US3248726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-linear analog to digital converter
Assignee: RCA Corp
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Filing: 1962-05-24
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Granted: 1966-04-26
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Richard W Sonnenfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:17
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN COMBINATION, A CYCLICAL RECORDING MEDIUM WHICH IS ROTATABLE AT A FIXED SPEED, SAID MEDIUM HAVING RECORDED ON SUCCESSIVE, EQUALLY SPACED LINES THEREOF THE VALUES, IN BINARY FORM, OF A VARIABLE REPRESENTED BY SUCCESSIVE EQUAL INCREMENTS OF AN ANALOG QUANTITY, WHERE SAID ANALOG QUANTITY BEARS A NON-LINEAR RELATIONSHIP TO SAID VARIABLE; MEANS FOR PRODUCING A REFERENCE ANALOG QUANTITY THE VALUE OF WHICH IS A LINEAR FUNCTION OF TIME AND WHICH STARTS AT A TIME CORRESPONDING TO THE TIME WHEN THE FIRST LINE ON SAID MEDIUM PASSES A REFERENCE POSITION; AND MEANS FOR COMPARING SAID REFERENCE ANALOG QUANTITY WITH AN ANALOG QUANTITY REPRESENTATIVE OF SAID VARIABLE AND, WHEN THE TWO ANALOG QUANTITIES BEAR A PREDETERMINED RELATIONSHIP, READING THE INFORMATION THEN APPEARING ON THE MEDIUM AT SAID REFERENCE POSITION.
Claim 2
Dependent Claim
127 words
IN COMBINATION, A CYCLICAL RECORDING MEDIUM WHICH IS ROTATABLE AT A FIXED SPEED, SAID MEDIUM HAVING RECORDED ON SUCCESSIVE, EQUALLY SPACED LINES THEREOF THE VALUES, IN BINARY FORM, OF A VARIABLE REPRESENTED BY SUCCESSIVE EQUAL INCREMENTS OF AN ANALOG QUANTITY, WHERE SAID ANALOG QUANTITY BEARS A NON-LINEAR RELATIONSHIP TO SAID VARIABLE; MEANS FOR PRODUCING A REFERENCE ANALOG QUANTITY THE VALUE OF WHICH IS A LINEAR FUNCTION OF TIME AND WHICH STARTS AT A TIME CORRESPONDING TO THE TIME WHEN THE FIRST LINE ON SAID MEDIUM PASSES A REFERENCE POSITION; AND MEANS FOR COMPARING SAID REFERENCE ANALOG QUANTITY WITH AN ANALOG QUANTITY REPRESENTATIVE OF SAID VARIABLE AND, WHEN THE TWO ANALOG QUANTITIES BEAR A PREDETERMINED RELATIONSHIP, READING THE INFORMATION THEN APPEARING ON THE MEDIUM AT SAID REFERENCE POSITION.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |