US3714464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detecting circuit for indicating occurrence of peak in an input signal
Assignee: Ortec Inc
•
Filing: 1970-07-09
•
Granted: 1973-01-30
•
Expires: 1990-07-09
Abstract
Abstract A circuit for processing an input signal incorporating a technique of constant fraction timing on the trailing edge of the input signal. The processing is performed in such a manner that the resultant timing signal is independent of the pulse shape and further incorporates means for adjusting the level at which the timing signal is derived in order to optimized the statistical or rms noise uncertainty and further serves to minimize the time delay from the peak of the input signal.
Inventors
- 👤 R Nutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:52
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/153; H03K5/1532
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
164 words
A circuit for detecting an input signal and producing an output signal to indicate the occurrence of a peak in the input signal, comprising: a comparator having first and second inputs and an output, said first input being responsive to the input signal; a stretcher circuit having an input responsive to the input signal and an output for producing a signal proportional to the peak amplitude of the input signal; and means for applying a predetermined reference voltage to the second input of said comparator while the amplitude of the input signal is less than the reference voltage and for applying the signal produced by said stretcher circuit to the second input of said comparator when the amplitude of the input signal exceeds the reference voltage, the output of said comparator thereafter changing state when the amplitude of the input signal decreases to the amplitude of the signal produced by said stretcher circuit to indicate the occurrence of a peak in the input signal.
Claim 2
Dependent Claim
164 words
A circuit for detecting an input signal and producing an output signal to indicate the occurrence of a peak in the input signal, comprising: a comparator having first and second inputs and an output, said first input being responsive to the input signal; a stretcher circuit having an input responsive to the input signal and an output for producing a signal proportional to the peak amplitude of the input signal; and means for applying a predetermined reference voltage to the second input of said comparator while the amplitude of the input signal is less than the reference voltage and for applying the signal produced by said stretcher circuit to the second input of said comparator when the amplitude of the input signal exceeds the reference voltage, the output of said comparator thereafter changing state when the amplitude of the input signal decreases to the amplitude of the signal produced by said stretcher circuit to indicate the occurrence of a peak in the input signal.
Claim 3
Dependent Claim
164 words
A circuit for detecting an input signal and producing an output signal to indicate the occurrence of a peak in the input signal, comprising: a comparator having first and second inputs and an output, said first input being responsive to the input signal; a stretcher circuit having an input responsive to the input signal and an output for producing a signal proportional to the peak amplitude of the input signal; and means for applying a predetermined reference voltage to the second input of said comparator while the amplitude of the input signal is less than the reference voltage and for applying the signal produced by said stretcher circuit to the second input of said comparator when the amplitude of the input signal exceeds the reference voltage, the output of said comparator thereafter changing state when the amplitude of the input signal decreases to the amplitude of the signal produced by said stretcher circuit to indicate the occurrence of a peak in the input signal.
Claim 4
Dependent Claim
164 words
A circuit for detecting an input signal and producing an output signal to indicate the occurrence of a peak in the input signal, comprising: a comparator having first and second inputs and an output, said first input being responsive to the input signal; a stretcher circuit having an input responsive to the input signal and an output for producing a signal proportional to the peak amplitude of the input signal; and means for applying a predetermined reference voltage to the second input of said comparator while the amplitude of the input signal is less than the reference voltage and for applying the signal produced by said stretcher circuit to the second input of said comparator when the amplitude of the input signal exceeds the reference voltage, the output of said comparator thereafter changing state when the amplitude of the input signal decreases to the amplitude of the signal produced by said stretcher circuit to indicate the occurrence of a peak in the input signal.
Claim 5
Dependent Claim
96 words
The circuit of claim 1, wherein said means comprises: a source for generating a predetermined reference voltage; and a gating circuit having a first input responsive to the output of said comparator, a second input for receiving the predetermined reference voltage from said source, a third input responsive to the output of said stretcher circuit, and an output coupled to the second input of said comparator for selectively applying the predetermined reference voltage and the signal produced by said stretcher circuit to the second input of said comparator in response to signals produced by said comparator.
Claim 6
Dependent Claim
36 words
The circuit of claim 1, which includes: a buffer amplifier having an input responsive to the input signal and an output coupled to the first input of said comparator and the input of said stretcher circuit.
Claim 7
Dependent Claim
36 words
The circuit of claim 1, which includes: a potentiometer coupled to the input of said stretcher circuit and responsive to the input signal for applying a signal proportional to the input signal to said stretcher circuit.
Claim 8
Dependent Claim
83 words
The circuit of claim 1, wherein said stretcher circuit comprises: a first amplifier having an input responsive to the input signal and an output; a second amplifier having an input and an output; a diode having an anode terminal connected to the output of said first amplifier and a cathode terminal connected to the input of said second amplifier; and a capacitance responsive to the cathode terminal of said diode for storing a signal proportional to the peak amplitude of the input signal.
Claim 9
Dependent Claim
48 words
The circuit of claim 5, which includes: a switch connected in parallel with said capacitance and responsive to the output of said comparator for discharging said capacitance when the input signal at the first input of said comparator is less than the signal applied to its second input.
References Cited (Backward Citations)
US2834883A
Cited
US3116458A
Cited
US3292150A
Cited
US3413491A
Cited
US3465169A
Cited
US3553593A
Cited
US3564287A
Cited
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 |