Patent · US Active

Semi-passive transponder

US10948594B2 · kind B2 · utility

1Cited by

6References

11Claims

0Family size

Assignee

SINTEFF TTO AS · NO

Inventors

Tone Berg · Trondheim, NO
Tonni F. Johansen · Trondheim, NO
Odd Trandem · Trondheim, NO

Key dates

Filing date	Jan 11, 2017
Grant date	Mar 16, 2021
Priority date	—
Expiry date	Apr 17, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04B11/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A semi-passive acoustic transponder providing identity information related to the transponder when it is reflecting a received pulsed acoustic signal underwater. The transponder includes a memory unit holding ID-sequence data controlling operation of the switching device, and an electronic circuit includes frequency adjusting means for adjusting the frequency and duration of the switch such that the duration of the ID-sequence data is shorter than the duration of pulses of the received acoustic signal. Additionally, a method and system may provide position and identity information related to one or more of said semi-passive acoustic transponders.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.