US3566368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delta clock and interrupt logic
Assignee: United States Department of the Army
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Filing: 1969-04-22
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Granted: 1971-02-23
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Expires: 1989-04-22
Abstract
Abstract A DELTA CLOCK SYSTEM IS PROVIDED TO INDICATE IF A PARTICUALR TASK HAS EXCEEDED A PREDETERMINED TIME LIMIT. HOWEVER, THE CLOCK SYSTEM CONTAINS ADDITIONAL RESTART TIME WHICH WILL BE USED THE FIRST TIME THE CLOCK RUNS OUT. AT THIS TIME A SOFT INTERRUPT REQUEST IS GENERATED. THE SECOND TIME THE CLOCK RUNS OUT A HARD INTERRUPT REQUEST WILL OCCUR, AND IF THERE IS ERROR LOCKOUT SIGNAL PRESENT, A STOP SIGNAL WILL BE SENT. IF THERE IS NO LOCKOUT SIGNAL, THE ADDITIONAL TIME IS PROVIDED ONCE AGAIN, AND IF THE PROGRAM DOES NOT RESET THE CLOCK OR THE INTERRUPT ROUTINE IS NOT COMPLETE, A STOP SIGNAL WILL BE GENERATED AT THE END OF THE SECOND ADDITIONAL TIME.
Inventors
- 👤 Melvin J De Blauw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/48; G06F9/4806; G06F9/4812; G06F9/4825; G06F11/00; G06F11/07; G06F11/0703; G06F11/0751; G06F11/0754; G06F11/0757; G06F9/4831; G06F9/4837
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 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 |