US3831098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse stretcher for narrow pulses
Assignee: Individual
•
Filing: 1973-06-25
•
Granted: 1974-08-20
•
Expires: 1993-06-25
Abstract
Abstract A pulse stretcher for narrow pulses comprising an analog section for processing each arriving analog pulse and a digital section having logic for providing command signals to the gates and switches in the analog section.
Inventors
- 👤 R Lindsey
- 👤 J Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:55
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
A pulse stretcher for very narrow pulses comprising an analog section for processing each arriving analog pulse and a digital section responsive to the analog signals for providing command signals to the analog section, said analog section comprising a delay network for delaying the incoming signal; an input gate coupled to the delay network and being responsive to an ingate command signal from said digital section; a holding circuit coupled to said input gate and being responsive to a dump command signal from said digital section; and an output gate coupled to said holding circuit and being responsive to an outgate command signal from said digital section for providing a delayed and stretched output signal; said digital section comprising at least one detector having a predetermined threshold level for detecting the level of each arriving pulse relative to said threshold level; a signal conditioner coupled to said one level detector for conditioning the detected signals; a timer for providing said ingate, dump, and outgate signals to said analog section, and a first gate for gating the output of said signal conditioner to said timer.
Claim 2
Dependent Claim
184 words
A pulse stretcher for very narrow pulses comprising an analog section for processing each arriving analog pulse and a digital section responsive to the analog signals for providing command signals to the analog section, said analog section comprising a delay network for delaying the incoming signal; an input gate coupled to the delay network and being responsive to an ingate command signal from said digital section; a holding circuit coupled to said input gate and being responsive to a dump command signal from said digital section; and an output gate coupled to said holding circuit and being responsive to an outgate command signal from said digital section for providing a delayed and stretched output signal; said digital section comprising at least one detector having a predetermined threshold level for detecting the level of each arriving pulse relative to said threshold level; a signal conditioner coupled to said one level detector for conditioning the detected signals; a timer for providing said ingate, dump, and outgate signals to said analog section, and a first gate for gating the output of said signal conditioner to said timer.
Claim 3
Dependent Claim
26 words
The pulse stretcher of claim 1 wherein said signal conditioner in said analog section comprises an input buffer and an amplifier coupled to the input buffer.
Claim 4
Dependent Claim
19 words
The system of claim 1 wherein said output gate in said analog section is followed by an output buffer.
Claim 5
Dependent Claim
49 words
The system of claim 1 wherein said digital section includes another level detector, said one level detector being a positive level detector and said other level detector being a negative level detector, and said signal conditioner in said digital section receiving the outputs from both of said level detectors.
Claim 6
Dependent Claim
18 words
The system of claim 4 wherein said timer in said digital section includes a plurality of one-shot multivibrators.
Claim 7
Dependent Claim
23 words
The system of claim 5 and further including at least another gate for gating the output of at least some of said multivibrators.
Claim 8
Dependent Claim
67 words
The system of claim 6 wherein said signal conditioner in said digital section includes, an inverter for inverting the output of said negative level detector, and a one-shot multivibrator responsive to the output of said inverter and the output of said positive level detector to provide an output to said first gate in said digital section thereby initiating the operation of said timer in said digital section.
References Cited (Backward Citations)
US3602825A
Cited
US3659211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |