Patent US3252097A successfully refreshed from Google Patents.
US3252097A
Expired / Lapsed
US
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Marginal checking system
Assignee: International Business Machines Corp
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Filing: 1962-10-29
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Granted: 1966-05-17
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Merle E Homan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/22; G06F11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A DATA PROCESSING SYSTEM WHICH EMPLOYS REGULARLY OCCURRING CLOCK PULSES FOR CONTROLLING AND SYNCHRONIZING OPERATION OF A PLURALITY OF FUNCTIONAL UNITS, MEANS FOR PERFORMING MARGINAL SPEED CHECKING IN LESS THAN ALL OF SAID FUNCTIONAL UNITS WITHOUT DESTROYING SYNCHRONISM OF CHECKED UNITS AND UNCHECKED UNITS COMPRISING: MEANS FOR GENERATING A MODIFIED CLOCK PULSE TRAIN IN WHICH THE INTERVALS BETWEEN SOME PULSES ARE DIFFERENT FROM THE INTERVALS BETWEEN OTHER PULSES, AND IN WHICH THE AVERAGE INTERVAL BETWEEN PULSES IS EQUAL TO THE INTERVAL BETWEEN SAID REGULARLY OCCURRING CLOCK PULSES, AND MEANS FOR APPLYING SAID MODIFIED PULSE TRAIN SELECTIVELY TO ANY UNIT OF SAID DATA PROCESSING SYSTEM CONCURRENTLY WITH APPLICATION OF SAID NORMAL CLOCK PULSES TO OTHER UNITS OF SAID SYSTEM.
Claim 2
Dependent Claim
119 words
IN A DATA PROCESSING SYSTEM WHICH EMPLOYS REGULARLY OCCURRING CLOCK PULSES FOR CONTROLLING AND SYNCHRONIZING OPERATION OF A PLURALITY OF FUNCTIONAL UNITS, MEANS FOR PERFORMING MARGINAL SPEED CHECKING IN LESS THAN ALL OF SAID FUNCTIONAL UNITS WITHOUT DESTROYING SYNCHRONISM OF CHECKED UNITS AND UNCHECKED UNITS COMPRISING: MEANS FOR GENERATING A MODIFIED CLOCK PULSE TRAIN IN WHICH THE INTERVALS BETWEEN SOME PULSES ARE DIFFERENT FROM THE INTERVALS BETWEEN OTHER PULSES, AND IN WHICH THE AVERAGE INTERVAL BETWEEN PULSES IS EQUAL TO THE INTERVAL BETWEEN SAID REGULARLY OCCURRING CLOCK PULSES, AND MEANS FOR APPLYING SAID MODIFIED PULSE TRAIN SELECTIVELY TO ANY UNIT OF SAID DATA PROCESSING SYSTEM CONCURRENTLY WITH APPLICATION OF SAID NORMAL CLOCK PULSES TO OTHER UNITS OF SAID SYSTEM.
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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |