US3732405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for statistical time-series analysis of electrical signals
Assignee: National Aeronautics and Space Administration
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Filing: 1971-08-11
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Granted: 1973-05-08
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Expires: 1991-08-11
Abstract
Abstract An apparatus for performing statistical time-series analysis of complex electrical signal waveforms, permitting prompt and accurate determination of statistical characteristics of the signal.
Inventors
- 👤 C Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:25
CPC Classifications
G; G10; G10L; G10L25/00; G10L25/93; G06; G06G; G06G7/00; G06G7/48; G06G7/62; G06G7/623; G10L15/00; G10L15/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
An apparatus for analysis of a complex aperiodic electrical signal, comprising: a. means for sensing the signal; b. means for computing the instantaneous frequency of the signal; c. means for computing the average frequency of the signal; and d. means for generating a statistical moment of the instantaneous frequency of the signal with respect to the average frequency, wherein the signal is analyzed for changes, transitions, and the like.
Claim 2
Independent Claim
69 words
An apparatus for analysis of a complex aperiodic electrical signal, comprising: a. means for sensing the signal; b. means for computing the instantaneous frequency of the signal; c. means for computing the average frequency of the signal; and d. means for generating a statistical moment of the instantaneous frequency of the signal with respect to the average frequency, wherein the signal is analyzed for changes, transitions, and the like.
Claim 3
Dependent Claim
31 words
The structure of claim 1, wherein said means for generating comprises: means for generating a second statistical moment of the instantaneous frequency of the signal with respect to the average frequency.
Claim 4
Dependent Claim
31 words
The structure of claim 1, wherein said means for generating comprises: means for generating a third statistical moment of the instantaneous frequency of the signal with respect to the average frequency.
Claim 5
Dependent Claim
31 words
The structure of claim 1, wherein said means for generating comprises: means for generating a fourth statistical moment of the instantaneous frequency of the signal with respect to the average frequency.
Claim 6
Dependent Claim
52 words
The structure of claim 1 wherein: a. said means for sensing comprises means for sensing signal level transitions of the input signal; and b. said means for computing instantaneous frequency comprises means for forming an output signal whose amplitude indicates the time duration between said signal level transitions of the input signal.
Claim 7
Dependent Claim
34 words
The structure of claim 5 wherein said means for computing average frequency comprises: integrator means for producing a signal indicating the average amplitude of the output signal from said means for computing instantaneous frequency.
Claim 8
Dependent Claim
52 words
The structure of claim 1, wherein said means for generating comprises: a. means for determining the difference between the instantaneous frequency and the avErage frequency of the signal; and b. multiplier means for squaring the output of said means for determining, wherein the second statistical moment of the instantaneous frequency is generated.
Claim 9
Dependent Claim
52 words
The structure of claim 1, wherein said means for generating comprises: a. means for determining the difference between the instantaneous frequency and the average frequency of the signal; and b. multiplier means for cubing the output of said means for determining, wherein the third statistical moment of the instantaneous frequency is generated.
Claim 10
Dependent Claim
52 words
The structure of claim 1, further including: a. means for determining the difference between the instantaneous frequency and the average frequency of the signal; and b. multiplier means for generating the fourth power of the output of said means for determining, wherein the fourth statistical moment of the instantaneous frequency is generated.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |