Browse Prior Art Database

Infrared Transmitters/Receivers for Person-to-Person Recognition

IP.com Disclosure Number: IPCOM000117127D
Original Publication Date: 1995-Dec-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Kane, WF: AUTHOR [+5]

Abstract

The invention relates to a device enabling personnel, particularly security personnel, to recognize one another at a distance. The device is designed to prevent police or security persons from firing at one another due to mistaken identities. The devices would be worn, for example, by police, military, armored car, security guard, or agents who might come in contact with undercover agents on assignment. All of the undercover agents would also be wearing these same devices in order to communicate with both other under cover or in-uniform friendly agents. The invention utilizes encoded infrared beams and detectors worn by security personnel in the field.

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Infrared Transmitters/Receivers for Person-to-Person Recognition

      The invention relates to a device enabling personnel,
particularly security personnel, to recognize one another at a
distance.  The device is designed to prevent police or security
persons from firing at one another due to mistaken identities.  The
devices would be worn, for example, by police, military, armored car,
security guard, or agents who might come in contact with undercover
agents on assignment.  All of the undercover agents would also be
wearing these same devices in order to communicate with both other
under cover or in-uniform friendly agents.  The invention utilizes
encoded infrared beams and detectors worn by security personnel in
the field.

      The infrared technology needed here has already been developed
for TV controllers.  The technology makes use of modulated infrared
beams to send control codes.  A variety of low-cost infrared
emitters, receivers, tuned amplifiers, and one-chip microprocessors
for sending and/or decoding are presently available.  An operating
range of 20-40 feet is standard and can be increased by using extra
infrared emitters.

      In its simplest form, the invention consists of a device which
alternates between sending an omni-directional coded infrared
transmission, and checking for the reception of a similar
transmission sent by other agent's units.  All units share a common
modulation frequency and code.  The device includes a means to...