Patent ID: 6625084
Filing Date: 2003-09-23
Classification: H04B

Abstract:
A system for acoustically passing electrical signals through a solid rigid boundary comprised of metal and having first and second opposite surfaces each free of openings, said system comprising:one or more first buffers for receiving electrical signals being transmitted from a first source; a plurality of modulators operatively and respectively connected to said one or more first buffers for modulating and combining said received signals of said first buffers with a first carrier signal and providing a representative modulated output therefrom; a corresponding plurality of transmitting transducers arranged in contact with the first surface of said solid rigid boundary and operatively and respectively connected to the modulated outputs of said plurality of modulators and developing a first acoustic output signal representative thereof; a corresponding plurality of receiving transducers arranged in contact with the second surface of said solid rigid boundary respectively in alignment with the corresponding ones of said plurality of transmitting transducers on said first surface, the respective of said plurality of receiving transducers being operatively and respectively connected to receive the first acoustic signal output of the corresponding ones of said transmitting transducers and developing a representative output thereof; a corresponding plurality of demodulators operatively and respectively connected to receive the representative output of corresponding ones of said plurality of receiving transducers and separating said first carrier signal therefrom leaving a first unmodulated electrical signal; one or more second buffers operatively and respectively connected to receive respective first unmodulated electrical signals of said plurality of demodulators and developing representative electrical signals for transmittal to a second source; one or more third buffers for receiving electrical signals being transmitted from a second source; one or more second modulators operatively and respectively connected to said one or more third buffers for modulating and combining the received signals of said third buffers with a second carrier signal and providing a representative modulated output therefrom; one or more second transmitting transducers arranged in contact with the second surface of said solid rigid boundary and operatively and respectively connected to the modulated outputs of said one or more second modulators and developing a second acoustic output signal representative thereof; one or more second receiving transducers arranged in contact with the first surface of said solid rigid boundary and in alignment with the one or more second transmitting transducers on said second surface and operatively connected to receive the second acoustic output signal of respective second transmitting transducers and developing a representative output thereof; one or more second demodulators operatively and respectively connected to receive the representative output of said one or more second receiving transducers and separating said second carrier signal therefrom leaving a second unmodulated electrical signal; and one or more fourth buffers operatively and respectively connected to receive respective second unmodulated electrical signals of said one or more second demodulators and developing representative signals for being transmitted to said first source.