Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1999-03-18
1999-12-07
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367109, G01S 1596
Patent
active
059994908
ABSTRACT:
Reflected digital signals of a surface of the water, fish and a bottom are displayed by a usual scale on a half portion of the display board, reflected digital signals of fish and a bottom are reversely read from the second buffer function and are displayed at an enlarged scale on a second half portion of the display board, whereby the surface of the water is displayed on the upper portion of the display board and the bottom of the water is displayed on the lower portion of the display board and the flasher display is very easy to understand and fish inhabiting near the bottom and the bottom are displayed on an enlarged scale.
REFERENCES:
patent: 3964012 (1976-06-01), Yamamoto et al.
patent: 5065371 (1991-11-01), Leavell et al.
Muramatsu Yoshikazu
Shimauchi Yoshio
Yamamoto Tetsuya
Honda Electronics Co., Ltd.
Lobo Ian J.
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