US3288926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current restoration curcuit
Assignee: Nortel Networks Ltd
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Filing: 1963-07-01
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Granted: 1966-11-29
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/18; H04N5/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A DIRECT CURRENT RESTORATION CIRCUIT FOR AN IMAGE REPRODUCING DEVICE, SAID CIRCUIT BEING ADAPTED TO RECEIVE A SYNCHRONIZATION PULSE AND A VIDEO SIGNAL HAVING A BLANKING COMPONENT AND A SYNCHRONIZATION COMPONENT SUPERIMPOSED ON THE BLANKING COMPONENT, SAID SYNCHRONIZATION PULSE BEING COINCIDENT WITH SAID SYNCHRONIZATION COMPONENT, SAID CIRCUIT COMPRISING INPUT AND OUTPUT CONNECTIONS FOR CONNECTING THE VIDEO SIGNAL THERETO AND THEREFROM RESPECTIVELY, A FIRST COUPLING CAPACITOR SERIALLY CONNECTED BETWEEN SAID INPUT AND OUTPUT CONNECTIONS, A FIRST AND A SECOND UNIDIRECTIONAL DEVICE SERIALLY CONNECTED IN REVERSE POLARITY ACROSS SAID OUTPUT CONNECTIONS, MEANS FOR COUPLING THE SYNCHRONIZATION PULSE TO THE JUNCTION OF THE FIRST AND THE SECOND UNIDIRECTIONAL DEIVCES THROUGH A
Claim 2
Dependent Claim
108 words
A DIRECT CURRENT RESTORATION CIRCUIT FOR AN IMAGE REPRODUCING DEVICE, SAID CIRCUIT BEING ADAPTED TO RECEIVE A SYNCHRONIZATION PULSE AND A VIDEO SIGNAL HAVING A BLANKING COMPONENT AND A SYNCHRONIZATION COMPONENT SUPERIMPOSED ON THE BLANKING COMPONENT, SAID SYNCHRONIZATION PULSE BEING COINCIDENT WITH SAID SYNCHRONIZATION COMPONENT, SAID CIRCUIT COMPRISING INPUT AND OUTPUT CONNECTIONS FOR CONNECTING THE VIDEO SIGNAL THERETO AND THEREFROM RESPECTIVELY, A FIRST COUPLING CAPACITOR SERIALLY CONNECTED BETWEEN SAID INPUT AND OUTPUT CONNECTIONS, A FIRST AND A SECOND UNIDIRECTIONAL DEVICE SERIALLY CONNECTED IN REVERSE POLARITY ACROSS SAID OUTPUT CONNECTIONS, MEANS FOR COUPLING THE SYNCHRONIZATION PULSE TO THE JUNCTION OF THE FIRST AND THE SECOND UNIDIRECTIONAL DEIVCES THROUGH A
References Cited (Backward Citations)
US2934602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |