JPH0351702Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention uses position information from radio navigation devices such as NNSS and Loran to receive the ship's track along with latitude and longitude lines using a meteorological satellite receiver. This invention relates to a device that combines and displays weather video information, etc., on a single CRT display screen in color.

(Conventional technology) Previously, own ship position was determined using the Mercator projection.
The CRT receives weather information in the form of infrared and visible light sent from meteorological satellites and a track indicator that is displayed on the CRT screen, and processes it.
There are weather information receiving and display devices that display latitude lines and longitude lines on a screen in monochrome or pseudo color.

(Problem that the invention aims to solve) However, since both are displayed on independent and separate displays, it is difficult to operate the ship or plan a voyage while comparing the own ship's track and weather information. It was extremely inconvenient.

This invention uses a meteorological satellite receiver to receive distribution information such as clouds and sea surface temperature in the vicinity of the own ship sent from meteorological satellites and displays it on a screen, along with the own ship's track and latitude and longitude lines. The purpose of this project was to provide a means to clarify the relationship between weather image information and ground position (latitude and longitude) by superimposing the information and displaying the information, thereby clarifying the positional relationship with the ship's own ship's track. It is something.

(Means for solving the problem) Receiving weather image information from a meteorological satellite receiving device,
A second arithmetic control that extracts weather image information that matches the display range determined by the first arithmetic controller, which performs arithmetic control to draw a track, latitude line, and longitude line in response to position information from Loran, NNSS, etc. A color CRT display is provided to transmit the colored weather video signal from the meteorological satellite receiver.
A refresh memory for three screens is stored corresponding to the primary colors red, blue, and green, and the information stored in the refresh memory is read out in synchronization with the sweep signal of the color CRT display and sent to the color CRT display. A video generation circuit is provided for displaying the weather image information in color together with the track, latitude lines, and longitude lines.

(Example) An example of the present invention shown in the drawings will be described in detail below.

FIG. 1 is a diagram showing an embodiment of the present invention, in which numeral 1 indicates a first arithmetic controller equipped with an arithmetic unit, memory, and an interface, which is mainly composed of a microprocessor, and which receives position information from Loran, NNSS, etc. receive. Furthermore, the position information is converted to CRT display information, and the first arithmetic controller displays it in color along with latitude line, longitude line data, etc. generated around the ship's position.
It is sent to the CRT display 2 and displayed as a track.
The above is equivalent to a conventional general track indicator.

Next, 3 is a meteorological satellite receiving device, which includes an antenna 3-1, a receiving device 3-2 that receives signals from TIROS-N or the meteorological satellite Himawari, etc., a control device 3-3, and an image storage circuit 3-4. , a color conversion device 3-5, etc., and outputs weather video information S2 including position information. Furthermore, TIROS-N series
In the case of APT, in order to know the position corresponding to the received APT video information, it is necessary to
Although it is necessary to receive orbit information, in this case, this receiving device can be provided in the meteorological satellite receiving device 3 and configured to automatically output position information corresponding to weather image information.

The main part M of the present invention will be described below. 4 is a second arithmetic controller, which, like the first arithmetic controller, includes an arithmetic unit, memory, and interface, and is mainly composed of a microprocessor. 5 is a refresh memory provided independently of the second arithmetic controller, and 6 is a video generator.

(Function) Next, the operation of the device of the present invention with the above configuration will be described. First, the arithmetic controller 1 calculates scale information and latitude lines of a sea area to be displayed.
Initial values for drawing longitude lines are set, and scale values, latitude lines, and longitude lines are drawn on the screen of the color CRT display 2 based on this information. Furthermore, the first arithmetic controller 1 receives position information from a position measuring device such as Loran or NNSS, converts it into CRT information, and sends it to a color CRT display 2 to display the ship's track. Also the first
The arithmetic controller 1 outputs a control signal S1 for controlling the second arithmetic controller 4.

On the other hand, the meteorological image information S2 and its position information from the meteorological satellite receiver 3 are sent to the second arithmetic controller 4, where according to the display area data such as the position scale sent from the first arithmetic controller 1, The display position and the weather image position are compared and the image at the matching position is extracted, and then the output of this arithmetic controller 4 is
Each of the color pixels of the CRT screen is stored in the refresh memory 5 corresponding to each color pixel. Note that the refresh memory 5 has a color display, so the red of the electron gun,
It consists of memories for three screens corresponding to blue and green, respectively, and colorized weather video information is stored in the corresponding refresh memory 5.

Furthermore, the stored meteorological video information from the refresh memory 5 is sent to the video generation circuit 6, and the control from the second arithmetic controller 4 is performed using the TV raster synchronization signal sent from the first arithmetic controller 1. In synchronization with this, the weather video signal corresponding to the display position is read out, a video signal S3 synchronized with the CRT is generated, and this is input to the color CRT display 2 to superimpose signals such as the track and weather information. and display it in color at the same time.

FIG. 2 is a diagram showing an example of a color display observed on a CRT screen according to the above-described embodiment of the present invention.
Weather image information using infrared rays (that is, the color changes depending on the temperature) is displayed with C in blue, C in red, and latitude and longitude lines in white.

(Effects of the invention) As described above, according to the invention, a navigator can read the temperature distribution on the sea surface and the location of tides from the weather video information and the latitude and longitude lines displayed on the device of the invention. Predict the location of fish communities by
When searching for schools of fish by making it easy to go straight to a place where there is a high possibility of finding schools of fish, and when you reach that place, move your boat so as to sweep near the tide. This has the effect of making it possible to observe wakes along with images of tides, making it easier to conduct efficient fish search behavior.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing an apparatus according to an embodiment of the present invention, and FIG. 2 is a graph showing an example of a composite color display observed on a CRT screen by this embodiment. DESCRIPTION OF SYMBOLS 1...First arithmetic controller, 2...Color CRT display, 3...Meteorological satellite receiving device, 3-1...Antenna, 3-2...Receiving device, 3-3...Control device, 3- 4...Screen storage device, 3-5...Color conversion device, 4...Second arithmetic controller, 5...Refresh memory, 6...Video generation circuit.

Claims (1)

[Scope of utility model registration request] Arithmetic control for drawing the track, latitude and longitude lines on the color CRT display based on position information from Loran and NNSS, and for sending display area data (position and scale) to the second arithmetic controller. a first arithmetic controller that performs arithmetic control; and the color display that receives an output signal from the first arithmetic controller and displays the color.
a CRT display; and a second arithmetic controller that receives meteorological image information from a meteorological satellite receiver and extracts meteorological image information that respectively matches the display area data determined and transmitted by the first arithmetic controller; , a refresh memory for three screens that stores colorized weather video information from the meteorological satellite receiving device under the control of the second arithmetic controller, corresponding to each of the three primary colors red, blue, and green of the color CRT display; Then, the information stored in the refresh memory is read out in synchronization with the sweep signal of the color CRT display and sent to the color CRT display, and the weather image information is displayed on the track, latitude line, and longitude line. What is claimed is: 1. A composite color display device comprising: a video generating circuit for displaying a composite color image;