JPH0843524A - Fish finder - Google Patents

Abstract

(57) [Abstract] [Purpose] With the conventional fish finder that displays the reflected signal as a fish finder image in color on the display screen, the display color is fixed at the design stage, so the situation is different even for the fish fleet that you want to search most. Depending on the case, it may be displayed in a neutral color. Improve this. A display color determining circuit is provided, and a means for freely setting or selecting a display color of a desired reflection echo and displaying the color on a display screen is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish finder for displaying a fish finder image in color on a display screen, and more particularly to a color arrangement of the screen display color.

[0002]

2. Description of the Related Art As is well known in fish finder,
Ultrasonic waves are transmitted to the water to store the echoes reflected from the school of fish or the seabed in association with the water depth, and by repeating this operation within a specified range, the fish finder image in this range is displayed on the display screen due to the difference in the reflection echo level. Currently, a color display device is mainly used, and color-based display is performed due to the difference in reflected echo level.

In such a fish finder which performs color display, it is ideal to display the image of the reflection echo from the fish to be captured in the most prominent color for the purpose of use. If the fish school image is red or yellow, the seabed image is brown, the underwater without reflection echo is blue, and the other reflection echoes can be displayed in different colors such as an appropriate intermediate color, it will be a display that is easy to understand sensuously. Since the color arrangement is determined at the designing stage in the above device, the color arrangement may not always be displayed properly.

[0004]

As described above, since the color arrangement of the screen display colors of the conventional fish finder is determined at the design stage, it may not always be an appropriate color arrangement display. For example, even if a general reflection echo level from a school of fish is set at the design stage so that it is displayed in a prominent primary color, the reflection echo will be changed depending on the type of fish school, density, depth of water, and the state of the operating sea area. Since the levels are different, there is a problem that the fish school to be displayed in the most prominent color is displayed in an inconspicuous intermediate color.

The present invention has been made to solve the above problems, and a fish finder capable of displaying a reflection echo from an object whose purpose is to search for a fish school, etc., in any desired color. It is intended to be provided.

[0006]

A fish finder according to the present invention determines a display color in a fish finder which transmits an ultrasonic burst signal into water and displays the reflected signal in color as a fish finder image on a display screen. It is characterized in that a circuit is provided, and means for freely setting or selecting a desired display color of the reflected echo and displaying the color on the display screen is provided.

Further, the desired reflection echo is assumed based on the level of the reflection echo among the reflection echoes from the school of fish assumed from the water depth, the water depth position, the expansion in the water depth direction, the expansion in the distance direction, and the like. It is characterized in that it is a reflection echo from the school of fish that is targeted for fishing.

The means for setting or selecting the display color as desired and displaying the color on the display screen is provided with display color setting / selecting means, and the user operates the display color setting / selecting means. It is characterized in that it is displayed in the display color set and selected.

Further, when the desired reflection echo is selected, the device itself sequentially assigns prominent primary colors and assigns the prominent colors when the desired reflection echo is selected. It is characterized by the display color.

[0010]

The fish finder of the present invention is configured as described above, so that the reflected echo that needs to be identified first is different even if the fish species, density, water depth, and state of the sea differ.
It is possible to set the display color that is always the most prominent.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
In the figure, 1 is a transducer for transmitting and receiving ultrasonic waves in water,
A transmitter / receiver 2 drives the wave transmitter / receiver 1 and amplifies the received reflection echo. 3 is a data buffer for temporarily storing the reflection echo data output from the transmitting / receiving unit 2, 4 is a control unit for controlling the entire apparatus, 5 is a display color determining circuit for determining a display color according to the level of the reflection echo, 6
Is a color palette, 7 is a CRT controller, 8 is a CR
A T display, 9 is an operation unit, and 10 is a video buffer.

Next, the operation of this embodiment will be described. In addition to the operation of a normal fish finder, the fish finder of the present invention is configured so that the user can freely set or select the color scheme of the screen display color by operating the operation unit 9. To set or select the screen display color, first, a desired fish group for which the display color is to be set or selected is extracted from the reflection echo, and the display color is determined. Then, the desired fish school is extracted by the level of the reflection echo. Extraction is performed by the depth of the reflected echo in the depth direction and the fish density according to the level of the reflected echo. The echoes are extracted according to the scale of the school of fish due to the spread in the distance direction and the vertical direction. A gate with an arbitrary depth is provided at the water depth position of the reflection echo for extraction. A desired group of fish is extracted by combining these. There is a method such as.

When a desired school of fish is extracted, the display color thereof is then determined. In this method, the strength of the three primary colors themselves is designated to create the desired color. Select a display color by designating a color from a preset color sample. The device itself automatically assigns primary colors. In this case, if there are a plurality of fish groups for which the screen display color is desired to be determined, the primary colors that are most prominent are sequentially assigned, and inconspicuous intermediate colors are assigned to the reflected echoes other than the fish groups. There is a method such as.

FIG. 2 shows a method of determining a screen display color in a menu format in an interactive input device composed of the operation unit 9, the control unit 4 and the CRT display 8 in the determination of the screen display color as described above. Figure, 10 is a color sample,
20 indicates a cursor position. For example, if a fish school for which a display color is desired has a reflection echo level of 40 dB and a fish school density of five levels, RGB of the display color is set to 0, 5, and 5, respectively, and the color sample 10 indicated by the cursor 20 is displayed. First, a color based on this display color data is displayed. If this color is acceptable, an instruction to that effect is given to the operation unit 9
, The display color determination circuit 5 determines to display the reflection echo of the fish school in this color. When a color from the preset color sample 10 is designated and selected, the cursor 20 is moved to the desired color and an instruction to that effect is input.

In the above embodiment, the present invention is described only for the fish finder, but it goes without saying that it can be applied to sonar radar and the like.

[0016]

As described above, the fish finder of the present invention can display a desired reflected echo such as a fish school to be fished in a predetermined display color, so that it can be easily identified only by looking at the image display. Further, there is an effect such that visibility is improved and efficient search is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing a method of determining a screen display color according to a menu format.

[Explanation of symbols]

 5 Display color determination circuit 6 Color palette

Claims (4)

[Claims] 1. A fish finder that transmits an ultrasonic burst signal in water and color-displays the reflected signal as a fish finder image on a display screen by providing a display color determination circuit to appropriately set a display color of a desired reflection echo. A fish finder, characterized in that it is provided with means for freely setting or selecting and displaying in color on a display screen. 2. The desired reflection echo is assumed by the level of the reflection echo of the reflection echo from the fish school assumed from the water depth, the water depth position, the expansion in the water depth direction, the expansion in the distance direction, and the like. The fish finder according to claim 1, wherein the echo finder is a reflection echo from a fish school to be caught. 3. A means for color-displaying on the display screen by freely setting or selecting the display color as appropriate
The fish finder according to claim 1 or 2, characterized in that selection means is provided, and a user operates the display color setting / selecting means to display in a display color set / selected. 4. The means for color-displaying on the display screen by freely setting or selecting the display color as appropriate, when the desired reflection echo is selected, assigns prominent primary colors sequentially by the device itself. The fish finder according to claim 1, wherein the fish finder has a display color.