Sonar depth finder with relative depth LCD display

Details Sonar depth finder with relative depth LCD display Sonar depth finder with relative depth LCD display

1984-02-16

1987-02-17

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367111, 367112, 367900, G01S 1596, G01S 756

Patent

active

046445129

ABSTRACT:
A computer system is proposed for finding and displaying the depth and depth related values of an object in an aquatic environment in which and LCD display is subdivided into segments each representing a fraction of the total depth range in which the system is operating as well as a fraction of the transit time for the transmission of pulses within the depth range. Each segment is addressed and activated in response to the presence of a receiver output in the microprocessor for a given number of consecutive time-scans, thus providing a quasi-analog visual display of depth on the array of the segmented scale.

REFERENCES:
patent: 3539978 (1970-11-01), Stedtnitz
patent: 3683324 (1972-08-01), Hoxsie
patent: 3942149 (1976-03-01), Westfall, Jr.
patent: 4122429 (1978-10-01), Hatai

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