US3671866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse processing circuit having improved range resolution
Assignee: Collins Radio Co
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Filing: 1971-01-08
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Granted: 1972-06-20
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Expires: 1991-01-08
Abstract
Abstract A pulse processing circuitry which substantially eliminates pulse position variations caused by compression of pulses in IF stages of video receivers as a result of conflicting requirements for narrow bandwidth and large dynamic range. The variations are eliminated while retaining the pulse width characteristics of a pulse train by splitting the input pulse into two signal channels, delaying the pulse in one channel for a predetermined interval, applying the delayed pulse to trigger a ramp generator, and comparing the resulting ramp signal with a reference level signal produced by the pulse in the second channel.
Inventors
- 👤 Kenneth R Rutherford
- 👤 Marvin L Hooker Jr
- 👤 Joseph P Alibrandi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:04
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/103; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
215 words
Pulse processing circuitry comprising: input means for receiving pulses to be processed and for applying said pulses simultaneously to two separate signal channels, delay means connected in one of said signal channels and serving to provide a predetermined time delay for the pulses in said one of said signal channels, a reference level generator connected to receive the pulses in the second of said signal channels and emitting a reference signal having a maximum amplitude which is less than the amplitude of the pulses applied thereto by a predetermined value, a threshold detector connected to receive the delayed pulses from said delay means and the reference signal from said reference level generator and operative to pass a triggering signal whenever and for as long as the amplitude of said delayed pulse exceeds the amplitude of said reference signal, a ramp generator connected to receive said triggering signal from said threshold detector and responsive thereto to generate a ramp signal beginning at the start of said triggering signal and terminating at the end of said triggering signal, and ramp comparator means connected to receive said ramp signal and said reference signal and operative to emit an output pulse whenever and for as long as the amplitude of said ramp signal exceeds that of said reference signal.
Claim 2
Dependent Claim
215 words
Pulse processing circuitry comprising: input means for receiving pulses to be processed and for applying said pulses simultaneously to two separate signal channels, delay means connected in one of said signal channels and serving to provide a predetermined time delay for the pulses in said one of said signal channels, a reference level generator connected to receive the pulses in the second of said signal channels and emitting a reference signal having a maximum amplitude which is less than the amplitude of the pulses applied thereto by a predetermined value, a threshold detector connected to receive the delayed pulses from said delay means and the reference signal from said reference level generator and operative to pass a triggering signal whenever and for as long as the amplitude of said delayed pulse exceeds the amplitude of said reference signal, a ramp generator connected to receive said triggering signal from said threshold detector and responsive thereto to generate a ramp signal beginning at the start of said triggering signal and terminating at the end of said triggering signal, and ramp comparator means connected to receive said ramp signal and said reference signal and operative to emit an output pulse whenever and for as long as the amplitude of said ramp signal exceeds that of said reference signal.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein said reference level generator comprises: a peak charging circuit, and a peak clipping circuit.
Claim 4
Independent Claim
129 words
The method of pulse processing comprising the steps of: splitting an input pulse into two signal channels, delaying the pulse in one of said signal channels, generating a reference signal having an amplitude which is a predetermined proportion of the amplitude of said pulse, comparing the amplitude of said pulse with the amplitude of said reference signal, triggering a ramp signal when the amplitude of said pulse rises above that of said reference level, terminating said ramp signal when the amplitude of said pulse falls below that of said reference level, comparing the amplitude of said ramp signal with the amplitude of said reference signal, and emitting an output signal whenever and for as long as the amplitude of said ramp signal exceeds the amplitude of said reference signal.
Claim 5
Independent Claim
129 words
The method of pulse processing comprising the steps of: splitting an input pulse into two signal channels, delaying the pulse in one of said signal channels, generating a reference signal having an amplitude which is a predetermined proportion of the amplitude of said pulse, comparing the amplitude of said pulse with the amplitude of said reference signal, triggering a ramp signal when the amplitude of said pulse rises above that of said reference level, terminating said ramp signal when the amplitude of said pulse falls below that of said reference level, comparing the amplitude of said ramp signal with the amplitude of said reference signal, and emitting an output signal whenever and for as long as the amplitude of said ramp signal exceeds the amplitude of said reference signal.
References Cited (Backward Citations)
US3075149A
Cited
US3509279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |