Patent US3610894A successfully refreshed from Google Patents.
US3610894A
Expired / Lapsed
US
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Peak analysis systems
Assignee: British Railways Board
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Filing: 1970-04-08
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Granted: 1971-10-05
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Expires: 1990-04-08
Abstract
Abstract A peak analysis system for analyzing the peaks and troughs of a variable comprising an analog-to-digital converter for producing a train of impulses, each impulse digitally representing a predetermined incremental variation of the variable, a digital counting system for counting the impulses from the converter and a resetting circuit for resetting the counting system in response to a reversal of trend in the variable, and recording means responsive to the count made by the counting system between successive resetting operations for recording a digital value related to the count.
Inventors
- 👤 Geoffrey Stuart Drury
- 👤 Norman Jamieson Macleod
- 👤 Jack Allenby
- 👤 Gregory Charles Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:39
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/153; H03M; H03M1/00; H03M1/12; H03M1/60
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
A system for analyzing an analog signal having random variations in amplitude by providing an output manifestation which is representative of the variation in amplitude of said signal between an instantaneous peak or instantaneous trough in the signal amplitude and the next-occurring such trough or peak respectively, the system comprising in combination, an analog-to-digital converter responsive to the variations in amplitude of said signal for producing a train of pulses with each additional pulse representing a predetermined incrementaL variation in amplitude only of said signal, digital counting means for counting the pulses produced by said converter, means for detecting each instantaneous trough in said signal when said signal changes from decreasing amplitude to increasing amplitude and also each instantaneous peak when said signal changes from increasing amplitude to decreasing amplitude, resetting means controlled by said detecting means for resetting said counting means in response both to the detection of said instantaneous trough and also said instantaneous peak, and output means for providing said output manifestation dependent upon the count attained by said counting means at the time of each counter resetting operation.
Claim 2
Independent Claim
182 words
A system for analyzing an analog signal having random variations in amplitude by providing an output manifestation which is representative of the variation in amplitude of said signal between an instantaneous peak or instantaneous trough in the signal amplitude and the next-occurring such trough or peak respectively, the system comprising in combination, an analog-to-digital converter responsive to the variations in amplitude of said signal for producing a train of pulses with each additional pulse representing a predetermined incrementaL variation in amplitude only of said signal, digital counting means for counting the pulses produced by said converter, means for detecting each instantaneous trough in said signal when said signal changes from decreasing amplitude to increasing amplitude and also each instantaneous peak when said signal changes from increasing amplitude to decreasing amplitude, resetting means controlled by said detecting means for resetting said counting means in response both to the detection of said instantaneous trough and also said instantaneous peak, and output means for providing said output manifestation dependent upon the count attained by said counting means at the time of each counter resetting operation.
Claim 3
Dependent Claim
81 words
The system of claim 1 which further includes means distinctively operated in response to the attainment by said counting means of a predetermined minimum number of said pulses subsequent to the detection of an instantaneous trough or instantaneous peak by said detecting means, said further means when distinctively operated being effective to operate said output means to record a digital value relating to the count by said counting means achieved at the preceding detection of an instantaneous peak or instantaneous trough.
Claim 4
Dependent Claim
33 words
The system of claim 1 in which said resetting means includes a plurality of output-responsive means a selected one of which is operated in accordance with the count attained by said counting means.
Claim 5
Dependent Claim
45 words
The system of claim 3 which further includes a source of clock pulses, said output means being governed jointly by said plurality of output-responsive means and by said clock pulse source for producing a digital signal related to the count attained by said counting means.
Claim 6
Dependent Claim
147 words
The system of claim 2 in which said counting means comprises a first counter and at least one further serially connected counter, means for transmitting a pulse from said first counter to said further counter for counting by said further counter after a predetermined number of said first-mentioned pulses have been counted by said first counter, a gate for controlling the transmission of pulses from said first counter to said further counter, said detecting means upon detecting an instantaneous peak or instantaneous trough causing closure of said gate and the resetting of said first counter and the subsequent operation of said further means being effective to operate said recording means to record a digital value related to the count on said further counter, and said resetting circuit causing resetting of said further counter and opening of said gate after the operation of said recording means is completed.
Claim 7
Dependent Claim
44 words
The system of claim 5 which also includes means responsive to the detection of an instantaneous trough or instantaneous peak by said detecting means prior to the operation of said further means and effective thereupon to reopen said gate without resetting said further counter.
Claim 8
Dependent Claim
102 words
The system of claim 2 in which said counting means comprises first and second counters, gate control means for controlling the application of said pulses from said first counter to said second counter, said detecting means upon detecting an instantaneous peak or an instantaneous trough acting upon said gate control means to disable said second counter, and means responsive to the attainment of a predetermined count by said first counter subsequent to the detection of an instantaneous peak or an instantaneous trough by said detecting means for rendering effective said control means to produce said output and to reset said counting means.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |