Data processing system
Abstract
Abstract THIS CASE DISCLOSES A CONTROL SYSTEM ASSOCIATED TO TWO PROCESSING UNITS OPERATING ON A LOAD-SHARING BASIS AND STORING TEST AND RESTORING PROGRAMMES IN A MEMORY OUTSIDE THESE UNITS. WHEN A PROCESSOR A FAULTY A SERIES OF TEST PROGRAMMES IS PERFORMED IN THIS FAULTY PROCESSOR AND REPEATED AS LONG AS THE PROGRAMME IS NOT SUCCESSFULLY EXECUTED. WHEN A PROCESSOR HAS BEEN TEATED SUCCESSFULLY DATA NECESSARY TO START ITS OPERATION IS COPIED FROM THE OTHER PROCESSOR OR FROM THE MEMORY OF THE CONTROL SYSTEM DEPENDING ON THIS OTHER PROCESSOR CORECTLY OPERATING OR NOT. DURNG THE TEST AND RESTORING OPERATIONS THE FAULTY PROCESSOR INFORMS THE OTHER PROCESSOR OF EACH CHANGE OF STATUS BY MEANS OF FIVE STATUS BISTABLES. WHEN BOTH PROCESSORS ARE FAULTY THEY ARE TESTED ALTERNATELY UNDER THE CONTROL OF A SUPERVISION CIRCUIT.
Inventors
- 👤 Bernard Jean Robert A Fontaine
- 👤 Robert Pierre Emile Fer Salade
- 👤 Desne Jean Rose
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |