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US3714581A
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Fixed memory integrator
Assignee: Honeywell Inc
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Filing: 1969-09-19
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Granted: 1973-01-30
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Expires: 1989-09-19
Abstract
Abstract An integrating circuit which overcomes the effects of spurious noise signals while detecting pulses of a known time duration but occurring at an unknown time. The circuit samples the incoming signal in successive equal time segments, and applies the signal during each segment associated sample to a separate one of a plurality of integrating circuits equal to the number of time segments in pulse. The continuous sum of the signals from all the integrators is level detected to determine the occurrence of a pulse of the predetermined width.
Inventors
- 👤 G Sage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:03
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A method for detecting a signal pulse of known duration and occurring at an unknown time in an incoming signal which may contain noise components having greater amplitude than the signal pulse, said method comprising the steps of: cOntinuously sampling the input signal; storing a number of successive samples just sufficient to cover a time interval equal to the duration of the signal pulse; summing signals indicative of all of the stored samples; sensing the level of the summation signal to detect a level indicative of the signal pulse; and replacing the oldest stored sample with the next successive unstored sample at time intervals equal to the length of one of said samples.
Claim 2
Independent Claim
113 words
A method for detecting a signal pulse of known duration and occurring at an unknown time in an incoming signal which may contain noise components having greater amplitude than the signal pulse, said method comprising the steps of: cOntinuously sampling the input signal; storing a number of successive samples just sufficient to cover a time interval equal to the duration of the signal pulse; summing signals indicative of all of the stored samples; sensing the level of the summation signal to detect a level indicative of the signal pulse; and replacing the oldest stored sample with the next successive unstored sample at time intervals equal to the length of one of said samples.
Claim 3
Independent Claim
113 words
A method for detecting a signal pulse of known duration and occurring at an unknown time in an incoming signal which may contain noise components having greater amplitude than the signal pulse, said method comprising the steps of: cOntinuously sampling the input signal; storing a number of successive samples just sufficient to cover a time interval equal to the duration of the signal pulse; summing signals indicative of all of the stored samples; sensing the level of the summation signal to detect a level indicative of the signal pulse; and replacing the oldest stored sample with the next successive unstored sample at time intervals equal to the length of one of said samples.
Claim 4
Independent Claim
113 words
A method for detecting a signal pulse of known duration and occurring at an unknown time in an incoming signal which may contain noise components having greater amplitude than the signal pulse, said method comprising the steps of: cOntinuously sampling the input signal; storing a number of successive samples just sufficient to cover a time interval equal to the duration of the signal pulse; summing signals indicative of all of the stored samples; sensing the level of the summation signal to detect a level indicative of the signal pulse; and replacing the oldest stored sample with the next successive unstored sample at time intervals equal to the length of one of said samples.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |