US4162453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duration range determination of incursions by a variable signal
Assignee: United States Steel Corp
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Filing: 1977-07-27
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Granted: 1979-07-24
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Expires: 1997-07-27
Abstract
Abstract A circuit for determining the duration range of each incursion by a variable signal on one side of a selected level uses a comparator with a reference crossing level to develop a squared waveform pulse output. Each pulse is integrated and the value gated to a plurality of comparators. The comparators have inhibit interconnections and reference inputs for the desired ranges.
Inventors
- 👤 Ralph G. Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/02; G01R29/027; G01R29/0273; G01R19/00; G01R19/0038
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
A circuit for determining whether the duration of each incursion by a variable signal on one side of a selected level occurs within a selected range comprising means for generating a squared waveform signal having pulses corresponding to each incursion by the variable signal from the selected level, an integrator circuit connected to the generating means for providing a first intermediate signal indicative of the duration of each pulse resulting from incursions on one side of the selected level, a gating circuit connected to the generating means and the integrator circuit and responsive to the trailing edge of each pulse for providing an intermediate pulse having a magnitude corresponding to the first intermediate signal, and a comparator circuit connected to the gating circuit for providing an output signal when the magnitude of the intermediate pulse exceeds a reference signal input corresponding to one limit of the selected range.
Claim 2
Dependent Claim
148 words
A circuit for determining whether the duration of each incursion by a variable signal on one side of a selected level occurs within a selected range comprising means for generating a squared waveform signal having pulses corresponding to each incursion by the variable signal from the selected level, an integrator circuit connected to the generating means for providing a first intermediate signal indicative of the duration of each pulse resulting from incursions on one side of the selected level, a gating circuit connected to the generating means and the integrator circuit and responsive to the trailing edge of each pulse for providing an intermediate pulse having a magnitude corresponding to the first intermediate signal, and a comparator circuit connected to the gating circuit for providing an output signal when the magnitude of the intermediate pulse exceeds a reference signal input corresponding to one limit of the selected range.
Claim 3
Dependent Claim
79 words
A circuit according to claim 1 in which the comparator circuit includes a plurality of comparators, one for each selected range, with each comparator having a reference signal input corresponding to one limit of its selected range and which includes circuit means connected to all comparators and responsive to a comparator output signal for inhibiting the output of all other comparators having a reference signal input smaller than the reference signal input of the comparator having said output signal.
Claim 4
Dependent Claim
87 words
A circuit according to claim 2 which includes a peak storage circuit connected to the integrator circuit for storing the integrator circuit output and in which the gating circuit includes a first monostable multivibrator connected to the means for generating a squared waveform and responsive to the trailing edge of the squared waveform for generating a sample pulse and an AND gate connected to the monostable multivibrator and the peak storage circuit and responsive to a sample pulse for providing the intermediate pulse to the comparator circuit.
Claim 5
Dependent Claim
46 words
A circuit according to claim 3 which includes a second monostable multivibrator connected to the first monostable multivibrator, the integrator circuit and the peak storage circuit and responsive to the sample pulse for providing a reset pulse to the integrator circuit and the peak storage circuit.
Claim 6
Dependent Claim
25 words
A circuit according to claim 4 in which the means for generating a squared waveform signal is a comparator with a selectable level reference input.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |