Patent US3081452A successfully refreshed from Google Patents.
US3081452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encoder
Assignee: AT&T Inc
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Filing: 1960-12-29
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Granted: 1963-03-12
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Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Meinken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:14
CPC Classifications
H; H03; H03M; H03M1/00; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/042; H03M1/10; H03M1/1009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
APPARATUS FOR ENCODING ANALOG SIGNALS IN AN N-DIGIT BINARY CODE, COMPRISING N GROUPS OF DIFFERENTIALLY BIASED THIN MAGNETIC FILM ELEMENTS CHARACTERIZED BY SUBSTANTIALLY RECTANGULAR HYSTERESIS LOOPS, THE ELEMENTS IN THE NTH GROUP (N=1,...,N) BEING DIFFERENTIALLY BIASED IN ACCORDANCE WITH SAID BINARY CODE OVER A RANGE RN=ANR WHERE R IS THE RANGE OF SIGNAL VALUES TO BE ENCODED AND AN IS A CONSTANT, MEANS FOR APPLYING TO EACH OF SAID GROUPS OF ELEMENTS MAGNETIC DRIVE PULSES OF MAGNITUDE EQUAL TO AN TIMES THE MAGNITUDE OF SAMPLE VALUES OF THE SIGNAL TO BE
Claim 2
Dependent Claim
91 words
APPARATUS FOR ENCODING ANALOG SIGNALS IN AN N-DIGIT BINARY CODE, COMPRISING N GROUPS OF DIFFERENTIALLY BIASED THIN MAGNETIC FILM ELEMENTS CHARACTERIZED BY SUBSTANTIALLY RECTANGULAR HYSTERESIS LOOPS, THE ELEMENTS IN THE NTH GROUP (N=1,...,N) BEING DIFFERENTIALLY BIASED IN ACCORDANCE WITH SAID BINARY CODE OVER A RANGE RN=ANR WHERE R IS THE RANGE OF SIGNAL VALUES TO BE ENCODED AND AN IS A CONSTANT, MEANS FOR APPLYING TO EACH OF SAID GROUPS OF ELEMENTS MAGNETIC DRIVE PULSES OF MAGNITUDE EQUAL TO AN TIMES THE MAGNITUDE OF SAMPLE VALUES OF THE SIGNAL TO BE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |