical signals representing the ship position. Line marker signal generator 7 and ship position signal generator 11 are constructed and operate as described in U.S. Patent Re, 32,357. The write control circuit 12 is composed of an X-axis counter and a Y-axis counter, and writes signals corresponding to the wake and the latitude and longitude line markers supplied from the signal generators 7 and 11 into predetermined storage elements of the display storage 13. The line marker signal generator 7, ship position signal generator 11, and display memory 13 are controlled so as to 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. The display memory 13 is composed of a memory element array having memory elements arranged in "Po" rows and "Q" columns. The upper part 1a of the display 9 is “
It is composed of a pixel array having pixels in P II rows and II Q 11 columns. The signal stored in the negative storage element of the display storage 13 is displayed on the corresponding screen of the display 9.

The transmitter 18 has a carrier frequency of, for example, 50, based on the clock pulses supplied from the clock pulse generator 20.
A kHz pulse signal is sent to the transducer 21 at a predetermined period. Transmitter 18 transmits the carrier signal at approximately 1 [
It consists of a modulator that generates a pulse signal by amplitude modulating it with a pulse lasting msl. The transducer 21 is composed of an ultrasonic transducer and emits an ultrasonic detection pulse signal into the water.

The transducer 21 also receives echo signals reflected from the seabed, schools of fish, or other objects, and passes these echo signals through an amplifier 23 to an analog-to-digital converter (rA-
24 (referred to as "D converter"). A-D converter 24
converts the analog input signal into a digital signal and supplies the obtained 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 rRAMJ) having N storage elements, and is controlled by the storage controller 17 to sequentially store digital signals therein. The memory controller 17 is composed of an X-axis counter and a Y-axis counter, is supplied with clock pulses from the clock pulse generator 20, and is supplied with a pulse signal from the transmitter 18 when the transmitter 18 emits a detection pulse into the water. be done. The storage controller 17 starts counting operation,
The count values generated by the X-axis and Y-axis counters are supplied to the buffer memory 18 to designate 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 a count value of ``1'', for example, and its Y-axis counter is reset when a pulse is supplied from the transmitter 18, and thereafter the count value is sequentially generated by ``N'' pulses. 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 25 and the buffer memory 18 are controlled by the storage controller 26 and sequentially read out the digital signals stored in the memory 18 and write them 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 phase memory 18, and then the N signal in the (m+1)th column of the display memory 25 is are sequentially written into the storage elements of .

Similarly, when the j-th detection pulse is emitted into the water, the obtained reflected signals are sequentially written into the N storage elements in the (m+j)th column of the display memory 25 via the 7<rahua 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 resulting from the next detection pulse is written to the (m+1)th column memory element. Similarly, the reflected signal due to each subsequently emitted probe pulse is (m+2.+
n+3. m+4. ...M, 1, 2.3...) columns are written in each memory element in this order.

The clock pulse generator 20 generates clock pulses at a certain period, and connects 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 frequency divider 31.
Supplied to the input terminal of 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, sequentially increases the number from zero to N, and sends the obtained count value to the clock input terminal of the buffer memory 18 and the display memory 25. A pulse signal is generated every time the count value of the Y-axis counter 28 reaches N and is supplied to the clock input terminal of the X-axis counter 27 and the clock input terminal of a reversible counter 38 that can be preset. X
The axis counter 27 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 is connected to the display 9 as shown in FIG.
so that the underwater situation is displayed on the lower part 1b of the display screen.
Controls display storage 25 and display 9. The read control circuit X4 supplies the display memory 25 with an address signal for specifying the storage element. Along with this, the signals stored in these storage elements are read out and displayed on the display 9.
supplied to

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. The signal stored in the - storage element of the display storage 25 is displayed on the corresponding pixel of the display 9. The reflected signals resulting from the most recent detection signal and captured and stored in a row of storage elements of the display memory 25 are displayed on the display line at the right end of the display 9. 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 pulses to the input terminal of the storage controller 10 and the clock input terminal of the presettable reversible clock register 37 . The storage controller 10 is composed of a counter. The count generated by this counter represents the address of the storage element.

A signal representing the ship's position is written into this memory element,
It is also read from there.

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 38, presettable reversible counters 37 and 38 and a correlation mark controller 39 are further used. The mark position fixing circuit 33 is composed of a comparator, and generates an output signal based on the output signals of the ship position signal generator 11 and the readout 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 presettable reversible counter 38 and the read control circuit 14. Correlation mark signal generator 36
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 correlation marks C2 in the lower part 1b of its display surface as shown in FIG. Display as . 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. A presettable reversible counter 37 is controlled by a correlation mark controller 39 and a memory 10
the frequency divider 31 also performs subtractive counting or additive counting in response to a pulse signal provided to its clock input terminal;
This generates a changing count value for addressing the storage element. These count values are stored in the storage controller 1.
0 to the ship position memory 8. A presettable reversible counter 38 is controlled by a correlated mark controller 39 and is supplied with and written with the count value generated by the X-axis counter 27 and generates a count value that is sent to the input terminal of the mark position fixing circuit 35. In order to do this, addition or subtraction is performed in response to a pulse signal supplied from 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 memory controller 1 is connected to a presettable reversible counter 37.
The count value generated by the counter in 0 is written,
The count value generated by the X-axis counter 27 is written into the presettable reversible counter 38 . Furthermore, pulse signals from the frequency divider 31 and the X-axis counter 28 are supplied to the counters 37 and 38, respectively. When the left key in the correlation mark controller 39 is continuously pressed down, the count value corresponding to the current position input to the reversible counter 37 is sequentially subtracted in response to the pulse signal from the frequency divider 31. As a result, past ship positions are sequentially read from the ship position memory 8 from the newest position to the oldest position 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. Ship position memory device 8
When the next pair of signals are read out from , Manitz C1 disappears from the tip of the track and appears at another point near it on the track. 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 set (loaded) to a reversible counter 38 that can be preset when the left key in the correlation mark controller 39 is pressed down.
and is 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. A signal for displaying the correlation mark C2 is generated by the correlation mark signal generator 3.
6 in response to an output signal from circuit 35;
The correlation mark C2 is displayed on the display 9, thereby displaying the correlation mark C2 at the lower right end of the display surface of the display 9. counter 38
When the count value is subtracted by one, the mark C2 moves by one pixel in the horizontal direction. 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.

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 supplied to the clock input terminal of the presettable reversible counter 38. On the other hand, the clock pulse from the frequency divider 31 is
A gate 41 controlled by the correlation mark controller 3B stops supplying the clock input terminal of the presettable reversible counter 37. As a result, the 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 38 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 is stopped from being supplied to the reversible counter 37. 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.

A new track is drawn on the display 9 by the reference point adjuster 16, for example, when the current position of the ship reaches the edge of the screen of the display 9. The reference point adjuster 16 has four keys] [fa, 18
It consists of B, IBc and LED. When the key lea is pressed, the reference point initially set at the center of the screen moves to the right. On the other hand, key IBb moves the reference point to the left. Similarly, key 16C and led 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 FIG. 3(A) and FIG. 3(B), the display memory 25
Instead of storing the reflected signal, for example, (3
XM) Another display 25a composed of memory elements in rows and N columns
It is also possible to use Similarly to the storage controller 26, the storage controller 28a also includes an X-axis counter and a Y-axis counter. The Y-axis counter uses a clock pulse generator 20
The input clock pulses from the Y-axis counter are repeatedly counted, and the count value increasing up to N is supplied to the clock input terminal of the buffer memory 18 and the display memory 25a, and each time the count value of the Y-axis counter reaches N, a pulse is Generates a signal
The clock input terminal of the axis counter and the presettable reversible counter 38 is supplied. The X-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 14a.
supply to. Read control circuit 14a is constructed and operates similarly to read control 14. The readout control circuit 14a controls the display storage 25a so that the digital signals stored in the storage elements in the M row and N column of the 3M rows of the display storage 25a are read out and supplied to the display 9. .

In this configuration, if the left key of the correlation mark controller 38 is held down, the correlation mark C2 moves to the left, starting from the right edge of the PI on the screen, for example, while the correlation mark CI moves backward on the track. move towards. When the correlation mark C2 reaches the left end of the screen P1, the display memory 25a
Another old picture P2 corresponding to the memory element in M rows and N columns is displayed over the entire lower part 1b of the display 9. 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 storage 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 by continuously and appropriately depressing the key of the correlation mark controller 38. , 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.

Mark position designation circuit 35 and correlated mark signal generator 36
is adapted to generate a signal for displaying a vertical line marker that moves in synchronization with the correlation mark CI.

In Figures 4(A), 4(B), and 4(C), the entire display surface of the display shows the wake (Figure 4(A)), underwater situation (Figure 4(B)) ) and time-compressed underwater situations (
4(C)) is selectively displayed.

In Figure 4(A), the track indicated by rAJ is displayed on the entire display surface of the display by sequentially plotting the position of the moving ship based on the output signal of a navigation aid device such as a Loran C receiver. be done.

"P" indicates the current position of the ship. EMI, EM2, and EM3 are event marks displayed on the track A. The event mark EMI is displayed as a bold "+" mark (hereinafter referred to as "event recall mark").

The event marker ') EMI is displayed in the lower part of the track display.
, EM2 and EM3-c
The latitude and longitude, water depth, water temperature, and time measured at the two points are displayed on the ball. In the first column, from left to right, the latitude and longitude, water depth, water temperature, and time measured at the point indicated as EMI are displayed. The second column displays the latitude and longitude, water depth, water temperature, and time measured at the point indicated by EM2. Similar data obtained at the point indicated by event mark EM3 is displayed in the third column.

The underwater situation under the ship is sequentially searched and displayed on the entire display surface of the display as shown in FIG. 4(B). "B" indicates the water surface, and rcJ 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.

At the bottom of the underwater status display, EMI, EM2 and EM are displayed.
Three "10" marks indicated as 3 are displayed. The three "+" marks EMI to EM3 in the underwater situation display correspond to the three marks EMI to EM3 in the track display, respectively. The underwater situation below the point marked by the event mark EMI in the track display in Figure 4(A) is a vertical dashed line passing through the EMI indicated by the "10" mark in the underwater status display in Figure 4(B). It is displayed as if it were marked with . Similarly, the underwater situation below the points marked by event marks EM2 and EM3 in the track display in Figure 4(A) is indicated by a "+" mark in the underwater situation display in Figure 4(B). EM2 and EM3 are displayed as marked by a vertical broken 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 FIG. 4(C), the underwater situation below the wake A is displayed as being compressed on the time axis. The water temperature indicated by E is displayed together with the water surface B and the sea bottom C. Event marks EMI to EM in time-compressed underwater situation display
3 corresponds to event marks EMI to EM3 in the track display or underwater situation display.

A new event mark is easily displayed at the current position of the ship by operating the event key. Here, it is assumed that the track display shown in FIG. 4(A) is displayed on the display surface of the display device. New event mark E
The MI is displayed at the tip of the track indicating the current position of the ship by operating the event key. The point that was displayed as EMI until then becomes EM2. Similarly, the points labeled EM2 and EM3 are E
They become M3 and EM4. The new EMI 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 EMI is set at the point corresponding to the current position of your ship, and the EMI
The points indicated as I to EM3 become EM2 and 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 4(C), 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 on the vertical line that is not displayed at the right end.
” mark is displayed at a predetermined point. Also when an underwater situation display or a time-compressed underwater situation display is displayed on the display, a new event mark is set and displayed at a point corresponding to the current position of the own ship.

In FIG. 5, the color fish finder is comprised of a transmitter 51, a receiver 52, an ultrasonic transducer 53, and an analog-to-digital converter (hereinafter referred to as rA, -D converter) 54. The navigation aid device 55 is comprised of a Loran C receiver. The output signal of the fish finder is input to the input/output interface 5.
6 to one input terminal of the CPO 58. The output signal of the navigation aid device 55 is transmitted to the input/output interface 5
7 and is supplied to one input terminal of the CPU 58. Furthermore, the input data generated by pressing the key buttons on the keyboard is transmitted to the CPO through the input/output interface 60.
58 other input terminals. A random access memory (hereinafter referred to as rRAMJ) 58a is provided inside the RAM 58. Read-only memory (FRO)
MJ) 61, an external RAM 82, a screen memory 63, and a display controller 64 are connected to the CPU 58. The screen memory 83 is divided into four claim memories: an underwater situation display memory 63a, a time-compressed underwater situation display memory 63b, a fixed display memory 63c, and a track display memory B3d. These memory devices f
Each of 13a to 83d is constituted by a memory element array having M rows and N columns of memory elements. Underwater situation display memory f
lf3a stores a signal obtained from a received reflected signal. The stored signal is read out from the storage E13a and displayed on the display 6.
5 and displayed as shown in FIG. 4(B). The screen of the display device 65 is composed of a pixel array having M rows and N columns of pixels. Time compression underwater situation display memory B3
b stores a signal to be supplied to the display 85 to obtain a display as shown in FIG. 4(C). Track display memory 83
d stores a signal to be supplied to the display 65 to obtain a display as shown in FIG. 4(A). Fixed display memory 83
c stores the same signal that is stored in one of the display stores 83a, 83b and 63d and displayed on the display 65. The display controller 64 has a display memory θ
Control is performed such that one of the memory devices 3a to 63d is selected, and a signal stored in the memory device 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 the old area. 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 to each of the corresponding frame memories 83a to e3d. The reflected signal generated in response to the detection signal is CPo
58, it is temporarily stored in the external RAMB2, and then written in the underwater situation display storage 83a.

Every time a plurality of detection pulse signals are emitted into the water, the reflected signal having the maximum amplitude is extracted from among the reflected signals generated in response to the plurality of detection pulse signals by the CP05B, and is stored in the time compression underwater situation display memory Ei3b. will be written to. As a result, a signal is obtained for displaying the underwater situation compressed in time. CPO58 is external RAM
The current position of the own ship is indicated on the display screen of the display by performing calculations based on the numerical value representing the reference point of ``2'' read out from the display surface of the display device and the numerical values representing the longitude and latitude of the current position of the own ship. Get a signal. The obtained signal indicating the ship position is written into the track display memory B3d. 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 consists of four databases, databases 'O'' to '3'.

The database "0'" is an event mark, and stores the latitude and longitude, water depth, water temperature, and time measured at the marked point.The data stored in the database O is the wake track shown in Fig. 4(A). Each of databases 1 to 3 has a display pointer for an event recall mark (hereinafter referred to as "rERM"), and each stores 16 display positions at which the event mark is displayed. Each of databases 1 to 3 is configured as shown in FIG. The database area is 1
It is divided into areas with small θ. Each small area stores the display position for each event mark.

The display position for the event mark is the small area 1 to 16, and the event mark (hereinafter referred to as rEMJ)
are stored in order of generation and display time. 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 O, data of a plurality of data groups are stored, each data group consisting of longitude, latitude, water depth, water temperature, and time data corresponding to each event mark. ERM pointed to by display pointer
The data corresponding to the previous two event marks of this ERM are selected and read out and displayed in three columns at the lower part of the track display shown in FIG. 4(A). The ERM is selected by the display pointer and performs the function of reading data corresponding to the ERM and the two EMs before it.

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 EX will be displayed at your ship's current position in each of all displays, and this E
M becomes ERM. ERMs that were 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 that was indicated with a thick "+" mark will be displayed as a thin "+" mark, and the previous event mark that was indicated as a thin "+" mark will become an ERM and will be displayed as a thick "+" mark. Displayed with a +” mark. When the event mark key 59a and the key 59c are pressed again, the display pointer is shifted one position to the past. In this way, the ERM shifts to the previous EM. In the track display shown in FIG. 4(A),
The data measured at two points indicated by event marks and displayed on the lower part of the display surface of the display device changes to other data each time the ERM is shifted. The data displayed on the display is stored in area M2 and retrieved from there.

In FIG. 8(A), after the event mark setting mode is set, newly obtained data is first imported into database O at step n1. The newly obtained data becomes the latest data in database 0. Database O can store data obtained from a maximum of 16 locations. 18jl! ! After the data obtained at point is imported into database O, the oldest data is replaced by new data when new data is imported. In step n2, databases 1 to 3
Display pointers 0 to 2 within are set to the small area with the largest number. For example, if two event mark display positions are stored in databases 1 to 3, each display pointer is set to a small area with the number 3. i.e. number 3
The event mark represented by is the ERM. At step n3, the display position where the event mark is displayed is written into the track display database l. This EM display position is the current position of the ship. In step n4, this EM is made into an 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 become EMs. At step n6, ER
Data corresponding to N and the two EMs before it 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 for underwater situation display. In this way, the display position where EM is displayed is stored in the 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. The EM is displayed with a mark. Similarly, in step 8,
Regarding time-compressed underwater situation display, steps n3 to n5
will be carried out.

In FIG. 8(B), the operation of the event recall setting mode will be explained. First, step nl.

Then, all ERM display pointers are shifted by one to the side with the smaller number. In step nil, steps n4 and n5 are performed to update the mark display on the screen in the track display. step n
At 12, 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, in steps n13 and n14, steps n4 and n5 are also performed for the underwater situation display and the time-compressed underwater situation display in order to update the mark display. This completes the series of operations.

In the embodiment of the present invention shown in FIGS. 4 to 8(B), as described above, EM is displayed on any one of the track display, underwater situation display, and time-compressed underwater situation display. If set, also in the other two displays,
EX is automatically set and displayed at the current position of the ship. Furthermore, one of the multiple EMs is changed to ERM, that is, the thin line "+" mark is changed to the thick line "+" mark, so that the data corresponding to the ERM and the two EMs before it are displayed in the track display. and during the time-compressed underwater situation display to easily compare any of your ship's past positions with the underwater situation below that past point, and also
Own ship's position and water depth obtained at the point indicated by M,
Numerical data representing water temperature and time is displayed during the track display.

In the above embodiment, three EXs 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 one point in the past on the track being displayed and at each corresponding point in other displays. You can also do it.

In FIG. 9(A), the signal converter 71 includes a timer 7
2, the ship position signal generator 1
Convert the output signal from 1 to a 3-bit digital signal,
It is supplied to one input terminal of the display memory 13b. timer 7
2 repeatedly counts a predetermined number of clock pulses, generates an output signal every time the counted value reaches the predetermined value, and connects the control input terminal of the signal converter 71 and the control input terminal of the signal converter 73. supply to Display memory 1
3b 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 a write control circuit 12,
The data is written into three memory elements of the display memory 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 supplies them to three control input terminals of the color display 9a. The mark position designation circuit 75 is
Based on the output signal from the storage controller 26, 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 is generated and supplied to the input terminal of the signal converter 73. . The signal converter 73 continuously generates a 3-bit digital signal in response to the output signal from the mark position specifying circuit 75 during a period determined by two adjacent output signals generated by the timer 72. The 3-bit digital signal from the signal converter 73 is sent to the storage controller 26.
and is written into three storage elements of the display storage 25b. Each display memory 25b has M rows and N
It consists of three memories, each consisting of a storage element array having columns of storage 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 76 generates signals corresponding to each of the seven colors and supplies them to three control input terminals of 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. 9(B), the track A and the horizontal direction mH are displayed in seven types on the upper and lower halves of the screen of the color display 8a periodically, for example, every 5 minutes. Displayed in color. 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 underwater situation below the part of the track shown in the same color. . 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 is accomplished in the configuration shown in FIG. 9A by appropriately setting timer 72 to generate an output signal and supplying it to signal converter 71. 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. Connecting.

In the embodiment shown in FIG. 10, the reflected signal captured within a certain time, e.g. - time, is 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 color different from the color of the rest. According to this configuration,
The distance traveled by the ship during this time is obtained from the displayed track. In FIG. 10, the A/D converter 24 supplies a digital signal obtained in response to the received reflected signal to the input terminal of the peak hold circuit 81.

The peak hold circuit 81 is composed 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. The comparator of the circuit 81 is connected to the controller 8
3, the reflected signals stored in the storage elements of one group are compared with the newly obtained reflected signals caused by other newly emitted detection signals, and the larger of the compared signals is generates a signal representing the amplitude of the other signal. 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. The timer 82 detects the received reflected signal by the peak hold circuit 8.
1 generates a signal representing the time to perform the operation being compared within 1.

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 associate two types of data displayed on the display surface of a display device at different times or at different locations on the same screen with each other. 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. FIG. 3(A) shows another embodiment of the present invention. FIG. 3(B) is an example of a display displayed on the screen of the display device used in the embodiment shown in FIG. 3(A). FIG. 4(A) is an example of a track display obtained by an embodiment of the present invention. 4th (B) is a display example of an underwater situation display obtained by an embodiment of the present invention. FIG. 4(C) 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. 6th
The figure shows an external RAM used in the embodiment shown in FIG.
FIG. FIG. 7 is a diagram showing the configuration of each database shown in FIG. 6. FIGS. 8(A) and 8(B) are flowcharts showing the operation of an embodiment of the present invention. FIG. 9(A) is a block diagram of an embodiment of the present invention. Figure 9(B) is the same as Figure 9(A).
3 is an example of a display displayed on a display screen used in the embodiment shown in the figure. No. 1O is a block diagram of a portion of another embodiment of the present invention.

Claims (11)

[Claims] (1) A first memory device that stores a first data signal that is sequentially written; a second memory device that stores a second data signal that is sequentially written; and the first data signal and the second data. a display device that displays the data signal on two corresponding parts obtained by dividing the entire display surface of the display device into two; and a display device that reads the data signal from the first storage device and the second storage device and displays the data signal. A display device comprising readout means for supplying a readout device to a device, and means for correlating the two obtained displays with each other. (2) a first storage device that stores first data signals that are sequentially written; a second storage device that stores second data signals that are sequentially written; and the first data signal and the second data. a display device that selectively displays signals on its entire display surface at different times; and a readout device that reads out the data signals from the first memory device and the second memory device and supplies these data signals to the display device. A display device comprising means and means for relating the two obtained displays to each other. (3) A display that displays the wake and the underwater situation under the wake on two corresponding parts obtained by dividing the entire display surface of the display into two, and a first display that stores signals corresponding to the wake. a second memory for storing signals corresponding to the underwater situation under the wake; and reading means for reading signals from the first and second memory and supplying these signals to the display. and means for correlating the two obtained displays with each other. (4) The means for associating the display includes a means for displaying a first mark that can move on a wake, and a means for displaying a first mark that is movable on a wake, and a means for displaying a first mark that is displayed at an appropriate point on a portion of the display surface where the underwater situation is displayed, with respect to a direction representing depth. 4. The track and underwater situation display device according to claim 3, further comprising means for displaying a second mark that moves in synchronization with the first mark in a perpendicular direction. (5) The means for associating the display includes means for sequentially displaying the wake in a different color at each predetermined time, and a means for displaying the underwater situation in a different color sequentially at each predetermined time on an appropriate part of the display surface where the underwater situation is displayed. 4. The track and underwater situation display device according to claim 3, further comprising means for displaying a straight line in a direction perpendicular to the direction representing the depth. (6) The means for associating the display includes means for generating a signal representing a time corresponding to the width of the portion of the display surface on which the underwater situation of the display is displayed, and a means for generating a signal representing a time corresponding to the width of the portion of the display surface on which the underwater situation of the display is displayed; 4. The track and underwater situation display device according to claim 3, further comprising means for displaying in a color different from that of the other parts. (7) The track and underwater situation display device according to item 3, further comprising means for displaying latitude and longitude line markers on a portion of the display surface where the track is displayed on the display. (8) The track and underwater situation display device according to item 3, wherein the second memory stores a signal based on a reflected signal captured at a predetermined time. (9) The means for associating the display includes means for generating a signal representing a time corresponding to the width of the portion of the display surface on which the underwater situation of the display is displayed, and a means for generating a signal representing a time corresponding to the width of the portion of the display surface on which the underwater situation of the display is displayed; 9. The track and underwater situation display device according to claim 8, further comprising means for displaying the display in a color different from that of the other parts. (10) A display device that selectively provides a track display that displays the track and an underwater situation display that displays the underwater situation below the track at different times on the entire display surface, and stores a signal corresponding to the track. a first memory device for storing a signal corresponding to an underwater situation under the wake; a second memory device for storing a signal corresponding to an underwater situation under the wake; and a second memory device for selectively reading out a signal stored in one of the first and second memory devices. A track and underwater situation display device comprising readout means for supplying a signal to a display and means for correlating the two obtained displays with each other. (11) The track and underwater situation display device according to item 10, further comprising means for displaying latitude and longitude line markers on the entire display surface of the display on which the track is displayed.