US3316360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head resonance compensator
Assignee: Ampex Corp
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Filing: 1963-08-30
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Granted: 1967-04-25
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Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles H Coleman
- 👤 Michael O Felix
- 👤 Peter W Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:25
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/931; H04N5/9315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A CIRCUIT FOR COMPENSATING FOR DISTORTION CAUSED BY RESONANCE OF A MAGNETIC TRANSDUCER HEAD CIRCUIT, SAID CIRCUIT COMPRISING FIRST MEANS INCLUDING AN INPUT, A RESONANCE NETWORK COUPLED TO SAID INPUT SO THAT A CURRENT WHICH IS A DIRECT FUNCTION OF A SIGNAL APPLIED TO SAID INPUT FLOWS THROUGH SAID RESONANCE NETWORK, AND AN OUTPUT WHICH PROVIDES A SIGNAL RELATED TO THE CURRENT FLOWING THROUGH SAID RESONANCE NETWORK, SAID NETWORK INCLUDING A RESISTOR, CAPACITOR, AND AN INDUCTOR, SAID NETWORK HAVING THE SAME RESONANT FREQUENCY AND Q AS THE TRANSDUCER HEAD CIRCUIT, AND A SECOND MEANS HAVING AN OUTPUT SIGNAL WHICH INCREASES IN AMPLITUDE IN PROPORTION TO THE FREQUENCY OF THE INPUT SIGNAL THERETO, SAID HEAD CIRCUIT BEING COUPLED TO THE INPUT OF ONE OF SAID MEANS AND THE INPUT OF THE OTHER OF SAID MEANS BEING COUPLED TO THE OUTPUT OF SAID ONE MEANS.
Claim 2
Dependent Claim
143 words
A CIRCUIT FOR COMPENSATING FOR DISTORTION CAUSED BY RESONANCE OF A MAGNETIC TRANSDUCER HEAD CIRCUIT, SAID CIRCUIT COMPRISING FIRST MEANS INCLUDING AN INPUT, A RESONANCE NETWORK COUPLED TO SAID INPUT SO THAT A CURRENT WHICH IS A DIRECT FUNCTION OF A SIGNAL APPLIED TO SAID INPUT FLOWS THROUGH SAID RESONANCE NETWORK, AND AN OUTPUT WHICH PROVIDES A SIGNAL RELATED TO THE CURRENT FLOWING THROUGH SAID RESONANCE NETWORK, SAID NETWORK INCLUDING A RESISTOR, CAPACITOR, AND AN INDUCTOR, SAID NETWORK HAVING THE SAME RESONANT FREQUENCY AND Q AS THE TRANSDUCER HEAD CIRCUIT, AND A SECOND MEANS HAVING AN OUTPUT SIGNAL WHICH INCREASES IN AMPLITUDE IN PROPORTION TO THE FREQUENCY OF THE INPUT SIGNAL THERETO, SAID HEAD CIRCUIT BEING COUPLED TO THE INPUT OF ONE OF SAID MEANS AND THE INPUT OF THE OTHER OF SAID MEANS BEING COUPLED TO THE OUTPUT OF SAID ONE MEANS.
References Cited (Backward Citations)
US3160824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |