JPS6245265A - Overall receiving and displaying device for fishing information - Google Patents

Abstract

PURPOSE:To decrease the cost of equipment and to relieve the load of maintenance by applying a unidirectional digital picture processing and cathode ray tube display to a satellite picture signal and a facsimile signal. CONSTITUTION:A radio wave from the satellite Noah is received by an antenna 12 and fed to a changeover circuit 5 via a reception section 13. Further, a fishing facsimile broadcast and a fishing broadcast are broadcast in a radio wave of a short band and the radio wave is received by an antenna 14 and fed to the circuit 5 via a reception section 15. The circuit 5 uses a control signal from a CPU 7 to select either a satellite picture signal or a facsimile signal and sends it to the CPU 7 via an A/D conversion circuit 6. The CPU 7 applies various picture processings such as magnification, coloring, picture shift, superimposition and combination processings. A digital signal subjected to the picture processing is fed and displayed on a cathode ray tube display device 4 via a D/A converter 10.

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention is mainly intended for use on fishing boats and artificial satellites.
This system receives sea surface image information, fishery facsimile broadcasts, fishing and sea condition broadcasts, etc. from ゛, stores these received signals as appropriate, performs image processing on them, and displays fishery information centrally on a cathode ray tube display. This invention relates to a comprehensive reception display device.

(Prior art) Traditionally, fishing boats that have set out on the ocean to fish have obtained the information necessary for their operations (hereinafter referred to as fishing information) by using various artificial satellites to capture images of the sea surface from above and transmit that information wirelessly. Satellite image direct reception system that directly receives images,
There are systems for receiving fishing facsimile broadcasts from land, and systems for receiving fishing and sea condition broadcasts by radio (facsimiles are also used in some cases). Usually, a fishing boat is equipped with either or both of a fishing facsimile broadcast receiving device and a fishing sea condition broadcast receiving device in addition to a satellite image direct receiving device. All of these are well-known techniques.

(Problems to be Solved by the Invention) However, each of the above-mentioned systems is an independent system, and therefore the equipment and equipment of each system, including the display means, are provided completely separately and independently. For this reason,
There is a problem in that the user has to purchase two or three devices separately, resulting in expensive equipment as a whole.

Furthermore, since the fishing facsimile broadcast receiving device and the fishing and sea condition broadcast receiving device use a facsimile recorder, etc., there are problems in that maintenance thereof requires cost, time, and personnel.

Furthermore, each system alone is insufficient in terms of the content of information obtained.For example, the satellite image direct reception system has the following drawbacks.

(1) Although sea surface temperature information can be obtained in real time, it is up to the fishing chief to make empirical judgments about which fish species are in which areas based on that temperature information.

(2) Undersea information such as water quality (saltness, transparency), flow (
Information such as tidal current direction and velocity) and seafloor topography cannot be obtained.

(3) If the sea area where you want to obtain information is covered with clouds, the value of fishing information will be halved.

On the other hand, fisheries facsimile broadcasts and fishing and sea condition broadcasts have the following drawbacks.

(1) The provision of sea surface temperature information is delayed by one to several days because image information from satellites is analyzed and processed on the ground.

(2) The sea surface temperature information provided is only black and white binary isotherm information, not grayscale information, and analysis cannot be performed.

The purpose of the present invention is to reduce equipment costs and the burden of maintenance by centralizing the processing and display of the three types of fishery information, in view of the problems and drawbacks of the prior art. It is an object of the present invention to provide a fishery information comprehensive reception and display device that can mutually compensate for the shortcomings of each of the above-mentioned systems individually by using a pond system.

(Means for Solving the Problems) The present invention has the following means configuration to achieve the above object. That is, the fisheries information comprehensive reception and display device of the present invention includes: means for receiving image data information from various satellites; receiving means for receiving data information from fisheries facsimile broadcasts and/or fishery sea condition broadcasts; an A/D conversion circuit that receives the received signal from the data receiving means and the received signal from the fishing facsimile broadcast and/or the fishing and sea condition broadcast receiving means, and converts these into digital signals;
storage means for storing the converted digital signal;
A CPU performs one or more of image processing such as image enlargement, coloring, display, image shifting, and image overlapping synthesis on the digital signal, and converts the digital signal subjected to each of the above processing into an analog signal. and a cathode ray tube display means for displaying an image based on the analog signal.

(Function) Hereinafter, the function of the fishery information comprehensive reception and display device of the present invention having the above-mentioned configuration will be explained.

First, the means for receiving image data from a satellite (satellite image data receiving means) receives a signal from the satellite that captures the sea surface situation from above and sends screen information via radio waves, amplifies and detects it, and converts it into an analog satellite image. Output a signal. The means for receiving data from the other fishing facsimile broadcast and/or fishing and sea condition broadcast receives the radio wave of facsimile information, amplifies and detects it, and outputs an analog facsimile signal.

The satellite image signal and facsimile signal thus obtained are applied to image processing means. The image processing means includes an A/D conversion circuit that converts analog signals applied to the means into digital signals, a CPU that performs various types of image processing, storage means such as a memory element or magnetic tape, and image processing. D/A converts digital signals back into analog signals
It has a conversion circuit.

The satellite image signal and facsimile signal applied to the image processing means are first converted into digital signals by an A/D conversion circuit. The converted digital signal is subjected to various image processing by the CPU. The specific contents of this image processing include enlargement processing in which the displayed image is enlarged when displayed on a cathode ray tube display means using processed analog signals, and coloring to make the displayed image easier to visually grasp. , shifting of displayed images, overlapping processing of multiple images, etc. The memory element performs a memory function necessary for carrying out these various types of image processing. Further, a storage means such as a magnetic tape serves as a recording means for the obtained data.

Digital signals subjected to such image processing are D/A
After being converted into an analog signal by a conversion circuit, it is applied to a cathode ray tube display means and displayed.

Since the fisheries information comprehensive reception and display device of the present invention has the above-described configuration and operation, first, it is possible to easily switch and display satellite images and facsimile images on the same display means, and also enable superimposed display. It is.

Similarly, by pulling out past data recorded in the storage means, it is possible to perform a switching display for comparison between past and present data, or to display aspects of changes from the past to the present by sequentially superimposing them. can.

In addition, by coloring the satellite image and using a color scale, it becomes possible to display the temperature of the sea surface, and by superimposing it with facsimile isotherm information, analysis becomes easier.

By performing unified digital image processing and cathode ray tube display for satellite image signals and facsimile signals in this way, it is possible to separately provide a satellite image direct receiving device, a fisheries facsimile broadcast receiving device, and a fishing and sea condition broadcast receiving device as in the past. Since it is not necessary, equipment costs can be significantly reduced, and since a facsimile recorder is not used, the burden of maintenance is also reduced.

Furthermore, because it performs unified image processing and display,
The shortcomings of each conventional device can be easily compensated for by the advantages of the other device. That is, since switching display and superimposed display are possible, information that cannot be obtained from satellite image display or insufficient information can be obtained from facsimile image display by switching, and vice versa. Furthermore, by displaying both in a superimposed manner, it becomes possible to understand information that is uncertain when using only one of them as more reliable information.

Enlarged display, image shift, coloring, etc. make the above observations easier.

(Example) Hereinafter, an example of the apparatus of the present invention will be described based on the drawings. FIG. 1(a) is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention.

Satellite NOAA (NOAA) normally emits VHF band radio waves from 20 N0AA series satellites.
It is possible to receive multiple times. Radio waves from the satellite NOA are received by an antenna 12 constituting the satellite image data receiving means 1,
The received signal is amplified and detected by the receiving section 13 and applied to the switching circuit 5 of the image processing device 3 as an analog satellite image signal.

Further, fisheries facsimile broadcasts and fishing and sea condition broadcasts are broadcast using shortwave radio waves, and these radio waves are received by the antenna 14 constituting the fisheries facsimile broadcast receiving means 2, and are amplified and detected by the receiver 15, resulting in an analog facsimile signal. It is added to the switching circuit 5 as a signal. The switching circuit 5 is C
Depending on the control signal from the PU 7, either the satellite image signal or the facsimile signal is selected and sent to the A/D conversion circuit 6. The A/D conversion circuit 6 receives the analog signal from the switching circuit 5.
Convert the log signal into a digital signal and send it to the CPU 7. The CPU 7 performs various types of image processing on the received signals, ie, enlargement processing, coloring processing, image shift processing, overlapping display processing, and combination processing thereof.

The NoAA image memory 8 stores image information from the satellite N0AA, the fishing facsimile memory 24 stores facsimile information of fishing facsimile broadcasts or fishing sea condition broadcasts, and the annotation common memory 25 stores annotations such as date, time, satellite base, etc. (＾onotation:
Note) Memorize information.

Each piece of information stored in each of the memories is processed by controlling the display control unit 23 via the operation unit interface 26 in response to a command from the operation unit 27. NoA
When superimposing (synthesizing) the image information in the A-image memory 8 and the image information in the fishing facsimile memory, the high-speed image processor 22 generates a NoAA image in order to match the image dimensions (size, projection method). The contents of the memory 8 are converted into images at high speed, and the contents of the fishing facsimile memory 24 are inserted and synthesized, and the resultant images are stored in the synthesized image memory 21.

The look-up table 28 controls the levels of red, green, and blue in order to color various images, enlarges or reduces the 0 image to perform appropriate coloring, switches between satellite image display and facsimile image display, and displays satellite image and The display control unit 23 performs the composition of the annotation information and the composition of the facsimile image and the annotation information.

Further, past data is recorded and stored in the magnetic tape cassette 9. Digital signals that have undergone image processing such as 0 or more are converted into analog signals by the D/A conversion circuit 10 and output as output signals of the image processing device 3. Ru. This output signal is applied to the cathode ray tube display 4 and displayed. Also CPU
The output signal of 7 is also applied to the printer 11 and printed as necessary. FIG. 1(b) is a diagram showing an example of a display on a display surface of a cathode ray tube display.

Further, in this embodiment, the selection of images from the satellite NOAA and information from the fishery facsimile broadcast is determined in advance by a registration key using a pre-registration system. Previously, this pre-registration key was only for N0AA satellites, but with the device of the present invention, it can also be used to obtain information from fishery facsimile broadcasts, etc.
We are planning improvements. FIG. 2 is an explanatory diagram of information selection based on advance registration. The selection circuit 16 receives satellite image information (NOAA
information) and fishing facsimile information are input, a selection signal for stored information registered in advance is added to the selection circuit 16, and the input information is sent to the memory A17 by following either route shown by the dotted line. , is sent to memory B19.

The outputs of memory A 17 and memory B 19 are sent to digital cassette 18 and also to selection circuit 20.

Here, after selecting which one to display, the D/A
The signal is converted into an analog signal by the conversion circuit 10 and sent to the cathode ray tube display 4.

Registered images are automatically received and recorded as follows.

That is, 1) Selection based on N0AA type and route → selection of memory storage.

■Selection by N0AA type and route → Selection of recording on digital cassette.

■Selection of fishing facsimile time and information content → selection of memory storage.

■Selection of fishing facsimile time and information content - °Selection of digital cassette recording.

■Other features are the same as conventional satellite image receiving systems.

Also, how to store, recall, and play back recorded images.
This is the same as in the conventional satellite image receiving system. This adds fishery facsimile information to conventional satellite information, making multifaceted analysis possible.

In addition, for information other than the above, "Himaari 20 MS"
, the addition of the Soviet satellite rMETEOR,J and radiotelephone fishing and sea state broadcasts is likewise possible. Here, we show the system for collecting information using the satellite N○AAJ and the "Fisheries Facsimile", which are the most frequently used systems.

(Effects of the Invention) Since the fishery information comprehensive reception and display device of the present invention has the above-described configuration and operation, it has the following effects. First, satellite images and facsimile images can be easily switched and displayed on the same display means, and superimposed display is also possible. Similarly, by pulling out past data recorded in the storage means, it is possible to perform a switching display for comparison between past and present data, or to display aspects of changes from the past to the present by sequentially superimposing them. can.

In addition, by coloring the satellite image and using a color scale, it becomes possible to display the temperature of the sea surface, and by superimposing it with facsimile isotherm information, analysis becomes easier.

By performing unified digital image processing and cathode ray tube display for satellite image signals and facsimile signals in this way, it is possible to separately provide a satellite image direct receiving device, a fisheries facsimile broadcast receiving device, and a fishing and sea condition broadcast receiving device as in the past. Since it is not necessary, equipment costs can be significantly reduced, and since a facsimile recorder is not used, the burden of maintenance is also reduced.

Furthermore, because it performs unified image processing and display,
The shortcomings of each conventional device can be easily compensated for by the advantages of the other device. That is, since switching display and superimposed display are possible, information that cannot be obtained by satellite image display or insufficient information can be obtained by switching to facsimile image display, and vice versa. Furthermore, by displaying both in a superimposed manner, it becomes possible to understand information that is uncertain when using only one of them as more reliable information. Enlarged display, image shift, coloring, etc. make the above observations easier.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment device of the present invention;
FIG. 2 is an explanatory diagram of information selection based on advance registration. 1... Satellite image data receiving means, 2...
...Fisheries facsimile broadcast receiving means, 3...
Image processing device, 4... Cathode ray tube display,
5...Switching circuit, 6...A/D conversion circuit, 7...CPU, 8...NoA
A image memory, 9...magnetic tape cassette,
10...D/A conversion circuit, 11...
・Printer, 12.14... Antenna, 1
3.15... Receiving section, 16... Selection circuit, 17... Memory A, 18...
・Digital cassette, 19'...Memory B, 20...Selection circuit, 21...
Composite image memory, 22... High-speed image processor, 23... Display control unit, 24...
...Fishery facsimile memory, 25...
・Common memory for annotation, 26...
Operation unit interface, 27... Operation unit,
28... Lookup table.

Claims (1)

[Claims] means for receiving image data information from various satellites; receiving means for receiving data information from fisheries facsimile broadcasts and/or fishing and sea condition broadcasts; receiving signals from the satellite image data receiving means and the fisheries facsimile broadcasts; and/or an A/D conversion circuit that receives the received signals from the fishing and sea condition broadcast receiving means and converts them into digital signals, a storage means that stores the converted digital signals, and an image enlarging circuit for the digital signals. , color display,
Image processing means comprising a CPU that performs one or more image processes such as image shifting and image superimposition synthesis, and a D/A conversion circuit that converts digital signals subjected to each of the above processes into analog signals. A comprehensive reception and display device for fisheries information, comprising: and; a cathode ray tube display means for displaying an image using the analog signal.