Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-06-29
1981-04-14
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307351, 307354, 328114, H03K 5153
Patent
active
042622573
ABSTRACT:
A peak detecting network utilizes a passive integrating filter to translate the peaks of an input signal into zero crossings of a translation signal, while providing a high degree of noise rejection and preventing the build-up of a DC component in the translation signal. The peak detecting network includes a sine pulse-forming filter comprised of a parallel cascade of a DC shunt inductor, a plurality of series LC sections, and a terminating capacitor. The series LC sections are characterized by respective transfer functions whose impulse responses are substantially finite time duration sine pulses of a successive number of cycles. A rectifier network applies a rectified input signal to the sine pulse-forming filter. A buffer network taps the response of the LC section associated with a one-cycle sine pulse impulse response. The resulting translation signal has a positive-going zero crossing corresponding in time to the occurrence of a peak of the rectified input signal. A positive-going zero crossing detector then detects the sequence of positive-going zero crossings of the translation signal in order to retrieve the sequence of the peaks of the input signal.
REFERENCES:
patent: 3281806 (1966-10-01), Lawrance et al.
patent: 3304542 (1967-02-01), Sutton et al.
patent: 3373415 (1968-03-01), Gabor
patent: 3864583 (1975-02-01), Fiorino
patent: 4112381 (1978-09-01), Mortensen et al.
P. T. Marino, Data Demodulation Employing Integration Techniques, IBM Technical Disclosure Bulletin, vol. 17, No. 2, Jul. 1974, p. 453.
B. C. Fiorino, Detection of Digital Data Using Integration Techniques, IBM Technical Disclosure Bulletin, vol. 16, No. 7, Dec. 1973, pp. 2416-2417.
S. Av et al., Data Detection Circuit, IBM Technical Disclosure Bulletin, vol. 18, No. 11, Apr. 1976, pp. 3821-3822.
Datapoint Corporation
Zazworsky John
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