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HIGH NOISE IMMUNITY EMERGENCY RESONDER COMMUNICATION SYSTEM

  • US 20090052714A1
  • Filed: 08/21/2007
  • Published: 02/26/2009
  • Est. Priority Date: 08/21/2007
  • Status: Abandoned Application
First Claim
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1. A high noise immunity communications system for emergency responder voice communications, comprising:

  • a first spread spectrum emergency responder communications device (SSERCD) mounted in or on a mask or helmet worn by an emergency responder, the first SSERCD comprising;

    a microphone to receive an audible input from the emergency responder and to provide an outgoing analog audio signal,an analog to digital (A/D) converter receiving the outgoing analog audio signal and providing outgoing digital audio data,a processor system packetizing the outgoing digital audio data and assembling incoming digital audio data packets,a near field spread spectrum data modem modulating and transmitting outgoing digital audio data packets and receiving and demodulating incoming digital audio data packets according to a spreading code from the processor system,a conversion circuit for converting incoming digital audio data to provide an incoming analog audio signal, anda speaker to receive the incoming analog audio signal and provide an audible output to the emergency responder; and

    a second SSERCD mounted in or on clothing or a uniform worn by the emergency responder, the second SSERCD comprising;

    a first push-to-talk (PTT) button providing a first talk signal when activated by the emergency responder,a second near field spread spectrum data modem operative according to at least one spreading code to modulate and transmit digital audio data packets to the first SSERCD and to receive and demodulate digital audio data packets received from the first SSERDC, anda second processor system operatively coupled with the first PTT button to receive the first talk signal and with the second data modem to packetize the digital audio data for transmission by the second data modem and to assemble digital audio data packets received by the second data modem, the second processor system operative to packetize and transmit assembled digital audio data packets to a near field spread spectrum data modem not associated with the emergency responder via the second data modem when the first PTT button is activated.

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