US3657646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of automatic estimation of nonregular curves, especially electromiographic curves and the digital system for realization of the method
Assignee: Polish Academy of Sciences
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Filing: 1969-12-18
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Granted: 1972-04-18
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Expires: 1989-12-18
Abstract
Abstract A method and apparatus for analyzing an irregular signal and providing a digital read-out in which the signal is applied to four processing channels. In a first channel, a coefficient of interference is obtained by counting transitions of the signal through several values, multiplying the sum of the transitions. In a second channel for obtaining mean peak value, the signal is rectified, supplied to a comparator also fed with a constant amplitude saw tooth wave and the time interval obtained between the initiation of the saw tooth wave and the instant when the saw tooth wave potential is equaled by a potential representing the signal intensity. In a third channel, a duty factor is obtained by dividing the signal after it has been integrated by its mean peak value. In a fourth channel the number of groups of impulses in the signal is determined.
Inventors
- 👤 Wojciech Zmyslowski
- 👤 Zofia Decowska
- 👤 Ryszard Gawronski
- 👤 Zdzislawa Borejko
- 👤 Marek Decowski
- 👤 Janusz Wirski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/389; A61B5/397; A61B5/72; A61B5/7235; A61B5/7242
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
Apparatus for analyzing an input signal comprising: means for counting the number of times the amplitude of said signal traverses each of a plurality of amplitude values, means for multiplying the sums thus obtained, means for comparing the resulting signal with a saw tooth wave, means for decoding said signal, and means for displaying said decoded signal.
Claim 2
Dependent Claim
57 words
Apparatus for analyzing an input signal comprising: means for counting the number of times the amplitude of said signal traverses each of a plurality of amplitude values, means for multiplying the sums thus obtained, means for comparing the resulting signal with a saw tooth wave, means for decoding said signal, and means for displaying said decoded signal.
Claim 3
Dependent Claim
21 words
Apparatus as set forth in claim 1, and further comprising means for determining the mean peak value of said input signal.
Claim 4
Dependent Claim
72 words
Apparatus as set forth in claim 2, said last mentioned means comprising means for rectifying said input signal, means for comparing a potential proportional to said rectified signal with a saw tooth wave, means for measuring the time interval between initiation of said saw tooth wave and the time of equalization of said rectified input signal potential and saw tooth wave potential, and means for displaying a value proportional to said interval.
Claim 5
Dependent Claim
67 words
Apparatus as set forth in claim 3, and further comprising saw tooth wave generating means, means for applying a signal proportional to the mean peak value of said rectified input signal to said saw tooth wave generating means to provide a modulated saw tooth wave, means for comparing said integrated signal with said modulated saw tooth wave, and means for counting, decoding and diSplaying said compared signal.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 4, and further comprising means for counting the number of groups of input signal reversals, and means for displaying the sum thereof.
Claim 7
Dependent Claim
26 words
Apparatus according to claim 1, and further comprising means for counting the number of groups of input signal reversals, and means for displaying the sum thereof.
Claim 8
Independent Claim
77 words
A method of analyzing a signal comprising: a. counting the number of times the amplitude of the signal traverses each of a plurality of amplitude values, b. determining the mean peak value of said signal, c. integrating said signal and comparing the integrated signal with a saw tooth wave modulated by a signal mean peak value, d. counting the number of groups of reversals of said input signal, and e. digitally displaying each of the said values.
Claim 9
Independent Claim
77 words
A method of analyzing a signal comprising: a. counting the number of times the amplitude of the signal traverses each of a plurality of amplitude values, b. determining the mean peak value of said signal, c. integrating said signal and comparing the integrated signal with a saw tooth wave modulated by a signal mean peak value, d. counting the number of groups of reversals of said input signal, and e. digitally displaying each of the said values.
References Cited (Backward Citations)
US3348031A
Cited
US3422349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |