US3097267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recording and/or reproducing system and method
Assignee: Ampex Corp
•
Filing: 1958-08-08
•
Granted: 1963-07-09
•
Expires: 1978-08-08
Abstract
No abstract record available.
Inventors
- 👤 Harold V Clark
- 👤 Roizen Joseph
- 👤 Jr John F Varnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:50
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/245; G; G11; G11B; G11B5/00; G11B5/008; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A SYSTEM OF THE CHARACTER DESCRIBED IN WHICH A MAGNETIC TAPE IS DRIVEN LENGTHWISE IN COOPERATIVE RELATIONSHIP WITH A ROTARY MAGNETIC HEAD ASSEMBLY TO FORM SUCCESSIVE ROCORD TRACKS EXTENDING CROSSWISE OF THE TAPE; MEANS FOR DERIVING A FIRST SIGNAL HAVING A FREQUENCY WHICH IS DEPENDENT UPON THE SPEED OF ROTATION OF THE MAGNETIC HEAD ASSEMBLY, A SOURCE OF REFERENCE SIGNAL OF REFERENCE FREQUENCY, MEANS ADAPTED TO RECEIVE SAID SIGNALS AND FORM AN INTERMEDIATE OUTPUT SIGNAL HAVING ITS PHASE CONTROLLED BY THE PHASE DIFFERENCES BETWEEN SAID
Claim 2
Dependent Claim
86 words
IN A SYSTEM OF THE CHARACTER DESCRIBED IN WHICH A MAGNETIC TAPE IS DRIVEN LENGTHWISE IN COOPERATIVE RELATIONSHIP WITH A ROTARY MAGNETIC HEAD ASSEMBLY TO FORM SUCCESSIVE ROCORD TRACKS EXTENDING CROSSWISE OF THE TAPE; MEANS FOR DERIVING A FIRST SIGNAL HAVING A FREQUENCY WHICH IS DEPENDENT UPON THE SPEED OF ROTATION OF THE MAGNETIC HEAD ASSEMBLY, A SOURCE OF REFERENCE SIGNAL OF REFERENCE FREQUENCY, MEANS ADAPTED TO RECEIVE SAID SIGNALS AND FORM AN INTERMEDIATE OUTPUT SIGNAL HAVING ITS PHASE CONTROLLED BY THE PHASE DIFFERENCES BETWEEN SAID
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |