US3237157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting and localizing malfunctions in electronic devices
Assignee: International Business Machines Corp
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Filing: 1960-12-30
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Granted: 1966-02-22
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Leonard C Higby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:07
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/22; G06F11/26; G06F11/273; G06F7/00; G06F7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A SYSTEM FOR LOCALIZING INOPERABILITY IN A DEVICE CONSISTING OF A PLURALITY OF ELECTRICAL BISTABLE ELEMENTS HAVING INDIVIDUAL INPUTS TO WHICH INFORMATION REPRESENTING SIGNALS MAY BE APPLIED FOR SETTING THE ELEMENTS TO FIRST OR SECOND BINARY INFORMATION REPRESENTING STATES, EACH SAID ELEMENT HAVING TRUE AND COMPLEMENT OUTPUTS OPERABLE TO SUPPLY OUTPUT SIGNALS REPRESENTING RESPECTIVELY THE BINARY INFORMATION STATE TO WHICH THE ELEMENT IS SET AND THE BINARY COMPLEMENT OF THAT STATE, COMPRISING: SIGNAL GENERATING MEANS FOR PROVIDING TEST SIGNALS INCLUDING AT LEAST ONE INQUIRY WORD HAVING A NUMBER OF BITS EQUAL TO THE NUMBER OF ELEMENTS IN THE DEVICE AND A RESPONSE WORD WHICH IS THE BINARY COMPLEMENT OF THE CORRESPONDING INQUIRY WORD; MEANS FOR CONNECTING THE SIGNAL GENERATING MEANS TO THE INPUTS OF SAID DEVICE; REGISTER MEANS CONNECTED TO RECEIVE THE SIGNALS PROVIDED BY THE COMPLEMENT OUTPUTS OF THE ELEMENTS AND TO PROVIDE OUTPUT SIGNALS WHICH ARE THE BINARY EQUIVALENT THEREOF; AND BIT-FOR-BIT COMPARING AND INDICATING MEANS OPERABLY CONNECTED TO THE TRUE OUTPUTS OF THE ELEMENTS OF THE DEVICE AND THE OUTPUTS OF THE REGISTER MEANS FOR COMPARING CORRESPONDING POSITIONS OF THE SAID TWO OUTPUTS AND INDICATING THOSE POSITIONS HAVING DIFFERING BINARY STATES.
Claim 2
Independent Claim
194 words
A SYSTEM FOR LOCALIZING INOPERABILITY IN A DEVICE CONSISTING OF A PLURALITY OF ELECTRICAL BISTABLE ELEMENTS HAVING INDIVIDUAL INPUTS TO WHICH INFORMATION REPRESENTING SIGNALS MAY BE APPLIED FOR SETTING THE ELEMENTS TO FIRST OR SECOND BINARY INFORMATION REPRESENTING STATES, EACH SAID ELEMENT HAVING TRUE AND COMPLEMENT OUTPUTS OPERABLE TO SUPPLY OUTPUT SIGNALS REPRESENTING RESPECTIVELY THE BINARY INFORMATION STATE TO WHICH THE ELEMENT IS SET AND THE BINARY COMPLEMENT OF THAT STATE, COMPRISING: SIGNAL GENERATING MEANS FOR PROVIDING TEST SIGNALS INCLUDING AT LEAST ONE INQUIRY WORD HAVING A NUMBER OF BITS EQUAL TO THE NUMBER OF ELEMENTS IN THE DEVICE AND A RESPONSE WORD WHICH IS THE BINARY COMPLEMENT OF THE CORRESPONDING INQUIRY WORD; MEANS FOR CONNECTING THE SIGNAL GENERATING MEANS TO THE INPUTS OF SAID DEVICE; REGISTER MEANS CONNECTED TO RECEIVE THE SIGNALS PROVIDED BY THE COMPLEMENT OUTPUTS OF THE ELEMENTS AND TO PROVIDE OUTPUT SIGNALS WHICH ARE THE BINARY EQUIVALENT THEREOF; AND BIT-FOR-BIT COMPARING AND INDICATING MEANS OPERABLY CONNECTED TO THE TRUE OUTPUTS OF THE ELEMENTS OF THE DEVICE AND THE OUTPUTS OF THE REGISTER MEANS FOR COMPARING CORRESPONDING POSITIONS OF THE SAID TWO OUTPUTS AND INDICATING THOSE POSITIONS HAVING DIFFERING BINARY STATES.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |