JPH0797133B2 - Display method on the indicator of the fish finder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention transmits ultrasonic waves toward water and receives the reflected ultrasonic waves from an object to be detected such as the seabed or a school of fish, and transmits the ultrasonic waves. The present invention relates to a fish finder that displays a school of fish on a display screen such as a single or a plurality of CRTs by a signal obtained by electrical processing, and particularly to a display method of various numerical data related thereto.

(Prior Art) Various numerical data such as ship speed, water temperature, and depth displayed on the display screen of a fish finder are very important for efficient fishing.

Until now, the fish finder has simply displayed the current values of the various numerical data in one corner of the display screen.

(Problems to be solved by the invention) However, in such a display method, the present value and the past value of various numerical data are compared, or the temporal change between the present value and the past value is compared and examined. However, it was not possible to achieve even more efficient fishing.

An object of the present invention is to provide a display method capable of easily and accurately grasping and recognizing the present value or past value of various numerical data or their temporal changes.

(Means for Solving Problems) The display method of the present invention is a plurality of methods for displaying a graph of a change with time from the present to the past of each of a plurality of types of numerical data detected by a fish finder. While the scales of the respective scales are displayed in different positions on the display screen of the display device in the same color, the respective numerical data corresponding to each of the plurality of scales are different from the color of the scales in a graph form. Further, it is characterized in that they are displayed in different colors from each other, and that the markers at the positions corresponding to each of the plurality of scales are individually displayed in colors corresponding to the respective colors of the various numerical data. I am trying.

(Operation) According to this display method, when a plurality of numerical data are displayed on the screen of the display at the same time, the scales of the respective graph displays have the same color, and they are displayed on the screen. Even if they are mixed up with each other, each graph display is displayed in a different color,
Since the identification marker of the color corresponding to the color of each graph display is displayed at the position corresponding to each scale,
It is possible to identify which scale the graphic display corresponds to, and to immediately and accurately read the scale.

(Example) Hereinafter, a display method on a display of a fish finder according to an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a simplified block diagram of a fish finder according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an ultrasonic transducer, which is driven by a transmission signal to emit ultrasonic waves into the water and converts reflected ultrasonic waves from the water into an electric signal, which is output as a depth signal. Depth sensor, 2
Is a ship speed sensor configured to output a ship speed pulse corresponding to the ship speed of a ship equipped with the fish finder of the present embodiment, and 3 is a thermistor, and is a water temperature signal corresponding to the water temperature. It is a water temperature sensor that outputs.

The sensors 1, 2 and 3 together form a triducer and are attached to the bottom of the ship.

Reference numeral 4 denotes a transmission / reception circuit which supplies a transmission signal to the depth sensor 1 to drive the transmission signal, receives the depth signal from the depth sensor 1, and receives and outputs the depth signal. Reference numeral 5 is a signal processing circuit that outputs a digital value (digital depth value) corresponding to the depth of the sea where the ship is located in response to a depth signal provided from the depth sensor 1 via the transmission / reception circuit 4, and 6 is a ship speed sensor. A ship speed pulse counter that counts the ship speed pulse from 2 and outputs the count value as a digital ship speed value, and 7 performs analog-digital (A / D) conversion of the water temperature signal from the water temperature sensor 3 and its analog- It is an analog-digital converter that outputs a digital conversion value as a digital water temperature value.

8 is a depth based on the digital depth value from the signal processing circuit 5, the digital speed value from the speed pulse counter 6, and the digital water temperature value from the analog-digital converter 7,
This is an arithmetic and control circuit composed of a CPU of a microcomputer, which outputs each data of ship speed and water temperature and outputs a control output for controlling each data. Reference numeral 9 includes two image memories composed of a dynamic RAM (random access memory), that is, a character image memory and a color image memory, and the respective data signals and address control signals from the arithmetic control circuit 8. It is a video RAM that responds to. The detailed structure of the video RAM 9 is shown in FIG.

Reference numeral 10 is a timing generating circuit for generating horizontal and vertical synchronizing signals H and V of the television. The synchronizing signals from the timing generating circuit 10 are given to the horizontal and vertical deflection yokes of the video RAM 9 and the cathode ray tube 11, respectively. The video RAM 9 is controlled to write to and read from the character image memory and the color image memory at the timing corresponding to the synchronization signal given from the timing generation circuit 10.

12 is given image data regarding the scale read from the character image memory 15 in the video RAM 9 and image data regarding the graph (depth, ship speed, water temperature) read from the color image memory 16, and It is a color conversion ROM that performs conversion into color signals R, G, B in response to an input and gives the color signals to the cathode ray tube 11.

FIG. 2 is a detailed circuit diagram of the video RAM 9. In FIG. 2, 13 and 14 are the horizontal direction (row direction, row) and the vertical direction (column direction) of the character image memory 15 and the color image memory 16, respectively.
Column) A horizontal address counter and a vertical address counter for generating respective read addresses. That is, if the screen of the display is composed of pixels of 256 × 256 dots in each of the horizontal direction and the vertical direction, the horizontal address counter 13 and the vertical address counter 14 each have an address count from 0 to 255 in decimal. Output values as horizontal and vertical addresses,
The horizontal address counter 13 counts from 0 to 255. When it counts up to 255, it counts up and starts counting from 0 again. This count timing corresponds to the horizontal scanning frequency of the television, and the count cycle from 0 to 255 corresponds to one horizontal scanning period. When the horizontal address counter 13 is cleared to 0, the horizontal address counter 13 outputs one count drive pulse to the vertical address counter 14. When the vertical address counter 14 receives the count drive pulse from the horizontal address counter 13, the vertical address counter 14 increments the vertical address count value by one. When the vertical address count value of the vertical address counter 14 reaches 255, the vertical address counter 14 counts up and is cleared to 0. The count cycle from 0 to 255 of the vertical address counter 14 corresponds to one vertical scanning period of the television.

Reference numerals 17 and 18 denote first and second address switching units that switch between read and write addresses and output, respectively. These first and second address switching units 17 and 18 are used to read the horizontal address counter 13 and The horizontal and vertical read addresses are output from the vertical address counters 14, respectively, and the horizontal and vertical write addresses supplied from the arithmetic control unit 8 are output during writing. The read address is a read address of the image data stored in each of the character image memory 15 and the color image memory 16, and the write address is an image data write address for the color image memory 16. 19 indicates both horizontal and vertical address counters 13 and 14 when reading image data
It is a third address switching unit for a character image memory to which each read address in the horizontal and vertical directions from is given. Since the character image memory 15 is a dynamic RAM, the third address switching unit 19 uses the horizontal read address as its row direction (row direction) address.
The address input is switched between the case of inputting into the character image memory 15 and the case of inputting the vertical read address as the column direction (column direction) address into the character image memory 15.

Reference numeral 20 denotes a read address (from the vertical address counter 14) or write address (from the arithmetic control unit 8) in the vertical direction from the second address switching unit 18 and a write / read address in the vertical direction from the image feed counter 21. It is an adder for adding. The image feed counter 21 has an 8-bit configuration that counts image feed triggers given from the arithmetic control unit 8 and is cleared to 0 when the count value reaches 255.

A fourth address switching unit 22 for the color image memory is provided with the address input in the horizontal direction for reading and writing from the first address switching unit 17 and the address input in the vertical direction from the adder 20. The fourth address switching unit 22 is also for switching the row direction address and the column direction address of the color image memory 16 in the same manner as the third address switching unit 19 and inputting the address to the color image memory 16.

In the character image memory 15, fixed image data corresponding to each scale on the display screen 23 displayed as shown in FIG. Is written in.

FIG. 3 will be described. In FIG. 3, 24 is a depth scale (unit: meter [M]), 25 is a water temperature scale (unit: ° F), and 26 is a ship speed scale (unit: knot [KTS]).
The scales in the examples include the scale values. Each scale is displayed in white. 27 is a depth graph, 28 is a water temperature graph, and 29 is a ship speed graph. Each graph is displayed in a different color. For the sake of convenience, the dashed line, to show that each graph is displayed in a different color in the drawing,
It is shown in dashed and solid lines. On the display 23 shown in FIG. 3, the right end of the screen is displayed as the latest graph data.

By the way, in this case, since the scales are displayed in white, in this display state, even if each graph is displayed in a different color, it is difficult to identify which scale the graph corresponds to. Therefore, in the embodiment, the depth marker 24, the ship speed scale 25, and the water temperature scale 26 are displayed on the lower side of the display screen 23 corresponding to the respective depth markers, ship speed graphs, and water temperature graphs.
0, 31 and 32 are scrolled (described later). The identification marker 30 corresponds to the depth graph, and the identification marker 31
Corresponds to the ship speed graph, and the identification marker 32 corresponds to the water temperature graph.

Therefore, for example, when viewing the past and present seabed depth from the depth graph, the graph having the same color as the identification marker 30 is the depth graph, and the position of the identification marker 30 on the screen corresponds to the scale 24. Therefore, it is possible to easily study the past and present depth changes and to carry out fishing corresponding to them. The same applies to the ship speed graph and the water temperature graph.

Next, the operation will be described. The display screen 23 has a text memory
The scale data read from 15 is displayed as shown in FIG. Reading from the character image memory 15 is performed by the horizontal and vertical addresses from the address counters 13 and 14, respectively. When each graph is displayed as shown in FIG. 3, it is assumed that the rightmost end of the drawing is the latest graph data and that graph is scrolled to the left. Therefore, the left end is the oldest graph data.

Numerical data regarding the depth, the ship speed and the water temperature from the depth sensor 1, the ship speed sensor 2 and the water temperature sensor 3 are given to the arithmetic and control unit 8. The arithmetic control unit 8 outputs these numerical data to the color image memory 16 of the video RAM 9 and
Each horizontal and vertical write address for writing the numerical data to the corresponding address of the color image memory 16
1, input to the second address switching unit 17, 18.

In this case, numerical data is written in the 0th line of the color image memory 16 in the column direction. Therefore, the vertical write address 0 is input to the adder 20 from the arithmetic control unit 8. But,
Since the address count value x is output from the image feed counter 21, the output of the adder 20 is x. As a result, the numerical data is actually written in the color image memory 16 at the x-th line in the column direction.

Next, when reading out the numerical data written in the x-th line of the color image memory 16, the output of the adder 20 becomes x, so that the 0th line (the right end in the drawing) of the display screen 23 is displayed. The numerical data of the x-th line of the color image memory 16 is displayed.

Then, when you want to scroll the numerical data,
The count value of the counter 21 is decreased by -1. Then, reading is performed from the (x-1) th line. As a result, the numerical data displayed on the display screen is apparently shifted to the left by one line, and the numerical graph is scrolled to the left.

The identification marker will be described. The identification marker writes the data of each identification marker to the corresponding address during the pause period until the writing of one line relating to the numerical data to the color image memory 16 is completed and the writing of the next numerical data is started. This writing is repeated. Then, each identification marker is updated to the adjacent identification marker at the writing position of the adjacent identification marker. As a result, the identification markers 30, 31 and 32 are scroll-displayed as shown in FIG.

(Effect of the invention) As described above, according to the present invention, when a plurality of numerical data are displayed simultaneously and each of them is displayed as a graph on the screen of the display simultaneously, the scales of the respective graph displays have the same color, Moreover, even if those graph displays are crossed on the screen, the respective graph displays are displayed in different colors and the identification marker of the color corresponding to the color of each graph display is provided at the position corresponding to each scale. Since it is displayed, it is possible to identify which graduation the graphic display corresponds to and read it immediately, accurately and easily.

[Brief description of drawings]

FIG. 1 is a block diagram of a fish finder according to an embodiment of the present invention, FIG. 2 is a detailed circuit diagram of the video RAM of FIG. 1, and FIG. 3 is a screen display example of a display of the fish finder of the embodiment. FIG. 11 is a display unit, 15 is a character image memory, and 16 is a color image memory.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Genji Mori 9-52 Ashihara-cho, Nishinomiya-shi, Hyogo Inside Furuno Electric Co., Ltd. (72) Yoshinari Yoshida 9-52 Ashihara-cho, Nishinomiya-shi, Hyogo Furuno Electric Stock company (72) Inventor Toshio Kozaki 9-52 Ashihara-cho, Nishinomiya-shi, Hyogo Furuno Electric Co., Ltd. (56) Reference JP-A-57-118173 (JP, A) JP-A-58-79178 ( JP, A)

Claims (1)

[Claims] 1. A plurality of graduations for displaying a change over time of each of a plurality of types of numerical data detected by a fish finder from a present to a past in the form of a graph are respectively displayed on the display device in the same color. While being displayed at different positions on the screen, each of the various numerical data corresponding to each of the plurality of scales is displayed in a graph different from the color of the scales, and displayed in different colors from each other, and A method of displaying on a display of a fish finder, characterized in that markers are displayed at positions corresponding to the plurality of scales respectively in colors corresponding to respective colors of various numerical data thereof.