US3216003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion system
Assignee: International Business Machines Corp
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Filing: 1961-06-06
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Granted: 1965-11-02
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Expires: 1981-06-06
Abstract
No abstract record available.
Inventors
- 👤 Howard L Funk
- 👤 Thomas J Harrison
- 👤 Jursik James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:20
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ANALOG-TO-DIGITAL CONVERSION SYSTEM COMPRISING: A PAIR OF INPUT TERMINALS; MEANS COUPLING AN ANALOG SIGNAL VOLTAGE TO SAID PAIR OF INPUT TERMINALS; A REGISTER FOR STORING DIGITAL DATA; MEANS COUPLED TO SAID REGISTER FOR CONVERTING SAID STORED DIGITAL DATA TO A D.C. VOLTAGE; A CAPACITOR; MEANS SELECTIVELY OPERABLE TO ALTERNATELY CONNECT SAID CAPACITOR FIRST IN PARALLEL WITH SAID D.C. VOLTAGE TO CHARGE SAID CAPACITOR TO THE POTENTIAL OF SAID D.C. VOLTAGE AND THEN IN SERIES WITH SAID INPUT TERMINALS; AND MEANS RESPONSIVE TO THE DIFFERENCE BETWEEN SAID ANALOG SIGNAL AND THE POTENTIAL OF SAID CHARGED CAPACITOR FOR ALTERING THE DIGITAL DATA STORED IN SAID REGISTER, WHEREBY SAID DIGITAL DATA IS ADJUSTED TO EQUAL IN VALUE THE MAGNITUDE OF SAID ANALOG SIGNAL.
Claim 2
Dependent Claim
121 words
AN ANALOG-TO-DIGITAL CONVERSION SYSTEM COMPRISING: A PAIR OF INPUT TERMINALS; MEANS COUPLING AN ANALOG SIGNAL VOLTAGE TO SAID PAIR OF INPUT TERMINALS; A REGISTER FOR STORING DIGITAL DATA; MEANS COUPLED TO SAID REGISTER FOR CONVERTING SAID STORED DIGITAL DATA TO A D.C. VOLTAGE; A CAPACITOR; MEANS SELECTIVELY OPERABLE TO ALTERNATELY CONNECT SAID CAPACITOR FIRST IN PARALLEL WITH SAID D.C. VOLTAGE TO CHARGE SAID CAPACITOR TO THE POTENTIAL OF SAID D.C. VOLTAGE AND THEN IN SERIES WITH SAID INPUT TERMINALS; AND MEANS RESPONSIVE TO THE DIFFERENCE BETWEEN SAID ANALOG SIGNAL AND THE POTENTIAL OF SAID CHARGED CAPACITOR FOR ALTERING THE DIGITAL DATA STORED IN SAID REGISTER, WHEREBY SAID DIGITAL DATA IS ADJUSTED TO EQUAL IN VALUE THE MAGNITUDE OF SAID ANALOG SIGNAL.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |