Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent
1979-02-02
1981-02-24
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Echo systems
Returned signal used for control
43 4, 43 261, 367106, 367108, G01S 1588
Patent
active
042531659
ABSTRACT:
An angling machine is electronically controlled with a digital indication of the fishing depth by counting the number of revolutions of the winder or reel spool of the machine. The apparatus comprises a converter for connection to the transmitter and the receiver of an echo sounder, a pulse generator and a plurality of counters being included in the converter for indicating the actual depth as determined by the time interval between two signals from said transmitter and said receiver, respectively, and a plurality of comparators coupled to respective ones of said counters for comparing the counts thereof with the counts of the counters indicating the fishing depth. The angling machine has circuit means controlling the fishing functions thereof by correspondence between the counts of the respective, corresponding counters.
REFERENCES:
patent: 3528053 (1970-09-01), Rubin
patent: 3539978 (1970-11-01), Stedtnitz
patent: 3588795 (1971-06-01), Linardos et al.
patent: 3922808 (1975-12-01), Rieth et al.
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