JPS6069514A - Track recorder - Google Patents

Abstract

PURPOSE:To display the extent of a contraction scale accurately all the time even if the size of a display device is different by displaying actual distance data on the longitudinal or lateral width of a display screen as display data on the extent of the contraction scale instead of a representative fraction as to a track recorder which displays position data obtained by a navigation device such as a loran receiver, omega receiver, and NNSS receiver. CONSTITUTION:The representative fraction (s) and a center position (c) are read out of an area of calculate the current display range. A pointer POINT assigned in a CPU10 is set. Data Pn set in memory #0 is read out. The coordinates of the longitude and latitude of the read data are converted and the data are written by specifying their write positions in a refresh memory 13. The position data sent from a navigation device is stored selectively in the memory #0, the stored data is displayed on a CRT2, and character data are displayed in the upper and lower areas on the display screen. The lateral width distance of the display screen is calculated from the representative fraction (s) and display area and displayed on the display screen.

Description

DETAILED DESCRIPTION OF THE INVENTION (al technical field) This invention applies to Loran receiver, Omega receiver or NN5S
Accumulates position data obtained from navigation devices such as receivers,
This invention relates to an improvement in a track recording device that displays a track on a display such as a cathode ray tube.

(b) Prior Art and Its Disadvantages Conventional track recorders that can display tracks on a display such as a CRT display are known, for example, from Japanese Patent Application No. 54-52716, which was previously proposed by the present applicant. As disclosed, position data sent from a navigation device is stored in a memory, and the stored data is read out from the memory and displayed on a display. Such a track recording device has the advantage that it can be easily reduced or enlarged without using an X-Y plotter, and furthermore, any position can be displayed on the display screen, making ship maneuvering extremely easy. However, in the track recording device using a CRT display as described above, the scale state of the current display screen is displayed in the scale ratio over the track display screen, so the track recording device does not have a display. When attempting to remotely display a track by connecting monitor displays of different sizes, there has been an inconvenience in that the scale ratio displayed on the remote display side does not match the actual scale ratio.

(C) Purpose of the Invention The purpose of the present invention is to provide a track recorder capable of accurately displaying the degree of scale without having to perform complicated processing such as coordinate conversion when performing remote display with display devices of different sizes. Our goal is to provide the following.

(d1 Structure and Effect of the Invention) To summarize, this invention uses actual distance data of the horizontal width or vertical width of the display screen instead of the scale ratio for the display data representing the degree of scale, so that the size of the display device is different. Also, the degree of scale is always displayed correctly.

According to this invention, since the actual distance of the horizontal or vertical width of the display screen is displayed instead of the scale ratio, the display data of the main body can be changed even when connecting a remote display with a different display size. You can simply send it to the remote display side without doing anything. This has the advantage of making remote display connection extremely easy.

(e) Embodiment FIG. 1 is a diagram showing a distance display state in a track recorder which is an embodiment of the present invention. In the figure, LAT represents a latitude line, and LON represents a longitude line. The "24.5 NMJ" displayed in the upper right corner of display 2 represents the actual distance of the width of the display screen. That is, in the display condition shown in Figure 1, the width of the display screen is 24.5 miles. Fig. 2 shows that the track recorder in the display state shown in Fig. 1 has an indicator 2 of different size.
FIG. 12 is a diagram showing a display state when the computer is connected as a remote display. Since the display data is sent directly from the track recording device on the main body side to the display 2', the displayed area on the map is the same as shown in Figure 1, but the size of the display screen is The scale ratio increases as the value decreases.

However, the actual distance of 24.5 miles across the display screen is an accurate value for both FIG. 1 and FIG. In this way, even if the size of the display device connected as a remote display to the track recording device on the main unit side is smaller or thicker than the display device on the main body side, the display screen displayed in the upper right corner of the screen The actual width distance always maintains an accurate value.

FIG. 2 is a front view of a track recorder according to an embodiment of the present invention. In the figure, ■ is the keyboard, 2 is the CRT, and 3 is the keyboard.
4 is a brightness adjustment volume, and 4 is a keyboard illumination volume.

Keyboard 1 consists of a total of 33 keys, and is used for screen operations, settings such as destinations and event marks, etc.
Performs data transfer between memories, initial settings, etc.

For screen operations, use the screen/cursor movement keys 101. Scale change key 102. Cursor on/off key 103. own ship center key 10
Do it in 4. The cursor on/off key 103 displays or erases a cursor on the display screen each time it is operated. The screen/cursor movement key 101 has a cursor displayed on the display screen. Sometimes it moves the cursor, and when the cursor is not visible it moves the screen.

A scale change key 102 enlarges and reduces the screen. The own ship center key 104 sets the own ship mark at the center of the display screen when the cursor is not displayed, and sets the cursor intersection at the center of the display screen when the cursor is displayed.

Use numeric key 1 to set destination marks, event marks, etc.
This is done using 06. For example, when displaying the number 1 destination mark at a predetermined position on the display screen, first specify the display color of the destination, then operate the destination key 106a, and then operate the 1 key. . The color is specified by specifying a code from 1 to 7. For example, when the 3 key is operated, green is specified, and when the 5 key is operated, purple is specified.

Memory operations such as data transfer between memories are performed by operating a memory operation function key 109. For example, if you want to transfer the data in the memory where the track is stored (memory number 0) to another additional memory, operate the memory transfer key. Also, if you want to erase all destination marks, event marks, navigation information, etc., operate the memory erase key. Furthermore, when transferring the current track storage data to the additional memory, the additional memory is erased by operating the erasable key prior to operating the memory transfer key.

Initial settings are performed using the numerical keys 106 and screen switching keys 110. The screen switching key 110 is a key for selecting whether the display screen is a track display screen or an initial setting screen, and the display screen is switched each time it is operated. On the initial setting screen, you can select the type of navigation device,
You can set the acquisition interval of position data sent from the controller, that is, the storage interval of position data in the track memory memory (memory 0), and select the smoothing coefficient to reduce the fluctuation of the track. , and also select whether or not to issue a buzzer alert when approaching the currently selected destination, and set the approach distance at which the alert should be issued. In this case, the numeric keys 106 are used to set the times of the intervals ↑ and a and the alarm approach distance.

Note that the track interrupt key 111 is used to interrupt display of the track,
It is used when restarting, and when the track is interrupted, only the own ship's mark is displayed, and if you operate it again in that state to resume displaying the track, the track will begin to be drawn from the position of the own ship's mark at that time. The wake color designation and color deletion key 105 specifies the color of the wake, or designates one color among the wakes designated in several colors to temporarily or permanently delete the wake. The track redisplay key 112 is used to display the track temporarily erased by the track color erase key to its original state. Furthermore, function keys lO7 such as mark erase key, destination number key, and release key can be used for event marks,
To erase the destination mark etc., use the numerical key 106 above.
Select one of the destinations set by , delete destination data on the initial setting screen, stop the alarm buzzer, etc. Furthermore, the display 2 number key 10B for the additional screen displays the data (current track screen) in the track memory memory (memory 0) and the data in the additional memory (additional screen), or displays only one of them. Choose one. The additional screen number key determines the additional memory, that is, the additional screen at that time.

FIG. 4 is a diagram showing an example of the display on the display screen.

In the figure, cx and cy represent cursors, and CP represents the cursor intersection. LAT represents a latitude line, LON represents a longitude line, and S represents a coastline set using nine of the numerical keys 106. Further, wPl, WP2 represent destination marks set using the numeric keys 106, and E1 to E3 represent event marks similarly set using the numeric keys 106.

Also, the marks and character data displayed at the top and bottom of the display screen represent the following contents.

■ When the cursors cx and cy are displayed, a 10 mark as shown appears. Also, when the cursor is not displayed, if the own ship mark is within the screen, the own ship mark is displayed, and if the own ship mark is outside the screen, an arrow indicating the direction (which of the eight directions) is displayed. coming out.

■ When the cursor is displayed, the position of the cursor intersection (latitude, longitude) is displayed, and when the cursor is not displayed, the position of your own ship is displayed.

■ The specified color of the current track is displayed on the first line, and the current specified color is displayed in parentheses on the second line.

■ When the cursor is displayed, the distance and direction from the own ship to the cursor intersection are displayed; when the cursor is not displayed, the ship's speed is displayed on the first line, and the course is displayed on the second line. Note that these ship speed and course are data sent from a navigation device.

■ If a water thermometer or fish finder is connected to the navigation device, the first line will display the water temperature and the second line will display the water depth.

■ The number of miles of screen width is displayed on the first line, and the screen specification status is displayed on the second line.

■ When a destination is selected, the latitude and longitude of the selected destination are displayed. In the illustrated example, the destination WP
This shows that I is selected.

■ If a destination is selected, display the distance and direction to the destination.

■ When a destination is selected, display the heading error when taking into account deviations in flow and compass errors. When the upper and lower triangular marks match, the correct course will be taken to reach the destination.

Next, the control section of the track recorder will be explained.

FIG. 5 is a block diagram of the track recording device.

Input data is input to the CPU 10 from the keyboard 1, and navigation data is input from the navigation device. Loran, NN5S, compass, gyro, etc. are used as navigation devices.
Obtain position and orientation data. ROMII stores a program that defines the operating procedure of the track recorder, and
The AM 12 stores position data input from the navigation device or destination marks, event marks, etc. input and set using the keyboard 1 within a maximum range of 1000 points. This RAM12 is the aforementioned track storage memory (memory 0)
, and is treated as the 0 screen, which is the reference screen.

The CPU 10 can further optionally connect multiple RAMs and multiple ROMs.1. Data in memory No. 0 can be transferred to each RAM. The expansion RAM and ROM have screen numbers 1 to n, and each has a storage capacity of 1000 points, similar to the RAM 12. In the illustrated example, the screen numbers are three R's numbered 1 to 3.
AM has been added, and two ROMs with screen numbers 4 and 5
has been added. In addition, RAM12.1-3 of 0 screen
Each screen's RAM is amplified by a battery bank, so that stored data can be retained even when the power is turned off.

The data in memory No. 0 constituting the track storage means is written into the refresh memory 13 in response to the operation of the keyboard 1. In this case, by operating the additional screen display 2 number key 108 as described above, only the data of the 0 screen, only the data of the specified screen, or the data in which the data of the 0 screen and the data of the specified screen are superimposed are displayed. Written, C
It will be displayed on RT2. The refresh memory 13 includes three graph ink memories for displaying tracks, event marks, maps, etc. in up to seven colors;
and a character generator for displaying latitude, longitude data and other characters. The color conversion circuit 14 converts the data stored in the graphic memory into a predetermined color signal based on the wake color designation key, the color data of the wake specified by the numeric key, -106, or the color data of other event marks. Output to CRT2.

6th TJ! U is the above RAMI2 that stores 0 screen data
FIG. 5 is a diagram showing the main part of the expansion memory (RAM or ROM).

In FIG. 6, the location of the destination WPT set using the numerical keys 106 is stored in area Ml.

The destination is set by placing the cursor on the destination, setting the destination number, and then operating the destination setting key 106a, as described above. In any case, if a color is specified using keys 1 to 7 before setting the destination number, the newly specified color data is added to the destination data and stored. If no color is specified, the color data already specified at that time is added.

Area M2 includes the navigation device NAV selected on the initial setting screen.
The type of is memorized.

The area M3 stores the interval at which the CPU 10 takes in the position data sent from the navigation device, that is, the storage interval t of the position data in the RAM 12. - Area M4 stores the scale ratio S of the display screen. This scale ratio S is changed when the scale change key 102 is operated.

Area M5 stores the center position C of the display screen. C
PU10 always monitors the center position C of the display screen, determines the coordinates of the display screen from this center position C and the scale ratio S, and calculates the display position of the current position, track, etc.

The number of points currently stored in the RAM 12 is stored in area M6. As mentioned above, the maximum number of storage points in the RAM 12 is 1000, and when 1000 points are exceeded, old data is automatically discarded and new data is newly stored. CPUl0 is in this area M6
By monitoring the number of memory points t stored in R
Controls data update for AMI2. Also RAM
12 (0 screen) data is sent to the refresh memory I3 as well, while monitoring the number of storage points t.

The designated color of the current track is stored in area M7. Fourth
If the designated color of the current track is displayed on the first line at the position marked with ■ in the figure, this designated color will be stored in area M7. As will be described later, each time CPUI O takes in position data from the navigation device, it adds color data stored in area M7 to the position data and stores it in RAM 12 (O number memo I month. is specified using the numeric keys 1 to 7 as described above.Since the graphic memory is composed of 3 memories, it is possible to display up to 7 colors, and the CPU10 uses the numeric keys 1 to 7. Writing control to the graphic memory is performed based on the color data set in step 7.

Area M8 stores the course from the current position to the selected destination.

In the area M9, a course error dD, which is the amount of deviation of the triangular mark displayed at the position marked with - in FIG. 4, is stored. This course error is the difference between the above course and the course that should actually be set, which is caused by the error of the compass itself and the unbalanced flow of the tidal current, and is the difference between the course set previously and the course actually set. (This direction is determined from at least two position data. It is determined from the difference in direction.)

Area M10 stores azimuth correction data eH, which is the difference between the previously set course and the direction in which the vehicle actually moved based on the course, that is, the azimuth amount to be corrected. This azimuth correction data eH is equal to other azimuth errors excluding the error of the compass itself. For example, errors based on drifting correspond to this azimuth correction data eH. In addition, areas M8 to MI
The data stored in O is used to display the mark ■ in Figure 4, and the display position of the upper and lower triangular marks is controlled according to the size of the heading error dD, and when the heading error dD reaches O, both triangular marks are displayed. The display is controlled so that the positions of

Direction data H input from the compass of the navigation device is stored in area Mll. Since this direction data H includes errors of the compass itself, the area M8. In area M12, which is used to calculate the course error dD of area M9 along with the data stored in MIO, position data input from the navigation device or event marks and destination marks set using the numerical keys 106 are stored as 1ooo The points are stored in the order in which they are entered, with the maximum number of points. Data corresponding to one point is composed of latitude and longitude data, color data added thereto, and ID data for identifying the type of data. The ID data identifies the position data input from the navigation device and the event mark and destination mark set by the numerical keys 106. When the data constituting one point is position data input from a navigation device, the color data becomes the color data set in area M7 as described above. Further, when the data constituting one point is an event mark or destination mark set by the numerical key 106, the color data becomes data of the currently specified color. The currently designated color is displayed on the second line at the position marked ■ in FIG. 4, and is set using the numerical keys 106.

The expansion memory stores position data, event marks, destination marks, etc., with a maximum of 1000 points, in the same state as that stored in area M12 of the RAM 12. The ROM in the additional memory stores map data that does not need to be changed, and the RAM in the additional memory stores tracks, event marks, destination marks, etc. that are transferred from the RAM 12. Ru.

FIGS. 8 and 9 show the basic operating procedure of the track recorder.

Figure 8 shows the position data sent from the navigation device in RAM.
12 is a flowchart of a data recording operation procedure to be stored in No. 12 (memory No. 0). First, step nl (hereinafter step ni is simply referred to as ni).

) receives position data from the navigation device. Next, it is determined whether the received data is received data from the navigation device set in area M2 (n2), and if so, the storage interval t set in area M3 is the same as the previous data reception. It is determined whether or not time has passed (n3). If t has elapsed, the received data is stored as current position data, color data set in area M7 and ID data for identifying the position data from the navigation device are added, and the data is stored in memory number 0. (,
Write to area M12 of RAM12).

This data recording operation procedure is executed every time data is sent from the navigation device and an interrupt is made to the CPU IO. As a result, based on the determination of n2 and 03, the received data from the selected navigation device is captured every time t passes and is written into the 0th memory.

FIG. 9 is a flowchart showing a display operation procedure for displaying data stored in memory No. 0.

First, in nlO, scale ratio S and center position C are set in area M4. The current display range is calculated by reading from M5. Since the display area of CRT2 is fixed, the scale ratio S
By knowing the center position 2C, the display range can be easily determined.

After the display range is set, pointers PO1 and NT allocated in CPU10 are then set to 1. Data Pn of memory No. 0 set by next pointer PoINT
(n 12). Then, based on the scale ratio S and center position C, the coordinates of the latitude and longitude data read out at n12 are converted to specify the writing position to the refresh memo January 3 (n13), and the writing is executed at n14.

, :(7) The steps from n12 to n14 are stored in memory No. 0 by incrementing the pointer at n16 and comparing the number of recording points p set in area M6 with the pointer POINT (7) value (n15). The display operation procedure described above is performed and completed for all the points that are displayed. Each time new data is stored in memory No. 0, that is, position data is written at n4 in FIG. This is executed every time a destination mark or an event mark is stored by key 106.

As described above, the position data sent from the navigation device can be selectively stored in memory No. 0, and the stored data can be displayed on the CRT 2.

When the position data stored in memory No. 0 is displayed on the CRT 2, an operation is started to display character data in the upper and lower areas of the display screen. This display operation is executed at n17. The character data explained with reference to FIG. 4 above is displayed in n17 at the display positions of ■ to ■ in FIG. It is calculated and displayed at the position marked ■ on the display screen. This will cause the top right corner of the display screen to
The actual distance of the current display screen width is displayed at the position.

Note that the position of the distance display may be any position on the display screen. Also, the vertical distance may be displayed instead of the horizontal distance of the display screen.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a distance display state in a track recorder according to an embodiment of the present invention. FIG. 2 is a diagram showing a distance display state when display devices of different sizes are connected to the track recorder as remote displays. 3 is a front view of the track recording device, FIG. 4 is a diagram showing an example of display on the display screen, FIG. 5 is a block diagram of the track recording device, FIG. 6 is a configuration diagram of the RAM 12, and FIG. FIG. 8 is a flowchart showing the data storage operation procedure, and FIG. 9 is a flowchart showing the display operation procedure. Figure 7 Figure 9

Claims (1)

[Claims] (11) In a track recording device having a track storage means for accumulating position data sent from a navigation device and storing it as a track, and a display device for reading and displaying data stored in the track storage means, the display means for calculating the actual distance of the horizontal or vertical width of the display screen from the size of the display screen of the device and the current scale ratio; and distance display means for displaying the distance at a predetermined position on the display screen. Track recording device.