Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1987-12-07
1988-08-30
Shoop, Jr., William M.
Communications: electrical
Audible indication
Percussion-type sound producer
340347NT, H03M 112
Patent
active
047680180
ABSTRACT:
An oversampled delta-sigma analog to digital converter is used in conjuction with bias resistive means and a single bit digital to analog converter in a feedback loop to permit the utilization of the converter in a system in which the converter elements are supplied with power from the same source which supplies the analog input signal to the converter. Accordingly, a minimum number of on-chip circuit components are provided to extend the operational utility of delta-sigma converter/modulation devices and particularly to permit their utilization in electronic circuit breaker chips and devices.
REFERENCES:
patent: 4542354 (1985-09-01), Robinton et al.
patent: 4573037 (1986-02-01), Robinton et al.
Candy, James C., "A Use of Limit Cycle Oscillations to Obtain Robust Analog-to-Digital Converters", IEEE Trans, on Comm. vol. COM-22, No. 3; p.298.
Inose, Hiroshi et al, "A Unity Bit Coding Method by Negative Feedback", Proceedings of the IEEE, Nov. 1963, pp. 1524-1535.
Brainard, Ralph C. et al "Direct-Feedback Coders: Design and Performance with Television Signals"; Proc. of the IEEE May 1969, pp. 776-786.
Blum Richard K.
Cutter Lawrence D.
Davis Jr. James C.
General Electric Company
Shoop Jr. William M.
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