US3233039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated video film recording
Assignee: 3M Co
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Filing: 1964-09-29
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Granted: 1966-02-01
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 John T Mullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:52
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; H04N3/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A RECORDING SYSTEM FOR LINE SCAN VIDEO SIGNALS WHEREIN A PLURALITY OF LINE SCANS ARE ARRANGED IN SUCCESSIVE FRAMES, EACH REPRESENTING AN IMAGE, INCLUDING MEANS FOR FREQUENCY MODULATING THE LINE-SCAN VIDEO SIGNALS IN A DIRECTION TO PROVIDE LOWER FREQUENCIES FOR THE LIGHTER PORTIONS OF THE IMAGES AND HIGHER FREQUENCIES FOR THE DARKER PORTIONS OF THE IMAGES, AND MEANS OPTICALLY COUPLED TO THE FILM STRIP FOR PROVIDING VISIBLE IMAGES SUBSTANTIALLY SIMILAR TO THE VISIBLE IMAGES REPRESENTED IN THE SUCCESSIVE FRAMES OF THE LINE-SCAN VIDEO SIGNALS.
References Cited (Backward Citations)
US2681382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |