Patent US3343141A successfully refreshed from Google Patents.
US3343141A
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Bypassing of processor sequence controls for diagnostic tests
Assignee: International Business Machines Corp
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Filing: 1964-12-23
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Granted: 1967-09-19
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Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Frank J Hackl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
G; G11; G11C; G11C29/00; G11C29/04; G11C29/08; G11C29/12; G11C29/38; G06; G06F; G06F11/00; G06F11/22; G06F11/26; G06F11/267; G06F9/00; G06F9/06; G06F9/22; G06F9/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A DATA PROCESSING SYSTEM INCLUDING A FIRST INTERNAL SOURCE OF MICROPROGRAM SEQUENCE CONTROL SIGNALS OPERATING AT A FIRST CHARACTERISTIC CYCLIC RATE AND A SECOND INTERNAL SOURCE OF PROGRAM COMMAND AND INTELLIGENCE SIGNALS CYCLING AT A SECOND CHARACTERISTIC CYCLIC RATE DIFFERENT FROM SAID FIRST RATE, AN INTERNAL TEST SUB-SYSTEM COMPRISING: COMPARATOR MEANS: MEANS FOR SUPPLYING TO SAID COMPARATOR MEANS TEST SIGNALS DERIVED FROM COMPONENTS WITHIN SAID DATA PROCESSING SYSTEM; MEANS COUPLED TO SAID SECOND SOURCE FOR SUPPLYING REFERENCE SIGNALS FOR COMPARISON TO SAID TEST SIGNALS; AND MEANS OPERABLE IN ALTERNATE MODES OF OPERATION THEREOF TO CONTROL THE OPERATION OF SAID COMPARATOR MEANS AND SIGNAL SUPPLYING MEANS BY MEANS OF CONTROL SIGNALS OBTAINED ALTERNATELY FROM SAID FIRST AND SECOND SOURCES AT SAID RESPECTIVE FIRST AND SECOND CYCLIC RATES.
Claim 2
Dependent Claim
127 words
IN A DATA PROCESSING SYSTEM INCLUDING A FIRST INTERNAL SOURCE OF MICROPROGRAM SEQUENCE CONTROL SIGNALS OPERATING AT A FIRST CHARACTERISTIC CYCLIC RATE AND A SECOND INTERNAL SOURCE OF PROGRAM COMMAND AND INTELLIGENCE SIGNALS CYCLING AT A SECOND CHARACTERISTIC CYCLIC RATE DIFFERENT FROM SAID FIRST RATE, AN INTERNAL TEST SUB-SYSTEM COMPRISING: COMPARATOR MEANS: MEANS FOR SUPPLYING TO SAID COMPARATOR MEANS TEST SIGNALS DERIVED FROM COMPONENTS WITHIN SAID DATA PROCESSING SYSTEM; MEANS COUPLED TO SAID SECOND SOURCE FOR SUPPLYING REFERENCE SIGNALS FOR COMPARISON TO SAID TEST SIGNALS; AND MEANS OPERABLE IN ALTERNATE MODES OF OPERATION THEREOF TO CONTROL THE OPERATION OF SAID COMPARATOR MEANS AND SIGNAL SUPPLYING MEANS BY MEANS OF CONTROL SIGNALS OBTAINED ALTERNATELY FROM SAID FIRST AND SECOND SOURCES AT SAID RESPECTIVE FIRST AND SECOND CYCLIC RATES.
References Cited (Backward Citations)
US3049693A
Cited
US3248708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |