US3281827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog-to-digital converter
Assignee: North American Aviation Corp
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Filing: 1963-06-27
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Granted: 1966-10-25
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Olshausen Richard
- 👤 Charles L Lutes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
AN ANALOG-TO-DIGITAL CONVERTER COMPRISING A SIGNAL SUMMING MEANS ADAPTED TO RECEIVE AN ANALOG SIGNAL, DETECTION MEANS RESPONSIVE TO AN OUTPUT SIGNAL OF SAID SUMMING MEANS FOR PROVIDING DISCRETE SIGNALS REPRESENTATIVE OF THE SENSE AND VALUE OF SAID OUTPUT SIGNALS, ANALOG INTEGRATING MEANS RESPONSIVE TO SAID DISCRETE SIGNALS FOR PROVIDING AN INTEGRATED ANALOG FEEDBACK SIGNAL TO SAID SUMMING MEANS TO DRIVE SAID OUTPUT SIGNAL TOWARD ZERO AMPLITUDE, AND ACCUMULATING MEANS RESPONSIVE TO SAID DISCRETE SIGNALS FROM SAID DETECTION MEANS FOR ALGEBRAICALLY ADDING TO A DIGITAL NUMBER STORED THEREIN SAID DISCRETE SIGNALS REPRESENTING THE VALUE OF SAID OUTPUT SIGNAL IN ACCORDANCE WITH SAID DISCRETE SENSE SIGNALS, WHEREBY A DIGITAL NUMBER REPRESENTATIVE OF SAID ANALOG SIGNAL IS DERIVED.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |