US3777262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse amplitude variation detector
Assignee: Northrop Grumman Corp
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Filing: 1971-06-07
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Granted: 1973-12-04
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Expires: 1991-06-07
Abstract
Abstract A long term hold circuit accepts a train of input pulses having amplitude variation ''''jitter'''' thereon, and feeds simultaneously into an averager and an AC amplifier, the AC amplifier feeding simultaneously into another averager and a peak-to-peak detector.
Inventors
- 👤 R Vahlstrom
- 👤 D Nutten
- 👤 D Bayne
- 👤 S Oster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
A pulse amplitude variation detector for receiving a train of input pulses, comprising: a long duration hold circuit for holding the amplitude of an input pulse thereto with negligible decay, automatic reset means connected to the train of input pulses and to said long duration hold circuit for resetting said hold circuit with each input pulse to the magnitude of each said input pulse, first means connected to the output of said hold circuit for indicating the average AC amplitude variation component on said input pulses, and second means connected to said hold circuit output for indicating the peak-to-peak value of amplitude variation component of said pulses.
Claim 2
Dependent Claim
107 words
A pulse amplitude variation detector for receiving a train of input pulses, comprising: a long duration hold circuit for holding the amplitude of an input pulse thereto with negligible decay, automatic reset means connected to the train of input pulses and to said long duration hold circuit for resetting said hold circuit with each input pulse to the magnitude of each said input pulse, first means connected to the output of said hold circuit for indicating the average AC amplitude variation component on said input pulses, and second means connected to said hold circuit output for indicating the peak-to-peak value of amplitude variation component of said pulses.
Claim 3
Dependent Claim
32 words
Apparatus in accordance with claim 1 wherein said first means comprises an AC amplifier capacitively connected to said hold circuit output, and a rectifier connected to the output of said AC amplifier.
Claim 4
Dependent Claim
33 words
Apparatus in accordance with claim 1 wherein said first means comprises an AC amplifier AC-coupled to said hold circuit output, and a rectifier and averager connected to the output of said AC amplifier.
Claim 5
Dependent Claim
33 words
Apparatus in accordance with claim 1 wherein said second means comprises an AC amplifier capacitively connected to said hold circuit output, and a peak-to-peak detector connected to the output of said AC amplifier.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |