US3281806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse width modulation representation of paired binary digits
Assignee: Honeywell Inc
•
Filing: 1962-12-21
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Granted: 1966-10-25
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Richard B Lawrance
- 👤 Jr John E Mekota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4906; G; G11; G11B; G11B20/00; G11B20/10; G11B20/14; G11B20/1403; G11B20/1423; G11B20/1426
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A STORAGE RECORD FOR BINARY DIGITAL INFORMATION COMPRISING A MAGNETIC MEDIUM HAVING A PLURALITY OF SUBSTANTIALLY IDENTICAL CELLS DISPOSED SERIALLY ADJACENT EACH OTHER, MAGNETIC INDICIA RECORD IN EACH OF SAID CELLS EACH REPRESENTATIVE OF ONE OF FOUR POSSIBLE COMBINATIONS OF A PAIR OF BINARY DIGITS, EACH OF SAID MAGNETIC INDICIA INCLUDING A FIRST SIGNIFICANT POLARITY REVERSAL TO DEFINE THE BEGINING FO THE CORRESPONDING CELL AND A SECOND SIGNIFICANT POLARITY REVERSAL OF OPPOSITE POLARITY FROM SAID FIRST SIGNIFICANT REVERSAL AND SPACED THEREFROM BY A DISTANCE WHICH IS CHARACTERISTICALLY DIFFERENT FOR EACH OF SAID FOUR DIGIT COMBINATIONS REPRESENTED, THE POSITION OF SAID POLARITY REVERSALS WITHIN EACH CELL BEING CHOSEN TO DEFINE PALINDROMIC PAIRS OF SAID FOUR CHARACTERISTICALLY DIFFERENT MAGNETIC INDICIA.
Claim 2
Dependent Claim
118 words
A STORAGE RECORD FOR BINARY DIGITAL INFORMATION COMPRISING A MAGNETIC MEDIUM HAVING A PLURALITY OF SUBSTANTIALLY IDENTICAL CELLS DISPOSED SERIALLY ADJACENT EACH OTHER, MAGNETIC INDICIA RECORD IN EACH OF SAID CELLS EACH REPRESENTATIVE OF ONE OF FOUR POSSIBLE COMBINATIONS OF A PAIR OF BINARY DIGITS, EACH OF SAID MAGNETIC INDICIA INCLUDING A FIRST SIGNIFICANT POLARITY REVERSAL TO DEFINE THE BEGINING FO THE CORRESPONDING CELL AND A SECOND SIGNIFICANT POLARITY REVERSAL OF OPPOSITE POLARITY FROM SAID FIRST SIGNIFICANT REVERSAL AND SPACED THEREFROM BY A DISTANCE WHICH IS CHARACTERISTICALLY DIFFERENT FOR EACH OF SAID FOUR DIGIT COMBINATIONS REPRESENTED, THE POSITION OF SAID POLARITY REVERSALS WITHIN EACH CELL BEING CHOSEN TO DEFINE PALINDROMIC PAIRS OF SAID FOUR CHARACTERISTICALLY DIFFERENT MAGNETIC INDICIA.
References Cited (Backward Citations)
US2887674A
Cited
US3226685A
Cited
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 |