Digital output transducer

Details Digital output transducer Digital output transducer

1989-02-17

1991-09-24

Olms, Douglas W.

Pulse or digital communications

Repeaters

Testing

375 27, 381168, H04B 1404, H04R 1904

Patent

active

050517996

ABSTRACT:
Contained within a single housing (120), is a transducer (100) for receiving an acoustic signal, an analog-to-digital converter (108), which changes the output of transducer (100) into a series of digital pulses representing the incoming acoustic signal. The output of the system may be in serial form. This serial output (114) is transmitted (116) to a remote receiver (122) by wires, light, optical fibers, or as radio waves. The receiver's (122) output (124) is applied to a digital system (130), which processes or reconstructs the acoustic signal. The system may include a digital signal processor (300) within the housing (120) for processing the signal (110) prior to transmission. The analog to digital converter may be a delta-sigma oversampling type, or a sub-ranging floating point type, or use adaptive differential pulse code modulation. Power may be derived remotely by transmission over the signal medium.

REFERENCES:
patent: 2801281 (1957-07-01), Oliver et al.
patent: 3723879 (1973-03-01), Kaul et al.
patent: 4370523 (1983-01-01), Bader
patent: 4616349 (1986-10-01), Shirley
patent: 4706261 (1987-11-01), Torre et al.
patent: 4907248 (1990-03-01), Bretl

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