Patent US5447509A successfully refreshed from Google Patents.
US3334334A
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US
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Signal change detector for process control computer
Assignee: General Electric Co
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Filing: 1963-07-26
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Granted: 1967-08-01
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Expires: 1983-07-26
Abstract
No abstract record available.
Inventors
- 👤 George N Halpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:59
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/408; G05B19/4083; G05B2219/00; G05B2219/30; G05B2219/50; G05B2219/50124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A PROCESS CONTROL COMPUTER SYSTEM WHEREIN THE MAIN PROGRAM MAY BE INTERRUPTED BY A SUBPROGRAM IN RESPONSE TO AN INTERRUPT SIGNAL, THE COMBINATION COMPRISING: SIGNAL SOURCE MEANS FOR PROVIDING AN OUTPUT SIGNAL WHICH CHANGES BETWEEN FIRST AND SECOND STATES IN RESPONSE TO CORRESPONDING PREDETERMINED CHANGES IN A SELECTED PARAMETER OF THE PROCESS BEING CONTROLLED BY SAID COMPUTER SYSTEM, CHANGE DETECTION MEANS CONNECTED TO SAID SIGNAL SOURCE MEANS FOR GENERATING AN INTERRUPT SIGNAL IN RESPONSE TO EITHER CHANGE IN STATE OF THE OUTPUT SIGNAL OF SAID SIGNAL SOURCE MEANS, AND MEANS RESPONSIVE TO THE INTERRUPT SIGNAL GENERATED BY SAID CHANGE DETECTION MEANS FOR CAUSING INTERRUPTION OF THE MAIN PROGRAM AND PREFORMANCE OF AN APPROPRIATE SUBPROGRAM IN THE PROCESS CONTROL COMPUTER SYSTEM.
Claim 2
Dependent Claim
121 words
IN A PROCESS CONTROL COMPUTER SYSTEM WHEREIN THE MAIN PROGRAM MAY BE INTERRUPTED BY A SUBPROGRAM IN RESPONSE TO AN INTERRUPT SIGNAL, THE COMBINATION COMPRISING: SIGNAL SOURCE MEANS FOR PROVIDING AN OUTPUT SIGNAL WHICH CHANGES BETWEEN FIRST AND SECOND STATES IN RESPONSE TO CORRESPONDING PREDETERMINED CHANGES IN A SELECTED PARAMETER OF THE PROCESS BEING CONTROLLED BY SAID COMPUTER SYSTEM, CHANGE DETECTION MEANS CONNECTED TO SAID SIGNAL SOURCE MEANS FOR GENERATING AN INTERRUPT SIGNAL IN RESPONSE TO EITHER CHANGE IN STATE OF THE OUTPUT SIGNAL OF SAID SIGNAL SOURCE MEANS, AND MEANS RESPONSIVE TO THE INTERRUPT SIGNAL GENERATED BY SAID CHANGE DETECTION MEANS FOR CAUSING INTERRUPTION OF THE MAIN PROGRAM AND PREFORMANCE OF AN APPROPRIATE SUBPROGRAM IN THE PROCESS CONTROL COMPUTER SYSTEM.
References Cited (Backward Citations)
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US3222647A
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |