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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5267070 B1

PDFFull Text
Date of Patent:
Nov. 30, 1993

Filed:

May. 05, 1992

Underwater ir communication system

Applicant:
Inventors:

Ian H Stewart, Oxnard, CA (US);

James G Miller, Oxnard, CA (US);

Roman Kruchowy, Somis, CA (US);

Assignee:

The United States of America as represented by the Secretary of the Navy, Washington, DC (US);

Attorneys:

Kalmbaugh; David S.

Sliwka; Melvin J.

Primary Examiner:

Richard E Chilcot, Jr

Assistant Examiner:

Rafael Bacares

Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359141 ; 359152 ; 359158 ;
Abstract

An underwater communications system comprising first and second communications modules which transmit and receive data utilizing infrared radiation. Each module has a transmitter/receiver which converts each received data byte to RS-232 formatted data for transmission to a computer. Each communication module also includes a timer for providing a forty kilohertz pulsed signal to modulation circuitry which passes the pulsed signal through the modulation circuitry when a logic zero is supplied to the modulation circuitry and which inhibits the pulsed signal when a logic one is supplied to the circuitry. That portion of the pulsed signal which passes through the modulation circuitry is provided to a light emitting diode which transmits a pulsed burst of infrared radiation to an infrared light detecting unit within the second communications module. The infrared light detecting unit then provides a logic zero at its output when its receives a pulsed burst of infrared radiation for time period of approximately six hundred microseconds and a logic one when the unit fails to detect a pulsed burst of infrared radiation for a time period of six hundred microseconds.

Find Patent Forward Citations

Stewart, Ian. (1993). Underwater ir communication system (U.S. Patent No. 5267070). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5267070

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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