Patent US3221324A successfully refreshed from Google Patents.
US3221324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog to digital converter
Assignee: International Business Machines Corp
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Filing: 1960-10-26
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Granted: 1965-11-30
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Expires: 1980-10-26
Abstract
No abstract record available.
Inventors
- 👤 William P Margopoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:22
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN ANALOG TO DIGITAL CONVERTER COMPRISING IN COMBINATION: A MULTI-ORDER REVERSIBLE BINARY COUNTER, THE RESPECTIVE ORDERS OF WHICH HAVE WEIGHTED BINARY VALUES, MEANS RESPONSIVE TO THE COUNT IN SAID COUNTER FOR PRODUCING A VOLTAGE OUTPUT PROPORTIONAL TO SUCH COUNT, COMPARING MEANS OPERATIVELY CONNECTED TO SAID COUNTRESPONSIVE VOLTAGE MEANS AND TO A SOURCE OF A VARYING UNKNOWN VOLTAGE FOR FURNISHING A SELECTED OUTPUT REPRESENTING THE HIGHEST SETTING OF SAID COUNTER HAVING A WEIGHTED VALUE LESS THAN THE MAGNITUDE OF THE DIFFERENCE BETWEEN THE COUNT-RESPONSIVE VOLTAGE AND THE UNKNOWN VOLTAGE WITH WHICH IT IS BEING COMPARED, GATING MEANS CONNECTED TO A PLURALITY OF PREDETERMINED ORDERS OF SAID COUNTER, RESPONSIVE TO SAID COMPARING MEANS OUTPUT, FOR ALTERING THE COUNT IN SAID COUNTER AT THE RELATED ONES OF SAID PREDETERMINED ORDERS, AND MEANS OPERATIVELY CONNECTED TO SAID UNKNOWN VOLTAGE SOURCE AND TO SAID COUNT-RESPONSIVE VOLTAGE MEANS, RESPONSIVE TO A CHANGE IN POLARITY TO THE DIFFERENCE BETWEEN SAID VOLTAGES, FOR CAUSING THE COUNT IN SAID COUNTER TO READ OUT.
Claim 2
Dependent Claim
164 words
AN ANALOG TO DIGITAL CONVERTER COMPRISING IN COMBINATION: A MULTI-ORDER REVERSIBLE BINARY COUNTER, THE RESPECTIVE ORDERS OF WHICH HAVE WEIGHTED BINARY VALUES, MEANS RESPONSIVE TO THE COUNT IN SAID COUNTER FOR PRODUCING A VOLTAGE OUTPUT PROPORTIONAL TO SUCH COUNT, COMPARING MEANS OPERATIVELY CONNECTED TO SAID COUNTRESPONSIVE VOLTAGE MEANS AND TO A SOURCE OF A VARYING UNKNOWN VOLTAGE FOR FURNISHING A SELECTED OUTPUT REPRESENTING THE HIGHEST SETTING OF SAID COUNTER HAVING A WEIGHTED VALUE LESS THAN THE MAGNITUDE OF THE DIFFERENCE BETWEEN THE COUNT-RESPONSIVE VOLTAGE AND THE UNKNOWN VOLTAGE WITH WHICH IT IS BEING COMPARED, GATING MEANS CONNECTED TO A PLURALITY OF PREDETERMINED ORDERS OF SAID COUNTER, RESPONSIVE TO SAID COMPARING MEANS OUTPUT, FOR ALTERING THE COUNT IN SAID COUNTER AT THE RELATED ONES OF SAID PREDETERMINED ORDERS, AND MEANS OPERATIVELY CONNECTED TO SAID UNKNOWN VOLTAGE SOURCE AND TO SAID COUNT-RESPONSIVE VOLTAGE MEANS, RESPONSIVE TO A CHANGE IN POLARITY TO THE DIFFERENCE BETWEEN SAID VOLTAGES, FOR CAUSING THE COUNT IN SAID COUNTER TO READ OUT.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |