US3331927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for editing recorded material utilizing high speed passive switching between playback and record modes
Assignee: Ampex Corp
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Filing: 1962-07-20
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Granted: 1967-07-18
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Expires: 1982-07-20
Abstract
No abstract record available.
Inventors
- 👤 Norman F Bounsall
- 👤 Donald B Macleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:55
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; G; G11; G11B; G11B27/00; G11B27/02; G11B27/022; G11B27/024; G11B27/029
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A SYSTEM FOR SWITCHING WITH MINIMUM TIME INTERRUPTION BETWEEN RECORD AND PLAYBACK MODES IN A MAGNETIC RECORDING AND REPRODUCING SYSTEM, COMPRISING: COMMON RECORD AND PLAYBACK MEANS; MEANS RESPONSIVE TO CONTROL SIGNALS FOR PROVIDING SIGNALS TO BE RECORDED; PREAMPLIFIER MEANS RESPONSIVE TO REPRODUCED SIGNALS FOR PROVIDING PLAYBACK SIGNALS TO BE PROCESSED; AND PASSIVE SWITCHING MEANS COUPLING THE MEANS FOR PROVIDING SIGNALS TO BE RECORDED TO THE RECORD AND PLAYBACK MEANS, THE PASSIVE SWITCHING MEANS DECOUPLING THE PREAMPLIFIER
Claim 2
Independent Claim
76 words
A SYSTEM FOR SWITCHING WITH MINIMUM TIME INTERRUPTION BETWEEN RECORD AND PLAYBACK MODES IN A MAGNETIC RECORDING AND REPRODUCING SYSTEM, COMPRISING: COMMON RECORD AND PLAYBACK MEANS; MEANS RESPONSIVE TO CONTROL SIGNALS FOR PROVIDING SIGNALS TO BE RECORDED; PREAMPLIFIER MEANS RESPONSIVE TO REPRODUCED SIGNALS FOR PROVIDING PLAYBACK SIGNALS TO BE PROCESSED; AND PASSIVE SWITCHING MEANS COUPLING THE MEANS FOR PROVIDING SIGNALS TO BE RECORDED TO THE RECORD AND PLAYBACK MEANS, THE PASSIVE SWITCHING MEANS DECOUPLING THE PREAMPLIFIER
References Cited (Backward Citations)
US2964650A
Cited
US3090017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |