Patent US3565057A successfully refreshed from Google Patents.
US3565057A
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Signal analyzing apparatus for an ultrasonic scanning system
Assignee: HP Inc
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Filing: 1968-12-06
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Granted: 1971-02-23
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Expires: 1988-12-06
Abstract
Abstract Ultrasonic scanning apparatus for analyzing a group of echo signals occurring over a period of time to provide an output signal related to the time location of the echo signal of relatively greatest amplitude within the period is disclosed. The group of echo signals are supplied to a peak detector and differentiator circuit which supplies an intermediate signal to reset an integrator whenever the amplitude of any echo signal exceeds the amplitude of all previous echoes within the period. The amplitude of the signal stored on the integrator at the end of the period is thus proportional to the time between the echo signal of greatest amplitude and the end of the period.
Inventors
- 👤 John T Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
A; A61; A61B; A61B8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
Apparatus for providing an output signal related to the time of occurrence of an impulse signal of greatest amplitude within a group of successive impulse signals occurring over a selected period of time, said apparatus comprising: input means capable of receiving a group of impulse signals occurring within a selected period of time; means responsive to said impulse signals for producing a threshold level proportional to the amplitude of the first impulse signal occurring within said selected period of time and for increasing said threshold level in response to each impulse signal occurring within said selected period of time having an amplitude greater than the established threshold level; intermediate signal means for producing an intermediate signal in response to the establishment of each threshold level occurring within said selected period of time; a source of signal; integrator means connected to said signal source and responsive to said intermediate signals to integrate the signal from said source; and switching means connected to said integrator means for resetting said integrator means to a reference level and for initiating a new integration period in response to each of said intermediate signals to produce an output signal from said integrator means having an amplitude related to the time intervals between the occurrence of the last intermediate signal and the end of said selected period of time.
Claim 2
Dependent Claim
222 words
Apparatus for providing an output signal related to the time of occurrence of an impulse signal of greatest amplitude within a group of successive impulse signals occurring over a selected period of time, said apparatus comprising: input means capable of receiving a group of impulse signals occurring within a selected period of time; means responsive to said impulse signals for producing a threshold level proportional to the amplitude of the first impulse signal occurring within said selected period of time and for increasing said threshold level in response to each impulse signal occurring within said selected period of time having an amplitude greater than the established threshold level; intermediate signal means for producing an intermediate signal in response to the establishment of each threshold level occurring within said selected period of time; a source of signal; integrator means connected to said signal source and responsive to said intermediate signals to integrate the signal from said source; and switching means connected to said integrator means for resetting said integrator means to a reference level and for initiating a new integration period in response to each of said intermediate signals to produce an output signal from said integrator means having an amplitude related to the time intervals between the occurrence of the last intermediate signal and the end of said selected period of time.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |